Method and circuit for comparing the timekeeping state and contents of a register in an electronic reminder giving timepiece
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United States of America Patent
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Apr 24, 1984
Grant Date -
N/A
app pub date -
Oct 21, 1981
filing date -
Oct 21, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
For an electronic timepiece arranged and adapted to give reminders there isrovided a method for comparing a timekeeping state (1) with the contents of a register (2), a circuit (3) for applying the method and a utilization of such circuit. A programmable register (2) releases a signal whenever the contents of at least one counter (1) coincide with the contents of a portion of the register (2). In another portion of the register (2) is programmed the code of a state (-) which corresponding counters (1) will never attain under normal operations and the comparison (3) between the state of these counters (1) and that of said other portion of the register (2) is validated whatever may be the state. The comparison circuit (3) may be obtained from the arithmetic and logic units of a microprocessor as employed in a reminder giving timepiece.
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