CN109408121A - EDID reading and configuring method, system and medium - Google Patents
EDID reading and configuring method, system and medium Download PDFInfo
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- CN109408121A CN109408121A CN201811095579.9A CN201811095579A CN109408121A CN 109408121 A CN109408121 A CN 109408121A CN 201811095579 A CN201811095579 A CN 201811095579A CN 109408121 A CN109408121 A CN 109408121A
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- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000012795 verification Methods 0.000 claims abstract 2
- 101150107276 hpd-1 gene Proteins 0.000 claims description 17
- 238000004088 simulation Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
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- 238000009432 framing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
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- 238000003780 insertion Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
- G06F9/4413—Plug-and-play [PnP]
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Abstract
The invention provides an EDID reading and configuring method, system and medium, comprising: a signal detection step: detecting an effective hot plug signal HPD, and acquiring EDID information of the display device according to the detected hot plug signal HPD; a display interface setting step: and verifying the EDID information of the display equipment according to the obtained EDID information of the display equipment, obtaining configuration information of the display equipment according to a verification result, and entering a display interface according to the obtained configuration information of the display equipment. According to the invention, the MCU is additionally arranged between the GPU and the display equipment, the HPD signal time sequence interconnected with the GPU is controlled by the MCU, and the EDID information is simultaneously read and configured, so that the problem of EDID information error caused by impedance mismatching and other factors due to overlong cables of the display equipment or interface conversion is solved, the wrong EDID information can be effectively isolated, and the reading and the configuration of EDID are safer and guaranteed.
Description
Technical field
The present invention relates to field of display devices, and specifically, EDID is read and configuration method, system and medium.In particular, it relates to
And a kind of safe and reliable EDID is read and configuration method.
Background technique
EDID (Extended Display Identification Data, external display device mark data) is a kind of
VESA standard data format, wherein the basic parameter comprising display equipment, such as manufacturer, name of product, supported resolution
Rate, RGB color value etc., these information are stored in the equipment-specific EEPROM of display.DDC (Display Data Channel,
Display data channel) it is host and the communication modes for showing equipment.Based on the demand of terminal user's plug-and-play feature, VESA group
It knits and defines DDC standard.Main equipment can be PC or other hosts, be display from equipment.EDID can in CRT, LCD and
It is used in the type of display in future.In fact in many stationary applica-tions, using display equipment when it is possible that display equipment
EDID information read error leads to not normally show and manually adjust.Patent document CN106507015A (application number:
201510562702.3) what is proposed controls MCU by toggle switch, and the EDID of display equipment is read in MCU control, it is known that dial-up is opened
It is weaker with property to close control, there is the problems such as fixed configuration, poor selectivity.EDID reading in this patent can have with configuration method
Effect solves problems.A kind of EDID data that patent document CN201622827U (application number: 201020133525.X) is proposed
The EDID information of mistake is not effectively isolated by the display device in MCU, also without controlling MCU using CPU, configures phase
Parameter is closed, configurability is weaker.
Patent document CN106507015A (application number: 201510562702.3) name disclose it is a kind of based on EDID operation
Distributor shows output method.What documents proposed controls MCU by toggle switch, and display equipment is read in MCU control
There is the problems such as fixed configuration, poor selectivity since toggle switch control is weaker with property in EDID information.
Patent document CN201622827U (application number: 201020133525.X) discloses a kind of EDID data and is set to MCU
In display device, MCU and video card including display device, it is characterised in that: the MCU is connected by I2C bus and video card
It connects；The MCU is built-in with the flash memory module for storing EDID data.What documents proposed is built-in with by MCU
For storing the flash memory module of EDID data, and unresolved the problem of being effectively isolated wrong EDID information, also without benefit
MCU is controlled with CPU, configures relevant parameter, configurability is weaker.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of EDID read with configuration method, system and
Medium.
