Portable electronic device

Abstract

An object of the present invention is to suppress, in a portable electronic device that can emit light, a situation in which light is emitted in an unexpected direction when a user suddenly moves the portable electronic device while a light emission operation is being performed. In order to achieve the above object, a mobile telephone includes a light emission unit that emits laser light or the like; a main display unit, a vibration motor, an LED, a speaker, and a sub display unit that perform a predetermined notification when a predetermined condition is satisfied; and a control unit that controls a light emission operation performed by the light emission unit, the control unit including a suppression unit that suppresses a predetermined notification performed by the main display unit, the vibration motor, the LED, the speaker, and the sub display unit when the light emission unit emits light.

Claims

1 . A portable electronic device, comprising: a light emission unit that emits light; a notification unit that performs a predetermined notification; and a control unit that controls a light emission operation performed by the light emission unit, and a notification operation performed by the notification unit, according to a predetermined condition, wherein the control unit suppresses the predetermined notification when the light emission unit is emitting light. 2 . The portable electronic device according to claim 1 , further comprising: a communication unit, wherein, when the light emission operation by the light emission unit is being controlled, if it is determined that a call is received by the communication unit, the control unit suppresses the predetermined notification performed by the notification unit. 3 . The portable electronic device according to claim 2 , wherein, when the light emission operation by the light emission unit is being controlled, if it is determined that a specific signal is not included in a call received by the communication unit, the control unit suppresses the predetermined notification performed by the notification unit. 4 . The portable electronic device according to claim 2 , wherein, when the light emission operation by the light emission unit is being controlled, if it is determined that a call received by the communication unit is from a correspondent other than a specific correspondent, the control unit suppresses the predetermined notification performed by the notification unit. 5 . The portable electronic device according to claim 4 , wherein, when the light emission operation by the light emission unit is being controlled, if it is determined that a specific signal is not included in a call received by the communication unit, the control unit suppresses the predetermined notification performed by the notification unit. 6 . The portable electronic device according to claim 1 , further comprising: an alarm operation unit, wherein, when the light emission operation by the light emission unit is being controlled, if it is determined that an alarm operation has been performed by the alarm operation unit, the control unit suppresses the predetermined notification performed by the notification unit. 7 . The portable electronic device according to claim 6 , wherein, when the light emission operation by the light emission unit is being controlled, if it is determined that an alarm operation other than a specific alarm operation has been performed by the alarm operation unit, the control unit suppresses the predetermined notification performed by the notification unit. 8 . The portable electronic device according to claim 1 , further comprising: a storage unit, wherein, when the predetermined notification is suppressed, the control unit stores, in the storage unit, information related to a case where the predetermined condition that is the basis of the notification has been satisfied. 9 . The portable electronic device according to claim 8 , wherein, when the light emission operation by the light emission unit has been suppressed, if there is stored, in the storage unit, the information related to a case where the predetermined condition has been satisfied, the control unit allows the notification unit to perform the predetermined notification. 10 . The portable electronic device according to claim 1 , further comprising: a case; and a case state detection unit that detects a state of the case, wherein, when the light emission operation by the light emission unit is being controlled, if the case state detection unit determines that the state of the case is a predetermined state, the control unit suppresses the predetermined notification performed by the notification unit. 11 . A portable electronic device, comprising: a light emission unit that emits light; a communication unit; and a control unit that controls a light emission operation performed by the light emission unit and a communication operation performed by the communication unit, wherein the control unit suppresses the communication operation performed by the communication unit when the light emission operation by the light emission unit is being controlled.
TECHNICAL FIELD [0001] The present invention relates to a portable electronic device which can emit light. BACKGROUND ART [0002] In a presentation, when a presenter gives a presentation while displaying a presentation material on a screen through a projector, in order to make the audience easily understand, in most cases, a part corresponding to the content of the presentation material that is being explained is pointed out using a light emission unit that can emit light such as a laser pointer. Patent Literature 1 discloses a portable electronic device including the light emission unit described above. CITATION LIST Patent Literature [0000] Patent Literature Japanese Patent Application Laid-Open No. 2008-129219 DISCLOSURE OF INVENTION Problems to be Solved by the Invention [0004] However, in the portable electronic device disclosed in Patent Literature 1, it is supposed that while a light emission operation is being performed, if a predetermined condition is satisfied, notification to a user is performed, so that the user may notice the notification and suddenly move the portable electronic device, and thus there is a concern that light may be emitted in an unexpected direction. [0005] The present invention is made in light of the above described problem, and an object thereof is to provide a portable electronic device that allows notification to be suppressed when a light emission operation is being performed, thereby suppressing a situation in which light is emitted in an unexpected direction. Means for Solving Problem [0006] In order to solve the above-described problem, a portable electronic device according to an exemplary embodiment of the present invention comprises: a light emission unit that emits light; a notification unit that performs a predetermined notification; and a control unit that controls a light emission operation performed by the light emission unit, and a notification operation performed by the notification unit, according to a predetermined condition. The control unit suppresses the predetermined notification when the light emission unit is emitting light. [0007] Preferably, the portable electronic device further comprises: a communication unit. When the light emission operation by the light emission unit is being controlled, if it is determined that a call is received by the communication unit, the control unit suppresses the predetermined notification performed by the notification unit. [0008] Preferably, when the light emission operation by the light emission unit is being controlled, if it is determined that a call received by the communication unit is from a correspondent other than a specific correspondent, the control unit suppresses the predetermined notification performed by the notification unit. [0009] Preferably, when the light emission operation by the light emission unit is being controlled, if it is determined that a specific signal is not included in a call received by the communication unit, the control unit suppresses the predetermined notification performed by the notification unit. [0010] Preferably, the portable electronic device further comprises: an alarm operation unit. When the light emission operation by the light emission unit is being controlled, if it is determined that an alarm operation has been performed by the alarm operation unit, the control unit suppresses the predetermined notification performed by the notification unit. [0011] Preferably, when the light emission operation by the light emission unit is being controlled, if it is determined that an alarm operation other than a specific alarm operation has been performed by the alarm operation unit, the control unit suppresses the predetermined notification performed by the notification unit. [0012] Preferably, the portable electronic device further comprises: a storage unit. When the predetermined notification is suppressed, the control unit stores, in the storage unit, information related to a case where the predetermined condition that is the basis of the notification has been satisfied. [0013] Preferably, when the light emission operation by the light emission unit has been suppressed, if there is stored, in the storage unit, the information related to a case where the predetermined condition has been satisfied, the control unit allows the notification unit to perform the predetermined notification. [0014] Preferably, the portable electronic device further comprises: a case; and a case state detection unit that detects a state of the case. When the light emission operation by the light emission unit is being controlled, if the case state detection unit determines that the state of the case is a predetermined state, the control unit suppresses the predetermined notification performed by the notification unit. [0015] A portable electronic device according to another aspect of the present invention comprises: a light emission unit that emits light; a communication unit; and a control unit that controls a light emission operation performed by the light emission unit and a communication operation performed by the communication unit. The control unit suppresses the communication operation performed by the communication unit when the light emission operation by the light emission unit is being controlled. EFFECT OF THE INVENTION [0016] According to the present invention, since notification by a notification unit is suppressed when a light emission operation is being performed, a situation in which light is emitted in an unexpected direction can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS [0017] FIG. 1 is an exterior front view illustrating a state in which a mobile telephone is opened. [0018] FIG. 2 is an exterior rear view illustrating a state in which a mobile telephone is opened. [0019] FIG. 3 is a block diagram illustrating basic components of a mobile telephone. [0020] FIG. 4 is a flowchart showing an operation example according to a first embodiment of the present invention. [0021] FIG. 5 is a flowchart showing an operation example according to a second embodiment of the present invention. [0022] FIG. 6 is a flowchart showing an operation example according to a third embodiment of the present invention. DESCRIPTION OF EMBODIMENTS [0023] Hereinafter, best modes for realizing the present invention will be described with reference to the accompanying drawings. In a first embodiment and a second embodiment described below, a portable electronic device according to the present invention is a mobile telephone 1 with a laser pointer function. [0024] A basic structure of the mobile telephone 1 according to the first and second embodiments will be