An electronic watch including a means to establish a time standard, a means to provide a frequency source from the time standard, a means to divide the frequency source into pulses representing seconds, minutes, hours, days, day of the week, months and years, means to display information visually and a means to drive the display including a control for activating said means to display and setting means to program said means to divide the frequency source.
An electronic timepiece includes circuit means by which the date counter thereof is automatically set to 28 days for February, and alternately, simply settable to 29 days for February occurring during a leap year.
An electronic timepiece includes a shutdown latch circuit. The latch circuit is initially set by insertion of a battery power source in the electronic timepiece. When the latch circuit is set, all other circuits in the timepiece, and particularly the display circuits, are turned off to conserve battery power during the "shelf-life" of the electronic timepiece. When the command switch is first activated, the latch circuit is reset, and all of the other electronic circuits are turned on in a predetermined initialized condition.
An arrangement for correcting an electronic timepiece comprises a normally reset flip-flop that holds, when set, a "second" counter in a reset state. When a first switch is closed after being released, the timepiece cyclically gives a normal, a "minute," and an "hour" indication. While a "minute" indication is given, a second switch is closed to set the flip-flop and advance a "minute" counter. When the second switch is released after the "minute" indication is advanced to a correct time, the "second" and "minute" counter are kept still. When the first switch is closed at the correct time after being preliminarily released, the flip-flop is reset to restart the watch with correct "minute" and "second" indications. The arrangement enables the correction to be carried out once again. While given, an "hour" indication is corrected by the second switch. If desired, correction of the "minute" and "second" indications and/or the "hour" indication may be omitted and a "day" or a longer-unit indication may be corrected by the second switch.
A display device for use in a transceiver and the like having a display section which normally performs digital time display and, as occasion demands, performs channel display by the aid of a change-over switch.
A digital electronic timepiece has numeric display means for selectively displaying the time and a number representing the day of the week. In one position of a display selection switch, the display means displays hours and minutes. In another position of the display selection switch, the date and a number representing the day of the week are displayed by the same display elements as those displaying time. Display indicators controlled by the display selection switch indicate what is displayed by the display means.
