JP2004248319A - Mobile telephone equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide mobile telephone equipment in which a key back light or a liquid crystal display back light is also available for reporting an incoming call, and the incoming call can be reported without providing an incoming call LED. <P>SOLUTION: The mobile telephone equipment is provided with a key back light 2, a control circuit 7, a photo-sensor 8, a display unit 5 and the like and when the photo-sensor 8 detects that it is dark in the circumference (in the place for use), the key back light 2 is continuously turned off even when a key is pressed. When there is an incoming call, the key back light 2 is blinked to report the incoming call. When a key is pressed, the key back light 2 is continuously turned on, so that a difference from the incoming call by blinking can be easily recognized and even when the key back light 2 is also used for indicating the incoming call, there is no trouble. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a mobile telephone device, and more particularly, to a mobile telephone device such as a portable telephone and a PHS in which a key backlight can be used also as an incoming LED.

FIG. 7 shows a configuration of a conventional mobile telephone device. In the following, a mobile phone will be described as an example of a mobile phone device.
The mobile phone device 1 includes numeric keys and symbol keys for dial input, various function keys for mode selection and the like (none of them are shown), a liquid crystal display (LCD) 5, a microphone, and a speaker (all of them). (Not shown) and the like, and an antenna 6 is provided on the upper part. In addition, a battery as a power supply is mounted. A key backlight 2 is provided inside the mobile phone device 1 so that the location of the key (or button) and the display content of the key can be understood at night or when the surroundings are dark. The turning on / off of the light 2 is controlled by the control circuit 3. Further, the portable telephone device 1 has an incoming call LED 4 (provided in an easy-to-see place such as an upper part of the main body) for notifying the incoming call by blinking when there is an incoming call when the power of the portable telephone device 1 is turned on. The incoming LED 4 is also turned on / off by the control circuit 3. The control circuit 3 determines an incoming call state in accordance with an output of a wireless unit (not shown) to control the incoming call LED 4, and determines whether any key is pressed to control the lighting of the key backlight 2, and Light-off control after a fixed time is performed.

FIG. 8 shows processing of a conventional mobile phone device. This processing is executed by the control circuit 3. In the figure, "S" represents a step (hereinafter, common to each flowchart).
When the power key is pressed (S101), the control circuit 3 checks whether there is an incoming call (S102). When there is an incoming call, the control circuit 3 blinks the incoming LED 4 (S103). When it is determined that there is no incoming call, it is determined whether any key is pressed (S104). When it is determined that the key is pressed, the key backlight 2 is continuously turned on for a certain period of time (S105). When it is determined that no key is pressed, other processes (execution of various input / output operations, telephone directory function, mail function, memo function, etc.) are executed (S106). When the process in S106 ends, the process returns to S102, and the subsequent processes are repeatedly executed.

Japanese Patent Application Laid-Open No. Hei 4-241549 discloses illumination of a key. The condition is that the light sensor operates because the surroundings are dark and the touch sensor operates when the user picks up the mobile phone. To turn on the key backlight. As a result, the key backlight is turned on at the same time as the user picks up the mobile phone, so that the key operation can be performed immediately and the presence of the incoming call can be known from a remote place.
Also, in Japanese Patent Application Laid-Open No. 7-74691, in a mobile phone device having a housing with a folding structure, optical sensors provided at two or more locations simultaneously detect that the surroundings are dark, and furthermore, a dial key is operated. This turns on the key and the LED for the backlight of the LCD. Also, an LED (which is always lit while the power is on) is exposed on one side of the housing, and is configured to face one of the optical sensors when the housing is folded, so that only an incoming call can be made in this state. I have to. This makes it possible to determine whether the housing is open or closed without using a mechanical switch or sensor. In the closed state, only the incoming call is received, so that the battery consumption can be reduced.
Further, Japanese Patent Application Laid-Open No. H11-17785 (Japanese Patent No. 2944582) discloses a portable telephone device having a structure in which a housing is divided into two parts and folded. The optical sensor and the light detection unit face each other when the communication device is folded, and when a call is received in this state, the user can immediately start a call by opening the housing.

