JPS5815797B2 - calendar display device - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electronic calendar display device.

Recently, electronic wristwatches that display the time and date digitally, that is, electronic wristwatches with a date display function, have been devised and put into practical use.

However, although the above-mentioned electronic wristwatch displays the time and date by pressing a button, it only displays the day and cannot display a monthly calendar.

In other words, due to the limited display area of a wristwatch, conventionally it has not been possible to provide a monthly calendar display function.

Moreover, most of the calendar display devices having only a calendar display function are mechanical type.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an electronic calendar display device which is in a seven-day table display format and can display a calendar for any month by pressing a button.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 11 is an oscillator, and a reference pulse signal outputted from the oscillator 11 is sent to a frequency dividing circuit 12 and frequency-divided.
P/S is output.

This frequency dividing circuit 12 includes a decimal counter 13, a hexadecimal counter 14, a decimal counter 15, a hexadecimal counter 16, and a hexadecimal counter 12.
A binary counter 17 and a binary counter 18 are connected in series,
The counters 13 to 18 each output a pulse signal of 1 P/10 S with a period of 10 seconds, and a pulse signal of 1 P with a period of 1 minute.
/M, pulse signal 1P/10M with a period of 10 minutes, pulse signal 1P/H with a period of 1 hour, pulse signal I with a period of 12 hours
P/12H A pulse signal IP/D with one cycle of one day is output.

Signals indicating the contents of the counters 14 to 18, that is, time-based signals, are sent to the switching circuit 19.

The switching circuit 19 selects and takes out the above-mentioned time-based signal and a calendar-based signal provided from a calendar system, which will be described in detail later, in response to a switching command given by push button operation. Calendar signals are sent to a liquid crystal display section 22 via a decoder 20 and a driver 21 and displayed thereon.

Further, the cycle 1-day no-hals signal IP/D output from the binary counter 18 is sent to a calendar system circuit.

This calendar system circuit has a day counter 23 and a month counter 2.
4. Day of the week standard counter 25, these counters 23-2
A carry control unit 26 performs carry control of 5 and a month counter 24 according to the next month display command given by external operation.
and a calendar control section 27 that controls the day of the week standard counter 25, and the output signal of the binary counter 18 of the time system circuit is given to the day counter 23.

Then, signals indicating the contents of each of the counters 23 to 25 are sent to the switching circuit 19 as calendar signals.

Further, the details of the calendar system circuit will be explained with reference to FIG.

The day counter 23 is a 31-decimal counter, and the output terminal 23a
~23d, a "1" signal is output from the output terminal 23a when the counter content reaches 28, that is, on the 28th day, and a "1" signal is output from the output terminal 23b on the 29th day.
A "1" signal is output from the output terminal c on the 30th day, and a "1" signal is output from the output terminal 23d on the 31st day.

Output terminals 23a to 23c of the day counter 23
The signals outputted from are applied to the first input terminals of AND circuits 30a to 30c in the carry control section 26, and the output signals of these AND circuits 30a to 30c are sent to the OR circuit 31 to reset the day counter 23. It is applied to the signal input terminal of the month counter 24 via the OR circuit 32 and sent to the signal input terminal of the month counter 24 .

Further, a signal input terminal of the month counter 24 is given a command to display the next month by pressing a button via an input terminal 33 and the OR circuit 32.

In this case, the day counter 23 is reset by the trailing edge of the output signal of the OR circuit 31, and the month counter 24 is reset by the trailing edge of the output signal of the OR circuit 31.
The trailing edge of the signal output from 2 is increased by "+1".

The month counter 24 is a hexadecimal counter with output terminals 24a~
24d, and the counter contents are output from the output terminal 24a.
1.3.5.7°8.10.12'', that is, the 91'' signal is output for a month whose end is the 31st.

Further, a 91〃 signal is output from the output terminal 24b of the counter 24 when the counter content is "4.6.9.11".

In other words, a "1" signal is output for a month in which the end of the month is the 30th day.

For convenience of explanation below, the month with the 31st month is the dog month, and the month with the 31st day is the dog month.
A month with day 0 is called a small month.

Further, the output terminal 24c of the month counter 24 outputs a "1" signal when the counter content is 2, that is, for February.

Furthermore, the output terminal 24d of the month counter 24 outputs a "1" signal when the counter content is 12, that is, for December.

