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:
Apr. 09, 2002
Filed:
May. 25, 1999
Seiji Matsumoto, Hamamatsu, JP;
Masamichi Furukawa, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A digital recording apparatus receives an analog signal containing picture and/or voice information, through an analog transmission line, and digitally records the analog signal. The analog signal is digitally recorded in a form containing electronic watermark information within a first portion of the analog signal containing the picture and/or voice information while adding copy control information indicating permission of free copying to a second portion of the analog signal not containing the picture and/or voice information when the detected electronic watermark information indicates permission of free copying. Digital recording of the analog signal is prohibited when the detected electronic watermark information indicates prohibition of copying, and the analog signal is digitally recorded with the copy control information indicating prohibition of subsequent recording added to the second portion of the analog signal when no electronic watermark information is detected. A digital recording apparatus is connected to a receiver system that receives a digital broadcasting wave signal containing picture and/or voice information, for digitally recording the received wave signal. The received wave signal is digitally recorded in a form containing electronic watermark information and copy control information, according to a determined copy restriction level when the electronic watermark information is detected in the received wave signal, and the received wave signal is digitally recorded in a form containing the copy control information, according to the copy restriction level when no electronic watermark information is detected.