described with reference to FIG. 1 and FIG. 2 . FIG. 1 is an exterior front view illustrating a state in which the mobile telephone 1 is opened. FIG. 2 is an exterior rear view illustrating a state in which the mobile telephone 1 is opened. [0025] As illustrated in FIG. 1 , the mobile telephone 1 includes an operation unit side case 2 and a display unit side case 3 . The operation unit side case 2 and the display unit side case 3 are connected through a connection unit 4 with a hinge mechanism and configured to be movable between an open state and a close state. The operation unit side case 2 includes an operation unit 13 that has a plurality of keys and a voice input unit 20 that is disposed at an end section of a side opposite to a side at which the connection unit 4 is installed. The display unit side case 3 includes a main display unit 14 , and a light emission unit 16 and a voice output unit 21 that are disposed at an end section of a side opposite to a side at which the connection section 4 is installed. [0026] Further, as illustrated in FIG. 2 , a speaker 19 , a sub display unit 25 , a camera 26 , and a camera light 27 are installed on a back side of the operation unit side case 2 . [0027] FIG. 3 is a block diagram illustrating basic components of the mobile telephone 1 . As illustrated in FIG. 3 , the mobile telephone 1 is configured to include a control unit 11 , a communication unit 12 , an operation unit 13 , a main display unit 14 , a storage unit 15 , a light emission unit 16 , a vibration motor 17 , a light emitting diode (LED) 18 , a speaker 19 , a voice input unit 20 , a voice output unit 21 , a timer 22 , a sub display unit 25 , a camera 26 , a camera light 27 , and an acceleration sensor 28 . [0028] The communication unit 12 receives a signal from a reception side of a baseband unit and demodulates the signal into a reception baseband signal. The communication unit 12 encodes voice data input from the voice input unit 20 into a transmission baseband signal, and transmits the transmission baseband signal. Further, the communication unit 12 performs communications such as transmission and reception of a mail, a connection to the Internet, and reception of a GPS (Global Positioning System) signal. [0029] The operation unit 13 includes a function setting operation key 13 a for operating various settings or various functions such as a telephone book function or a mail function, an operation input key 13 b for inputting a digit of a telephone number, a character for a mail, or the like, and a decision operation key 13 c for performing a decision in various operations or scrolling in an up, down, left, or right direction. A predetermined operation content is assigned to each of the keys that configure the operation unit 13 according to an open/close state of the operation unit side case 2 and the display unit side case 3 , various modes, or a kind of an activated application or the like (key assignment). When a user presses each key down, an operation according to an operation content assigned to each key is executed. [0030] The main display unit 14 (one of notification units) and the sub display unit 25 (one of the notification units) are display devices that are configured with a liquid crystal, an organic EL (Electro Luminescence), or the like and performs notification by displaying various information related to the mobile telephone 1 . [0031] The storage unit 15 is a storage device that stores various information related to the mobile telephone 1 and stores a telephone book, an address book, photography data, music data, programs for implementing the first and second embodiments according to flowcharts illustrated in FIGS. 4 and 5 which will be described later, and the like. Further, the storage unit 15 stores a threshold value of a detection value of the acceleration sensor 28 which will be described later. [0032] The light emission unit 16 is configured to be capable of emitting laser light. The decision operation key 13 c in the operation unit 13 is used as a laser light emission operation key that instructs the light emission unit 16 to emit laser light when the mobile telephone 1 functions as the laser pointer. [0033] The vibration motor 17 (one of the notification units) performs notification by generating predetermined vibration through a vibrator. [0034] The LED (Light Emitting Diode) 18 (one of the notification units) performs notification by generating predetermined light. [0035] The speaker 19 (one of the notification units) performs notification by converting an electrical signal into vibration and generating a predetermined sound. [0036] The voice input unit 20 converts a sound into a signal that can be transmitted through the communication unit 12 . The voice output unit 21 converts a signal received by the communication unit 12 into a sound and outputs the sound. [0037] The timer 22 can measure a predetermined time and inform the user of the elapse of time. [0038] The camera 26 can take a picture of the surroundings. The camera light 27 can emit predetermined light in a direction in which the camera 26 faces. [0039] The acceleration sensor 28 (a case state detection unit) is a detector that detects acceleration applied to the operation unit side case 2 or the display unit side case 3 . The acceleration sensor 28 converts a value of detected acceleration into a signal and outputs the signal to the control unit 11 . For example, as the acceleration sensor 28 , a detector that detects acceleration through a change in capacitance, a change in piezoresistance, a change in relative position, or the like is used. [0040] The control unit 11 controls an operation of each component of the mobile telephone 1 according to the program stored in the storage unit 15 . For example, when a communication operation is performed by the communication unit 12 , a signal for instructing notification of information related to the communication operation is transmitted to the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 . The control unit 11 is configured to include an alarm operation unit 23 and a suppression unit 24 . The alarm operation unit 23 draws the user's attention through the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 . Specifically, the alarm operation unit 23 transmits a signal for instructing notification of information related to an alarm operation to the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 . [0041] The control unit 11 compares the acceleration detected by the acceleration sensor 28 with the threshold value stored in the storage unit 15 , determines that the mobile telephone 1 remains stationary when the