JP4767087B2 - Timekeeping system and time correction method for the timekeeping system - Google Patents

Description

  The present invention relates to a time measuring system capable of appropriately synchronizing time with a reference time and a time correction method for the time measuring system.

In athletics, etc., the competition time is measured by measuring the time at which the athlete reached the goal time etc. based on the reference time. 2. Description of the Related Art In recent years, a timekeeping system for specifying a competitor's competition time by using a video (photograph) has been introduced in athletics and the like so that the exact competition time can be specified. This type of timing system includes, for example, a slit camera and a video recording device.
First, the slit camera is installed accurately on the timing line, and continuously captures slit images from immediately before the athlete passes the timing line to immediately after the passage.
On the other hand, the video recording apparatus synthesizes and records information (time data) of the time measured by the internal timer on the captured slit video.
Then, when specifying the competition time, a slit image obtained by combining the time data is appropriately displayed on a monitor of a personal computer or the like. By matching the competition time judgment line on the monitor with the athlete's torso (body) by operating the mouse on the computer, the competition time is measured with the visual confirmation of the competition officials.

In such a timekeeping system, at the start of a game, timekeeping is started by a video recording device (internal timer) in response to a start pistol or a start signal supplied from a start signal generator. Therefore, in a track competition or the like, if timing is not started by the video recording device for some reason at the start, the competition is not established and the start from the start is performed again.
In addition, the timing of the start signal to inform the competitor and the timing in a timing system that includes a timing device for capturing the video using a slit video (linear sensor) and measuring the time when the competitor reached the goal point. A technique for matching the start timing is also disclosed (for example, see Patent Document 1).
Japanese Patent No. 2978357 (page 2-3, FIG. 1)

In the timekeeping system described above, timekeeping is started by inputting a start signal. For this reason, various ideas have been made in road races (marathons, racewalks, cross-countries, etc.) in which the starting point and the timing point such as the goal point are separated to some extent.
As an example, transport is performed after a start signal is input. In other words, the video recording device (or the entire timing system) is temporarily placed at the start point, and after starting the timing by inputting a start signal at the start, the video recording device (or the entire timing system) is transported to the timing point.
In this case, the conveyance becomes large-scale and not only takes a lot of time but also the video recording apparatus may not be able to withstand conveyance while operating (timekeeping or the like). In other words, since the video recording device is not designed to withstand transport during operation, the timing stops due to impacts during transport, and subsequent slit video recording etc. may be disturbed. There was a thing.
In addition, when placed at the start point (including not only when transporting to the timing point later, but also when the start point and the timing point are the same), the video recording device may count the time for some reason at the start. It may not start. In road racing, unlike the track competition, the start is not redone. In other words, even if the video recording device does not start timing, the competition is established and continues as it is.

For this reason, when the input of the start signal cannot be obtained, the operation of appropriately starting the timing of the video recording apparatus has been performed.
For example, with the timekeeping system set to the time point, the competition officer can start the competition while watching a real-time video (such as a TV broadcast) of the start point or calling another competitor at the start point. The signal was manually input at the same time, and the timing of the video recording device was started.
Still, in this case, since it is still manual, a certain amount of error (time difference) naturally occurs with the timing of the start point and the start of the timing of the video recording apparatus. In addition, when the video or call is interrupted, there may be a situation where the start of the competition cannot be grasped and the video recording device cannot start timing.

  For these reasons, in road races and the like, there has been a demand for a technique that can perform appropriate time synchronization in synchronization with the reference time even when the start signal cannot be input.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a timekeeping system capable of appropriately synchronizing time with a reference time even when a start signal cannot be input, and a time correction method for the timekeeping system. And

In order to achieve the above object, a time measuring system according to the first aspect of the present invention includes:
A light-emitting means that emits light in synchronization with a reference time measured by a reference timer that is a reference for measuring the elapsed time from the start of the competition ;
In order to photograph the athlete passing through the time line, the slit image on the time line is periodically photographed, and the photographing means arranged to photograph the light emission of the light emitting means,
Provided separately from the reference timer, and clocking means for clocking time;
Arranging the slit video imaged by the imaging means in time series, and combining the time information indicating the time measured by the time measuring means with the slit video arranged in time series;
The position information of the time corresponding to the position of the light emission point indicated by the light emission of the light emitting means and the timing of the light emission of the light emitting means in the slit video arranged in time series by combining the time information by the combining means. A time difference calculating means for calculating a time difference between the reference time measured by the reference timer and the time measured by the time measuring means from the relationship with the position;
Correction means for correcting the time measured by the time measuring means based on the time difference calculated by the time difference calculating means;
Equipped with a,
The synthesizing unit synthesizes the time information of the time corrected by the correcting unit with the slit video image including a player so that the competition time can be measured.
Timing system, wherein a call.

