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. 18, 1987
Filed:
Mar. 20, 1985
Akimori Tomizawa, Tokyo, JP;
Clarion Co., Ltd., Tokyo, JP;
Abstract
A pay television system generally comprises a signal generating center, signal distributers and subscriber devices. The center produces and combines a television signal and a control signal and supplies the combined signal to a common cable, and each distributer includes subscriber units which receive the television signal through a first filter and control units which receive the control signal through a second filter. Each control unit which receives a tuning signal from a subscriber controls a corresponding one of the subscriber units to supply the subscriber with the television signal responsively to the control signal and according to the corresponding subscription, and each subscriber device includes at least one tuner which transmits the tuning signal indicating a requested channel to the signal distributer and a television receiver which is supplied with the requested television signal via the tuner when it coincides with the television signal supplied from the signal distributer in reply to the tuning signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile