JPH06311085A - Selection calling receiver with display device - Google Patents

Abstract

PURPOSE:To provide a selection calling receiver with display device which is capable of unnecessitating a confirmation operation that a power source is turned on in the receiver, suppressing the consumption of a battery when the receiver is not used. CONSTITUTION:An LCD driver 18 driving a liquid crystal display device 20 is controlled by a CPU 16 and this CPU 16 is connected with a light receiving part 25. When a bright signal showing that the surroundings of a receiver is bright is outputted from the light receiving part 25, the CPU 16 controls the LCD driver 18 and drives the liquid crystal display device 20. When a dark signal showing that the surroundings of the receiver is dark is outputted from the light receiving part 25, the liquid crystal display device 20 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selective call receiver with a display device, and more particularly to an improved selective call receiver with a display device which can reduce the consumption of a driving battery.

[0002]

2. Description of the Related Art A selective call receiver used for mobile communication is usually driven by a battery and has a display section for displaying character information.

When the display unit is small or the display segment is small, the display unit consumes little power, so that the battery is not consumed so much even when information is constantly displayed.

Recently, however, the amount of information displayed has increased, and in addition to the conventional display of only numbers, alphabetic characters, hiragana characters, and even kanji characters have come to be displayed. Therefore, the size of the display unit is increased, the number of display segments is increased, and the power consumed by the display unit is also increased.

Therefore, if the information is always displayed, the battery will be greatly consumed and its life will be shortened, which is inconvenient for practical use.

Therefore, in such a selective call receiver with a display device, it is generally provided with a display timer to automatically turn off the display unit to suppress battery consumption after a certain period of time has elapsed after receiving a call. Has been done. Further, even when the message in the memory is read, the display section is automatically turned off by this display timer after the reading operation is performed.

[0007]

However, in the above case, if the display section is completely turned off, it is impossible to determine whether the receiver is normally powered on, and the receiver operates when necessary. It will make the user anxious about whether or not.

In this case, there is a problem that whether or not the receiver is normally powered on cannot be known unless an extra operation such as a message reading operation is performed.

The present invention has been made in view of the above conventional problems, and an object thereof is to turn on the display unit in the light and turn off the display unit in the dark to suppress the battery consumption, and to supply power to the receiver. (EN) It is possible to provide a selective call receiver with a display device, which makes it unnecessary to confirm that the device is included.

[0010]

In order to achieve the above object, the present invention is a selective call receiver with a display device having a display section for receiving a call signal and displaying a message, wherein a bright and dark surroundings are provided. A light-receiving unit that detects and generates a bright signal and a dark signal respectively corresponding to bright and dark, and the display unit is turned on when the bright signal is received, and the display unit is turned off when the dark signal is received. And a control unit for controlling the operation.

[0011]

According to the above structure, the display is turned on when it is bright such as when reading the display of the receiver in a bright place, and turned off when the receiver is dark in a pocket or bag of clothes. can do.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a preferred embodiment of the selective call receiver with a display device of the present invention.

The received signal received by the antenna 11 is amplified by the high frequency amplifier 12, and the waveform shaping unit 13 is provided.
At, noise is removed and converted into a digital signal. P-R
The selective call number data of the receiver itself is written in the OM 14. In the decoder 15, the waveform shaping section 13
The selective call signal is decoded from the digital signal output from the device and the transmitted selective call number data is obtained. This data is compared with its own selective call number data in the P-ROM 14, and when they match, the ringing signal and the message signal in the transmitted selective call signal are decoded to obtain the message data. The obtained message data is further decoded by the CPU 16 and temporarily stored in the RAM 17. Here, the CPU 16 constitutes the control unit of the present invention and controls the LCD driver 18.

The message data temporarily stored in the RAM 17 is output to the LCD driver 18 via the CPU 16. This message data is the LCD driver 18
Is transferred to and displayed on the liquid crystal display 20. Here, the LCD driver 18 and the liquid crystal display 20 constitute the display unit of the present invention.

Since the LCD driver 18 is controlled by the CPU 16 and the liquid crystal display 20 is driven by the LCD driver 18, the display of the liquid crystal display 20 is turned on and off according to an instruction from the CPU 16.

Power is supplied from the battery 21 to the entire selective call receiver. Power is directly supplied from the battery 21 to the power supply unit 22, and the power supply unit 22 supplies the CPU 16 and the LCD.
The boosted voltage is supplied to the driver 18.

