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:
Jun. 19, 1984
Filed:
Mar. 08, 1982
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A compression and expansion system for a composite video signal comprises an extracting circuit for judging maximum and minimum points in a video signal of a composite video signal, to extract these maximum and minimum points, a digital value obtaining circuit for obtaining digital values of levels of the extracted points and digital values of positions of the extracted points in the video signal, to record and reproduce or transmit these digital values thus obtained, a circuit for performing interpolation to connect a digital value of the level and position of the extracted point which is reproduced or transmitted with a digital value of the level and position of a point which is succeedingly extracted, in a substantially linear manner, in order to expand the video signal, and a circuit for mixing a composite synchronizing signal which is separately produced with the analog video signal, to obtain the original composite video signal.