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:
Aug. 24, 1982
Filed:
Jan. 23, 1979
Yoshihiko Ota, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A reproducing apparatus reproduces a video signal of a certain system having a field frequency F1 and a number N1 of horizontal scanning lines within one field period which has been recorded on a magnetic tape travelling at a speed S1 along plurality tracks formed obliquely relative to the longitudinal direction of the tape and mutually parallel, converting the video signal to a video signal of another system having a field frequency F2 and a number N2 of horizontal scanning lines. The reproducing apparatus comprises a means for causing the tape to travel at a speed S2 which is represented by the equation S2=(F2/F1)S1, and a means for causing the rotary heads to trace each track on the travelling magnetic tape thereby utilizing a signal over tracing range of a length l2 substantially as a reproduced signal corresponding to unit field amount, the length l2 being represented by the equation l2=(N2/N1)l1, wherein l1 is the length of the recording track corresponding to unit field amount of the recorded signal on the magnetic tape.