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. 10, 1998
Filed:
Jun. 26, 1995
Sony Corporation, Tokyo, JP;
Abstract
A multi-system video signal demodulating apparatus includes at least a color signal processing unit and a color discriminating function for demodulating a component video signal from video signals of two or more different systems. The multi-system video signal demodulating apparatus includes a detector for detecting continuity between vertical synchronizing signals of the input video signals. The color discriminating function is executed when the detector detects a discontinuity between the vertical synchronizing signals. The continuity between the vertical synchronizing signals of the input video signals is detected. The color discriminating function is executed when a discontinuity between the vertical synchronizing signals is detected during continuity detection. A synchronizing signal of an input video signal is discriminated. A frequency of a color burst signal is discriminated based on a result of the synchronizing signal discrimination. The color burst discrimination is executed or stopped based on a result of the color burst discrimination. An amplitude of the color burst is discriminated based on a result of the synchronizing signal discrimination. A phase of the color burst is discriminated based on a result of the amplitude detection. A television system of the video signal is discriminated based on a result of the phase detection. An oscillation frequency of the crystal oscillator is discriminated based on a discriminated result of the television system discrimination.