JPS62158390U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure shows a time chart when the second correction switch is operated when the decoder setting value is within the value, and Figure 3 shows the time chart when the second correction switch is operated when the decoder setting value is outside the decoder setting value.
Figure 4 is a time chart when the minute counter is in the down count state and the minute display is corrected.Figure 4 is a time chart when the minute counter is in the up count state and the minute display is corrected by operating the second correction switch when the decoder setting value is outside. A time chart for when doing this. 12... Oscillator, 14... Frequency dividing circuit, 16...
Second counter, 20... Minute counter, 24... Hour counter, 28... Main circuit, 30... Modifiable switch, 32... Second correction switch, 34... Minute correction switch, 40... First AND circuit, 42...
...Second...Second AND circuit, 44...Third AND circuit, 46...Inverter, 52...Leading error discrimination circuit, 58...First flip-flop, 60...
...First pulse counter, 62...Down designation circuit, 66...Second flip-flop, 70...Count direction switching circuit, 72...Second pulse counter, 76...Return circuit.

Claims (1)

[Claims for Utility Model Registration] An oscillator that outputs an output signal with a constant period, a frequency divider circuit that converts the output of the oscillator into another reference signal with a constant period, and a second circuit that counts the reference signal to form a time signal. An electronic watch comprising at least a counter, a minute counter, an hour counter, and a second correction switch for clearing the count value of the second counter, wherein the minute counter is configured using an up-down counter, and the minute counter is configured using an up-down counter. an advance determination circuit that outputs an advance error determination signal when the second correction switch is operated when the count value is within a preset range; The seconds correction switch is operated,
And, within a certain period of time after operating the seconds correction switch,
a down designation circuit that outputs a down designation signal when the minute correction switch is not operated; and a down designation circuit that normally maintains the up/down counter in an up counting state and outputs either the advance error determination signal or the down designation signal. a count direction switching circuit that outputs a count switching signal to turn the up-down counter into a down-counting state when the up-down counter is switched to the down-counting state; What is claimed is: 1. An electronic timepiece with backward correction function, comprising: a count direction return circuit that outputs a count direction return signal for returning the clock to an up-count state;