WO2012140715A1

WO2012140715A1 - Data synchronization and reproduction device, data synchronization and reproduction method, and data synchronization control program

Info

Publication number: WO2012140715A1
Application number: PCT/JP2011/059010
Authority: WO
Inventors: 章野島
Original assignee: 東芝三菱電機産業システム株式会社
Priority date: 2011-04-11
Filing date: 2011-04-11
Publication date: 2012-10-18
Also published as: TWI454141B; JPWO2012140715A1; JP5478776B2; TW201242349A

Abstract

The purpose of the present invention is to provide a data synchronization and reproduction device that can rapidly synchronize and reproduce image frames and numerical data. Accordingly, this data synchronization and reproduction device (1) is provided with the following: a data storage unit (113b) that stores image data that includes a plurality of image frames of objects-of-monitoring (61-6p) picked up by cameras (31-3n), and process data that includes a plurality of numerical data items acquired in a time sequence from the objects-of-monitoring; a program storage unit (113a) that stores a data synchronization control program that causes image data to be reproduced and, on the basis of the frame number and frame period of an image frame and the sampling gap and record number of numerical data, synchronizes and reproduces image data and numerical data; and a CPU (111) that executes the data synchronization control program.

Description

Data synchronous reproduction apparatus, data synchronous reproduction method, and data synchronous control program

The present invention relates to a data-synchronized playback apparatus and data for synchronizing and displaying image data including a plurality of image frames captured by a camera and process data including a plurality of numerical data acquired in time series from the monitoring object The present invention relates to a synchronized playback method and a data synchronization control program.

For example, when an abnormality occurs in the plant, the numerical data of the plant at the time of the abnormality and the image frame are displayed on the monitor for monitoring the plant, and the numerical data and the image frame are displayed on the storage device. Is stored as a separate file, and when the history information screen is developed for investigating abnormalities, numerical data and image frames at the time of the occurrence of abnormalities are displayed at the same time to enable detailed plant monitoring. A technique has been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 5-34181

However, in the above-described data synchronous reproduction apparatus of Patent Document 1, only when an abnormality occurs in the plant, the numerical data of the plant and the image frame are displayed and stored, so that during normal operation other than when the abnormality occurs There is a problem that the numerical data and the image frame cannot be confirmed later.

In particular, in the data synchronous reproduction device of the above-mentioned Patent Document 1, when confirming the numerical data of the plant and the image frame at the time of occurrence of an abnormality later, the record of each numerical data and the date / time information added to each image frame are included. Based on the synchronized playback based on this, when the number of monitoring targets increases, or when storing numerical data and image frames during normal operation, the number of files and the storage capacity of the file increase, so data for a long time is stored, There is a problem that a storage device having a very large size is required when the image frame and the numerical data are reproduced in synchronization later.

In addition, since the data synchronous reproduction apparatus of Patent Document 1 performs synchronous reproduction by adding date and time information to numerical data and an image frame, an image frame compression / decoding technique such as MPEG-4 is used when storing an image. There is a problem that the development cost increases because a general-purpose image data reproduction program such as Quick Time (registered trademark) player cannot be used during image reproduction.

In addition, when synchronized playback of image frames and numerical data, playback is performed while comparing each numerical data record with the date and time information added to each image frame, making high-speed synchronous playback and cueing difficult. There was a problem of being.

The present invention has been made in view of such a problem, and a data synchronous reproduction apparatus and data synchronous reproduction capable of synchronously reproducing an image frame included in image data and data included in process data at high speed. It is an object to provide a method and a data synchronization control program.

In order to achieve the above object, a first feature of the data synchronous playback device according to the present invention is that a plurality of image frames captured by a camera are imaged, and a frame number is assigned to each image frame, and the frame period of the image frames. And an image data storage unit that stores the data as image data, and a process data storage unit that stores a plurality of data acquired in time series from the monitoring target as process data together with a sampling number of the data by assigning a record number to each data. The image data stored in the image data storage unit is output to a monitor for playback, and the image data playback unit outputs the frame number of the image frame to be played back, and the image data playback unit outputs the frame number. The frame number is set to the frame period of the image frame and the sampling interval of the data. It converts the record number of the data Zui is the data having the converted record number to having a data synchronization reproduction control unit for reproducing on the monitor.

Further, a second feature of the data synchronous reproduction device according to the present invention is that the data synchronous reproduction control unit is designated when the data at a specific timing is designated in the process data displayed on the monitor. The converted record number of the data is converted into the frame number based on the sampling interval of the data and the frame period of the image frame, and the converted frame number is output to the image data reproduction unit, The image data having the specified frame number is reproduced.

Further, the third feature of the data synchronous reproduction device according to the present invention is that, when the range of data stored as a separate file is designated by external input in the process data displayed on the monitor, the data is designated. An image in a range synchronized with the data in the specified range by converting the record number of the data in the specified range to the frame number of the image frame based on the sampling interval of the data and the frame period of the image frame A synchronous image frame selection unit for selecting a frame; a synchronous storage control unit for storing the data in a range specified by an external input and the image frame in a range selected by the synchronous image frame selection unit as the same file; , To have.

Further, the fourth feature of the data synchronous reproduction device according to the present invention is that, based on an external input, an image data reproduction area where the image data is displayed by the image data reproduction unit, and a data synchronous reproduction control unit. A screen layout setting unit for setting a process data reproduction area on which the process data is displayed on the monitor and setting the number and size of image data to be reproduced within a predetermined condition in the image data reproduction area It is in having.

Further, the first feature of the data synchronous reproduction method according to the present invention is that a plurality of image frames obtained by photographing a monitoring target by a camera are stored as image data together with a frame number of each image frame by assigning a frame number to each image frame. A step of storing a plurality of pieces of data acquired in time series from the monitoring target as process data together with a record number assigned to each data, and the image data is output to a monitor and reproduced. When the frame number of the image frame to be reproduced is output, the output frame number is converted into the record number of the data based on the frame period of the image frame and the sampling interval of the data, The data having the converted record number is reproduced on the monitor. It lies in having a step.

Further, the second feature of the data synchronous reproduction method according to the present invention is that, in the process data displayed on the monitor, when the data at a specific timing is designated, the record number of the designated data is designated. Is converted into the frame number based on the sampling interval of the data and the frame period of the image frame, and the image data having the converted frame number is reproduced.

In addition, the third feature of the data synchronous reproduction method according to the present invention is that, in the process data displayed on the monitor, when a range of data to be stored as a separate file is specified, the specified range of the data A data record number is converted into a frame number of the image frame based on the sampling interval of the data and a frame period of the image frame, and an image frame in a range synchronized with the data in a specified range is selected. And storing the data in the specified range and the image frame in the selected range as the same file.

Further, the fourth feature of the data synchronous reproduction method according to the present invention is that, based on an external input, an image data reproduction area where the image data is displayed by the image data reproduction unit, and a data synchronous reproduction control unit. Setting a process data reproduction area on which the process data is displayed on the monitor, and setting the number and size of image data to be reproduced within a predetermined condition in the image data reproduction area. There is.

In addition, the first feature of the data synchronization control program according to the present invention is that a plurality of image frames in which a camera captures a monitoring target is imaged on a computer together with a frame number of each image frame and a frame period of the image frame. A step of storing as data; a step of storing a plurality of data acquired in time series from the monitoring target as process data together with a sampling number of the data by assigning a record number to each data; and outputting the image data to a monitor When the frame number of the image frame to be reproduced is output, the output frame number is converted into the record number of the data based on the frame period of the image frame and the sampling interval of the data. And the data having the converted record number Certain that to execute the steps of reproducing on the monitor.

Further, the second feature of the data synchronization control program according to the present invention is that, in the process data displayed on the monitor, when the data at a specific timing is specified, the data of the specified data The record number is converted into the frame number based on the sampling interval of the data and the frame period of the image frame, and the step of reproducing the image data having the converted frame number is executed.

Further, the third feature of the data synchronization control program according to the present invention is that, in the process data displayed on the monitor, when a range of data to be stored as a separate file is specified, the specified range of the data A data record number is converted into a frame number of the image frame based on the sampling interval of the data and a frame period of the image frame, and an image frame in a range synchronized with the data in a specified range is selected. And executing the step of storing the data in the specified range and the image frame in the selected range as the same file.

Further, the fourth feature of the data synchronization control program according to the present invention is that, based on an external input, an image data reproduction area where the image data is displayed by the image data reproduction unit, and the data synchronization reproduction control unit. Setting a process data reproduction area on which the process data is displayed on the monitor, and setting the number and size of image data to be reproduced within a predetermined condition in the image data reproduction area; There is to make it.

According to the data synchronous reproduction apparatus, data synchronous reproduction method and data synchronous control program of the present invention, the frame number of the image frame included in the image data and the record number of the data included in the process data are not based on the time information. Therefore, it is not necessary to add time information to the data and the image frame.

Therefore, the number of files and the storage capacity of the files can be reduced, and storage and synchronized playback over a longer period than before can be performed with a storage device having the same storage capacity.

In addition, since image frame compression / decoding technology such as MPEG-4 can be used when saving images, a general-purpose image data playback program such as Quick Time (registered trademark) player can be used when playing back images. This can reduce development costs.

Furthermore, without using time information, data and image frames can be synchronized and played back at high speed.

FIG. 1 is a diagram showing a configuration example of an online data management system including a data synchronous reproduction apparatus according to the present invention.

FIG. 2 is a block diagram showing a configuration example of the data synchronous reproduction apparatus according to the present invention.

FIG. 3A is a diagram illustrating an example of a file format of image data and process data stored in the data storage unit of the data synchronous playback device.

FIG. 3B is a diagram illustrating an example of a data structure of image data.

FIG. 3C is a diagram illustrating an example of a data structure of process data.

FIG. 4 is a flowchart illustrating a procedure of data synchronization display processing by the data synchronization reproduction apparatus of the first embodiment.

FIG. 5 is a diagram showing a specific example when the synchronous reproduction processing from image data to numerical data is performed.

FIG. 6 is a flowchart illustrating a procedure of data synchronization display processing of the data synchronization reproduction apparatus according to the first embodiment.

FIG. 7 is a diagram showing a specific example when the synchronous reproduction process from numerical data to image data is performed.

FIG. 8 is a diagram illustrating an example of a display screen displayed on the monitor of the data synchronous reproduction device of the first embodiment.

FIG. 9 is a diagram illustrating another example of the display screen displayed on the monitor of the data synchronous reproduction device of the first embodiment.

FIG. 10 is a diagram illustrating another example of the display screen displayed on the monitor of the data synchronous reproduction device of the first embodiment.

FIG. 11 is a diagram illustrating another example of the display screen displayed on the monitor of the data synchronous playback device of the first embodiment.

FIG. 12 is a diagram illustrating another example of the display screen displayed on the monitor of the data synchronous reproduction device of the first embodiment.

(Embodiment 1)
Hereinafter, a first embodiment of a data synchronization reproduction apparatus, a data synchronization reproduction method, and a data synchronization control program according to the present invention will be described.

<Description of configuration>
FIG. 1 is a diagram showing a configuration example of an online data management system including a data synchronous reproduction apparatus according to the present invention.

This online data management system is, for example, a hot rolling plant system that rolls heated iron, stainless steel, and aluminum slabs (steel pieces) with a rolling mill and finishes them into hot rolled coils with a thickness of several mm to several tens of mm. Image data of each monitoring target in Processa Implant System, which performs pickling, annealing, plating, painting, cutting, etc., to finish coils manufactured in hot rolling plants and cold rolling plants into final products And the process data acquired from each monitoring target are displayed in synchronization on the monitor and managed.

In FIG. 1, this online data management system includes a data synchronized playback apparatus 1 according to the present invention, a plurality of ITV (Industrial Television) cameras 21 to 2m (m is a natural number), a camera switch 3 and a digital image. The conversion unit 4 and control devices 51 to 5n (n is a natural number) such as a programmable logic controller (PLC) are connected to each other. A rolling mill, a pressing machine, a motor and a piston for driving these machines, etc. The operation state and control state of each of the monitoring objects 61 to 6p (p is a natural number) are determined by image data captured by a plurality of ITV cameras 21 to 2m and process data acquired by the control devices 51 to 5n. This is a monitoring system.

Here, for example, the data synchronous reproduction apparatus 1 and the digital image conversion unit 4 are connected by a LAN 7 such as Ethernet (registered trademark), while the data synchronous reproduction apparatus 1 and the control devices 51 to 5n are: It is connected by a control network 8 different from the LAN 7. When the control devices 51 to 5n can be connected to the LAN 7, the control network 8 can be replaced with the LAN 7.

Further, the data synchronous reproduction apparatus 1 according to the present invention is composed of a computer apparatus in which a monitor (display) 12, a keyboard 13, a mouse 14 and the like are connected to the apparatus main body 11. The data synchronous reproduction apparatus 1 includes image data from a plurality of ITV cameras 21 to 2m converted from an analog video signal to a digital video signal by the digital image conversion unit 4, and a plurality of data acquired from the control devices 51 to 5n. The process data including the numerical data is input and displayed on the monitor 12 for normal display or synchronous display processing. The configuration and operation of the data synchronous reproduction apparatus 1 according to the present invention, the configuration of image data, process data, and the like will be described later.