According to the present invention, first, the light emitting means is composed of, for example, a strobe and the like, and is synchronized with a reference time (for example, running time) measured by a reference timer serving as a reference for measuring the elapsed time from the start of the competition. Emits light. The photographing means is composed of, for example, a slit camera and periodically shoots a slit image on the timing line in order to photograph the athlete passing through the timing line , and is arranged so that the light emission of the light emitting means can be photographed. Is done. The time measuring means is provided separately from the reference timer, and measures the time (competition time) (to be corrected). The synthesizing unit arranges the slit images captured by the imaging unit in time series, and synthesizes time information indicating the time measured by the time measuring unit with the slit images arranged in time series. The time difference calculating means includes the position of the light emitting point indicated by the light emission of the light emitting means and the position of the time information corresponding to the light emission timing of the light emitting means in the slit images arranged in time series by combining the time information by the combining means. Therefore, the time difference between the reference time measured by the reference timer and the time measured by the time measuring means is calculated . Compensation means, based on the time difference, which is calculated by the time difference calculating means, time counting means for correcting the time measured. And a synthetic | combination means synthesize | combines the time information of the time correct | amended by the correction | amendment means to the slit image | video containing a player, in order to be able to measure competition time.
As a result, even when the start signal cannot be input, the time can be appropriately synchronized with the reference time counted by the reference timer.

In order to achieve the above object, a time measuring system according to the second aspect of the present invention provides:
A reference timer that measures a reference time that is a reference for measuring the elapsed time from the start of the competition, a light emitting device that emits light in synchronization with the reference time that is measured by the reference timer, and an athlete who passes the time line In order to photograph, the slit image on the time measuring line is periodically photographed, and the photographing device arranged so as to photograph the light emission of the light emitting device, and the slit image photographed by the photographing device are acquired. A timing system having a video recording device,
In the video recording device,
Provided separately from the reference timer, and clocking means for clocking time;
Arranging the slit video imaged by the imaging device in time series, and combining the time information indicating the time measured by the time measuring means with the slit video arranged in time series;
The position information of the time corresponding to the position of the light emission point indicated by the light emission of the light emitting device and the timing of light emission of the light emitting device in the slit video arranged in time series by combining the time information by the combining means. A time difference calculating means for calculating a time difference between the reference time measured by the reference timer and the time measured by the time measuring means from the relationship with the position;
Correction means for correcting the time measured by the time measuring means based on the time difference calculated by the time difference calculating means is provided ,
The synthesizing unit synthesizes the time information of the time corrected by the correcting unit with the slit video image including a player so that the competition time can be measured.
It is characterized by that.

According to the present invention, in the video recording apparatus, first, the time measuring means is provided separately from the reference timer ( the reference timer for measuring the reference time as a reference for measuring the elapsed time from the start of the competition). Measure the time (competitive time). The synthesizing means arranges the slit video ( slit video on the time line to shoot the athlete passing through the time line) in time series, and time information indicating the time measured by the time means. Are combined into a slit image arranged in time series. The time difference calculating means includes the position of the light emitting point indicated by the light emission of the light emitting device and the position of the time information of the time corresponding to the light emission timing of the light emitting device in the slit images arranged in time series by combining the time information by the combining means. Therefore, the time difference between the reference time measured by the reference timer and the time measured by the time measuring means is calculated . Compensation means, based on the time difference, which is calculated by the time difference calculating means, time counting means for correcting the time measured. And a synthetic | combination means synthesize | combines the time information of the time correct | amended by the correction | amendment means to the slit image | video containing a player, in order to be able to measure competition time.
As a result, even when the start signal cannot be input, the time can be appropriately synchronized with the reference time counted by the reference timer.

The synthesizing unit synthesizes the time measured by the timing unit and the time data including scale lines into the slit video arranged in time series,
The time difference calculating means specifies the position of the second of the time data and the position of the light emitting point emitted at the second of the time counted by the reference timer from the slit image, and from the difference between the specified positions Calculate the offset that is the time difference,
The correcting means may correct the time counted by the time measuring means to a time synchronized with the reference time by the calculated offset.

In order to achieve the above object, a time measuring system according to the third aspect of the present invention provides:
A reference timer that measures a reference time that is a reference for measuring the elapsed time from the start of the competition, a light emitting device that emits light in synchronization with the reference time that is measured by the reference timer, and an athlete who passes the time line In order to photograph, a slit image on the timing line is periodically photographed, and a photographing device arranged so as to photograph light emission of the light emitting device, and time information on the slit image photographed by the photographing device. A time recording system comprising: a video recording device that synthesizes and records; and a processing device that obtains information to be processed from the video recording device,
In the video recording device,
Provided separately from the reference timer, and clocking means for clocking time;
There is provided a synthesizing unit that arranges the slit images taken by the photographing device in time series, and combines the time information indicating the time measured by the time measuring unit with the slit images arranged in time series. ,
The processing device includes:
Video acquisition means for acquiring the slit video combined with the time information from the video recording device;
From the relationship between the position of the light emitting point indicating the light emission timing of the light emitting device and the position of the time information corresponding to the light emission timing in the slit video acquired by the video acquisition means, the reference timer A time difference calculating means for calculating a time difference between the reference time measured by the time and the time measured by the time measuring means of the video recording device;
Correction means for correcting the time measured by the time measuring means of the video recording device based on the time difference calculated by the time difference calculating means is provided ;
The synthesizing unit synthesizes the time information of the time corrected by the correcting unit with the slit video image including a player so that the competition time can be measured.
It is characterized by that.