detected acceleration is less than the threshold value, and determines that the mobile telephone 1 does not remain stationary (is moving) when the detected acceleration is larger than the threshold value. [0042] A predetermined condition for performing the notification operation refers to when the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 receive a signal for instructing the notification of information related to the communication operation or the alarm operation from the control unit 11 or the alarm operation unit 23 . When the signal for instructing notification is received, the main display unit 14 and the sub display unit 25 perform notification by displaying a character or an image on their screens. The vibration motor 17 performs notification by generating predetermined vibration. The LED 18 performs notification by generating predetermined light. The speaker 19 performs notification by generating a predetermined sound. [0043] The suppression unit 24 suppressed notification, based on the predetermined condition, by the main display 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 when the laser light emission operation by the light emission unit 16 is being performed by the control unit 11 . Specifically, when the respective notification units are performing their operations, the suppression unit 24 transmits a signal for stopping emission of back light to the main display unit 14 and the sub display unit 25 , a signal for stopping generation of predetermined vibration to the vibration motor 17 , a signal for stopping generation of predetermined light to the LED 18 , and a signal for stopping generation of a predetermined sound to the speaker 19 , respectively. Meanwhile, when the respective notification units do not perform their operations, the suppression unit 24 transmits a signal for instructing continuously riot to perform emission of back light to the main display unit 14 and the sub display unit 25 , a signal for instructing continuously not to perform generation of predetermined vibration to the vibration motor 17 , a signal for instructing continuously not to perform generation of predetermined light to the LED 18 , and a signal for instructing continuously not to perform generation of a predetermined sound to the speaker 19 , respectively. [0044] The control unit 11 can release suppression of notification by the suppression unit 11 . Specifically, the control unit 11 releases suppression of notification by stopping the transmitting of the signals for instructing continuously not to perform their operations to the respective notification units. [0045] In the first embodiment, the mobile telephone 1 according to the present invention is configured to suppress notification through the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display 25 by using the suppression unit 24 when the laser light emission operation by the light emission unit 16 is being performed by the control unit 11 . As a result, it is possible to suppress the situation in which light is emitted in an unexpected direction when the user notices the notification such as a call reception or a mail reception and suddenly moves the mobile telephone 1 . A specific operation will be described below with reference to FIG. 4 . [0046] FIG. 4 is a flowchart for explaining an operation example according to the first embodiment of the present invention. First, when the control unit 11 detects that the user has performed an operation for activating the laser pointer function on the operation unit 13 , the control unit 11 activates the laser pointer function that enables the laser light emission operation by the light emission unit 16 (step A 1 ). The suppression unit 24 suppresses notification by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 (step A 2 ). Then, when the control unit 11 detects that the user has performed an operation for starting the laser light emission operation on the operation unit 13 , the control unit 11 starts the laser light emission operation (step A 3 ). [0047] In step S 4 , the control unit 11 determines whether or not the communication operation by the communication unit 12 or the alarm operation by the alarm operation unit 23 has been performed by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 , based on the transmitted signal for instructing notification. When it is determined that the communication operation or the alarm operation has been performed (Yes in step S 4 ), the control unit 11 determines whether or not the communication operation or the alarm operation corresponds to a specific condition which will be described later (step A 5 ). Meanwhile, when it is determined that the communication operation or the alarm operation has not been performed (No in step S 4 ), the process returns to step A 4 , and step A 4 is repeated. [0048] Here, a case that corresponds to the specific condition refers to, for example, a case in which the communication unit 12 receives a call from a specific telephone number that is selected from data of the address book inside the storage unit 15 and previously stored in the storage unit 15 by the user, a case in which the control unit 11 determines that a specific character (signal) such as “urgent” or “confirmation required” is included in the title or the text of a received mail, or a case in which the alarm operation that the user has previously stored as an operation to be performed in priority to suppression of notification in the storage unit 15 has been performed. [0049] When the control unit 11 determines that the communication operation or the alarm operation does not correspond to the specific condition when a call is received from a correspondent other than a specific correspondent, when a specific signal is not included in a received call, or when an alarm operation other than a specific alarm operation is performed) (No in step A 5 ), there is stored, in the storage unit 15 , information related to the case where the communication operation or the alarm operation that is the basis of notification has been performed (step A 6 ). Thereafter, the control unit 11 determines whether or not the user has performed an operation for stopping the laser light emission operation on the operation unit 13 (step A 7 ). When it is determined that the operation for stopping the laser light emission operation has not been performed (No in step A 7 ), the process returns to step A 7 , and step A 7 is repeated. [0050] Meanwhile, when it is determined that the operation for stopping the laser light emission operation has been performed (Yes in step A 7 ), the control unit 13 determines whether or not the user