Video frame processing method and video frame processing chip

Abstract

The embodiment of the present invention discloses a method for processing video frames, a video processing chip, and a motion estimation and motion compensation MEMC chip. The method for processing video frames includes: the video processing chip acquires a plurality of video frames; the video processing chip converts each The video frame is adjusted from the first resolution to the second resolution; the video processing chip inserts at least one invalid frame into the plurality of video frames according to the second frame rate so that it is composed of the plurality of video frames and the at least one invalid frame The frame rate of the transmission frame stream is the second frame rate; the transmission frame stream is sent to the MEMC chip. Since the video processing chip and the MEMC chip can transmit the frame stream according to the interface frequency corresponding to the agreed resolution and frame rate, when the resolution and the frame rate of the plurality of video frames acquired by the video processing chip change, There is no need to adjust the interface frequency between the video processing chip and the MEMC chip, which will not cause a black screen to appear on the display screen and improve the smoothness of playing video on the display screen.

Description

technical field [0001] The invention relates to multimedia technology, in particular to a method for processing video frames, a video processing chip and an MEMC chip. Background technique [0002] Existing terminal devices such as TVs and mobile phones, in order to improve the user experience of watching videos, usually use motion estimation and motion compensation (Motion Estimate and Motion Compensation, MEMC) technology to improve the fluency of video playback. The terminal devices generally include video processing Chips, MEMC chips and display screens, wherein the video processing chip is used to decode the received code stream to obtain video frames, and the MEMC chip is used to perform motion estimation and motion compensation on the received video frames to increase the frame rate of the video frames, The display screen is used to display the video frames received from the MEMC chip. [0003] Since the frame rate of the video frame acquired by the video processing ...

AI Technical Summary

Problems solved by technology

[0004] There is following technical problem in above-mentioned prior art: because the video frame that video processing chip obtains is original video frame, if the frame rate of original video frame or resolution change, then video processing chip transmits to the frame rate of the video frame of MEMC chip or The resolution will also change accordingly, because the corresponding relationship between the frame rate, resolution and interface frequency is agreed between the video processing chip and the MEMC chip, for example, when the resolution is Full High Definition (FHD), the frame rate When it is 30fps, the interface frequency between the video processing chip and MEMC is 74.25MHz; when the resolution is Ultra High Definition (UHD), and the frame rate is 60fps, the interface frequency between the video processing chip and MEMC is 297MHz, Therefore, when the frame rate or resolution of the video frame transmitted by the video processing chip to the MEMC chip changes, the interface frequency needs to be adjusted between the video processing chip and the MEMC chip, that is, the interface timing is adjusted, which will cause a short-lived display on the display screen. Black screen, reducing the smoothness of playing video on the display

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