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Apparatus and method of transmitting broadcast program selection control signal and controlling selective viewing of broadcast program for video appliance

  • US 6,005,598 A
  • Filed: 11/25/1997
  • Issued: 12/21/1999
  • Est. Priority Date: 11/27/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling selective viewing of a broadcast program for a video appliance, comprising:

  • a receiving section for receiving a broadcast program signal through a receiving antenna;

    a control signal receiving section for receiving a broadcast program selection control signal simultaniously transmitted with the modulation broadcast program signal, the control signal representing a viewing-restriction grade;

    a determining section for determining viewing-restriction grades, the determining section including a coding section for qualifying a particular user to determine the viewing-restriction grades, and a viewing grade determining and releasing section for the user'"'"'s determining and releasing of the viewing-restriction grade;

    a discriminating section for discriminating the viewing-restriction grade of the received broadcast program by comparing the viewing-restriction grade of the received broadcast program with that determined by the determining section;

    a control section for determining whether admit the viewing of the received broadcast program in accordance with a discrimination result from the discriminating section;

    a video/audio output section for outputting the video and audio signals of the broadcast program under the control of the control section;

    wherein the program selection control signal received through the control signal receiving section is a multi-step signal which is composed of a plurality of control signals which are combined in accordance with the viewing-restriction grades of the broadcast program; and

    wherein said pluralty of control signals forming said multi-step signal include first, second, and third control signals that are combined in hierarchical manner according to view restriction grade such that;

    only said first signal is appended when viewing is permitted for a first restriction grade;

    said first and second signals are appended when viewing is permitted for a second restriction grade; and

    all of said first second, and third signals are appended when viewing is permitted for a third restriction grade.

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