G - Physics – 04 – C
Patent
G - Physics
04
C
58/0.2
G04C 17/00 (2006.01) G04C 3/00 (2006.01) G04G 13/02 (2006.01)
Patent
CA 1079531
ABSTRACT OF THE DISCLOSURE A digital alarm timepiece which selectively displays a standard time display and a remaining time display by switching action is characterized in than an alarm operates at a predetermined alarm setting time being set and the re- maining time is displayed even if the display is switched to the standard time display. In one form, a digital alarm timepiece comprises in combination: a time standard signal generating means for generating a repetitive time standard signal having a rate defining a unit of time: a time counting circuit connected to receive said time standard signal for counting the same and for developing a count representative of seconds, minutes and hours: a date counting circuit connected to said time counting circuit and responding to the count developed by said time counting circuit for developing a count representative of date: a timer counting circuit for storing therein a count cor- responding to minutes and hours remaining before an alarm time and connected to said time counting circuit for counting down the count corresponding to minutes and hours before the alarm time in response to advancing of the count stored in said time counting circuit with the passage of time: display means for cooperating with said counters to display dates, hours, minutes and seconds according to the respective counts stored in said counters: alarm means responsive to the count developed by said timer counting circuit for developing an alarm signal when the count developed by said timer count- ing circuit is counted down to zero: and selecting means for selectively applying the count of said time counting circuit and said timer counting circuit to said display means for respectively displaying present time and time remaining to alarm in order to operate the timepiece in either a normal timekeeping mode or a timer mode.
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