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Video signal conversion method for realizing conversion of VGA (Video Graphics Array)/YPbPr signal into HDMI (High-Definition Multimedia Interface) signal through single chip

A conversion method and video signal technology, applied in the direction of video signal spatial resolution conversion, standard conversion, etc., can solve the problems of not being able to adapt to the market demand, occupying the space of the integrated circuit board, and high system cost, so as to meet the application requirements, The effect of saving system cost and high adoption accuracy

Inactive Publication Date: 2016-05-25
宏晶微电子科技股份有限公司
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Problems solved by technology

Therefore, the cost of the system is high, and it takes up space on the integrated circuit board, which cannot well meet the market demand for smaller and smaller consumer electronics products.

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  • Video signal conversion method for realizing conversion of VGA (Video Graphics Array)/YPbPr signal into HDMI (High-Definition Multimedia Interface) signal through single chip
  • Video signal conversion method for realizing conversion of VGA (Video Graphics Array)/YPbPr signal into HDMI (High-Definition Multimedia Interface) signal through single chip
  • Video signal conversion method for realizing conversion of VGA (Video Graphics Array)/YPbPr signal into HDMI (High-Definition Multimedia Interface) signal through single chip

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[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] refer to figure 1 At present, the realization of the conversion from VGA / YPbPr signal to HDMI signal on the market includes the following steps: the analog data acquisition chip receives the VGA signal, and converts the VGA signal into RGB888 through analog-to-digital conversion (by 24 data lines and line synchronization, Field synchronization) is transmitted to the HDMI transmitter chip, and then the HDMI transmitter chip sends the HDMI signal;

[0019] refer to figure 2 , the method of the present invention can receive VGA signals, convert the VGA signals at the same time, and directly transmit the sig...

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Abstract

The invention discloses a video signal conversion method for implementing a function of converting a VGA (Video Graphics Array) / YPbPr signal into an HDMI (High-Definition Multimedia Interface) signal through a single chip. The method has the advantages of relatively high compatibility, lower product cost and capability ofmeeting current market demands. The method comprises the following implementation steps: S1, converting an incoming VGA signal into a 24-bit RGB digital signal or a 24-bit YUV digital signal, a line synchronization signal and a field synchronization signal through a three-path 10-bit analog signal sampling module; S2, inputting the converted signals into a video processing module to perform color, brightness, saturation and chrominance adjustment, and finally inputting the adjusted signals into an HDMI signal transmission module to be encoded into HDMI signals in order to perform video output; and S3, reading specific information such as a model of HDMI receiving equipment and an optimal resolution by the HDMI signal transmission module through a wire rod according to the requirement of an HDMI protocol, and outputting a video format satisfying the HDMI receiving equipment.

Description

technical field [0001] The invention relates to a video signal conversion method for converting a VGA / YPbPr signal to an HDMI signal, in particular to a video signal conversion method for realizing a VGA / YPbPr signal to an HDMI signal with a single chip. Background technique [0002] At present, the conversion scheme of VGA / YPbPr signal to HDMI signal on the market needs two chips to complete, that is, the analog data acquisition chip and the HDMI transmitter chip. Therefore, the cost of the system is relatively high, and the space of the integrated circuit board is occupied, which cannot well meet the market demand for smaller and smaller volumes of consumer electronic products. [0003] The video signal conversion method of the present invention, a single chip completes the function of converting VGA / YPbPr signals to high-definition digital HDMI signals, has high compatibility, and adapts to current market demands while reducing product costs. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01
CPCH04N7/0117
Inventor 周文浩刘伟刘江
Owner 宏晶微电子科技股份有限公司
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