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:
Dec. 21, 1993
Filed:
Jun. 12, 1991
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 11 ; 358 12 ;
Abstract
The system is made up of signal conversion unit for converting a video signal into two-line sum signal and difference signal for every two lines, time base conversion unit for time base converting the signals so that the transmission band of the difference signal is lower than the transmission band of the sum signal, and signal multiplexing unit for time-sharing multiplexing a time base converted sum signal and a time base converted difference signal.
Naka, Kazutaka. (1993). Recording/reproducing apparatus employing sum and difference sequential (U.S. Patent No. 5272519). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5272519
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