JPH05227263A - Display system for cordless telephone set - Google Patents

Abstract

PURPOSE:To extend the reception time and talking time by interrupting a power supply for a display section so as to limit the display time when a prescribed time comes. CONSTITUTION:The cordless telephone set 100 consists of a display section 10, a speech section 20, a microcomputer 30, a key switch 40 and a power supply section 50. The display section 10 displays various information and the speech section 20 is used for talking with other telephone set. Then the microcomputer 30 implements connection/speech control and a witch 40 is a path for dial signal transmission. A timer means 70 controls an interrupt means 60 to interrupt a power supply for the display section 10. When the transmission of a dial signal is started at the time of dialing, a dial number is displayed on an LCD11 of the display section 10. Then the timer means 70 counts an elapsed time and when a prescribed elapsed time is reached, the interrupt means 60 interrupts a power supply for the display section 10 displaying the dial number and a talking charge. Then since the display of the display section 10 is implemented for a prescribed time only and the display time is limited, the reception time and the speech time are extended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display system for a cordless telephone having a display section. With the recent development of communication technology, it has become possible to realize wireless transmitters and receivers in a small size, light weight, and inexpensively, and cordless telephones, which wirelessly communicate between a master unit and a slave unit, have been widely used in telephones. Is coming.

Although some cordless telephone handsets have a display unit, the cordless telephone power source is not supplied from the parent unit, so that it is inevitably supplied from the built-in battery. Become.

Therefore, the consumption of power for display causes a reduction in the call time and the standby time. In such cordless telephones, there is a demand for a cordless telephone display system capable of prolonging the call time and the standby time.

[0004]

2. Description of the Related Art FIG. 4 shows a diagram for explaining a conventional example. The figure shows an example of a cordless telephone 100A used as a child device of a key telephone device.

In the figure, 11 is a liquid crystal display (hereinafter referred to as LCD) for performing various displays, 12 is an LCD driver for driving the LCD 11, and 21 is wireless communication with other telephones via a main unit (not shown). Radio circuit for performing, 22 is a voice circuit for making a call, 23 is a handset including a handset, 3
0 is a microcomputer (hereinafter referred to as a microcomputer) that performs various controls relating to connection and communication, 40 is a key switch for transmitting a dial signal, 51 is an internal battery that supplies power, 52 is a voltage that stabilizes the internal battery 51 A stabilizing circuit for doing so, A is an antenna.

When making a call, the dial number of the other party is transmitted by operating the key switch 40, and the microcomputer 30
The dial number is read and the LCD 11 is driven through the LCD driver 12 to display.

Also, when a call is established by connecting with the other party's telephone, the call charge accumulated over time is displayed on the LCD.
11 is displayed. Further, when an incoming call is received, the telephone number of the other party is decoded by the microcomputer 30 and the LCD 11 is driven through the LCD driver 12 to display.

FIG. 5 shows a time chart of a conventional example.
(A) is a time chart at the time of transmission. The dial signal transmission and the call operation of the cordless telephone are shown.

A dial number corresponding to and a call charge (or call time) are displayed. (B) is a time chart for incoming calls.

At the time of dialing, the microcomputer 30 decodes the telephone number of the other party. After dialing, make a call and display the other party's phone number until the call is completed.

[0011]

In the above-mentioned prior art example, the dialing signal is being sent when the call is being made, the telephone number of the other party is displayed during the connection operation, and the call charge or the call time is displayed when the call is in progress. At that time, the telephone number of the other party is displayed from the start of receiving the dial signal to the completion of the call.

Therefore, while the cordless telephone 100A is in use, some display is always displayed on the LCD 11, and power for display is always consumed. Thus, consuming power for display is essentially
The standby time required by the cordless telephone 100A,
It will shorten the talk time.

An object of the present invention is to realize a display system of a cordless telephone which can lengthen a receiving time and a call time by limiting a display time of a display unit within a fixed time.

[0014]

FIG. 1 is a block diagram for explaining the principle of the present invention. Reference numeral 100 in the figure is a cordless telephone, 10 in the cordless telephone 100 is a display unit for displaying various information, 20 is a call unit for making a call with another telephone via the base unit, and 30 is a connection. , A microcomputer for controlling a call, 40 is a key switch for sending a dial signal, and 50 is a power supply unit.

Reference numeral 60 denotes an interrupting means provided on the cordless telephone 100 for interrupting the power supply to the display unit 10, and 70 a time measuring means for controlling the disconnecting means 60.
At the completion of dialing at the time of making a call, at the time of completion of a call and at the time of receiving a call, the elapsed time is measured by the time measuring means 70, and when a predetermined time is reached, the disconnecting means 60 displays the dial number of the other party and the call charge. The power of the display unit 40 is cut off and the display of the display unit 10 is performed only within a predetermined time.

[0016]

When the cordless telephone 100 makes a telephone call with another telephone, the cordless telephone 100 makes a telephone call with another telephone via the master unit or the main unit.

Electric power for making a call with the cordless telephone 100 is supplied from a built-in power source section 50. Therefore, displaying various information on the display unit 10 is
The display unit 10 consumes power, and the call time and the standby time, which are the original functions of the cordless telephone 100, are shortened.

