KR950010730B1 - The cellular phone light - Google Patents

Abstract

The device prolongs the cellular phone operation time by preventing the needless battery power consumption caused by the backlight of the cellular phone. The device includes: a memory(9) which stores the setting time of the LCD backlight; a real timer(3) which continuously counts the current time using auxiliary battery; a CPU(1) which senses the key input from the keypad(2), analyzes the supplied data from the real timer(3), and provides the control signals to the backlight switch(8); and a main battery(5) which provides the power to the speech/data processing unit(6) and peripherals.

Description

Backlighting device and method of cell phone

1 is a block diagram of a conventional backlight device for a cell phone.

2 is a block diagram of a backlight device for a cell phone according to the present invention.

3 is a flowchart for realizing a backlight lighting method of a cellular phone according to the present invention.

* Explanation of symbols for main parts of the drawings

1: central processing unit 2: keypad

3: Real Timer 4: Secondary Battery

5: main battery 6: voice / data processing unit

7: LCD 8: Backlight switch

9: memory 10: switch.

The present invention relates to a backlight device and a method of a cell phone, in particular, the user sets the desired time zone to remember the backlight, and then consumes unnecessary battery caused by the back light generated when dialing by using a cell phone It relates to a backlight device and method for a cell phone to prevent the use of the cell phone to extend the time.

Referring to the backlight device of the conventional cell phone as follows.

As can be seen in FIG. 1 of the accompanying drawings, a keypad portion 2 having a dialing key, a send key, a call key, etc., an input signal detector 1a for detecting a signal supplied from the keypad portion 2 ) And a timer 1b for setting a time for back light illumination on the LCD 7 side by the control signal of the control unit 1b and the control signal of the control unit 1b which analyzes the input signal and supplies the corresponding signal to each circuit unit side. And a control signal output from the central processing unit 1 and a central processing unit 1 having an output signal processing unit 1C for outputting a signal for the backlight light supplied from the control unit 1b to the LCD 7 side. This is connected to the switching 8 for turning on / off the backlight on the LCD 7 side. When the user of the cellular phone drives the power key of the keypad 2, the key input detector 1a in the central processing unit 1 detects a key signal supplied from the keypad 2 and controls the signal for the control. Output to side 1B). The controller 1b analyzes the supplied signal and supplies the corresponding signal to the LCD 7 via the timer 1d and the output signal processor 1C. The timer 1d counts for a predetermined time set by the signal of the supplied control unit 1b, and the LCD 7 displays the central processing unit (for a predetermined time set by the timer 1d regardless of the brightness of the surrounding environment). The backlight is emitted by the control signal of 1). If a new key input from the keypad 2 is not detected during the predetermined time set by the timer 1d, the timer 1d is reset and initialized, and the backlight of the LCD 7 automatically disappears. do. If a new key input from the keypad 2 is detected at a predetermined time counting as the timer 1d, the timer 1d is reset to recount the predetermined time set from the beginning. The LCD 7 also emits back light for a predetermined time set by the timer 1d.

As described above, in the conventional cellular phone backlight device, regardless of the brightness of the environment, each of the initial power key input, dialing state, idle state, cell site transmission, call state, etc. Whenever a key input is detected in the state of the keypad unit, a predetermined time timer is activated and a backlight is emitted at the same time as the LCD unit, and thus the use time is shortened due to unnecessary battery consumption, thereby reducing call sensitivity.

The present invention has been made in view of the above-described problems, cell phone users by setting the desired time zone for the halo light in consideration of the brightness of the surrounding environment, and then using a cell phone to reduce the consumption of unnecessary batteries to extend the use time The purpose is to improve the call sensitivity accordingly.

In order to achieve the above object, the present invention provides a memory unit 9 for storing the set time as a key input of the keypad unit 2 for the time when the backlight of the LCD 7 is set in view of the brightness of the surrounding environment. And, even when the power key 10 of the cellular phone is “off”, the current time is continuously counted by the power supply by the auxiliary battery 4, and a signal for the output is sent to the central processing unit 1 side. Detects key input of the real timer 3 and the keypad 2, and analyzes the time of backlight illumination set in the memory 9 and the signal supplied from the real timer 3 A central processing unit (1) for outputting a signal to the backlight backlight switch (8), and switching the backlight lighting of the LCD (7) side on / off in accordance with a signal supplied from the central processing unit (1). Supply from backlight switch (8) and microphone (Mic) Is a voice / data processor 6 for processing the transmitted voice signal and the received data signal received from the cell site and outputting it to the CPU 1 side, and a main battery 5 for supplying voltage to each circuit. It provides a backlight device for a cell phone characterized in that it comprises.

