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:
Nov. 26, 1991
Filed:
Mar. 27, 1990
Sony Corporation, Tokyo, JP;
Abstract
In a sampling rate converter, an input digital video signal has its sampling rate converted from a first sampling frequency to a second or different sampling frequency by oversampling the input digital video signal at a rate which is an integral multiple of the first sampling frequency so as to generate zero values between data of the input digital video signal, interpolating an output signal from the oversampled input digital video signal, decimating the interpolated output signal for generating therefrom a digital video signal having the desired second sampling frequency, and only then applying the digital video signal having the second sampling frequency to a low pass filter, preferably of the finite impulse response type, for eliminating therefrom an undesirable signal component which is due to the sample rate conversion and which appears between frequency bands of one-half of the first and second sampling frequencies, respectively.