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Video frequency multiplication method

A frequency doubling and video technology, applied in the field of video frequency doubling, can solve the problems of poor real-time performance, high cost and low flexibility of video frequency doubling, and achieve the effect of reducing the use of logic resources

Active Publication Date: 2020-09-15
艾索信息股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the problems of poor real-time performance, high cost and low flexibility of existing video frequency multiplication

Method used

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Examples

Experimental program
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Embodiment approach 1

[0025] This embodiment discloses a method for frequency doubling of video, including the following steps:

[0026] Step 1, the video acquisition module collects the original video signal and performs clock domain conversion, and outputs the converted video data to the video frequency multiplication module with a clock of 200MHZ;

[0027] Step 2, the video frequency doubling module outputs the received video data to the video signal at a frame rate of 60HZ;

[0028] Step 3: The video output module receives the signal output by the video multiplier module, and then converts it into a standard VESA signal for output and display.

[0029] In the above steps, the specific process of step 1 is: FPGA collects the original video signal output by the video receiving chip according to the timing of the VESA standard interface, buffers the original video signal through a FIFO module and performs clock domain conversion, and outputs the data to the video with a 200MHZ clock Multiplier mo...

Embodiment approach 2

[0039] refer to figure 1 As shown, this embodiment discloses a video frequency multiplication method, including: a video acquisition module, a video frequency multiplication module, and a video output module, wherein,

[0040] The parameter configuration module completes the configuration of the HDMI receiver chip, video capture module, video frequency multiplier module, video display module, and HDMI transmitter chip according to the resolution requirements.

[0041] The HDMI receiving chip completes HDMI video reception and converts it into RGB24-bit video signal for FPGA acquisition.

[0042] The video acquisition module completes the acquisition of RGB24-bit data according to the detected video frame line and field synchronization signals.

[0043] The video frequency doubling module receives the image data of the video acquisition module, stores the image data into the memory area by frame, and then outputs the video signal at a fixed 60HZ frame rate.

[0044] The video...

Embodiment approach 3

[0052] On the basis of the solutions disclosed in Embodiments 1 and 2, this embodiment also has a video superimposition module between the video frequency doubling module and the video display module. Specifically, after the multi-channel video frequency doubling modules are respectively scaled by a video infinite zoom module, the video superimposition module completes the superposition according to the superimposition parameters, and the video superposition module sends the superimposed video to the video display module.

[0053] When the video superimposition module superimposes the image data of M channels, according to the configuration parameters of the parameter configuration module and the superposition coordinate points, two frames of image data of different channels are intercepted respectively, and then the current two frames of image data are superimposed.

[0054] Before the two frames of images are superimposed, the video overlay module first obtains the superimpos...

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PUM

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Abstract

The invention discloses a video frequency multiplication method. The video input interface chip receives an output by the computer host; the HDMI video signal is converted into a standard VESA time sequence signal; FPGA receives video pixel signal through a video acquisition module, the video pixel signal is cached by an FIFO and then is sent to a video frequency multiplication module. The video frequency multiplication module receives a video signal with any frame rate and then fixedly outputs a video frame signal at the frequency of 60HZ, and the video output module receives the video signaloutput by the video frequency multiplication module, converts the video signal into a standard VESA time sequence signal and outputs the standard VESA time sequence signal to the video output interface chip for output and display. The video frequency multiplication module is simple to use and can be used for a video processing system based on an FPGA.

Description

technical field [0001] The invention belongs to the field of video processing and relates to a video frequency doubling method. Background technique [0002] With the rapid development of video display terminal process technology and manufacturing technology, the resolution and frame rate of video display have been greatly improved, which means that the video display effect has been improved. However, the frame rate of some video sources is low, and the display effect is greatly reduced, and even some display terminal devices do not support the frame rate of the original video source. To solve this problem, the frame rate of the original video source needs to be multiplied. Contents of the invention [0003] The invention aims to solve the problems of poor real-time performance, high cost and low flexibility of existing video frequency doubling. [0004] The present invention proposes a kind of method of frequency doubling of video, and the concrete steps of this method a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/4402H04N7/01
CPCH04N21/440263H04N7/0117
Inventor 李锋林宋晓伟刘雄高国强
Owner 艾索信息股份有限公司
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