The ITV cameras 21 to 2m shoot multiple monitoring objects 61 to 6p and output analog video signals such as PAL and NTSC formats. Even fixed cameras can send pan and tilt by sending control signals. A camera capable of remote operation such as zooming may also be used. The ITV cameras 21 to 2m may or may not be provided with an audio microphone. One ITV camera 21 to 2m may be provided for each monitoring object 61 to 6p, or a plurality of ITV cameras 21 to 2m may be provided.

The camera switch 3 switches and outputs a predetermined number (for example, four in this embodiment) of video signals to be displayed on the monitor 12 from the video signals of the plurality of ITV cameras 21 to 2m. To do. When the number of video signals to be displayed on the monitor 12 is not limited, or when the number of ITV cameras 21 to 2m is equal to or less than the predetermined number, this switching function is further applied to the digital image conversion unit 4 or the data synchronous reproduction apparatus 1. Of course, the camera switch 3 may be omitted.

The digital image conversion unit 4 compresses and encodes NTSC or PAL format analog video signals output from a plurality of ITV cameras 21 to 2m into digital image data such as MPEG-4 and sends the digital image data to the data synchronous reproduction apparatus 1. Output. Note that the digital image conversion unit 4 can be omitted when a plurality of ITV cameras 21 to 2m can perform A / D conversion of video signals photographed inside the camera and output digital image data.

The control devices 51 to 5n control the operations of the monitoring objects 61 to 6p such as motors, heaters, and hydraulic machines by a program, and control the respective I / O (input / output) units 511 to 5n1. The process data including numerical data detected in time series at a predetermined sampling interval to be described later is acquired from each of the monitoring objects 61 to 6p.

FIG. 2 is a block diagram showing a configuration example of the data synchronous reproduction apparatus 1 according to the present invention.

As described above, the data synchronous reproduction apparatus 1 is composed of a computer device in which a monitor (display) 12, a keyboard 13, a mouse 14 and the like are connected to the apparatus main body 11.

As shown in FIG. 2, the apparatus main body 11 includes a CPU 111, a memory 112, a storage unit 113 such as an HDD or a large-capacity memory, an external device interface (hereinafter abbreviated as I / F) unit 114, and a control network. The I / F unit 115 is connected to the LAN I / F unit 116 and the like via an internal bus 117.

The CPU 111 functions as an image data reproduction unit of the present invention by executing an image data reproduction program among various application programs stored in the program storage unit 113a of the storage unit 113, and executes a data synchronization control program. Accordingly, the data synchronization playback control unit, the synchronized image frame selection unit, the synchronization storage control unit, and the screen layout setting unit of the present invention function.

The memory 112 is used as a calculation area or the like for temporarily storing or developing data when the CPU 111 executes various application programs.

The storage unit 113 includes a program storage unit 113a and a data storage unit 113b.

The program storage unit 113a includes an OS (operating system), an image data reproduction program for causing the CPU 111 to function as an image data reproduction unit of the present invention, a data synchronization reproduction control unit, a synchronous image frame selection unit of the present invention, An application program such as a data synchronization control program for functioning as a synchronization storage control unit and a screen layout setting unit is stored. In the first embodiment, as the image data reproduction program, an image data reproduction program programmed exclusively for this apparatus or a general-purpose image data reproduction program such as a Quick Time (registered trademark) player may be used. .

As the image data storage unit of the present invention, the data storage unit 113b captures image data including a plurality of image frames obtained by photographing a plurality of monitoring objects 61 to 6p with a plurality of ITV cameras 21 to 2m and A / D-converting them. In addition to the storage, the process data storage unit of the present invention stores process data including a plurality of numerical data acquired in time series from the plurality of monitoring objects 61 to 6p by the control devices 51 to 5n.

In the first embodiment, the program storage unit 113a and the data storage unit 113b are provided in one storage unit 113. However, the program storage unit 113a and the data storage unit 113b are different from each other. Of course, it may be configured as a storage unit.

The external device I / F unit 114 is an interface for connecting an external device such as the monitor 12, the keyboard 13, and the mouse 14 to the apparatus main body 11.

The control network I / F unit 115 is an interface for connecting the control network 19 and the apparatus main body 11.

The LAN I / F unit 116 is an interface for connecting the LAN 7 and the apparatus main body 11.

3A to 3C are diagrams showing examples of file formats of image data and process data stored in the data storage unit 113b of the data synchronous reproduction apparatus 1, and data structures of the image data and process data, respectively. .

As shown in FIG. 3A, in the data storage unit 113b of the storage unit 113 of the data synchronous reproduction apparatus 1, an image including a plurality of image frames in which a plurality of ITV cameras 21 to 2m photograph a plurality of monitoring objects 61 to 6p. Data D1 and process data D2 including a plurality of numerical data acquired in time series from the plurality of monitoring objects 61 to 6p by the control devices 51 to 5n are included in two sections S1 and S2 in one data file Df. I remember it. Here, the image data D1 and the process data D2 may be stored in different sections of different files.

FIG. 3B is a diagram illustrating a data structure of the image data D1 stored in the data storage unit 113b.

As shown in FIG. 3B, the image data D1 is obtained by converting analog video signals output from each of the plurality of ITV cameras 21 to 2m into digital image data such as an MPEG-4 encoding system by the digital image conversion unit 4. It is composed of image header information D11 and a plurality of image frames D12 having frame numbers # 1 to q (q is a natural number) obtained by photographing the monitoring objects 61 to 6p targeted by the ITV cameras 21 to 2m. Has been. Here, for convenience of explanation, only one image data D1 is shown, but actually there is image data D1 for each of a plurality of ITV cameras 21 to 2m.

In the case of the first embodiment, the image header information D11 constitutes at least a frame period Tf which is a time per frame of the image frame D12 constituting the image data D1 and the image data D1, as shown in FIG. 3B. And the total number of frames q of the plurality of image frames D12. The image header information D11 includes the camera identification information for identifying the ITV cameras 21 to 2m that output the image data D1, and the date and time of the image data D1 from the same ITV cameras 21 to 2m. Of course, date and time identification information for identifying different image data D1 may be included. Furthermore, of course, link information for linking with the corresponding process data D2 may be included in the image header information D11.

Here, in the first embodiment, the frame period Tf of the image frame D12 is, for example, 1 frame = 1/30 seconds. Note that 1/30 seconds is an example, and the frame period Tf of the image frame D12 may be 1/60 seconds, 1/50 seconds, or the like.

