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Multi-functional difference red-green-blue (RGB) video generating device

A generation device and multi-functional technology, applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of no power-saving and energy-saving state mode, difficult flexible switching of video output state, waste of resources, etc., to achieve efficient and reasonable design Advanced, rich generation modes, full-featured effects

Active Publication Date: 2014-10-22
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] d) There is no power-saving and energy-saving state mode, resulting in waste of resources, and it is not easy to switch flexibly between video output states

Method used

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  • Multi-functional difference red-green-blue (RGB) video generating device
  • Multi-functional difference red-green-blue (RGB) video generating device
  • Multi-functional difference red-green-blue (RGB) video generating device

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Embodiment Construction

[0029] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0030] Such as image 3 Shown is a multifunctional differential RGB video generating device of the present invention, including a digital signal receiver, a video DA converter, a CPLD, a video differential driver, and a differential signal driver.

[0031] Such as Figure 4 As shown, the input signals in this embodiment are divided into two groups:

[0032] ①Original input digital video signal: DVI video;

[0033] ② Input control level signals: SEL1, SEL2.

[0034] The functional modules in the differential RGB video generation device are described in detail below according to the flow direction of the signal flow from left to right:

[0035] a) The selected digital signal receiver is the TFP401 chip developed by TI Company. This chip can receive the DVI video signal of a single TMDS...

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Abstract

The invention discloses a multi-functional difference red-green-blue (RGB) video generating device. The multi-functional difference RGB video generating device comprises a digital signal receiver, a video digital-analog (DA) converter, a complex programmable logic device (CPLD), a video difference driver and a difference signal driver, key operations of composite synchronizing signal generation, transmission delay control, output distribution control, electricity-saving energy-saving control and the like can be finished through a logical conversion software which resides in the CPLD, and multi-mode differential signal output can be achieved. The multi-functional difference RGB video generating device has the advantages that the whole design is efficient, reasonable and advanced, generating modes of difference RGB videos are extremely enriched, and motive power can be provided for the application and popularizing of the difference RGB videos.

Description

technical field [0001] The invention relates to a novel differential RGB video generating device, in particular to a multifunctional differential RGB video generating device. Background technique [0002] In the field of video transmission and interface, with the continuous development of science and technology, in recent years, the transmission mode represented by digital signal has gradually become the protagonist of the times, such as HDMI, DVI, LVDS, etc., because digital signal has strong anti-interference ability It is more suitable for long-distance transmission in complex environments, but it takes a long time for digital signals to completely replace analog signals. In this transitional stage, many video devices still retain analog signal interfaces while using digital interfaces. In many regions and fields, the use of analog interfaces and the transmission of analog signals are still the mainstream application methods. Because of this, is it possible to find a vide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N5/04
Inventor 章圣焰詹于杭童歆刘小康
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST