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. 02, 1994
Filed:
Sep. 08, 1993
Saburou Nakazato, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a recording aspect, an image signal is angle-modulated into a first frequency band. A second or third angle-modulated signal is formed by frequency-converting the first angle-modulated signal respectively into a second or a third frequency band on the basis of first or second reference signals generated in the apparatus. The thus formed angle-modulated signal is recorded. In the course of reproduction, the recorded one of the second or third angle-modulated signals is reproduced, frequency-converted on the basis of the first or second reference signals into the first frequency band to provide the first angle-modulated signal, and is then demodulated to restore the image signal.