JPS6137589B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calendar display device in an electronic timepiece.

Electronic watches are generally configured to digitally display time information obtained by frequency-dividing a signal from a reference oscillation source, but recently, the above-mentioned time information is further counted to display calendar information such as month and day. Get the moon,
A device that can display the date, etc. is being considered. In order to plan dates and plans, it is very convenient to know not only the month and day information, but also the calendar table for one month. Therefore, the number fonts for dates from ``2'' to ``31'' are arranged in multiple columns according to the calendar table for the 7th day of the month, and a day of the week column designation display font is provided corresponding to the multiple column husbands. It has been proposed to display a calendar for one month by lighting up the day of the week column designation display in the column corresponding to Sunday in accordance with the month information. However, with this configuration, the leftmost column does not have Sunday as in a normal calendar table, and the Sunday column changes depending on the month. One drawback is that it is difficult to tell which day of the week it is.

The present invention was made in view of the above circumstances, and
A column corresponding to a specific day of the week is provided for each of the multiple columns of the calendar display section, in which date numerals from "1" to "31" are arranged in multiple columns according to the calendar table of the 7 days of the week. In a calendar display device that displays a plurality of day-of-week column designations, even if the column corresponding to a specific day of the week changes depending on the month, it is possible to clearly know the memory of the day of the week or any arbitrary day in columns other than the specific day-of-the-week column. The purpose of the present invention is to provide a calendar display device that can perform the following functions.

An embodiment of the present invention will be described below with reference to the drawings. First, the overall circuit configuration of an electronic timepiece equipped with a calendar function will be explained with reference to FIG. 1st
In the figure, 1 is an oscillation circuit that generates a reference pulse signal with a constant period.The reference pulse signal output from the oscillation circuit 1 is divided into a signal with a period of 1 second by a frequency divider circuit 2, and a 10-second counter 3 is input to.
This 10 second counter 3 counts the input 1 second signal and sends a pulse signal to the hour/minute counter 4 every 10 seconds. The hour and minute counter 4 obtains minute information and hour information by counting input pulses, and also obtains a daily cycle signal. The daily cycle signal outputted from the hour and minute counter 4 is input to a date counter 5 in 31 decimal notation and a day of the week counter 6 in 7 decimal notation. The date counter 5 has count contents of 28th, 29th, 30th as well as an output line that outputs date information.
It is equipped with output lines a, b, c, and d that output "1" signals when switching from the 31st to the 31st, respectively, and the signals output to the output lines a, b, and c are output to AND circuits 9a and 9b. , 9c. The outputs of the AND circuits 9a, 9b, and 9c are taken out via the OR circuit 10 together with the signal output from the output line d of the date counter 5, and sent to the date counter 5 as a reset signal, as well as the month in decimal notation. It is sent to the counter 11 as a count up signal.
This monthly counter 11 has an output line a that outputs monthly information (parallel information), an output line b that outputs monthly information serially, an output line c that outputs a "1" signal in February, and an output line c that outputs a "1" signal in February, and the end of the month is on the 30th. Output line d outputs a “1” signal during small months (April, June, September, November), and output line d outputs a “1” signal during small months (January, March, May, July). August, 10
Output line e that outputs a “1” signal when the month, December)
It is equipped with And the output line c of the month counter 11
The signals output from the AND circuits 9a and 9b
added to. Further, a leap year command is directly applied to the AND circuit 9a, and a leap year command is applied to the AND circuit 9b via the inverter 12. Further, the signal outputted from the output line b of the month counter 11 is sent to the auxiliary decimal counter 14 via the AND circuit 13. Therefore, the outputs of the 10 second counter 3, hour/minute counter 4, day of the week counter 6, date counter 5, month counter 11, and auxiliary counter 14 are output from AND circuits 15, 16, 19, and 2, respectively.
1 to 23. Also, the AND circuit 19,
21 and 22 are directly supplied with the operation output of switch S ₁ for switching between time display and date display, and AND circuits 15 and 16 are supplied with the operation output of switch S ₁ via inverter 30 . Also, 17,1
8 and 20 are AND circuits into which data relating to day of the week display is input from a day of the week standard auxiliary counter, a day of the week indication counter, etc., which will be described in detail later. Further, a 2 Hz signal for flushing is inputted from the frequency divider circuit 2 to the AND circuits 17 and 20. Therefore, the outputs of the AND circuits 15 to 23 are the OR circuits 24a to 24a.
The signal is sent to the display drive circuit 25 via 24c, and the display drive circuit 25 drives the display device 31 shown in FIG. The display drive circuit 25 includes, for example, four decoder drivers 26 to 29, and the decoder driver 26 includes an AND circuit 1
The outputs of the AND circuits 16, 21 to 23 are input to the decoder/driver 27 via the OR circuit 24b, and the outputs of the AND circuits 16, 21 to 23 are input to the decoder/driver 27 via the OR circuit 24b. The outputs of 19 and 20 are inputted via an OR circuit 24. Furthermore, a signal is input to the decoder driver 29 when displaying a calendar, details of which will be described later. The display device 31 shown in FIG.
Each display section of is driven.

