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. 03, 1989
Filed:
Aug. 10, 1987
Applicant:
Inventor:
Jun Kobayashi, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
360 371 ; 360 331 ;
Abstract
A magnetic recording/reproducing apparatus, in which a video signal is recorded on and reproduced from a magnetic tape by helical scanning with a plurality of rotary magnetic heads, comprises a field memory storing a one-field portion of the video signal in accordance with an address signal, a circuit generating a control signal controlling memory read/write operations, a circuit generating a substituting signal substituting a predetermined period of the output signal of the field memory, and a circuit for setting the period of substitution, so that the substitution starting position is changed over in synchronism with the timing of starting the write operation.