JPS6367157B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calendar information display method for displaying holidays for Sundays and public holidays in an electronic watch or a small electronic calculator having a calendar function.

BACKGROUND ART Small electronic devices having a timekeeping function, such as electronic watches or small electronic calculators with a timekeeping function, have been put into practical use so far that they are configured to obtain and display date information as an extension of the timekeeping function. Moreover, among the above-mentioned small electronic calculators, those equipped with a date calculation function have also been put into practical use, so that a predetermined number of days before or a predetermined number of days after an arbitrary date can be easily determined and displayed.

However, when an operator uses this type of small electronic device, he or she needs a one-month calendar for various schedules, etc. rather than the above-mentioned date information, and it is difficult to use the above-mentioned small electronic device to have a calendar. Although there are various types of devices that can be used to display images, they only display one month's calendar, and at most only display days that are Sundays.
No consideration was given to holidays, etc.

The present invention has been made in view of the above points, and is a small electronic device equipped with a timekeeping function, which includes a calendar display section for at least one month, and displays a predetermined display format with Sundays and public holidays of the month to be displayed as holidays. To provide a calendar information display method capable of displaying calendar information and displaying the next day as a holiday when a Sunday and a public holiday overlap.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the external appearance of a small electronic calculator that displays a calendar by implementing the present invention.A keyboard 2 and a display window 3 for displaying data are provided on the top surface of a case body 1. A display device 4 is provided inside. The keyboard 2 includes a numeric keypad for inputting numerical data, a function key for specifying calculation details, a "CAL" key for displaying a calendar, year, month, etc.
"DATE" key to enter the day or month,
It is provided with a ``SET'' key for setting another calendar different from the above calendar, and a ``REC'' key for reading the above other calendar from the memory.

The display device 4 is constructed using, for example, a liquid crystal display element, as shown in detail in FIG. It's summery. The data display section 5 includes, for example, 8-digit number display bodies 7 ₁ to 7 ₈ and character display bodies 8 a of "AM" and "PM" for displaying morning and afternoon, which are formed at the ends in the direction of the upper digits. , 8b. Further, in the calendar display section 6, 31 holiday display bodies 9 ₁ to 9 _{31 are formed in a row on one side, for example, the bottom side of the data display section 5, and 1 to 31 holiday display bodies 9 1 to 9 31} are formed in a row on the bottom side of each display body 9 ₁ to 9 ₃₁ . 31 date numbers are printed. In this case, mask electrodes 10a to 10c formed by liquid crystal elements are formed on the display bodies 929 to 931 corresponding to the numerical values " ₂₉ to ₃₁ ", and the display bodies ₉₂₉ to ₉₃₁ are selectively displayed depending on the size of the end of the month. It's starting to be masked.

FIGS. 3a and 3b show the electrode structure of the display device 4. FIG. 3a shows the structure of the first electrode, and FIG. 3b shows the structure of the second electrode. First, to explain the structure of the first electrode, that is, the segment electrode, each number display body 7 ₁ to 7 ₈ is a Japanese character segment electrode.
It consists of S ₁ to _{S 7} and a decimal point electrode S ₈ . Then, the segment electrodes S ₁ to _{S 7} of each number display body, the decimal point electrode S ₈ , and the character display bodies 8a and 8 of “AM” and “PM”
b, holiday display bodies 9 ₁ to 9 ₃₁ , mask electrode 10a
~10c is the external connection terminal a ₁ as shown in Figure 3a.
Connected to ~ _a9 , _b1 ~ _b9 , _c1 ~ _c9 , _d1 ~ _d8 .

A second electrode, that is, a common electrode, shown in FIG. 3B, is formed on the back surface of each segment electrode shown in FIG. 3A. The Japanese character electrodes for each digit of the number display bodies 7 ₁ to 7 ₈ are divided into two common electrodes T ₁ and T ₂ , respectively. 1 so as to correspond to the holiday display bodies 9 ₁ to 9 ₃₁ and the mask electrodes 10 a to 10 c.
Two common electrodes _T9 are formed. Thus, one common electrode _T1 of each number display body ₇₁ to ₇₈ and the common electrode of the character display body 8a of "AM" are connected to the external connection terminal X at once. In addition, the common electrodes of the other common electrode _T2 of the number display bodies ₇₁ to ₇₈ , the decimal point common electrode _T3 , and the character display body 8b of "PM" are collectively connected to the external connection terminal Y. ₄ is connected to external connection terminal Z.

Next, the circuit configuration of the present invention will be explained with reference to FIG. Reference numeral 21 denotes a reference frequency oscillator for creating a time clock and operation clocks for each section.The output of this oscillator 21 is sent to a timing signal generator 22 and also to a frequency divider 23. This frequency divider 23 divides the frequency of the signal from the oscillator 21 to obtain a 0.5 second signal and a 1 second signal. ROM
(Read-only memory) address section (ROMA) 2
6. The one second signal output from the frequency divider 23 is input to the ROM address section 26 via the latch circuit 27. The above latch circuit 2
5 and 27 are reset by a signal from the instruction decoder 28. Further, the timing signal generating section 22 generates three-phase timing signals _t1 to _t3 and various other timing signals based on the signal given from the oscillator 21, and the timing signals are sent to the instruction decoder. 28 and each circuit. The ROM address section 26 specifies the address of the ROM 29 that stores various control programs, and the ROM address section 26 includes signals from the frequency divider 23 as well as key operation signals from the keyboard 2. , judgment signals J _L , J _H from the judgment unit described later
etc. are input as address data, and
Next address (not shown) and
A jump address V is input from the ROM 29 or a RAM (random access memory) 30 which will be described later. The above ROM29 has output lines 29a to 2
9d, row address data is output from the output line 29a, and this address data causes RAM (random access memory)
The operation register and the operand register within 30 are specified. The RAM 30 is composed of, for example, arithmetic registers, A to D registers, S registers, T registers, X to Z registers, timekeeping related registers, and separate calendar memory registers M ₁ to _{M o} as shown in FIG. 5, for example. Then, Sundays are in the A register, holidays are in the B register, another calendar created arbitrarily is in the C register, today and the calculation result date are in the D register, the year, month, day is in the X register, and the Y register is is the number of days from the standard and the day to erase at the end of the month, Z
Calendar display data is stored in each register. Further, the S register and the T register are used for temporarily storing calculation data.

