JPH09238307A - Recording and reproducing device for monitor video image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which efficiently records/reproduces a video image of a monitor camera installed at a play spot or the like. SOLUTION: A video signal obtained from a video camera 4-11 catching a ball rental machine 1-1 in its sight is compressed by a processing and recording unit 5-11 and compression data by a prescribed frame are recorded endless while designating a cyclic address to a RAM 28 in the unit 5-11 at all times. When a sensor S11 detects the case that the door of the ball rental machine 1-1 is open, the writing to the RAM 28 is stopped and the data are stored and compressed data by a prescribed frame obtained after that are transferred to a video disk recorder(VDR) 7 earlier and then the data in the RAM 28 are transferred. Only a video image for a prescribed time before and after when the monitor is required is recorded and the equipment number and time data are transferred in addition based on a sensing signal from the sensor S11, then retrieval and reproduction are simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance image recording / reproducing apparatus, and is applied to an apparatus for recording / reproducing an image while monitoring the presence / absence of fraudulent activity on each device installed in a playground or the like. The present invention relates to an improvement for recording an image only in a predetermined time period before and after including a time when a misbehavior has occurred or a time when it may occur, and efficiently reproducing the video.

[0002]

2. Description of the Related Art Pachinko halls and game arcades are prosperous in the leisure industry, but fraudulent acts on ball lending machines, counting machines, and game machines installed in stores are frequently performed by visitors and shop assistants. , The damage is in the present situation that cannot be ignored for sales.

Therefore, in pachinko halls and the like, a video camera having the above-mentioned devices in the field of view is installed, and the monitoring center side monitors the presence or absence of fraudulent activity. In recent years, where fraudulent acts have become increasingly sophisticated, it is extremely difficult for a person in charge to monitor all the monitors while keeping a large number of video cameras in an ON state at all times. Also,
Even if a fraudulent activity is detected, the evidence cannot be pointed out only by monitoring the real-time situation while watching the monitor.

As a measure against the problem, there has been proposed a video surveillance device which drives a video camera and displays the image on a monitor only when a misconduct has occurred or may occur in each device (effective). Flat 3-31340
issue). The proposal is "a detection means that outputs a synchronization signal when a preset state occurs in a pachinko hall device,
A camera that is arranged so that the device for the pachinko hall and its surroundings can be photographed and that is driven when the synchronization signal is output, and at least the cause of output of the synchronization signal when the synchronization signal is output. A data signal generating circuit for generating data indicating the type of the setting state, a transmission system for transmitting the data from the signal generating circuit and the image by the camera, and a display for displaying the data and the image by the transmission signal from the transmission system. Monitoring device for pachinko halls that is equipped with a section. In addition, in the proposal, it is also disclosed that "still image data and a data signal transmitted by a transmission system are sequentially recorded, and a keyword corresponding to the data signal is displayed on a monitor".

Therefore, in the proposed video surveillance device,
Since it is sufficient for the person in charge at the surveillance center side to monitor only the monitor on which the image is displayed, it is possible to effectively confirm the illegal act for the pachinko hall device and to appropriately deal with the illegal act.

[0006]

By the way, according to the above-mentioned proposal, the camera is activated when a preset state (a state where a misbehavior occurs or a state in which it may occur) is detected. , The video information after that time can be obtained, but the video information before that can not be obtained. In general, when a fraudulent activity is performed, it is difficult to judge whether the fraudulent activity was actually performed even if the video after the occurrence of the misconduct is observed. Is often revealed.

Therefore, in the present invention, a detection means is provided in the device to detect the occurrence of the misbehavior or the state in which the misbehavior is likely to occur. It was created for the purpose of providing a monitor video recording / reproducing apparatus capable of recording only video information of time and capable of quickly and easily searching the recorded video information for display and reproduction.