According to the present invention, in the video recording apparatus, first, the time measuring means is provided separately from the reference timer ( the reference timer for measuring the reference time as a reference for measuring the elapsed time from the start of the competition). Measure the time (competitive time). The synthesizing means arranges the slit images taken by the photographing device ( slit images on the timing line in order to photograph the athlete passing through the timing line) in time series, and indicates the time measured by the timing means. The time information is combined with the slit images arranged in time series. On the other hand, in the processing device, first, the video acquisition means acquires a slit video in which time information is synthesized from the video recording device. Further, the time difference calculating means is a reference timer based on the relationship between the position of the light emitting point indicating the light emission timing of the light emitting device and the position of the time information corresponding to the light emission timing in the slit video acquired by the video acquisition means. The time difference between the reference time measured by the time and the time measured by the time measuring means of the video recording apparatus is calculated . Compensation means, based on the time difference, which is calculated by the time difference calculating means, correcting the time measured by the timer means of the video recorder. And a synthetic | combination means synthesize | combines the time information of the time correct | amended by the correction | amendment means to the slit image | video containing a player, in order to be able to measure competition time.
As a result, even when the start signal cannot be input, time synchronization can be appropriately performed with the reference time measured by the external timer.

In order to achieve the above object, a time correction method for a timekeeping system according to the fourth aspect of the present invention is:
A reference timer that measures a reference time that is a reference for measuring the elapsed time from the start of the competition, a light emitting device that emits light in synchronization with the reference time that is measured by the reference timer, and an athlete who passes the time line In order to photograph, the slit image on the time measuring line is periodically photographed, and the photographing device arranged so as to photograph the light emission of the light emitting device, and the slit image photographed by the photographing device are acquired. A time correction method for a clocking system having a video recording device,
In the video recording apparatus, a time measuring step of measuring time by a time measuring means provided separately from the reference timer,
Arranging the slit video imaged by the imaging device in time series, and combining the time information indicating the time measured in the time measuring step with the slit video arranged in time series;
The position of the light emitting point indicating the light emission timing of the light emitting device and the time information of the time corresponding to the light emission timing in the slit video arranged in time series by combining the time information in the synthesis step. From the relationship with the position, a time difference calculating step for calculating a time difference between the reference time and the time measured in the time measuring step;
Based on the time difference calculated in the time difference calculating step, a correction step for correcting the time measured in the time measuring step;
Equipped with a,
In the synthesizing step, in order to be able to measure the competition time, the time information of the time corrected by the correction step is combined with the slit image including the athlete.
It is characterized by that.

According to the present invention, in the video recording apparatus, first, the time measuring step is provided separately from a reference timer ( a reference timer for measuring a reference time as a reference for measuring the elapsed time from the start of the competition). Measure the time (competitive time). The compositing step arranges the slit images taken by the imaging device ( slit images on the timing line in order to photograph the athlete passing through the timing line) in time series, and shows the time measured in the timing step. The information is combined into a slit video arranged in time series. The time difference calculating step includes the position of the light emitting point indicating the light emission timing of the light emitting device and the position of the time information corresponding to the light emission timing in the slit images arranged in time series with the time information combined in the combining step. From this relationship, the time difference between the reference time and the time measured at the time measuring step is calculated . Compensation step, based on the time difference, which is calculated in the time difference calculating step, corrects the time clocked by the clock step. In the synthesizing step, the time information of the time corrected by the correcting step is combined with the slit image including the competitors so that the competition time can be measured.
As a result, even when the start signal cannot be input, time synchronization can be appropriately performed with the reference time measured by the external timer.

  According to the present invention, even when the start signal cannot be directly input to the timing system for measuring the competition time, it is possible to appropriately synchronize the time of the timing system and the reference time. Can be measured.

  A timing system according to an embodiment of the present invention will be described below with reference to the drawings. As an example, a case where the timing system is applied to a road race (marathon, racewalking, cross-country, etc.) will be described. In the applied road race, it is assumed that the start point and the time point (for example, a relay point, a finish point, etc.) are separated to some extent.

(Embodiment 1)
FIG. 1 is a schematic diagram showing an example of the configuration of a timekeeping system applied to the embodiment of the present invention.
As shown in the figure, the timing system includes a portable timer device 10 serving as a reference timer for measuring a reference time, a strobe 20 serving as a light emitting unit, a photographing device 30 serving as a photographing unit, a grip switch 40, and a video recording device 50. It is comprised including.

  As will be described later, this timing system combines the time data TD with the slit video SI captured by the imaging device 30 and records it, so that the video recording device 50 provided separately from the portable timer device 10 can record. This is a system for measuring the competition time of the competitor RN based on the time measured by the timer unit 53. The video recording device 50 that actually measures the competition time is arranged at the timing point from the beginning, and since this timing point is some distance from the start point, the start signal cannot be input at the start of the competition. It has become.

The portable timer device 10 is a time measuring device designed to withstand transportation while being operated (time keeping), and serves as a reference time in the competition, and measures a running time indicating an elapsed time from the start of the competition.
The portable timer device 10 is initially placed at the start point. For example, the portable timer device 10 inputs a start signal supplied from a start pistol or the like, and starts measuring the running time.
In addition, the running time may be measured by the portable timer device 10 by various methods.

  For example, as shown in FIG. 2 (a), the portable timer device 10 is connected to the reference timer device KT1 that has started the running time measurement by the start signal supplied from the start pistol SP, and is connected to the portable timer device 10 by a cable CB. The timer device 10 also starts to measure the running time synchronized with the reference timer device KT1, and substantially functions as a reference timer in the same manner as the reference timer device KT1.

  Further, in the case of adopting a method of counting down to the scheduled start time of the game and up-counting the running time from the scheduled start time, as shown in FIG. 2 (b), the reference timer device KT2 and the portable timer device 10 are connected. Connect with the cable CB and start down-counting at the same time. That is, the down-count start signal is supplied from the grip switch GS at an appropriate timing in consideration of the set time while setting the down-count time (remaining time). As a result, the reference timer device KT2 and the portable timer device 10 start down-counting synchronously and time the running time synchronized from the scheduled start time.

Further, in the case of adopting a method of commonly measuring the standard time obtained from a GPS (Global Positioning System) satellite or the like, as shown in FIG. 2 (c), a reference timer device KT3 to which a standard time receiver KJ is connected. And the portable timer device 10 are connected by the cable CB, and the clocking of the standard time is started in common.
Thereafter, when the competition is started and a start signal is supplied from the start pistol SP to the reference timer device KT3 as shown in FIG. 2D, the reference timer device KT3 determines the time difference between the start time and the standard time, that is, the difference. Ask for. When this difference is input to the portable timer device 10, the portable timer device 10 also measures the running time synchronized with the time difference eliminated. The input of the difference may be before the portable timer device 10 is transported (start point) or after it is transported (time keeping point).

In this way, the portable timer device 10 measures the running time synchronized with the reference timer device KT1. Then, after being transported to the timing point, the portable timer device 10 is disposed in the vicinity of the timing line L as shown in FIG.
The portable timer device 10 can be connected to a strobe 20 to be described later, and can control the light emission of the strobe 20 in accordance with the running time counted by itself. In addition, the portable timer device 10 includes a display unit (not shown) and the like, and the running time being measured can be digitally displayed on the display unit so that the current running time can be notified to the competition officials. ing.

The strobe 20 is connected to the portable timer device 10 and is accurately installed at a predetermined position on the extension line of the time measuring line L facing the imaging device 30. That is, the strobe 20 is appropriately arranged so that the strobe 20 emits light within a range of slit images SI arranged in a time series, which will be described later, taken by the photographing apparatus 30.
This strobe 20 is synchronized with the running time counted by the portable timer device 10 in order to perform time synchronization in the video recording device 50, for example, every second or every 10 seconds, with a positive second (n seconds 000). For example, the light is emitted for 0.003 seconds. In addition, if it is a positive second, the flash 20 may be emitted at an appropriate interval such as emitting light at 1 minute intervals.

The photographing device 30 is composed of a slit camera or the like connected to the video recording device 50, and is accurately installed at a predetermined position on the extension line of the timing line L facing the strobe 20, and the slit image SI0 on the timing line L is specified. Shoot continuously in a cycle. Then, the imaged device 30 sequentially outputs the captured slit image SI0 to the image recording device 50.
For example, the imaging device 30 continuously shoots the slit video SI from immediately before the competitor RN passes the timing line L until immediately after the competitor RN passes to measure the competition time.
In addition, in order to perform the time synchronization of the time measured internally by the video recording device 50 and the running time before the shooting device 30 shoots the slit video SI0 for measuring the competition time, The slit image SI0 is continuously photographed so that the light emission of the strobe 20 can be captured within a certain time. That is, a slit image SI0 as shown in FIG.
In FIG. 3A, the slit image is shown in an easy-to-understand manner. However, in actuality, for example, a slit image of 1000 frames or more is taken with a width of 1 mm or less per second. As shown in (), the presence of the strobe 20 can be confirmed in the slit image SI only during light emission. Note that the slit image capturing interval (0.001 seconds) is shorter than the light emission interval (0.003 seconds) of the strobe 20 so that the light emission of the strobe 20 can be captured without being missed.

Returning to FIG. 1, the grip switch 40 includes an instruction switch connected to the video recording device 50 and is operated by a competition official or the like.
When the grip switch 40 is pressed, a manual start signal is supplied to the video recording device 50, and time measurement is started by a time measuring unit 53 described later.
Specifically, the competition officer or the like waits until the time set to the video recording device 50 starts, while watching the running time digitally displayed on a display unit (not shown) of the portable timer device 10. When the running time reaches that time, the grip switch 40 is pressed to cause the time counting unit 53 to start measuring time from that time. As an example, when the running time is exactly one hour (01: 00: 00: 00), when the timekeeping unit 53 wants to start counting from “01: 00: 00: 00”, the competition officials, etc. While “01: 00: 0” is set, the user waits for the grip switch 40 to be pressed. Then, at the timing when the running time displayed on the portable timer device 10 becomes “01:00:00”, the competition officer or the like presses the grip switch 40 to cause the time measuring unit 53 to start measuring time.
Since the time counting of the video recording device 50 is manually started in this way, the time measured by the time measuring unit 53 is somewhat different from the running time measured by the portable timer device 10.

The video recording device 50 synthesizes and records the time data TD of the running time (hereinafter referred to as internal running time) based on the time counted internally in the slit video SI photographed by the photographing device 30 and arranged in time series. And when measuring competition time, the recorded slit image | video SI is suitably displayed on the monitor etc. of a personal computer. The competition time determination line J on the monitor is matched with the athlete's torso (body) by operating the mouse on the personal computer, etc., so that the competition time can be measured based on the visual confirmation of the competition officials.
Specifically, the video recording device 50 includes a slit video acquisition unit 51, a start signal acquisition unit 52, a time measurement unit 53 as a time measurement unit, a control unit 54 as a synthesis unit and a correction unit, and a video storage unit 55. And an offset calculation unit 56 as time difference calculation means.

  The slit image acquisition unit 51 sequentially acquires the slit image SI0 photographed by the photographing device 30, converts it into digital data, for example, and sequentially supplies it to the control unit 54.

  The start signal acquisition unit 52 acquires a manual start signal supplied from the grip switch 40 and supplies the manual start signal to the timer unit 53.

  When a manual start signal is supplied via the start signal acquisition unit 52, the timer unit 53 starts timing. For example, a time for starting time measurement such as “01: 00: 00: 00” is set in advance, and the time measurement unit 53 starts time measurement from this time according to the supplied manual start signal.

The control unit 54 arranges the slit video SI0 supplied from the slit video acquisition unit 51 in time series and synthesizes information such as the time measured by the clocking unit 53.
Specifically, as shown in FIG. 4A, the control unit 54 synthesizes the time data TD including the internal running time and the scale line with the slit video SI. The slit image SI combined with such time data TD is used for strict competition time measurement.
By the way, the control unit 54 includes a slit including the light emission point FP of the strobe 20 as shown in FIG. 4B in order to synchronize the time before synthesizing the slit video SI for measuring the competition time. The time data TD is synthesized with the video SI.
Then, an offset T (time difference between the internal running time and the running time which is the standard time) calculated by the offset calculating unit 56 is obtained, and the time obtained by correcting the time measured by the time measuring unit 53 is obtained. After setting the internal running time, the time data TD of the internal running time is combined with the slit image SI. That is, after the time of the internal running time and the portable timer device 10 is synchronized, the slit video SI for measuring the competition time is synthesized.

Returning to FIG. 1, the video storage unit 55 stores the slit video SI combined with the time data TD by the control unit 54. That is, the slit video SI as shown in FIGS. 4A and 4B is stored.
Note that the slit video SI as shown in FIG. 4A is read for measuring the competition time. Further, the slit image SI as shown in FIG. 4B is read out when time synchronization is performed, and is used by the offset calculation unit 56.

The offset calculating unit 56 uses the slit video SI including the slit video SI0 when the strobe 20 emits light (light emission point), the time measured by the time measuring unit 53, and the running time measured by the portable timer device 10. The offset T that is the time difference of is calculated.
Specifically, the strobe 20 emits light for 0.003 seconds at regular intervals of 10 seconds (every time the running time becomes n minutes 0 seconds 000, n minutes 10 seconds 000, n minutes 20 seconds 000,...). 5, the offset calculation unit 56 emits the position P1 on the time axis of the 10 seconds unit of the time data TD (in this case, 1 hour 3 minutes 0 seconds) and the position P1 on the time axis. The positions P2 of the points (that is, the regular seconds every 10 seconds of the running time and the light start of the strobe 20) are respectively identified, and the offset T is calculated from the difference between the positions P1 and P2 as shown in Equation 1 below. Is calculated. The light emitting point on the time axis is determined by appropriate image processing such as specifying as a point where the brightness of adjacent slit images SI0 changes suddenly, or specifying that the brightness of the slit image SI0 exceeds a predetermined threshold.
[Equation 1]
T = P1-P2
T: Offset P1: Position on the time axis of the positive second every 10 seconds of the time data TD P2: Position on the time axis of the light emission point of the strobe 20 When T> 0, the position P2 with respect to the position P1 Indicates that it is delayed by T, and when T <0, it indicates that the position P2 is advanced by T with respect to the position P1.
When the offset calculation unit 56 calculates the offset T in this way, the offset calculation unit 56 supplies the offset T to the control unit 54. Thereafter, the control unit 54 corrects the time measured by the time measuring unit 53 with the offset T to obtain an accurate running time, and synthesizes the time data TD of the running time with the slit image SI.

Hereinafter, the operation of the timing system configured as described above will be described with reference to FIG. FIG. 6 is a flowchart for explaining a time synchronization process executed to synchronize with the running time in the video recording device 50 before measuring the competition time.
Prior to this time synchronization processing, the video recording apparatus 50 is supposed to measure a time slightly different from the running time in accordance with a manual start signal supplied from the grip switch 40. The strobe 20 connected to the portable timer device 10 is, for example, a regular second at 10-second intervals (running time is n minutes 0 seconds 000, n minutes 10 seconds 000, n minutes 20 seconds 000,... ).