RAM30 composed of the above various registers
is the output line 29 of the ROM29 as described above.
A predetermined register is designated by the row address output from a, and the column address of this designated register is given by the column address controller 31. This column address controller 31
operates according to the column address or start and end column addresses given from the ROM 29 via the output line 29c, and this column address controller 31 supplies column address control signals to the RAM 30 and the read control circuit 32. Also,
A numerical code or address data is output from the output line 29b of the ROM 29, and a jump address V is supplied to the ROM address section 26, and a numerical code is supplied to the arithmetic section 34 via the selector 33. Furthermore, the above ROM
Various instructions are outputted from the output line 29d of 29 and sent to the instruction decoder 28. This instruction decoder 28 decodes various instructions given from the ROM 29, including read/write commands R/W, data display commands D, calendar display commands C, various calculation commands OP, display timing signal generation commands CD, It outputs a reset signal to the latch circuits 25 and 27, an indirect address control signal I, etc. The read/write command R/W output from the instruction decoder 28 is sent to the RAM 30 to instruct reading or writing. RAM3
When a read command is given to 0 and data is read from the internal register, the read data is sent to the arithmetic unit 34 via the selector 33 and subjected to appropriate arithmetic processing. The output of this arithmetic circuit 34 is
It is input to the RAM 30 as write data and is also input to the row address designation terminal of the RAM 30 via the address buffer 35 for indirect address (note that this address buffer 35 receives the indirect address control signal from the instruction decoder 28). When I is output, a read operation is performed and the output is input to the row address designation terminal of the RAM 30). The output of the arithmetic unit 34 is judged by a judgment unit 36 as to whether there is data or carry.
The judgment outputs J _L and J _H are sent to the ROM address section 26 . Further, the output of the arithmetic unit 34 is converted into a segment signal via a display decoder 37 and a segment encoder 38, which is once set in display data buffers 39 ₁ to 39 ₈ and then transferred to a combinational logic circuit 40. The above display decoder 37
In addition to the display data being decoded, the decimal point data is also decoded, temporarily stored in the decimal point buffer 41, and transferred to the combinational logic circuit 40. Furthermore, among the information output from the arithmetic unit 34,
After the calendar information is temporarily stored in the buffer register 42, it is stored in the buffer register 43 ₁ to 4 for calendar information.
₃₉ to the combinational logic circuit 40.
The display data buffer circuit 39 and the calendar information buffer circuit 43 are connected to the read control circuit 3.
It operates according to a control signal from 2, and the details will be described later. Then, the combinational logic circuit 4
The output of 0 is sent to the driver 44, and the above-mentioned display device 4 is driven by this driver 44.
The combinational logic circuit 40 and the display device 4 operate according to X, Y, and Z timing signals or drive signals output from the second electrode drive circuit 45.
The second electrode drive circuit 45 starts its operation upon receiving the operation start signal CD from the instruction decoder 28.

Next, details of the read control circuit 32, display data buffers 39 ₁ to 39 ₈ , calendar information buffers 43 ₁ to 43 ₉ , and combinational logic circuit 40 will be explained with reference to FIG. The read control circuit 32 is
A decoder 51 that decodes address data sent from the column address controller 31, and an AND circuit 5 provided on the output side of this decoder 51.
It consists of 2 ₁ to 52 ₈ and 53 ₁ to 53 ₉ . The AND circuits 52 ₁ to 52 ₈ receive a clock pulse φ ₁ and an instruction decoder 28 .
A data display command D is applied from the decoder 51.
Timing signals φ _D0 to φ _D7 for reading display data are sequentially outputted from AND circuits 52 ₁ to 52 ₈ in accordance with the outputs of . Further, a calendar display command C is applied from the instruction decoder 28 together with the clock pulse φ ₁ to the AND circuits 53 ₁ to 53 ₉ , and according to the output of the decoder 51 , the AND circuits 53 ₁ to 53 ₉ provide timing for reading calendar information. Signals φ _C0 to φ _C8 are output in sequence.

The timing signals _φC0 to _φC8 outputted from the AND circuits ₅₃₁ to ₅₃₉ are sent as read signals to the calendar information buffers ₄₃₁ to ₄₃₉ . The calendar information buffers 43 ₁ to 43 ₉ are 43 ₈ ,
The second stage of ₄₃₉ is 3 bits, and all others are 4 bits.
It has a bit configuration and has a buffer of 43 ₁ to 43 _8.
each bit corresponds to the holiday indicator 9 ₁ to 9 ₃₁ ,
Holiday data is set via a 4-bit buffer 42. Also, Batsuhua 43 ₉ is "29",
Mask data is set via the buffer 42 corresponding to the mask electrodes 10a to 10c on days "30" and "31". In addition, the AND circuit 52 ₁
~52 Timing signal φ _D0 ~φ _D7 output from ₈
is sent as a data read signal to the display data buffers 39 ₁ to 39 ₈ . The display data buffers 39 ₁ to 39 ₈ each have a 7-bit configuration, and are connected to the segment electrodes from the segment decoder 38.
Signals for S ₁ -S ₇ are provided.