has performed an operation for terminating the laser pointer function on the operation unit 13 (step A 8 ). When it is determined that the operation for terminating the laser pointer function has been performed (Yes in step A 8 ), the control unit 11 terminates the laser pointer function (step A 9 ). Then, the control unit 11 releases suppression of notification (step A 10 ). [0051] Thereafter, the control unit 11 determines whether or not there is stored, in the storage unit 15 , information which represents that the communication operation or the alarm operation that does not correspond to the specific condition has been performed (step A 11 ). In the case of the flow so far, since there is stored, in the storage unit 15 in step A 5 , information which relates to the case where the communication operation or the alarm operation has been performed, the control unit 11 determines that there is stored information (Yes in step A 11 ), and notification of the stored information is performed by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 (step A 12 ). [0052] Here, after the control unit 11 determines that the user has performed the operation for stopping the laser light emission operation on the operation unit 13 (Yes in step A 7 ), when the control unit 11 determines that the user has not performed the operation for terminating the laser pointer function on the operation unit 13 (No in step A 8 ), the control 11 activates the timer 22 (step A 13 ). The control unit 11 determines whether or not the user has performed an operation for starting the laser light emission operation within a previously set time limit of the timer (step A 14 ). When it is determined that the operation for starting the laser light emission operation has been performed within the time limit of the timer (Yes in step A 14 ), the process returns to step A 4 . However, when it is determined that the operation for starting the laser light emission operation has not been performed within the time of the timer (No in step A 14 ), the control unit 11 stops (forcibly stops) the laser pointer function (step A 15 ), and, in step A 10 , the control unit 11 releases suppression of notification. Thereafter, step A 11 and step A 12 are performed as in the above described process. [0053] Then, when the control unit 11 determines, in step A 5 , that the communication operation or the alarm operation corresponds to the specific condition (Yes in step A 5 ), the control unit 11 stops the laser light emission operation and stops (forcibly stops) the laser pointer function (step A 16 ) and releases suppression of notification (step A 17 ), and the occurrence of the communication operation or the alarm operation that corresponds to the specific condition is notified through the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 (step A 18 ). For example, a ring tone previously set by the user is notified through the speaker 19 . Thereafter, the control unit 11 determines whether or not there is stored in the storage unit 15 information, which represents that the communication operation or the alarm operation that does not correspond to the specific condition has been performed (step A 11 ). When it is determined that there is stored information (Yes in step A 11 ), notification of the stored information is performed by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 (step A 12 ). When it is determined that there is no stored information (No in step A 11 ), the process is finished as is. [0054] According to the mobile telephone 1 of the present embodiment having the above described configuration, when the laser pointer function that enables the laser light emission operation by the light emission unit 16 is activated by the user's operation, notification through the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 is suppressed by the suppression unit 24 , and thereafter the laser light emission operation starts by the user's operation. As a result, when the laser light emission operation is being performed, it is possible to suppress the situation in which light is emitted in an unexpected direction when the user notices a call reception, a mail reception, or the like and suddenly moves the mobile telephone 1 . [0055] Further, according to the present embodiment, if there is stored, in the storage unit 15 , information which relates to the case where the communication operation or the alarm operation that does not correspond to the specific condition has been performed, after the laser pointer function is terminated by the control unit 11 , notification of the information is performed by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 . As a result, the user can recognize that there has been performed the communication operation or the alarm operation, which does not correspond to the specific condition and which was suppressed since the laser pointer function was being performed. [0056] Further, according to the present embodiment, when the control unit 11 determines that the communication operation or the alarm operation corresponds to the specific condition, the control unit 11 stops the laser pointer function, and suppression of notification by the suppression unit 24 is released, and then notification of the communication operation or the alarm operation that corresponds to the specific condition is performed. As a result, even when the laser light emission operation is being performed, the user can at least confirm the communication operation or the alarm operation that corresponds to the specific condition. [0057] The exemplary embodiment has been described above, but the present invention is not limited to the first embodiment and can be implemented by various embodiments. For example, in the present embodiment, the mobile telephone 1 has been described as the portable electronic device, but the present invention is not limited thereto. The portable electronic device may include other devices that emit light, such as a PHS (a registered trademark; Personal Handy phone System), a PDA (Personal Digital Assistance), a laser pointer, and a projector. [0058] Further, the present embodiment has been described in connection with the mobile phone 1 that is foldable through the connection unit 4 , but the present invention is not limited to the folder type. There may be used a slide type in which one case slides in one direction in a state where the display unit side case 3 is superimposed on the operation unit side case 2 , a rotary (turn) type in which one case rotates on en axis line in an superimposition direction of the display unit side case 3 and the operation unit side case 2 , or