[0008]

SUMMARY OF THE INVENTION A first invention is a video camera in which a device to be monitored is in the field of view, and a detection signal indicating the fact when the condition of the device reaches a predetermined condition requiring monitoring. Detecting means for outputting, the compression means for compressing the output video signal of the video camera in field units or frame units, and the field data or frame data compressed by the compression means (hereinafter referred to as "unit compression data"). Storage means capable of storing a number corresponding to the time required for monitoring before the occurrence of facts, storage means capable of storing a large amount of unit compressed data, and usually a write address for the storage means is circulated. However, when each unit compressed data obtained from the compression means is written in the storage means in an endless manner and a detection signal is input from the detection means, And a unit obtained from the compression unit after a detection signal is input from the detection unit and a write control unit that stops the writing operation of the unit and holds each unit compressed data stored in the storage unit at that time. The compressed data is transferred to the storage means by the number corresponding to the monitoring required time after the occurrence of the fact, and after the transfer is completed, each unit compressed data stored in the storage means is sequentially read according to the address cyclic method. And a transfer control unit for transferring to the storage unit, wherein the storage unit successively stores the data transferred from the transfer control unit.

According to the present invention, since the write control means executes the endless recording to the storage means, when the detection signal is input from the detection means, it corresponds to the monitoring required time before that point. It is possible to store as many unit compressed data as necessary in the storage means. Then, the transfer control means first transfers in real time the number of unit compressed data corresponding to the required monitoring time after that time to the accumulating means, and thereafter the unit compressing data held in the storing means is accumulated in the accumulating means. Since it is transferred to, it is possible to sequentially accumulate the video information of the monitoring required time before and after the time when the device needs to be monitored. In that case, it is desirable that each compressed unit data to be transferred has a time-series property as a whole, but the transfer control means sequentially starts from the unit compressed data of the address next to the address at the time when the detection signal is input. If the data is read out and transferred to the storage means, the time series property of the unit compressed data group for each transfer can be secured. Further, the unit compressed data group transferred by the transfer control unit before and after has a reversed time series of the video when viewed in group units, but the storage unit is arranged so that the time series is maintained in the order of reading from the storage unit. By arranging and accumulating at the address position of, it is possible to secure the complete time-series property of the video during reproduction. In the present invention, the storage means need only store a fixed number of unit compressed data before the input of the detection signal, and therefore the storage means can have a small capacity.

The second invention is similar to the first invention in the functions of the video camera, the detecting means, the compressing means, and the accumulating means, but the storage means has a larger capacity than that of the first invention. The unit compression data compressed by the compression means can be stored by the number corresponding to the total time required for monitoring before and after the occurrence of the fact that the state of the device has reached a predetermined state requiring monitoring. And that the write control means continuously writes the unit compressed data of a number corresponding to the monitoring required time after the occurrence of the fact based on the input of the detection signal, and the transfer control means is the write control means. This is different from the first invention in that it has a function of reading out the unit compressed data according to the address cyclic method at the time of writing after each unit compressed data of the storage means is held by the storage means.

That is, by utilizing the endless writing method for the storage means, when the fact occurs, all unit compressed data relating to the monitoring required time before and after the fact occurrence is stored and held in the storage means. The unit control data held by the transfer control means is transferred to the storage means at one time. In this case as well, it is desirable that each unit compressed data transferred has time series as a whole, but the unit compression corresponding to the address next to the address finally written by the transfer control means. If the data is read from the data, the time series property can be secured. Therefore, it is not necessary to separately transfer each unit compressed data input in real time and each unit compressed data held in the storage unit, and the storage unit side can adjust the time series as in the first invention. There is no need to adjust the storage address.

According to a third aspect of the present invention, there are a plurality of devices to be monitored, and a video camera and a detection device, a compression device, a storage device, a storage device, a writing control device, and a transfer control device are provided in association with each device. Regarding the case where the following processing / recording unit is provided. In that case, the time zones for transferring the unit compressed data from the respective processing / recording units to the storage means may overlap, and the single storage means cannot store both transfer data at the same time. In particular, in the case of the processing / recording unit according to the first aspect of the present invention, since unit compressed data input in real time is handled, the storage means must always accept the transfer data.
Therefore, in the present invention, the receiving buffer means is provided to constantly receive the transfer data from each processing / recording unit, and the data of the processing / recording unit previously received / stored by the receiving buffer means is accumulated in the accumulating means. The problem of is solved.

According to a fourth aspect of the invention, in the surveillance video recording apparatus according to the third aspect of the invention, each processing / recording unit is provided with a clocking means for measuring an input time of a detection signal from the detection means, and each processing / recording unit is provided with a clocking means. When the transfer control means transfers each unit compressed data to the storage means, the time data measured by the timekeeping means and the specific data of the corresponding device are transferred as additional data, and one device is monitored. When a plurality of detecting means are provided for each item, the monitoring item is judged based on the input signal from each of the detecting means, and the monitoring item data is transferred as additional data together with the additional data. It was decided. This invention considers the convenience at the time of searching and reproducing video data, which will be described later, and has a so-called time stamper function, and at the transfer stage, the relationship between the monitoring video and the device and the relationship between the monitoring video and the monitoring item. Correspond.

