JPS6249942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device having a timekeeping function that sets time information by operating a predetermined key.

2. Description of the Related Art Some conventional electronic watches and small electronic calculators with a clock function allow the user to set the current time by operating a predetermined key, such as a numeric keypad, when replacing a battery or the like. In this case, for example, to set 1:23 as the current time, □1 TM □2
□3 Numeric keypad, TM key, SET like TM SET
Perform key operations. In addition, if the device has a separate clock function that allows you to input a time that differs only in the hour digits from the current time, such as the time in a country with a time difference, after entering the value in the hour digits as a different time using the numeric keypad, TM, Use keys such as DUAL and SET to set a different time. As described above, the conventional time setting method is complicated in that the key operations are different depending on the current time and the time of a different clock, the number of key operations is large, and a key for specifying the different clock is required.

This invention was made in view of the above points,
The object of the present invention is to provide an electronic device having a timekeeping function that allows the time to be set reliably with a small number of key operations when setting the time.

Hereinafter, an embodiment applied to an electronic timepiece having a timepiece function according to the invention will be described with reference to the drawings. In FIG. 1, 1 is a key input section, and this key input section 1 is equipped with a mode switch 1a, a set key 1b, a numeric keypad, and a decimal point key 1c. The mode switch 1a above is set to SET mode, TIME mode,
This is used to switch the DUAL mode. SET mode is the mode to set when setting the current time or another time, TIME mode is the mode to set when displaying the current time, and DUAL mode is when setting the current time. This is the mode to be set to. Key operation signals input from the key input unit 1 are input to a control unit 2 that controls various operations, and numerical data input from the key input unit 1 is input to an input processing circuit 3. A one-second period clock signal obtained by frequency-dividing the reference frequency signal generated from the oscillator 4 by the frequency divider 5 and various timing signals generated from the timing signal generation circuit 6 are sent to the control unit 2.
The control unit 2 executes a predetermined control operation based on these clock signals and timing signals.

The register section 7 consists of A register, B register, and C register consisting of a 12-digit shift register with each digit consisting of 4 bits.
It has registers D to N. The A register temporarily stores the number of inputs, the number of decimal places, and display data, and the numerical data output from the key input section 1 is sent to the input processing circuit 3 and the gate circuit _G1.
or the data to be displayed out of the calculation result data of the adder circuit 8 is input to the gate circuit.
Input via _G1 . As shown in FIG. 2, the A register stores the number of inputs in the first digit, the decimal point digit in the second digit, and numerical data in the third to 12th digits. The number of entered numbers is obtained by counting the number of digits by the adder circuit 8 when the ten key 1c is operated and a series of numerical data (time) is input. The decimal point digit indicates the decimal point position based on the operation of the decimal point key 1c.
is used as a PM set key to indicate the afternoon.
When the data input to the A register is output from the A register, it is input again to the A register via the gate circuit _G1 and is held in circulation. Also A
The data to be displayed in the register is sent to the display processing circuit 9.
After being sent to the computer and subjected to predetermined processing, it is displayed on the display section 10. Furthermore, the data in the A register is sent to the adder circuit 8 via the selector 11, and a predetermined operation described later is executed. The calculation results are gate circuit G ₁ , gate circuit G ₂ , gate circuit
G ₃ , the corresponding A via either gate circuit G ₄
The signals are input to the register, B register, C register, and D to N registers, respectively. For this reason, the gate circuit
The opening and closing of G ₁ to _{G 4} are both controlled by control signals from the control section 2 . Further, the selector 11 also performs a selection operation to select and output data from any one of registers A to N to the adder circuit 8 in response to a control signal from the control unit 2. Furthermore, the adder circuit 8 also executes calculations on data input via the selector 11 based on command signals such as addition commands and subtraction commands from the control section 2. In this case, the adder circuit 8 performs calculations for calculating the number of inputs when the time is input, calculations for calculating time data to be displayed from the key data input to the A register, and the clock signal. Each time the value is input to the control section, an operation such as adding "+1" to the seconds digit of the timekeeping register is executed as a timekeeping operation.

The B register is a register provided to store current time data input as 3-digit or 4-digit numerical data, and as shown in Figure 2, the 12th digit is AM/PM data, and the 8th and 7th digits are AM/PM data. to time data,
Minute data is stored in the 6th and 5th digits, and second data is stored in the 4th and 3rd digits. For AM/PM data, if the decimal point key is operated during time input, PM will be specified and input as "1", and if the decimal point key is not operated, AM will be specified and input as "0". be.

The C register is a register provided for storing separate time data input as one-digit or two-digit numerical data, and has the same configuration as the B register described above, as shown in FIG. Further, the D to N registers are registers provided in large numbers for calculations. The input data of the B register, C register, and D to N registers are cyclically held in the illustrated circulation circuit and sent to the adder circuit 8 by the selection operation of the selector 11.

When the set key 1b is operated after the current time or another time value is input, the data in the A register is sent to the AND gate 12 via the selector 11 and the adder circuit 8 as serial data. The AND gate 12 is controlled to open and close by a control signal a output from the control unit 2 as a "1" signal when the number of inputs stored in the first digit of the data from the A register is sent. Ru. The number of times the number passed through the AND gate 12 is input to a 4-bit shift register 13. Furthermore, the number of entered numbers stored in the shift register 13 is decoded by a decoder 14 consisting of a gate circuit, and when the content is "3" or "4", a "1" signal is output from the output line _l1 or _l2 , respectively. The signal is output and input to the set input terminal S of the RS type flip-flop 16 via the OR gate 15a. When the content of the number of inputs is "1" or "2", a "1" signal is output from the output line _l3 or _l4 and inputted to the set input terminal S of the RS type flip-flop 17 via the OR gate 15b. Each set output signal of the flip-flops 16 and 17 is input as a gate control signal to the gate circuit _G2 or _G3 , respectively, so that when the content of the set number is "3" or "4", the A register is inputted. The data in the A register and the B register are input to the C register at a timing to be described later when the content of the number of inputs is "1" or "2".
A control signal output from the control section 2 is input to each reset input terminal R of the flip-flops 16 and 17, so that the flip-flops 16 and 17 are reset.

Next, a part of the circuit configuration of the selector 11 will be explained in the third section.
This will be explained using figures. In the figure, control signals c and d are part of the control signals output from the control section 2, and signal b is the output signal of the flip-flop 17. The data output from the A register is input to an AND gate 18 which is opened and closed by a control signal c. Furthermore, the control signal c is input to an inverter 19 and an AND gate 20, and the output of this inverter 19 is input to an AND gate 21. The output signals of the AND gate 18 and the AND gate 21 are sent to a 2-digit shift register 2 via an OR gate 22.
3 is input. The output signal of this shift register 23 is input to an AND gate 24, and
It is input to the AND gate 21, and when the control signal c is "0", it is cyclically held. A control signal d is input to the AND gate 20 via an inverter 25. The output signal of this AND gate 20 is inputted to an AND gate 24 together with the shift register 23 and signal b. Further, the control signal d is input to the AND gate 26 together with the output data from the B register and the signal b, and the output signals of the AND gate 24 and the AND gate 26 are sent to the adder circuit 8 via the OR gate 27.

Next, the operation of this embodiment configured as described above will be explained with reference to FIGS. 4 to 6. First, when setting the current time by inputting, for example, "1:23 a.m.", press mode switch 1a.
Set to SET mode. At this time, the flip-flops 16 and 17 are reset by the control section 2,
Next, operate the numeric keypad 1c to enter the numerical data “1”,
Input "2" and "3" in sequence. In this case, numerical data output every time the numeric keypad 1c is operated is inputted into the 8th to 12th digits of the A register via the input processing circuit 3 and the gate circuit _G1 . Further, each time the numeric keypad 1c is operated, the adder circuit 8 executes a +1 operation on the first digit of the A register, and the number of inputs is counted. Furthermore, the numerical data input to the A register is cyclically held, sent to the display processing circuit 9, processed, and displayed on the display section 13. When you finish inputting the time value for the current time "1:23 a.m." in this way, the first digit of the A register will contain the number of times "3" and the second digit will contain "0" indicating the decimal point.
However, numerical data "123" is stored in the 3rd to 12th digits as shown in FIGS. 4A to 4B, respectively. Next, when the set key 1b is operated, an operation is executed to transfer the data of the second and higher digits of the A register to the B register for storing current time data. In this case, the data in the A register is transferred to the selector 11,
The control signal a of the "1" signal is input to the AND gate 12 via the adder circuit 8, and while the first digit of the data is being input to the AND gate 12, the control signal a of the "1" signal is
It is output from. Therefore, the number of numbers set above is “3”
is output from the AND gate 12, input to the shift register 13, and further decoded by the decoder 14. Then, a "1" signal is outputted from the output line _l1 and inputted to the set input terminal S of the flip-flop 16 via the OR gate 15a. Therefore, the flip-flop 16 is set, and its set output signal becomes a "1" signal and is sent to the gate circuit _G2 . As a result, numerical data "1230" is stored in the second to fifth digits of the B register as shown in FIG. 4A-B. Next, the adder circuit 8 executes an operation to convert this numerical data "1230" into time data "1:23:00 AM". As a result, as shown in FIG. 4A-C, numerical data "12300" is stored in the third to seventh digits of the B register, and data "0" indicating the morning is stored in the 12th digit. Then, the time counting operation is started from the contents of this B register. Next, the adder circuit 8 executes an operation of converting the numerical data "12300" and "0" into display data and inputting the data to the A register. As a result, as shown in FIG. is the current time "1:23 a.m."
is displayed. The flip-flop 16 is then reset by a control signal from the control section 2.

