LCD digital television register address shared method

A digital TV and register technology, which is applied in the field of LCD digital TV register address sharing, can solve the problem that the register space is not fully utilized, and achieve the effect of cost saving

Inactive Publication Date: 2008-04-16
NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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  • Abstract
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Problems solved by technology

When developing a new model of WIDEMONITOR, because the reference benchmark is the original NORMAL model, the input of HDCP must be considered. In the previous wide-screen model, the input of HDCP and EDID is stored through two 24C02 and one 24C16. The problem is that the register space of 24C16 is not fully utilized

Method used

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  • LCD digital television register address shared method

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Embodiment Construction

[0013] As shown in the figure, the LG widescreen LCD digital TV register includes digital chip 24C16 and digital chip 24C02. According to the size of the information data and the storage space of the original register, the LCD digital TV digital EDID input signal data is stored in the digital chip 24C02. Store the analog EDID signal data, OSD setting information data, and HDCP input signal data into the word chip 24C02. Among them, EDID information occupies 128 bytes, HDCP information occupies about 300 bytes, OSDsetting occupies about 800 bytes, and the storage space of 24C16 is 2K bytes, and 128 bytes can be allocated for EDID of analog signals, through the address of the software Realize the function of register address sharing by reallocating.

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Abstract

The invention, a method of sharing of LCD digital television register address, comprises a digital chip 24C16 and a digital chip 24C02, which is characterized in that the EDID input signal data of LCD digital television are stored in the digital chip 24C02, and the digital chip 24C02 is stored with model EDID signal data, OSD setting signal data, and HDCP input signal data. Under the condition that the display quality of the LCD digital television is not influenced and the work complication is not increased, the invention saves the cost of main board, thus realizing the same work effects compared with the original equipment.

Description

technical field [0001] The invention relates to a method for sharing registers, in particular to a method for sharing addresses of LCD digital TV registers. Background technique [0002] At present, the EDID data of WIDE MNT and the data of HDCP and OSD SETTING are stored on the motherboard with 2 different registers, among which 2 pieces of 24C02 EEPROM are used to store analog and digital EDID data respectively, and 1 piece of 24C16 EEPROM is used to store HDCP and OSD SETTING data. At present, in general widescreen monitors, DVI signals must have HDCP protocol, but it is not required in NORMAL models. Among them, the analog signal EDID input method: PC is connected to LG display through D-SUB line, and the EDID information (128 bytes) stored in the 24C02 EEPROM chip of the display main board is directly communicated with the PC host through SCLK and SDApin through DDC2B transmission mode , The PC reads the information in the EDID, and can identify a series of informatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/445H04N5/00G09G5/00G09G5/39G09G3/36H04N5/44
Inventor 李天白刘浩王克均
Owner NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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