As shown in the display format of FIG. 2, the display device 31 has an hour/minute/month/day display section 32 configured using numeric segments, and a date numeral from "1" to "31" is displayed in the numeric segments. A calendar table 33 arranged in multiple day of the week columns using space between the 10's and 10's is arranged corresponding to each day of the week column of this calendar table 33 and specified corresponding to each "10 second" unit or "month". It consists of a second/day of the week reference display section 34 and a day of the week display section 35 that displays the current day of the week. the above
The 10 seconds/day of the week reference display section 34 consists of seven day of the week column designation displays, and each display has, for example, "0" to "5".
A “+” number or symbol is attached. The 10 seconds/day of the week reference display section 34 corresponds to the decoder/driver 26 in FIG.
The date display part 32 is a decoder/driver 26, an hour/
The minute/month/day display section 32 is the decoder/driver 2
7. The day of the week display section 35 is a decoder/driver 28;
Calendar tables 33 are each driven by decoder driver 29.

In Fig. 1, _S2 is a switch that changes between time display and calendar display, _S3 is a switch that advances the month displayed on the calendar, and _S4 is a switch that advances the month displayed on the calendar backwards. The outputs of S ₂ -S ₄ are taken out via one shot circuits 41 - 43. The output of the one-shot circuit 41 is applied to a trigger input terminal T of a T-type flip-flop 44 and also to AND circuits 45 and 46. Further, the Q and output of the flip-flop 44 are applied to the AND circuits 45 and 46, respectively. The flip-flop 44 is triggered by the trailing edge of the input pulse, and its output is connected to the decoder driver 29 and the AND circuit 17,
18, 20, 23 and the AND circuits 15, 16, 19, 2 via an inverter 47.
1,22. Further, the outputs of the one-shot circuits 42 and 43 are outputted to delay circuits 48 and 43, respectively.
+1 signal, -1 to the auxiliary counter 14 via 49
Added as a signal. Furthermore, the output of the AND circuit 45 is inputted to the auxiliary counter 14 as a clear signal, and the output of the AND circuit 46 is applied to the AND circuit 13 and sent to the auxiliary counter 14 and the month counter 11 as a shift signal. The auxiliary counter 14 is provided for the monthly counter 11, and is designed to count from January to December, and the counter contents are February, March, April, and June. Month, September, November, 5
It is provided with output lines a to e that output a "1" signal in January, July, October, December, January, and August. The signals output from the output lines b and d of the auxiliary counter 14 are applied to AND circuits 50 and 51, respectively, and the signals output from the output lines c and e of the auxiliary counter 14 are applied to the AND circuit 52 via an OR circuit 53. added to. The above AND circuits 50 to 52
is gate-controlled by the output of the one-shot circuit 42, and the output is inputted to a heptadary auxiliary counter 54 as +1, +2, and +3 signals. This auxiliary counter 54 is a standard day of the week column display means for displaying the standard day of the week column of the current month. is input via an AND circuit 56 and an OR circuit 57 which are gate-controlled by the output of the AND circuit 46. The output of this auxiliary counter 54 is inputted to a septal auxiliary counter 59 via an AND circuit 58, and is also input to an AND circuit 60 and an OR circuit 59.
7 to its input terminal. Further, the output of the AND circuit 45 is inputted to the auxiliary counter 54 as a clear signal, and the output of the AND circuit 46 is inputted via the OR circuit 61 as a shift signal. In addition, the flip-flop 44
The Q-side output of the switch S1 and the operation output of the switch _S1 are applied to a one-shot circuit 63 via an AND circuit 62, and the output of this one-shot circuit 63 is applied to AND circuits 60, 58 and an OR circuit 61, as well as a heptad day of the week indication. is added to counter 64. The output of the day of the week indication counter 64 is output from the AND circuit 2.
Added to 0. In addition, the one-shot circuit 6
The output of 3 is applied to the set terminal S of flip-flop 66 via delay circuit 65. In this flip-flop 66, the output of the AND circuit 45 is input to the reset terminal R, and the Q side output is input to the AND circuit 6.
7. For example, a 1/2 Hz signal is inputted to the AND circuit 67 from the frequency dividing circuit 2, and its output signal is sent to the auxiliary counter 59 and the day of the week indication counter 64 as a count-up signal. The outputs of the auxiliary counters 54 and 59 are input to AND circuits 18 and 17. Thus, the day of the week reference counter 55 receives the signals output from the output lines c, d, and e of the month counter 11 through an AND circuit 6 whose gate is controlled by the output of the OR circuit 10.
