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. 18, 1977
Filed:
Sep. 30, 1974
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
358141 ; 178D / ; 178 691 ; 328 63 ; 332 / ; 358148 ;
Abstract
A signal multiplexing method and system for transmitting a television signal by a narrow-band transmission medium incapable of transmitting d.c. components. In this method, a two-polarity pulse train signal consisting of pulses of alternately inverted polarities is subject to pulse modulation by the video information only of the television signal. The horizontal and vertical synchronizing signals indicative of the beginning of a line, field or the like are coded in such a form that some of the successive pulses in the pulse train signal have the same polarity.
Yumde, Yasufumi. (1977). Method and system for multiplexing signal for transmission (U.S. Patent No. 4004082). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4004082
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile