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:
Feb. 25, 1997
Filed:
Apr. 04, 1995
Cecelia L Dopp, Austin, TX (US);
Charlene A Gebler, Vestal, NY (US);
Cesar A Gonzales, Katonah, NY (US);
Elliot N Linzer, Bronx, NY (US);
Agnes Y Ngai, Endwell, NY (US);
Prasoon Tiwari, Croton-on-Hudson, NY (US);
Eric Viscito, San Francisco, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and method for repeat field detection for use in rate conversion and video encoding of the type contemplated by the MPEG standards. Before encoding a frame, first field in the current frame is compared to the previously occurring field of the same parity. Next, a single number (the inter-field parameter) is generated, which is a measure of the difference between the two fields. If the inter-field parameter is below a threshold a signal is generated to indicate that the current field is a repeat of the previous field of the same parity. Otherwise, the signal is generated to indicate that the field is not a repeat of the previous field of the same parity (i.e. the field likely contains at least one small area of motion).