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Teletext system having user prompt commands

  • US 4,556,904 A
  • Filed: 03/04/1983
  • Issued: 12/03/1985
  • Est. Priority Date: 03/04/1983
  • Status: Expired due to Term
First Claim
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1. A teletext receiver for receiving teletext signals and for allowing ready use of a remote control having arbitrarily designated symbol keys, comprising:

  • teletext signal receiving means for receiving coded teletext signals;

    first memory means coupled to said teletext signal receiving means for storing in coded form signals representative of prompting and non-prompting symbols to be displayed;

    detector means coupled to said first memory means for generating a control signal that is indicative of the presence of a prompting signal to be displayed;

    controllable code conversion means coupled to said detector means for converting said coded signals representative of prompting symbols to be displayed into coded signals representative of other symbols under the control of said control signal and for passing unchanged those coded signals representative of non-prompting symbols, said other symbols being symbols identifying the symbol keys of the remote control with which the receiver is associated;

    coded-symbol-to-pixel conversion means coupled to said controllable code conversion means for receiving said coded signals to be displayed and for generating pixel intensity information therefrom;

    second memory means coupled to said coded-symbol-to-pixel conversion means for storing said pixel intensity information; and

    display means coupled to said second memory means for displaying said non-prompting symbols and said converted prompting symbols corresponding with said other symbols identifying said symbol keys of said remote control.

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