PROCESS AND APPARATUS FOR THE SELECTIVE TRANSMISSION OF IMAGES BY TELEVISION SET

• US 3,597,692 A
• Filed: 02/10/1969
• Issued: 08/03/1971
• Est. Priority Date: 11/29/1968
• Status: Expired due to Term

• Current Assignee: Fannoy Pierre
• Original Assignee: Fannoy Pierre
• Inventors: FANNOY PIERRE
• Application Number:
  US04/797,838
• Time in Patent Office: 904 Days
• US Class Current: 725/87
• CPC Class Codes: H04N 7/16 Analogue secrecy systems; Analogue subscription systems
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

Process and apparatus for the selective transmission of images by ordinary commercial television set, characterized in that it substantially comprises recording program carriers; also recording on said program carriers at least one track for code signals; combining with said program carriers, means for selecting them, running and rewinding them respectively; interpolating between said program carriers and each commercial television receiver; a converter-selector operable by the interested person; coordinating said program carriers and said converter-selectors such that after transmission said program carriers are returned to the ready position and that in addition, in the event that a program selected by the interested person is not free, said person receives an occupied signal.

Claims

1. A system for automatically and selectively starting from any one of a plurality of substations the emission of any of a plurality of television programs in a transmission station, said system including a cable connection between the transmitting station and the substations, each substation including a television set coupled to said cable connection, means generating selecting signals for said television programs, and means transmitting said selecting signals to said transmitting station, said transmitting means being coupled to said cable connection and being controlled by said generating means, the transmitting station including a plurality of sources of said television programs, each of said sources being a program carrier having at least one control track recorded thereon, said control track controlling said transmitting means to stop the transmission of a program, to return a selected program carrier to its rest position and to send a signal to said substation in case a selected program carrier is not available, means coupled to said cable connection for transmitting the programs of said sources to said substations through said cable connection, means coupled with said cable connection for receiving said selecting signals from said substations and for accordingly controlling corresponding television program sources, transmitting means for the programs of these sources, a transmission channel mixer and a cable-distributing box wherein said transmitting means of said transmitting station are coupled to said cable connection through said transmission channel mixer and Said cable distribution box, and wherein said transmitting means of said substation includes a modulator for modulating a carrier wave by said selecting signals, means coupled with said modulator, a free channel selector, and a cable distribution box which is coupled in series with said free channel selector between said cable connection, said television receiver and said modulator.

2. A system in accordance with claim 1, wherein the program carriers consist of magnetic tapes.

3. A system in accordance with claim 1, wherein said program carriers are divided into groups.

4. A system in accordance with claim 3, wherein said television sets are subordinated to one or several of said groups to the exclusion of other group or groups.

5. A system in accordance with claim 4, wherein in case of a plurality of groups said selecting signal generating means are adapted to make a preselection of one group followed by a specific selection of the desired program carrier from the preselected group.

6. A system in accordance with claim 4, wherein in case of a single group said selecting signal generating means are adapted to select a program carrier of said group in one selecting operation.