Next, the operation when setting "10:15 pm" as the current time will be explained. First, Figure 4B-
As shown in b, operate the numeric keypad 1c to input the numerical data "1" and "0", then operate the decimal point key 1c to input "afternoon", then operate the numeric keypad 1c again to input the numerical data. Input data "1" and "5". In this case, the number of numbers entered is counted for each operation of the numeric keypad 1c and stored in the first digit of the A register. As a result, after inputting the time value of the current time "10:15 p.m.", the first digit of the A register is the number of times "4" is placed, the second digit is "2" indicating the decimal point, 3...
Numerical data "1015" is stored in the 12th digit. Next, when the set key 1b is operated, the data in the A register is transferred to the selector 11 and the adder circuit 8.
is sent to the AND gate 12 via. and 1
Control signal a of “1” signal when inputting digit data
is output and the AND gate 12 is opened, and as a result, the number of digits "4" is input to the shift register 13 and stored, and then input to the decoder 14 and decoded. As a result, a "1" signal is output from the output line _l2 of the decoder 14, and the OR gate 15
The signal is inputted to the set input terminal S of the flip-flop 17 via a. Therefore, flip-flop 1
7 is set, and the gate circuit _G2 is opened by the set output signal. As a result, Figure 4B
- As shown in B, numerical data "10152" is input into the 2nd to 6th digits of the B register and stored. Next, convert this numerical data “10152” to time data “PM
10:15'' is executed, and as a result, as shown in FIG.
The numerical data “101500” is stored in the 8th digit, and
Numerical data "1" representing afternoon is stored in the 12th digit. Then, the time counting operation is started from the contents of this B register. Next, these numerical data "101500" and "1" are converted to display data and A
input to the register. As a result, display data "10-15-00" and "1" are stored in the 3rd to 10th and 12th digits of the A register, as shown in Figure 4B-D.
The current time "10:15 PM" is displayed on the display unit 10. The flip-flop 17 is then reset.