  First, the video recording device 50 acquires the slit video SI photographed by the photographing device 30 (step S11). That is, the slit video acquisition unit 51 sequentially acquires the slit video SI0 including the strobe 20 and sets it as the slit video SI arranged in time series.

The video recording device 50 synthesizes the time information measured by the time measuring unit 53 with the slit video SI (step S12). That is, the control unit 54 sequentially synthesizes the time data TD at a time slightly different from the running time measured by the time measuring unit 53 into the slit video SI.
The slit video SI combined with the time data TD is stored in the video storage unit 55.

  The video recording device 50 determines whether or not a certain time has elapsed (step S13). For example, it is determined whether or not a certain period of time longer than the interval at which the flash 20 emits light (in this case, 10 seconds) has elapsed.

If the video recording device 50 determines that the predetermined time has not elapsed, the video recording device 50 returns the process to step S11 described above, and repeats the acquisition of the slit video SI and the synthesis of the time data TD.
On the other hand, if it is determined that a certain time has elapsed, the video recording device 50 reads from the video storage unit 55 the slit video SI0 when the strobe 20 emits light, in other words, the slit video SI including the light emission point (step S14). That is, the offset calculation unit 56 reads the slit video SI as shown in FIG.

  The video recording device 50 calculates the time difference between the time measured by the time measuring unit 53 and the running time (step S15). That is, as shown in FIG. 5 described above, the offset calculation unit 56 determines the position P1 on the time axis of 10 seconds in the time data TD on the time axis and the light emitting point (that is, the second of every 10 seconds of running time) ) And the position P2 on the time axis are respectively identified, and the offset T that is the time difference is calculated from the difference between the positions using the time data TD.

The video recording device 50 corrects the time measured by the time measuring unit 53 with the calculated offset T to obtain an accurate running time (step S16). That is, when the offset T is calculated, the control unit 54 corrects the time measured by the time measuring unit 53 with the offset T to obtain an accurate internal running time, and the time data of the internal running time is obtained. TD is combined with the slit image SI.
That is, after the controller 54 can obtain an accurate internal running time in this way, when composing the slit image SI for photo determination, as shown in FIG. The time data TD of the internal running time synchronized with the running time measured by the timer device 10 is combined with the slit image SI.

As described above, the offset T, which is the time difference between the time measured by the time measuring unit 53 and the running time, is calculated from the slit video SI including the light emission point of the strobe 20 by the time synchronization process described above. Then, the time measured by the time measuring unit 53 is corrected with this offset T, and an accurate internal running time can be obtained.
As a result, even when the start signal cannot be input to the video recording device 50, the internal running time based on the time measured by the time measuring unit 53 and the running time measured by the portable timer device 10 can be appropriately synchronized.

(Other embodiments)
In the above-described embodiment, the case where the time measuring unit 53 starts measuring time according to the manual start signal supplied by manually operating the grip switch 40 has been described. However, the time measuring unit 53 is automatically set by another input. You may make it start timing.
For example, the strobe 20 starts to emit light at intervals of 10 seconds from a specified running time (for example, “00:00:00”), while the strobe 20 is detected from the slit image SI photographed by the photographing device 30. When the light emission (first light emission) is detected, the time measuring unit 53 may start time measurement from the specified time.
In addition, since a certain amount of time (for example, about 1 second) is required for the process for detecting the first light emission from the slit image SI, a delay is caused accordingly. Therefore, after the time measuring unit 53 starts measuring time, the offset T which is the time difference between the time measured by the time measuring unit 53 and the running time is calculated from the slit video SI including the second and subsequent light emission points, as described above. To do.
In this case as well, an accurate running time can be obtained by correcting the time measured by the time measuring unit 53 with the offset T. That is, even when the start signal cannot be input, time synchronization can be appropriately performed with the running time.

  In the above embodiment, the case where the offset T calculated by the offset calculator 56 is used to correct the time measured by the timer 53 to obtain an accurate internal running time has been described. It is also possible to correct the time itself measured by and to synchronize with the running time which is the standard time measured by the portable timer device 10. That is, after the correction, the time measuring unit 53 measures the time synchronized with the running time as the standard time.

In the above embodiment, a case has been described in which the offset T, which is the time difference between the time measured internally by the video recording device 50 (time measuring unit 53) and the running time, is calculated, and the time measured by the time measuring unit 53 is corrected. . However, the time offset measured by the timer 53 is not performed with the calculated offset T, and when the competition time is actually measured, the offset T is supplied to an external processing device together with the measured competition time. May be.
For example, as shown in FIG. 7, the case where the processing apparatus 60 which collects competition time etc. is further provided is demonstrated.

