KR100189424B1 - Back lighting device and control method for cellular phone - Google Patents
Back lighting device and control method for cellular phone Download PDFInfo
- Publication number
- KR100189424B1 KR100189424B1 KR1019960006411A KR19960006411A KR100189424B1 KR 100189424 B1 KR100189424 B1 KR 100189424B1 KR 1019960006411 A KR1019960006411 A KR 1019960006411A KR 19960006411 A KR19960006411 A KR 19960006411A KR 100189424 B1 KR100189424 B1 KR 100189424B1
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- backlighting
- brightness
- backlight
- cell phone
- surrounding environment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0267—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components
- H04W52/027—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components by controlling a display operation or backlight unit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Function (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
본 발명은 셀룰라폰의 백라이팅 밝기 조절 방법에 관한 것으로, 특히 주위 환경의 밝기 정도에 따라 백라이팅 밝기를 자동 조절하도록한 셀룰라폰의 백라이팅 밝기 조절 방법에 관한 것이다.The present invention relates to a method for adjusting the backlighting brightness of a cell phone, and more particularly, to a method for adjusting the backlighting brightness of a cell phone to automatically adjust the backlighting brightness according to the degree of brightness of the surrounding environment.
종래 셀룰라폰의 백라이팅 장치는 주위 환경의 밝기 정도에 상관없이 백라이팅함으로써, 전류 소모가 많고 전류 소모를 줄이기 위해 키패드를 누르는 등의 조작에 의해 일시 백라이팅해야 하는 불편한 문제점이 있었다.Conventional backlighting device of the cell phone has the inconvenience of having to temporarily backlight by pressing the keypad to consume a lot of current and to reduce the current consumption by backlighting regardless of the degree of brightness of the surrounding environment.
본 발명에 의해 주위 환경의 밝기 정도를 측정하고 측정된 값에 따라 백라이팅 구동 PWM 주파수를 백라이팅 구동부에 인가하여 백라이팅함으로써, 전류 소모를 감소시키고, 전류 소모 방지를 위해 키패드를 누르는 등의 조작이 필요없도록 하는 효과가 있다.According to the present invention, by measuring the brightness of the surrounding environment and applying backlighting driving PWM frequency to the backlighting driver according to the measured value, the backlight is reduced, so that the current consumption is reduced, and operation such as pressing a keypad is prevented. It is effective.
Description
제1도는 종래 셀룰라폰의 백라이팅 장치를 나타낸 블록도이고,1 is a block diagram showing a backlight device of a conventional cell phone,
제2도는 본 발명의 실시예에 따른 셀룰라폰의 백라이팅 장치를 나타낸 블록도이고,2 is a block diagram showing a backlight device of a cell phone according to an embodiment of the present invention,
제3도는 본 발명에 따른 셀룰라폰의 백라이팅 밝기 조절 방법을 나타낸 플로우챠트이다.3 is a flowchart illustrating a method of controlling backlight brightness of a cellular phone according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
12, 22 : 제어부 13, 23 : 백라이팅 구동부12, 22: control unit 13, 23: backlighting drive unit
14, 24 : 백라이팅부 21 : 센싱부14, 24: backlighting portion 21: sensing unit
본 발명은 셀룰라폰의 백라이팅 장치 및 밝기 조절 방법에 관한 것으로, 특히 주위 환경의 밝기 정도에 따라 백라이팅 밝기를 자동 조절하도록 한 셀룰라폰의 백라이팅 장치 및 밝기 조절 방법에 관한 것이다.The present invention relates to a backlighting device and a brightness control method of a cell phone, and more particularly, to a backlighting device and a brightness control method of a cell phone to automatically adjust the backlight brightness according to the degree of brightness of the surrounding environment.
종래 셀룰라폰의 백라이팅 장치는 제1도에 도시된 바와 같이, 타이머나 모드를 설정하여 백라이팅 구동부(13)를 제어하는 제어부(12)와; 제어부(12)의 제어에 따라 기설정된 전류를 인가받아 백라이팅부(14)를 구동하는 백라이팅 구동부(13)와; 백라이팅 구동부(13)에 의해 디스플레이나 키패드를 인지시키는 다수의 LED(Light Emitting Diode)를 포함하는 백라이팅부(14)를 포함하여 이루어진다.As shown in FIG. 1, the conventional backlighting apparatus for cellular phones includes a control unit 12 for setting a timer or a mode to control the backlighting driver 13; A backlighting driver 13 driving the backlighting unit 14 by receiving a predetermined current under the control of the controller 12; The backlighting driver 13 includes a backlighting unit 14 including a plurality of LEDs (Light Emitting Diodes) for recognizing the display or the keypad.
상기와 같이 구성된 종래 셀룰라폰의 백라이팅 장치의 동작은 다음과 같이 설명한다.The operation of the backlighting device of the conventional cellular phone configured as described above will be described as follows.