The image frame D12 is data obtained by performing high-efficiency compression coding by the digital image conversion unit 4 using a moving image compression method such as MPEG-4 on an analog video signal photographed by the ITV cameras 21 to 2m. Format, e.g. Of course, the H.264 encoding method, Motion JPEG that does not perform inter-frame prediction, or the like may be used. In short, any format of digital image data transmitted by the LAN 7 may be used. Of course, time information such as decoding time information (DTS) and reproduction time information (PTS) may be given to each of the plurality of image frames D12 for normal decoding and reproduction. Time information such as decoding time information (DTS) and reproduction time information (PTS) is not used for the synchronous reproduction processing with process data.

Thus, in the first embodiment, the image data D1 does not have time information or is not used for synchronized reproduction with the process data D2 even if it has time information. For this reason, in the first embodiment, during the synchronous reproduction process of the image data D1 and the process data D2, the sampling start time Ts1 stored in the process data header information D21 of the process data D2 corresponding to the image data D1 is This is used as the start time of the image data D1, that is, the reproduction start information of the image frame D12 of frame number # 1. Then, the frame playback start time of the image frame D12 of frame number # 2 to p after the image frame D12 of frame number # 1 is the sampling start time Ts1 used as the playback start time of the image frame D12 of frame number # 1. Based on the frame number # and the like of each image frame D12, the calculation is performed as described later. Therefore, in the first embodiment, the time information of each image frame D12 is not necessary for the synchronized reproduction process with the process data D2, and even if there is time information or the like, it is not used (referenced). Thereby, since reproduction is performed based on the frame number without using (referring to) the time information of each image frame D12, the reproduction and cueing can be speeded up.

FIG. 3C is a diagram illustrating a data structure of the process data D2 stored in the data storage unit 113b.

The process data D2 is binary data composed of numerical data D22 acquired in time series by the control devices 51 to 5n from the plurality of monitoring objects 61 to 6p at predetermined sampling intervals Ts2, as shown in FIG. 3C. And the process data header information D21 and a plurality of numerical data D22 of record numbers # 1 to r (r is a natural number) acquired from the monitoring objects 61 to 6p by the plurality of control devices 51 to 5n. .

In the case of the first embodiment, the process data header information D21 includes at least a sampling start time Ts1 that is a time at which acquisition of the process data D2 is started, a sampling interval Ts2 that is an interval at which the numerical data D22 is acquired, and a monitoring target Stores the total number of records r of a plurality of numerical data D22 acquired from the objects 61 to 6p at a predetermined sampling interval Ts2. Here, in the first embodiment, the sampling interval Ts2 of the process data header information D21 is, for example, 1 msec. However, this is an example and may be other than 1 msec.

Also, in the numerical data D22 acquired in time series from the monitoring objects 61 to 6p based on the sampling interval Ts2, the numerical values of the record number # 1 at the head of the process data D2, such as record numbers # 1 to r, are obtained. A record number is assigned from the data D22. Each numerical data D22 includes one or a plurality of items (items) of item numbers # 1 to s (s is a natural number) as shown in FIG. 3C. For example, item # 1 is a temperature sensor value, and item # 2 is a pressure sensor value. In the present invention, the item is not related to the main part of the invention and may be omitted.

Thus, the plurality of image frames D12 constituting the image data D1 and the plurality of numerical data D22 constituting the process data D2 are not synchronized at the time of recording. Further, 1/30 second of the frame period Tf of the image frame does not coincide with 1 ms of the numerical data sampling interval Ts2. For this reason, the data synchronous playback apparatus 1 of the first embodiment displays time information of the image data D1 such as decoding time information (DTS) and playback time information (PTS), and time information indicating the data acquisition time of the process data D2. In order to perform synchronous reproduction processing of the image frame D12 constituting the image data D1 and the numerical data D22 constituting the process data D2 without using them, synchronous processing is required during synchronous reproduction.

Therefore, the data synchronous reproduction apparatus 1 of the first embodiment performs synchronous reproduction processing using image frames and numerical data using frame numbers and record numbers without using or referring to time information.

<Description of operation>
Next, data synchronization display processing in the data synchronization reproduction apparatus 1 of Embodiment 1 will be described with reference to a flowchart.

(Description of synchronous reproduction operation from image data D1 to process data D2)
First, the synchronous reproduction operation of process data based on image data in the data synchronous reproduction apparatus 1 of Embodiment 1 will be described with reference to a flowchart.

FIG. 4 is a flowchart showing a procedure of data synchronization display processing by the data synchronization reproduction apparatus 1 of the first embodiment.

First, the user operates the keyboard 13 and mouse 14 of the data synchronized playback apparatus 1 and clicks (selects) a synchronized playback button (not shown) or the like, and the image data D1 and the process are transmitted to the apparatus main body 11. When a synchronous reproduction instruction with data D2 is input (S400 “YES”), the CPU 111 activates the image data reproduction program stored in the program storage unit 113a and the data synchronization control program, and starts synchronous reproduction processing.

That is, the CPU 111 of the apparatus main body 11 first functions as an image data reproduction unit by executing an image data reproduction program, and the image data header information D11 of the image data D1 stored in the data storage unit 113b and the process data. The process data header information D21 of D2 is read out and temporarily stored in the memory 112, and the frame period Tf included in the image data header information D11 and the sampling interval Ts2 included in the process data header information D21 are acquired (S410). Here, as described above, the CPU 111 acquires, for example, 1/30 seconds as the frame period Tf and 1 ms as the sampling interval Ts2.

Of course, the CPU 111 may acquire the frame period Tf and the sampling interval Ts2 in advance by the process of S410 before the process of S400. Further, when the frame period Tf included in the image data header information D11 is known, the CPU 111 does not acquire the frame period Tf included in the image data header information D11, and the sampling interval Ts2 included in the process data header information D21. Only get.

Next, the CPU 111 functions as an image data reproduction unit of the present invention by executing an image data reproduction program, and uses a timer (not shown) of the OS to 1 / which is the frame period Tf of the image data D1. A timer event signal is generated at intervals of 30 seconds (S420).

When the CPU 111 generates a timer event signal at 1/30 second intervals that are the frame period Tf (S430 “YES”), the CPU 111 functions as the image data reproduction unit of the present invention and stores the image stored in the data storage unit 113b. When the image frame D12 constituting the data D1 is read and the image frame D12 is encoded in the MPEG-4 format or the like, the image frame D12 is decoded in the MPEG-4 format or the like and reproduced on the monitor 12, The frame number of the reproduced image frame D12 is output (S440). At this time, when the image frame to be reproduced is designated by the user by the frame number or the like, reproduction is performed from the designated image frame. The designation of the image frame D12 is not limited to the frame number or the like, but may be designated by the cursor on the display screen displayed on the monitor 12 with the keyboard 13 or the mouse 14, or when the image frame D12 is not designated. Then, reproduction is started from the top image frame D12 in the image data D1, that is, the image frame D12 having the frame number # 1. At this stage, the image data D1 is reproduced asynchronously with the process data D2.

