Electronic timepiece with gain/loss adjustment

Claim 1

An electronic timepiece comprising: a timepiece circuit including means for generating clock pulses and means for controlling the operational state of the timepiece; and a control circuit connected to the timepiece circuit for controlling said operational state and including a counter responsive to said clock pulses to provide a digital output signal, a digital/analog converter converting said digital output signal into an analog output signal, a potentiometer adapted to provide an analog input signal, a comparator for comprising said analog output signal and said analog input signal and producing an output signal when said analog output signal and said analog input signal coincide with one another, said control circuit being responsive to said output signal from said comparator to stop the operation thereof whereafter said digital output signal is applied to said operational controlling means as a control signal by which the operational state of said timepiece circuit is controlled and said control circuit further includes switching means for controlling the operation of each of said potentiometer, said digital/analog converter and said comparator; wherein said control signal comprises a plurality of digital output signals, and said timepiece circuit generates a plurality of clock signals; a pulse width modulation circuit including coincidence detection circuit for detecting a coincidence between said plurality of digital output signals and said plurality of clock signals to generate a coincidence signal; and means for generating a pulse width modulated signal in response to said coincidence signal.