JPS6373697U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the circuit configuration of a multifunctional digital watch according to an embodiment of the present invention, and FIG. 2 is a time chart. 2... Oscillator, 4... Frequency dividing circuit, 10... Second counter, 18... Time counter, 26... Additional function circuit, 3
2...Display switching circuit, 34...Decoder/driver,
36...Display section, 38...Second correction switch, 40,4
2... Time correction switch, 44... Mode changeover switch, 54... Ring counter for selection, 56... Second reset circuit, 62... Operation time detection circuit, 72... Time correction circuit, 78... Additional function correction circuit, 88... Clear circuit.

Claims (1)

[Claims for Utility Model Registration] An oscillator that generates a reference signal, a frequency divider circuit that divides the frequency of the reference signal from the oscillator, and a second circuit that inputs the output signal of the frequency divider circuit and counts the second digits of the time. Input the output signal of the counter and the second counter to set the time.
A time counter that counts minute digits, an additional function circuit that has functions other than time measurement, a mode changeover switch, and a mode changeover switch that counts the number of times the mode changeover switch is operated and outputs a different mode selection signal corresponding to the counted value. a ring counter for selection, each output signal of the time counter and the additional function circuit is input, and in response to the mode selection signal, either one of the time counter or the additional function circuit is input.
a display switching circuit that selects and outputs one output signal; a decoder/driver that converts the output signal from the display switching circuit into a display signal; a display section that displays the display signal from the decoder/driver; and a time display. a second correction switch for correcting the second digit of the time, a time correction switch for correcting digits other than the second digit of the time, and operation signals from the second correction switch and the time correction switch and from the selection ring counter. Upon receiving the mode selection signal for selecting the additional function circuit,
an additional function correction circuit that supplies a correction signal to the additional function circuit; and a second control circuit that resets the second counter and the frequency dividing circuit on the condition that there is an operation signal from the second correction switch and a mode selection signal that selects the time counter. a reset circuit, and a signal output from the second reset circuit and an output signal from the frequency divider circuit on the condition that there is an operation signal from the second correction switch and a mode selection signal for selecting the time counter. , an operation time detection circuit that starts counting and outputs a signal after counting for a certain period of time; and an operation time detection circuit that receives an output signal from the operation time detection circuit and an operation signal from the time correction switch and supplies a correction signal to the time counter. a time adjustment circuit; and a clearing circuit that clears the count value of the operation time detection circuit in response to the generation of the operation signal of the time adjustment switch on the condition that an output signal from the operation time detection circuit exists. A multi-functional digital watch that features: