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Information signal recording disc recorded with an end signal for selectively preventing unwanted access to predetermined recorded information and disc reproducing apparatus therefor

  • US 4,695,904 A
  • Filed: 04/29/1985
  • Issued: 09/22/1987
  • Est. Priority Date: 05/01/1984
  • Status: Expired due to Fees
First Claim
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1. An information signal recording disc playable on a disc reproducing apparatus which comprises a reproducing element for reproducing recorded signals from track turns of the information signal recording disc, said reproducing element reproducing the recorded signals from the track turns of the information signal recording disc in a playing position and stopping the reproduction in a rest position, said information signal recording disc comprising:

  • a first region comprising track turns recorded with an information signal at least including a video signal;

    a second region comprising track turns intermittently recorded with an end signal, said end signal being used to forcibly and automatically return the reproducing element of the disc reproducing apparatus from the playing position to the rest position, said second region being provided at a position prior to said first region in a direction of a reproducing sequence of the recorded signals on the information signal recording disc; and

    a third region made up of at least one track turn, said third region being provided at a position subsequent to a position where the recording of the information signal terminates in the direction of the reproducing sequence of the recorded signals on the information signal recording disc,said track turns being recorded with an address signal with a constant period, said address signal indicating the position on the information signal recording disc,said end signal being recorded in place of said address signal in predetermined track turns within said second region,said end signal being recorded in place of said address signal in all track turns within said third region.

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