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Electronic clock with alarm and method for setting alarm time

  • US 5,559,762 A
  • Filed: 06/06/1995
  • Issued: 09/24/1996
  • Est. Priority Date: 06/22/1994
  • Status: Expired due to Term
First Claim
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1. An electronic clock with an alarm, comprising:

  • a clock timing circuit counting a basic time;

    an alarm time setting circuit operable to set an alarm time;

    an alarm time storing circuit, operatively coupled to said alarm time setting circuit, storing said alarm time;

    an alarm coincidence detecting circuit operatively coupled to said clock timing circuit and said alarm time storing circuit, detecting the coincidence between said basic time and the alarm time stored in said alarm timing storing circuit;

    an alarm sounding circuit;

    an alarm setting/resetting circuit, operatively coupled to said alarm time setting circuit, said alarm coincidence detecting circuit to be in a set state when said alarm coincidence detecting circuit detects that said basic time and said alarm time do not coincide with each other, and to be in a reset state when said alarm coincidence detecting circuit detects coincidence between said basic time and said alarm time, said alarm time setting circuit is in operation, and said alarm sounding circuit is actuated after setting, to store said basic time in said alarm time storing circuit;

    an alarm sounding control circuit, operatively coupled to said alarm setting/resetting circuit and alarm sounding circuit, actuating said alarm sounding circuit to sound said alarm after said alarm setting/resetting circuit is set and said alarm coincidence detecting circuit detects the coincidence between said basic time and said alarm time.

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