a type (straight type) in which the operation unit side case 2 and the display unit side case 3 are arranged on one case without the connection unit. Further, the mobile telephone 1 may have a 2-axis hinge type that is openanle and rotatable. [0059] Further, in the present embodiment, the light emission unit 16 is installed in the display unit side case 3 . However, the light emission unit 16 may be installed in the operation unit side case 2 . Light emitted from the light emission unit 16 is laser light, but the present invention is not limited thereto. For example, light emitted from the camera light 27 , light (image) emitted from the projector, or any other light may be used. [0060] Further, in the present embodiment, notification by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 is all suppressed by the suppression unit 24 , but the present invention is not limited thereto. Notification by lighting-up of the LED 19 may be performed, whereas notification by the main display unit 14 , the vibration motor 17 , the speaker 19 , and the sub display unit 25 may be suppressed. That is, a manner of performing suppression of notification through the suppression unit 24 is arbitrary. [0061] Further, in the present embodiment, suppression of notification is performed by the suppression unit 24 before the user performs the operation for starting the laser light emission operation (at the time of activation of the laser pointer function), but the present invention is not limited thereto. Suppression of notification may be performed at the same time when laser light is emitted. That is, it is preferable that suppression of notification is performed by the suppression unit 24 when the laser light emission operation is being performed. [0062] Further, in the present embodiment, the specific condition related to the communication operation or the alarm operation includes the case in which a call is received through the communication unit 12 from a specific telephone number that is previously stored in the storage unit 15 by the user, the case in which the control unit 11 determines that a character such as “urgent” or “confirmation required” is included in the title or the text of the received mail, or the case in which the alarm operation that the user has previously stored as an operation to be performed in priority to suppression of notification in the storage unit 15 has been performed. However, the present invention is not limited thereto, and there may be included any other condition such as a case in which a mail is received, from a mail address previously stored in the storage unit 15 similarly to the case of the telephone number or a case in which breaking news on earthquake is received. [0063] Further, in the present embodiment, after the user performs the operation for terminating the laser pointer function, suppression of notification by the suppression unit 24 is released, and then notification is performed. However, the present invention is not limited thereto. When the user performs the operation for stopping the laser light emission operation, suppression of notification may be released, and then notification may be performed. Alternatively, notification may be immediately performed without releasing suppression of notification. [0064] Further, in the present embodiment, in step A 7 , the control unit 11 determines whether or not the user has performed the operation for stopping the laser light emission operation, but the present invention is not limited thereto, and the control unit 11 may determine whether or not intensity of laser light is lower than predetermined intensity. [0065] Furthermore, in the present embodiment, notification is performed by all of the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 , but the present invention is not limited thereto, and notification may be performed by at least one of them. [0066] Next, the mobile telephone 1 according to the second embodiment of the present invention will be described. A description will be made below focusing on points different from the mobile telephone 1 of the first embodiment, and the other descriptions will not be repeated. [0067] In the second embodiment, when the laser light emission operation by the light emission unit 16 is being performed by the control unit 11 , the communication operation by the communication unit 12 can be suppressed by the suppression unit 24 . Specifically, the suppression unit 24 transmits a signal for stopping the communication operation to the communication unit 12 . Thus, information related to the communication operation is accumulated in a base station and does not reach the mobile telephone 1 . The control unit 11 can release suppression of the communication operation by the suppression unit 24 . Specifically, the control unit 11 releases suppression of the communication operation by stopping the suppression unit 24 from transmitting the signal for stopping the communication operation to the communication unit 12 . [0068] Through the above configuration, it is possible to further suppress the situation in which light gets into the user's eye or the audience's eye when the user notices the notification and suddenly moves the mobile telephone 1 . [0069] A specific operation will be described below with reference to FIG. 5 . FIG. 5 is a flowchart for explaining an operation example of the mobile telephone 1 according to the second embodiment. [0070] First, when the control unit 11 detects that the user has performed an operation for activating the laser pointer function on the operation unit 13 , the control unit activates the laser pointer function that enables the laser light emission operation by the light emission unit 16 (step B 1 ). The suppression unit 24 suppresses the communication operation by the communication unit 12 (step B 2 ). Then, when the control unit 11 detects that the user has performed an operation for starting the laser light emission operation on the operation unit 13 , the control unit 11 starts the laser light emission operation (step B 3 ). [0071] Thereafter, the control unit 11 determines whether or not the user has performed an operation for stopping the laser light emission, operation on the operation unit 13 (step B 4 ). When it is determined that the operation for stopping the laser light emission operation has not been performed (No in step B 4 ), the process returns to step B 4 , and step B 4 is repeated. Meanwhile, when it is determined that the operation for stopping the laser light emission operation has been performed (Yes in step B 4 ), the control unit 11 determines whether or not the user has performed an