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:
Jan. 26, 1993
Filed:
Apr. 12, 1991
Applicant:
Inventors:
Robert C Antonio, San Carlos, CA (US);
Phillip P Bennett, Portola Valley, CA (US);
Mark R Andrews, Foster City, CA (US);
Assignee:
Abekas Video Systems, Inc., Redwood City, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 11 ; 358140 ; 358183 ; 358 22 ;
Abstract
A video sample rate converter for converting decoded SMPTE D2 interleaved component video to SMPTE D1 interleaved component video includes a single modified multi-tap finite impulse response ('FIR') digital filter which alternately functions as a data selector and two-point linear interpolator, and as a four-point polyphase interpolator. The FIR filter uses time variant switched filter coefficients and a selectively inhibited output clock signal.