CN201583942U - Device for online writing EDID by USB - Google Patents

Device for online writing EDID by USB Download PDF

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Publication number
CN201583942U
CN201583942U CN2009202957290U CN200920295729U CN201583942U CN 201583942 U CN201583942 U CN 201583942U CN 2009202957290 U CN2009202957290 U CN 2009202957290U CN 200920295729 U CN200920295729 U CN 200920295729U CN 201583942 U CN201583942 U CN 201583942U
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CN
China
Prior art keywords
usb
edid
interface
online
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009202957290U
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Chinese (zh)
Inventor
王军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vtron Technologies Ltd
Original Assignee
Vtron Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vtron Technologies Ltd filed Critical Vtron Technologies Ltd
Priority to CN2009202957290U priority Critical patent/CN201583942U/en
Application granted granted Critical
Publication of CN201583942U publication Critical patent/CN201583942U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a device for online writing EDID by a USB, which is characterized by comprising an EDID online writer connected between a computer and display equipment, wherein the EDID online writer is connected with the computer by a USB interface and is connected with the display equipment by a video interface. The device can online write and update the content of the EDID, omit a series of troublesome processes of disassembling chips, writing on the programmer subsequently, then welding the chip subsequently and the like, and improve the efficiency of updating the EDID data.

Description

A kind of device by USB online burning EDID
Technical field
The utility model relates to the display device technical field, particularly a kind of device by USB online burning EDID (Extended Display Identification Data, external display device identification data).
Background technology
Along with the development of infotech, demonstration products such as LCD, Digital Television, combination are widely applied in people's the life.Display technique is maked rapid progress, and displayed image is more and more clear, and display size is increasing, shows that the resolution of product support is more and more higher.The video interface that shows product also develops into VGA (Video Graphics Array), the DVI (Digital Visual Interface) that supports high definition, and the HDMI of up-to-date support ultra high-definition (High Definition Multimedia Interface), DisplayPort interface.
In four kinds of video interfaces of above demonstration product, all generally use DDC (Display Data Chanel, DDC) technology.DDC is the information channel that is based upon between main frame and the display, the physical data of display directly can be defeated by main frame, and the plug-and-play feature of display is provided, and has improved ease for use well.The standard display device data message that display is transferred to host computer in the DDC communication just is called EDID.EDID inside includes manufacturer, product ID, EDID version information of display device etc., point out the display capabilities that display device is supported simultaneously, comprised the parameters such as chromaticity coefficent that the sequential of scope, the blanking signal of resolution, aspect ratio, field frequency, the line frequency of demonstration constitutes, shows.
The EDID data of these different video interfaces (VGA, DVI, HDMI, DisplayPort) all are different, the EDID data of every kind of interface all separate, stored in the special-purpose E2PROM (charged erasable and programable memory) of a slice by the total line traffic control of I2C.In traditional demonstration product development that has VGA, DVI, HDMI, DisplayPort interface, test, production, maintenance process, upgrade and pass through programmable device burning binary data file again after the EDID content need be dismantled the E2PROM chip, be welded on then on the integrated circuit board, again the computer video card be connected communication with the demonstration product and obtain EDID information.Because the EDID data of each video interface of display device are all different, each EDID interface all needs independent operation to go to finish renewal, and uses different processing apparatus to detect.This phenomenon especially in showing Products Development and maintenance process problem more outstanding because it is very low to upgrade the EDID data efficiency, not only wasted a large amount of human resources, also cause to show that Products Development, test, production, maintenance efficiency are low.
The utility model content
Upgrade the low problem of EDID data efficiency in the prior art in order to solve, the purpose of this utility model is to provide a kind of device by USB online burning EDID, this device can online burning and is upgraded the content of EDID, removed the dismounting chip from, burning on programmable device then, a series of loaded down with trivial details processes such as welding chip again; Can also pass through the very PC end software of user-centered interface, the online content of writing, revise, detect EDID; Improved the efficient of upgrading the EDID data.
For reaching above purpose, the utility model by the following technical solutions: a kind of device by USB online burning EDID is characterized in that: comprise the EDID online burning device that is connected between computing machine and the display device; Described EDID online burning device is connected with computing machine by USB interface, is connected with display device by video interface.
Described EDID online burning device comprises that the usb connecting port, the USB that connect successively change I2C interface control module and video interface module; Described usb connecting port is connected with computing machine, and described video interface module is connected with display device.
Described EDID online burning device also comprises the usb bus protection module that is connected between usb connecting port and the USB commentaries on classics I2C interface control module, and is connected the I2C bus protection module between USB commentaries on classics I2C interface control module and the video interface module.
Described USB changes the I2C interface control module and comprises the interface chip that is used for usb bus is transferred to the I2C bus; Described interface chip is connected between usb bus protection module and the I2C bus protection module.
The utility model compared with prior art has following advantage and beneficial effect:
(1) do not need ability burning data after the chip unloading, thereby provide simple and practical operation efficiently, improved the efficient of upgrading the EDID data, saved a large amount of manpowers, device resource to the user.
(2) EDID online burning device adopts USB interface, realizes from the power taking of computing machine USB port, dispense with outer connecting power; Interface adopts USB STD bus mode, and plug and play is convenient and swift.
Description of drawings
Fig. 1 is system framework figure of the present utility model;
Fig. 2 is the structural representation of EDID online burning device shown in Figure 1;
Fig. 3 is the structural representation that USB shown in Figure 2 changes the I2C interface control module.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the utility model comprises the EDID online burning device that is connected between computing machine and the display device, and described EDID online burning device is connected with computing machine by USB interface, is connected with display device by video interface.Described video interface is VGA interface or DVI interface or HDMI interface or DisplayPort interface.And only be connected with a display device at synchronization EDID online burning device.
Computing machine is used for realizing following function: USB interface is provided, so that realize usb communication with EDID online burning device, sends data command to EDID online burning device, and receive the data message that it returns; Move the PC end Control Software of very hommization, humanization alternate surface is provided, be convenient to online burning EDID data manipulation.The user is after clicking action buttons such as setting, reading and writing on the man-machine interactive system interface of computing machine, computing machine sends to EDID online burning device by USB interface with order of I2C bus configuration and EDID data, EDID online burning device is converted into the order of I2C bus data after receiving the usb data order, the EDID data are sent to the video port of display device by corresponding VGA, DVI, HDMI or DisplayPort interface, carry out I2C with the inside E2PROM of display device and communicate by letter, reach online and write, revise, detect the purpose of EDID content.
As shown in Figure 2, EDID online burning device comprises usb connecting port, usb bus ESD (the Electro Static Discharge that connects successively, static discharge) protection module, USB change I2C interface control module, I2C bus protection module, video interface module, and the power management module that is connected with above-mentioned each module respectively; Described video interface module is VGA interface module or DVI interface module or HDMI interface module or DisplayPort interface module, provide VGA, DVI, HDMI or DisplayPort video interface respectively, for EDID online burning device and being connected of display device provide communication interface.Wherein, the usb communication port that provides data to input or output is provided usb connecting port; Usb bus esd protection module provides the esd protection function of usb bus; Power management module is realized the power source conversion and the defencive function of each module of EDID online burning device; It is to utilize usb bus to change the special purpose interface chip of I2C bus that USB changes the I2C interface control module, realizes the usb bus data are converted to I2C bus data form; I2C bus protection module provides the defencive function of I2C bus.
As shown in Figure 3, USB changes the I2C interface control module and comprises and be specifically designed to interface chip USB2I2C, 12M crystal oscillator, status indicator lamp D1, peripheral resistance and the capacitance component that usb bus is transferred to the I2C bus; Wherein interface chip USB2I2C is built-in power supply electrifying reset circuit, USB pull-up resistors etc., pin UD+ and pin UD-can be directly connected on the usb bus of PC, directly realize being connected of I2C bus and upper PC, need not assist MCU (microcontroller).
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.

Claims (4)

1. the device by USB online burning EDID is characterized in that: comprise the EDID online burning device that is connected between computing machine and the display device; Described EDID online burning device is connected with computing machine by USB interface, is connected with display device by video interface.
2. the device by USB online burning EDID according to claim 1 is characterized in that: described EDID online burning device comprises that the usb connecting port, the USB that connect successively change I2C interface control module and video interface module; Described usb connecting port is connected with computing machine, and described video interface module is connected with display device.
3. the device by USB online burning EDID according to claim 2; it is characterized in that: described EDID online burning device also comprises the usb bus protection module that is connected between usb connecting port and the USB commentaries on classics I2C interface control module, and is connected the I2C bus protection module between USB commentaries on classics I2C interface control module and the video interface module.
4. the device by USB online burning EDID according to claim 3 is characterized in that: described USB changes the I2C interface control module and comprises the interface chip that is used for usb bus is transferred to the I2C bus; Described interface chip is connected between usb bus protection module and the I2C bus protection module.
CN2009202957290U 2009-12-30 2009-12-30 Device for online writing EDID by USB Expired - Fee Related CN201583942U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202957290U CN201583942U (en) 2009-12-30 2009-12-30 Device for online writing EDID by USB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202957290U CN201583942U (en) 2009-12-30 2009-12-30 Device for online writing EDID by USB

Publications (1)

Publication Number Publication Date
CN201583942U true CN201583942U (en) 2010-09-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102184741A (en) * 2011-02-28 2011-09-14 浪潮电子信息产业股份有限公司 Method for programming serial periphery interface (SPI) FLASH
CN103106889A (en) * 2013-02-25 2013-05-15 南京欧帝科技有限公司 Method utilizing automatic correction extended display identification data (EDID) to improve output resolution
CN103117081A (en) * 2012-11-09 2013-05-22 华容电子(昆山)有限公司 Display screen mainboard integrated circuit (IC) chip burning device
CN107688447A (en) * 2016-08-05 2018-02-13 宁波Gqy视讯股份有限公司 Image processing server and there is its ultrahigh resolution display system
CN108881800A (en) * 2017-05-12 2018-11-23 夏普株式会社 Display device, the setting method of information terminal therein and display system
CN109271176A (en) * 2018-08-09 2019-01-25 深圳市芯智科技有限公司 A kind of method of fast writing TypeC software

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102184741A (en) * 2011-02-28 2011-09-14 浪潮电子信息产业股份有限公司 Method for programming serial periphery interface (SPI) FLASH
CN103117081A (en) * 2012-11-09 2013-05-22 华容电子(昆山)有限公司 Display screen mainboard integrated circuit (IC) chip burning device
CN103106889A (en) * 2013-02-25 2013-05-15 南京欧帝科技有限公司 Method utilizing automatic correction extended display identification data (EDID) to improve output resolution
CN103106889B (en) * 2013-02-25 2016-08-31 南京欧帝科技股份有限公司 By automatically revising the method that EDID improves output resolution ratio
CN107688447A (en) * 2016-08-05 2018-02-13 宁波Gqy视讯股份有限公司 Image processing server and there is its ultrahigh resolution display system
CN108881800A (en) * 2017-05-12 2018-11-23 夏普株式会社 Display device, the setting method of information terminal therein and display system
CN108881800B (en) * 2017-05-12 2020-08-14 夏普株式会社 Display device, setting method of information terminal in display device, and display system
CN109271176A (en) * 2018-08-09 2019-01-25 深圳市芯智科技有限公司 A kind of method of fast writing TypeC software

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GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100915

Termination date: 20141230