JPH01100495A - Stop watch - Google Patents

Abstract

PURPOSE:To enable a measuring person to forecast the position of an object to be measured easily and intuitively, by performing an analog display of the ratio of a lap time during the measurement with respect to the preceding lamp time. CONSTITUTION:An oscillation division circuit 1, a counting circuit 2, a control circuit 3 and switches 4 and 5 are arranged to realize a time counting function for a stop watch. A lap time measured by a lap time counting function is stored into a memory 6. An arithmetic circuit 9 receives inputs of the number of segments of an analog display device 11 and the lap time stored in the memory 6 to calculate (the lap time stored in the memory 6)/(the number of the segments of the analog display device 11) and sent to an analog display circuit 10. With the results of the arithmetic circuit 9 used as specified time, the analog display circuit 10 increases the number of the segments lighted or extinguished of the analog display device 11 at each specified time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an analog/digital combined display stopwatch having a lap time measurement function.

[Conventional technology]

The measurement functions of the electronic stopwatch include split time measurement, which measures the cumulative time from the start,
There are two types of lap time measurement, which calculates the difference between the previous split time and the measured split time. The present invention relates to lap time measurement, and lap time measurement will be described below.

Lap time measurement is mainly used to measure the time for each lap in competitions in which a person completes multiple laps around a certain course. For example, it is required for motor sports competitions such as automobiles and motorcycles, and track and field competitions. When measuring lap times, the person measuring the lap time must capture the object to be measured before the measurement point and press the stopwatch switch at the same time as the object passes the measurement point. However, the measurer does not always need to visually track the measurement target and wait for it to pass the measurement point. It is thought that the lap times for each lap will not change significantly unless there is an accident or intentional act. Therefore, the measurer only needs to capture the measurement target and prepare to press the stopwatch when the lap time being measured approaches the previous lap time. Furthermore, in cases where the target cannot be seen until it has turned the final corner, such as in a car race, the only option is to predict the time when the target will turn the final corner based on the previous lap time and wait. In other words, when measuring lap times, it is necessary to be able to easily and quickly compare the previous lap time and the lap time currently being measured.

[Problem that the invention seeks to solve]

However, conventional stopwatches with a lap time measurement function use a switch to select and digitally display either the previous lap time or the lap time currently being measured, and there are no stopwatches that display both lap times at the same time. Furthermore, since the digital display expresses time in numbers, when comparing both lap times, the timer must calculate the difference between the two using mental calculations. This is troublesome for the measurer, who is easily distracted by mental arithmetic errors and mental arithmetic and cannot concentrate on the actual measurement, which makes it easy to make measurement errors.The present invention aims to solve these problems. The purpose is to provide a stopwatch that can easily and accurately measure lap times.

[Means for solving problems]

The stopwatch of the present invention has a stopwatch timing function including a lap time timing function, a digital display section that digitally displays the timing results of the stopwatch timing function, and an analog display section in which a plurality of segments are arranged adjacently. , an electronic stopwatch equipped with logical control means for controlling an analog display section so as to increase the number of segments that are sequentially turned on or off each time a predetermined period of time is measured, and a storage means for storing lap times measured by a lap time measurement function. (1) comprising a calculation means, the calculation means receives as input the number of segments on the analog display section and the lap time stored by the storage means, and calculates (the number of segments on the analog display section) as the analog display section; A stopwatch whose special feature is that it is configured to output as a predetermined time of the device.

[Effect]

According to the above configuration of the present invention, by displaying the ratio of the lap time being measured to the previous lap time in analog form, the measurer can easily and intuitively predict the position of the measurement target, and the measurement target can pass through the measurement point. Measurement preparations can be made in advance. In addition, since lap times can be measured with plenty of time, the psychological burden on the person taking the measurements is reduced.

〔Example〕

FIG. 1 is a block diagram of an embodiment of a stopwatch of the present invention. The operation will be explained below based on FIG.

In the figure, oscillation branch circuit 1. Counting circuit 2. Control circuit 3, switch A4. The switch B5 realizes a stopwatch timekeeping function. Switch A4 corresponds to the start/stop button of a stopwatch. switch B
corresponds to the stopwatch reset button. An oscillation frequency divider circuit 1 generates reference pulses necessary for timekeeping.

The counting circuit 2 counts the reference pulses and keeps time. The control circuit 3 includes switches A4. The counting circuit 2 is operated, stopped, and reset, and the memory 6 is written and cleared by turning the switch B5 on and off. When the switch A4 is turned on, the counting circuit 2 operates, starts counting, and clears the memory 6. When the switch A4 is turned on again, the counting circuit 2 is stopped and counting is stopped. When switch B5 is turned on, the result of counting circuit 2 is copied to memory 6,
Reset the counting circuit 2 and set the count to 0. The digital display section includes a digital display circuit 7 and a digital display device 8.
Consists of. The digital display device 8 is L OD * L E
This is realized using D, etc. The digital display circuit 7 is
The timing results of the counting circuit 7 and memory 6 are decoded and the digital display device 8 is driven.

Arithmetic circuit 9. Analog display circuit 10. The analog display device 11 is a characteristic element of the present invention.