At the same time, the CPU 111 functions as the data synchronous reproduction control unit of the present invention by executing the data synchronous control program according to the present invention, and first, the frame number of the currently reproduced image frame D12 and the frame period Tf. Are acquired (S450). Here, also in the process of S450, as in the process of S410, when the frame period Tf included in the image data header information D11 is known, the CPU 111 uses the known frame period Tf.

Next, as a data synchronous reproduction control unit of the present invention, the CPU 111 calculates the “relative time from the first image frame” based on the frame number of the currently reproduced image frame D12 and the frame period Tf as follows: ) To calculate (S460)
Relative time from the first image frame = frame number × frame period Tf (1)
Next, as the data synchronous reproduction control unit of the present invention, the CPU 111 temporarily stores the “relative time from the first image frame” obtained from the previous equation (1) in the memory 112 or the like as shown in the following equation (2). By dividing the stored process data D2 by the sampling interval Ts2, the record number of the numerical data D22 synchronized with the currently displayed image frame D12 is calculated (S470).

Record number of numerical data to be synchronized = relative time from first image frame / sampling interval Ts2 (2)
Then, the CPU 111 selects and displays the numerical data D22 of the corresponding record number from the process data D2 based on the “record number of the numerical data to be synchronized” obtained by the above equation (2) (S480). Thereby, the CPU 111 does not refer to the time information, and the numerical data D22 synchronized in time with the currently displayed image frame D12 through the frame number of the image frame D12 and the record number of the numerical data D22. Can be played back synchronously. At that time, for example, when the process data D2 is displayed in a graph format or the like, the CPU 111 converts the numerical data D22 of the record number into the graph format or the like and updates the value included in the range to be displayed in the graph. To update the graph display. If the numerical data D22 is composed of a plurality of items # 1 to #s, the plurality of items # 1 to #s are reflected in the graph.

Then, the CPU 111 has a frame period Tf of 1 until a synchronous reproduction stop instruction is input by the user or the reproduction ends up to the final image frame D12 of the currently reproduced image data D1 (S490 “NO”). / Every time a timer event signal is generated at 30-second intervals (S430 “YES”), the processing from S440 to S480 described above synchronizes the image frame D12 in which the frame number and the record number are associated with the numerical data D22. Perform playback processing.

Therefore, in the data synchronized playback device 1 of the first embodiment, the image frame D12 that forms the image data D1 is made by associating the frame number of the image data D1 with the record number of the numerical data D22 without referring to the time information. And the numerical data D22 constituting the process data D2 can be reproduced in synchronization.

Then, the CPU 111 terminates the synchronous playback process when the user inputs a synchronous playback stop instruction or when the playback is completed up to the final image frame D12 of the currently reproduced image data D1 (S490 “YES”). .

(Specific example of synchronous reproduction from image data D1 to process data D2)
Next, a specific example of synchronous reproduction from the image data D1 to the process data D2 will be described with reference to the drawings.

FIG. 5 shows a specific example when the synchronous reproduction process from the image data D1 to the process data D2 is performed. In FIG. 5, the image data header information D11 of the image data D1 and the process data header information D21 of the process data D2 are omitted.

As shown in FIG. 5, in the data synchronous reproduction apparatus 1 according to the first embodiment, for example, assuming that the image frame having the frame number # 3 of the third frame from the first image frame is reproduced from the image data D1. In the first embodiment, since the frame period Tf is 1/30 seconds, the CPU 111 calculates the relative time from the first image frame D12 of the frame number # 1 by 3 × 1/30 seconds = 0.1 according to the equation (1). Calculate as seconds. Next, since the sampling interval Ts2 is 1 mm second, the CPU 111 calculates the record number from the first numerical data as 0.1 second / 1 mm second = 100, and reproduces the numerical data D22 of the record number # 100.

Therefore, according to the data synchronous reproduction apparatus 1 of the first embodiment, the image frame D12 constituting the image data D1 and the numerical data D22 constituting the process data D2 are not synchronized at the time of recording. Even if the frame period Tf of the frame D12 and the sampling interval Ts2 of the numerical data D22 do not coincide with each other, the frame number of the image frame D12 and the numerical data D22 are not used without using the time information of the image frame D12 or the numerical data D22. Using the record number or the like, the image frame D12 and the numerical data D22 can be reproduced synchronously.

As a result, according to the data synchronous reproduction apparatus 1 of the first embodiment, it is not necessary to refer to the time information of both data in the synchronous reproduction processing of the image data D1 and the process data D2, so that the image data D1 and the process data There is no need to analyze and find out the syntax (structure) of D2 and header information, and it is possible to execute synchronized playback processing at high speed.

In the description of the first embodiment, every time a timer event occurs from the OS timer every frame period Tf, the relative time from the first image frame is calculated by the above-described formula (1) and formula (2), Although the description has been made so that the record number of the numerical data D22 to be synchronously reproduced is calculated one by one based on the relative time from the first image frame, the present invention is not limited to this, and the above-described equations (1) and (2) ) Once, the record number of the numerical data D22 to be synchronously reproduced is calculated, and thereafter the record number of the numerical data D22 to be synchronously reproduced is generated every time a timer event occurs every frame period Tf from the OS timer. Of course, it may be incremented by +1. By doing this, if the record number of the numerical data D22 to be synchronized and reproduced first is calculated by the processing of S450 to S470 and the synchronized reproduction is performed, the calculation is performed first without executing the processing of S450 to S470. By only incrementing the record number of the numerical data D22 to be synchronously incremented by +1, the synchronous reproduction processing of the image frame D12 constituting the image data D1 and the numerical data D22 constituting the process data D2 becomes possible. Synchronous playback processing with a light processing load is possible.

(Description of synchronous reproduction operation from process data D2 to image data D1)
Next, the synchronous reproduction process of the process data D2 to the image data D1 in the data synchronous reproduction apparatus 1 of Embodiment 1 will be described with reference to a flowchart.

FIG. 6 is a flowchart showing a procedure of data synchronization display processing by the data synchronization reproduction apparatus 1 of the first embodiment.

