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:
Oct. 10, 1989
Filed:
Jun. 21, 1988
Applicant:
Inventors:
Takashi Furuhata, Yokohama, JP;
Hitoaki Owashi, Katsuta, JP;
Takayasu Ito, Yokohama, JP;
Masakazu Hamaguchi, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358310 ; 358335 ; 360-91 ;
Abstract
Disclosed is a magnetic recording-playback apparatus suitable for recording and reproducing a signal including a broad-band composite video signal and a method therefor. The broad-band signal is time-sliced into signals in two channels, and each divided signal is expanded on the time axis so that it is converted into a lower-band signal before being recorded on a magnetic tape. In the time axis expansion process, the vertical blanking signal and/or horizontal blanking signal is not expanded, whereby the divided video signals have a still lower frequency band.