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Receiver for receiving both HDTV and NTSC and method for selecting received signals

  • US 6,108,044 A
  • Filed: 04/10/1998
  • Issued: 08/22/2000
  • Est. Priority Date: 04/10/1997
  • Status: Expired due to Term
First Claim
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1. A receiver comprising:

  • a tuner which receives a high-definition signal having a digital format and a normal signal having an analog format;

    a first demodulator which demodulates said high-definition signal output by said tuner and outputs a demodulated high-definition signal;

    a detector which detects whether said normal signal exists in said demodulated high-definition signal to generate a detection signal, and which removes said normal signal;

    a first signal processor which processes said high-definition signal output by said detector and restores said high-definition signal to an image signal, which is output as a high-definition image signal;

    a second demodulator which demodulates said normal signal output from said tuner and outputs a demodulated normal signal;

    a second signal processor which processes said demodulated normal signal and outputs a normal image signal;

    a controller which receives said detection signal, as well as a broadcasting mode signal input by a user and a channel mode signal input by a user, and generates a selection signal; and

    a selector which outputs either said high-definition image signal or said normal image signal according to said selection signal.

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