Electronic alarm clock

Claim 1

An electronic timepiece having an analog display produced by timekeeping hands representing hours and minutes and a concurrent digital display operating in conjunction with a digital setting system for activating an alarm at a preset time, said timepiece comprising: A. a common high-frequency crystal-controlled time base; B. a frequency converter in the form of a binary frequency divider coupled to said time base to produce low-frequency timing pulses; C. a motor responsive to the timing pulses to drive said timekeeping hands on a scale of 12; D. an electro-optical display having at least four stations to provide readings of hours and minutes on a scale of 24; E. a settable electronic actuator responsive to the timing pulses to produce digital values for concurrently actuating the digital display to provide digital time indications in synchronism with the analog display provided by the hands; F. hour and minute setting switches operable to set the digital display to a selected wake-up alarm time; G. a microprocessor coupled to said digital display actuator and having associated therewith a data memory operatively coupled to said switches for storing the digital value of a selected alarm setting, said microprocessor comparing the changing digital values from said digital display actuator corresponding to existing time with the stored value to produce a representative output signal when these values are coincident; H. means responsive to said output signal to generate an alarm; and I. a synthesized sound memory for storing in digitized form different musical sounds related to the respective hours of the day which are stored in said data memory, said microprocessor when the digital values representing existing times are coincident with said stored hours extracting said digitized sounds from said sound memory and applying said digitized sounds to digital-to-analog converter to produce musical sounds which are reproduced.