JPS6148871B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic timepiece with a calendar, and particularly to a month/day correction method.

Conventionally, electronic watches with calendars do not automatically determine the end of the month when the month and date are adjusted. For example, in mobile mode, the date will be February 28th to March 1st, but if you correct the date, it will change to February 28th → February 29th → February 30th → February 31st → March 1st. I was doing it. That is, in the day correction state, 31
I was able to count up to the day, and I was able to correct the month and day without any relationship. However, when adjusting the date, it always counts up to the 31st, so the number of correction operations increases.
It was a hassle. Also, with electronic watches with calendars that always automatically determine the end of the month, there is no problem if the day is controlled by the displayed month when the date is adjusted, but there is a problem when adjusting the month. It comes out. For example, if January 30th is displayed and you try to correct the month to March 30th, when you advance one step it will be February 30th, so the automatic end-of-month determination circuit will not work. working, 3
The problem arises when the date falls on the 1st of the month and the day has to be corrected again.

The present invention is an improvement made in view of these points, and aims to provide a method that allows easy correction of the month and day and can be realized with a simple circuit configuration.

This will be explained in detail below using the drawings.

FIG. 1 is a block circuit diagram of an electronic circuit section of an electronic timepiece with a calendar. 1 is an oscillation circuit, a clock circuit 2 counts a time standard signal outputted from the oscillation circuit 1, and a display device 3 displays the time. A day counter circuit 4 counts the day count signal output from the clock circuit 2, and a month counter circuit 5 counts the day counter output to display the month and day. Further, the outputs of the day counter circuit 4 and the month counter circuit 5 are input to an automatic end-of-month determination circuit 6, which controls the day counter circuit 4. To correct the time, month, and date, a correction signal is generated in the control circuit 7 by operating the switch group 8, and the correction signal is sent to the clock circuit.
2. Day counter circuit 4 and month counter circuit 5,
Each entry is made and corrections are made.

FIG. 2 shows a circuit diagram of a day counter circuit, a month counter circuit, and a month-end automatic determination circuit, and the present invention will be explained in detail using FIG.

Reference numeral 9 is a signal output from the control circuit 7 for correcting the date described above, and is a signal for advancing the day counter circuit 4 by one step. 10 is a daily progress signal output from the clock circuit 2. Reference numeral 11 indicates a system reset signal for determining the initial state of the day counter circuit 4 and month counter circuit 5, and reference numeral 12 indicates a system reset signal for shifting the watch from the date/month correction state to the normal carrying state of the watch. switch group 8
This is a signal output from the control circuit 7 during the operation.

Reference numeral 16 denotes a second detection circuit for detecting the small month and February, and detects the small month and February based on the output of the month counter circuit 5. When nothing is output from the second detection circuit 16, it is said to be a large moon.
The signal detected by the second detection circuit is then input to the first detection circuit 14, which detects the day of the month.
The first detection circuit 14 detects non-existing months and days of large month, small month, and February based on the output of the day counter circuit 4 and the output of the second detection circuit 16, and inputs them to the day counter reset circuit 15. be done. The day counter reset circuit 15 resets the day counter circuit 4 to display "1st" when a non-existing month/day is detected and any of the signals 12, 9, and 10 is input. It operates so that the signal 1
When 2 or 10 is input and the day counter reset circuit 15 is activated, the month counter circuit 5 is
Outputs a carry signal.

To explain this using the gate group in FIG. 2, the date correction signal passes through nine gates 20 and 21 and is input to the gate 23 forming the flip-flip section, and the output gate 26 of the first detection circuit 14 is at the "H" level. Then, the day counter reset circuit 15 operates and resets the day counter circuit 4.

However, gate 2 forming the month carry signal generation part
4 has no input and is at the "L" level, so a carry signal to the month counter etc. is not output. On the other hand, when signal 10 is inputted, it passes through gates 20 and 21 and is inputted to gate 23 like signal 9, so day counter reset circuit 15 operates and resets day counter circuit 4, and at the same time, gate 24
Since the output gate 26 of the first detection circuit is at the "H" level, the "H" level is output from the gate 27.
A level signal is output, and a carry signal to the next stage month counter circuit 5 is output. Similarly to signal 10, signal 12 is also input to gate 24 and simultaneously input to gate 23.
Since it is also input to the date counter reset circuit 15
operates to reset the day counter circuit 4 and output a carry signal to the month counter circuit 5.

