JPH0760189B2 - Stopwatch device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a stopwatch device.

[Prior art and its problems] Conventionally, in a stopwatch device, a lap captured between the start and the stop of the time measurement operation,
A stopwatch device with a memory is known in which measured times including splits are sequentially stored in a memory. And this kind of thing is premised on recording one measurement data, the next measurement start,
This is done after clearing all the contents of the memory where the measurement data of this time is recorded.

By the way, in sports such as land and swimming where there is a strong competition in terms of superiority and inferiority, the comparison between the previous recording time and the current recording time is one of the most important information for the practitioner. Therefore, it is conceivable that the measurement data for a plurality of times is sequentially recorded and held in the memory and the measurement data is switched and displayed as needed. In this case, at the end of this measurement, even if it is desired to immediately know the finish time or lap time measured this time, the contents of the memory must be sequentially switched and displayed from the beginning by a switch operation, which makes the switch operation troublesome and complicated. Becomes

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to easily and immediately know the data measured this time at the end of this measurement, and An object of the present invention is to provide a stopwatch device that can perform a recall efficiently and according to an actual application.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention stores a plurality of pieces of measured time information, reads all the time information in the clear state of the stopwatch, and measures this time in the stop state. The gist is that the time information is read and displayed.

[Embodiment] The present invention will be specifically described below based on an embodiment shown in the drawings. Note that this embodiment is applied to an electronic wrist watch with a stopwatch, and a case where it is used for jogging will be described as an example.

Structure Fig. 1 is an external view of this electronic wrist watch. Reference numeral 1 in the figure denotes a liquid crystal display panel provided on the front surface of the watch case. Further, a total of six push-button switches S1 to S6 are provided, two on each of the front, right, and left sides of the watch case. Here, the switch S1 is a basic mode switching switch for switching to the basic timepiece mode, the stopwatch mode, and other functional modes, and the switches S2 to S6 are switches used as various functional switches in the stopwatch mode.

The liquid crystal display panel 1 is constructed as shown in FIG.
The liquid crystal display panel 1 is a segment type panel, and when the display screen is roughly classified, it has an upper display section 2, a middle display section 3, and a lower display section 4 as divided by broken lines in the figure. Here, the upper display section 2 has 6 digits, the middle display section 3 has 4 digits, and the lower display section 4 has 8 digits. The upper display section 2 and the middle display section 3 are numbers or alphabetic characters, and the lower display section 4 is a number. Is displayed. The upper display unit 2 is provided with an alarm on-mark display body 2-1 and a plus / minus display body 2-2 at the left end thereof. As will be described later in detail, the plus / minus display body 2-2 indicates and displays whether the time difference between the measured lap time and the preset target value is positive or negative. Further, the middle display section 3 has a lap display body 3-1 at the left end thereof indicating that the measurement data displayed on the upper display section 2 is a lap type, and a stop display body 3-2 indicating a stop state of the measurement operation. A split display body 3-3 indicating that the measurement data displayed on the lower display unit 4 is split time is provided. Further, the lower display section 4 has a recording mode indicator 4 showing a recording mode state in which measurement data can be recorded.
In addition to -1, a display body is provided to display a 24-hour system in the afternoon.

FIG. 3 is a basic block circuit diagram of this electronic wrist watch.
This electronic wrist watch operates according to a micro program control method.

The reference clock signal of, for example, 32 KHz, which is constantly output from the oscillator circuit 11, is divided by the first divider circuit 12 to 512 Hz,
It is given to the second frequency dividing circuit 13. This second frequency dividing circuit 13
Outputs the carry signal a and the operation decoder
In order to get the time information of the basic clock by giving it to 15
The time counting process is performed once every 1/16 second, and once every 1/100 second while the stopwatch is operating. Further, the 512 Hz signal in the first frequency dividing circuit 12 is given to the timing generator 14. The timing generator 14 outputs timing signals to various circuits.
It is given to the operation decoder 15, the input unit 16, the ROM (read only memory) 17, the address unit 18, and the like. The operation decoder 15 receives the carry presence signal a from the second frequency dividing circuit 13 and the key presence signal b from the input section 16.
The HALT release signal c is output and given to the timing generator 4. That is, when the time counting process or the key input process is completed, the operation section 15 outputs an operation stop signal to the timing generator 14, which will be described later. The input section 16 outputs the switch input signal corresponding to the operation switch, and the switch input signal is the multiplexer 19. The key presence signal b is output by the operation of any of the switches and is given to the operation decoder 15, whereby the switch processing program corresponding to the operation switch of the ROM 17 is addressed and the switch processing is performed. To be executed.

The ROM 17 stores a microprogram that controls all the operations of this electronic wristwatch, and the microinstructions ADDR, DO, NA, OP
Are output in parallel. The microinstruction ADDR is input to the RAM (random access memory) 20 as address data and also to the display unit 21. Further, the micro instruction DO is input to the multiplexer 19 as a numerical code. The multiplexer 19 includes data from the input unit 16 and a second frequency dividing circuit.
The contents of 13 and the output data of RAM20 are also input,
The number of operations and the number of operands are switched and output at various processing timings and given to the operation unit 22 and the temporary register 23.
In this case, the data held in the temporary register 23 is given to the arithmetic unit 22 in synchronization with the output data of the multiplexer 19. The microinstruction NA is input to the address unit 18 as next address data for reading various microinstructions necessary for the next processing, and the output of the address unit 18 is given to the ROM 17. Further, the micro instruction OP is data input to the operation decoder 15.

The arithmetic unit 22 executes a switch process, a clock process, etc., and the resulting data is input to the address unit 18 and the RAM 20. Here, the address unit 18 converts the address of the ROM 17 by executing the judgment operation in the operation unit 22. Further, the data read into the RAM 20 is read at each processing timing and input to the multiplexer 19,
It is input to the display unit 21.

The operation decoder 15 decodes the micro instruction OP, outputs various control signals, and supplies them to the input unit 16, address unit 18, multiplexer 19, arithmetic unit 22, temporary register 23 and the like. Although not shown, this electronic timepiece is provided with a buzzer drive circuit for alarm generation.

Next, the configuration of the RAM 20 will be described with reference to FIG. RAM20 stores the current time, measured time, etc.
The clock register Y ₀ stores the current time and date data. In addition, the measurement time of the stopwatch predicted this time is stored in the measurement register Y ₁ . And this RAM2
In 0, 30 data memories X _{0 to} X ₂₉ are provided. The data memories X _{0 to} X ₂₉ sequentially store measurement data in the order of measurement, and each measurement data is stored corresponding to date data. That is, in the memory map of FIG. 4, the measurement time “19 minutes 28 seconds 36” is stored in the data memory X ₀ in correspondence with the date “May 17, 1985”. In this case, the code “0” stored between the date data and the measurement data is an identification code indicating that this measurement data is the measurement time from start to stop.
In addition, the data “1” stored on the right side of the measurement data
Is data indicating the number of measurements on that day. Similarly, the data memory X ₁ stores the measurement data “20 minutes 13 seconds 02” together with the date data “May 18, 1985”, and that this measurement data is the measurement time from start to stop. The identification code “0” and the measurement count data “1” of the day are stored. In this case, when a measure three times lap type, with each lap is stored sequentially in data memory X ₂ to X _4, the data indicating the lap type measurement number "1", "2", "3 Is stored in the corresponding memory. Further, the RAM 20 is provided with a target value setting memory PS in which a preset lap type target value is stored. This target value setting memory PS is capable of storing a plurality of target values, and flags "1" and "0" indicating alarm on / off are set corresponding to each target value. The alarm on / off flag specifies whether or not to generate an alarm when the measured lap time reaches the target value.

Further, the RAM 20 has various mode registers M, L, N,
O, P, Q, R, S, T, U, V, W are provided. Here, the function of each mode register will be described.

Mode register M The mode register M is a mode register that specifies the basic mode. When the content is M = 1, the basic clock mode, M
= 2, the stopwatch mode is designated, and when M = 3, another function mode is designated.

Mode register L When the content of the mode register L is "1", the reset mode indicating the reset state (clear state) before the stopwatch measurement operation is started in the stopwatch mode is designated.

Mode register N data memory X ₀ ~X ₂₉ of RAM20 in the stopwatch mode when the contents of the mode register N is "1"
Specifies the all data recall mode in which all the measurement data stored in are sequentially read and displayed.

Mode register O When the content of this mode register O is "1", the target time display mode for displaying the target time set in the target value setting memory PS of the RAM 20 during the measurement operation in the stopwatch mode is designated.

Mode register P When the content of the mode register P is "1", the present data recall mode for sequentially reading and displaying the present measurement data recorded in the RAM 20 in the stopwatch mode is designated.

Mode register Q When the content of this mode register Q is "1", in the stopwatch mode the target value setting memory PS of RAM20
Specify the target value setting mode for presetting the target value of the lap time.

Mode Register R When the content of the mode register R is "1", the lap display mode for performing the lap measurement in the stopwatch mode is designated.

Mode Register S When the content of the mode register S is "1", the lap measurement mode in which the lap time is displayed during the measurement operation in the lap display mode is designated.

Mode register T When the content of the mode register T is "1", the lap stop mode for stopping the lap measurement operation in the lap display mode is designated.

Mode Register U When the content of the mode register U is "1", the time difference display mode for displaying the time difference between the lap time obtained in the lap stop mode and the preset target time is designated.

Mode Register V When the content of this mode register V is "1", in the reset mode of the stopwatch, the stopwatch measurement mode in which the measurement time is displayed during the measurement operation of the stopwatch is designated.

Mode register W When the content of the mode register W is "1", the stopwatch stop mode for stopping the measurement operation in the stopwatch measurement mode is designated.

The RAM 20 also has a pointer X _n for the data memories X _{0 to} X ₂₉ , a clock register Y ₀ , a pointer Y _{n for the} measurement register Y ₁ , an empty address register Z ₀ that stores the address data of the empty area of the RAM 20, and the current measurement. The current start address register A ₀ in which the address data in which the first measurement data that started is stored is stored, the mode counter B that specifies various display modes, and the 5 second counter C ₀ used for the auto return function.
Is provided.

Overview of Overall Operation FIG. 5 is a general flowchart showing an overview of the overall operation of this electronic timepiece. Step T1 when power is turned on
Then, it will be in a standby state (HALT state) until there is a timing timing or a key input request. Now, at the timing timing, the process proceeds to step T2, and after the timing processing is executed,
The stopwatch process (step T3) is executed. When the key code corresponding to the operation key is output from the input unit 16, a key program corresponding to the key code is designated (step T4) and key processing is performed (step T5).

Stopwatch Processing FIG. 6 is a flowchart showing the specific contents of the stopwatch processing shown in FIG. First, when entering this flow, the presence or absence of a carry of 100 Hz is checked in step T11. As a result, if no carry is detected, the process jumps to step T27 (display processing), but if carry is detected, , The contents of the mode registers V, S, O are examined. That is, it is checked whether the stopwatch measurement mode (V = 1), the lap measurement mode (S = 1), or the target time display mode (O = 1) is set. Here, if it is set to any of the above-described mode, the flow advances to step T15, time measurement processing is performed, 1/100 to the content of the measurement Reshisuta T ₁
The time data of seconds is added and the stopwatch measurement time is updated. If neither of the above three modes is selected, the measurement process (step T15) and the sound emission process (step T17) described later are not executed.

When such a time measuring process is completed, the process proceeds to the next step T16, and the presence or absence of the second carry of the stopwatch is checked (step T16). In this processing, every time the measurement time elapses 1 second, a preset target value is compared with the measurement time, and a sound emission processing (step T17) for generating an alarm sound when they match each other is executed. It is for the purpose. In this case, the generation of the alarm sound is regulated according to the alarm on / off data corresponding to the target time preset in the target value setting memory PS.

Then, in the next step T18, the presence or absence of the second carry in the clock register Y ₀ is checked. Here, if there is no second carry, the process jumps to step T27 (display processing), but if the second carry is detected, the contents of the mode registers S and T are examined (steps T19 and T20). That is, it is checked whether the lap measurement mode (S = 1) or the lap stop mode (T = 1) is set. Here, in the lap measurement mode, the value of the 5-second counter C ₀ is incremented to activate the auto return function (step
(T21) As a result, when it is detected in step T22 that the value of the 5-second counter C ₀ becomes "5", the mode is changed (step T23). That is, in the lap measurement mode, when 5 seconds elapse is detected by the 5-second counter C ₀ , the lap measurement mode is canceled and the stopwatch measurement mode is automatically switched. When it is detected in step T20 that the lap stop mode is set, the value of the 5-second counter C ₀ is incremented by 1 to activate the auto-return function as described above (step T24). When it is detected in step T25 that the value of C ₀ has become “5”, the mode is changed (step T26).
That is, when the 5-second counter C ₀ detects that 5 seconds have elapsed in the lap stop mode, the lap stop mode is released and the stopwatch stop mode is automatically switched. When it is detected in steps T19 and T20 that the mode is not the lap measurement mode or the lap stop mode, or when the modes are automatically switched in steps T23 and T26, step T27 (display processing) is executed respectively. . After execution of this display processing, this stopwatch processing ends, and this flow exits.