디스플레이나 키패드를 인지시키려면, 먼저 제어부(12)는 타이머나 모드 설정에 의해 백라이팅 구동부(13)의 동작 시간을 제어한다.In order to recognize the display or the keypad, first, the controller 12 controls the operation time of the backlight driver 13 by a timer or a mode setting.
이에, 백라이팅 구동부(13)는 제어부(12)의 제어에 따라 기설정된 전류를 인가받아 연속 또는 일시 동작하여 백라이팅부(14)의 LED를 일정한 밝기로 점등시키므로써, 디스플레이나 키패드를 인지시킬 수가 있다.Accordingly, the backlight driver 13 may continuously or temporarily operate by applying a predetermined current under the control of the controller 12 so as to light the LED of the backlight 14 with a constant brightness to recognize the display or the keypad. .
이와 같이, 종래 셀룰라폰의 백라이팅 장치는 주위 환경의 밝기 정도에 상관없이 백라이팅함으로써, 전류 소모가 많고 전류 소모를 줄이기 위해 키패드를 누르는 등의 조작에 의해 일시 백라이팅해야 하는 불편한 문제점이 있었다.As such, the backlighting apparatus of the conventional cell phone has an inconvenience of having to temporarily backlight by pressing a keypad to reduce the current consumption by increasing the current consumption and backlighting regardless of the degree of brightness of the surrounding environment.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 주위 환경의 밝기 정도에 따라 백라이팅 밝기를 자동 조절하도록 함으로써, 전류 소모를 감소시키고, 전류 소모 방지를 위해 키패드를 누르는 등의 조작이 필요없도록 하는 것을 목적으로 한다.The present invention is to solve the above problems, by automatically adjusting the backlight brightness according to the brightness of the environment, to reduce the current consumption, to avoid the need to press the keypad to prevent the current consumption. The purpose.
상기와 같은 목적을 달성하기 위한 본 발명의 특징은, 주위 환경의 광을 감지하여 백라이팅을 제어하는 셀룰라폰의 백라이팅 장치에 있어서, 센싱부에 의해 측정된 주위 환경의 밝기에 따라 백라이팅 구동 PWM 주파수를 결정하는 제어부와; 상기 제어부로부터 인가되는 백라이팅 구동 PWM 주파수에 따라 온/오프 반복 동작하여 밝기를 조절하여 백라이팅부의 LED를 점등시키는 백라이팅 구동부를 포함하는데 있다.A feature of the present invention for achieving the above object is, in a backlighting device of a cell phone for controlling the backlighting by sensing the light of the surrounding environment, according to the backlight driving PWM frequency according to the brightness of the surrounding environment measured by the sensing unit A control unit for determining; And a backlighting driver configured to turn on / off the LED of the backlighting unit by repeatedly adjusting the brightness on / off according to the backlighting driving PWM frequency applied from the controller.
본 발명의 또 다른 특징은, 셀룰라폰의 백라이팅 조절 방법에 있어서, 셀룰라폰의 구동을 감지하는 제1과정과; 주위 환경의 밝기를 측정하는 제2과정과; 상기 주위 환경의 밝기에 근거하여 백라이팅 밝기 정도를 결정하는 제3과정과; 상기 백라이팅 밝기 정도에 대응하는 백라이팅 구동 PWM 주파수를 생성하는 제4과정과; 상기 백라이팅 구동 PWM 주파수에 따라 백라이팅용의 다수 LED를 구동하는 제5과정을 포함하는데 있다.According to another aspect of the present invention, there is provided a method of controlling backlighting of a cellular phone, comprising: a first process of sensing driving of the cellular phone; A second process of measuring the brightness of the surrounding environment; Determining a backlight brightness degree based on the brightness of the surrounding environment; Generating a backlight driving PWM frequency corresponding to the backlight brightness level; And a fifth process of driving a plurality of LEDs for backlighting according to the backlight driving PWM frequency.
이하 첨부된 도면을 참조하여 다음과 같이 설명한다.Hereinafter, with reference to the accompanying drawings will be described as follows.
제2도는 본 발명의 실시예에 따른 셀룰라폰의 백라이팅 장치를 나타낸 블록도이고, 제3도는 본 발명에 따른 셀룰라폰의 백라이팅 밝기 조절 방법을 나타낸 플로우챠트이다.2 is a block diagram illustrating a backlighting apparatus of a cell phone according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating a method of controlling backlight brightness of a cellular phone according to the present invention.
본 발명의 실시예에 따른 셀룰라폰의 백라이팅 장치는 제2도에 도시된 비와 같이, 센싱부(21)와, 제어부(22)와, 백라이팅 구동부(23)와, 백라이팅부(24)를 포함하여 이루어진다.The backlighting apparatus of the cellular phone according to the embodiment of the present invention includes a sensing unit 21, a controller 22, a backlighting driver 23, and a backlighting unit 24, as shown in FIG. 2. It is done by
센싱부(21)는 주위 환경의 밝기를 측정한다.The sensing unit 21 measures the brightness of the surrounding environment.
