Wristwatch setting system
AssigneeTime Computer, Inc.
InventorsDonald W. Garrison, James T. Hartman
Life of this patent
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Abstract
A multi-function LED wristwatch in which all the required functions may be performed with the use of only two push button switches. These switches are time demand for displaying hours, minutes and seconds and date demand for alternatively displaying day of month, month of year, AM or PM of time, and day of week. They also perform all the setting functions for these displays and through sequential button depression and digital logic circuits, five of the functions, namely hours, minutes, day of the month, month of the year, and day of the week may be set independently.
Claims20
A solid state wristwatch comprising a source of substantially constant frequency electrical signals, a divider coupled to said source for reducing the frequency of the electrical signals, a display actuator coupled to said divider for producing both time and date electrical signals, an active digital display coupled to said actuator, a manually operated time demand switch in said watch for coupling time information from said actuator to said display, a manually operated date demand switch in said watch for coupling date information from said actuator to said display, a source of setting signals in said watch, and means responsive to multiple actuations of at least one of said switches within a predetermined time period for coupling said source of setting signals to said display.
A solid state wristwatch comprising a quartz crystal oscillator acting as a substantially constant frequency time base, a frequency divider coupled to said time base for reducing the frequency of the electrical signals, a display actuator coupled to said divider for producing both time and date electrical signals, a light emitting diode digital display coupled to said actuator, a push button time demand switch on said watch for coupling time information from said actuator to said display, a push button date demand switch on said watch for coupling date information from said actuator to said display, means coupled to said frequency divider for developing a source of display setting signals, a conditioning circuit for coupling said setting source to said display when one of said buttons is depressed and held down, said conditioning circuit normally blocking said setting source from said display but being convertable into a setting mode for transmitting setting signals from said setting source to said display in response to multiple depressions of one of said push buttons within a predetermined time interval.
Dependencies are inferred from the claim text.