Key Processing and Display Processing Accompanying Stopwatch Operation Next, the operation associated with the operation of the switches S1 to S5 will be described with reference to FIGS.
This will be described with reference to the flowchart shown in the figure and the display states shown in FIGS. 11 to 13. Here, FIG. 7 shows a switch
S2, FIG. 8 is a switch S3, FIG. 9 is a switch S4, and FIG. 10 is a flowchart executed by operating the switch S5. Further, FIG. 11 shows the overall display state which changes in response to each switch operation. Further, FIG. 12 shows the display state in the all data recall mode, and FIG. 13 shows the display state in the current data recall mode.

<Process of Switch S1> The switch S1 is used to switch and specify the basic mode. Every time the switch S1 is operated, the value of the mode register M is “0”, “1”, “2”, “0” ... It changes like ...
Here, when M = 0, it corresponds to the basic clock mode, when M = 1, it corresponds to the stopwatch mode, and when M = 2, it corresponds to other functional modes, and these modes are cyclically changed each time the switch S1 is operated. Switch. FIG. 11 shows the display state in this case. In the basic clock mode (M = 0), the upper display 2 shows the day and year, the middle display 3 shows the month and day, and the lower display 4 shows the hour, minute, second. Is displayed. When the switch S1 is operated once in the basic clock mode, the value of the mode register M becomes "1", and the mode is switched to the stopwatch mode. Then, when the switch S1 is operated in the stopwatch mode, the stopwatch mode is canceled and the mode is switched to another function mode (M = 2).

<Processing of Switch S2 and Switch S6> Each time the switch S2 is operated in the stopwatch mode, execution of the flow shown in FIG.
In 1 to T35, the mode is determined based on the contents of the mode registers L, V, W, S and T. In this case, reset mode (L = 1), stopwatch measurement mode (V
= 1), stopwatch stop mode (W = 1), lap measurement mode (S = 1), lap stop mode (T = 1)
The operation of the switch S2 is effective only when any one of the above modes is set.

Reset Mode Assuming that the reset mode (L = 1) is set, the remaining number of data memories X _{0 to} X ₂₉ , for example, “30” is displayed in the middle row as shown in FIG. 11 L = 1. Is
Zero is displayed in all digits in the upper and lower rows.
It is possible to confirm the number of recordable measurement data by displaying the remaining number in the memory.

Reset Mode Target Value Setting Mode When the switch S6 is operated in the reset mode, the target value setting mode (Q = 1) is set. In this setting mode, the target lap time is set in advance before the stopwatch measuring operation is started. As shown in FIG. 4, the target value setting memory PS stores the target time, for example, "1 minute 00 seconds." , "2 minutes 00 seconds" and "3 minutes 00 seconds" are set in advance. In this case, a flag indicating whether or not to generate an alarm sound at each target time is also set. When the setting of the target time is completed in this way, the switch S6 is operated again. This releases this setting mode and returns to the original reset mode. Therefore, in the reset mode of the stopwatch, the switch S6 comes to function as the set / release key in the target value setting mode.
(See Figure 11).

Reset Mode → Stopwatch Measurement Mode On the other hand, when the switch S2 is operated in the reset mode, this is detected in step T31, and the process proceeds to step T36 to change the mode. That is, the reset mode is released and the stopwatch measurement mode (V =
Switch to 1). Then, in the next step T37, the current date data stored in the clock register Y ₀ is read and recorded in the RAM 20. In this case, the data memory specified by the contents of the current start address register A ₀ with the contents of empty address register Z ₀ is transferred to the current start address register A _0, first date data in the data memory X ₀ is written . Therefore, if the switch S2 is operated in the reset mode, the stopwatch measurement mode is entered and the measurement operation starts and at the same time the current date data is displayed.
It will be recorded in the empty area of RAM20. At the same time as writing the date data, an identification code "0" indicating that the measurement time recorded corresponding to the date data is the measurement time from the start to the stop (finish time) is added to the empty area. It In this way, when the stopwatch measurement mode is set,
As shown in Fig. 11 V = 1, the measured time from the start, for example, "56 seconds 99", is digitally displayed in the upper and lower rows, respectively, and the number of data memory used, for example, "01" is digitally displayed in the middle row. Is displayed.