A fifth aspect of the invention relates to a reproducing apparatus for decompressing each unit compressed data accumulated by the accumulating means in the surveillance image recording apparatus of the fourth aspect and displaying the time-series image on a monitor, which corresponds to additional data. The specified input means for inputting the search item to be searched, and when one or more search items are input from the specified input means, the input data is used as a search key to search the additional data of the accumulating means and correspond to the corresponding additional data. By providing search means for reading out each unit compressed data accumulated in time series, and inputting desired search items to the designated input means, the monitor video corresponding to the search items is selectively selected. It is designed to be played back. According to the present invention, an operation panel for inputting search items corresponding to additional data is provided, and by simply specifying and inputting, it is possible to sequentially display images matching the specified condition on the monitor, which is convenient for use. A good playback device is realized.

In addition, when the monitor video is reproduced, the contents of the additional data corresponding to the search key are first read and reproduced for a fixed time on the monitor, and then the corresponding unit compressed data are read in time series. If played back, the monitoring video can be viewed after first checking the monitoring conditions on the screen.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a "monitoring video recording / reproducing apparatus" of the present invention will be described in detail below with reference to the drawings. << Embodiment 1 >> First, FIG. 1 shows a circuit configuration diagram of a monitoring system installed in a pachinko hall according to Embodiment 1. As shown in FIG.
In the figure, 1-1 to m are ball lending machines, 2-1 to n are pachinko ball counters, 3-1 to p are pachinko game machines, and 4-ij (i = 1,2,3, j = 1
~ M, 1 ~ n, 1 ~ r) is a block group of individual ball lending machines 1-1 ~ m, counters 2-1 ~ n and pachinko game machines 3-1 ~ p (divided into r blocks) Video cameras for surveillance, each of which is in the field of view, S11 to S1m are specified when the door of each ball lending machine 1-1 to m is opened or when an alarm condition occurs such as when an illegal card is used Sensor that outputs the signal of S21-
S2n is a sensor that outputs a specific signal when each of the counters 2-1 to 2-n is in the count start state or in the alarm state, and S31 to S3p are the pachinko game machines 3-1 to p in the fever state. A sensor that outputs a specific signal when a door is opened, when a door is opened, or when an alarm occurs, 5-ij is a processing / recording unit provided corresponding to each video camera 4-ij, 6 is a communication I / F having a reception buffer function for receiving the data transferred from each processing / recording unit 5-ij and temporarily accumulating the data, and 7 is a video disc (sequentially storing the data received by the communication I / F 6). VD) 8 is a video disk recorder (VDR) for recording and storing, 9-ij is a monitor for displaying monitoring video using the video signal (Vij) output from each processing / recording unit 5-ij, 10 is monitoring video For inputting instructions related to display and playback of , 11 each processing and recording unit control data corresponding to the instruction input of the operation unit 105
-ij and the external control I / F output to the communication I / F 6. Here, each device 1-1 ~ m, 2-1 ~ n, 3-1 ~ p and each video camera 4-ij
All except the sensors S11 to S1m, S21 to S2n, and S31 to S3p are installed on the monitoring center side.

Further, each of the above-mentioned processing / recording units 5-ij
Is an A / D converter 21 for converting a video signal input from each corresponding video camera 4-ij into digital data, and an A / D converter 21.
Frame memory that stores D-converted frame data
22, a D / A converter 23 for converting the frame data expanded in the frame memory 22 into an analog signal, and a predetermined process for the D / A converted analog video signal to output to each corresponding monitor 9-ij Signal processing unit 24, CPU 25 and timer
A microcomputer circuit including 26, ROM 27, RAM 28, and I / O port 29 (hereinafter referred to as "microcomputer circuit")
And the character table 30 connected to the bus of the microcomputer circuit, similarly connected to the bus of the microcomputer circuit by compressing image data (pixel block data) input from the raster / block converter 32 described later. Input from the encoder / decoder 31 and the JPEG-encoder / decoder 31 that outputs the compressed video data transferred from the communication I / F 6 to the microcomputer circuit to the raster / block converter 32 described below. The 8 × 8 pixel block data is converted into one-dimensional data on the time axis and written in the frame memory, and conversely, the frame data in the frame memory 22 is read out every 8 lines and converted into 8 × 8 pixel block data. And a raster / block converter 32 for outputting to a encoder / decoder 31. In addition, R of the microcomputer circuit
The OM 27 stores a program for executing the overall operation control of the processing / recording unit 5-ij incorporating the OM 27 and the address control and data transfer control described later. Further, in the first embodiment, the RAM 28 has 60 frames. It is assumed to have a work area for storing minute compressed frame data and a spare area for storing a small amount of code data.

Then, each processing / recording unit 5-ij normally executes the following two types of operations in parallel. (1) A / D the video signal input from the video camera 4-ij
Through the signal system of the converter 21 → frame memory 22 → D / A converter 23 → signal processing unit 24, it is output to the corresponding monitor 9-ij, and the image of the monitored area is constantly displayed on each monitor 9-ij. (2) As shown in the flow chart of FIG. 2, the frame data of the input video compressed by the encoder / decoder 31 is continuously written by the endless recording method while circulating the write address to the RAM 28. That is, A / D converter 21 → frame memory 22 → raster / block converter 32 →
Encoder / decoder 31 → Advances the address each time compressed frame data is taken in through the signal system consisting of the bus order of the microcomputer circuit, and rewrites the old data at the advanced address to the latest compressed frame data taken in. The data is recorded in the RAM 28, and when the address reaches A (59), the write address is returned to A (0) and rewritten to the next compressed frame data for recording. as a result,
As shown in FIG. 3, when the write address at the present time is A (n), compressed frame data [D (x-59) to D (x)] for 60 frames corresponding to 2 seconds before the current time is It will be recorded. Incidentally, x is a value indicating an arbitrary time series number of the frame.

Next, when the signal Qij is detected from the sensor Sij in the above-mentioned normal operation state, the processing / recording unit 5
The operation of -ij will be described with reference to the flowchart of FIG. First, when the sensor signal Qij is detected, the CPU 25
Sets the interrupt mode (F41, F42), detects the time data T of the timer 26 and saves it in the spare area of the RAM 28 (F
43). When the compressed frame data input at the time of detecting the sensor signal Qij is written in the RAM 28, the writing to the RAM 28 is immediately stopped and the compressed field data for 60 fields written at that time is held. Allow (F44).

Then, the device identification data relating to the device corresponding to the processing / recording unit 5-ij and the state data indicated by the sensor signal Qij are converted into character data in the character table 30, and the time data T saved above is converted. The character data for displaying the date and time is created based on the above, and these data are transmitted via the I / O port 29 to the communication I / F6 on the VDR7 side
Transfer to (F45). This transfer operation can be executed in parallel with the operation of F44.

By the way, the processing / recording unit 5-ij receives the video signal from the video camera 4-ij in real time, and at the stage of transferring the device specifying data, the encoder.
/ The next compressed frame data is output from the decoder 31 to the bus, but the CPU 25 uses the compressed frame data that is input after the writing to the RAM 28 is stopped to the I / O port 2
It is transferred to the communication I / F6 on the VDR7 side via 9 (F46).

The number of transfer frames of the compressed frame data in this case is set to 60, which is the same as the number of frames stored in the RAM 28, and the CPU 25 immediately outputs the output of the encoder / decoder 31 at the stage of transferring 60 frames. It is stopped, the reading of the compressed frame data held in the RAM 28 is started, and the read data is transferred from the I / O port 29 to the communication I / F 6 on the VDR 7 side (F46 to F4).
8). However, when reading from the RAM 28, the address of the compressed frame data last written to the RAM 28 is confirmed as the address designation method, and the compressed frame data of the address held at the next address according to the cyclic method is confirmed. Read from. That is, in FIG.
When the sensor signal Qij is input during writing to the address A (n), the read address is changed from A (n + 1) to A (59) → A.
Specify in the order of (0) to A (n), and set the compressed frame data to D [x-5
9] to D [xn-1] → D [xn] to D [x] (that is, D [x-59] to D
[x]) are read in chronological order.

