CN103000142A - Backlight brightness self-adaption adjusting circuit for intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD) - Google Patents
Backlight brightness self-adaption adjusting circuit for intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD) Download PDFInfo
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- CN103000142A CN103000142A CN2012105392753A CN201210539275A CN103000142A CN 103000142 A CN103000142 A CN 103000142A CN 2012105392753 A CN2012105392753 A CN 2012105392753A CN 201210539275 A CN201210539275 A CN 201210539275A CN 103000142 A CN103000142 A CN 103000142A
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Abstract
The invention relates to a backlight brightness self-adaption adjusting circuit for an intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD). The backlight brightness self-adaption adjusting circuit comprises an illumination brightness sensing circuit for detecting illumination intensity. The illumination brightness sensing circuit is connected with a control treatment circuit, and the control treatment circuit is connected with a TFT LCD backlight circuit through a backlight driving circuit. The control treatment circuit drives the TFT LCD backlight circuit through the backlight driving circuit according to input illumination brightness detected by the illumination brightness sensing circuit, so that brightness of the TFT LCD backlight circuit adapts to the illumination intensity detected by the illumination brightness sensing circuit. Current illumination intensity inside a vehicle is obtained through the illumination brightness sensing circuit, the control treatment circuit adjusts brightness of the TFT LCD backlight circuit by backlight driving circuit driving according to the illumination brightness detected by the illumination brightness sensing circuit, so that the backlight brightness of the TFT LCD backlight circuit adapts to the illumination intensity in the vehicle, display effect of the brightness of the vehicle-mounted TFT LCD backlight circuit is guaranteed, and the self-adaption adjusting circuit is simple and compact in structure, safe and reliable.
Description
Technical field
The present invention relates to a kind of regulating circuit, especially a kind of intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit belongs to the technical field of automotive electronics.
Background technology
At present, existing intelligent vehicle mounted terminal, the observer can go the brightness of adjustable liquid crystal display display backlight by manual operation when extraneous light intensity changes, to realize clearly display effect.Inconvenience for the observer, particularly driver, operation may also can cause safety problem when navigation.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit is provided, and it is simple and compact for structure, can regulate according to intensity of illumination the backlight illumination of TFT LCD, improve display effect, safe and reliable.
According to technical scheme provided by the invention, described intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit, comprise the illumination brightness sensing circuit for detection of intensity of illumination, described illumination brightness sensing circuit is connected with the control treatment circuit, and the control treatment circuit is connected with TFT LCD backlight circuit by backlight drive circuit; Described control treatment circuit detects the illumination brightness of input by backlight drive circuit drive TFT LCD backlight circuit according to illumination brightness sensing circuit, so that the intensity of illumination that the brightness of TFT LCD backlight circuit and illumination brightness sensing circuit detect adapts.
Described control treatment circuit comprises control processor, the VDD_3 end of described control processor, the VDD_2 end, the VDD_1 end, VDD_4 end and VDDA end interconnect, an and end of the VDD_3 of control processor end and the first electric capacity, one end of the second electric capacity, one end of the 3rd electric capacity, one end of the 4th electric capacity, one end of the 5th electric capacity, one end of one end of the 6th electric capacity and the first HF reject inductance connects, the other end of the first HF reject inductance is connected with the MCU input supply terminal, the other end of the first electric capacity, the other end of the second electric capacity, the other end of the 3rd electric capacity, the other end of the 4th electric capacity, the equal ground connection of the other end of the other end of the 5th electric capacity and the 6th electric capacity; The VSS_3 end of control processor, VSS_2 end, VSS_1 end, VSS_4 end and VSSA hold equal ground connection; The PB13 end of control processor connects illumination brightness sensing circuit, and the PB10 end of control processor is connected with the SDA end of storage chip by the 7th resistance, and the PB11 end of control processor is connected with the SCL end of storage chip by the 6th resistance;
The WP end ground connection of storage chip, the GND end ground connection of storage chip; The A0 end of storage chip, A1 end and A2 end all are connected with an end of the 5th resistance, and the other end of the 5th resistance is connected with the VCC end of MCU input supply terminal and storage chip, and the VCC end of storage chip is by the 13 capacity earth;
The PD0 OSC_IN end of control processor is connected the other end ground connection of the 8th electric capacity with an end of the first resistance, an end of crystal oscillator and an end of the 8th electric capacity; The PD1 OSC_OUT end of control processor is connected the other end ground connection of the 9th electric capacity with the other end of the first resistance, the other end of crystal oscillator and an end of the 9th electric capacity;
The NRST end of control processor is connected with an end of the 4th resistance, the other end of the 4th resistance is connected with an end of the 3rd resistance and an end of the 12 electric capacity, the other end ground connection of the 12 electric capacity, the other end of the 3rd resistance is connected with the MCU power input, the other end of the 3rd resistance is connected with the anode tap of a diode in the duodiode in the same way, the anode tap of another diode is connected with battery in the duodiode in the same way, the cathode terminal of diode is connected with the VBAT end of control processor in the duodiode in the same way, and the cathode terminal of the interior diode of duodiode passes through the 7th capacity earth in the same way.