A kind of EDID provided according to the present invention is read and configuration method, comprising:
Signal detection step: detecting effective hot plug signal HPD, according to the hot plug signal HPD detected, obtains aobvious
Show equipment EDID information；
Display interface setting steps: according to the display equipment EDID information of acquisition, school is carried out to display equipment EDID information
It tests, according to check results, display device configuration information is obtained, according to the display device configuration information of acquisition, into display interface；
It updates detecting step: having detected whether more newer command: if so, then return signal detecting step continues to execute；Otherwise,
Then terminate process.
Preferably, the signal detection step includes:
Analog signal invalidation step: the display equipment hot swap signal HPD1 of the invalid MCU simulation of MCU is enabled, to be shown set is waited
Standby access；
EDID information acquiring step: enabling MCU detection display equipment to the hot plug signal HPD of MCU, if detecting HPD,
MCU is enabled to obtain display equipment EDID information from the EEPROM of display equipment by DDC controller；If HPD is not detected, return
Analog signal invalidation step is returned to continue to execute.
Preferably, the display interface setting steps include:
EDID information checking step: the display equipment EDID information for enabling MCU will acquire is compared with EDID check information,
Judge show whether equipment EDID information is correct: if EDID information is correct, the effective HPD1 of MCU, GPU being enabled to read display equipment
EDID information is continued to execute into display interface into detecting step is updated；If showing, equipment EDID information is incorrect, remembers
It misreads number and adds 1, continued to execute into errors number judgment step；
Errors number judgment step: judge whether EDID information read error number exceeds default error number: if not surpassing
Error number is preset out, is returned to EDID information acquiring step and is continued to execute；If enabling MCU read pre- beyond default error number
If default EDID information, the MCU display equipment EDID information obtained is replaced with into preset default EDID information, return EDID
Information checking step continues to execute.
Preferably, the update detecting step includes:
Judge whether to show exception or receive EDID more newer command: if so, return signal detecting step continues to execute；
Otherwise, then terminate process.
Preferably, in the EDID information checking step, the display equipment EDID information that will acquire and EDID are verified
Information is compared, comprising:
EDID configuration specification is obtained according to EDID check information；
According to the EDID configuration specification of acquisition, judge to show whether equipment EDID information meets EDID configuration specification: if symbol
It closes, then determines to show that equipment EDID information is correct；Otherwise, then determine to show that equipment EDID information is incorrect.
A kind of EDID provided according to the present invention is read and configuration system, comprising:
Signal detection module: detecting effective hot plug signal HPD, according to the hot plug signal HPD detected, obtains aobvious
Show equipment EDID information；
Display interface setup module: according to the display equipment EDID information of acquisition, school is carried out to display equipment EDID information
It tests, according to check results, display device configuration information is obtained, according to the display device configuration information of acquisition, into display interface；
It updates detection module: having detected whether more newer command: if so, then call signal detection module；Otherwise, then terminate to flow
Journey.
Preferably, the signal detection module includes:
The invalid module of analog signal: the display equipment hot swap signal HPD1 of the invalid MCU simulation of MCU is enabled, to be shown set is waited
Standby access；
EDID data obtaining module: enabling MCU detection display equipment to the hot plug signal HPD of MCU, if detecting HPD,
MCU is enabled to obtain display equipment EDID information from the EEPROM of display equipment by DDC controller；If HPD is not detected, adjust
With the invalid module of analog signal；
Preferably, the display interface setup module includes:
EDID information checking module: the display equipment EDID information for enabling MCU will acquire is compared with EDID check information,
Judge show whether equipment EDID information is correct: if EDID information is correct, the effective HPD1 of MCU, GPU being enabled to read display equipment
EDID information is called into display interface and updates detection module；If showing, equipment EDID information is incorrect, and note misreads number
Add 1, call error number judgment module；
Errors number judgment module: judge whether EDID information read error number exceeds default error number: if not surpassing
Error number is preset out, calls EDID data obtaining module；If enabling MCU read preset default beyond default error number
The MCU display equipment EDID information obtained is replaced with preset default EDID information, calls EDID information checking by EDID information
Module；
The EDID information checking module, the display equipment EDID information that will acquire are compared with EDID check information
Compared with, comprising:
EDID configuration specification is obtained according to EDID check information；
According to the EDID configuration specification of acquisition, judge to show whether equipment EDID information meets EDID configuration specification: if symbol
It closes, then determines to show that equipment EDID information is correct；Otherwise, then determine to show that equipment EDID information is incorrect.