When the transfer of the compressed frame data for a total of 120 frames is completed in this way, the CPU 25 releases the interrupt mode set above and the RA shown in FIG.
Restore the endless recording status for M28 (F49, F5
0). Since the video display on each monitor 9-ij is performed by the signal system that does not involve the microcomputer circuit, the monitor video is always displayed on each monitor 9-ij regardless of whether the interrupt mode is set or not. ing.

On the other hand, on the VDR7 side, each processing / recording unit
Based on the procedure shown in Fig. 4-from 5-ij [Device specific data,
Communication of [state data, date / time data], [real-time compressed frame data for 60 frames after the sensor signal Qij is input] and [60 frame compressed frame data before the sensor signal Qij is input] Received by I / F6. In that case, the sensors S21 to S2n of the counters 2-1 to n
Since the sensors S31 to S3p of the pachinko game machines 3-1 to p often output sensor signals due to the nature of the detected items, the processing corresponding to those devices 2-1 to n, 3-1 to p. Recording unit
The data is frequently transferred from 5-ij, and it is often the case that a plurality of data must be received in the same time zone. However, the communication I / F 6 has a reception buffer function, and even if the data transfer is duplicated as described above, all the data is accepted, temporarily stored in the internal memory, and received first. Since data is sequentially transferred to VDR7 and recorded in VD8, there is no problem due to duplication of data reception time. Further, since each transfer data is only compressed frame data for 120 frames at most and some character data, it is enough to expect that the transfer frequency is about once every few seconds on average. It is sufficient that the communication I / F 6 has a built-in memory capacity that is not so large.

By the way, the communication I / F 6 receives data in the above-mentioned order, but each compressed frame data group for 60 frames is reversed in time series in terms of the group unit. That is, when the sensor signal Qij is present at the timing shown in FIG. 3, the compressed frame data D [x +
1] to D [x + 60] are received first, and then the compressed frame data D [x-59] to D [x] are received. There is. So VDR7
When the received data is stored in the VD8, unlike the receiving order, the compressed frame data for 120 frames is arranged and recorded in the time series order with respect to the read address from the VD8 as shown in FIG. . If the read addresses are sequentially specified in the arrangement shown in the figure, 120 fields of compressed field data D [x-59] to D [x + 60] are sequentially displayed following [device specific data, status data, date / time data]. Will be read.

In this embodiment, the storage capacity of the RAM 28 is set to 60 frames, and the number of frames transferred after the input of the sensor signal Qij is 60 frames. T in NTSC system
The V video signal is 30 [frames / sec], and when observing and checking fraudulent acts in a pachinko hall, if you can see the replay video for 2 seconds before and after the fact occurrence, you can fully check it. It is based. Therefore, if it is desired to lengthen the image before the fact occurrence, it can be dealt with by increasing the capacity of the RAM 28, and if it is necessary to lengthen the image before the fact occurrence, the number of frames to be transferred later may be increased. Naturally, there are disadvantages that the cost of the device becomes high and the number of records that can be recorded in the VD8 becomes small.

<< Embodiment 2 >> The circuit configuration diagram of the monitoring system in this embodiment is exactly the same as that of FIG. 1 except that the RAM 28 stores 60 frames of compressed field data in the first embodiment. However, the second embodiment is different in that it is doubled for 120 frames, and the procedure for writing / reading compressed frame data to / from the RAM 28 is different.

In the processing / recording unit 5-ij of this embodiment, similarly to the first embodiment, the compressed frame data of the video signal obtained from the video camera 4-ij is endlessly recorded in the RAM 28 by the cyclic address method. The procedure is expressed only by correcting the determination of F25 in FIG. 2 as "N = 119?". Therefore, the compressed frame data is written in the RAM 28 in this embodiment in the cyclic address system in the manner as shown in FIG.

Next, the processing / recording unit 5-ij when the signal Qij is input from the sensor Sij in the normal operation state.
The operation of will be described with reference to the flowchart of FIG. In the figure, the procedure from F71 to F73 is the same as that of the first embodiment, but in this embodiment, writing to the sensor RAM 28 is not stopped even when the signal Qij is input,
The writing in the cyclic address method is continued for 60 frames as it is, the writing to the RAM 28 is stopped at the time when the writing for 60 frames is performed, and the compressed frame data at that time is held (F74 to F76).