In the display area of the process data D2 displayed on the monitor 12, the user designates the numerical data D22 in the process data D2 by moving, for example, a scroll bar or cursor with the mouse 14 or the keyboard 13, etc. When a synchronous reproduction instruction with the image frame D12 from the numerical data D22 is input to the apparatus main body 11 (S600 “YES”), the CPU 111 functions as a data synchronous reproduction control unit by executing the data synchronous control program. The sampling interval Ts2 is acquired from the record number of the numerical data D21 and the process data header information D21 (S610).

At the same time, the CPU 111 functions as a data synchronous reproduction control unit, and acquires the frame period Tf from the image data header information D11 of the image data D1 (S620). Note that the CPU 111 has already stored the sampling interval Ts2 and the frame period Tf, and if it is known, the acquisition processing may be omitted.

Next, the CPU 111 functions as a data synchronous reproduction control unit, and based on the sampling interval Ts2 and the record number of the numerical data D22 designated by a scroll bar, cursor, etc., as shown in the following equation (3). Then, “relative time from the first numerical data” in the process data D2 is calculated (S630).

Relative time from the first numerical data = current record number × sampling interval Ts2
... (3)
Next, as shown in the following equation (4), the CPU 111 divides the “relative time from the first record” calculated by the equation (3) by the frame period Tf that is the time per frame of the image frame D12. Thus, the “frame number of the image frame to be synchronized” synchronized with the current numerical data is calculated (S640).

Frame number of image frame to be synchronized = relative time from head / frame period Tf (4)
Then, the CPU 111 functions as an image data reproducing unit, and based on the frame number calculated by the equation (4), the image frame having the corresponding frame number is selected from the image data D1 stored in the data storage unit 113b. D12 is read and reproduced (S640). Thus, according to the first embodiment, it is possible to perform synchronization processing of the image frame D12 by designating the numerical data D22 based on the record number of the numerical data D22 and the frame number of the image frame D12.

(Specific example of synchronous reproduction from process data D2 to image data D1)
Next, a specific example of synchronous reproduction from the process data D2 to the image data D1 will be described with reference to the drawings.

FIG. 7 shows a specific example when the synchronous reproduction process from the process data D2 to the image data D1 is performed. In FIG. 7, as in FIG. 5, the image data header information D11 of the image data D1 and the process data header information D21 of the process data D2 are omitted.

That is, in the data synchronized playback apparatus 1 of the first embodiment, for example, as shown in FIG. 7, in the process data D2 display area of the process data D2 displayed on the monitor 12 among the process data D2, the mouse 14 and the keyboard 13 are displayed. For example, it is assumed that the scroll bar, the cursor, or the like is moved by specifying the numerical data D22 of the 134th record number # 134 from the first numerical data D22.

Then, in the first embodiment, since the sampling interval Ts2 is 1 mmsec, the relative time from the first numerical data is 134th × 1 mmsec = 134 mmsec by the above equation (3). The frame number of the image frame D12 to be synchronized with the 134th numerical data D22 is 134 mmsec / (1/30 sec) = 4.02 according to the equation (4) because the frame period Tf is 1/30 sec. ≈4, and the image frame D12 having the fourth frame number # 4 from the first image frame D12 is synchronously reproduced with the numerical data D22 having the record number # 134.

Therefore, according to the data synchronous reproduction apparatus 1 of the first embodiment, the frame number of the image frame D12 and the record number of the numerical data D22 are used without using the time information of the image frame D12 and the numerical data D22. By simply specifying the numerical data D22, the image frame D12 of the corresponding image data D1 can be synchronously reproduced.

In the data synchronized playback device 1 of the first embodiment, the data storage unit 113b of the storage unit 113 includes a plurality of numerical data acquired in time series from the plurality of monitoring objects 61 to 6p by the control devices 51 to 5n. Although the process data D2 is stored, the data included in the process data D2 is not limited to numerical data, and may be bit data or text data.

(Specific example of display screen)
Next, a specific example of the display screen displayed on the monitor 12 of the data synchronous reproduction device 1 of the first embodiment will be described.

8 to 12 are diagrams showing specific examples of display screens 121 to 125 displayed on the monitor 12 of the data synchronous reproduction apparatus 1 of the first embodiment, respectively. Note that the display screens 121 to 125 shown in FIGS. 8 to 12 are displayed on the screen layout setting by the CPU 111 of the data synchronization playback apparatus 1 of the first embodiment executing the data synchronization control program stored in the program storage unit 113a. It is an example of the display screen which functions as a part and is set or changed. That is, in the display screens 121 to 125 shown in FIGS. 8 to 12, the CPU 111 functions as a screen layout setting unit to display an image data reproduction area where image data is displayed based on a user instruction and process data. This is an example of a display screen in which a process data reproduction area to be reproduced is set on the monitor 12 and the number and size of image data to be reproduced are set and displayed within predetermined conditions in the image data reproduction area.

In the display screen 121 shown in FIG. 8, the image data display area 121 a is provided above the center of the display screen 121 and functions as a screen layout setting unit, while the process data display area 121 b is provided below the center of the display screen 121. ing. In the display screen 121, four image data display windows 121a1 to 121a4 are provided in the image data display area 121a, and the four image data display windows 121a1 to 121a4 are arranged in a plurality of ITV cameras 21 to 2m. The image data D1 of moving images from, for example, four ITV cameras with camera numbers # 1 to 4 (cameras 1 to 4), for which the camera switch 3 has been automatically switched by the user, is displayed.

In the display screen 121, the process data display area 121b displays the monitoring object captured by the four ITV cameras with camera numbers # 1 to 4 (camera1 to 4) switched to the camera switch 3. Process data D2 is being reproduced. Here, in the process data display area 121b, the horizontal axis in the horizontal direction in the figure indicates the time axis, while the vertical axis in the vertical direction in the figure indicates the value (level) of the numerical data D22 constituting the process data D2. Show.

The image data D1 reproduced in each of the four image data display windows 121a1 to 121a4 and the process data D2 reproduced in the process data display area 121b are described above by the CPU 111 functioning as a data synchronous reproduction control unit. As described above, the image frame D12 is reproduced in synchronization with the frame number of the image frame D12 and the record number of the numerical data D22.

In the process data display area 121b of the display screen 121, a process data time change bar 121b2 that moves in the horizontal direction in the figure is displayed to change the time of the process data D2 to be reproduced. The user may operate the cursor (not shown) of the process data time change bar 121b2 on the display screen 121 with the keyboard 13 or the mouse 14 to execute enlargement / reduction or enlargement display of the time axis of the process data D2. it can.

