Title: Bilateral communications system for distributing commerical and premium video signaling on an accountable basis

Abstract: A bilateral communications system, as for CATV application, distributes commercially available and premium video programming on a subscriber demand--directly accountable basis. At least the premium video programming is impressed on the cable in a frequency band and/or format not recoverable by a standard television receiver, absent receipt at a particular subscriber location of a reception-authorizing message from the system head end. A central processor at the system head end sequentially polls cable subscribers under stored program control, permitting bilateral digital communications between the subscriber and the head end.

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Inventors: Barnhart, Andrew Wayne (Dresher, PA, US)

Application Number: 409820
Filing Date: 1973-10-26
Publication_date: 1976-01-20
Assignee: Jerrold Electronics Corporation (Horsham, PA)
Primary Class(es): 725/131 725/28
Other Classes:
US Patent Ref:

3668307	Jun, 1972	Face et al.	178/5.
3733430	May, 1973	Thompson et al.	178/5.
3757225	Sep, 1973	Ulicki	178/5.
3777053	Dec, 1973	Wittig et al.	178/5.
3790700	Feb, 1974	Callais et al.	178/5.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Buczinski, S. C.
Attorney: Calimafde; John M.