Stopwatch measurement mode Stopwatch stop mode When the switch S2 is operated in the stopwatch measurement mode, the process proceeds to step T38, the measurement mode is canceled and the stopwatch stop mode is switched to.
Then, the process proceeds to the next step T39, and the measured time (finish time) at the time of operating the switch S2 is stored in the data memory specified by the contents of the present start address register A ₀ , and the contents of the empty address register Z ₀ is +1. To be done.
Therefore, when the switch S2 is operated in the stopwatch measurement mode, the stopwatch stop mode is entered, the measurement operation is stopped, and the measurement time at the stop time is recorded as the finish time. Then, when the stopwatch stop mode is set,
As shown in Fig. 11 (W = 1), the latest lap time
For example, "1 minute 12 seconds 04", the number of used data memory "02" is displayed in the middle row, and the stop mark display is lit, and the measurement time digitally displayed in the lower row is the finish time when this stop mark is lit. Is specified. When the switch S2 is operated in this stopwatch stop mode, that is detected in step T33, and the process proceeds to step T40 to change the mode.
That is, the stopwatch stop mode is released, the mode is switched to the stopwatch measurement mode, and the measurement operation is started again. In this case, the measurement time is the previous finish time and the current measurement time.

At the start of the measurement operation of this time, the data measured last time is held as it is without being cleared, and the finish time obtained this time is recorded in the next empty area of the data memory corresponding to the date data. Therefore, in this embodiment, a maximum of 30 data memories X _{0 to} X ₂₉ can be used.
Individual measurement data can be recorded. Of course, when 30 data memories are required for one measurement, the contents of each memory are cleared.

Lap display mode (lap measurement mode lap stop mode) Further, the switch S2 also functions as an effective key in the lap display mode (R = 1). In this case, the switch S2 is operated in the lap measurement mode (S = 1). Then, it is detected in step T34 and the process proceeds to step T41,
The lap stop mode is set by changing the mode described later. When the switch S2 is operated in the lap stop mode (T = 1), the fact is detected in step T35, the process proceeds to step T42, and the lap measurement mode is set by changing the mode described later.

<Processing of Switch S3 and Switch S2> Every time the switch S3 is operated, execution of the flow of FIG. 8 is started, and in steps T51 to T53, the mode registers V, S,
The mode is determined based on the content of W. In this case, stopwatch measurement mode (V = 1), lap measurement mode (S = 1), stopwatch stop mode (W
The switch S3 operation is valid only when one of the modes (1) is set.

Stopwatch measurement mode → lap display mode Now, when the switch S3 is operated in the stopwatch measurement mode (V = 1), the fact is detected in step T51, the process proceeds to step T54, and the mode is changed. The measurement mode is switched to the lap measurement mode (S = 1) in the lap display mode (R = 1). And the measured time at the time of operating switch S3 is RAM2 as lap time.
It is recorded in the data memory of _{0 and} the value of the empty address register Z ₀ is incremented by 1 (step T55). In this way, when the switch S3 is operated in the stopwatch measurement mode, the lap measurement mode is set, and the lap time at this time is recorded. In this case, as shown in FIG. 4, the lap time is sequentially written in the data memory of the RAM 20 together with the number of times data. FIG. 11 S = 1 shows the display state at this time, and the measured lap time is displayed on the upper display section 2. When 5 seconds have elapsed in this lap measurement mode, as described above, 5 seconds have been detected in step T22 in FIG. 6, the lap measurement mode is canceled, and the original stopwatch measurement mode is automatically switched. Then, when the switch S3 is operated again 5 seconds after the switching to the lap measurement mode, the fact is detected in step T52, the process proceeds to step T55, and the lap time at that time is stored in the RAM 20. .

Therefore, each time the switch S3 is operated, the lap time at that time is obtained and recorded. For example, the fourth
As shown in the figure, the data memory X ₂ has the first lap time (1 minute 1 second 32), the data memory X ₃ has the second lap time (1 minute 1 second 45), and the data memory X ₄ has the third lap time. The lap time (58 seconds 97) is recorded, and the number of times data is recorded correspondingly. In this case, since the date data is recorded corresponding to the finish time, it is not recorded corresponding to each lap time.