In this case, the video recording device 50 synthesizes the time data TD with the slit video SI including the light emission point photographed by the photographing device 30 before being used for measuring the competition time. Then, from the slit image SI including the light emitting point and the time data TD, an offset T that is a time difference between the time measured by the time measuring unit 53 and the running time is set as the time axis of the second of the time data TD in the same manner as described above. It is calculated from the difference between the upper position and the position of the light emission point on the time axis. Then, the video recording apparatus 50 stores the calculated offset T without correcting the time counted by the time measuring unit 53.
Thereafter, in the video recording device 50, when the competition time of the player RN is measured from the slit video SI synthesized with the time data TD, the video recording device 50 transmits the offset T to the processing device 60 together with the measured competition time. To do. Here, the competition time is measured and input by the competition officer by visually observing the slit video SI and operating the video recording device 50 at its input unit (not shown).
The video recording device 50 may be provided with an image processing unit that specifies the position of the slit video SI with the player RN by image processing and obtains a measurement result of the competition time based on this.

Then, the processing device 60 corrects the competition time with the offset T, and collects the corrected competition time.
Instead of sending the offset T from the video recording device 50 to the processing device 60 each time, the offset T may be sent from the video recording device 50 to the processing device 60 only once when the offset T is first calculated. .
In these cases as well, the competition time is corrected by the offset T, so that the competition time is finally measured with an accurate running time. That is, even when the start signal cannot be input to the video recording device 50, the competition time can be measured based on the time appropriately synchronized with the running time.

In the above embodiment, the case where the video recording apparatus 50 calculates the offset T has been described. However, the video recording device 50 may be limited to merely synthesizing the time measured by the time measuring unit 53 with the slit video SI as the time data TD, and an external processing device or the like may calculate the offset T or the like. .
For example, as illustrated in FIG. 8, the video recording apparatus 50 includes a communication unit 57 instead of the above-described offset calculation unit 56. On the other hand, the processing device 60 includes a communication unit 61, an offset calculation unit 62, a processing control unit 63, and a storage unit 64.

The communication unit 61 uses the time data TD composed of the time measured by the time measuring unit 53 as shown in FIG. 4B before the video recording device 50 specifies the competition time, and the slit video including the light emission point. The SI is acquired from the video recording device 50. The communication unit 61 measures the competition time by the video recording device 50 and acquires the competition time communicated by the communication unit 57.
The offset calculating unit 62 uses the time measured by the time measuring unit 53 of the video recording device 50 and the running time measured by the portable timer device 10 from the slit image SI including the light emission point and time data TD acquired by the communication unit 61. An offset T that is a time difference from the time is calculated. That is, the offset T is calculated in the same manner as described above (as described with reference to FIG. 5 described above).
The offset calculation unit 62 stores the calculated offset T in the storage unit 64.

When the communication unit 61 acquires the competition time from the video recording device 50, the processing control unit 63 corrects the competition time with the offset T stored in the storage unit 64. Then, the corrected competition time is stored in the storage unit 64.
The storage unit 64 stores the offset T calculated by the offset calculation unit 62, the competition time corrected by the processing control unit 63, and the like.

  In this case, the existing video recording apparatus can be used as it is as the video recording apparatus 50, and it is sufficient to develop the processing apparatus 60 and the like. Since the competition time is corrected by the offset T calculated by the processing device 60, the competition time is essentially timed with an accurate running time.

  In the above embodiment, the case where the strobe 20 emits light in accordance with the running time has been described. However, the light emitting element is not limited to the strobe 20 and may be arbitrary as long as light emission can be discriminated in the slit image SI. That is, the light emission amount, the emission color, and the like can be changed as appropriate.

  In the above embodiment, the case where the timing system is applied to the road race has been described. However, the competition to which the timing system can be applied is not limited to this and is arbitrary.

  As described above, according to the present invention, even when the start signal cannot be directly input to the timing system for measuring the competition time, it is possible to measure the competition time based on the time appropriately synchronized with the reference time. .

It is a schematic diagram which shows an example of a structure of the time measuring system applied to embodiment of this invention. (A)-(d) is a schematic diagram for demonstrating until the synchronized running time is time-measured in a portable timer apparatus. (A) is a schematic diagram for demonstrating slit image SI intelligibly, (b) is a schematic diagram which shows actual slit image SI. (A) is a schematic diagram which shows an example of the slit image | video SI used for specification of competition time, (b) is a schematic diagram which shows an example of the slit image | video SI used for time synchronization. It is a schematic diagram for demonstrating the mode of calculation of offset T. FIG. It is a flowchart for demonstrating the time synchronous process applied to embodiment of this invention. It is a schematic diagram which shows an example of a structure of the time measuring system applied to other embodiment of this invention. It is a schematic diagram which shows an example of a structure of the time measuring system applied to other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable timer apparatus 20 Strobe 30 Image pick-up device 40 Grip switch 50 Video recording device 51 Slit image acquisition part 52 Start signal acquisition part 53 Timing part 54 Control part 55 Video storage part 56 Offset calculation part 57 Communication part 60 Processing apparatus 61 Communication part 62 Offset calculation unit 63 Processing control unit 64 Storage unit

Claims (5)