Specifically, address A in FIG.
If a sensor signal Qij is input at the time when the compressed frame data is written in (n), the next address A (n
The compressed frame data previously written to the addresses after +1) are input in real time even after the sensor signal Qij is input. The compressed frame data D [x + 1], D [x + 2], ...・
The writing is stopped when the rewriting is performed for 60 frames. Therefore, the compressed frame data written in the RAM 28 when the writing is stopped by the writing (rewriting) is D [x-59] to D [x].
.About.D [x + 60], and the compressed frame data for 60 frames before and after (the total of 120 frames) is written with the input point of the sensor signal Qij as the temporal center.

Therefore, the CPU 25 of the microcomputer circuit sends the device identification data corresponding to the sensor signal Qij to the I / O port 2
D in compressed frame data D [x-59] to D [x + 60] held immediately after being transferred to VDR7 side via 9
The compressed frame data is read by sequentially designating from the address in which [x-59] is written by the cyclic address method and similarly transferred to the VDR7 side (F77 to F79). The address corresponding to D [x-59] corresponds to the address next to the address where the compressed frame data was finally written. And
When the transfer of 120 frames is completed, the interrupt mode is released and the write mode is returned to the normal operation mode (F80).

On the other hand, on the VDR7 side, the transfer data is received by the communication I / F6 and the VDR7 records the transfer data in the VD8. In this embodiment, the sensor signal Qij is used.
Since the compressed frame data is not transferred separately before and after the input of, and the time series property of each compressed frame data is guaranteed by the above-mentioned reading procedure, the VDR 7 transfers the transferred data as shown in FIG. It is enough to record in VD8 in the same order.

<Third Embodiment> This embodiment is different from each of the above-described embodiments and relates to a reproducing apparatus for reading each compressed frame data group recorded / accumulated in the VD8 and reproducing it on a monitor. The reproducing apparatus in this embodiment includes an operation unit 10 shown in FIGS. 1 and 9, an external control I / F 11, a communication I / F 6 and a VDR 7. Here, on the input panel surface 10a of the operation unit 10, the keys and L
A CD 50 is provided, and the search information is designated while confirming the instruction input by the key operation on the LCD 50.

Then, the search designation data by the key operation is transferred from the built-in microcomputer circuit 51 to the communication I / F6 via the external control I / F11, and VDR7 is recorded in VD8 using the search designation data. Search the compressed frame data group. The data transferred to the microcomputer circuit of each processing / recording unit 5-ij via the external control I / F 11 is
Control data for designating which monitor 9-ij reproduces the compressed frame data group recorded in VD8, and for setting each processing / recording unit 5-ij corresponding to the monitor 9-ij to the VD reproduction mode. Is.

By the way, in each of the above embodiments,
As shown in FIGS. 5 and 8, each compressed frame data group is recorded / stored in the VD 8 in correspondence with index data [device specific data, status data, date / time data]. On the other hand, on the input panel surface 10a of the operation unit 10 shown in FIG. 9, a device identification key (each key of a ball lending machine / counter / pachinko game machine and a numeric keypad for specifying a device number)
And status designation key (door open / alarm / count / fever designation key) and date / time and time zone designation key
(Numeric keypad) is provided, and 1 or 2 can be selected with those keys.
By specifying the above conditions and pressing the execute key, VD
The search condition can be set in R7.

Therefore, the VDR 7 to which the search condition is given searches only the index data of the VD 8 using the search condition as a search key, and reads the compressed frame data group recorded / stored corresponding to the corresponding index data. , A monitor that is specified in advance via the communication I / F8
Transfer to the processing / recording unit 5-ij that can output to 9-ij.
Then, the processing / recording unit 5-ij which is set in the VD playback mode in advance transfers the compressed frame data group transferred from the VDR7 side to the I / O port 29 → bus → encoder /
The monitor image retrieved through the signal system of decoder 31 → raster / block converter 32 → frame memory → D / A converter 23 → signal processing unit 24 → monitor 9-ij is displayed.

For example, from the input panel surface 10a of the operation unit 10, "ball lending machine", "device number = ○○○", "date and time = □□ month □□ day ☆☆
When "hour to □□ month □□ day ★★ hour" is specified, all the compressed frame data groups whose index data satisfies the condition are read out, and the specified monitor sequentially monitors every 2 seconds as shown in FIG. The image will be displayed. In particular, in this embodiment, the index data relating to the video is displayed on the screen as character information before the video is reproduced. Therefore, the operator (the person in charge of monitoring) can first clearly confirm only the condition of the monitor video with the text information, and then watch the monitor video corresponding to the condition. Further, according to the display method, there is no problem that a part of the image is not seen due to the character information as in the case of superimposing the condition on the monitoring image.