Preferably, the update detection module includes:
Judge whether to show exception or receive EDID more newer command: if so, call signal detection module；Otherwise, then
Terminate process.
A kind of computer readable storage medium for being stored with computer program provided according to the present invention, the computer journey
The step of EDID reading described in any of the above embodiments and configuration method are realized when sequence is executed by processor.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the present invention increases MCU in GPU and display equipment room, interconnects HPD signal timing with GPU by MCU control, simultaneously
It reads, configuration EDID information, solves because display equipment cable is too long or there are interface conversions to make the factors such as impedance mismatch
At EDID information errors the problem of, wrong EDID information can be effectively isolated, make the reading of EDID with configuration more safety have
It ensures.
2, the present invention by CPU Configuration Online MCU read display EDID information, solve user can not online manually more
It is new to read EDID problem, make the reading of EDID and configures more convenient reliable.
3, the present invention increases between GPU and the EDID link of display equipment for display equipment EDID information read error
MCU can be such that mistake EDID information is effectively isolated, and keep the reading of EDID and configuration more safety secure.
4, the present invention interconnects HPD signal timing with GPU by MCU control for display equipment EDID information read error,
It reads simultaneously, configure EDID information, make the reading of EDID and configuring more convenient effective.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is that the EDID of preference of the invention is read and configuration method structural framing schematic diagram.
Fig. 2 is that the EDID of preference of the invention is read and configuration method flow diagram.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
A kind of EDID provided according to the present invention is read and configuration method, comprising:
Signal detection step: detecting effective hot plug signal HPD, according to the hot plug signal HPD detected, obtains aobvious
Show equipment EDID information；
Display interface setting steps: according to the display equipment EDID information of acquisition, school is carried out to display equipment EDID information
It tests, according to check results, display device configuration information is obtained, according to the display device configuration information of acquisition, into display interface；
It updates detecting step: having detected whether more newer command: if so, then return signal detecting step continues to execute；Otherwise,
Then terminate process.
Specifically, the signal detection step includes:
Analog signal invalidation step: the display equipment hot swap signal HPD1 of the invalid MCU simulation of MCU is enabled, to be shown set is waited
Standby access；
EDID information acquiring step: enabling MCU detection display equipment to the hot plug signal HPD of MCU, if detecting HPD,
MCU is enabled to obtain display equipment EDID information from the EEPROM of display equipment by DDC controller；If HPD is not detected, return
Analog signal invalidation step is returned to continue to execute.
Specifically, the display interface setting steps include:
EDID information checking step: the display equipment EDID information for enabling MCU will acquire is compared with EDID check information,
Judge show whether equipment EDID information is correct: if EDID information is correct, the effective HPD1 of MCU, GPU being enabled to read display equipment
EDID information is continued to execute into display interface into detecting step is updated；If showing, equipment EDID information is incorrect, remembers
It misreads number and adds 1, continued to execute into errors number judgment step；Further, MCU is effectively or invalid by low and high level
HPD1 signal, specially high or low level need to be determined according to GPU handbook pin electrical characteristic.
Errors number judgment step: judge whether EDID information read error number exceeds default error number: if not surpassing
Error number is preset out, is returned to EDID information acquiring step and is continued to execute；If enabling MCU read pre- beyond default error number
If default EDID information, the MCU display equipment EDID information obtained is replaced with into preset default EDID information, return EDID
Information checking step continues to execute.Further, if default EDID information be the cured EDID configuration of MCU internal firmware.
Specifically, the update detecting step includes:
Judge whether to show exception or receive EDID more newer command: if so, return signal detecting step continues to execute；
Otherwise, then terminate process.