  However, according to the conventional mobile phone device, in the configuration of FIGS. 7 and 8, since the key backlight 2 and the incoming LED 4 are separately provided, the area occupied by components on the printed circuit board is increased, and the mounting efficiency is deteriorated. Further, the number of parts, the weight, the volume, and the cost are increased.

  In addition, since each of the above publications has a configuration including a key backlight and an incoming LED, the above-described problems cannot be solved. Also, in Japanese Patent Application Laid-Open Nos. 4-241549, 7-74691 and 11-17785, an optical sensor is used. It is used for turning on a light and for discriminating between a closed state and an open state in a foldable portable telephone device, and is not used for other purposes.

  Therefore, an object of the present invention is to provide a mobile telephone device in which a key backlight or a liquid crystal display backlight can be used also for notification of an incoming call, and an incoming call can be notified without providing an incoming call LED.

  In order to achieve the above object, the present invention provides an optical sensor that detects the brightness of a place of use, an incoming call detection unit that detects an incoming call, a key backlight provided on the back of a key, and a key backlight. A control unit for controlling the lighting, the control unit, the optical sensor detects that the location of use is less than a predetermined brightness, and, when the incoming call detection unit detects the presence of an incoming call, the key A mobile telephone device characterized by blinking a backlight.

  In order to achieve the above object, the present invention provides an optical sensor that detects the brightness of a place of use, an incoming call detection unit that detects an incoming call, a key backlight provided on the back of a key, and a back of a liquid crystal display. And a control unit for controlling lighting of the key backlight and the liquid crystal display backlight, wherein the control unit is configured such that the optical sensor is used at a location where the brightness is equal to or less than a predetermined brightness. And when the incoming call detection unit detects that there is an incoming call, the backlight of the liquid crystal display is flickered.

  In order to achieve the above object, the present invention provides an optical sensor that detects the brightness of a place of use, an incoming call detection unit that detects an incoming call, a key backlight provided on the back of a key, and a back of a liquid crystal display. A backlight provided with a liquid crystal display, provided with a control unit that controls lighting of the key backlight and the liquid crystal display backlight, the control unit, when the incoming call detection unit detects the presence of an incoming call, The key backlight is turned on and off, and when the incoming call detection unit does not detect the presence of an incoming call, and the optical sensor detects that the place of use is equal to or less than a predetermined brightness, based on the pressing of the key, the A mobile telephone characterized by turning on a key backlight is provided.

  In order to achieve the above object, the present invention provides an optical sensor that detects the brightness of a place of use, an incoming call detection unit that detects an incoming call, a key backlight provided on the back of a key, and a back of a liquid crystal display. Provided with a backlight unit, and a control unit that controls the lighting of the key backlight and the backlight unit of the liquid crystal display, the control unit, when the incoming call detection unit detects the presence of an incoming call, The liquid crystal display light blinks, the incoming call detection unit does not detect the presence of an incoming call, and when the optical sensor detects that the place of use is lower than a predetermined brightness, based on the depression of the key, A mobile telephone is provided, wherein the key backlight and the liquid crystal display backlight are turned on.

According to this configuration, the key backlight or the liquid crystal display backlight blinks at the time of an incoming call, and the key backlight is continuously turned on when a key is pressed when the place of use is at or below a predetermined brightness. The user can distinguish between an incoming call and a key press depending on whether the key backlight or the liquid crystal display backlight blinks or lights continuously. As described above, since the key backlight or the liquid crystal display backlight is also used as the backlight and the incoming call indicator, there is no need to provide a dedicated incoming call LED as in the related art, thus improving the mounting efficiency of the printed circuit board and reducing the size and weight. And cost reduction can be achieved.
[The invention's effect]

  As is clear from the above, according to the mobile telephone device of the present invention, the key backlight or the liquid crystal display backlight blinks at the time of an incoming call, and these backlights are also used as the function of the conventional incoming LED. As described above, it is not necessary to provide an incoming call-only incoming LED, so that it is possible to improve the mounting efficiency of the printed circuit board, reduce the size and weight, and reduce the cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 shows a first embodiment of a mobile telephone device according to the present invention. In FIG. 1, the same reference numerals are used for the same components as those shown in FIG. 7, and thus redundant description will be omitted below.
As shown in FIG. 1, a mobile phone 10 as a mobile phone device includes a key backlight 2, a display 5, an antenna 6, a control circuit 7, and an optical sensor 8, and as described in [002], It is provided with keys for dial input, various function keys, a microphone, a speaker, and the like. The control circuit 7 has a function of executing the processing of FIG. 2 described later based on the output signal of the optical sensor 8.