8a to 68c as +6, +5, +4 signals. Further, the signals output from the output lines a and c of the auxiliary counter 14 are sent to the auxiliary counter 54 via AND circuits 69a and 69b gate-controlled by the output of the one-shot circuit 42.
6, +5 signals, and the signals output from the output lines b, d, e of the auxiliary counter 14 are inputted as +5 signals via the OR circuit 70 and the AND circuit 69c.
It is input as 4 signals. This AND circuit 69c
is gated by the output of one-shot circuit 42. In addition, the AND circuits 50, 68
a, 69a are further gate-controlled by a leap year command.

Next, the operation of the present invention configured as described above will be explained. A reference pulse signal outputted from the oscillation circuit 1 is frequency-divided by a frequency dividing circuit 2 into a signal having a period of 1 second. This one-second cycle signal is sequentially counted by a 10-second counter 3, an hour/minute counter 4, a date counter 5, and a month counter 11 to obtain time information and date information. In this case, the month counter 11 outputs a "1" signal from any of the output lines c to e according to the month, controls the gates of the AND circuits 9a to 9c, and controls the date counter 5 when changing the month. I'm going. That is, in the case of February, a "1" signal is output from the output line c of the month counter 11, and the AND circuit 9
a, 9b. If it is a normal year, the leap year command is "0", the output of the inverter 12 is "1", and the gate of the AND circuit 9a is opened. Therefore, the content of date counter 5 changes from "28th" to "29th".
When a "1" signal is output to the output line a when switching to "day", this "1" signal is applied to the reset terminal of the date counter 5 via the AND circuit 9a and the OR circuit 10, The contents are reset and return to "1st day". In addition, if it is a leap year, the gate of the AND circuit 9b is opened by the leap year command, so when the content of the date counter 5 changes from "29th" to "30th", "1st ” is reset. Also, the end of the month is “30
In the month "day", the "1" signal is output from the output line d of the month counter 11 and given to the AND circuit 9c, so the signal output from the output line c of the date counter 5 is sent to the AND circuit 9c and the OR circuit. 10, and is reset to "1st" when the content of date counter 5 changes from "30th" to "31st". Furthermore, in a month where the end of the month is the 31st, all the gates of the AND circuits 9a to 9c are closed, so the date counter 5 counts up to the 31st, and then the signal output from its own output line d It will be reset to "1st". Further, the signal output from the OR circuit 10 is sent to the month counter 11, and its contents are counted up by "1". Furthermore, the signals output at the time of monthly change are applied to AND circuits 68a to 68c. These AND circuits 68a to 68c are selected according to the contents of the month counter 11, and the contents of the day of the week reference counter 55 are corrected by their output signals. The day of the week standard counter 55 is initially set to display the standard day of the week column, for example, the Sunday column, for a predetermined month in the calendar table, but after that, when the month changes, the AND circuit 68a
~68c is corrected by the output. That is,
When switching from February to March in a normal year, the standard day of the week column does not change, so no correction is made.
When switching from March to March, the AND circuit 68a is designated by the leap year command and the signal output from the output line c of the month counter 11.
The output of 8a is sent as a correction signal of "+6" to the day of the week standard counter 55, and the count contents are corrected. Further, when the end of the month changes from a small month with "30 days" to the next month, the AND circuit 68b is designated by the signal output from the output line d of the month counter 11, and the output of the AND circuit 68b determines the contents of the day of the week standard counter 55. is increased by "+5". Furthermore, if the end of the month changes from a large month with "31st" to the next month, the month counter 11
The AND circuit 68c is designated by the signal outputted from the output line e, and its output increments the contents of the day of the week reference counter 55 by "+4". In this way, the monthly change control for the date counter 5 and the day of the week reference counter 55 is performed.

Therefore, under normal conditions, that is, when the switches _S1 to _S4 are not operated, the outputs of the inverters 30 and 47 are "1" and the gates of the AND circuits 15 and 16 are opened. Therefore, the contents of the 10 second counter 3 and the hour/minute counter 4 are the AND circuits 15 and 16.
and a decoder via OR circuits 24a and 24b.
The signals are sent to the drivers 26 and 27, and the decoder drivers 26 and 27 output 10 signals as shown in FIG.
The seconds/day of the week reference display section 34 and the hour/minute/month/day display section 32 are driven to display the time. Figure 3 shows the display status of "10:58:20".

If the switch _S1 is closed while the time is being displayed in this way, the date will be displayed instead of the time. That is, when the switch _S1 is closed, the operation output of the switch _S1 becomes "1", and the gates of the AND circuits 19, 21, and 22 are opened.
At this time, since the output of the inverter 30 becomes "0", the gates of the AND circuits 15 and 16 are closed, and the output of time information is prohibited. The above AND circuits 21 and 22
date counter 5 by opening the gate of
The count contents of the month counter 11 are sent to the decoder/driver 27 via the AND circuits 21, 22 and the OR circuit 24b, and the hour/minute/month/day display section 32 is driven to display as shown in FIG. The date will be displayed. Further, by opening the gate of the AND circuit 19, the contents of the day of the week counter 6 are transferred to the decoder driver 28 via the AND circuit 19.
The decoder/driver 28 drives the day of the week display section 35 to display as shown in FIG. FIG. 4 shows the display state of "Monday, November 21st (Mo)". When the switch _S1 is opened, the output of the inverter 30 becomes "1" and the gates of the AND circuits 15 and 16 are opened, thereby returning to the normal time display state.

Also, if you want to see the calendar table, open switch _S2 . When the switch _S2 is opened, a one-shot pulse signal is output from the one-shot circuit 41, and the flip-flop 44 and AND circuit 4
Added to 5,46. At this time, the flip-flop 44 is in a reset state, and the side output becomes "1" and is applied to the AND circuit 46. Therefore, the output of the one-shot circuit 41 is output from the AND circuit 46.
, and is sent as a shift signal to the auxiliary counter 14 and the month counter 11, and is also applied to the AND circuit 13. Therefore, month counter 1
The contents of 1 are set in the auxiliary counter 14 via the AND circuit 13. At the same time, the output of the AND circuit 46 is sent as a shift signal to the auxiliary counter 54 and the day of the week reference counter 55, and is also applied to the AND circuit 56. Therefore, the contents of the day of the week reference counter 55 are set in the auxiliary counter 54 via an AND circuit 56 and an OR circuit 57. Thereafter, the flip-flop 44 is inverted by the trailing edge of the output signal from the one-shot circuit 41, and outputs a "1" signal from the Q side output terminal. The output of this flip-flop 44 is the AND circuit 1
8 and 23 to open its gate and is sent to the decoder driver 29. As a result,
The decoder driver 29 drives the calendar table 33 to be displayed as shown in FIG. Further, the contents set in the auxiliary counter 14 from the month counter 11 are sent to the decoder/driver 29 via the AND circuit 23 and the OR circuit 24, and as shown in FIG. The month is displayed in . Furthermore, the contents set in the auxiliary counter 54 from the day of the week standard counter 55 are passed through the AND circuit 18 and the OR circuit 24a to the decoder.
Sent to driver 26, 10 seconds/day of week reference display section 3
4 specifies the day of the week reference (Sunday column) as shown in FIG. Figure 5 shows the calendar for November.

As shown in Figure 5, for example, 11
When the monthly calendar is displayed, if you want to see the previous month's calendar, operate switch _S4 , and if you want to see the next month's calendar, operate switch _S3 . First, switch to Switch S ₄ to see the previous calendar.
, a pulse signal is output from the one shot circuit 43 and applied to the AND circuits 50-52. These AND circuits 50 to 52 are
A correction signal is output to the auxiliary counter 54 as selected and designated by the leap year command and the contents of the auxiliary counter 14 . That is, when returning from March to February in a leap year, the AND circuit 50 is specified and a correction signal of "+1" is specified, and when the end of the month returns to a small month with 30 days, the AND circuit 51 is specified and a correction signal of "+2" is sent. Correction signal, end of month is 31
When returning to the moon with the maximum of the sun, the AND circuit 52 is designated and a correction signal of "+3" is output, which is sent to the auxiliary counter 54. In addition, the one-shot circuit 43
The output is delayed by a predetermined time by the delay circuit 49 and sent to the auxiliary counter 14, and the count content is incremented by "-1". For example, if switch _S4 is operated from the November state shown in FIG. Therefore, the output of the one-shot circuit 43 is outputted via the AND circuit 52, and the output becomes "+3".
is sent to the auxiliary counter 54 as a correction signal.
As a result, the contents of the auxiliary counter 54 are incremented by "+3", and the contents are "6th", "13th", "20th", and "27th" in FIG.
As shown in Figure 6, Sunday standards are designated as ``2''.
Day of the week standard specification will be changed to "Sunday", "9th", "16th", "23rd", and "30th". In addition, the auxiliary counter 14
The content of is subtracted by "-1" from "11" by the output of the delay circuit 49 to become "10", and "October" is displayed on the hour/minute/month/day display section 32 as shown in FIG. . By operating the switch _S4 in this manner, the calendar for the previous month is sequentially displayed, so it is possible to go back to any month and view the calendar.

Furthermore, when switch _S3 is operated to view the calendar from the current month, that is, from November to the next month, as shown in FIG. 5, a signal is output from the one shot circuit 42.
It is added to AND circuits 69a to 69c. These AND circuits 69a to 69c are selected and designated by the leap year command and the contents of the auxiliary counter 14, and output correction signals to the auxiliary counter 54. In other words, if you want to advance from February to March in a leap year, use the AND circuit 69.
If a is specified and the correction signal is "+6", and the end of the month is 30th, the AND circuit 6 is used to advance from a small month to the next month.
9b is specified and the correction signal is "+5", the end of the month is 31
When proceeding from the month with the largest day to the next month, the AND circuit 69c is designated and a correction signal of "+4" is output and sent to the auxiliary counter 54. The contents of the auxiliary counter 54 are corrected according to the outputs of the AND circuits 69a to 69c, so that the day of the week standard display is adapted to the next month. Further, the output of the one-shot circuit 42 is sent to the auxiliary counter 14 via the delay circuit 48, and its contents are incremented by "+1". For example, when switch _S3 is operated from the state of "November" shown in FIG. ” will be done. By correcting the content of the auxiliary counter 54, the day of the week standard designations are as shown in FIG.
day” will now be specified. Further, the contents of the auxiliary counter 14 are counted up from "November" to "December" by a signal outputted from the one shot circuit 42 via the delay circuit 48, and as shown in FIG. “December” according to the date display section 32
is displayed. Thereafter, each time the switch _S3 is operated, the calendar for the next month is displayed in the same manner.

Furthermore, when the switch _S1 is momentarily closed in the above calendar display state, the day of the week is sequentially displayed in each day column as shown in FIGS. 8a and 8b.
That is, when the flip-flop 44 is set and the Q side output is "1", the switch S ₁
When it is instantaneously closed, the output of the AND circuit 62 becomes "1", and the one-shot circuit 63 outputs a one-shot signal. The output of this one-shot circuit 63 is applied to AND circuits 60 and 58 to open their gates, and also to the auxiliary counters 54 and 58.
59 as a shift signal. Therefore, the day of the week reference data stored in the auxiliary counter 54 is set to the auxiliary counter 59 via the AND circuit 58. Further, since the output of the auxiliary counter 54 is fed back to its own input side via the AND circuit 60 and the OR circuit 57, the same content is set in the auxiliary counter 54 again. Further, the output of the one shot circuit 63 is sent to a day of the week indication counter 64 to clear its contents, and a delay circuit 65
The flip-flop 66 is set via the . At this point, the auxiliary counter 59 is set with data for the day of the week reference, that is, Sunday, and the content of the day of the week indication counter 64 is "0", that is, data indicating Sunday as the day of the week reference. However,
When the flip-flop 66 is set as described above, its Q side output becomes "1" and the gate of the AND circuit 67 is opened. Therefore, the 1/2 Hz signal given from the frequency dividing circuit 2 is outputted from the AND circuit 67, and sent to the auxiliary counter 59 and the day of the week indicating counter 64, and the contents thereof are sequentially counted up. That is, the auxiliary counter 59 and the day of the week indication counter 6 are memory means for displaying the day of the week column designation display and the day of the week when the switch _S1 is operated.
is first based on Sunday and then every 2 seconds (1/2
Hz) is counted up sequentially in synchronization with The day of the week designation counter 64 stores column information indicating how many columns the column corresponding to the day of the week column designation display body sequentially displayed by the switch _S1 deviates from the reference day of the week column. Auxiliary counter 59 and day of the week indication counter 6
The output data of 4 is output to AND circuits 17 and 20, respectively.
added to. And this AND circuit 17, 2
The outputs of 0 are sent to decoder drivers 26 and 28 via OR circuits 24a and 24c, respectively.
This is displayed on the 10 seconds/day of the week reference display section 34 and the day of the week display section 35. In this case, the AND circuit 17,
20 is given a 2 Hz signal from the frequency dividing circuit 2, so the display is a flashing display with a 1/2 second cycle. On the other hand, since the day of the week reference data held in the auxiliary counter 54 is sent to the decoder/driver 26 via the AND circuit 18 and the OR circuit 24a, the day of the week reference is fixedly displayed. FIG. 8a shows a calendar for November, in which the Sunday column of the day of the week is shown by the continuous display of the display □5 of the day of the week reference display section 34 for 10 seconds, and the flashing display of the display □+ Therefore, the Monday column is shown. At this time, in the day of the week display section 35, the display element Mo for Monday is displayed flashing, indicating that the day of the week column of the display element □+ is Monday. Then, after 2 seconds, the flashing display in the 10 seconds/day of the week reference display section 34 and the day of the week display section 35 moves to the next display units □0 and Tu as shown in FIG. 8b, and the day of the week column of the display unit □0 Show that it is Tuesday. In this way, 10 seconds/day of the week reference display section 34 and day of the week display section 35
The flashing position in is sequentially moved every 2 seconds, and the day of the week indicated by the flashing is displayed.