Then, the display data buffers 39 ₁ to 3
9 ₈ and the outputs of calendar information buffers 43 ₁ to 43 ₉ are sent to a combinational logic circuit 40 . This combinational logic circuit 40 is constituted by a transfer gate, and the X, Y,
The transfer gate is controlled to open and close by the Z timing signal, and the display data buffer 39 ₁
~39 ₈ or calendar information buffer 43 ₁ ~
The output of ₄₃₉ is selected and output as a signal to each connection terminal a ₁ to _{a 9} , b ₁ to b ₉ , c ₁ to c ₉ , d ₁ to _{d 8} of the display device 4, and sent to the driver 44. . That is, in the combinational logic circuit 40, as is clear from the electrode configuration diagram in FIG. 3, the output _a1 is connected to the 31st holiday display electrode decimal point electrode _S8 and the segment _S1 . The lighting timing is 31
The day/holiday indicator ₉₃₁ is Z, the decimal point electrode _S8 is Y, and the segment _S1 is X. The combinational logic circuit 40 of FIG. 6 is based on this relationship, and the output of the buffer 39 ₁ corresponding to the segment S ₁ is
A transfer gate that opens at X timing,
In addition, there is a buffer 4 that stores 31 holiday display signals.
The outputs of 3 _{and 8} are wired-ORed through the transfer gates of Z timing, respectively, and when "1" is stored in the corresponding bit of the buffer ₃₉₁ or ₄₃₈ , "1" is sent to _a1 at the X or Z timing. ``signal is output, and the driver 44 converts it into a predetermined drive signal and applies it to the terminal _a1 of the display device 4. In addition, in FIG. 6, the decimal point is omitted. Similarly, the output b ₁ is the mask electrode 10 on the 31st.
c, and are connected to segments S ₂ and S ₃ , and these are designed to be lit at Z, X, and Y timings, respectively. Therefore, the combinational logic circuit 40 is provided with transfer gates based on the above relationship. Thereafter, transfer gates are provided for each output in the same manner.

Next, the operation of the present invention configured as described above will be explained with reference to the flowchart shown in FIG. When the power is turned on, as shown in step A in Figure 7,
Under the control of the ROM 29, the display and key sampling state is first entered, and the presence or absence of key input is constantly checked. On the other hand, the reference frequency signal outputted from the oscillator 21 is frequency-divided by a frequency divider 23 into a signal with a period of one second, and is inputted to the ROM address section 26 via the latch circuit 27. As a result, the ROM address unit 26 specifies a new address in the ROM 29, and the time measurement process shown in step B is performed. When this time counting process is performed, a reset signal is output from the instruction decoder 28 and the latch circuit 27 is reset. In the timekeeping process of step B, the current time data stored in the timekeeping register in the RAM 30 is read out, the second data is incremented by 1 in the arithmetic unit 34, and the data is read out from the RAM 30 again.
Store it as 0. That is, in the above calculation, the output line 29a of the ROM 29 is connected to the RAM 3.
A row address for specifying a clocking register in the clocking-related registers of 0 is specified, and a column address is output from the output line 29c of the ROM 29, and the column address is given to the RAM 30 via the column address controller 31. At this time, the instruction decoder 28 gives a read instruction R to the RAM 30. As a result, the contents of the time register, that is, the time data specified by the column address, are read out from the ROM 30 and sent to the arithmetic unit 34 via the selector 33.
sent to. Reading from the RAM 30 is as follows:
This is performed at the timing t ₁ or t ₂ output from the timing signal generator 22 . Also, above
At the timing when the second data is read from the RAM 30, a code signal with the numerical value "1" is output from the output line 29b of the ROM 29, and is sent to the calculation unit 34 via the selector 33, where the calculation of "second data + 1" is performed. . The result of the calculation performed by the calculation unit 34 is judged by the judgment unit 36, and when the second time reaches 60 seconds due to the above +1 second operation, the judgment outputs J _L and J _H of the judgment unit 36 are determined. Then, the next address of the ROM 29 is specified, and according to the control command output from the ROM 29 at this time, a carry process to minute data is carried out, and further a carry process to hour data is carried out according to the minute data at that time. +1 in the above calculation unit 34
The counted time data is sent to the RAM 30 again and is output from the timing signal generator 22 _.
It is written to the clock register in the RAM 30 at the timing of . When writing this data, ROM29
A row address specifying the time register and a column address specifying the digit thereof are provided to the RAM 30, and a write command W is also provided from the instruction decoder 28. In addition, when the above-mentioned time counting process is performed, the presence or absence of a daily change signal is determined based on the output of the determining unit 36, and if the daily change signal is not output, the step A of the display and key sampling is performed.
Return to However, if the daily signal is output,
Proceed to step C to process year, month, and day counts, and ROM
In accordance with the control command from 29, the year, month, day, day storage registers in the timekeeping related registers of the RAM 30 are changed to the year, month, day, day of the week, etc., and day of the week switching processing is performed, and then the process returns to step A above. . Note that the year, month, and day storage registers in the timekeeping-related registers store date data in the form of the number of days from a virtual reference date (described later) to the present day (the formula for calculating this number of days will be described later).

In step A of this display and key sampling, the calendar, date, time, key input data, calculation results, etc. are displayed according to the display mode at that time, and the presence or absence of key input is determined, and the presence or absence of key input is determined. When a key is pressed, the process jumps to the processing step corresponding to that operation key. In other words, “0
If the numeric keypad “~9” is operated, go to step D.
The program jumps to step A, performs number entry processing according to the key input, and then returns to step A.

If a function key is operated, the program jumps to step E, performs arithmetic operations such as arithmetic operations, date calculations, etc. in accordance with the contents of the operated key, and then returns to step A. If the date is calculated in step E, the process proceeds to a calendar processing step which will be described in detail later.

When the "SET" key for setting another calendar is operated, the process jumps to step F, sets another calendar in the other calendar memory, and returns to step A.

If the "REC" key is operated to display another calendar, the process jumps to step G, reads the stored contents from the other calendar memory, and then returns to step A.

When the "DATE" key is operated to input date data, the process jumps to step H, and it is determined whether or not there is a numeric value. If there is no numeric value, the process advances to step H. In other words, when you proceed to this step, only the "DATE" key has been operated, so in order to display today's calendar, the number of days stored in the year, month, and day memory registers in the above-mentioned timekeeping registers must be Days register (Y register)
After that, proceed to the calendar processing step, which will be described in detail later. If it is determined in step H that a number has been entered, the program proceeds to step J and determines whether or not the "DATE" key has been operated for the third time. If the "DATE" key has not been pressed for the third time, proceed to step K and input the date data of the year, month, and day (input to the X register).
Return to step A. Also, change the date data to year,
When the month and day have all been entered and the "DATE" key has been pressed three times, the determination result in step J becomes YES, and the process proceeds to a calendar-related processing step, which will be described later, to display a calendar.

When the "CAL" key for displaying a calendar is operated, it is determined in step L whether or not the "DATE" key has been operated. When displaying a calendar, specify the year and month of the calendar to be displayed using the numeric keypad and the "DATE" key, so if the "DATE" key is not operated before the "CAL" key, the "CAL" key operation is treated as a no-function and returns to step A.
If the ``DATE'' key is operated before the ``CAL'' key, the program moves to the first step of holiday display, and first proceeds to step M, where the X register in the RAM 30 is set to ``1'' as day data. At this time, data specifying the year and month of the calendar to be displayed is set in the X register by the first key operation.
In other words, the present embodiment is configured such that by inputting only the year and month data, the calendar for the month can be displayed. When this step M is completed, the process then proceeds to step N, in which the date set in the X register is converted into the number of days from the virtual reference date to the specified date, and the converted date is set in the Y register. If it is determined in step J that the "DATE" key has been operated for the third time, the process also proceeds to step N. When the process of step N is completed, the process proceeds to step O, where the number of days set in the Y register is again converted into year, month, and day. Further, if the date is calculated in step E, or if the number of days from the virtual reference date to today is set in the Y register in step E, the process also proceeds to step O. The above steps N and O are for correcting data when impossible date data is input, such as when calculating the number of days. For example, if February 29th is specified in a normal year, the date is corrected to March 1st by performing the processing in steps N and O above. When this series of processing is completed, the process proceeds to step P, in which the specified day is subtracted from the number of days stored in the Y register to find the number of days (from the standard) in the specified month. Add 1 day to the result. Next step Q
Go to and set the Sunday of the specified month. That is, the number of days determined in step P is first divided by the numerical value "7" and the day of the week is determined based on the remainder. for example
In the case of February 1, 1978, if Sunday to Saturday are assigned as numbers from 0 to 6, the remainder is 3, and the day of the week on February 1 is Wednesday. is calculated. On the other hand, in the 32-bit A register for Sunday storage provided in the RAM 30, "1" is set in advance for every 7 bits with the least significant bit as a reference, and the contents are shifted in accordance with the day of the week data obtained earlier. If February 1st falls on a Wednesday as described above, either shift the contents of the A register downward by the number of bits of the value ``3'' indicated on Wednesday, or by the number of bits of ``7-3''. Shift upward. In this case, each bit of the A register corresponds to a holiday indicator 9 ₁ to 9 ₃₁ based on the lower bit, and 7
The "1" signal stored for each bit is transferred to the Z register, and the holiday indicators 9 ₁ to 9 ₃₁ are selectively driven to display, thereby indicating the position of Sunday. Next, the program proceeds to the holiday set flow R, where the holiday is set in the B register in the RAM 30, and the set data is transferred to the Z register, and the holiday display bodies ₉₁ to 9 are transferred to the Z register.
₃₁ is driven to display, and holidays are displayed. The details of this flow R will be described later. Next, the process advances to another calendar set flow S to perform another calendar setting process. When the process of the above separate calendar set flow S is completed, proceed to step T and press "CAL".
It is determined whether or not the key has been pressed. If the "CAL" key has been pressed, the day data (stored in the ) and return to step A. If the "CAL" key has not been pressed, proceed to step V, set calendar information for today or the display date of the calculation result, that is, the positions of holiday indicators ₉₁ to ₉₃₁ , in register D, and return to step A. .

