CN112083793A - Low-power-consumption liquid crystal display video detection control method based on domestic processor - Google Patents
Low-power-consumption liquid crystal display video detection control method based on domestic processor Download PDFInfo
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- CN112083793A CN112083793A CN202010994526.1A CN202010994526A CN112083793A CN 112083793 A CN112083793 A CN 112083793A CN 202010994526 A CN202010994526 A CN 202010994526A CN 112083793 A CN112083793 A CN 112083793A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000011161 development Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
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Abstract
The invention discloses a low-power-consumption liquid crystal display video detection control method based on a domestic processor, which relates to the technical field of portable computers, and adopts the domestic processor and controls a mainboard to be electrified through an EC (embedded control unit); the display card sends a signal to the EC, and when a video is output, the processor detects the video signal and controls the liquid crystal screen to display and output; and when no video signal is output, the liquid crystal screen is closed through EC control. The invention can effectively control the power-on of the liquid crystal screen according to the signal sent by the display card, avoid unnecessary electric energy output and prolong the endurance time of the computer.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a low-power-consumption liquid crystal display video detection control method based on a domestic processor.
Background
With the continuous progress of society, the rapid development of social economy drives the continuous development of various social technologies. The computer has the advantages of large amount of stored information, convenience and quickness in obtaining information by a user and the like, and is widely applied. Processors are important components in computers, and relate to the performance of the computer. At present, the localization process is increasingly accelerated, the IC industry is taken as the key point of national development in each country, the localization of the processor is a great trend of future development, and the key technology for mastering the domestic processor has great practical significance. At present, the endurance problem of most portable computers becomes an important index for measuring the quality of the product, the power consumption of the traditional display chip is over 10W, and the detection of video signals is controlled by OSD, so that the occupied area of a mainboard is too large.
Disclosure of Invention
The technical task of the invention is to provide a low-power-consumption liquid crystal screen video detection control method based on a domestic processor, aiming at the defects, the power-on of a liquid crystal screen can be effectively controlled, unnecessary electric energy output is avoided, and the endurance time of a computer is prolonged.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a low-power-consumption liquid crystal display video detection control method based on a domestic processor adopts the domestic processor and controls a mainboard to be electrified through an EC (embedded control unit); the display card sends a signal to the EC, and when a video is output, the processor detects the video signal and controls the liquid crystal screen to display and output; and when no video signal is output, the liquid crystal screen is closed through EC control.
The method can control detection without a backlight circuit, carries out detection according to signals sent by the display chip, further realizes control over the liquid crystal screen according to the existence of backlight output, closes the liquid crystal screen when the backlight output does not exist through EC control, saves energy consumption, and prolongs the endurance time of equipment such as a computer.
Preferably, the domestic processor is a Feiteng 2000-4 processor; the display chip adopts SM768 chips.
The Feiteng 2000-4 processor integrates 4 Feiteng independently developed processor cores FTC663, is compatible with a 64-bit ARMv8 instruction set and a 16nm process, has the highest main frequency of 3.0GHz and the maximum power consumption of 10W, and reduces the chip power consumption to 3.8W under the condition of a single core at 1 GHz. In professional CPU performance test software SPEC2006, the FT-2000/4 full-chip actual measurement integer calculation score is 61.1, the floating point calculation score is 62.5, compared with the Feiteng previous generation desktop CPUFT-1500A/4, the score is improved by nearly 1 time, and the memory access bandwidth is improved by 3 times;
the display chip adopts SM768 chips, the power consumption is low, OSD chips are not needed, the design space is reduced, and the utilization rate of the main board is improved.
Furthermore, the processor is connected with the display chip through a PCIE multiplied by 2 signal, so that the processor can send control signals to the display chip for efficient transmission; the display chip is connected with the liquid crystal screen through LVDS signals, and the EC controls the mainboard to be electrified so as to realize the power supply control of each module.
Preferably, the method is implemented as follows:
when a user presses a set-up key, the EC controls the processor and the display card equipment to be powered on;
when the display chip outputs video signals, the display chip sends detect signals to the EC, and the EC judges the state of the signals and does not control the liquid crystal screen;
when the display chip does not output video signals, the display chip sends a detect signal to the EC, and the EC controls the liquid crystal screen through the control circuit by judging the state of the signal to close the liquid crystal screen.