When returning from the calendar display state to the normal time display state, the switch _S2 is closed again. When switch _S2 is operated, a one shot signal is output from the one shot circuit 41,
Flip-flop 44 and AND circuits 45, 46
added to. At this point, flip-flop 4
4 designates the AND circuit 45 by outputting a "1" signal from the Q side output terminal. As a result, the output of the one-shot circuit 41 is output from the AND circuit 45,
Clear the auxiliary counters 14, 54. after that,
The flip-flop 44 is inverted by the output of the one-shot circuit 41, and the output on the side becomes "1" and the output on the Q side becomes "0". Therefore, AND circuits 18, 23
At the same time as the gate of the inverter 47 is closed, the output of the inverter 47 becomes "1", the gates of the AND circuits 15 and 16 are opened, and the time display state is returned.

In the above embodiment, the reference day of the week column is lit and displayed, and the day of the week column is sequentially flashed and shifted based on this reference day of the week column position, and at the same time the corresponding day of the week display is flashed and shifted. It is also possible to shift the position without causing the shift. Further, although the above-mentioned shift operation is performed automatically, it may be shifted manually.

Furthermore, as shown in Figure 9 a and b, the day of the week standard □5
The day of the week display _S4 corresponding to (Sunday) may be displayed by lighting.

As described above, according to the present invention, there is a calendar display section in which date numerals from "1" to "31" are arranged in multiple columns according to a hexadecimal calendar table, and A calendar table for one month is displayed by displaying a day of the week column designation display body corresponding to a specific day of the week column according to month information. In the calendar display device, the day of the week indicators in columns other than the specific day of the week column are sequentially and selectively displayed using a switch means, and day information is displayed indicating which day of the week the column specified in the day of the week column designation indicator is. Since it is displayed using the day of the week display, even if the specific day of the week column changes depending on the month, you can clearly know what day of the week the columns other than the specific day of the week column are, or what day of the week an arbitrary day is. It is something that can be done.

[Brief explanation of the drawing]

1 to 8 show one embodiment of the present invention, in which FIG. 1 is a circuit diagram, FIG. 2 is a diagram showing a display format, and FIG. 3 is a diagram showing a normal time display state. Figure 4 is a diagram showing the date display state, Figure 5
The figure shows the calendar for the current month (November), Figure 6 shows the previous month's calendar, Figure 7 shows the next month's calendar, and Figures 8 a and b show the days of the week for each day column of the calendar. Diagram for explaining the operation, No. 9
Figures a and b are diagrams for explaining the day-of-the-week display operation for each day-of-the-week column of a calendar in another embodiment of the present invention. 5...Date counter, 11...Month counter, 1
4, 54, 59...Auxiliary counter, 26-29...
... Decoder driver, 31 ... Display device, 32
...Hour/minute/month/day display section, 33...Calendar table, 34...10 seconds/day of the week reference display section, 35...Day of the week display section, 48, 49...Delay circuit, 55...Day of the week reference counter , 64...Day of the week indication counter.

Claims (1)

[Claims] 1. In an electronic clock having electronic time counting means and day, month, and day of the week counting means for counting day, month, and day of the week information, the display is driven according to the day of the week information of the day of the week counting means to display the current day of the week. a day of the week display, a calendar display in which date numerals from "1" to "31" are arranged in a plurality of columns according to a seven-day calendar table; A plurality of day of the week column designation display bodies provided,
a specific day of the week column display driving means for supplying a display drive signal to a day of the week column designation display corresponding to the specific day of the week column of the current month according to the month information of the month counting means to clearly indicate the specific day of the week column; and the specific day of the week column display. A switch means for sequentially selecting and displaying day of the week column designation display bodies in columns other than the day of the week column designation display body driven to be displayed by the driving means, and corresponding to the day of the week column designation display body being driven to be displayed by the switch means. storage means for storing column information indicating how many columns the column is shifted from the specific day of the week column; and column information of the storage means in response to a signal indicating that the switch means selects a column other than the specific day of the week column. A calendar display device comprising means for supplying the day of the week information to the day of the week display instead of the corresponding day of the week information.