Electric power is supplied from the battery 21 to the voltage controller 24 via the switch 23. From the voltage control unit 24, the stabilized voltage V _B is supplied to the high frequency amplification unit 12 and the waveform shaping unit 13. The voltage V _B is controlled by the voltage control unit 24 by the CPU 16 so that
It is a power supply voltage whose N / OFF is controlled.

The voltage V1 supplied from the battery 21 via the switch 23 is supplied to the amplifier 19 and the CPU 16. By supplying the voltage V1 to the CPU 16, the CPU 16 is notified that the receiver is powered on.

The light and dark around the selective call receiver is caused by the light receiving section 2.
Detected by 5. The light receiving unit 25 outputs a bright signal when the surroundings are bright (bright). When the surroundings are dark (dark), the light receiving unit 25 outputs a dark signal.
The light receiving unit 25 is connected to the CPU 16, and the bright signal and the dark signal are input to the CPU 16. CPU16
When a bright signal is input to the CPU 16, the CPU 16 controls the LCD driver 18 to turn on the liquid crystal display 20. When a dark signal is input, the liquid crystal display 20 is turned off.

The scroll switch 27 is operated when the message data temporarily stored in the RAM 17 is read out and passes the read signal to the CPU 16.

Next, the operation of the selective call receiver will be described.

When operating the selective call receiver, the switch 23 is closed. As a result, power is supplied to each part of the receiver, and the CPU senses that the power is on,
The CD driver 18 is activated, and the liquid crystal display 20 displays a mark indicating the standby state before receiving the selective call signal or the current time. This allows the user to switch 2
It can be seen that 3 is closed and a normal voltage is being supplied from the battery 21.

When the selective call signal is received with the switch 23 closed, a sound is emitted from the speaker 30. This ringing sound is generated as long as the battery is not dead and the switch 23 is closed, so that the user can know the reception of the selective call signal.

At this time, when the selective call receiver is put out in a bright place, a light signal is output from the light receiving section 25, and the LCD driver 18 drives the liquid crystal display 20 according to an instruction from the CPU 16 to display a predetermined message on the liquid crystal display 20. Is displayed in.
Therefore, the user can immediately read this message.

On the other hand, when the selective call receiver is not used,
It is thought that the receiver is in a pocket or bag of clothes, but the area around the receiver is dark at this time. Therefore, the dark signal is output from the light receiving unit 25. In this case, the LCD driver 18 stops the operation of the liquid crystal display 20 according to an instruction from the CPU 16, and the display is turned off.

A feature of the present invention is that when the selective call receiver is not used because it is stored in a pocket of clothes or the like, a dark signal is output from the light receiving unit 25 and the CPU 16 outputs L.
When the CD driver 18 is instructed to stop the operation of the liquid crystal display 20 to reduce the consumption of the battery 21, and when the receiver is used in a bright place, a light signal is output from the light receiving unit 25. The CPU 16 instructs the LCD driver 18 to drive the liquid crystal display 20, so that a predetermined display appears on the liquid crystal display 20 immediately without any special operation.

When it is desired to display the liquid crystal display 20 when the surroundings are dark, the CPU 16 drives the LCD driver 18 to display a predetermined display on the liquid crystal display 20 by operating the scroll switch 27. , Light receiving unit 25
It is also possible for the CPU 16 to judge the dark signal from the above and turn on the illumination lamp 26 to make the message data displayed on the liquid crystal display 20 easy to read.

[0029]

As described above, according to the present invention,
When the surroundings of the receiver are bright, the display can be turned on so that the display can appear immediately, and when the surroundings of the receiver are dark, the display can be turned off to reduce battery consumption. You can As a result, it is possible to provide a selective call receiver with a display device that can suppress battery consumption when not in use and can eliminate the need to confirm that the receiver is powered on.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a selective call receiver with a display device according to the present invention.

[Explanation of symbols]

 14 P-ROM 15 Decoder 16 CPU 17 RAM 18 LCD driver 20 Liquid crystal display 21 Battery 25 Light receiving part 26 Illumination lamp 27 Scroll switch

Claims (1)

[Claims] 1. A selective call receiver with a display device having a display unit for receiving a call signal and displaying a message, wherein the bright and dark surroundings are detected to correspond to the bright signal and the dark signal, respectively. A selection device with a display device, comprising: a light receiving unit that generates a signal; and a control unit that lights the display unit when receiving the bright signal and turns off the display unit when receiving the dark signal. Call receiver.