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Signal processing apparatus and methods

  • US RE47,968 E1
  • Filed: 11/08/2018
  • Issued: 04/28/2020
  • Est. Priority Date: 11/03/1981
  • Status: Active Grant
First Claim
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1. An apparatus for promoting and delivering digitally encoded programming at a television receiver station comprising:

  • a first receiver section for receiving a promotional television program at said television receiver station, said promotional television program promoting said digitally encoded programming, said digitally encoded programming being related to said promotional television program;

    a television display operatively connected to said television receiver station for displaying said promotional television program;

    aan instruction based processor operatively connected to said television receiver station for receiving a signal used to decrypt said digitally encoded programming using a particular decryption technique, said signal including information identifying said particular decryption technique, wherein said particular decryption technique is identified from a defined set of decryption techniques that comprise a plurality of decryption techniques available at said television receiver station, said signal received via electronic transmission and originated from a location geographically remote from said television receiver station, each said decryption technique for converting unintelligible digital information into machine readable, machine intelligible digital information, wherein said instruction based processor operating on said signal according to one or more instructions under control of operating instructions stored at said television receiver station, said television receiver station arranged for reprogramming said operating instructions by operatively connecting to a source located geographically remote from said television receiver station using a communication channel carrying only digitally encoded data during communication of operating instruction reprogramming information, and for receiving a television viewer response to said promotional television program;

    a second receiver section operatively connected to said instruction based processor for receiving said promotional television program in encrypted form; and

    a storage device operatively connected to said instruction based processor for storing said viewer response and said signal used to decrypt said digitally encoded programming using a particular decryption technique identified by said information included in said signal, said instruction based processor authorizing in response to said viewer response decryption and presentation of said digitally encoded programming related to said promotional television program.

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