  As is clear from FIG. 1, in this embodiment, no incoming call LED is provided. 2. Description of the Related Art In mobile phones, a function of notifying a user of an incoming call by an incoming call LED has been established as an essential function. Therefore, in the present embodiment, the key backlight 2 is also used as an incoming LED (incoming call display or incoming call notification). The optical sensor 8 is used to control a lighting state of the key backlight 2.

  Here, there are two lighting modes of the key backlight 2. That is, the first is a key backlight which is continuously illuminated on the back of each key when any key is pressed, and the second is blinking when there is an incoming call, Substitute for LED. When operating as a key backlight, the output signal of the optical sensor 8 is used, and when the control circuit 3 determines that the brightness around the mobile phone 10 (use place) is “bright”, the key backlight 2 is , And is turned off.

FIG. 2 shows an operation in the first embodiment of the present invention. The operation of the first embodiment will be described with reference to the flowchart of FIG. 2 and the configuration of FIG.
First, when the power key is pressed (S201), the control circuit 10 checks the output signal of the optical sensor 8, and the surroundings (use place) of the mobile phone 10 are bright (the key backlight 2 does not need to be turned on). ) Or dark (a state in which the key backlight 2 needs to be turned on) (S202). If it is determined that the surroundings (use place) are bright, the key backlight 2 is continuously turned off even if any key is pressed or there is an incoming call (S203). As a result, the battery consumption can be reduced, and the usable time of the battery can be extended.

  On the other hand, when it is determined that the surroundings (use place) are dark, it is determined whether there is an incoming call (S204). When it is determined that there is an incoming call, the control circuit 10 blinks the key backlight 2 (S205). When it is determined that there is no incoming call, it is determined whether or not any key is pressed (S206). When it is determined that the key is pressed, the key backlight 2 is continuously turned on for a certain period of time (S207). ). When it is determined in step S206 that no key is pressed, another process (execution of various input / output operations, a telephone directory function, a mail function, a memo function, and the like) is executed (S208). When the process in S208 ends, the process returns to S202, and the subsequent processes are repeatedly executed.

  As described above, according to the first embodiment, depending on whether the key backlight 2 blinks or lights continuously, it is possible to selectively use the key backlight 2 as the original backlight operation or the incoming call display. it can. Since the key backlight 2 blinks when an incoming call is made and turns on continuously when a key is pressed, it is possible to easily recognize whether the light is turned on due to an incoming call or pressed by a key. Therefore, no inconvenience arises even if the key backlight 2 is used for incoming call display. As described above, since the dedicated incoming call LED is not used for the incoming call display, the mounting efficiency of the printed circuit board is improved, the weight and the volume can be reduced (the size and weight can be reduced), and the cost can be reduced.

[Second embodiment]
FIG. 3 shows a second embodiment of the mobile telephone device according to the present invention. Also in the second embodiment, a mobile phone is used as a mobile phone device. In FIG. 3, the same reference numerals are used for the same components as those shown in FIG.
As shown in FIG. 3, the mobile phone 20 includes a key backlight 2, a display 5, an antenna 6, an optical sensor 8, an LCD backlight 21, and a control circuit 22, and, as described in [0010], It is provided with keys for dial input, various function keys, a microphone, a speaker, and the like. The control circuit 22 controls lighting of the key backlight 2 and the LCD backlight 21 based on the output signal of the optical sensor 8. The LCD backlight 21 also serves as the conventional incoming call LED 4, and the LCD backlight 21 blinks when an incoming call is received.

