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AssigneeRicoh Watch Co., Ltd.
InventorsNobuo Tohyama, Junichi Yoshida, Shozo Yamano, Kenji Kamiya
Estimating the term…
An electronic watch including a watch circuit and display is provided which additionally includes an automatic time indication modifier. The modifier comprises a receiver, a filter for passing only that component of the signal from the receiver which has the same frequency as a time announcement signal, a pulse height discriminator for converting an output signal of the filter into a bi-level signal in accordance with the magnitude of the output signal above a threshold level, a time announcement pattern discrimination circuit responsive to the bi-level signal from the discriminator to determine the presence of a time announcement pattern on the basis of the duration of and the time interval between the bi-level signals, and a "seconds" indication modifying and control circuit for modifying a "seconds" indication of the watch in response to an output signal from the discrimination circuit.
An electronic watch including a watch circuit and a display, the watch circuit including a clock generator, a frequency divider coupled to said clock generator, and means coupling said display to said frequency divider, the watch being provided with an automatic time indication modifier which comprises:
An electronic watch comprising:
An electronic watch comprising:
A method of correcting the time displayed by an electronic timepiece, said timepiece having a clock generator, a frequency divider coupled to said clock generator, a display device for displaying the time being kept by the timepiece, and a control and display drive circuit for controlling the time displayed at said display device in response to said frequency divider and to an externally received time announcement signal, said method comprising the steps of:
Dependencies are inferred from the claim text.