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NTSC high resolution television converting apparatus for converting television signals of an NTSC system into high resolution television signals

  • US 5,134,479 A
  • Filed: 02/11/1991
  • Issued: 07/28/1992
  • Est. Priority Date: 02/16/1990
  • Status: Expired due to Fees
First Claim
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1. An NTSC high resolution television converting apparatus for converting a video signal based on an NTSC system into a video signal of a high resolution television system in order to display said video signal based on the NTSC system onto a high resolution monitor television receiver having a different aspect ratio, said apparatus comprising:

  • signal processing means for converting said video signal based on said NTSC system into a video signal for an EDTV;

    time-base compression processing means for signalcompressing a video display period of an output signal of said signal processing means in a signal compression ratio of 910/m times in a horizontal direction, where said m is an integer in which the signal compression ratio n is within ±

    2% with respect to a signal compression ratio n0 when m=1237 is set as a reference value; and

    signal switching means for switching between an output signal of said time-base compression processing means and a side level signal to be entered in a blank space produced when a time-base is compressed, to supply the switched signal as an output.

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