Described illumination sensing circuit comprises optical sensor, the GND end ground connection of described optical sensor, the DQ end of optical sensor is connected with the sensing circuit power supply by the second resistance, the vdd terminal of optical sensor is connected with an end of the tenth electric capacity, an end of the 11 electric capacity and an end of the second HF reject inductance, the equal ground connection of the other end of the tenth electric capacity and the 11 electric capacity, the other end of the second HF reject inductance is connected with the sensing circuit power supply.
Described backlight drive circuit comprises the driving control chip, and the EN end of described driving control chip is connected the equal ground connection of the other end of the other end of the 15 electric capacity and the tenth resistance with an end of the 15 electric capacity, an end of the tenth resistance and an end of the 14 resistance; The output terminal that enables of the other end control treatment circuit of the 14 resistance connects; The IN end of driving control chip frequently suppresses an end of inductance with third high and an end of the 14 electric capacity links to each other, and the other end that third high suppresses inductance frequently is connected the other end ground connection of the 14 electric capacity with 5V voltage; The OVP end that drives control chip is connected with the 8th resistance, and forms the backlight electric power output cathode; The IN end that drives control chip is connected with the LX end that drives control chip by the first inductance;
The LX end that drives control chip also links to each other with the anode tap of the second diode, and the cathode terminal of the second diode links to each other with an end of the 16 electric capacity, an end of the 17 electric capacity, and forms the backlight electric power output cathode; The equal ground connection of the other end of the other end of the 16 electric capacity and the 17 electric capacity, and the other end of the 16 electric capacity and the other end of the 17 electric capacity all are connected with an end of the 4th HF reject inductance and an end of the 5th HF reject inductance, the equal ground connection of the other end of the other end of the 4th HF reject inductance and the 5th HF reject inductance; Drive the GND end ground connection of control chip, the FB end that drives control chip is connected with an end of the 13 resistance and an end of the 9th resistance, the other end of the 13 resistance is connected with an end of the 15 resistance and an end of the 18 electric capacity, the other end ground connection of the 18 electric capacity, the other end of the 15 resistance is connected with the driving signal end of control treatment circuit; The other end of the 9th resistance is connected with an end of the 11 resistance and an end of the 12 resistance, the other end of the 11 resistance and the other end ground connection of the 12 resistance; After being connected with the 11 resistance, the 12 resistance, the other end of the 9th resistance forms the backlight electric power output negative pole.
Advantage of the present invention: obtain intensity of illumination in front truck by the illumination sensing circuit, the control treatment circuit drives the brightness of regulating TFT LCD backlight circuit according to the intensity of illumination that the illumination sensing circuit detects by backlight drive circuit, thereby so that the illumination brightness in the backlight illumination of TFT LCD backlight circuit and the car adapts, guarantee the display effect of vehicle-mounted TFT LCD backlight circuit brightness, simple and compact for structure, safe and reliable.
Description of drawings
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is the circuit theory diagrams of illumination brightness sensing circuit of the present invention.
Fig. 3 is the circuit theory diagrams that the present invention controls treatment circuit.
Fig. 4 is the circuit theory diagrams of backlight drive circuit of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1: in order to regulate according to intensity of illumination in the vehicle backlight illumination of LCD, the present invention includes the illumination brightness sensing circuit 1 for detection of intensity of illumination, described illumination brightness sensing circuit 1 is connected with control treatment circuit 2, and control treatment circuit 2 is connected with TFT LCD backlight circuit 4 by backlight drive circuit 3; Described control treatment circuit 2 passes through backlight drive circuit 3 drive TFT LCD backlight circuits 4 according to the illumination brightness that illumination brightness sensing circuit 1 detects input, so that the intensity of illumination that the brightness of TFT LCD backlight circuit 4 and illumination brightness sensing circuit 1 detect adapts.