In FIG. 8, 121b3 is an extraction recording start position designation bar for designating the extraction recording (snapshot) start position of the process data displayed in the process data display area 121b, and 121b4 is displayed in the process data display area 121b. This is an extraction recording end position designation bar for designating the extraction recording end position of the processed process data, and is a bar used in extraction recording (snapshot) of Embodiment 12 to be described later, and is not used in Embodiment 1. The user can move these bars in the process data display area 121b by using the mouse 14 or the keyboard 13 as described above.

9 shows a state in which the process data display area 122b is enlarged on the entire display screen 122 in order to display the process data D2 in an enlarged manner. Therefore, in the display screen 122 shown in FIG. 9, the display screen 121 shown in FIG. 8 cannot display the image data display area 121a existing in the upper half of the center of the display screen 121. Therefore, the image data is superimposed on the process data display area 122b. A display area 122a is displayed, and four image data display windows 122a1 to 122a4 are provided in the data display area 122a.

In the display screen 123 shown in FIG. 10, similarly to the display screen 121 shown in FIG. 8, an image data display area 123 a is provided above the center of the display screen 123, while a process data display area is provided below the center of the display screen 123. 123b is provided. In the display screen 123, two image data display areas 123a1 and 123a2 are provided in the image data display area 123a, and the image data D1 of the moving image from the ITV camera 21 with the camera number # 1 is displayed in the image data display area 123a1. On the other hand, still image data D1 from the ITV camera 21 (camera1) of the same camera number # 1 is displayed in the image data display area 123a2. In the display screen 123, the process data display area 123b is synchronized with the image data D1 of the moving image from the ITV camera 21 of the camera number # 1 displayed in the image data display area 123a1, and the camera number # The process data D2 acquired by the control device from the monitored object photographed by one ITV camera 21 is displayed. The process data display area 123b is not different from the process data display

areas

121b and 122b on the display screens 121 and 122 shown in FIGS.

In the display screen 124 shown in FIG. 11, the image data display area 124a is provided above the center of the display screen 124, while the process data is displayed below the center of the display screen 124, as in the display screen 121 shown in FIG. An area 124b is provided. In this display screen 124, two image data display areas 124a1 are provided in the image data display area 124a as in the display screen 123 shown in FIG. 10, and the ITV camera with the camera number # 1 is provided in the image data display area 124a1. While moving image data D1 from 21 is displayed, image data D1 of four still images for different shooting times from the ITV camera 21 (camera1) of the same camera number # 1 are displayed in the image data display area 124a2. is doing.

Further, when the process data D2 includes text data such as the lot number of the rolled material being rolled, the text data 124c is displayed in the process data display area 124b.

The process data display area 124b is not different from the process data display areas 121b to 123b of the display screens 121 to 123 shown in FIGS.

In the display screen 125 shown in FIG. 12, the image data display area 125a is provided above the center of the display screen 125, while the process data is displayed below the center of the display screen 125, like the display screen 121 shown in FIG. An area 125b is provided. In the display screen 125, the image data display area 125a is selected by, for example, a camera image designation button 125a1 for selecting two camera images from four camera images and the camera image designation button 125a1. Moving image data from the two ITV cameras 21, 23 (camera 1, 3) with

camera numbers #

1, 3 are displayed in the image data display areas 125a2, 125a3. In this way, the window size of the image data display areas 125a2 and 125a3 on the display screen 125 is smaller than the window of the image data display areas 123a1 and 123a2 on the display screen 123 shown in FIG. Since it is larger than the window of the image data display areas 123a1 to 121a4 on the display screen 121, the image data D1 is easy to see. In this display screen 125, the process data display area 125b is no different from the process data display areas 121b to 124b of the display screens 121 to 124 shown in FIGS.

As described above, according to the data synchronous reproduction device 1 of the first embodiment, the frame number and frame of the image frame D12 constituting the image data D1 without referring to the time information of the image data D1 and the process data D2. By using the period Tf, the record number of the numerical data D22 constituting the process data D2, the sampling interval Ts2, and the like, the image frame D12 and the numerical data D22 can be synchronized and reproduced, and the display shown in FIGS. Display screens as shown on the screens 121 to 125 can be displayed on the monitor 12. As a result, according to the data synchronous reproduction apparatus 1 of the first embodiment, it is not necessary to refer to the time information of both data in the synchronous reproduction processing of the image data D1 and the numerical data D22. The capacity can be reduced, and a storage device having the same storage capacity as that of the prior art can perform storage and synchronous reproduction for a longer period than before.

(Embodiment 2)
In the first embodiment, the synchronous reproduction process of the image data D1 and the process data D2 using the frame number of the image frame D12 and the record number of the numerical data D22 without referring to the time information has been described. In the second embodiment, in addition to the function of the first embodiment, by further extracting and recording the numerical data D22 in the specified range from the process data D2, that is, by specifying the range of the numerical data D22 to be recorded by snapshot, The image frame D12 synchronized with the numerical data D22 in the specified range can be automatically stored. Therefore, in the data synchronous reproduction device of the second embodiment, the snapshot recording function is further added to the function of the data synchronous reproduction device 1 of the first embodiment, and the data stored in the program storage unit 113a. It is assumed that the synchronization control program includes a program for functioning as a synchronization storage control unit that is a function of this snapshot recording. Since the configuration of the data synchronous reproduction apparatus of the second embodiment is the same as that of the first embodiment, only the characteristic operation will be described with reference to the configuration of the first embodiment shown in FIGS.

That is, in the data synchronized playback apparatus 1 of the second embodiment, the user moves the process data display area 121b displayed on the monitor 12 by using the mouse 14 or the keyboard 13 and the like, for example, as shown in FIG. In addition, the extraction record start position designation bar 121b3 and the extraction record end position designation bar 121b4 are extracted from the process data D2 and designated separately for the range of process data D2. When the user clicks a save button (not shown) or the like, the CPU 111 executes the data synchronization control program stored in the program storage unit 113a, and first functions as a synchronized image frame selection unit. The record number of the numerical data D22 in the specified range is set in the range synchronized with the numerical data D22 in the specified range according to the equations (3), (4), etc., as in the case of the synchronized playback in the first embodiment. The frame number of the image frame D12 is converted.

Next, the CPU 111 functions as a synchronous storage control unit by executing the data synchronization control program, and associates the numerical data D22 in the range specified by the user with the image frame D12 synchronized with the numerical data D22 in the specified range. The data file Df of the image data D1 and the process data D2 is different from the data file Df, that is, the numerical data D22 in the range specified by the user from the data file Df of the image data D1 and the process data D2, The image frame D12 synchronized with the numerical data D22 in the specified range is stored in the data storage unit 113b in a form that is extracted.

Therefore, in the data synchronized playback apparatus 1 of the second embodiment, the file can be attached to an e-mail or the like by a mail program or the like and transmitted to another computer apparatus via a network such as the Internet or an intranet. .

As a result, the numerical data D22 in the range specified by the user, the image frame D12 synchronized with the numerical data D22 in the range, and the other computer device that has received the stored file, the data in the first and second embodiments. If the synchronized playback function of the image data D1 and the process data D2 is the same as that of the synchronized playback device 1, the numerical data D22 in the range specified by the user from the received file and the image frame D12 synchronized with the numerical data D22 in the range Can be played back synchronously to execute remote diagnosis and the like.

DESCRIPTION OF SYMBOLS 1 Data synchronous reproduction apparatus 11 Apparatus main body 12 Monitor 13 Keyboard 14 Mouse 111 CPU (Image data reproduction part, Data synchronous reproduction control part, Synchronous image frame selection part, Synchronous preservation control part, Screen layout setting part)
112 memory 113 storage unit 113a program storage unit 113b data storage unit (image data storage unit, process data storage unit)
114 External device I / F unit 115 Control network I / F unit 116 LAN I / F unit 21 to 2 m ITV camera (m is a natural number)
3 Camera switcher 4 Digital image conversion unit 51 to 5n Control device (n is a natural number)
61 to 6p Monitoring object 61 to 6p (p is a natural number)

Industrial applicability

The present invention can be applied to an online data management system for monitoring a plant.

Claims

An image data storage unit that stores a plurality of image frames captured by the camera as image data together with a frame period of the image frames by assigning a frame number to each image frame;
A plurality of data acquired in a time series from the monitoring target, a process data storage unit for storing each data as a process data together with a record number with a record number;
An image data reproduction unit for outputting the image data stored in the image data storage unit to a monitor for reproduction, and outputting a frame number of an image frame to be reproduced;
The frame number output from the image data reproduction unit is converted into a record number of the data based on a frame period of the image frame and a sampling interval of the data, and the data having the converted record number is converted into the data A data-synchronized playback control unit for playback on the monitor;
A data synchronous reproduction apparatus comprising:
In the data synchronous reproduction apparatus of Claim 1,
The data synchronous reproduction control unit
In the process data displayed on the monitor, when the data at a specific timing is specified, the record number of the specified data is determined based on the sampling interval of the data and the frame period of the image frame. Converting to the frame number, outputting the converted frame number to the image data reproduction unit, and reproducing the image data having the converted frame number,
A data synchronous reproduction apparatus characterized by the above.
The data synchronous reproduction apparatus according to claim 1 or 2, further comprising:
In the process data displayed on the monitor, when a range of data to be stored as a separate file is designated by external input, the record number of the data in the designated range is set to the sampling interval of the data and the image frame. A frame number of the image frame based on the frame period, and a synchronized image frame selection unit that selects an image frame in a range synchronized with the data in a specified range;
A synchronous storage control unit that stores the data in a range specified by an external input and the image frame in a range selected by the synchronous image frame selection unit as the same file;
A data synchronous reproduction apparatus comprising:
In the data synchronous reproduction device according to any one of claims 1 to 3,
Based on an external input, an image data reproduction area where the image data is displayed by the image data reproduction unit and a process data reproduction area where the process data is displayed by the data synchronous reproduction control unit are set on the monitor. And a screen layout setting unit for setting the number and size of image data to be reproduced within a predetermined condition in the image data reproduction area,
A data synchronous reproduction apparatus comprising:
Storing a plurality of image frames captured by the camera as the image data together with a frame number of each image frame by assigning a frame number to each image frame;
Storing a plurality of data acquired in a time series from the monitoring target as process data together with a sampling number of the data by assigning a record number to each data;
When the image data is output to the monitor and reproduced and the frame number of the image frame to be reproduced is output, the output frame number is determined based on the frame period of the image frame and the sampling interval of the data. Converting the record number of the data and reproducing the data having the converted record number on the monitor;
A data synchronization control method comprising:
The data synchronization control method according to claim 5, wherein
In the process data displayed on the monitor, when the data at a specific timing is specified, the record number of the specified data is determined based on the sampling interval of the data and the frame period of the image frame. To convert the frame number into the image data and reproduce the image data having the converted frame number.
And a data synchronization control method.
The data synchronization control method according to claim 5 or 6, further comprising:
In the process data displayed on the monitor, when a range of data to be stored as a separate file is specified, the record number of the data in the specified range is set to the sampling interval of the data and the frame period of the image frame. Converting the frame number of the image frame on the basis of and selecting an image frame in a range synchronized with the data in a specified range;
Storing the data in the specified range and the image frames in the selected range as the same file;
A data synchronization control method comprising:
The data synchronization control method according to any one of claims 5 to 7, further comprising:
Based on an external input, an image data reproduction area where the image data is displayed by the image data reproduction unit and a process data reproduction area where the process data is displayed by the data synchronous reproduction control unit are set on the monitor. And setting the number and size of image data to be reproduced within a predetermined condition in the image data reproduction area;
A data synchronization control method comprising:
On the computer,
Storing a plurality of image frames captured by the camera as the image data together with a frame number of each image frame by assigning a frame number to each image frame;
Storing a plurality of data acquired in a time series from the monitoring target as process data together with a sampling number of the data by assigning a record number to each data;
When the image data is output to the monitor and reproduced and the frame number of the image frame to be reproduced is output, the output frame number is determined based on the frame period of the image frame and the sampling interval of the data. Converting the record number of the data and reproducing the data having the converted record number on the monitor;
A data synchronization control program characterized in that
The data synchronization control program according to claim 9, further comprising:
In the process data displayed on the monitor, when the data at a specific timing is specified, the record number of the specified data is determined based on the sampling interval of the data and the frame period of the image frame. A data synchronization control program that executes the step of converting the frame number into the frame number and reproducing the image data having the converted frame number.
The data synchronization control program according to claim 9 or 10, further comprising:
In the process data displayed on the monitor, when a range of data to be stored as a separate file is specified, the record number of the data in the specified range is set to the sampling interval of the data and the frame period of the image frame. Converting the frame number of the image frame on the basis of and selecting an image frame in a range synchronized with the data in a specified range;
Storing the data in the specified range and the image frames in the selected range as the same file;
A data synchronization control program characterized in that
In the data synchronization control program according to any one of claims 9 to 11, further comprising:
Based on an external input, an image data reproduction area where the image data is displayed by the image data reproduction unit and a process data reproduction area where the process data is displayed by the data synchronous reproduction control unit are set on the monitor. And setting the number and size of image data to be reproduced within a predetermined condition in the image data reproduction area;
A data synchronization control program characterized in that