Further, when the display chip outputs video signals, the sent signals are low level, and at the moment, the power supply circuit of the liquid crystal display is conducted; when the display chip does not output video signals, the sent signals are high level, and at the moment, the power supply circuit of the liquid crystal screen is not conducted.
Preferably, the liquid crystal screen power supply circuit realizes the switching between conduction and non-conduction through the mos tube.
Preferably, the liquid crystal screen adopts a Jingdong liquid crystal screen.
The invention also claims a low-power consumption device based on the domestic processor, which is provided with the domestic processor and a liquid crystal screen, wherein the liquid crystal screen is controlled to be closed by detecting whether the video signal is output or not; the display device comprises a liquid crystal screen, a processor, a power supply control module and an EC controller, wherein the liquid crystal screen is connected with a display chip for sending a video signal, the display chip is connected with the liquid crystal screen through an LXDS signal, the processor is connected with the display chip through a PCIE multiplied by 2 signal, and the EC controller is connected with the liquid crystal screen through the power supply control module.
When a user presses a set-up key, the EC controls the processor and the display card equipment to be powered on;
when the display chip outputs video signals, the display chip sends detect signals to the EC, and the EC judges the state of the signals and does not control the liquid crystal screen;
when the display chip does not output video signals, the display chip sends a detect signal to the EC, and the EC controls the liquid crystal screen through the control circuit by judging the state of the signal to close the liquid crystal screen.
Preferably, the power control module adopts an MOS transistor to realize switching between conduction and non-conduction of the power supply circuit, and supplies power to the liquid crystal display through the si425 DDY.
When the display chip outputs video signals, the sent signals are low level, and at the moment, the power supply circuit of the liquid crystal display is conducted; when the display chip does not output video signals, the sent signals are high level, and at the moment, the power supply circuit of the liquid crystal screen is not conducted.
Preferably, the domestic processor is a Feiteng 2000-4 processor, the display chip adopts an SM768 chip, and the liquid crystal screen adopts a Jingdong liquid crystal screen.
Compared with the prior art, the low-power-consumption liquid crystal display video detection control method based on the domestic processor has the following beneficial effects:
the method judges whether the video signal is output or not by detecting the signal sent by the display chip, and closes the liquid crystal screen when the video signal is not output, so as to achieve the purpose of reducing energy consumption and prolong the endurance time of the computer and other equipment. The method can judge whether the liquid crystal screen needs to be closed or not by detecting the video signal of the display chip, thereby using the EC controller to control the conduction of the power supply circuit, realizing the closing of the liquid crystal screen when no video signal is output, effectively reducing the energy consumption, needing no OSD chip and effectively saving the space of a mainboard.
Drawings
FIG. 1 is a system topology diagram of a low power consumption LCD video detection control method based on a domestic processor according to an embodiment of the present invention;
fig. 2 is a circuit diagram for implementing the control of the liquid crystal display according to the embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
A low-power consumption liquid crystal display video detection control method based on a domestic processor adopts the domestic processor and controls a main board to be electrified through an EC; the display card sends a signal to the EC, and when a video is output, the processor detects the video signal and controls the liquid crystal screen to display and output; and when no video signal is output, the liquid crystal screen is closed through EC control.
Whether the video signal is output or not can be judged according to the information sent by the display card, and then the EC controller controls the power supply circuit through the control module under the condition of no signal output, so that the conduction and the non-conduction of the liquid crystal screen power supply circuit are realized.
In this embodiment, the domestic processor is a Feiteng 2000-4 processor. The Feiteng 2000-4 processor integrates 4 Feiteng independently developed processor cores FTC663, is compatible with a 64-bit ARMv8 instruction set and a 16nm process, has the highest main frequency of 3.0GHz and the maximum power consumption of 10W, and reduces the chip power consumption to 3.8W under the condition of a single core at 1 GHz. In professional CPU performance test software SPEC2006, the FT-2000/4 full-chip actual measurement integer calculation score is 61.1, the floating point calculation score is 62.5, compared with the Feiteng previous generation desktop CPUFT-1500A/4, the score is improved by nearly 1 time, and the memory access bandwidth is improved by 3 times;
the display chip adopts SM768 chips. SM768 display chip, the low power dissipation just need not the OSD chip, reduces the design space, improves mainboard utilization ratio.
The processor is connected with the display chip through PCIE multiplied by 2 signals, so that the processor can transmit control signals to the display chip efficiently.