On the other hand, when switch S2 is operated in the lap measurement mode,
This is detected in step T34 of FIG. 7 described above, and the process proceeds to step T41, the lap measurement mode is switched to the lap stop mode, and the 5-second counter C ₀ is cleared and started. FIG. 11 T = 1 shows the display state in the lap stop mode. When 5 seconds have passed since the mode was switched to the lap stop mode, the steps shown in FIG.
This is detected at T25 and the lap stop mode is automatically switched to the stopwatch stop mode.

Stopwatch stop mode → reset mode Then, in the stopwatch stop mode, when the switch S3 is operated, that is detected in step T53, and the stopwatch stop mode is switched to the reset mode (step T56). Then, the contents of the current start address register A ₀ are cleared and the contents of the measurement register Y ₁ are cleared (step T57).

<Process of Switch S4> The flow of FIG. 9 is started every time the switch S4 is operated, and the mode registers L, N, and
The mode is determined based on W and P. In this case, reset mode (L = 1), all data call mode (N = 1), stopwatch stop mode (W = 1),
The operation of the switch S4 is valid only when any one of the data recall modes (P = 1) is set this time.

Reset Mode All Data Recall Mode Now, assuming that the switch S4 is operated in the reset mode, the process proceeds to step T65, the mode is changed, and the reset mode is switched to the all data recall mode (N = 1). Therefore, to set the all data recall mode, the switch S4 may be operated once in the reset mode of the stopwatch. When the mode is switched to the all data recall mode in this way, the contents of the pointer X _n are first cleared. Next, data memory X ₀
It is checked whether the measurement data is stored in the data memory, which is addressed by the value of the pointer X _n of X ₂₉ to X ₂₉ , initially in the data memory X ₀ (step T67). Now, as shown in FIG. 4, since the measurement data is stored in the data memory X ₀ in correspondence with the date data, the process proceeds to the next step T68, and the contents are displayed. In this case, the data memory
Of the data in X ₀ , only date data is initially displayed. That is, as shown in FIG. 12, when the switch S4 is operated once from the clear mode of the stopwatch, the date data (May 17, 1985, Friday) is displayed. In this case,
As shown in Fig. 12, "RO1" to indicate that it is the first measurement data of the day is displayed in the middle row. When the switch S4 is operated in this state, the process proceeds from step T62 to step T69 in the second operation of the switch S4. That is, since the all data recall mode is set now, when the switch S4 is operated in this mode, the pointer
After the value of X _n is incremented by 1, the presence or absence of measurement data is checked (step T67). In this case, since the measurement data is stored in the data memory X ₀ , the measurement data is displayed (step T68). Therefore, in this case the 12th
As shown in the figure, the finish time (19:28:36) is displayed in the lower row, and the stop mark display that clearly indicates the finish time is lit in the middle row, and it is the first measurement data. The number of times of measurement “1” is displayed. Thereafter, when the switch S4 is sequentially operated in the same manner, the value of the pointer X _n is incremented by 1 each time the switch S4 is operated for the third time and thereafter.
The contents of the data memory are sequentially displayed. Therefore, 3
In the second operation, date data (Saturday, May 18, 1985) is displayed, and "RO1" indicating the first measurement data of the day is displayed. Next, in the fourth operation, the finish time of the day (20 minutes 13 seconds 02) is displayed. In this case, as shown in FIG. 4, assuming that the lap time is three lap times in addition to the finish time on that day, the finish time is increased to the upper stage in the fifth operation and the first lap time (1 minute 01 Second 32) is displayed at the bottom. Similarly, the second and third lap times are sequentially displayed by the sixth and seventh operations. Then, in the eighth operation, the date data for the next day and "RO2" indicating the number of times of measurement on that day are displayed in the middle row.

