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:
Jun. 28, 1983
Filed:
Apr. 17, 1981
Mitsunobu Furumoto, Yao, JP;
Osahiko Yano, Ibaraki, JP;
Hiroshi Taniguchi, Hirakata, JP;
Kanji Kubo, Katano, JP;
Masamitsu Ohtsu, Kadoma, JP;
Matsushita Electric Industrial Co. Ltd., Osaka, JP;
Abstract
A two speed or multi-speed video tape recorder of the conventional helical scan type in which the audio signal is capable of being recorded as a time compressed signal at one end of each helical video scan, or alternatively, in conventional longitudinal fashion by means of a stationary magnetic head engaging one edge of the tape. At low tape transport speeds, improved bandwidth (and therefore sound fidelity) is obtained by use of the time compression technique; while at higher transport speeds, there are advantages in utilizing the stationary audio head. Circuitry is provided to automatically utilize the time compression technique at lower tape transport speeds and the stationary head longitudinal recording technique at higher tape transport speeds. A pilot or cue signal is recorded on the tape, to automatically control the reproduction circuitry so that both types of recording methods can be interchanged on the same magnetic tape, with the reproducing circuitry switching accordingly between the two modes, as required.