Therefore, the signals output from the output terminals 24a to 24c of the month counter 24 are outputted from the AND circuits 34a to 34, respectively.
is applied to the first input terminal of c.

Further, the output signal of the OR circuit 32 is applied to the third input terminals of the AND circuits 34a and 34c and the second input terminal of the AND circuit 34b, and the leap year instruction is applied to the input terminal 35 at the second input terminal of the AND circuit 34c. given through.

This leap year command is given by pressing a button, and is used when changing from at least February 28th to February 29th in a leap year.

The leap year command is generated, for example, by setting a flip-flop circuit by pressing a button for the leap year command.

This flip-flop circuit for leap year instructions is used on January 1 of the leap year.
It is set by pressing the button as described above between February 28th and February 28th, and then reset when the content of the day counter 23 reaches 31 in December, for example.

Further, the leap year command may be obtained by locking the leap year command push button at the first operation and unlocking at the next operation.

The output of the AND circuit 34a is sent as a "+4" command, the output of the AND circuit 34b is sent as a "+5" command, and the output of the AND circuit 34c is sent as a "+6" command to the hexadecimal day-of-the-week reference counter 25.

In other words, when the end of the month changes from a dog month with a 31st day to the next month, the day of the week starts on the 4th, and when the end of the month changes from a small month with a 30th day to the next month, the day of the week starts on the 5th, and in a leap year. Focusing on the fact that 6 days are added to the starting point of the day of the week when changing from February to March, the AND circuits 34a to 34c give addition commands of "+4" to "+6" to the day of the week reference counter 25. It is.

For example, if the 1st is a Sunday, and the end of the month is a dog month with 31 days, the 5th will be the first Sunday of the following month, and if the end of the month is a small month with 30 days, the 6th will be the first Sunday of the next month. ,Also,
If the current month is February in a leap year, the 7th of the following March is the first Sunday.

Note that when changing from February to March in a normal year, the starting point of the day of the week does not change, so no addition command is given to the day of the week reference counter 25.

Thus, the signal output from the output terminal 24b of the month counter 24 is sent to the second input terminal of the AND circuit 30c, and the signal output from the output terminal 24c is sent to the AND circuit 30c.
It is applied to the third input terminal of 0a and the second input terminal of AND circuit 30b.

Further, the second input terminal of the AND circuit 30a is connected to the input terminal 3.
A leap year instruction given to 5 is added via inverter 36.

Further, the next month display command given to the input terminal 33 and the signal output from the output terminal 24b of the monthly calendar 24 are applied to an AND circuit 37 in the calendar control section 27, and the output of this AND circuit 37 is Circuit 38a, 3
8b, and is applied via an inverter 39 to a second input terminal of an AND circuit 34a.

The output of the AND circuit 38a is sent to the day of the week reference counter 25 as a "+5" command, and the output of the AND circuit 38b is sent as a "+6" command.

The “+5” instruction output from the AND circuit 38a is
In a normal year, the "+6" command output from the AND circuit 38b is used when changing from December to January of the same year by the next month display command. Used when changing by display command.

Next, the configuration of the liquid crystal display section 22 will be explained with reference to FIG.

As shown in FIG. 3, the liquid crystal display section 22 includes, for example, an FEM (
Field effect mode) Each segment of the liquid crystal display device is constructed as a dot type.

That is, 41 is an hour/month display section, which is composed of a 10th digit display section 41a in which dot type segments are arranged in a line, and a 1st digit display section 41b in which dot type segments are arranged in a Japanese character shape.

Reference numeral 42 designates the minute/day display section, which has, for example, 35 dot-type segments arranged in a matrix of 5 rows and 7 columns.
Numbers up to 1 are printed or engraved in numerical order.

In this case, the number of days in each month changes depending on the month, but unnecessary segments are masked according to the contents of the month counter 24.

A second/day of the week display section 44 consisting of seven segments 431 to 437 corresponding to each column is disposed above the minute/day display section 42.

When the seconds/day of the week display section 44 displays the time system, segments 431 to 436 display seconds in units of 10 seconds, and segments 43 . displays morning and afternoon, that is, AM/PM, and in the case of a calendar display, segments 43□ to 43□ display the day of the week.

That is, any one of the segments 43□ to 43□ is driven to define the reference point of the day of the week, for example, the position of Sunday, thereby defining the other days of the week.

The minute/day display section 42 and second/day of the week display section 44 are configured to display a seven-day calendar when switched to a calendar display.

