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Transmission method adopting VGA interface

A technology of VGA interface and transmission method, applied in the direction of sound input/output, digital output to display equipment, cathode ray tube indicator, etc., can solve the problems of incompatibility with color difference signals, large interface space, occupation, etc., and achieve structure and The appearance design is convenient, the input interface is reduced, and the effect of cost reduction

Inactive Publication Date: 2008-09-24
SHANGHAI AVCON INFORMATION TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of method that adopts VGA interface to transmit RGB plus color difference to add audio signal, to overcome current VGA interface can only provide the transmission of standard VGA signal, can't be compatible with color difference signal (commonly used high-definition video signal transmission mode), In general, the standard color difference input terminal will occupy a large interface space, which is not conducive to the technical problem of miniaturization of settings

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  • Transmission method adopting VGA interface
  • Transmission method adopting VGA interface

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] A kind of transmission method that adopts VGA interface as shown in the accompanying drawing,

[0013] The invention relates to a transmission method using a VGA interface. While the video data pins of the VGA interface are used to transmit RGB signals, other pins are used to transmit color difference signals and audio signals.

[0014] figure 1 It is the circuit diagram of the video interface part, where:

[0015] J1: VGA15 pin interface female header;

[0016] U10: AD9880 chip;

[0017] FB1, FB2, FB3, FB4, FB5: high-frequency magnetic beads;

[0018] R1, R2, R3: matching resistors for video signal terminals;

[0019] C1, C2, C3, C4: signal DC blocking capacitors;

[0020] R7, R8: pull-up resistors for the I2C bus.

[0021] figure 2 It is a wiring diagram for component video signal conversion, in which:

[0022] J1: RCA lotus plug, use...

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Abstract

The invention relates to a transmission method by adopting VGA interface, in particular to a method of using VGA interface to transmit RGB plus color difference and audio signal, which is characterized in that when VGA port video data guide foot transmits RGB signal, the rest of guide feet transmit the color difference signal as well as the audio signal. The method has the beneficial effects that the device with VGA input signal can also achieve the transmission of color difference and audio signal through the method, reduce the number of input interfaces of the device, decrease the product cost and bring more convenience to product structure and appearance design.

Description

technical field [0001] The invention relates to the relevant technical field of video and audio transmission, in particular to a method for transmitting RGB plus color difference plus audio signals through a VGA interface. Background technique [0002] With the advent of the electronic information age and the popularization of electronic product applications, devices with VGA signal input are widely used. At present, the VGA interface can only provide standard VGA signal transmission, but cannot be compatible with component signal (commonly used high-definition video signal transmission method). In general, the standard color difference input terminal will occupy a large interface space, which is not conducive to the miniaturization of the configuration. Contents of the invention [0003] The purpose of the present invention is to provide a kind of method that adopts VGA interface to transmit RGB plus color difference to add audio signal, to overcome current VGA interface...

Claims

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Application Information

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IPC IPC(8): G06F3/14G06F3/16G09G5/00H04N9/64
Inventor 刘晓露赵建历
Owner SHANGHAI AVCON INFORMATION TECH