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Programmable array logic (PAL) video signal generation device based on arbitrary waveform generator

A technology of arbitrary waveforms and video signals, applied in image signal generators, etc., can solve problems such as long design cycle, difficult debugging, and difficult upgrades, and achieve the effects of powerful functions, strong stability and flexibility, and easy scalability

Active Publication Date: 2014-09-10
GUANGZHOU HANGXIN AVIATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a PAL video signal generating device composed of hardware circuits is usually large in size, high in cost, difficult in upgrading, difficult in debugging, and long in its design cycle.

Method used

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  • Programmable array logic (PAL) video signal generation device based on arbitrary waveform generator
  • Programmable array logic (PAL) video signal generation device based on arbitrary waveform generator
  • Programmable array logic (PAL) video signal generation device based on arbitrary waveform generator

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Embodiment Construction

[0039] refer to figure 1 Shown, a kind of PAL video signal generation device based on arbitrary waveform generator of the present invention comprises: computer and arbitrary waveform generator, after described computer generates PAL video digital waveform signal, store in arbitrary waveform generator, arbitrary waveform generator Convert the stored PAL video digital waveform signal into PAL video analog waveform signal and output it.

[0040] The arbitrary waveform generator used in practice can be a desktop instrument or a modular instrument of various manufacturers, and its minimum configuration is a sampling rate of 20MS / s, a resolution of at least 8 bits, an output voltage range Vp-p of at least 1V, and internal buffering The area is at least 1.6M storage points.

[0041] Further, refer to figure 2 As shown, the arbitrary waveform generator includes:

[0042] The controller is used to control the PAL video digital waveform signal sent by the computer to be stored in th...

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PUM

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Abstract

The invention discloses a programmable array logic (PAL) video signal generation device based on an arbitrary waveform generator. The PAL video signal generation device comprises a computer and the arbitrary waveform generator, wherein the computer generates PAL video digital waveform signals which are stored in the arbitrary waveform generator, and the arbitrary waveform generator converts the stored PAL video digital waveform signals to PAL video simulation waveform signals and then outputs the PAL video simulation waveform signals. According to the PAL video signal generation device, red / blue / green (RBG) value of image pixels is obtained by aid of the computer image processing technology, luma and chroma (YUV) value of the pixels is obtained through conversion, PAL video signal waveform is formed by using the YUV value as input of the software algorithm, and PAL video signals are output through the arbitrary waveform generator. Compared with the existing PAL television signal encoder, the PAL video signal generation device is greatly reduced in volume, is easy to install and debug and low in cost, has generality, usability and extendibility, is strong in stability, flexibility and function, and can be applied to the fields of tests related to PAL signals.

Description

technical field [0001] The invention relates to a device combining software and hardware circuits, in particular to a PAL video signal generating device based on an arbitrary waveform generator. Background technique [0002] Today's PAL video signal generating devices are mainly composed of hardware circuits, such as FPGA (Programmable Gate Array) or dedicated encoding chips. The process of PAL video signal generating device to generate PAL video signal is: through the hardware circuit, the input RGB (Red, Green, Blue) color signal is converted into brightness signal and color difference signal, and the color difference signal is passed through the U and V balance amplitude modulator respectively. Then it is superimposed with the luminance signal, and at the same time superimposed with the synchronous signal, finally generating and outputting the PAL video signal. However, such a PAL video signal generating device composed of hardware circuits is usually bulky, high in cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04
Inventor 曾勇军陈波陈洪雨
Owner GUANGZHOU HANGXIN AVIATION TECH CO LTD
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