In this way, the measurement data in the RAM 20 are sequentially displayed in association with the date data, and when the switch S4 is operated after the last measurement data is displayed, an empty area is detected (step T67 ). With the detection of the empty area, the value of the mode counter B is checked in steps T70 to T72. At first, since the value of the mode counter B is "0", the value of the mode counter B is incremented by 1 in the next step T73, the best finish time is obtained, and the result is displayed (step T74). That is, all the finish times recorded in the RAM 20 are compared and examined, the past maximum time is searched from among them, and this is displayed as the best time. In this case, as shown in FIG. 12, "FINISH" is displayed in the upper row, "BEST" is displayed in the middle row, and the desired finish time (19: 28.36) is displayed in the lower row. Then, the switch S4 is operated once again. Since the value of the mode counter B is "1" now, this is detected in step T71 and the process proceeds to step T75, where the value of the mode counter B is incremented by one. Then, the worst finish time is obtained and displayed (step T76). That is, all the finish times are compared and examined, the past minimum time is searched from among them, and this is displayed as the worst finish time. In this case, as shown in FIG.
"FINISH" is displayed in the upper row, "WORS" is displayed in the middle row, and the worst finish time (22 minutes 19 seconds 63) is displayed in the lower row. Further, switch S4 is operated once. Since the value of the mode counter B is "2" now, that is detected in step T72,
The value of the mode counter B is incremented by 1 (step T77).
Then, the average finish time is calculated and displayed (step T78). That is, the past average finish time is obtained and displayed by adding all the finish times and dividing the value by the number of times of measurement. in this case,
As shown in Fig. 12, "FINISH" is shown in the upper row and "AVE" in the middle row.
r ”, the average finish time (20:18:15) is displayed at the bottom.

When switch S4 is operated after all the measurement data recorded in the data memory is displayed as described above, the best finish time, worst finish time, and average finish time are sequentially switched every time switch S4 is operated. Is displayed. Therefore, in the all data recall mode, the best finish time, the worst finish time, and the average finish time are obtained and displayed, so that this information can be easily and accurately known. When the switch S4 is further operated once while the average finish time is displayed, the process proceeds to step T79 and the mode is changed.
That is, the contents of the mode counter B are cleared and the all data recall mode is returned to the reset mode.

Stopwatch stop mode This time data recall mode When the switch S4 is operated once in stopwatch stop mode, this is detected in step T63 and step T80
Then, the stopwatch stop mode is switched to the current data recall mode (P = 1). Next, the value of the current start address register A ₀ is transferred to the pointer X _n (step T81). Then, the contents of the data memory addressed by the value of the pointer X _n are read and displayed (step T82). FIG. 13 shows a display example in this case. After the current date data is displayed in the first operation, the current finish time is displayed in the second operation, and the lap time is displayed in the third and subsequent operations. That is, switch S4 1
The data recall mode is set this time by the second operation, so from the step T64 to the step T in the second and subsequent operations.
The routine proceeds to 83, the value of the pointer X _n is incremented by 1, and it is checked whether or not the measurement data is stored in the data memory designated by the value of this pointer (step T84). here,
If the measurement data is stored, proceed to Step T82,
Since the contents are displayed, each time the switch S4 is operated, the measurement data of this time is sequentially displayed. When the switch S4 is further operated while the final measurement data is displayed, the process proceeds from step T84 to step T85 to check whether the value of the mode counter B is "0". First, since the value of the mode counter B is "0", the value of the mode counter B is incremented by 1 in the next step T88, and then the best lap display is performed (step T89). That is, the highest lap time of the lap times measured this time is displayed. Then, when the switch S4 is operated once, the process proceeds from step T86 to step T90, and the value of the mode counter B is incremented by one. Then, the minimum lap time of the lap times measured this time is displayed as the worst lap time (step T9
1). Further, when the switch S4 is operated once, step T87
To T92, the value of the mode counter B is +1
To be done. Then, the average lap time of this time is calculated from each lap time measured this time and displayed (step T93). Therefore, in the current data recall mode, the maximum lap time, the minimum lap time, and the average lap time of the lap times measured this time are obtained and displayed, so that this information can be easily and accurately known. When the switch S4 is further operated once while the average lap time is displayed, the process proceeds to step T94 where the contents of the mode counter B are cleared and the current data recall mode is switched to the stopwatch stop mode. To be

As described above, the switch S4 may be operated in the reset mode when recalling all the data and in the stopwatch stop mode when recalling only the current data. In this way, all data or current data can be recalled according to the mode state. For this reason, if you want to know the finish time or lap time measured this time at the end of this measurement, you can operate the switch S4 to enter the data recall mode this time, so you can immediately know the data this time, In addition, the data can be recalled this time according to the actual application.