제어부(22)는 상기 센싱부(21)로부터 측정된 값을 인가받아 백라이팅 구동 PWM(Pulse Width Modulation) 주파수를 결정하여 인가한다.The controller 22 receives the measured value from the sensing unit 21 to determine and apply a backlight driving pulse frequency (PWM) frequency.
백라이팅(24)는 디스플레이나 키패드를 인지시키기 위한 다수의 LED를 포함한다.Backlighting 24 includes a number of LEDs for recognizing a display or keypad.
백라이팅 구동부(23)는 상기 제어부(22)로부터 인가되는 백라이팅 구동 PWM 주파수에 따라 온/오프 반복 동작하여 상기 백라이팅부(24)의 LED를 점등시킨다.The backlighting driver 23 turns on / off the LED of the backlighting unit 24 by repeatedly turning on / off according to the backlighting driving PWM frequency applied from the controller 22.
본 발명의 실시예에 따른 셀룰라폰의 백라이팅 밝기 조절 방법을 다음과 같이 상세히 설명한다.The backlight brightness control method of the cellular phone according to the embodiment of the present invention will be described in detail as follows.
셀룰라폰이 동작되면, 제어부(22)는 이 셀룰라폰의 구동을 감지하여(단계 S1) 센싱부(21)를 구동시켜 주위 환경의 밝기를 측정하게 하고(단계 S2), 센싱부(21)로부터 측정된 값을 인가받아 백라이팅부(24)의 밝기 정도를 결정한다(단계 S3).When the cellular phone is operated, the controller 22 senses the driving of the cellular phone (step S1) and drives the sensing unit 21 to measure the brightness of the surrounding environment (step S2), and from the sensing unit 21 The brightness value of the backlighting unit 24 is determined by receiving the measured value (step S3).
이에, 제어부(22)는 결정된 밝기 정도값에 대응하는 백라이팅 구동 PWM 주파수를 결정하여 백라이팅 구동부(23)에 인가한다(단계 S4).Accordingly, the controller 22 determines the backlight driving PWM frequency corresponding to the determined brightness degree value and applies it to the backlighting driver 23 (step S4).
이에 따라, 백라이팅 구동부(23)는 제어부(22)로부터 인가되는 백라이팅 구동 PWM 주파수에 따라 밝기 조절 동작으로 온/오프 반복 동작하여(단계 S5) 백라이팅부(24)의 LED를 주위 환경의 밝기 정도에 따라 밝기 조절하여 점등시키므로써, 디스플레이나 키패드를 인지시킬 수가 있다(단계 S6).Accordingly, the backlighting driver 23 repeatedly turns on / off the brightness control operation according to the backlighting driving PWM frequency applied from the controller 22 (step S5) to bring the LED of the backlighting 24 to the brightness level of the surrounding environment. By adjusting the brightness accordingly, the display or the keypad can be recognized (step S6).
이상과 같이, 본 발명에 의하면, 주위 환경의 밝기 정도를 측정하고 측정된 값에 따라 백라이팅 구동 PWM 주파수를 백라이팅 구동부에 인가하여 백라이팅함으로써, 전류 소모를 감소시킬 수 있고, 전류 소모 방지를 위해 키패드를 누르는 등의 조작이 필요없도록 하는 효과가 있다.As described above, according to the present invention, by measuring the brightness degree of the surrounding environment and applying the backlight driving PWM frequency to the backlight driving unit according to the measured value, the backlight can be reduced, and the keypad is prevented to prevent the current consumption. There is an effect that no operation such as pressing is required.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960006411A KR100189424B1 (en) | 1996-03-11 | 1996-03-11 | Back lighting device and control method for cellular phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960006411A KR100189424B1 (en) | 1996-03-11 | 1996-03-11 | Back lighting device and control method for cellular phone |
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| Publication Number | Publication Date |
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| KR970068257A KR970068257A (en) | 1997-10-13 |
| KR100189424B1 true KR100189424B1 (en) | 1999-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019960006411A KR100189424B1 (en) | 1996-03-11 | 1996-03-11 | Back lighting device and control method for cellular phone |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100262653B1 (en) * | 1997-12-27 | 2000-08-01 | 서평원 | Method of controlling power supplied to backlight device in cdma type terminal equipment |
| KR19990055686A (en) * | 1997-12-27 | 1999-07-15 | 김영환 | LCD monitor auto brightness |
| KR20000038259A (en) * | 1998-12-04 | 2000-07-05 | 윤종용 | Portable telephone extending time using battery and controlling method thereof |
| KR100630087B1 (en) * | 1999-08-28 | 2006-09-28 | 삼성전자주식회사 | Back light driving method |
| KR20030035501A (en) * | 2001-10-31 | 2003-05-09 | 최은영 | cellularphone illuminator |
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