JPH09321853A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption by detecting the start/end of communication and controlling a back light so as to put out the back light during the communication when an operation part and a display part can not be viewed. SOLUTION: An operation detection part 5 outputs detection information to a control part 7 in the case of detecting that the operation part 4 is operated and the control part 7 controls a back light driving part 2 and lights the back light 1. In the case that lighting time set in a timer part 3 elapses or in the case that a communication detection part 6 detects the communication start before it elapses, the control part 7 controls the back light driving part 2 and puts out the back light 1. When the communication detection part 6 detects the communication end, the control part 7 controls the back light driving part 2 and lights the back light 1 again. For communication detection, whether or not a base station and a communication channel are connected can be detected by voice signals or the operation of a call origination button and an end button.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device, and more particularly to a portable telephone device in which an operating portion and a display portion are illuminated by a backlight.

[0002]

2. Description of the Related Art A portable telephone device is downsized and lightened so that it can be conveniently carried, and its operating portion (operating button) and the display portion composed of an LCD are often small. Therefore, in order to make the operation unit and the display unit easy to see even in a dark place, there is a mobile phone device that has a backlight and illuminates the operation unit and the display unit with the backlight. However, the small and lightweight mobile phone device has a small battery capacity, so the power consumed by the lighting of the backlight does not become ridiculous. Therefore, the backlight is turned off when it is not in operation. It is configured to prevent power consumption.

FIG. 3 is a block diagram for explaining the outline of the configuration of the backlight control unit of the conventional portable telephone device as described above. In FIG. 3, 1 is a backlight for illuminating the operation unit and the display unit. Reference numeral 2 denotes a backlight drive unit that drives the backlight 1 (turns on / off) 3 is a timer unit that counts the lighting time of the backlight, and 4 is an operation in which operation buttons for the user to talk are arranged. Department,
Reference numeral 5 denotes an operation detection unit that detects when the operation unit 4 is operated by the user, and 7 indicates the backlight 1 is turned on for a certain period of time set in the timer unit 3 according to the information from the operation detection unit 5 indicating that the operation has been performed. The control unit controls the backlight drive unit 2.

The conventional apparatus is constructed as described above, and when the operation section 4 is operated by the user, the operation detection section 5 detects this and sends the information to the control section 7. Control unit 7
Controls the backlight drive unit 2 so as to turn on the backlight 1 for a fixed time set by the timer unit 3 based on this information. Therefore, when the user tries to start a call when making or receiving a call, the operation unit 4
When any one of the operation buttons is touched, the backlight 1 is turned on, the operation buttons of the LCD display section and the operation section 4 are illuminated, and the small display is easy to see even in a dark place, so that an erroneous operation or the like can be prevented. ing.

[0005]

The conventional control of the backlight of the portable telephone device is configured and operates as described above, but there is a waste of the backlight being turned on even when a call is started. In other words, the mobile phone device is smaller and lighter, its size is smaller than the handset of a normal telephone, and the display unit and operation unit cannot be visually observed because the handset is placed on the ear during a call, but operation is started. Since the backlight is turned on for a certain period of time after the start of operation, the backlight of the operation unit and display unit may be turned on even during a call that cannot be visually observed. However, that is wasted to that extent. Therefore, if the lighting time is set to be short in order to prevent this, there is a problem that the backlight is turned off while the operation button is being operated.

The present invention has been made in order to solve the above problems, and provides a portable telephone device capable of controlling the lighting of a backlight suitable for a small and lightweight portable telephone device and preventing wasteful consumption of battery power. It is intended to be provided.

[0007]

A portable telephone device of the present invention comprises a call detecting portion for detecting the start / end of a call, and when the start of a call is detected, the backlight is turned on when the backlight is on. Is turned off, and when the end of the call is detected, the backlight is turned on for a certain period of time.

Further, the call detecting section is characterized in that it detects the start / end of a call by connecting / disconnecting a call channel between the portable telephone device and the base station.

Further, the call detecting section starts / starts a call depending on the presence / absence of a voice signal obtained from the handset of the portable telephone device.
It is characterized in that the end is detected.

