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Control of an image display based on a permission signal

  • US 5,862,300 A
  • Filed: 11/10/1997
  • Issued: 01/19/1999
  • Est. Priority Date: 07/07/1995
  • Status: Expired due to Fees
First Claim
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1. An encoder for encoding an image signal representing a plurality of images displayed in at least first and second predetermined modes, comprising:

  • a first coder for coding said image signal; and

    a second coder for coding an additional information signal representing additional information corresponding to said image signal, said additional information including a flag for prohibiting said images to be displayed in said first predetermined mode, and including a time period during which said flag is effective such that said images are displayed only in said second predetermined mode if said flag is effective.

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