The liquid crystal screen adopts a domestic Jingdong liquid crystal screen. The display chip is connected with the liquid crystal screen through LVDS signals.
And the EC controls the mainboard to be electrified, realizes the power supply control of each module, and closes the liquid crystal screen when the display chip does not output video signals.
The method comprises the following concrete implementation processes:
when a user presses a set-up key, the EC controls the processor and the display card equipment to be powered on;
when the display chip outputs video signals, the display chip sends detect signals to the EC, and the EC judges the state of the signals and does not control the liquid crystal screen;
when the display chip does not output video signals, the display chip sends a detect signal to the EC, and the EC controls the liquid crystal screen through the control circuit by judging the state of the signal to close the liquid crystal screen.
The liquid crystal screen power supply circuit realizes switching between conduction and non-conduction through the mos tube.
Referring to fig. 2, when the display chip SM768 outputs a video signal, the sent FPENO signal is at a low level, mos1 is not turned on, and 12V supplies power to the liquid crystal panel through si425DDY at this time, so that the liquid crystal panel displays normally; when the display chip SM768 does not output video signals, the sent FPENO signals are high level, mos1 is conducted, mos2 is not conducted, the si425DDY is not conducted at the moment, namely, the power supply circuit of the liquid crystal screen is not conducted, and therefore the liquid crystal screen does not display.
The method can control detection without a backlight circuit, carries out detection according to signals sent by the display chip, further realizes control over the liquid crystal screen according to the existence of backlight output, closes the liquid crystal screen when the backlight output does not exist through EC control, saves energy consumption, and prolongs the endurance time of equipment such as a computer.
The embodiment of the invention also provides a low-power consumption device based on the domestic processor, which is provided with the domestic processor and the liquid crystal screen, and the liquid crystal screen is controlled to be closed by detecting whether the video signal is output or not; the equipment is also provided with an EC controller which controls the mainboard to be electrified; the display device comprises a liquid crystal screen, a processor, a power supply control module and an EC controller, wherein the liquid crystal screen is connected with a display chip for sending a video signal, the display chip is connected with the liquid crystal screen through an LXDS signal, the processor is connected with the display chip through a PCIE multiplied by 2 signal, and the EC controller is connected with the liquid crystal screen through the power supply control module.
The domestic processor is a Feiteng 2000-4 processor, the display chip adopts an SM768 chip, and the liquid crystal screen adopts a Jingdong liquid crystal screen.
The process that this equipment passes through the opening and closing of monitoring display chip signal control LCD screen is as follows:
when a user presses a set-up key, the EC controls the processor and the display card equipment to be powered on;
when the display chip outputs video signals, the display chip sends detect signals to the EC, and the EC judges the state of the signals and does not control the liquid crystal screen;
when the display chip does not output video signals, the display chip sends a detect signal to the EC, and the EC controls the liquid crystal screen through the control circuit by judging the state of the signal to close the liquid crystal screen.
The power supply control module adopts an MOS tube to realize the switching between conduction and non-conduction of a power supply circuit and supplies power to the liquid crystal display through the si425 DDY.
Referring to fig. 2, when the display chip SM768 outputs a video signal, the sent FPENO signal is at a low level, mos1 is not turned on, and 12V supplies power to the liquid crystal panel through si425DDY at this time, so that the liquid crystal panel displays normally; when the display chip SM768 does not output video signals, the sent FPENO signals are high level, mos1 is conducted, mos2 is not conducted, the si425DDY is not conducted at the moment, namely, the power supply circuit of the liquid crystal screen is not conducted, and therefore the liquid crystal screen does not display.
While the invention has been shown and described in detail in the drawings and in the preferred embodiments, it is not intended to limit the invention to the embodiments disclosed, and it will be apparent to those skilled in the art that various combinations of the code auditing means in the various embodiments described above may be used to obtain further embodiments of the invention, which are also within the scope of the invention.
Claims (10)
1. A low-power-consumption liquid crystal display video detection control method based on a domestic processor is characterized in that the domestic processor is adopted, and an EC (embedded control) is used for controlling a main board to be electrified; the display card sends a signal to the EC, and when a video is output, the processor detects the video signal and controls the liquid crystal screen to display and output; and when no video signal is output, the liquid crystal screen is closed through EC control.
2. The low-power-consumption liquid crystal display video detection control method based on the domestic processor as claimed in claim 1, wherein the domestic processor is a Feiteng 2000-4 processor; the display chip adopts SM768 chips.
