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:
Mar. 23, 1999
Filed:
Nov. 14, 1997
Tadashi Ozue, Kanagawa, JP;
Joichi Daiba, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
In order to enable both reproduction of the azimuth-recorded old format and recording and reproduction of the new format of a different azimuth angle without increasing the number of heads, the number of channels of rotary transformers and the number of changeover switched, attached on a rotary drum are a head Hw1 and a head Hr1 (whose azimuth angle is -.THETA.) which are located in opposite positions apart by 180.degree., and a head Hw2 and a head Hr2 (whose azimuth angle is +.beta.) which are also located in opposite positions apart by 180.degree.. Another head Hr3 (whose azimuth angle is +.THETA.) is attached on the drum 3 in a position apart from the head Hr1 by 90.degree.. Recording of the narrow-track new format and RAW operation are done by the heads Hw1, Hw2, and reproduction of the new format is done by the heads Hr1, Hr2. Reproduction of a signal recorded in the old format is done by the heads Hr1 and Hr3.