operation for terminating the laser pointer function on the operation unit 13 (step B 5 ). [0072] When it is determined that the operation for terminating the laser pointer function has been performed (Yes in step B 5 ), the control unit 11 terminates the laser pointer function (step B 7 ). Then, the control unit 11 releases suppression of communication operation (step B 7 ). Further, the communication unit 12 performs communication with the base station in order to confirm whether or not information related to the communication operation for the mobile telephone 1 has been accumulated in the base station while the communication operation is being suppressed by the suppression unit 24 (step B 8 ). [0073] Here, after the control unit 11 determines that the user has performed the operation for stopping the laser light emission operation on the operation unit 13 (Yes in step B 4 ), when the control unit 11 determines that the user has not performed the operation for terminating the laser pointer function on the operation unit 13 (No in step B 5 ), the control 11 activates the timer 22 (step B 9 ). The control unit 11 determines whether or not the user has performed an operation for starting the laser light emission operation within a time limit of the timer (step B 10 ). When it is determined that the operation for starting the laser light emission operation has been performed within the time limit of the timer (Yes in step B 10 ), the process returns to step B 4 . However, when it is determined that the operation for starting the laser light emission operation has not been performed within the time limit of the timer (No in step B 10 ), the control, unit 11 stops (forcibly stops) the laser pointer function (step B 11 ), and, in step B 7 , suppression of the communication operation is released. Thereafter, step B 8 is performed as in the above described process. [0074] According to the mobile telephone 1 of the present embodiment having the above described configuration, when the laser pointer function that enables the laser light emission operation by the light emission unit 16 is activated by the user's operation, the communication operation by the communication unit 12 is suppressed by the suppression unit 24 , and thereafter the laser light emission operation starts by the user's operation. As a result, when the laser light emission operation is being performed, it is possible to further suppress the situation in which light is emitted in an unexpected direction when the user suddenly moves the mobile telephone 1 . [0075] The mobile telephone 1 of the second embodiment cannot perform communication with the base station while the communication operation by the communication unit 12 is being suppressed by the suppression unit 24 , but the alarm operation unit can operate independently of the communication unit 12 . Even though not shown in FIG. 5 , similarly to the first embodiment, the mobile telephone 1 may be configured such that when the alarm operation that does not correspond to the specific condition, is performed, information relevant thereto is stored, and when the alarm operation that corresponds to the specific condition is performed, the alarm operation is notified by lighting-up of the LED 18 or the like. Alternatively, after notification is performed, the laser pointer function may be stopped, suppression of the communication operation by the suppression unit 24 may be released, and communication with the base station may be performed. [0076] The exemplary embodiment has been described above, but, as in the first embodiment, the present invention is not limited to the second embodiment and can be implemented by various embodiments. [0077] Next, the mobile telephone 1 according to a third embodiment of the present invention will be described. In the third embodiment, the portable electronic device according to the present invention is a mobile telephone 1 with a projector function that projects a picture (that is, projects an image) by emitting light through the light emission unit 16 . The mobile telephone 1 of the third embodiment will be described below focusing on points different from the mobile telephone 1 of the first embodiment, and the other descriptions will not be repeated. [0078] In the third embodiment, the mobile telephone 1 is configured such that when the light emission operation by the light emission unit 16 is being performed by the control unit 11 , movement of the mobile telephone 1 is detected by the acceleration sensor 28 , and the notification operation by the main display unit 14 , the vibration motor 17 , the LSD 18 , the speaker 19 , and the sub display unit 25 is suppressed according to the result. As a result, the following effect is obtained. That is, if moving of the mobile telephone 1 is detected by the acceleration sensor 28 , a scene in which the user holds the mobile telephone 1 in his/her hand and is performing the light, emission operation may be considered. Meanwhile, when the mobile telephone 1 that remains stationary is detected by the acceleration sensor 28 , there is a possibility that the light emission operation is being performed in a state in which the user does not hold the telephone 1 in his/her hand, for example, a state in which the mobile telephone 1 is placed on a placement target surface. [0079] In this case, according to the detection result of the acceleration sensor 28 , suppression of notification is performed when it is believed that there is a relatively low possibility that light will be emitted in an unexpected direction (moving of the mobile telephone 1 is detected by the acceleration sensor 28 ), whereas suppression of notification is released when it is believed that there is a relatively low possibility that light will be emitted in an unexpected direction (the mobile telephone 1 that remains stationary is detected). Therefore, it is possible not only to suppress light from being emitted in an unexpected direction but also to perform notification, and thus an effect of improving convenience of the mobile telephone 1 is obtained. [0080] A specific operation will be described below with reference to FIG. 6 . FIG. 6 is a flowchart for explaining an operation example of the mobile telephone 1 according to the third embodiment. First, when the control unit 11 detects that the user has performed an operation for activating a projector function on the operation unit 13 , the control unit activates the projector function that enables the light emission operation by the light emission unit 16 (step C 1 ). The suppression unit 24 suppresses notification by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 (step C 2 ). Then, when the control unit 11 detects that the user has performed an operation for starting the light emission operation on the operation unit 13 , the control unit 11 starts the light emission operation (step C 3 ). [0081] Thereafter, the control unit 11 determines whether or not the communication operation by the communication unit 12 or the alarm operation by the alarm operation unit 23 has been performed by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 , based on the transmitted signal for instructing notification (step C 4 ). When it is determined that the communication operation or the alarm operation has been performed (Yes in step C 4 ), the control unit 11 determines whether or not the communication operation or the alarm operation corresponds to a specific condition which will be described later (step C 5 ). Meanwhile, when it is determined that the communication operation or the alarm operation has not been performed (No in step C 4 ), the process returns to step C 4 , and step C 4 is repeated. For example, case that corresponds to the specific condition refers to a case in which the communication unit receives a call from a specific telephone number that is selected from data of the address book inside the storage unit 15 and stored in the storage unit 15 by the user, a case in which the control unit 11 determines that a specific character (signal) such as “urgent” or “confirmation required” is included in the title or the text of a received mail, or a case in which the alarm operation where the user has previously stored “performing in priority to suppression of notification” in the storage unit 15 has been performed. [0082] When the control unit 11 determines that the communication operation or the alarm operation does not correspond to the specific condition (when a call is received from a correspondent other than a specific correspondent, when a specific signal is not included in a received call, or when an alarm operation other than a specific alarm operation is performed) (No in step C 5 ), there is stored, in the storage unit 15 , information related to the case where the communication operation or the alarm operation that is the basis of notification has been performed (step C 6 ). A subsequent process is the same as in the first embodiment. [0083] Then, when the control unit 11 determines, in step C 5 , that the communication operation or the alarm operation corresponds to the specific condition (Yes in step C 5 ), the control unit 11 determines whether or not the mobile telephone 1 remains stationary, based on a detection value of the acceleration sensor 28 (step C 16 ). When it is determined that the mobile telephone 1 remains stationary (Yes in step C 16 ), the control unit 11 releases suppression of notification (step C 17 ), and the occurrence of the communication operation or the alarm operation that corresponds to the specific condition is notified by the main display unit 14 , the vibration motor 17 , the LED 18 , the speaker 19 , and the sub display unit 25 (step C 18 ). After notification is performed, the process proceeds step C 11 . A subsequent process is the same as the process subsequent to step A 11 in the first embodiment. [0084] Meanwhile, when it is determined that the mobile telephone 1 does not remain stationary (is moving) (step C 16 ), the process proceeds to step C 6 , and there is stored, in the storage unit 15 , information related to the case where the communication operation or the alarm operation that is the basis of notification has been performed. A subsequent process is the same as in the first embodiment. In this case, in step C 9 , notification is not performed until the user performs an operation for stopping the projector function. That is, when the light emission operation is being performed by the control unit 11 , if it is not detected that the mobile telephone 1 remains stationary, notification is suppressed. [0085] The exemplary embodiment has been described above, but it is the same as in the first and second embodiments that the present invention is not limited to the third embodiment and can be implemented by various embodiments. For example, in the third embodiment, the acceleration sensor has been described as the case state detection unit, but the present invention is not limited thereto. If moving of the portable electronic device can be detected, any other sensor such as an illuminance sensor, a geomagnetic sensor, an atmospheric pressure sensor can be used. Further, a case state is not limited to movement based on acceleration as in the third embodiment. Whether or not it is placed on a battery charger may be detected as the case state, and when it is detected that it is not placed on the battery charger, notification may be suppressed. [0086] In the present invention, in the first embodiment, in the case of No in step A 5 , notification may be suppressed. In the second embodiment, after step B 3 , communication may be suppressed. Further, in the third embodiment, in the case of No in step C 16 , not may be suppressed. [0087] Further, suppression of not in the present invention is not limited to the above described configuration but may include a configuration based on a similar technical spirit. For example, the control unit may first determine whether or not an event in which notification by the call reception, the alarm operation, or the like is performed has occurred. When the control unit determines that the event has occurred, the control unit determines whether or not the light emission operation by the light emission unit is being performed. When it is determined that the light emission operation is being performed, notification by the occurrence of the event is suppressed. By performing such a series of processes, the same effect as in the above described embodiments can be obtained by the simple configuration. Further, even when the light emission operation is being performed, if the stationary state of the case is detected, suppression of notification may be released. INDUSTRIAL APPLICABILITY [0088] As described above, the portable electronic device according to the present invention is suitable for use in portable electronic devices that can emit light. REFERENCE SIGNS LIST [0000] 1 mobile telephone 2 operation unit side case 3 display unit side case 11 control unit 12 communication unit 13 operation unit 14 display unit 15 storage unit 16 light emission unit 17 vibration motor 18 LED 19 speaker 22 timer 23 alarm operation unit 24 suppression unit 25 sub display unit 26 camera 27 camera light

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