Further, the call detecting unit is characterized in that the start / end of the call is detected by a specific operation of the operation unit.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an outline of a configuration of a backlight control unit of a mobile phone device of the present invention, in which 1 is a backlight for illuminating an operation unit and a display unit,
2 is a backlight drive unit that drives (turns on / off) the backlight 1; 3 is a timer unit that counts the lighting time of the backlight; and 4 is an operation unit in which operation buttons for the user to talk are arranged. Reference numeral 5 is an operation detection unit that detects when the operation unit 4 is operated by the user, 6 is a call detection unit that detects whether or not the mobile phone device is in a call state, and 7 is a control unit that is operated. It is a control unit that controls the backlight drive unit 2 to turn on / off the backlight according to information from the detection unit 5 and the call detection unit 6.

The call detector 6 for detecting whether or not the portable telephone device is in a call state determines, for example, whether or not the portable telephone device is connected to a base station (not shown) and a call channel. The configuration may be performed by detecting the voice signal from the handset. Usually, in the case of making a call, the "call" button is pressed, in the case of a call, one of the buttons is pressed after the ringing tone to start the call, and in the case of ending the call, the "end" button. Since the button is pressed, the start / end of the call may be detected by these operations (hereinafter, such an operation is referred to as a specific operation).

FIG. 2 is a flow chart for explaining the operation of the backlight control section shown in FIG.
7 shows each processing step. When the operation detection unit 5 detects that the operation unit 4 is operated (step S1), this detection information is input to the control unit 7, and the control unit 7 controls the backlight drive unit 2 to control the backlight 1. Is turned on (step S2). When the call detector 6 detects the start of a call before the lighting time set by the timer 3 has elapsed (step S3), the controller 7 controls the backlight drive unit 2 to turn off the backlight 1. (Step S4).

In this case, the backlight is turned off until the call detection unit 6 detects the end of the call (step S5), and when the call ends, the control unit 7 causes the backlight drive unit 2 to operate. The backlight 1 is controlled and turned on again (return to step S2). Even if the lighting of the backlight is started, the call detection unit 6 does not detect the start of the call (step S3), and when the lighting time set in the timer unit 3 has elapsed (step S6), the step S6 is performed.
At step 7, the backlight 1 is turned off, and the operation of the operation unit 4 is awaited again.

Even when the operation unit 6 is operated by the above-mentioned operation, the backlight can be turned off during a call in which the lighting of the backlight is wasted in the portable telephone device, and wasteful consumption of battery power is prevented. be able to. When the operation unit 4 is operated, a call is normally started. Therefore, even if the backlight lighting time set in the timer unit 3 is set to be relatively long, a large increase in power consumption does not occur. Therefore, it is possible to perform control so that a sufficient lighting time can be obtained when not necessary, and a backlight lighting control suitable for a mobile phone device can be performed.

[0016]

As described above, in the portable telephone device of the present invention, the backlight control is performed so that the backlight is turned off during a call in which the operation portion and the display portion cannot be visually observed. There is an effect that it becomes possible to perform lighting control of the backlight suitable for the telephone device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a backlight control unit in a mobile phone device of the present invention.

FIG. 2 is a flowchart for explaining the operation of the embodiment shown in FIG. 1;

FIG. 3 is a block diagram showing a configuration of a backlight control unit in a conventional mobile phone device.

[Explanation of symbols]

 1 Backlight 2 Backlight drive unit 3 Timer unit 4 Operation unit 5 Operation detection unit 6 Call detection unit 7 Control unit

Claims (4)

[Claims] 1. A call detection unit for detecting the start / end of a call in a mobile phone device that performs backlight control of turning on the operation unit or display unit with a backlight for a certain period of time when the operation unit is operated. When the start of a call is detected, the backlight is turned off when the backlight is on, and when the end of the call is detected, the backlight is turned on for a certain period of time. Mobile phone device. 2. The call detection unit starts / starts a call by connecting / disconnecting a call channel between the mobile phone device and a base station.
The first aspect of the present invention is characterized by being configured to detect the end.
The mobile phone device according to the item. 3. The mobile phone according to claim 1, wherein the call detection unit is configured to detect the start / end of a call based on the presence / absence of a voice signal obtained from a handset of the mobile phone device. Telephone device. 4. The mobile phone device according to claim 1, wherein the call detection unit is configured to detect the start / end of a call by a specific operation of the operation unit.