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Picture-in-picture television receiver control

  • US 4,959,719 A
  • Filed: 12/21/1988
  • Issued: 09/25/1990
  • Est. Priority Date: 12/21/1988
  • Status: Expired due to Term
First Claim
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1. In combination with a picture-in-picture television receiver including a display means with a screen capable of displaying a main picture and at least one picture-in-picture, a plurality of sources of information for display as said main picture and said at least one picture-in-picture, a single manually operable control means for switching said main picture from one of said sources of information which it is capable of displaying to another such source and for switching said at least one picture-in-picture from one of said sources of information which it is capable of displaying to another such source, selection means for selecting whether said control means switches said main picture or said predetermined one of said at least one picture-in-picture between sources of information in response to manual operation and an indicating means generator responsive to said selection means causing said display means to display on said screen indicating means indicating which of said pictures said control means will switch between sources of information upon manual operation to cause such switching.

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