FIG. 4 shows an operation in the second embodiment of the present invention. The operation of the second embodiment will be described with reference to the flowchart of FIG. 4 and the configuration of FIG.
First, when the power key is pressed (S301), the control circuit 22 checks the output signal of the optical sensor 8, and the surroundings (use place) of the mobile phone 20 are bright (the LCD backlight 21 and the key backlight 2 are turned on). It is determined whether it is not necessary to perform the operation (step S302). If it is determined that the display is bright, the LCD backlight 21 and the key backlight 2 are continuously turned off even if any key is pressed or there is an incoming call (S303). As a result, the battery consumption can be reduced, and the usable time of the battery can be extended.

  On the other hand, when it is determined that the surroundings (use place) are dark, it is determined whether there is an incoming call (S304). When it is determined that there is an incoming call, the control circuit 22 causes the LCD backlight 21 to blink (S305). When it is determined that there is no incoming call, it is determined whether any key is pressed (S306). When it is determined that a key is pressed, the LCD backlight 21 and the key backlight 2 are continuously turned on for a certain period of time (S307, S308). When it is determined in step S306 that no key is pressed, other processes (executing various input / output operations, a telephone directory function, a mail function, a memo function, and the like) are executed (S309). When the processing in S309 ends, the processing returns to S302, and the subsequent processing is repeatedly executed.

  As described above, according to the second embodiment, depending on whether the LCD backlight 21 is blinking or continuously lit, the original backlight operation of the LCD backlight 21 or the incoming call display (the conventional incoming LED Function) can be used properly. Since the dedicated incoming LED is not used for the incoming call display, the mounting efficiency of the printed circuit board is improved, the weight and volume can be reduced, and the cost can be reduced.

FIG. 5 shows a third embodiment of the present invention.
In the present embodiment, a flow in which the determination of the presence of an incoming call (S204) in FIG. 2 is placed before S202. By doing so, the key backlight 2 flashes at the time of an incoming call regardless of the detection state of the optical sensor 8.
According to the third embodiment, the key backlight 2 blinks even when the place of use is bright, so that the incoming call can be surely recognized. In this case, even when the surroundings (the place of use) are bright, the key backlight 2 is driven to blink, so that the power consumption increases by that much. However, since the incoming call is less frequent than the key press, there is no problem.

FIG. 6 shows a fourth embodiment of the present invention.
In the present embodiment, the determination of the presence of an incoming call (S304) in FIG. By doing so, the LCD backlight 21 blinks at the time of an incoming call regardless of the detection state of the optical sensor 8. Note that the process of S303 is replaced by the process of S203 in FIG.
According to the fourth embodiment, the LCD backlight 21 flashes even when the surroundings (use place) are bright, so that it is possible to know the incoming call reliably. Also in this case, the LCD backlight 21 is driven to blink even when the surroundings (the place of use) are bright, so that the power consumption increases accordingly. However, the frequency of the incoming call is less than that of the key press, so there is no problem.

In each of the above embodiments, the emission colors of the key backlight 2 and the LCD backlight 21 are not described, but any color can be used. Further, in each of the above embodiments, the display of the incoming call is specified by blinking. However, a configuration may be adopted in which the display is changed to a specific color instead of blinking. For example, a configuration may be adopted in which a red or blinking light is emitted at the time of an incoming call, and a color other than red is emitted at the time of a backlight of a key and an LCD. Alternatively, a plurality of colors may be sequentially turned on (for example, a rainbow of seven colors).
Further, the description has been given of the mobile phone, but the present invention is also applicable to a mobile phone device such as a PHS or a car phone.
Further, in the above-described embodiment, at the time of an incoming call, one of the key backlight 2 and the LCD backlight 21 blinks. However, both the key backlight 2 and the LCD backlight 21 may blink at the same time.