Particularly, in the embodiment of the invention, control treatment circuit 2 drives the brightness of regulating TFT LCD backlight circuit 4 by backlight drive circuit 3, refer to when illumination brightness sensing circuit 1 detection intensity of illumination is larger, then increase TFT LCD(Thin Film Transistor-LCDs by backlight drive circuit 3) brightness of backlight circuit 4, otherwise reduce the brightness of TFT LCD backlight circuit 4, adapt thereby form with the intensity of illumination that detects.
As shown in Figure 2: described illumination sensing circuit 1 comprises optical sensor U1, the GND end ground connection of described optical sensor U1, the DQ end of optical sensor U1 is connected with the sensing circuit power supply by the second resistance R 2, the vdd terminal of optical sensor U1 is connected with an end of the tenth capacitor C 10, an end of the 11 capacitor C 11 and the end of the second HF reject inductance FB2, the equal ground connection of the other end of the tenth capacitor C 10 and the 11 capacitor C 11, the other end of the second HF reject inductance FB2 is connected with the sensing circuit power supply.In the embodiment of the invention, optical sensor U1 adopts the TRC5120 cake core.
As shown in Figure 3: described control treatment circuit 2 comprises control processor U2, the VDD_3 end of described control processor U2, the VDD_2 end, the VDD_1 end, VDD_4 end and VDDA end interconnect, an and end of the VDD_3 of control processor U2 end and the first capacitor C 1, one end of the second capacitor C 2, one end of the 3rd capacitor C 3, one end of the 4th capacitor C 4, one end of the 5th capacitor C 5, the end of one end of the 6th capacitor C 6 and the first HF reject inductance FB1 connects, the other end of the first HF reject inductance FB1 is connected with the MCU input supply terminal, the other end of the first capacitor C 1, the other end of the second capacitor C 2, the other end of the 3rd capacitor C 3, the other end of the 4th capacitor C 4, the equal ground connection of the other end of the other end of the 5th capacitor C 5 and the 6th capacitor C 6; The VSS_3 end of control processor U2, VSS_2 end, VSS_1 end, VSS_4 end and VSSA hold equal ground connection; The PB13 end of control processor U2 connects illumination brightness sensing circuit 1, and the PB10 end of control processor U2 is connected with the SDA end of storage chip U3 by the 7th resistance R 7, and the PB11 end of control processor U2 is connected with the SCL end of storage chip U3 by the 6th resistance R 6;
The WP end ground connection of storage chip U3, the GND end ground connection of storage chip U3; The A0 end of storage chip U3, A1 end and A2 end all are connected with an end of the 5th resistance R 5, and the other end of the 5th resistance R 5 is connected with the VCC end of MCU input supply terminal and storage chip U3, and the VCC end of storage chip U3 is by the 13 capacitor C 13 ground connection;
The PD0 OSC_IN end of control processor U2 is connected the other end ground connection of the 8th capacitor C 8 with an end of the first resistance R 1, the end of crystal oscillator Y1 and an end of the 8th capacitor C 8; The PD1 OSC_OUT end of control processor U2 is connected the other end ground connection of the 9th capacitor C 9 with the other end of the first resistance R 1, the other end of crystal oscillator Y1 and an end of the 9th capacitor C 9;
The NRST end of control processor U2 is connected with an end of the 4th resistance R 4, the other end of the 4th resistance R 4 is connected with an end of the 3rd resistance R 3 and an end of the 12 capacitor C 12, the other end ground connection of the 12 capacitor C 12, the other end of the 3rd resistance R 3 is connected with the MCU power input, the other end of the 3rd resistance R 3 is connected with the anode tap of a diode in the duodiode D1 in the same way, the anode tap of another diode is connected with battery in the duodiode D1 in the same way, the cathode terminal of diode is connected with the VBAT end of control processor U2 in the duodiode D1 in the same way, and the cathode terminal of the interior diode of duodiode D1 passes through the 7th capacitor C 7 ground connection in the same way.In the embodiment of the invention, control processor U2 adopts STM32F10/3xC, and storage chip U3 adopts 24LC04-s08.