Therefore, the dial signal at the time of calling is displayed on the display unit 10 after the dial transmission is started, and the elapsed time is measured by the count signal 70. When the predetermined time is reached, the power supply of the display unit 10 is turned on. Is disconnected by the connection / disconnection means 60, and the call charge is displayed when the call is completed.
The counting means 70 measures the elapsed time, and when the predetermined time is reached, the power supply of the display unit 10 is disconnected by the disconnecting means 60.

The display of the telephone number of the other party at the time of receiving a call is also performed only within a predetermined time by the same operation as the display of the dial signal at the time of making a call. By such an operation, it is possible to reduce power consumption and prolong the call time and the standby time.

[0020]

FIG. 2 is a diagram for explaining an embodiment of the present invention.
The figure shows a cordless telephone 100. The LCD 11, the LCD driver 12, the wireless circuit 21, the voice circuit 22, the handset 23, and the microcomputer 3 in the cordless telephone 100.
0, key switch 40, built-in battery 51, stabilizing circuit 52
The antenna A has the same structure as described in the conventional example.

Further, 61 is the connecting / disconnecting means 6 described in the principle diagram.
Reference numeral 71 is a control switch, and 71 is a timer as the time measuring means 70. When the cordless telephone 100 makes a wireless call with another telephone via the main unit, its power is supplied from the built-in battery 51 through the stabilizing circuit 52.

In the present embodiment, when a dial signal is transmitted at the time of call origination, the dial number is displayed on the LCD 11, and at the same time, the control switch 61 causes the time set by the timer 71, for example, several seconds, to elapse.
The power supplied to the LCD 11 and the LCD driver 12 is cut off.

Further, the call charge is displayed even when the call is completed, and the power supplied to the LCD 11 and the LCD driver 12 is cut off by the control switch 61 when the time set by the timer 71 has elapsed.

Further, even when receiving, for a certain period of time,
Display the phone number of the other party. Although the timer 71 is configured as independent hardware in the embodiment,
It can also be realized by a software timer 72 (not shown) using the function of the microcomputer 30.

FIG. 3 shows a time chart of the embodiment of the present invention. (A) is a time chart at the time of transmission. The transmission of dial signals and the call operation of the cordless telephone 100 are shown.

The information generated in the microcomputer 30 for displaying on the LCD 11 is shown. Here, the call charges are accumulated over time. The operation of the control switch 61 is shown.
The information is displayed on the LCD 11 only when is ON. (B) is a time chart for incoming calls.

An operation of receiving a dial signal of a cordless telephone and a call operation will be described. The operation of the control switch 61 is shown.
LCD of the other party's telephone number only when is set to "ON"
11 is displayed.

When it is desired to reconfirm the display content after the display is completed, the specific pattern of the key switch 40 is operated to read the information written in the memory (not shown) of the microcomputer 30. It can be redisplayed.

With the above-mentioned structure, the power supply to the LCD 11 and the LCD driver 12 is limited to several seconds to reduce the power consumption, and the talk time and the waiting time are about 3 times.
It can be extended twice.

[0030]

According to the present invention, the time measuring means measures the elapsed time after the start of display, and when a predetermined time is reached,
By cutting off the display power supply supplied to the display unit, it is possible to realize a display system of a cordless telephone which can reduce power consumption and prolong call time and standby time.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating the principle of the present invention.

FIG. 2 is a diagram illustrating an embodiment of the present invention.

FIG. 3 is a time chart of an example of the present invention.

FIG. 4 is a diagram illustrating a conventional example.

FIG. 5 is a time chart of a conventional example.

[Explanation of symbols]

100, 100A Cordless telephone 10 Display section 11 LCD 12 LCD driver 20 Communication section 21 Radio circuit 22 Voice circuit 23 Handset 30 Microcomputer 40 Key switch 50 Power supply section 51 Built-in battery 52 Stabilization circuit 60 Interruption means 61 Control switch 70 Timing means 71 Timer A antenna

Claims (3)

[Claims] 1. A display system of a cordless telephone (100) having a display unit (10), comprising a display unit (10) for displaying various kinds of information and a call for communicating with another telephone via a master unit. Division (20)
And a microcomputer for controlling connection and call (30)
A cordless telephone (100) comprising a key switch (40) for transmitting a dial signal and a power supply section (50); an interruption means (60) for interrupting the power supplied to the display section (10); A time measuring means (70) for controlling the means (60) is provided, and the elapsed time is timed by the time measuring means (70) at the time of dialing when making a call, at the time of completion of a call and when receiving a call
When a predetermined time is reached, the connection / disconnection means (60) turns off the power source of the display unit (10) for displaying the dialed number of the other party and the call charge, and the display unit (1).
A display method of a cordless telephone characterized in that the display of 0) is performed only within a predetermined time. 2. A cordless telephone display system according to claim 1, wherein said clock means (70) comprises a software timer (72) of said microcomputer (30). 3. The destination dial number and the call charge displayed on the display unit (10) are stored in the memory (31) of the microcomputer (30), and the display on the display unit (10) ends. After that, the key switch (4
The cordless telephone display system according to claim 1, wherein the information is re-displayed on the display unit (10) by operating a specific button (0).