FIG. 1 is a block diagram showing a first embodiment of a mobile telephone device according to the present invention. 5 is a flowchart illustrating an operation according to the first exemplary embodiment of the present invention. FIG. 6 is a block diagram showing a second embodiment of the mobile telephone device according to the present invention. 9 is a flowchart illustrating an operation according to the second exemplary embodiment of the present invention. 9 is a flowchart showing the operation of the third embodiment of the mobile telephone device according to the present invention. 9 is a flowchart showing the operation of the fourth embodiment of the mobile telephone device according to the present invention. FIG. 10 is a block diagram illustrating a configuration of a conventional mobile telephone device. 8 is a flowchart showing the operation of the mobile telephone device having the configuration shown in FIG.

Explanation of reference numerals

2 Key backlight 5 Display 7, 22 Control circuit 8 Optical sensor 10, 20 Mobile phone 21 LCD backlight

Claims (10)

An optical sensor that detects the brightness of the place of use,
An incoming call detector that detects an incoming call;
Key backlight provided on the back of the key,
A control unit for controlling the lighting of the key backlight,
The control unit is characterized in that the optical sensor detects that the place of use is below a predetermined brightness, and when the incoming call detecting unit detects that there is an incoming call, the key backlight blinks. Mobile phone equipment.   The control unit, when the optical sensor detects that the location of use is below a predetermined brightness, and when the incoming call detection unit does not detect the presence of an incoming call, the key back based on the key press The mobile telephone device according to claim 1, wherein the light is turned on.   The control unit is characterized in that when the optical sensor detects that the place of use is at least a predetermined brightness, the key backlight is kept turned off even if the incoming call detection unit detects that there is an incoming call. The mobile telephone device according to claim 1, wherein   The control unit, when the optical sensor detects that the place of use is at least a predetermined brightness, and when the incoming call detection unit does not detect the presence of an incoming call, even if the key is pressed, 2. The mobile telephone device according to claim 1, wherein the key backlight is kept off. An optical sensor that detects the brightness of the place of use,
An incoming call detector that detects an incoming call;
Key backlight provided on the back of the key,
A liquid crystal display backlight provided on the back of the liquid crystal display,
A control unit that controls lighting of the key backlight and the liquid crystal display backlight,
The control unit, wherein the optical sensor detects that the location of use is less than or equal to a predetermined brightness, and, when the incoming call detection unit detects that there is an incoming call, blinks the liquid crystal display backlight. Mobile telephone device.   The control unit, the optical sensor detects that the location of use is below a predetermined brightness, and, when the incoming call detection unit does not detect the presence of an incoming call, the liquid crystal display based on the key press 6. The mobile telephone device according to claim 5, wherein a backlight of the device and the key backlight are turned on.   When the light sensor detects that the location of use is below a predetermined brightness, the control unit turns off the liquid crystal display backlight and the key backlight even when the incoming call detection unit detects that there is an incoming call. 6. The mobile telephone device according to claim 5, wherein   The control unit is configured such that the optical sensor detects that the place of use is at or above a predetermined brightness, and that the incoming call detection unit does not detect the presence of an incoming call. The mobile telephone device according to claim 5, wherein the display backlight is kept off. An optical sensor that detects the brightness of the place of use,
An incoming call detector that detects an incoming call;
Key backlight provided on the back of the key,
A liquid crystal display backlight provided on the back of the liquid crystal display,
A control unit that controls lighting of the key backlight and the liquid crystal display backlight,
The control unit blinks the key backlight when the incoming call detecting unit detects an incoming call, the incoming call detecting unit does not detect the presence of an incoming call, and the light sensor uses a predetermined brightness. A mobile telephone, wherein the key backlight is turned on based on pressing of the key when the following is detected. An optical sensor that detects the brightness of the place of use,
An incoming call detector that detects an incoming call;
Key backlight provided on the back of the key,
A liquid crystal display backlight provided on the back of the liquid crystal display,
A control unit that controls lighting of the key backlight and the liquid crystal display backlight,
The control unit blinks the liquid crystal display light when the incoming call detection unit detects the presence of an incoming call, the incoming call detection unit does not detect the presence of an incoming call, and the light sensor uses a predetermined brightness. A mobile phone that turns on the key backlight and the liquid crystal display backlight based on the depression of the key when it is detected that the temperature is equal to or less than the threshold.