In the first, second, and third embodiments described above, frame data is handled as a unit, but it is also possible to process in field data units. Also, if it is not necessary to completely reproduce the time-series frame data or field data, and the surveillance purpose can be achieved even with intermittent video images, thin out the frame data or field data appropriately. The amount of data per unit time is reduced, the capacity of RAM 28 is reduced, and VD
It is also possible to increase the number of recordings accumulated in.

[0039]

[Effects of the Invention] "Recording / reproducing apparatus for surveillance video" of the present invention
Has the following effects by having the above configuration. According to the invention of claim 1, by using the endless recording method for a small-capacity storage means, video data of a required monitoring time before the time when the state of the device needs to be monitored and the required monitoring time after that time is accumulated. It is possible to automatically store in the storage means, and to store a large amount of video data only in the required time zone in the storage means. In particular, it is extremely effective to record an image of a fraudulent act in a playground or the like, not only after the act has occurred, but also before the occurrence, and the present invention is most suitable for recording such an image. To provide various devices. The invention of claim 2 has the disadvantage of requiring a larger capacity of the storage means than the case of claim 1, but achieves the same effect and, unlike the case of claim 1, stores the time series of the video data while maintaining the storage means. There is an advantage that can be transferred to. According to a third aspect of the present invention, even when there are a plurality of monitoring target devices and a condition that requires monitoring for each device frequently occurs, the video data of the monitoring required time is accumulated in a single accumulating means. To enable that. According to the inventions of claims 4 and 5, when a plurality of monitoring target devices exist, the recording time of the video, the device specific data, and the monitoring item data are associated with each monitoring video data as additional data to the storage means. By recording and accumulating, the later retrieval efficiency will be improved. The invention of claim 6 provides a reproducing apparatus corresponding to the inventions of claims 4 and 5, and makes it possible to efficiently search and reproduce a desired surveillance video by a simple operation. According to a seventh aspect of the present invention, in the reproducing apparatus according to the sixth aspect, the contents of the additional data and the monitor image are separately displayed, the monitor condition is confirmed on the display screen, and the monitor image not disturbed by the character information is displayed. It is possible to display.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of a pachinko hall monitoring system according to an embodiment of a “monitoring video recording / reproducing device” of the present invention.

FIG. 2 is a flowchart showing a procedure of writing compressed frame data to a RAM in the endless recording method.

FIG. 3 is a diagram showing a time-sequential writing state of RAM addresses and compressed frame data in the first embodiment.

FIG. 4 is a flowchart showing an operation procedure of a processing / recording unit when a signal is detected from a sensor in the first embodiment.

FIG. 5 is a diagram showing a recording mode of additional data and compressed frame data on a video disk (VD) according to the first embodiment.

FIG. 6 is a diagram showing a time-series writing state of RAM addresses and compressed frame data according to the second embodiment.

FIG. 7 is a flowchart showing an operation procedure of a processing / recording unit when a signal is detected from a sensor in the second embodiment.

FIG. 8 is a diagram showing a recording mode of additional data and compressed frame data on a video disk (VD) according to a second embodiment.

FIG. 9 is a plan view of an input panel surface of an operation unit and a connection relationship between the operation unit and a VDR side and a processing / recording unit in relation to the third embodiment.

FIG. 10 is a diagram showing a transition of a monitor screen when a search condition is designated in relation to the third embodiment.

[Explanation of symbols]

1-1 ~ m ... ball lending machine, 2-1 ~ n ... counting machine, 3-1 ~ p ... pachinko game machine, 4-11 ~ 1 m, 4-22 ~ 2n, 4-31 ~ 3r ... video camera,
5-11 ~ 1m, 5-22 ~ 2n, 5-31 ~ 3r ... Processing / recording unit, 6 ...
Communication I / F, 7 ... VDR, 8 ... VD, 9-11 to 1m, 9-22 to 2n, 9
-31 to 3r… Monitor, 10… Operating part, 10a… Input panel surface, 11
External control I / F, 21 ... A / D converter, 22 ... Frame memory, 23 ... D / A converter, 24 ... Signal processing unit, 25 ... CPU, 2
6 ... Timer, 27 ... ROM, 28 ... RAM, 29 ... I / O port, 30 ... Code table, 31 ... Encoder / decoder, 3
2 ... Raster / block converter, 50 ... LCD, 51 ... Microcomputer circuit.

