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. 27, 1994
Filed:
May. 10, 1993
David J Brown, Ringwood, GB;
David C Conway-Jones, Winchester, GB;
Jong-Han Kim, Morden, GB;
Peter M Smith, Winchester, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Signal processing apparatus comprises a chrominance subsampler (10) for sampling the U and V components of a video signal in response to an enable signal. A counter (30) responsive to the horizontal synchronization component of the video signal generates the enable signal upon detection of a predetermined number of horizontal synchronization pulses. Logic (60,70,80) responsive to the vertical synchronization component of the video signal resets and disables the counter (30) upon detection of a vertical synchronization pulse. Logic (50,60,70,80) restarts the counter (30) from a reset state upon detection of a predetermined polarity in the V component of the video signal.