The analog display device 11 is configured such that a plurality of segments are arranged adjacently. The analog display circuit 10 controls the segments of the analog display device 11 to sequentially increase the number of segments that are turned on or off every time a predetermined period of time is counted. The arithmetic circuit 9 sets the predetermined time of the analog display circuit 10 to (the number of segments of the analog display section &11) based on the time measurement result stored in the memory 6.

The operation during lap time measurement will be explained. When the switch A4 is turned on, the counting circuit 2 starts counting the reference pulses generated by the oscillation frequency dividing circuit 1', and the digital display circuit 7 displays the result on the digital display device B. At this time,
The contents of the memory 6 are set to 0, and the arithmetic circuit 9. Analog display circuit 10. Analog display device 11 does not operate. Next, when the switch 35 is turned on, the lap time of the first round is measured, and the timing result is copied from the counting circuit 2 to the memory 6.

Then, the counting circuit 2 is cleared and restarts counting from 0. The counting result of the counting circuit 2 and the lap time stored in the memory 6 are displayed on the digital display device 8 from the digital display circuit 7. The arithmetic circuit 9 calculates (the number of segments of the analog display device 11) and sends it to the analog display circuit 10. The analog display circuit 10 is
The result of the arithmetic circuit 9 is set as a predetermined time, and the number of segments on the analog display device 11 that are turned on or off is increased every predetermined time. Every time switch B5 is turned on,
The lap time is stored in the memory 6 and the above operation is repeated.

FIG. 2 shows an overview of an embodiment of the present invention. In the figure, 21 is the main body, 22 is a reset switch,
23 is a start/stop switch. The display is composed of an LCD panel, and numeral 24 displays the lap time or split time being measured. 25 displays the previous lap time. Reference numeral 26 has a plurality of fan-shaped segments arranged to form a circle, and the ratio of the lap time being measured to the previous lap time corresponds to the area of the fan caused by the lit segments with respect to the area of the entire circle. FIG. 4 explains the operation of 26 in FIG. 1. In Figure 4, (1) is a display during split measurement or measurement of the first lap time. When the second lap time is measured, the number of lit segments increases one by one, and (2) indicates that the second lap has completed about half a lap. Furthermore, the display (8) means that the measurement target is close to the measurement point, and the measurer only has to capture the measurement target and begin preparations to press the stopwatch button. (4) is a state where the previous lap time and the lap time being measured are the same. (6) is a display when the lap time being measured is slower than the previous lap time. When the reset button of the stopwatch is turned on, the analog display is cleared to (0), and the operation of increasing the number of lit segments is repeated.

FIG. 5 shows the appearance of an embodiment in which the analog display section 36 has segments arranged in a bar shape.

FIG. 5 shows the analog display section 46 in the same shape as the actual competition course, so that the approximate position of the measurement target on the course can be seen. In this case, by changing the length of each segment in accordance with the speed on the course, more accurate predictions can be made.Although the present invention has been described as a stopwatch, it can also be used as a wristwatch with a stopwatch, a stopwatch Of course, it can also be applied to attached clocks.

〔Effect of the invention〕

As described above, according to the present invention, since the ratio of the lap time being measured to the previous lap time is displayed in analog form, the following effects are produced.

(1) The measurer can easily and intuitively predict the position of the measurement target, and the measurement rate OIJ can be determined before the measurement target passes the measurement point. Therefore, measurement errors can be reduced and waiting time in measurement can be effectively utilized. Furthermore, since the lap time can be measured with plenty of time, the psychological burden on the person measuring the lap time can be reduced.

(2) The passage of time is shown fluidly as analog movement, which is interesting to watch, and even people with poor eyesight can easily check the operation of the stopwatch.

(8) Since the analog display section operates only during lap time measurement, it is also useful as a mode display for split time measurement and lap time measurement. The meaning of lap time measurement can also be inferred from the display status, helping to understand the operation of a stopwatch when using it for the first time or when you have forgotten how to use a stopwatch.

Further, in the circuit configuration of the present invention, (4) it can be applied regardless of the short or long lap time to be measured, so it can be used for all lap time measurements.

(5) Since it does not depend on the shape of the analog display device, the second
It can be applied to analog display devices of any shape, such as the fan shape shown in the figure, the bar shape shown in Figure 3, and the course shape shown in Figure 5.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a stopwatch of the present invention. FIG. 2, FIG. 3, and FIG. 5 are external views of embodiments of the stopwatch of the present invention. FIG. 4 is an explanatory diagram of the display operation of the analog display device of the stopwatch shown in FIG. 2. 21.51.41...Stopwatch body 2
2.52.42...Reset switch 25.5
5.45...Start/stop switch 24.54.44...Measurement time display section 25.5
5.45...Previous lap time display section 26.56.46...Analog light display section 21
! 1. Cow cry No. 9

Claims (1)

[Claims] A stopwatch timing function including a lap time measurement function, a digital display section that digitally displays the timing results of the stopwatch timing function, an analog display section in which a plurality of segments are arranged adjacently, logical control means for controlling the analog display unit to increase the number of segments that are sequentially turned on or off each time the time is counted;
The electronic stopwatch is equipped with a storage means for storing lap times measured by a lap time measurement function, and the electronic stopwatch has a calculation means, and the calculation means stores the number of segments of the analog display section and the number of segments stored by the storage means. A stopwatch, characterized in that it receives a lap time as an input and outputs (lap time stored by the storage means)/(segment number of the analog display section) as a predetermined time of the analog display device.