Specifically, in the EDID information checking step, the display equipment EDID information that will acquire and EDID are verified
Information is compared, comprising:
EDID configuration specification is obtained according to EDID check information；
According to the EDID configuration specification of acquisition, judge to show whether equipment EDID information meets EDID configuration specification: if symbol
It closes, then determines to show that equipment EDID information is correct；Otherwise, then determine to show that equipment EDID information is incorrect.
EDID provided by the invention is read with configuration system, and the EDID that can be given through the invention is read and configuration method
Steps flow chart is realized.Those skilled in the art can read the EDID and configuration method, be interpreted as the EDID read with
One preference of configuration system.
A kind of EDID provided according to the present invention is read and configuration system, comprising:
Signal detection module: detecting effective hot plug signal HPD, according to the hot plug signal HPD detected, obtains aobvious
Show equipment EDID information；
Display interface setup module: according to the display equipment EDID information of acquisition, school is carried out to display equipment EDID information
It tests, according to check results, display device configuration information is obtained, according to the display device configuration information of acquisition, into display interface；
It updates detection module: having detected whether more newer command: if so, then call signal detection module；Otherwise, then terminate to flow
Journey.
Specifically, the signal detection module includes:
The invalid module of analog signal: the display equipment hot swap signal HPD1 of the invalid MCU simulation of MCU is enabled, to be shown set is waited
Standby access；
EDID data obtaining module: enabling MCU detection display equipment to the hot plug signal HPD of MCU, if detecting HPD,
MCU is enabled to obtain display equipment EDID information from the EEPROM of display equipment by DDC controller；If HPD is not detected, adjust
With the invalid module of analog signal；
Specifically, the display interface setup module includes:
EDID information checking module: the display equipment EDID information for enabling MCU will acquire is compared with EDID check information,
Judge show whether equipment EDID information is correct: if EDID information is correct, the effective HPD1 of MCU, GPU being enabled to read display equipment
EDID information is called into display interface and updates detection module；If showing, equipment EDID information is incorrect, and note misreads number
Add 1, call error number judgment module；
Errors number judgment module: judge whether EDID information read error number exceeds default error number: if not surpassing
Error number is preset out, calls EDID data obtaining module；If enabling MCU read preset default beyond default error number
The MCU display equipment EDID information obtained is replaced with preset default EDID information, calls EDID information checking by EDID information
Module；
The EDID information checking module, the display equipment EDID information that will acquire are compared with EDID check information
Compared with, comprising:
EDID configuration specification is obtained according to EDID check information；
According to the EDID configuration specification of acquisition, judge to show whether equipment EDID information meets EDID configuration specification: if symbol
It closes, then determines to show that equipment EDID information is correct；Otherwise, then determine to show that equipment EDID information is incorrect.
Specifically, the update detection module includes:
Judge whether to show exception or receive EDID more newer command: if so, call signal detection module；Otherwise, then
Terminate process.
A kind of computer readable storage medium for being stored with computer program provided according to the present invention, the computer journey
The step of EDID reading described in any of the above embodiments and configuration method are realized when sequence is executed by processor.
Below by preference, the present invention is more specifically illustrated.
Embodiment 1:
As shown in Figure 1, a kind of safe and reliable EDID is read and configuration method structural framing.The structural framing is by showing
Component and display composition, display component includes CPU element, GPU unit and MCU unit, wherein by serial between CPU and MCU
Bus bar, the EDID signal of GPU are connected to after MCU and connect display eventually by the EDID signal of MCU.With traditional GPU
Direct-connected display device framework is compared, and invention increases MCU to do isolation control, by mistake EDID information effectively and GPU every
From；MCU control interconnects HPD signal timing with GPU, reads and upload EDID information, it is ensured that DDC can correctly report EDID；User
Display software can be used, send order configuration MCU, online updating EDID information.Display equipment phase is directly connected to traditional GPU
Than the present invention increases MCU isolation control in DDC link, and MCU control interconnects HPD signal timing with GPU, reads and uploads
EDID information.