Next, the case of setting a time with a time difference from the current time, that is, a different time, will be explained. Assume that the current time is "4:12:30 a.m." and that "41230" is stored in the 3rd to 7th digits in the B register as shown in Figure 5 A-B, and the timekeeping operation is being executed. . Therefore, for example, when setting a different time when only the time digit differs from the current time (2 o'clock), the mode switch 1a is first set to the SET mode. At this time, flip-flops 16 and 17 are reset. Then, in the key input section 1, the user operates the numeric keypad 1c to input the numerical value "2" containing only the time digit. In this state, as shown in Figure 5 A-B,
The first digit of the register stores the number of inputs "1", the second digit stores "0" indicating the decimal point, and the third to 12th digits store numerical data "2". Next, when the set key 1b is operated, the first digit data "1" in the A register is transferred to the shift register 13 as described above when the control signal a is output.
and is further decoded by the decoder 14. Then, a "1" signal is outputted from the output line _l3 and inputted to the set input terminal S of the flip-flop 17 via the OR gate 15b. Therefore, the flip-flop 17 is set and the gate circuit
A “1” signal is sent to _G3 . The control signal a is output at the timing of the digital signal _D2 shown in FIG. The digital signals D ₁ to _{D 12} shown in FIG. 6 indicate the timing at which the stored contents of the 1st to 12th digits are output from each register to the selector 11.
Since there is a delay time of one digit due to the adder circuit 8, the control signal a is output at the timing _D2 . On the other hand, the control signal c output from the control unit 2 to the selector 11 is D ₃ , D ₄ , D ₇ ,
The timing of _D8 , the control signal d becomes a binary logic level "1" signal at the timing of _D3 to _D6 and _D12 (see Figure 6), and the control signal d becomes a binary logic level "1" signal at the timing of D3 to D6 and D12 (see Figure 6). When the stored contents of the digits, that is, the time data of minutes and seconds, and the data "1230" and "0" indicating AM are output from the B register, they are sent to the adder circuit 8 via the AND gate 26 and the OR gate 27, and are now sent to the flip-flop. It is input to the C register via the gate circuit _G3 selected by the set output of No.17.
Also, at the timing of D ₃ and D ₄ , the AND gate 18 is opened by the control signal c, and the contents of the 3rd and 4th digits of the A register output at this time, that is, the data of the time digit set as a different time, are opened by the AND gate 18.
8. Shift register 23 via OR gate 22
has been entered. Then, at timings D ₅ and D ₆ , the AND gate 18 is closed, the AND gate 21 is opened, and the contents of the shift register 23 are cyclically held. Next, at the timing of D ₇ and D ₈ , the control signal c becomes “1” and the control signal d becomes “0”.
Therefore, the contents of the shift register 23 are sent to the adder circuit 8 via the AND gate 24 and the OR gate 27, and similarly input to the C register via the gate circuit _G3 . Therefore, as shown in Figure 5A-C, the C register contains the 3rd to 7th digits and 12
"21230" and "0" are stored in the digits as separate time data and data indicating AM, and timekeeping operation is started. Next, this data is sent to the A register as described above (FIG. 5, A-D), and another time "2:12:30 a.m." is displayed on the display section 10.

Also, if the time digit is 2 digits (10 o'clock), □1,
□Operate the 0 and SET keys to perform substantially the same operation as described above, but in this case, the output line _l4 becomes "1". The contents of each register are shown in Figure 5 B-A.
The display section 10 shows "10 am
"Hour 12 minutes 30 seconds" is displayed.

In this way, when setting the current time and the time of another clock, simply input the numerical value of the time data using the numeric keypad 1c and operate the set key 1b.
For 3-digit and 4-digit numbers, the current time, 1 digit and 2 digit
When a digit is entered, a separate time is automatically set in each timekeeping register and timekeeping operation is started.

In the above embodiment, the number of inputs when inputting the time and date is controlled by a decoder, a flip-flop, etc., but it may also be controlled by a microprogram in the control section. Further, although the present invention is applied to an electronic watch in the above embodiment, the present invention can also be applied to similar types of devices such as an electronic calculator with a clock function and an electronic cash register.

As explained above, in an electronic device that measures multiple times with time differences, the present invention counts the number of input digits of input time data, and depending on the counted value, inputs time data or inputs only the time difference. Since the time difference is differentiated between the two, it is possible to set times having a time difference, thereby making it possible to obtain effects such as easier key operation and a reduction in the number of keys than in the past.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram of an embodiment of the present invention, FIG. 2 is a register configuration diagram of the embodiment, FIG. 3 is a partially detailed diagram of the selector 11 of the embodiment, and FIGS. 4 and 5. 6 is a diagram showing the operating procedure and storage state of the register in the same embodiment, and FIG. 6 is a timing chart for explaining the timing of the same embodiment. DESCRIPTION OF SYMBOLS 1... Key input section, 2... Control section, 7... Register section, 8... Adder circuit, 11... Selector, 14... Decoder, 16, 17... Flip-flop.

Claims (1)

[Claims] 1. In an electronic device having a function of measuring a plurality of times having time differences, a first time storage means for storing first time data, and a second time data having a time difference from the first time data. a second time storage means for inputting time data, a key input means for inputting time data, an input data storage means for storing time data input from the key input means, and a second time storage means for storing time data input from the key input means; A counting means for counting the number of input digits, a digit number determining means for determining the number of input digits from the count value of this counting means, and when it is determined by the digit number determining means that the counting means has counted three or more digits. a first time data setting means for setting the input time data stored in the input data storage means into the first time storage means; and a determination by the digit number determination means that the counting means has counted two or more digits. a data reading means for reading time data other than the time data from the first time storage means; and a data reading means for reading out time data other than the time data from the first time storage means; 1. An electronic device having a timekeeping function, comprising second time data setting means for inserting data as data and setting it in the second time storage means.