In addition, a first step of reading the current time to counter when the power key is input in the state that the real-timer is operated by the power supply of the auxiliary battery and the time for the backlight light set in the memory, and after performing the first step A second step of determining whether the read current time is the time for which the back light is emitted by comparing the current time and the time for the set back light, and the current time compared after the second step is performed to turn off the back light. If it is determined that the time to make the backlight backlight of the LCD is off, and if it is determined that the comparison time is the time set to emit the backlight, the backlight to the LCD side and the third time counting the small time at the same time And detecting a new key input from the keypad within a predetermined time counted after performing the third step, performing the third step. And a fourth step of resetting the counting for a predetermined time so that the backlight is emitted from the beginning and the backlight is emitted for a predetermined time, and if the new key input is not detected, the backlight is turned off. Provide an illumination method.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a backlight device for a cellular phone according to the present invention, and FIG. 3 is a flowchart for realizing a backlight method for a cellular phone. As can be seen in FIG. 2, the backlight device of the cellular phone includes a central processing unit 1, a keypad unit 2, a real timer 3, an auxiliary battery 4, a main battery 5, and audio / Data processing section 6, LCD (7), backlight lighting switch 8, memory section 9, the switch 10 is configured. The central processing unit 1 detects a key input signal from the keypad unit 2, and back light illuminates in consideration of a signal supplied from a real-time counter 3 which is a real time counter using a cellular phone and ambient environment brightness. This firing time analyzes the signal supplied from the set memory unit 9 and outputs the corresponding signal to the LCD 7 side. The keypad 2 has a predetermined key such as a dialing key, a send key, a redial key, and the like. The real timer 3 receives power from the main battery 5 and the auxiliary battery 4 according to the switching of the switch 10 and counts the current time when the cellular phone is used to output a signal for the central processing unit ( Output to side 1).

The auxiliary battery 4 supplies power to the real timer 3 in a state in which the switch 10 is switched, that is, the power supply of the main battery 5 is turned off. The main battery 5 supplies the operating power to each circuit of the entire cellular phone, and the voice / data processing unit 6 processes the transmission voice of the user and the received data received from the cell site to process the central processing unit. Output from (1). The backlight backlight switch 8 turns on / off the backlight backlight on the LCD 7 side according to the control signal supplied from the central processing unit 1, and the memory unit 9 allows the user to consider the brightness of the surrounding environment. The set back light illumination time is stored, and the corresponding back light illumination setting time is output to the central processing unit 1 whenever the central processing unit 1 detects a key input.

The backlight lighting operation of the cellular phone configured as described above will be described.

When the cellular phone user sets the time for backlighting in consideration of the ambient brightness as the keypad unit 2 and stores it in the memory unit 9, the real-timer 4 is concerned with whether the cellular phone power key is on or off. The counter of the present time proceeds with the power supply by the auxiliary battery 4 without.

When the user makes a phone call, the power key of the keypad 2 is driven to switch the contact of the switch 10 so that the power of the main battery 4 is supplied to each circuit unit so that the cellular phone can be switched from an “off” state to an “on” state. It is switched to have an operation standby state (step 1). The central processing unit 1 senses the key input supplied and compares and analyzes the current time supplied from the real timer 3 and the back light illumination time set by the user supplied from the memory unit 9 (step 2). Step 3). If the time of the comparatively analyzed key input is the time when the backlight is set in the memory unit 9, the central processing unit 1 transmits a control signal for causing the backlight to be emitted through the backlight backlight switch 8; Output to the side and the counter in the central processing unit 1 are operated for a predetermined time (steps 5 and 6). If a new key input from the keypad unit 2 is not supplied within a predetermined time during which the counter in the central processing unit 1 counts (step 7), the central processing unit 1 supplies the backlighting switch to the backlight lighting switch 8. Outputs a control signal for turning off the backlight and the backlight switch 8 switches off the backlight backlight signal supplied to the LCD 7 according to the control signal of the central processing unit 1 to block the backlight backlight. When the controller detects a new key input within a predetermined time of counting off (step 4) and executes steps 5 and 5 above, the counter is reset to start a new counting and back light on the LCD 7 side during the counting time. Light up. If the time of the key analysis compared after the execution of the step 2 and the step 3 is the time for turning off the backlight light set in the memory unit 9, the central processing unit 1 sends a signal for the backlight lamp switching switch 8 Through the output to the LCD (7) side so that the LCD (7) does not emit backlighting.

As described above, the present invention sets the time of backlighting in consideration of the brightness of the surrounding environment so that the backlighting only emits a key signal input within the set time, thereby eliminating unnecessary battery loss, extending the use time, and providing sufficient power supply. This is to improve the sensitivity of the call.

Claims (2)

In the cellular phone, a memory unit 9 for storing the set time as a key input of the keypad unit 2 for the time when the backlight light on the LCD 7 side is set in consideration of the brightness of the surrounding environment, and the cellular phone Real Timer (3) which counts the current time continuously by the power supply by the auxiliary battery (4) even when the power key 10 of the " off " is turned off, and outputs a signal thereof to the CPU 1 side. And the key input of the keypad 2 to detect and analyze the time of backlight illumination set in the memory 9 and the signal supplied from the realtimer 3, and the signal for the backlight The central processing unit 1 outputting to the light switching switch 8 side, and the backlighting switching to switch on / off the backlight of the LCD 7 side according to the signal supplied from the central processing unit 1. Transmitted voice signal and cell supplied from switch 8 and microphone And a main battery (5) for processing the received data signal received from the site side and outputting the audio / data processor (6) to the central processing unit (1). The backlight device of the phone. A first step of reading the current time of countering when the power key is input in the state that the real-timer is operated by the power supply of the auxiliary battery, and the time of the backlight light set in the memory; and the current read after performing the first step. A second step of determining whether the current time read out is the time that the back light is emitted by comparing the time with the time for the set back light, and a time at which the comparison time after the second step is performed turns off the back light A third step of keeping the backlight of the LCD backlight off and counting a predetermined time while causing the backlight to illuminate on the LCD side when the current time judged as the comparison time is determined to be the backlight backlight; If the controller detects a new key input from the keypad within a predetermined time counting after the third step, the third step is performed. And a fourth step of resetting time counting so that the backlight is emitted from the beginning and the backlight is emitted for a predetermined time, and the backlight is turned off when a new key input is not detected. Way.