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Signal processor for a wide televison receiver

  • US 5,243,421 A
  • Filed: 10/07/1991
  • Issued: 09/07/1993
  • Est. Priority Date: 10/05/1990
  • Status: Expired due to Term
First Claim
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1. Signal processor for a wide television receiver comprising:

  • display means including a wide aspect ratio;

    a video signal processing circuit for producing a real scanning line signal and an interpolation scanning line signal from a video signal;

    a display format conversion memory circuit for converting a video signal from said video signal processing circuit into either one of display formats respectively for a display with horizontal compression, a display without horizontal compression, and a display with vertical magnification with each of the display formats having the wide aspect ratio to be presented on said display means;

    a sync reproducing circuit for reproducing a synchronizing signal included in the video signal and supplying the synchronizing signal to said vide signal processing circuit and to said display format conversion memory circuit for a synchronization of an operation storing the video signal to control a writing operation of the video signal to said display format conversion memory circuit;

    a fixed frequency generating circuit producing a fixed frequency control signal controlling a read operation of the video signal from said display format conversion memory circuit in response to the synchronizing signal from said sync reproducing circuit, and a synchronizing signal for a display operation of said display means; and

    a display format setting circuit for generating setting signals to execute a selection of a display format employed in the conversion in said display format conversion memory circuit and a selection of either one of the control signals outputted from said fixed frequency generating circuit.

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