As shown in Figure 4: described backlight drive circuit 3 comprises driving control chip U4, the EN end of described driving control chip U4 is connected the equal ground connection of the other end of the other end of the 15 capacitor C 15 and the tenth resistance R 10 with an end of the 15 capacitor C 15, an end of the tenth resistance R 10 and an end of the 14 resistance R 14; The output terminal that enables of the other end control treatment circuit 2 of the 14 resistance R 14 connects; The IN end of driving control chip U4 frequently suppresses the end of inductance FB3 with third high and an end of the 14 capacitor C 14 links to each other, and the other end that third high suppresses inductance FB3 frequently is connected the other end ground connection of the 14 capacitor C 14 with 5V voltage; The OVP end that drives control chip U4 is connected with the 8th resistance R 8, and forms the backlight electric power output cathode; The IN end that drives control chip U4 is connected with the LX end that drives control chip U4 by the first inductance L 1;
The LX end that drives control chip U4 also links to each other with the anode tap of the second diode D2, and the cathode terminal of the second diode D2 links to each other with an end of the 16 capacitor C 16, an end of the 17 capacitor C 17, and forms the backlight electric power output cathode; The equal ground connection of the other end of the other end of the 16 capacitor C 16 and the 17 capacitor C 17, and the other end of the 16 capacitor C 16 and the other end of the 17 capacitor C 17 all are connected with the end of the 4th HF reject inductance FB4 and the end of the 5th HF reject inductance FB5, the equal ground connection of the other end of the other end of the 4th HF reject inductance FB4 and the 5th HF reject inductance FB5; Drive the GND end ground connection of control chip U4, the FB end that drives control chip U4 is connected with an end of the 13 resistance R 13 and an end of the 9th resistance R 9, the other end of the 13 resistance R 13 is connected with an end of the 15 resistance R 15 and an end of the 18 capacitor C 18, the other end ground connection of the 18 capacitor C 18, the other end of the 15 resistance R 15 is connected with the driving signal end of control treatment circuit 2; The other end of the 9th resistance R 9 is connected the other end ground connection of the other end of the 11 resistance R 11 and the 12 resistance R 12 with an end of the 11 resistance R 11 and an end of the 12 resistance R 12; After being connected with the 11 resistance R 11, the 12 resistance R 12, the other end of the 9th resistance R 9 forms the backlight electric power output negative pole.Drive control chip U4 and adopt RT9293.
The present invention obtains intensity of illumination in front truck by illumination sensing circuit 1, control treatment circuit 2 drives the brightness of regulating TFT LCD backlight circuit 4 according to the intensity of illumination that illumination sensing circuit 1 detects by backlight drive circuit 4, thereby so that the illumination brightness in the backlight illumination of TFT LCD backlight circuit 4 and the car adapts, guarantee the display effect of vehicle-mounted TFT LCD backlight circuit 4 brightness, simple and compact for structure, safe and reliable.
Claims (4)
1. intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit, it is characterized in that: comprise the illumination brightness sensing circuit (1) for detection of intensity of illumination, described illumination brightness sensing circuit (1) is connected with control treatment circuit (2), and control treatment circuit (2) is connected with TFT LCD backlight circuit (4) by backlight drive circuit (3); Described control treatment circuit (2) detects the illumination brightness of input by backlight drive circuit (3) drive TFT LCD backlight circuit (4) according to illumination brightness sensing circuit (1), so that the intensity of illumination that the brightness of TFT LCD backlight circuit (4) and illumination brightness sensing circuit (1) detect adapts.
2. intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit according to claim 1, it is characterized in that: described control treatment circuit (2) comprises control processor (U2), the VDD_3 end of described control processor (U2), the VDD_2 end, the VDD_1 end, VDD_4 end and VDDA end interconnect, an and end of the VDD_3 of control processor (U2) end and the first electric capacity (C1), one end of the second electric capacity (C2), one end of the 3rd electric capacity (C3), one end of the 4th electric capacity (C4), one end of the 5th electric capacity (C5), one end of one end of the 6th electric capacity (C6) and the first HF reject inductance (FB1) connects, the other end of the first HF reject inductance (FB1) is connected with the MCU input supply terminal, the other end of the first electric capacity (C1), the other end of the second electric capacity (C2), the other end of the 3rd electric capacity (C3), the other end of the 4th electric capacity (C4), the equal ground connection of the other end of the other end of the 5th electric capacity (C5) and the 6th electric capacity (C6); The VSS_3 end of control processor (U2), VSS_2 end, VSS_1 end, VSS_4 end and VSSA hold equal ground connection; The PB13 end of control processor (U2) connects illumination brightness sensing circuit (1), the PB10 end of control processor (U2) is connected with the SDA end of storage chip (U3) by the 7th resistance (R7), and the PB11 end of control processor (U2) is connected with the SCL end of storage chip (U3) by the 6th resistance (R6);
The WP end ground connection of storage chip (U3), the GND end ground connection of storage chip (U3); The A0 end of storage chip (U3), A1 end and A2 end all are connected with an end of the 5th resistance (R5), the other end of the 5th resistance (R5) is connected with the VCC end of MCU input supply terminal and storage chip (U3), and the VCC end of storage chip (U3) is by the 13 electric capacity (C13) ground connection;
The PD0 OSC_IN end of control processor (U2) is connected the other end ground connection of the 8th electric capacity (C8) with an end of the first resistance (R1), an end of crystal oscillator (Y1) and an end of the 8th electric capacity (C8); The PD1 OSC_OUT end of control processor (U2) is connected the other end ground connection of the 9th electric capacity (C9) with the other end of the first resistance (R1), the other end of crystal oscillator (Y1) and an end of the 9th electric capacity (C9);
The NRST end of control processor (U2) is connected with an end of the 4th resistance (R4), the other end of the 4th resistance (R4) is connected with an end of the 3rd resistance (R3) and an end of the 12 electric capacity (C12), the other end ground connection of the 12 electric capacity (C12), the other end of the 3rd resistance (R3) is connected with the MCU power input, the other end of the 3rd resistance (R3) is connected with the anode tap of the interior diode of duodiode (D1) in the same way, the anode tap of another diode is connected with battery in the duodiode (D1) in the same way, the cathode terminal of the interior diode of duodiode (D1) is connected with the VBAT end of control processor (U2) in the same way, and the cathode terminal of the interior diode of duodiode (D1) passes through the 7th electric capacity (C7) ground connection in the same way.
3. intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit according to claim 1, it is characterized in that: described illumination sensing circuit (1) comprises optical sensor (U1), the GND end ground connection of described optical sensor (U1), the DQ end of optical sensor (U1) is connected with the sensing circuit power supply by the second resistance (R2), one end of the vdd terminal of optical sensor (U1) and the tenth electric capacity (C10), one end of one end of the 11 electric capacity (C11) and the second HF reject inductance (FB2) connects, the equal ground connection of the other end of the tenth electric capacity (C10) and the 11 electric capacity (C11), the other end of the second HF reject inductance (FB2) is connected with the sensing circuit power supply.
4. intelligent vehicle-carried TFT LCD backlight illumination self-adaptation regulating circuit according to claim 1, it is characterized in that: described backlight drive circuit (3) comprises driving control chip (U4), the EN end of described driving control chip (U4) is connected the equal ground connection of the other end of the other end of the 15 electric capacity (C15) and the tenth resistance (R10) with an end of the 15 electric capacity (C15), an end of the tenth resistance (R10) and an end of the 14 resistance (R14); The output terminal that enables of the other end control treatment circuit (2) of the 14 resistance (R14) connects; The IN end of driving control chip (U4) frequently suppresses an end of inductance (FB3) with third high and an end of the 14 electric capacity (C14) links to each other, the other end that third high suppresses inductance (FB3) frequently is connected the other end ground connection of the 14 electric capacity (C14) with 5V voltage; The OVP end that drives control chip (U4) is connected with the 8th resistance (R8), and forms the backlight electric power output cathode; The IN end that drives control chip (U4) is connected with the LX end that drives control chip (U4) by the first inductance (L1);
