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:
Jul. 19, 1977
Filed:
May. 27, 1975
Tadashi Nagaoka, Nishinomiya, JA;
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Abstract
A signal reproducing system particularly adapted to be used with a high frequency signal such as a video signal. In this system, a record medium formed with a guide groove having an uneven pattern formed on an inner wall thereof with projections of the uneven pattern being located at intervals corresponding to time-axis changes in a time-axis modulated signal is scanned by a scanning member. The record medium is pressed by the scanning member along the guide groove, the scanning member being supported by an essentially elastic material. A change in the inclination angle of the scanning member with respect to the record medium occurs when a portion of the tip end of the scanning member engages with or disengages from the projections. The change in inclination angle is detected by a mechanical-electrical transducing element arranged in contact with the scanning member as an electrical signal to produce a reproduced signal.