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Apparatus and method for controlling television receiver

  • US 5,408,275 A
  • Filed: 05/24/1993
  • Issued: 04/18/1995
  • Est. Priority Date: 05/25/1992
  • Status: Expired due to Term
First Claim
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1. A method for controlling a television receiver comprising the steps of:

  • (a) checking whether an input signal is a rotary encoder signal outputted from a rotary encoder;

    (b) when said input signal is a rotary encoder signal, checking whether said input signal is an increase signal or a decrease signal and operating the television in accordance with said rotary encoder signal; and

    (c) when said input signal is not a rotary encoder signal, checking whether said input signal is a key signal, and, when said input signal is a key signal, operating the television in accordance with the corresponding key signal;

    wherein step (b) further includes the sub steps of;

    when a first input signal has been applied from said rotary encoder, reading a second input signal applied from said rotary encoder to a second interrupt terminal and when said second input signal is a high signal, setting an increase flag, and when said second input signal is a low signal, checking whether a decrease flag has been set and,when said decrease flag has been set, resetting said decrease flag and recognizing said second input signal as a decrease direction signal;

    when said decrease flag has not been set, recognizing said second input signal as an erroneous signal;

    and wherein, when said second input signal has been applied from said rotary encoder, reading said first input signal applied from said rotary encoder to a first interrupt terminal and checking whether said first input signal is a high signal or a low signal; and

    when said first input signal is a high signal, setting said decrease flag; and

    when said first input signal is a low signal, checking whether said increase flag has been set and,when said increase flag has been set, recognizing said first input signal as an increase directional signal, andwhen said increase flag has not been set, recognizing said first input signal as an erroneous signal.

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