As shown in Fig. 2, a kind of safe and reliable EDID is read and configuration method process, after system power-up, when display equipment
When access, the invalid HPD1 signal of MCU detects HPD signal, and obtains EDID information from the EEPROM of display equipment by DDC；
The EDID information that the EDID information for the display equipment that MCU will acquire is set with CPU compares, and whether judges display EDID information
Failure；When judging fault-free, the effective HPD1 signal of MCU, GPU reads the EDID information obtained in MCU by EDID；Work as judgement
When failure, MCU re-reads EDID information and is reported in stipulated number, and such as beyond number is limited, MCU then uses inside
Preset default EDID information simultaneously reports；After normally entering display interface, the transmittable configuration order of user to MCU, MCU receives life
EDID will be reacquired after order and is reported.The safe and reliable EDID, which is read with configuration method process, includes:
The invalid HPD1 signal of step 1:MCU waits equipment to be shown to access.
Step 2:MCU detects HPD signal, and when detecting display equipment access, MCU passes through DDC from display equipment
EDID information is obtained in EEPROM.
The EDID information of reading is compared by step 3:MCU with preset EDID check information, judges display EDID
Information correctness.
Step 4:EDID information is correct, and MCU effective HPD1, GPU reading EDID information is entered step into display interface
5；EDID information is incorrect, and MCU re-reads display EDID information, and calculating misreads number, such as without departing from specified error number
It is then transferred to step 2, configured if beyond predetermined number of times using MCU default EDID and enters step 3.
Step 5: after entering display interface, such as discovery shows exception or thinks to obtain EDID information online again, user Ke Tong
It crosses and sends EDID more newer command manually to MCU, enter step 1, terminate if the not sent EDID of user more newer command.
One skilled in the art will appreciate that in addition to realizing system provided by the invention in a manner of pure computer readable program code
It, completely can be by the way that method and step be carried out programming in logic come so that provided by the invention other than system, device and its modules
System, device and its modules are declined with logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion
The form of controller etc. realizes identical program.So system provided by the invention, device and its modules may be considered that
It is a kind of hardware component, and the knot that the module for realizing various programs for including in it can also be considered as in hardware component
Structure；It can also will be considered as realizing the module of various functions either the software program of implementation method can be Hardware Subdivision again
Structure in part.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of EDID is read and configuration method characterized by comprising
Signal detection step: detecting effective hot plug signal HPD, according to the hot plug signal HPD detected, obtains display and sets
Standby EDID information；
Display interface setting steps: according to the display equipment EDID information of acquisition, display equipment EDID information is verified, root
According to check results, display device configuration information is obtained, according to the display device configuration information of acquisition, into display interface；
It updates detecting step: having detected whether more newer command: if so, then return signal detecting step continues to execute；Otherwise, then it ties
Line journey.
2. EDID is read and configuration method according to claim 1, which is characterized in that the signal detection step includes:
Analog signal invalidation step: the display equipment hot swap signal HPD1 of the invalid MCU simulation of MCU is enabled, equipment to be shown is waited to connect
Enter；
EDID information acquiring step: MCU detection display equipment is enabled to enable to the hot plug signal HPD of MCU if detecting HPD
MCU obtains display equipment EDID information by DDC controller from the EEPROM of display equipment；If HPD is not detected, return
Analog signal invalidation step continues to execute.
3. EDID reading and configuration method according to claim 1, which is characterized in that the display interface setting steps packet
It includes:
EDID information checking step: the display equipment EDID information for enabling MCU will acquire is compared with EDID check information, judgement
Show whether equipment EDID information is correct: if EDID information is correct, the effective HPD1 of MCU, GPU being enabled to read display equipment EDID letter
Breath is continued to execute into display interface into detecting step is updated；If showing, equipment EDID information is incorrect, and note misreads secondary
Number plus 1, continues to execute into errors number judgment step；
Errors number judgment step: judge whether EDID information read error number exceeds default error number: if without departing from pre-
Wrong number is set out, EDID information acquiring step is returned and continues to execute；If enabling MCU read preset beyond default error number
Default EDID information, the MCU display equipment EDID information obtained is replaced with into preset default EDID information, returns to EDID information
Verification step continues to execute.
