Community antenna broadcast system having an improved channel selecting system permitting purchase of a selected channel from a plurality of non-purchased channels

Patent 5105268 Issued on April 14, 1992. Estimated Expiration Date:

June 10, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Broadcasting system
Patent #: 4751732
Issued on: 06/14/1988
Inventor: Kamitake

Subscription control for television programming
Patent #: 4797918
Issued on: 01/10/1989
Inventor: Lee , et al.

High security pay television system Patent #: 4807286
Issued on: 02/21/1989
Inventor: Wiedemer

Inventors

Assignee

Application

No. 711725 filed on 06/10/1991

US Classes:

725/6, Card reader (e.g., reader for credit, debit, or smart card)725/104Pay-per-view

Examiners

Primary: Eisenzopf, Reinhard J.
Assistant: Faile, Andrew

Attorney, Agent or Firm

Armstrong, Nikaido, Marmelstein, Kobovcik & Murray

Foreign Patent References

250791 JP. 12/24/1985

International Classes

H04N 007/10
H04H 001/02

Foreign Application Priority Data

1988-11-08 JP

Abstract

A community antenna broadcasting system comprises a transmitting center for broadcasting programs in physical channels, a transmission path, and one or a plurality of home terminals for receiving the programs broadcast from the transmitting center via the transmission path. The transmitting center transmits a main information which includes video and audio information for each of physical channels, and also transmits a control information which includes numbers of logical channels which are contents of the physical channels. The home terminal enters a supervision information which includes a number of a desired logical channel which corresponds to a desired program, and produces a channel selection instruction by collating the control information and the supervision information. A channel selection part is provided within the home terminal. The channel selection part receives the information via the transmission path and selects a physical channel in response to the channel selection instruction.