3. The low-power-consumption liquid crystal display video detection control method based on the domestic processor according to claim 1 or 2, characterized in that the processor is connected with the display chip through a PCIE x 2 signal, the display chip is connected with the liquid crystal display through an LVDS signal, and the EC controls the mainboard to be powered on.
4. The method for controlling the video detection of the low-power-consumption liquid crystal display screen based on the domestic processor as claimed in claim 3, wherein the method is implemented as follows:
the EC controls the processor and the display card equipment to be powered on;
when the display chip outputs video signals, the display chip sends detect signals to the EC, and the EC judges the state of the signals and does not control the liquid crystal screen;
when the display chip does not output video signals, the display chip sends a detect signal to the EC, and the EC controls the liquid crystal screen through the control circuit by judging the state of the signal to close the liquid crystal screen.
5. The video detection control method for the low-power-consumption liquid crystal display screen based on the domestic processor is characterized in that when a video signal is output from a display chip, the sent signal is at a low level, and a power supply circuit of the liquid crystal display screen is switched on; when the display chip does not output video signals, the sent signals are high level, and at the moment, the power supply circuit of the liquid crystal screen is not conducted.
6. The domestic processor-based low-power-consumption liquid crystal display video detection control method of claim 5, wherein the liquid crystal display power supply circuit is switched between conduction and non-conduction through a mos tube.
7. The video detection control method for the low-power-consumption liquid crystal screen based on the domestic processor according to claim 3, wherein the liquid crystal screen adopts a Jingdong liquid crystal screen.
8. A low-power consumption apparatus based on domestic processor, the apparatus has domestic processor and LCD screen, characterized by that, also there are EC controllers, EC controller controls the main board to power on; the liquid crystal display is connected with a display chip, the processor is connected with the display chip through a PCIE multiplied by 2 signal, the display chip is connected with the liquid crystal display through an LXDS signal, and the EC controller is connected with the liquid crystal display through a power supply control module.
9. The domestic processor-based low power consumption device of claim 8, wherein the power control module uses MOS transistors to switch between conduction and non-conduction of the power supply circuit, and supplies power to the liquid crystal panel through si425 DDY.
10. The domestic processor-based low-power consumption device according to claim 8 or 9, wherein the domestic processor is a Feiteng 2000-4 processor, the display chip is an SM768 chip, and the LCD screen is a Jingdong LCD screen.
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| CN202010994526.1A CN112083793A (en) | 2020-09-21 | 2020-09-21 | Low-power-consumption liquid crystal display video detection control method based on domestic processor |
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| CN202010994526.1A CN112083793A (en) | 2020-09-21 | 2020-09-21 | Low-power-consumption liquid crystal display video detection control method based on domestic processor |
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| WO2010140286A1 (en) * | 2009-06-02 | 2010-12-09 | パナソニック株式会社 | Video display control system and video display control method |
| CN203573623U (en) * | 2013-11-15 | 2014-04-30 | 无锡市电子仪表工业有限公司 | Low power consumption control system of liquid crystal display backlight source |
| CN104808958A (en) * | 2015-04-29 | 2015-07-29 | 山东超越数控电子有限公司 | LVDS (Low-Voltage Differential Signaling) screen control method based on Shenwei notebook computer |
| CN205486095U (en) * | 2016-03-22 | 2016-08-17 | 浪潮集团有限公司 | Notebook based on homemade ARM processor |
-
2020
- 2020-09-21 CN CN202010994526.1A patent/CN112083793A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030070171A (en) * | 2002-02-21 | 2003-08-29 | 이미지퀘스트(주) | A system for managing a power comsumption of display |
| CN101661728A (en) * | 2008-08-25 | 2010-03-03 | 联想(北京)有限公司 | Display, method for controlling power supply thereof and computer |
| WO2010140286A1 (en) * | 2009-06-02 | 2010-12-09 | パナソニック株式会社 | Video display control system and video display control method |
| CN203573623U (en) * | 2013-11-15 | 2014-04-30 | 无锡市电子仪表工业有限公司 | Low power consumption control system of liquid crystal display backlight source |
| CN104808958A (en) * | 2015-04-29 | 2015-07-29 | 山东超越数控电子有限公司 | LVDS (Low-Voltage Differential Signaling) screen control method based on Shenwei notebook computer |
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