4. EDID is read and configuration method according to claim 1, which is characterized in that the update detecting step includes:
Judge whether to show exception or receive EDID more newer command: if so, return signal detecting step continues to execute；It is no
Then, then terminate process.
5. EDID reading and configuration method according to claim 3, which is characterized in that in the EDID information checking step,
The display equipment EDID information that will acquire is compared with EDID check information, comprising:
EDID configuration specification is obtained according to EDID check information；
According to the EDID configuration specification of acquisition, judge to show whether equipment EDID information meets EDID configuration specification: if meeting,
Determine that display equipment EDID information is correct；Otherwise, then determine to show that equipment EDID information is incorrect.
6. a kind of EDID is read and configuration system characterized by comprising
Signal detection module: detecting effective hot plug signal HPD, according to the hot plug signal HPD detected, obtains display and sets
Standby EDID information；
Display interface setup module: according to the display equipment EDID information of acquisition, display equipment EDID information is verified, root
According to check results, display device configuration information is obtained, according to the display device configuration information of acquisition, into display interface；
It updates detection module: having detected whether more newer command: if so, then call signal detection module；Otherwise, then terminate process.
7. EDID is read and configuration system according to claim 6, which is characterized in that the signal detection module includes:
The invalid module of analog signal: the display equipment hot swap signal HPD1 of the invalid MCU simulation of MCU is enabled, equipment to be shown is waited to connect
Enter；
EDID data obtaining module: MCU detection display equipment is enabled to enable to the hot plug signal HPD of MCU if detecting HPD
MCU obtains display equipment EDID information by DDC controller from the EEPROM of display equipment；If HPD is not detected, call
The invalid module of analog signal.
8. EDID is read and configuration system according to claim 6, which is characterized in that the display interface setup module packet
It includes:
EDID information checking module: the display equipment EDID information for enabling MCU will acquire is compared with EDID check information, judgement
Show whether equipment EDID information is correct: if EDID information is correct, the effective HPD1 of MCU, GPU being enabled to read display equipment EDID letter
Breath calls into display interface and updates detection module；If showing, equipment EDID information is incorrect, and note misreads number and adds 1, adjusts
With errors number judgment module；
Errors number judgment module: judge whether EDID information read error number exceeds default error number: if without departing from pre-
Wrong number is set out, EDID data obtaining module is called；If enabling MCU read preset default EDID beyond default error number
The MCU display equipment EDID information obtained is replaced with preset default EDID information, calls EDID information checking mould by information
Block；
The EDID information checking module, the display equipment EDID information that will acquire are compared with EDID check information,
Include:
EDID configuration specification is obtained according to EDID check information；
According to the EDID configuration specification of acquisition, judge to show whether equipment EDID information meets EDID configuration specification: if meeting,
Determine that display equipment EDID information is correct；Otherwise, then determine to show that equipment EDID information is incorrect.
9. EDID is read and configuration system according to claim 6, which is characterized in that the update detection module includes:
Judge whether to show exception or receive EDID more newer command: if so, call signal detection module；Otherwise, then terminate
Process.
10. a kind of computer readable storage medium for being stored with computer program, which is characterized in that the computer program is located
Reason device realizes the step of reading of EDID described in any one of claims 1 to 5 and configuration method when executing.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110377550A (en) * | 2019-07-15 | 2019-10-25 | 合肥联宝信息技术有限公司 | A kind of method and computer equipment for realizing display warm connection function |
| CN111710309A (en) * | 2020-06-30 | 2020-09-25 | 深圳Tcl数字技术有限公司 | Liquid crystal display screen driving method and device, liquid crystal display system and storage medium |
| CN112866608A (en) * | 2021-01-11 | 2021-05-28 | 浙江大华技术股份有限公司 | Adaptive setting method and device for HDMI resolution and electronic device |
| CN117055966A (en) * | 2023-10-13 | 2023-11-14 | 深圳中微电科技有限公司 | HDMI-based hot plug detection and processing method, device and storage medium |
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