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. 23, 2003
Filed:
Mar. 09, 2000
Yasuyuki Umehara, Tokorozawa, JP;
Tsutomu Takahashi, Tsurugashima, JP;
Pioneer Corporation, Tokyo-to, JP;
Abstract
An fade detection device detects fade transitions in a image data signal used for image data compression provided with: an inter-frame difference calculation device calculates the absolute value of the difference at each pixel between two frames, and the sum of the absolute values at all pixels of one frame; a pixel block detection device calculates the absolute value of the difference at each pixel between two pixel blocks, each of which is subdivided from one frame, and detecting a pair of blocks to obtain the minimum value for the sum total of the absolute values at all pixels of one block; an predictive difference calculation device calculates the one frame total of said sum total of the absolute values at all pixels of one block in each pair of blocks detected by said pixel block detection device; a judging device judges whether said fade transitions is generated or not, using said sum total of the absolute values at all pixels of one frame and the one frame total.