Further, between the hour/month display section 41 and the second/day of the week display section 44, segmentation display segments 45a and 45b for dividing the image display sections 41 and 44 are provided.

For example, in the case of a time-based display, the segments 45a and 45b are driven in flashing every second to display the seconds, and in the case of a calendar-based display, they are driven continuously once to perform the calendar-based display. Show that.

Next, the present invention configured as described above will be explained in detail.

First, the contents of the counters 13 to 18, the month counter 24, and the day counter 23 are corrected to match the correct time, month, and day.

Also, the contents of the day of the week standard counter 25 are as follows:
The Seven Days table consisting of 2 and second/day of the week display section 44 is corrected to match that of the month.

Therefore, counters 13 to 18 modified as above
performs a timekeeping operation by counting the pulse signal 1P/S with a period of 1 second output from the frequency dividing circuit 12.

The day counter 23 and the month counter 24 also use a pulse signal 1P/D with a period of 1 day output from the binary counter 18.
Counting operation is performed based on .

Then, the day of the week reference counter 25 is set to add its contents in response to a command from the carry control section 26.

When the display is switched to the time system by pressing a button, the signals output from the counters 14 to 18 are selected by the switching circuit 19 and sent to the liquid crystal display section 22 via the decoder 20 and driver 21. Is displayed.

Figure 4 shows an example of the time system display.
This shows that the time has reached 8 minutes and 10 seconds.

The segment 437 of the seconds/day of the week display section 44 is driven to indicate afternoon, and the segments 43□, 432
It is shown that the time is on the order of 10 seconds by being driven to display.

In addition, in this time-based display, segments 45a,
45b is flashed at one-second intervals to display seconds.

In addition, when the display is switched to the calendar system by push button operation, the outputs of the counters 23 to 25 are output from the switching circuit 1.
9 is selected and sent to the liquid crystal display unit 22 via the decoder 20 and driver 21 to display the month, day, and day of the week.

Figure 5 shows an example of a calendar display.
This shows a state in which Tuesday, the 12th of the month is displayed.

In this example, the segment 433 of the second/day of the week display section 44 is driven to display that the first Sunday is the 3rd, and the 12th segment of the minute/day display section 42 is driven to flash to indicate that the current day is the 12th. It shows that.

In addition, since the end of the month in February is the 28th in a normal year, the minute/day display section 42029 and subsequent seven segments are driven to mask the numbers marked inside the segments, so that the month of February is the 28th.
It shows that it is until the 8th.

Furthermore, segments 45a and 45b for divisional display are displayed to indicate that a calendar type display is currently being performed.

In the case of February, a "1" signal is output from the output terminal 24c of the month counter 24 corresponding to February, and is applied to the AND circuits 30a and 30b.

In a normal year, the signal applied to the input terminal 35 is "0", so the output of the inverter 36 is "1".
"This is applied to the second input terminal of the AND circuit 30a.

Therefore, the content of the day counter 23 becomes 28, and the output terminal 2
When the 11" signal is output from 3a, the AND circuit 30a
The logical condition is satisfied, and a "1" signal is output from the AND circuit 30a.

This “1” signal is sent to the counter 2 via the OR circuit 31.
3, and by its trailing edge, that is, when the content of the day counter 23 changes from 28 to 29, the day counter 23 is reset and its content returns to "1".

Moreover, the “1” signal output from the AND circuit 30a is
is sent to the month counter 24 via OR circuits 31 and 32,
By that edge, the contents of the month counter 24 are incremented by "+1", and the month display changes from February to March.

When changing from February to March in this normal year, the day of the week reference point does not change, that is, February and March start from the same day of the week, so no addition command is given to the day of the week reference counter 25.

On the other hand, in a leap year, by operating the leap year command push button,
Since a 1" signal is applied to the input terminal 35, the output of the inverter 36 becomes "O", closing the gate of the AND circuit 30a.

Therefore, even if a "1" signal is output from the output terminal 23a when the content of the day counter 28 reaches 28 in February, the AND circuit 30a does not output a "1" signal and the day counter 23 is not reset.

Therefore, the content of the day counter 23 becomes 29 by counting the next input pulse, and the date of February 29th is displayed.

Then, when the content of the day counter 23 reaches 29, a "1" signal is output from the output terminal 23b.

This 91" signal is output from the AND circuit 30b and sent to the reset terminal of the day counter 23 via the OR circuit 31, and the day counter 23 is reset by its trailing edge.
Its contents return to "1".