The LX end that drives control chip (U4) also links to each other with the anode tap of the second diode (D2), the cathode terminal of the second diode (D2) links to each other with an end of the 16 electric capacity (C16), an end of the 17 electric capacity (C17), and forms the backlight electric power output cathode; The other end of the 16 electric capacity (C16) and the equal ground connection of the other end of the 17 electric capacity (C17), and the other end of the 16 electric capacity (C16) and the other end of the 17 electric capacity (C17) all are connected with an end of the 4th HF reject inductance (FB4) and an end of the 5th HF reject inductance (FB5), the equal ground connection of the other end of the other end of the 4th HF reject inductance (FB4) and the 5th HF reject inductance (FB5); Drive the GND end ground connection of control chip (U4), the FB end that drives control chip (U4) is connected with an end of the 13 resistance (R13) and an end of the 9th resistance (R9), the other end of the 13 resistance (R13) is connected with an end of the 15 resistance (R15) and an end of the 18 electric capacity (C18), the other end ground connection of the 18 electric capacity (C18), the other end of the 15 resistance (R15) is connected with the driving signal end of control treatment circuit (2); The other end of the 9th resistance (R9) is connected with an end of the 11 resistance (R11) and an end of the 12 resistance (R12), the other end of the 11 resistance (R11) and the other end ground connection of the 12 resistance (R12); After being connected with the 11 resistance (R11), the 12 resistance (R12), the other end of the 9th resistance (R9) forms the backlight electric power output negative pole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210539275.3A CN103000142B (en) | 2012-12-14 | 2012-12-14 | Backlight brightness self-adaption adjusting circuit for intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210539275.3A CN103000142B (en) | 2012-12-14 | 2012-12-14 | Backlight brightness self-adaption adjusting circuit for intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD) |
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| CN103000142A true CN103000142A (en) | 2013-03-27 |
| CN103000142B CN103000142B (en) | 2015-04-08 |
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| CN201210539275.3A Active CN103000142B (en) | 2012-12-14 | 2012-12-14 | Backlight brightness self-adaption adjusting circuit for intelligent vehicle-mounted thin film transistor (TFT) liquid crystal display (LCD) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676313A (en) * | 2013-11-29 | 2014-03-26 | 合肥京东方光电科技有限公司 | Illumination intensity adjustment method, device and system |
| CN107610674A (en) * | 2017-08-25 | 2018-01-19 | 维沃移动通信有限公司 | Screen luminance adjustment method and mobile terminal in a kind of navigation procedure |
| CN109285509A (en) * | 2018-11-29 | 2019-01-29 | 重庆长安汽车股份有限公司 | A kind of the display brightness control system and automobile of vehicle-carrying display screen |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003161926A (en) * | 2001-11-26 | 2003-06-06 | Hitachi Ltd | Method and device for lighting liquid crystal |
| US20030137485A1 (en) * | 2002-01-18 | 2003-07-24 | Chung-Kuang Wei | TFT-LCD capable of adjusting its light source |
| CN201465520U (en) * | 2009-03-31 | 2010-05-12 | 慧明光电(深圳)有限公司 | Automatic brightness control device of vehicle-mounted multimedia display screen |
| CN202217487U (en) * | 2011-08-26 | 2012-05-09 | 广东长虹电子有限公司 | Bottom lighting light-emitting diode (LED) back light control system |
| CN202976783U (en) * | 2012-12-14 | 2013-06-05 | 江苏中科天安智联科技有限公司 | Adaptive backlight luminance adjusting circuit for intelligent vehicular TFT (thin film transistor) LCD (liquid crystal display) |
-
2012
- 2012-12-14 CN CN201210539275.3A patent/CN103000142B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003161926A (en) * | 2001-11-26 | 2003-06-06 | Hitachi Ltd | Method and device for lighting liquid crystal |
| US20030137485A1 (en) * | 2002-01-18 | 2003-07-24 | Chung-Kuang Wei | TFT-LCD capable of adjusting its light source |
| CN201465520U (en) * | 2009-03-31 | 2010-05-12 | 慧明光电(深圳)有限公司 | Automatic brightness control device of vehicle-mounted multimedia display screen |
| CN202217487U (en) * | 2011-08-26 | 2012-05-09 | 广东长虹电子有限公司 | Bottom lighting light-emitting diode (LED) back light control system |
| CN202976783U (en) * | 2012-12-14 | 2013-06-05 | 江苏中科天安智联科技有限公司 | Adaptive backlight luminance adjusting circuit for intelligent vehicular TFT (thin film transistor) LCD (liquid crystal display) |
Non-Patent Citations (2)
| Title |
|---|
| 刘军: "《例说STM32》", 30 April 2011, 北京航空航天大学 * |
| 程昌南: "《ARM Cortex-A8硬件设计DIY》", 31 October 2012, 北京航空航天大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676313A (en) * | 2013-11-29 | 2014-03-26 | 合肥京东方光电科技有限公司 | Illumination intensity adjustment method, device and system |
| CN103676313B (en) * | 2013-11-29 | 2017-02-15 | 合肥京东方光电科技有限公司 | Illumination intensity adjustment method, device and system |
| CN107610674A (en) * | 2017-08-25 | 2018-01-19 | 维沃移动通信有限公司 | Screen luminance adjustment method and mobile terminal in a kind of navigation procedure |
| CN109285509A (en) * | 2018-11-29 | 2019-01-29 | 重庆长安汽车股份有限公司 | A kind of the display brightness control system and automobile of vehicle-carrying display screen |
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| Publication number | Publication date |
|---|---|
| CN103000142B (en) | 2015-04-08 |
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