<Process of Switch S5> Each time the switch S5 is operated, the flow of FIG. 10 is started, and in steps T101 to T104, the mode registers V, O,
The mode is determined according to the contents of R and U. In this case, stopwatch measurement mode (V = 1), target time display mode (O = 1), lap display mode (R =
1), switch S5 only in time difference display mode (U = 1)
The operation becomes effective.

Stopwatch measurement mode Target time display mode When switch S5 is operated once in stopwatch measurement mode, the process proceeds from step T101 to step T105.
The mode is changed and the target time display mode is entered from the stopwatch measurement mode. Then, in the next step T106, the preset target time is displayed. That is, the latest target time out of the target times preset in the target value setting memory PS and the next target time closest to the measurement time are read out and displayed as shown in O = 1 in FIG. Therefore, the target time can be confirmed during the measurement operation. When the switch S5 is operated once in this target time display mode, step T102
To T107, the mode is changed.
That is, the target time display mode is canceled and the original stopwatch measurement mode is restored. Therefore, when the user wants to know the target time, the target time display mode can be switched to, and when the lap time and the measurement time can be known, the target time display mode can be canceled and the stopwatch measurement mode can be switched to.

Lap display mode Time difference display mode When the switch S5 is operated once in the lap display mode, the process proceeds from step T103 to step T108 to switch from the lap display mode to the time difference display mode. And
In step T109, the time difference is displayed. That is, the difference between the measured lap time and the preset latest target lap time is obtained, and this time difference is displayed on the upper stage and the latest target lap time is displayed on the lower stage (U in FIG. 11). 1). In this case, the time difference between the measurement time and the target time is the plus / minus indicator 2
-2 indicates whether the time is positive or negative. If you run faster than your target time, it will be positive, and if you run late, it will be negative. This makes it possible to know how fast or slow the target time is when the vehicle actually passes the checkpoint. In other words, the remaining time up to the target time is displayed before the target time has elapsed, and the overtime is displayed after the target time has elapsed, so that the running pace can be managed. In such a time difference display mode, switch S5
If is operated once, the process proceeds from step T104 to step T110, the mode is changed, the time difference display mode is canceled, and the original lap display mode is restored.

[Effects of the Invention] As described in detail above, according to the present invention, a plurality of measured time information is stored and held, all the time information is read in the clear state of the stopwatch, and the time measured this time in the stop state. Since the information is read and displayed, the data measured this time can be immediately known by a simple operation at the end of this measurement, and the data can be recalled efficiently and according to the actual application. Have the effect of.

[Brief description of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an external view of an electronic wrist watch with a stopwatch device to which the present invention is applied.
2 is a block diagram of the liquid crystal display panel 1 shown in FIG. 1, FIG. 3 is a basic block circuit diagram of this electronic wrist watch, and FIG.
FIG. 5 is a block diagram of the RAM 20 shown in FIG. 3, FIG. 5 is a general flowchart showing an outline of the entire operation, and FIG.
FIG. 7 is a flowchart showing the specific contents of the stopwatch process, FIG. 7 is a switch S2, FIG. 8 is a switch S3, FIG. 9 is a switch S4, and FIG. Fig. 11 is a flowchart showing the operation in the mode, Fig. 11 is an overall display state diagram that changes with the switch operation, Fig. 12 is a display state diagram in the all data recall mode, and Fig. 13 is a display in the current data recall mode It is a state diagram. 1 ... Liquid crystal display panel, 11 ... Oscillation circuit, 15 ... Operation decoder, 17 ... ROM, 20 ... RAM, 21 ... Display section, 22 ... Computing section.

Claims (1)

[Claims] 1. A time measuring means for counting a reference clock signal to obtain measured time information, and a storage means for storing a plurality of measured time information obtained by the time measuring means during a counting operation by the time measuring means. Start / stop control means for controlling the start and stop of the counting operation by the time measuring means, and a clear for clearing the measurement time information of the time measuring means when the counting operation is stopped by the start / stop control means Means, and in the state in which the counting operation is stopped by the start / stop control means, the measurement time information stored in the storage means is stored in the storage means between the present start and the stop. The measurement time information is read out, and the clearing means clears the measurement time information of the time measuring means. In the loaded state, there is provided a read control means for reading out all the measured time information stored in the storage means, and a display means for displaying the time information read out from the storage means by the read control means. Stopwatch device characterized by the following.