Next, details of the holiday set flow R will be explained with reference to FIG. First, processing for detecting a leap year is performed using the RA flow. That is,
The first step RA ₁ transfers the last two digits of the year data stored in the 6th and 7th digits of the X register, X ₆ and ₇ , to the 6th and 7th digits of the T register for temporary storage.
Then _, in step RA ₂ , the value <sub>`</sub> `4'' is placed in the 6th digit S ₆ of the S register for temporary storage. Next, proceed to step RA ₃ and register 6 of the T register.
Subtract the value "4" set in the S register from the 7th and 7th digits T ₆ and ₇ . This subtraction operation is repeated as long as the subtraction result is positive, and when the subtraction result becomes a negative number (detected by the judgment section 36), the process proceeds to the next step _RA4 . In this step _RA4 , the content "4" of the S register is added to the _T6 , _7th digit of the T register, which has become a negative number, and the amount that has become negative is corrected by the subtraction operation in step _RA3 . Above flow
The contents of the T register obtained by RA become leap year judgment data and are used in the flow described later.

When the process of the above flow RA is completed, the process moves to steps RB and RC, which is the second step of holiday display. First, proceed to flow RB and perform address branch processing according to the monthly data. First, in step RB ₁ , the 4th digit of the X register that stores the year, month, and day.
It is determined whether the contents of _X4 , that is, the contents of the upper digits of the month data storage section, are "0". In other words, if the upper digit of the month data is not "0", the month is "10-12",
If it is "0", it is determined that the month is "1-9".
If it is determined in step RB ₁ that the upper data of the month is "0", the process advances to step RB ₂ , and the content of the third digit _X3 of the X register, that is, the data of the lower digit of the month, is transferred to the ROM address section 26. and branches addresses A to I for January to September. If it is determined in step RB ₁ that the upper month data is not "0", the process advances to step RB ₃ , where the lower month data stored in the _3rd digit of the X register and the numerical value "1" are combined. 10-12 month is determined based on the size relationship. In other words, if the data of X ₃ is less than "1", it is October,
If it is equal to "1", it is determined that it is November, and if it is greater than "1", it is determined that it is December, and branches to addresses J, K, and L, respectively.

Next, according to the address branched by the flow RB, the flow RC for setting public holidays for the designated month is entered.
Currently, public holidays in Japan are set as shown in Figure 9, with New Year's Day on January 1st and Coming of Age Day on January 15th in January. Therefore, in the January holiday setting flow, first, as shown in step RC ₁ , write "1" (0001) to the _B0 digit (first digit) of the B register that stores holidays, and set the holiday for New Year's Day. Set. This B register and each other register have 4 bits per digit.
By writing "1" (0001) to the least significant digit _B0 of the B register, "1" is set to the least significant bit. In the above B register, each bit corresponds to the holiday indicator 9 ₁ to 9 ₃₁ in order from the lowest digit, and when the lowest bit of the B register is set to "1", the data is transferred to the Z register. Accordingly, the day off display body ₉₁ is driven to display. Next, the program proceeds to step _RC2 , where "4" (0100) is written in _{the B3} digit (4th digit) of the B register to set a public holiday for Coming of Age Day. "4" in _{the 3} digits of B above
When (0100) is written, "1" is written to the 3rd bit in that digit, that is, the 15th bit from the lowest bit of the B register, and the holiday indicator 9 corresponding to the 15th is written.
₁₅ is displayed.

In the February holiday setting flow, step RC ₃ sets "4" to the B _2nd digit (3rd digit) of the B register.
(0100) and set the 11th bit to “1”, and
Set National Foundation Day on the 11th of the month.

The vernal equinox day is a public holiday in March, but the vernal equinox day moves depending on the year, as shown in Figure 10. Additionally, there is the Autumnal Equinox Day, which changes from year to year. As can be seen from Figure 10, the vernal equinox mentioned above was on March 21st from 1924 to 1959 in the Western calendar, but from 1960 onwards.
Until now in 1978, once every four years, in March during leap years.
It falls on March 20th, and in other years it falls on March 21st. Therefore, assuming that this change every four years will continue in the future, we will set up the vernal equinox day processing flow RC ₄ in the March holiday setting flow, and the vernal equinox will be set on March 20th in leap years and March 21st in normal years. I am trying to set the day of the day. Note that the setting of the vernal equinox may not be set in advance as described above, but may be set by the operator each year, and the same applies to the autumnal equinox.

In the April holiday setting flow, step RC ₅ sets "1" to the B _7th digit (8th digit) of the B register.
Write (0001) and set the 29th bit to “1”, and
Set the Emperor's birthday on the 29th of the month.

In the May holiday setting flow, as shown in step RC ₆ , set "4" to the _B0 digit (1st digit) of the B register.
(0100) and set the 3rd bit to “1”, 5
Establish Constitution Day on the 3rd of each month. Next, proceed to step RC ₇ , write "1" (0001) to the B _1st digit (2nd digit) of the B register, set the 5th bit to "1", and set May 5th, Children's Day. do.

Since there are no holidays in June, July, August, and December, no holidays are set.

National holidays in September include Respect for the Aged Day on September 15th and Autumn Equinox Day, but the date of the Autumn Equinox changes depending on the year, as shown in Figure 10 above. As you can see from Figure 10, this autumnal equinox has been around since 1947.
Until now, in 1978, it has fallen on September 24th only once every four years, and on September 23rd in other years. Therefore, assuming that this change every four years will continue, the autumn equinox processing flow will be used in the September holiday setting flow.
RC ₈ is installed to handle this process. That is,
In this process flow RC ₈ , the specified year (Western calendar year) is divided by 4, the remainder is determined, and the autumnal equinox is set on September 23rd or September 24th. Then, when the above processing flow is completed, the program proceeds to step RC ₉ , writes "4" (0100) to the B _third digit (fourth digit) of the B register, and sets the 15th bit to "1". Set Respect for the Aged Day.

In the October holiday setting flow, step RC ₁₀ sets "2" to the B _2nd digit (3rd digit) of the B register.
(0010) and set the 10th bit to “1”, 10
Set a sports day on the 10th of each month.

In the flow for setting holidays in November, first step is
By RC ₁₁ , write "4" (0100) in the B ₀ digit (1st digit), set the 3rd bit to "1", and set November 3rd as Culture Day. Then proceed to step RC ₁₂ ,
Write "4" (0100) to the _B5 digit (6th digit) of the B register, set the 23rd bit to "1", and set November 23rd as Labor Thanksgiving Day.

After completing the holiday set flow (second step), the end of the month adjustment flow RD is entered. In February, after finishing the process of step RC ₃ , step in the adjustment flow RD at the end of the month
Proceeding to RD ₁ , it is determined whether the content of the sixth digit _T6 of the T register obtained in the flow of RA is "0", that is, whether the year is a leap year or a normal year. T
If the content of the _T6 digit of the register is "0", it is a leap year, and the program proceeds to step RD ₂ to write "6" (0110) into the _Y8 digit of the Y register, which stores the number of days and the day to be erased. In the Y ₈ digit of this Y register, the first to third bits are provided corresponding to the mask electrodes 10a, 10b, and 10c, and as described above, "6" (0110)
When written, the second and third bits become "1". As a result, the mask electrode 10
b and 10c are driven, the 30th and 31st dates are masked, and February in a leap year is displayed up to the 29th. If it is determined in step RD ₁ that it is a normal year, proceed to step RD ₃ and write "7" (0111) in the Y _8th digit of the Y register. As a result, Y
Bits 1 to 3 of the _Y8 digit of the register are set to "1", and the masking electrodes 10a to 10c are driven to mask the dates of the 29th, 30th, and 31st. Therefore, in a normal year, February will be displayed until the 28th.

In addition, if the end of the month is 30th in April, June, September, or November, the processing step for setting holidays or the
Proceeding from the flow of RB to step RD ₄ , "4" (0100) is written in the _Y8 digit of the Y register, and "1" is set in the third bit of that digit. As a result, the masking electrode 10c is driven, the date of the 31st is masked, and the end of the month is displayed as the 30th. After completing each of the steps RD ₂ , RD ₃ and RD ₄ , the process advances to step RD ₅ . Also, in flow RC, RC ₂ ,
If the processing of RC ₄ , RC ₇ , and RC ₁₀ is completed, or if the addresses of July, August, and December are branched in flow RB, the process also proceeds to step RD ₅ . In this step _RD5 , the contents of the _7th digit A of the A register storing Sunday and the contents of the _8th digit Y of the Y register are added and stored again in _{the 8th} digit Y of the Y register. That is,
OR the contents of the Y ₈ digit of the Y register, which stores the days to be erased, to the A ₇ digit of the A register, which stores Sundays for the 29th to 31st. In the case of this OR addition, the carry generated during the addition is discarded, and carry-over addition to the higher-order bits is not performed. The above step RD ₅ erases the days that the Sunday data for the 29th to 31st stored in the A _7th digit of the A register is on the 31st of a small month (the last day is the 30th). In _{the preprocessing} for
Delete unnecessary Sunday data by subtracting the contents of Y ₈ digits of the register.

The above steps complete the setting of Sunday, and then the third step of holiday display begins. First, in step _RE1 , the Sunday data stored in the A register is OR-added to the Z register for storing calendar information.
Next, the process advances to step _RE2 , and it is determined whether the display mode is for holidays. The above holiday display mode is set by key operation, and if you do not want to display holidays, the processing flow for Sunday setting and holiday setting ends here, but if you want to display holidays, proceed to step RE ₃ . B register contents and Z
Add the contents of the register and store the addition result in the Z register. When executing the process in step RE ₃ , Sunday has already been set in the Z register and holidays have been set in the B register, so by adding these, in the parts where holidays and Sundays do not overlap, each A "1" is set at the bit position of the two bits, and if they overlap, a "1" is written to the upper bit (the next day) by the carry. Next, the process proceeds to step _RE4 of the fourth process for displaying holidays, and this time the contents of the B register and the Z register are OR-added. In this step RE ₄ , the step RE ₃
At this point, the bit of the Z register which has become blank due to the carry going up to the upper bit is set to "1" by ORing the holiday set in the B register. RE ₃ and RE ₄ above
By executing the steps, Sunday data and holiday data are set in the Z register, and when a Sunday and a holiday overlap, holiday data is set in the next day's position. And this Z
Holiday indicator 9 ₁ ~ according to the register set contents
9 ₃₁ is driven to display, holiday display is performed for Sundays and public holidays, and when Sunday and public holidays overlap, holiday display is performed for the following day, that is, Monday.

Next, detailed operations for displaying a calendar will be explained with reference to FIGS. 11A and 11B. 1st
1A and 11B are state diagrams comparing each step after step L in FIG. 7 and the contents of each register when displaying the calendar for January 1978. To display the calendar for January 1978, as shown in Figure 11A,
"1""9""7""8""DATE""1""DATE"
Perform key operations in the order of "CAL". When January 1978 is designated by key operation, the date data "1978=01-00" is set in the X register.
When the "CAL" key is operated, the flow proceeds to a calendar display, and first, as shown in FIG. 7, in step L, it is determined whether or not the "DATE" key has been operated. In this case, since the "DATE" key has been operated, the determination result at step L is YES, and the process proceeds to step M, where "1" is set in the "day" storage digit of the X register. In other words, specify January 1st with this step M, then proceed to step N and set the date to 3rd year of the year 0.
Find "722406", the number of days from the virtual reference date of the month 1st to January 1st, 1978, and store it in the Y register. That is, in step N above, a=year, b=month,
If c=day, _{if b} ≧3 then a-1)] _cut + [30.6×(b+9)] _5/4 +C...The number of days X is calculated using the formula (2). In addition, in formulas (1) and (2) above, the first term cuts the number of operation results to the nearest whole number [5/4], and the second term rounds the number of operation results to the nearest whole number [5/4]. I have to. After finding the number of days in step N, proceed to step O, and use the reverse process of step N to find the year, month, and day from the number of days stored in the Y register. Set it in the X register again, and correct the input such as the impossible date as described above. Next, proceed to step P, and subtract the specified date from the number of days determined in step N, and further add "1" to determine the number of days in "one day."
That is, subtracting the designated day from the number of days found in step P yields the number of days on "0th" of the month, so "1" is added to it to obtain the number of days on "1st". In this processing, there is no change in the content since it is originally "1 day". Next, the program proceeds to step Q, where the Sunday of the designated month is set in the A register as explained in FIG. Since "1" is previously set in the A register every 7 bits with the lower bit as a reference, this set data is shifted in accordance with the day of the week data. Since the day of the week data for January 1, 1978 is Sunday "0", the contents of the A register are retained as they are.

Next, the process proceeds to processing flow R for setting holidays. In this processing flow R, first, in step RA ₁ , the value "78" of the last two digits of the year stored in the X register is transferred to the T ₆ and ₇ digits of the T register for temporary storage.
Next, in step RA ₂ , S ₆ of the S register for temporary storage is
Write "4" in the digit, and in step RA ₃ , change the contents of the S register from "78" in the T register to "4" in the S register.
Continue subtracting until the result is less than or equal to 0.
As a result of this subtraction, the contents of the T register become "-2" and the process proceeds to the next step RA ₄ , where the T register contains S
Add the register contents "4". As a result of this addition, the contents of the T register become "2". That is,
The amount subtracted too much in step RA ₃ is corrected in step RA ₄ so that the result falls between "0 and 3".

Next, proceed to step RB ₁ shown in FIG. 11B, and
Determine whether the upper digit of the month stored in the X ₄ digits of the register is "0". In the case of January, the upper digit is "0", so the judgment result of step RB ₁ is
YES, proceed to step RB ₂ and enter the lower digit of the month.
Sends the content “1” of X ₃ to the ROM address section 26,
Jump to the flow that specifies January. That is, in the case of January, proceed to step RC ₁ , write "1" (0001) to the _B0 digit (first digit) of the B register, set "1" to the first bit, and set the holiday for New Year's Day. Set. Next, proceed to step RC ₂ ,
Write "4" (0100) to the B _third digit (fourth digit) of the B register, set "1" to the 15th bit, and set the holiday for Coming of Age Day.

Once these processes are completed, proceed to step RD ₅ .
Proceed to , OR-add the A ₇ -digit content "1" (0001) of the A register that stores Sunday data and the Y ₈ -digit content "0" (0000) of the Y register, and the addition result is "1". ” (0001) to the A _7th digit of the A register. Next, in step RD ₆ , the A register is
Subtract the Y ₈ -digit content “0” (0000) of the Y register from the ₇ -digit A content “1” (0001), and write the subtraction result “1” (0001) again to the A _7- digit A register. .
As mentioned above, these steps RD ₅ and RD ₆ are for erasing Sunday data corresponding to the day to be erased such as the end of a small month or the end of February, etc.
Since this embodiment is for January, the contents of the A register are not changed in any way. Then step
Proceed to RE ₁ and OR add the Sunday data stored in the A register to the Z register. Next step
Proceed to RE ₂ and determine whether the mode is holiday display mode.
If it is the holiday mode, the process proceeds to step _RE3 , where the holiday data stored in the B register and the Sunday data stored in the Z register are added, and the result of the addition is stored in the Z register. This step
RE ₃ writes "1" to each bit position in the Z register when holidays and Sundays do not overlap, and when they do, "1" is written to the upper bit (the next day) by the carry. It will be done. i.e. 1978
In January 2017, New Year's Day and Coming of Age Day on January 15th coincide with Sunday, so the 1st and 15th bits of the Z register are blank, and the 2nd and 16th bits above the 1st bit are blank. “1” is written to the bit. Next, the process proceeds to step _RE4 , where the contents of the B register and the Z register are OR-added. In this step RE ₄ , the holiday data in the B register is OR-added to the 1st and 15th bits of the Z register, which became blank due to the carry going up to the upper bits in step RE ₃ , to set them to "1".
Set. As described above, Sunday data and holiday data are set in the Z register, and when a Sunday and a holiday overlap, holiday data is set in the next day's position.