Moreover, the “1” signal output from the AND circuit 30b is
AND circuits 34a to 34c via OR circuits 31 and 32
added to.

On the other hand, in a leap year, a 1" signal is applied to the second input terminal of the AND circuit 34c via the input terminal 35, so
In February, “1” is output from the output terminal 24c of the month counter 24.
“When the signal is output, the OR circuit 3
When the 2 to 1" signal is output, the logic condition of the AND circuit 34c is satisfied, and the AND/Which circuit 34c gives a "+6" command to the day-of-the-week standard counter 25, and the counter contents are incremented by "+6" at its trailing edge.

Further, the "1" signal outputted from the OR circuit 32 is sent to the month counter 24, and the trailing edge causes the "1" signal to be sent to the month counter 24.
Add "+1" to the contents and change the month display from February to March.

In this way, when changing from February to March in a leap year, the content of the day of the week reference counter 25 is incremented by "+6", and in February, for example, the segment 433 of the second/day of the week display section 43 is displayed as shown in FIG. If it were driven, segment 432 would be driven to display 1 in March, which would be the first Sunday to the second day of March.

Therefore, March is a large month with the last day being the 31st, and a "1" signal is output from the output terminal 24a of the month counter 24, opening the gate of the AND circuit 34a.

In this state, when the content of the day counter 23 becomes 31 and a "1" signal is output from its output terminal 23d, this 1
“The signal is sent via the OR circuit 31 to the day counter 23 and further via the OR circuit 32 to the month counter 24, resetting the day counter 23 at its trailing edge;
The contents of the month counter 24 are incremented by "+1".

Further, the output signal of the OR circuit 32 is sent to the day of the week reference counter 25 via the AND circuit 34a as a "+4" command, and the counter contents are incremented by "+4" at the trailing edge.

The day of the week reference counter 25 incremented by "+4" determines the starting point of the day of the week of the month following the dog month.

Therefore, if the first Sunday of the dog month is the 2nd, as shown in the example of March above, then the first Sunday of April will be the 6th.

The month of April ends on the 30th, and a "1" signal is output from the output terminal 24b of the month counter 24, opening the gates of the AND circuits 30c and 34b.

Therefore, the content of the day counter 23 becomes 30, and the output terminal 2
When a "1" signal is output from 3c, this "1" signal is sent to the day counter 23 via the AND circuit 30c and the OR circuit 31, and further sent to the month counter 24 via the OR circuit 32. At the trailing edge, the day counter 23 is reset and the month counter 24 is incremented by "+1".

Further, the output signal of the OR circuit 32 is output from the AND circuit 34b.
is sent as a "+5" command to the day of the week standard counter 25 via the following, and the counter contents are incremented by "+4" at the trailing edge.

The day of the week reference counter 25 incremented by "+5" determines the starting point of the day of the week of the month following the small month.

Therefore, if the first Sunday in April is the 6th as described above, the first Sunday in May is the 4th.

Thereafter, the starting point of the day of the week for the next month is determined in the same manner depending on whether the month is a large month or a small month.

If the user wishes to view the calendar for another month in the same year, a command to display the next month is given to the input terminal 33 by pressing a button.

This next month display command is sent to the OR circuit 3 via the input terminal 33.
2, so from the day counter 23 the AND circuit 3
It has the same effect as the signal outputted via 0a to 30c and the OR circuit 31, and the month counter 24 and day of the week reference counter 25 change to the next month in response to the next month display command.

In this case, the contents of the mill counter 23 do not change.

Thereafter, by giving the next month display command in the same manner, the calendar for the next month is displayed in sequence.

However, when changing from December to January by the next month display command, it needs to be changed to January within the same year, not January of the following year, so even if December is a major month, the "+4" command Instead, another addition command is sent to the day of the week reference counter 25.

That is, when the content of the month counter 24 reaches 12, a 1'' signal is output from the output terminal 24d, and is sent to one input terminal of the AND circuit 37 to open its gate.

In this state, the input terminal 33 receives the next month display command, that is, “1”.
When the signal is applied, this "1" signal is output from the AND circuit 37 and sent to the AND circuits 38a and 38b.

Further, when the AND circuit 37 outputs a "1" signal, the output of the inverter 39 becomes 0, and the AND circuit 34a
Close the gate.