Claims (7)

[Claims] 1. A video camera in which a device to be monitored is included in the field of view, a detection unit which outputs a detection signal indicating the fact when the condition of the device reaches a predetermined state requiring monitoring, and the video camera. The compression means for compressing the output video signal of the field unit or the frame unit, and the field data or the frame data compressed by the compression means (hereinafter referred to as "unit compression data") correspond to the required monitoring time before the occurrence of the fact. Storage unit capable of storing a desired number of unit compression data, storage unit capable of storing a large amount of unit compressed data, and each unit compression obtained from the compression unit while circulating the write address to the storage unit. Data is written in the storage means in an endless manner, and when a detection signal is input from the detection means, the write operation is stopped. At the same time, the write control means for holding each unit compressed data stored in the storage means at that time, and the unit compressed data obtained from the compression means after the detection signal is input from the detection means are used to generate the fact. Transfer for transferring to the accumulating means by a number corresponding to the subsequent monitoring required time, and after completion of the transfer, sequentially reading each unit compressed data held in the memory means according to the address cyclic method and transferring to the accumulating means. And a control means, wherein the storage means successively accumulates the data transferred from the transfer control means. 2. A video camera in which a device to be monitored is included in the field of view, a detection unit which outputs a detection signal indicating the fact when the condition of the device is in a predetermined state requiring monitoring, and the video camera. Compressing means for compressing the output video signal in units of fields or frames, and storing unit compressed data compressed by the compressing means in a number corresponding to the total time required for monitoring before and after the occurrence of the fact. Storage means capable of storing a large amount of compressed unit data, and normally, storing unit compressed data obtained from the compressing means in the storing means while circulating a write address to the storing means. When data is written by the endless method and a detection signal is input from the detection means, a number of unit compressed data corresponding to the monitoring required time after the occurrence of the fact is written. After the writing operation is stopped, the writing operation is stopped, and at the same time, the writing control means for holding each unit compressed data stored in the storage means, and the writing control means after the writing control means holds each unit compressed data A transfer control means for reading out the unit compressed data being held according to the address cyclic method and transferring it to the accumulating means, wherein the accumulating means successively accumulates each unit compressed data transferred by the transfer controlling means. Characteristic surveillance video recording device. 3. When there are a plurality of devices to be monitored, a video camera and a detecting means are associated with the respective devices.
Also, a processing / recording unit including a compression means, a storage means, a writing control means, and a transfer control means is provided, and the storage means receives the unit compressed data transferred from each processing / recording unit and temporarily stores it. The monitoring video recording apparatus according to claim 1 or 2, wherein a buffer means is provided, and the storage means sequentially stores the data of the processing / recording unit received / stored by the reception buffer means. 4. The monitoring video recording apparatus according to claim 3, wherein each processing / recording unit is provided with a time measuring means for measuring an input time of a detection signal input from the detecting means,
A monitoring video recording apparatus, wherein when the transfer control means of the recording unit transfers each unit compressed data to the storage means, the time data measured by the time measuring means and the corresponding specific data of the device are transferred as additional data. 5. The surveillance video recording apparatus according to claim 4, wherein when a plurality of detection means are provided for each surveillance item for one device, the transfer control means inputs from each of the detection means. A monitoring video recording device that determines a monitoring item based on a signal and transfers the monitoring item data as additional data together with time data and device specific data. 6. A reproducing apparatus for expanding each unit compressed data accumulated by the accumulating means in the monitoring image recording apparatus according to claim 4 or 5 and displaying the time-series image on a monitor, corresponding to the additional data. Designated input means for inputting search items, and when one or more search items are input from the designated input means, the additional data of the accumulating means is searched using the input data as a search key to find the corresponding additional data. By providing search means for reading out each unit compressed data accumulated in correspondence with each other in time series, and inputting desired search items to the designated input means, a monitor image corresponding to the search items is selected. A playback device for surveillance video that is played back manually. 7. The monitor video reproducing apparatus according to claim 6, wherein the content of the additional data corresponding to the search key is first displayed on the monitor for a certain period of time, and then each unit compressed data corresponding to the search key is read out. A monitoring video playback device that plays back the monitoring video.