When the holiday set flow R is completed, another calendar set flow S (omitted) is executed, and the process further advances to step T, where it is determined whether or not the "CAL" key has been operated. In this case, since "CAL" is key operated, proceed to step U, blank the day, and change the contents of the X register to "78".
-01” and return to step A. Then, in this step A, the data display section 5 is displayed as shown in FIG.
``78-01'' indicating January 1978 is displayed, and Sundays and holidays of January 1978 are displayed on the calendar display section 6. In this case, in January 1978, as mentioned above, New Year's Day and Coming of Age Day on January 15 overlap with the day of the week, so the holiday indicator 9 ₁ , which indicates Sunday,
Holiday indicators 9 ₂ , 9 ₁₆ along with 9 ₈ , 9 ₁₅ , 9 ₂₂ , 9 ₂₉
is displayed, and the 2nd and 16th, which are Mondays, are displayed as holidays.

In the explanation of the above operation, the microprogram to be stored in the ROM 29 used in this embodiment was described and explained in the form of a flowchart following the order of its operation. The instruction decoder 28, column address controller 31, etc. respond under the control of the ROM 29 in which the microprogram corresponding to the instruction is stored.
It will be understood by those skilled in the art that the operation of each circuit such as the arithmetic section 34 and the judgment section 36 results in the register states as shown in FIGS. 11A and 11B, and also the display state as shown in FIG. It would be easy to understand.

In addition, in the above embodiment, "1" for the date -
The numbers up to "31" are printed and displayed, but other numbers as shown in Figure 13 are printed and displayed.
A "31" display electrode may be provided to display the date using a liquid crystal display element. in this case,
The display electrodes "1" to "28" are collectively driven for display by the signal input from the external connection terminal _d9 , and the display electrodes "29"
The display electrodes 31 to 31 are selectively driven for display by signals input from the external connection terminals b ₂ , d ₁ , and b ₁ to make the last date of the month correspond to the designated month.

Further, in the above embodiment, the date display is displayed in one horizontal row, but in other cases, for example, the date display is displayed in one horizontal row.
As shown in FIGS. 4a and 4b, it is of course possible to use a matrix-like calendar structure similar to the Seven Days Table currently in common use. Figure 14a above
14b shows an example where the date order is set in the horizontal direction, and FIG. 14b shows an example where the date order is set in the vertical direction.

In addition, in the above embodiment, holidays are indicated by lighting up the display body indicating holidays, but holidays can also be displayed by flashing, and Sundays and holidays can be displayed separately. It is also possible to separately display Sundays and public holidays by different displays, for example by changing the flashing interval. Furthermore, in the case of the one shown in FIG. 13, it is also possible to make the date display itself flash.

As described above, according to the present invention, in a small electronic device equipped with a calendar function, by processing each step of holiday display described above, it is possible to display holidays other than Sunday as holidays on the calendar, as well as Sundays. If holidays overlap, the next day can be displayed as a holiday.
In other words, it is possible to display a calendar that is exactly the same as the actual calendar, and is therefore extremely effective when making various plans such as meetings and travel. In addition, it has a storage capacity of at least ``31'' bits, which corresponds to one month's worth of dates from ``1'' to ``31'', and stores Sunday information in the corresponding bits. The first
This register can be calculated simply by adding the carry signal obtained by adding each bit of the register and a second register having the same storage capacity and storing holiday information in the corresponding bits to the upper bits, so it can be calculated using a simple circuit. It can be calculated in a short time with the configuration.

[Brief explanation of drawings]

1 to 12 show one embodiment of the present invention, in which FIG. 1 is an external perspective view, FIG. 2 is a front view showing details of the display device, and FIGS. 3a and 3b are the display device. 4 is a block diagram showing the overall circuit configuration, FIG. 5 is a diagram showing the configuration of the RAM register in FIG. 4, and FIG.
The figure is a circuit configuration diagram showing details of the read control circuit, display data buffer, calendar information buffer, and combinational logic circuit in FIG. 4, and FIG. 7 is a flowchart showing the operation contents corresponding to each operation key.
Figure 8 is a flowchart showing detailed operations for setting holidays, Figure 9 is a diagram showing holidays in Japan, and Figure 10 is past data on the vernal equinox and autumnal equinox in Japan. Figures 11A and 11
Figure B is a state diagram that compares the processing steps and the contents of each register when displaying a calendar for January 1978, Figure 12 is a diagram showing an example of a calendar display on a display device, and Figure 13 is a diagram showing an example of displaying a calendar of the present invention. Figures 14a and 14b are diagrams showing an example of the calendar configuration in another embodiment of the present invention. 2...keyboard, 3...display window, 4...display device,
5...Data display section, 6...Calendar display section, 9 ₁ ~
9 ₃₁ ... Holiday display body, 10a to 10c... Mask electrode, 21... Oscillator, 26... ROM address section, 2
9...ROM (read only memory), 30...RAM
(random access memory), 39 ₁ - 39 ₈ ... buffer for display data, 43 ₁ - 43 ₉ ... buffer for calendar information.

Claims (1)

[Claims] The first and second registers have a storage capacity of at least 31 bits corresponding to one month's worth of dates, and Sunday information and holiday information are written in the respective registers. A calendar display method for a small electronic device that displays holidays includes a first step of writing Sunday information determined from the day of the week calculation result of the first day of the calendar display month into the first register, and holiday information specific to the calendar display month. a second step of writing the above into the second register, and adding together the bits corresponding to each date in the first and second register obtained in each of the above steps,
It has a third step of writing the carry signal resulting from the addition into the bit corresponding to the upper date, and a fourth step of ORing the addition result obtained in the third step and the contents of the second register. A calendar information display method characterized by displaying the next day as a holiday when a Sunday and a public holiday overlap.