The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2024
Filed:
Mar. 20, 2023
Lapis Technology Co., Ltd., Yokohama, JP;
LAPIS TECHNOLOGY CO., LTD., Yokohama, JP;
Abstract
A video signal processing device includes a selection/output unit that receives a video signal, sequentially selects and outputs a sequence of image data pieces of split image regions, a CRC calculation circuit that executes CRC calculation on a sequence of pixel data pieces outputted from the selection/output unit, a calculation result sorting unit that generates test values corresponding to the split image regions based on a CRC calculation result, a freeze determination unit that, based on the test values corresponding to one frame and the test values corresponding to another frame, determines whether a change has occurred in the video of the split image regions between the frames, and a video freeze detection unit that, by determining whether or not a state where no change has occurred in the video is continuing over a prescribed number of frame periods, detects whether or not the video is frozen.