JPS6236560B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a time and date data input device that allows you to easily confirm whether input data is a time or a date when inputting the time or date by operating a predetermined key. In conventional electronic watches and small electronic calculators with a clock function, the current time and date can be set by operating predetermined keys such as a numeric keypad when replacing batteries or the like. The conventional method for setting the time and date on this type of small electronic device is to alternately operate the numeric keypad and the key for specifying the time or date, but this method requires a large number of key operations. Therefore, the applicant should not file a patent application.
A simple setting method was provided as 54-76589.
In this method, only the numeric data of time or date is entered continuously, the number of digits of the number is determined, and the number is input as time or date data. This invention is a further improvement on the above-mentioned set method, and its purpose is to determine whether the current input data is time data or date data when setting numerical data of time or date. It is an object of the present invention to provide a time and date data input device that enables confirmation of the date and time. An embodiment in which the present invention is applied to a small electronic calculator with a clock function will be described below with reference to the drawings.
FIG. 1 is a circuit diagram of the computer. In addition to the numeric keypad 2 and function key 3 that are normally provided on a calculator, the key input section 1 has three different modes for this calculator (time and date set mode:
SET, calculation mode: CAL, time mode: TM) mode changeover switch 4, and a set key used in conjunction with the numeric keypad 2 to set the time and date on the calculator.

[Formula] 5, time display key

[Formula] 6, AM/PM designation key

[Formula] 7, date display key

[Formula] 8 etc. are provided respectively. The key operation signal from the key input section 2 is applied to a ROM (read only memory) address section 9, whereby address data with predetermined contents is outputted from the ROM address section 9 to the ROM 10. The ROM10 controls various operations of this computer, stores its control program, and also executes microinstructions UA, LA, CODE, INS, and NA according to the address data mentioned above.
are output in parallel. Microinstruction UA, LA
are data specifying a row address and a column address of a RAM (random access memory) 11, respectively, and the microinstruction LA is also given to a 4-bit buffer register 12 when specifying the set mode. The microinstruction INS is various instruction signals output to the instruction decoder 13, and the microinstruction NA is the ROM address section 9.
This is the next address designation signal output for the next address.
Further, the microinstruction CODE is a numerical code signal and is output to the calculation unit 14. RAM11
is composed of various registers such as an X register, a Y register, a Z register, etc., including an arithmetic register for executing various arithmetic operations by the arithmetic unit 14, a display register, a date register for storing date data, and a register for storing the current time. It is used as a timekeeping register, etc. The registers of the RAM 11 and their digits are selected by the microinstructions UA and LA, and data reading and writing are controlled by the signal /W output from the instruction decoder 13. The data subjected to the calculation in the calculation unit 14 is stored again in a predetermined register in the RAM 11. Further, data to be displayed read out from the RAM 11 is given to a buffer register 15 having a 4-bit configuration. The instruction decoder 13 decodes the microinstruction INS and outputs the signal R/W as well as the signal R/W mentioned above.
Generates various control signals such as SET, AM, PM, etc. and applies them to each circuit. The instruction decoder 13 is driven by various timing signals from the timing signal generator 16 to execute the above decoding operation. Further, the above-mentioned timing signal is also given to each other circuit, and the timing of each circuit is controlled. The arithmetic unit 14 executes the four arithmetic operations and logical operations necessary for normal calculations of the computer, and stores the operation results in the RAM.
Give to 11. In addition, the calculation result J of the jersey calculation
is given to the ROM address section 9, which causes
The ROM address section 9 performs OR addition of the microinstruction NA from the ROM 10 and the above operation result J, and outputs the next address data to the ROM 10. Furthermore, the calculation unit 14 also executes a timekeeping calculation for calculating a new current time once every second. in this case,
A signal of 1 sec is output from the timing signal generating section 16 once every second and is applied to the ROM address section 9. As a result, the ROM address section 9 generates address data specifying the address of the timing flow in the ROM 10. Therefore, the calculation unit 14 includes a RAM 11.
Since the current time data read from the clock register in the internal clock is input, the calculation unit 14 adds 1 second to this current time data to obtain new current time data, and also uses the result of the calculation to clock the clock. The data is transferred to the register to prepare for the next time measurement calculation that will occur one second later, and the execution of the flow before starting the time measurement flow is resumed. Further, during the above-mentioned timekeeping flow, an operation for updating the date data is also performed, which is adding to the date data stored in the date register according to the contents of the timekeeping register. In addition, when the time and date set mode is specified, the calculation unit 14 performs a difference calculation to determine whether the input data is time data or date data.
It also executes calculations to calculate time data or date data to be displayed from input data. By the way, the time data (hours, minutes) input using the numeric keypad 2 is 4-digit data, and the date data (year, month, day) is 6-digit data, so when the set key 5 is operated after setting the number, the calculation is Part 14 is
The digits of the input data are calculated, and a comparison operation is performed between this number of input digits and the number of digits set above (4 digits or 6 digits), and if it is determined to be time data, the input data is input to the time register. On the other hand, if the input data is determined to be date data, the input data is input to the date register. Next, the configuration of the display control section for displaying on the display section 17 will be explained. The data read from the display register in the RAM 11 is sequentially input to the buffer register 15 digit by digit, and is applied to the display decoder 19 via the decoder 18. The display decoder 19 converts the input data into segment data that can be displayed on the data display section 17A in which each digit is constituted by a liquid crystal display segment, outputs the converted data as serial data, and supplies it to the shift register 20. When serial data corresponding to the capacity is input to the shift register 20, the data is simultaneously input to the shift register 20.
The data is read from 0 and read into the display buffer 21 as parallel data, which is then applied to the liquid crystal drive circuit in the display section 17, which dynamically drives the corresponding liquid crystal segment of the data display section 17A. The data will be displayed. When the time display key 6 is operated, the contents of the time register are transferred to the display register, and the current time is displayed on the data display section 17A. Also, when the mode changeover switch 4 is set to the time mode, the current time is displayed in the same manner as above. When the date display key 8 is operated, the contents of the date register are transferred to the display register, and date data is displayed. On the other hand, the microinstruction LA input to the buffer register 12 when specifying the set mode is sent to the decoder 1.
Decoded by 8. This decoder 18 receives microinstructions input to the buffer register 12.
When LA is data "0101" representing the fifth digit and the display data input to the buffer register 15 is data "1111" indicating a blanking code, the signal S (binary logic level "1") is output as a decode output. ”), and when the microinstruction LA input to the buffer register 12 is data “0001” indicating the first digit, a signal R (“1”) is output as a decode output. There is.
The signals S and R are from the RS type flip-flop 22.
The flip-flop 22 is set or reset by being input to the set input terminal S or the reset input terminal R of the flip-flop 22, respectively. Further, the set side output signal of the flip-flop 22 is applied to an AND gate 23. The signal SET from the instruction coder 13 is input to this AND gate 23.
SET is a signal output as "1" while the computer is in the time/date setting mode SET. Further, the output of the AND gate 23 is given to AND gates 24 and 25 as gate control signals, and the signal AM from the instruction decoder 13 is also input to the AND gate 24. The signal PM from the instruction decoder 13 is input to the input signal PM. Here, the signal AM is a signal that is output as "1" when the content of the flag in the clock register indicates "am" while the current time is displayed and when the time/date set mode is specified.
The signal PM is a signal that is output as "1" when the contents of the flag digit of the time register indicate "afternoon". Here, the contents of the flag digit are inverted between "am" and "pm" each time the AM/PM key 7 is operated when the set mode is specified. Also, the timing register is cleared when the battery is replaced.
In this case, the flag digit is also cleared, and its contents indicate "am". The output of the AND gate 24 is applied to the liquid crystal drive circuit of the AM display AM via the OR gate 26, and controls the lighting and extinguishing operations of the AM display AM. On the other hand, the output of the AND gate 25 is applied to the liquid crystal drive circuit of the PM display PM via the OR gate 27, and controls the lighting and extinguishing operations of the PM display PM. The signal SET is also applied to AND gates 29 and 30 via an inverter 28, respectively. The AND gate 29 is further supplied with a signal AM, and the AND gate 30 is supplied with a signal PM. The output of the AND gate 29 is given to the liquid crystal drive circuit of the AM display AM via the OR gate 26, and the output of the AND gate 30 is given to the liquid crystal drive circuit of the PM display PM via the OR gate 27. ing. Therefore, while the current time is displayed in a mode other than the set mode, the signal AM or signal PM is output depending on the contents of the flag digit of the clock register, and the AND gates 29 and 30 and the OR gates 26 and 27 are output. Either the morning display AM or the afternoon display PM is displayed through the display. Next, the operation of the above embodiment will be explained with reference to FIG. When setting the time or date, first set the mode changeover switch 4 to the time/date setting mode. As a result, the instruction decoder 13 outputs the signal SET as "1", so the AND gate 23
is opened, and AND gates 29 and 30 are closed. Next, by operating the numeric keypad 2, only the numerical data of the time or date is input in sequence. In this case, the arithmetic unit 14 performs a counting operation for the number of times the number is entered for each numeric operation, and stores the counted value in a predetermined register in the PAM 11, Alternatively, a difference calculation is also performed to determine whether the date data matches the set number of 6 digits. For example, when the numerical value "8" is input for the first time, this numerical data "8" is output from the ROM 10 as a microinstruction CODE, inputted to the first digit of the display register in the RAM 11 via the arithmetic unit 14, and , the above count value becomes "1", and a mismatch with each set number of digits is detected.
Further, the data input to the display register is then read out and read into the buffer register 15, and is further transferred to the display unit 17 via the decoder 18, display decoder 19, shift register 20, and display buffer 21.
and displayed on the data display section 17A. By the way, when the numerical data "8" is input and stored in the display register, the contents of the display register will be "8"("1000") only in the first digit, and a blanking code will be stored in the other digits. "1111" is memorized. As mentioned above, when each digit of the display register is sequentially specified by the microinstruction LA in order to display the data in this display register, the numerical data "0001" specifying the first digit is When output from the ROM 10 as the instruction LA, this data "0001" is also given to the buffer register 12. Therefore, this data "0001" is decoded by the decoder 18,
Signal R is output as "1". Therefore, the flip-flop 22 is reset, the set output becomes "0", and the AND gate 23 is closed.
Therefore, AND gates 24 and 25 are also closed. Next, the second and subsequent digits of the display register are specified and displayed sequentially by the microinstruction LA, but when the microinstruction LA becomes "0101" that specifies the fifth digit, the display stored in this fifth digit is displayed. Since the data is a blanking code, the signal S is output from the decoder 18 as "1". Therefore, flip-flop 22 is set, and its set output opens AND gates 23, 24, and 25, respectively. Therefore, the signal AM or signal PM that has been output from the instruction decoder 13 since the set mode is designated is sent to the display section 17 via the OR gate 26 or 27. If the flag digit of the time register now indicates AM, a signal AM is sent to the display section 17, and the numbers "8" and "AM" are displayed as shown in FIG. 2A. By inputting numerical data sequentially like this,
During numerical input up to 4 digits, a blanking code "1111" is stored in the 5th digit of the display register. In other words, when displaying numbers up to 4 digits, the first digit is displayed and the flip-flop 2 is displayed.
2 is reset and set at the display of the fifth digit, the signal AM is sent to the display section 17 via the AND gate 24 and the OR gate 26 at this interval. Therefore, the display status during numerical input up to 4 digits is as shown in Figure 2 A to D.
AM will be displayed, and the user will be able to recognize that the four-digit numerical data is time data. After entering the 4-digit numerical data,
When the set key 5 is operated, the arithmetic unit 17 detects a match with the four-digit set number of digits of the time data, and the ROM
Based on the control of 10, the stored contents of the display register are converted into time data and input to the time register. Furthermore, if numerical data of five or more digits is input, the contents of the fifth digit of the display register will be data other than the blanking code, so the decoder 18 will send the signal S.
is not output and the flip-flop 22 always remains reset. Therefore, the AND gates 23, 24, and 25 are closed, and as shown in FIG.
AM or PM is not displayed as in F. Therefore, when numerical data of 5 or more digits is input, the display section 17 will no longer display the AM indicator AM or the PM indicator, and the user will be able to confirm that the numeric value of 5 digits or more that is currently being input is date data. becomes recognizable. When the set key 5 is operated after inputting 6-digit numerical data, the arithmetic unit 17 detects that the date data matches the set number of 6-digit digits, and based on the control of the ROM 10,
The contents stored in the display register are converted into date data and input into the date register. In addition, in the above embodiment, the distinction between time data and date data can be visually confirmed by controlling the lighting and extinguishing operations of the AM/PM indicators AM and PA that are normally provided in clock devices. In this way, it can be realized at low cost without providing a special display body, but of course, another display body may also be used or a special display body may be provided.
Control of turning on and off the display body may be performed by a microprogram built into the ROM 10. Furthermore, in addition to the above-mentioned visual confirmation method, an auditory confirmation method in which different types of voices, musical tones, etc. are emitted may be used. We have provided a time and date data input device that allows you to confirm whether input data is time or date data when inputting time or date.
When entering time or date, you can easily check the type of data you are entering, so you can avoid data entry mistakes such as entering time data as date data or date data as time data. This can be easily prevented.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment in which the present invention is applied to an electronic desktop calculator with a clock function, and FIG. 2 is a diagram showing the key operation procedure and display state when setting date data. 1...Key input section, 2...Numeric keypad, 4...Mode switching key, 5...Set key, 6...Time key, 7...AM/PM key, 8...Date key, 1
0...ROM, 11...RAM, 14...calculation section,
17...Display unit, 18...Decoder, 22...Flip-flop, AM...AM display, PM...
Afternoon display.

Claims (1)

[Claims] 1. Key input means for inputting time or date data, means for counting the number of input digits of the input time data or date data, and the number of input digits counted by the counting means. means for comparing the number of digits set in advance for each of the time data and date data; time data storage means for storing the input time data; and date data for storing the input date data. storage means; storing the input data in the time data storage means when the input data matches a preset number of digits preset for the time data in the comparison means; storage control means for storing the input data in the date data storage means when the input data matches a set number of digits; a display means for indicating whether the input data is time data or date data; a display control means for controlling driving of the display means according to a comparison result of the comparison means, and a time of day characterized in that the input data is distinguished as time data or date data by driving the display means; Date data input device.