Therefore, even if December is the dog month, the output of the AND circuit 34a, that is, the generation of the "+4" command is prohibited.

However, in a normal year, the signal to the input terminal 35 is "0".
Since the output power of the inverter 36 is "1", the gate of the AND circuit 38a is opened and the gate of the AND circuit 38b is closed.

Therefore, by the next month display command, the AND circuit 37 outputs “1”.
When the signal is output, this "1" signal is output to the AND circuit 38.
a, and is sent to the day of the week reference counter 25 as a "+5" command, and the day of the week reference counter 25 is output by the trailing edge.
The content of is increased by "+5".

Further, the next month display command is sent to the month counter 24 via the OR circuit 32, and the trailing edge causes the next month display command to be sent to the month counter 24 via the OR circuit 32.
The content of is incremented by "+1".

As a result, the contents of the month counter 24 return from "12" to "1", and the month display changes from December to January of the same year.

Further, if it is a leap year, a leap year command is given to the input terminal 35, so the gate of the AND circuit 38b is open and the gate of the AND circuit 38a is closed.

Therefore, by the next month display command, "1" is sent from the AND circuit 37.
“When the signal is output, this “1” signal is output to the AND circuit 3.
8b, and is sent to the day of the week reference counter 25 as a "+6" command, and the day of the week reference counter 2 is output by the trailing edge.
The contents of 5 are increased by "+6".

Further, at this time, the contents of the month counter 24 are also incremented by "+1" by the next month display command and return to January.

In this way, when the next month display command changes from December to January, a "+5" command in a normal year and a "+6" command in a leap year is sent to the day of the week reference counter 25, and the calendar for January of the same - year is sent. will be displayed.

On the other hand, when the contents of the month counter 24 change to January due to the signals output from the day counter 23 via the AND circuits 30a to 30c and the OR circuits 31 and 32, the output of the AND circuit 37 is "0" and The outputs of the circuits 38a and 38b are prohibited, and "+4" is output from the AND circuit 34a.
Since the command is sent to the day of the week standard counter 25,
It becomes a calendar display for the month.

In the above embodiment, the hour/month display portion 41 is also formed of dot-type segments, but it goes without saying that the conventional segment shape may be used as is for this portion.

Moreover, it can be used not only for wristwatches but also for various types of timepiece devices such as table clocks, and is not limited to the embodiments but can be applied in various ways.

In the embodiment, when the next month display command is given, the switch must be operated many times to return to the current month display, but for example, by memorizing the current month display, it is possible to return You can return to the original month display by simply replacing the switch.Furthermore, the month display contents from the current month to +12 can be stored as an address, and the month display contents can be changed from the desired address by operating the switch. may be read out.

As described above, according to the present invention, it is possible to provide a calendar display device that is capable of displaying a calendar in light units in the display format of the Seven Days of the Month table, and that can also display the calendar of any month by external operation. can.

[Brief Description of the Drawings] Figures 1 to 5 show an embodiment of the present invention.
Figure 1 is a circuit diagram showing the overall configuration, Figure 2 is a circuit diagram showing details of the calendar system, Figure 3 is a diagram showing the configuration of the liquid crystal display, and Figure 4 is the time system in the liquid crystal display. FIG. 5 is a diagram showing a calendar display state on the liquid crystal display section. 13-18...Time system counter, 23...
...Day counter, 24...Month counter, 25.
. . . Day of the week reference counter, 26 . . . Carry control section, 27 . . . Calendar control section.

Claims (1)

[Scope of Claims] 1. A date display section on which dates for at least one month are displayed, and a specific day of the week specifying means for displaying a calendar displaying a date corresponding to a specific day of the week in the date display section; external operation switch means for giving a calendar display command for a desired month; and means for changing the date specified by the specific day of the week specifying means according to the desired month in accordance with the display command from the external operation switch means; A calendar display device characterized in that a calendar for a desired month can be displayed arbitrarily by operating an operation switch means. 2. A date display section on which the dates of at least one month are displayed; a specific day-of-the-week specifying means for displaying a calendar by clearly indicating the date corresponding to a specific day of the week in the date display section; and a calendar display for a desired month. The external operation switch means includes an external operation switch means for giving a command, and means for changing the date specified by the specific day of the week indication means according to the desired month within the same year in response to a display command from the external operation switch means. 1. A calendar display device characterized in that a calendar table for a desired month within the same year can be arbitrarily displayed.