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:
Dec. 16, 1997
Filed:
Feb. 17, 1995
Kouji Kaniwa, Yokohama, JP;
Hideo Nishijima, Katsuta, JP;
Nobutaka Amada, Yokohama, JP;
Hiroo Okamoto, Yokohama, JP;
Takaharu Noguchi, Yokohama, JP;
Hiroaki Ono, Fujisawa, JP;
Hitoaki Owashi, Yokohama, JP;
Takao Arai, Yokohama, JP;
Hiroya Abe, Hiratsuka, JP;
Kouji Minabe, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An information recording and reproduction apparatus for recording and reproducing the information supplied through the transmission line is capable of protecting the copyright by limiting the reproduction of the recorded information. A main information signal supplied through the transmission line and a deadline signal attached to the main information signal and representing the reproduction deadline of the main information signal are recorded and reproduced by a recording device and a reproduction device respectively. A temporal information signal representing the date and time is acquired. The deadline signal reproduced is compared with the temporal information signal acquired. The reproduction output of the main information signal is cut off in accordance with the comparison signal produced by the comparison. In the case where the temporal information has passed the deadline, the reproduction output of the main information signal is cut off.