For example, when April 30th is displayed, when the date is corrected and the day is advanced by one step, signal 9 is input, the second detection circuit determines that it is a small month, and the first detection circuit A month/day without a small month is detected, the day counter reset circuit 15 is activated, and April 1st is displayed. When the day counter is advanced not by the day counter increment by the date correction but by the day increment signal 10 from the clock counter, the day counter circuit is reset and further inputted to the gate 24 and sent to the month counter circuit. Since a carry signal is output, May 1st will be displayed. Also, if you adjust the month when January 30th is displayed, signal 13 will change to gate 2.
5 and the month counter circuit 5 is incremented, but at that time, February 30th is displayed and detected as a non-existent month/day, but since the signal 13 is input only to the gate 25. Since the day counter reset circuit does not operate unless any of signals 9, 10, or 12 is input, February 30th is displayed. After this, when the switch is operated to change from the correction state to the normal carrying state, the signal 12 is input, the date counter reset circuit 15 is activated, and March 1st is displayed. To explain these, the signal 12 is input to the gate 23 and resets the day counter reset circuit 15.
is activated to reset the day counter 4, and since it is also input to the gate 24, it also outputs a carry signal to the month counter 5, resetting the day to the 1st and carrying the month to March. It will become.

As mentioned above, in the month/day correction using the circuit system of the present invention, when the day is being corrected, the end of the month is automatically judged, but when the month is being corrected, the end of the month is not automatically judged. -Easy to adjust the date. Also, regarding the circuit, the conventional month-end automatic judgment circuit,
It can be realized with almost the same configuration, and it is only necessary to use the signal explained above as the signal for activating the day counter reset circuit. has a great effect.

[Brief explanation of the drawing]

Fig. 1...A block circuit diagram of an electronic circuit section of an electronic watch with a calendar. Fig. 2...A circuit diagram of a day counter circuit, a month counter circuit, and an automatic end-of-month determination circuit. 1... Oscillation circuit, 2... Clock circuit, 3... Display device,
4...day counter circuit, 5...month counter circuit,
6... Month-end automatic determination circuit, 7... Control circuit, 8... Switch group, 14... First detection circuit, 15... Day counter reset circuit, 16... Second detection circuit.

Claims (1)

[Scope of Claims] 1 a. An oscillation circuit that outputs a time standard signal; b. A clock circuit that inputs the time standard signal from the oscillation circuit and counts time; c. A clock circuit that inputs the day count signal from the clock circuit. a day counter circuit that counts the days; d a month counter circuit that counts the months according to the output signal from the day counter circuit; and e a control circuit that converts the signals input from the switch group into day and month correction signals. and f a second detection circuit that receives the output signal from the month counter circuit and detects a large month, a small month, and February, and g an output signal from the day counter circuit and the second detection circuit. a first detection circuit that inputs an output signal from the circuit to detect an absent month/day; h) an output signal from the first detection circuit and a correction signal for the day or a date from the clock circuit; A flip-flop unit resets the day counter circuit when any of the count signals is input, and an output signal from the flip-flop unit and a day count signal from the clock circuit are input, and the day count signal from the clock circuit is input. a day counter reset circuit comprising: a month carry signal generating section that generates an output signal from the flip-flop section as a carry signal for the month counter circuit only when the clock circuit is input; a display device that inputs output signals from the counter circuit and the month counter circuit to display the time, day, and month; The correction signal for the month is inputted to the detection circuit and the day counter reset circuit, and the correction signal for the month is inputted to a gate provided at the front stage of the month counter circuit in parallel with the output signal of the month carry signal generation section of the day counter reset circuit. An electronic timepiece with a calendar, characterized in that an output signal from the gate is input to a count input section of the month counter circuit.