A light-emitting means that emits light in synchronization with a reference time measured by a reference timer that is a reference for measuring the elapsed time from the start of the competition ;
In order to photograph the athlete passing through the time line, the slit image on the time line is periodically photographed, and the photographing means arranged to photograph the light emission of the light emitting means,
Provided separately from the reference timer, and clocking means for clocking time;
Arranging the slit video imaged by the imaging means in time series, and combining the time information indicating the time measured by the time measuring means with the slit video arranged in time series;
The position information of the time corresponding to the position of the light emission point indicated by the light emission of the light emitting means and the timing of the light emission of the light emitting means in the slit video arranged in time series by combining the time information by the combining means. A time difference calculating means for calculating a time difference between the reference time measured by the reference timer and the time measured by the time measuring means from the relationship with the position;
Correction means for correcting the time measured by the time measuring means based on the time difference calculated by the time difference calculating means;
Equipped with a,
The synthesizing unit synthesizes the time information of the time corrected by the correcting unit with the slit video image including a player so that the competition time can be measured.
Timing system, wherein a call. A reference timer that measures a reference time that is a reference for measuring the elapsed time from the start of the competition, a light emitting device that emits light in synchronization with the reference time that is measured by the reference timer, and an athlete who passes the time line In order to photograph, the slit image on the time measuring line is periodically photographed, and the photographing device arranged so as to photograph the light emission of the light emitting device, and the slit image photographed by the photographing device are acquired. A timing system having a video recording device,
In the video recording device,
Provided separately from the reference timer, and clocking means for clocking time;
Arranging the slit video imaged by the imaging device in time series, and combining the time information indicating the time measured by the time measuring means with the slit video arranged in time series;
The position information of the time corresponding to the position of the light emission point indicated by the light emission of the light emitting device and the timing of light emission of the light emitting device in the slit video arranged in time series by combining the time information by the combining means. A time difference calculating means for calculating a time difference between the reference time measured by the reference timer and the time measured by the time measuring means from the relationship with the position;
Correction means for correcting the time measured by the time measuring means based on the time difference calculated by the time difference calculating means is provided ,
The synthesizing unit synthesizes the time information of the time corrected by the correcting unit with the slit video image including a player so that the competition time can be measured.
Timekeeping system characterized by that. The synthesizing unit synthesizes the time measured by the timing unit and the time data including scale lines into the slit video arranged in time series,
The time difference calculating means specifies the position of the second of the time data and the position of the light emitting point emitted at the second of the time counted by the reference timer from the slit image, and from the difference between the specified positions Calculate the offset that is the time difference,
The correcting means corrects the time measured by the time measuring means to a time synchronized with the reference time by the calculated offset.
The timekeeping system according to claim 1 or 2. A reference timer that measures a reference time that is a reference for measuring the elapsed time from the start of the competition, a light emitting device that emits light in synchronization with the reference time that is measured by the reference timer, and an athlete who passes the time line In order to photograph, a slit image on the timing line is periodically photographed, and a photographing device arranged so as to photograph light emission of the light emitting device, and time information on the slit image photographed by the photographing device. A time recording system comprising: a video recording device that synthesizes and records; and a processing device that obtains information to be processed from the video recording device,
In the video recording device,
Provided separately from the reference timer, and clocking means for clocking time;
There is provided a synthesizing unit that arranges the slit images taken by the photographing device in time series, and combines the time information indicating the time measured by the time measuring unit with the slit images arranged in time series. ,
The processing device includes:
Video acquisition means for acquiring the slit video combined with the time information from the video recording device;
From the relationship between the position of the light emitting point indicating the light emission timing of the light emitting device and the position of the time information corresponding to the light emission timing in the slit video acquired by the video acquisition means, the reference timer A time difference calculating means for calculating a time difference between the reference time measured by the time and the time measured by the time measuring means of the video recording device;
Correction means for correcting the time measured by the time measuring means of the video recording device based on the time difference calculated by the time difference calculating means is provided ;
The synthesizing unit synthesizes the time information of the time corrected by the correcting unit with the slit video image including a player so that the competition time can be measured.
Timekeeping system characterized by that. A reference timer that measures a reference time that is a reference for measuring the elapsed time from the start of the competition, a light emitting device that emits light in synchronization with the reference time that is measured by the reference timer, and an athlete who passes the time line In order to photograph, the slit image on the time measuring line is periodically photographed, and the photographing device arranged so as to photograph the light emission of the light emitting device, and the slit image photographed by the photographing device are acquired. A time correction method for a clocking system having a video recording device,
In the video recording apparatus, a time measuring step of measuring time by a time measuring means provided separately from the reference timer,
Arranging the slit video imaged by the imaging device in time series, and combining the time information indicating the time measured in the time measuring step with the slit video arranged in time series;
The position of the light emitting point indicating the light emission timing of the light emitting device and the time information of the time corresponding to the light emission timing in the slit video arranged in time series by combining the time information in the synthesis step. From the relationship with the position, a time difference calculating step for calculating a time difference between the reference time and the time measured in the time measuring step;
Based on the time difference calculated in the time difference calculating step, a correction step for correcting the time measured in the time measuring step;
Equipped with a,
In the synthesizing step, in order to be able to measure the competition time, the time information of the time corrected by the correction step is combined with the slit image including the athlete.
Time correction method of the timekeeping system which is characterized a call.

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