JP2002252715A - Remote image supervisory system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote image supervisory system that can record only a changed part of image data while the image data are changing. SOLUTION: A side to be supervised is provided with a setting section 12 that compares a motion vector included in image data and a value of processing color information with initial setting values respectively to detect a start time and an end time while the image data re changing, generate a recording start signal and a recording signal depending on the detected start and end, and outputs the signals with the image data and with an xDSL modem transmission section 13 that transmits the image data or the like by using a transmission medium of a 2W metallic cable. A supervisory side is provided with an xDSL modem reception section 20 that receives the image data or the like, a detection section 22 that detects the recording start signal and the recording end signal, and a reception side storage device 23 that records image data decoded in the interval between the recording start signal and the recording end signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a monitoring apparatus in which image data obtained by compressing an image from a surveillance camera is transmitted from an xDSL modem via a 2 W metallic cable, and the monitoring apparatus converts the image data to xDSL. The present invention relates to a remote image monitoring system that monitors image data by receiving the data via a modem, decoding the image data by an image decoder, and displaying the image on a monitor.

[0002]

2. Description of the Related Art Conventionally, when a remote image monitoring system is introduced, it is costly to introduce a new dedicated line, and when an existing 2W metallic line, which is a general line, is used, there is a problem of a signal band. Video monitoring could not be done satisfactorily due to lack of information. On the other hand, xDSL (x
If a Digital Subscriber Line) modem is used, the above information shortage can be solved.

[0003]

In remote image monitoring, it is desired to monitor a change in image data.
Although a recording device is provided, conventionally, all the image data in an arbitrary designated time zone is recorded, and thereafter, in order to search for a target image for which the monitoring status should be reconfirmed, all the recorded image data are searched. Is played back, so that the burden on the user is heavy.

[0004] Further, if the line cannot be communicated for some reason, the monitoring situation during that time has not been known at all.

[0005] It is an object of the present invention to provide a remote image monitoring system capable of recording only image data while the image data changes.

Another object of the present invention is to provide a remote image monitoring system that can cope with a case where a line cannot communicate.

[0007]

According to the present invention, the monitored side includes:
An image encoder for compressing an image input from a surveillance camera for monitoring a situation at a remote place and converting the image into image data, and comparing a value obtained by processing a motion vector and color information included in the image data with an initial set value A setting unit for detecting the start and end of the change in the image data, generating a recording start signal and a recording end signal according to the detection, and outputting the signal together with the image data, and the image data from the setting unit. And a xDSL modem transmitting unit for transmitting the recording start signal and the recording end signal using a transmission medium of a 2W metallic cable, wherein the monitoring side is configured to monitor the image data and the recording transmitted via the 2W metallic cable. X for receiving a start signal and the recording end signal
A DSL modem receiver, an image decoder for decoding the image data from the xDSL modem receiver, a detector for detecting the recording start signal and the recording end signal from the image decoder, and the detector And a receiving-side storage device for recording the image data decoded during the recording start signal and the recording end signal from the remote image monitoring system.

In the present invention, the initial setting value in the setting unit is a value detected as a start of a change in the image data when a predetermined continuous change occurs in the image data. It is a remote image monitoring system.

In the present invention, the receiving side recording device records the information having small changes in the image data while treating them as one and the same image, and converts the monitoring status up to a predetermined designated time zone into a thumbnail on a monitor. This is a remote image monitoring system characterized by being easy to see.

In the present invention, the setting unit generates an alarm signal in response to detection of the start of the change in the image data, and the xDSL modem transmitting unit transmits the alarm signal to the monitoring side. It is a remote image monitoring system characterized by the following.

According to the present invention, a monitored side compresses an image input from a surveillance camera for monitoring a situation at a remote place and converts the image into image data; a motion vector included in the image data; The value obtained by processing the color information is compared with an initial setting value to detect the start and end of the change in the image data, generate a recording start signal and a recording end signal in accordance with the detection, and change the image data. A setting unit that generates an alarm signal according to the detection of the start that has occurred and outputs the generated alarm signal together with the image data; and a 2W metallic unit that outputs the image data, the recording start signal, the recording end signal, and the alarm signal from the setting unit. An xDSL modem transmitting unit for transmitting using a transmission medium of a cable is provided, and the monitoring side transmits the XDSL modem via the 2W metallic cable. xD receiving the image data and the recording start signal and said record end signal and the said alarm signal
An SL modem receiver, an image decoder for decoding the image data from the xDSL modem receiver, a detector for detecting the recording start signal and the recording end signal, and an alarm signal from the image decoder; A receiving storage device that records the image data decoded during the recording start signal and the recording end signal from the detection unit, and a monitor that displays the alarm signal from the detection unit. It is a remote image monitoring system characterized by the following.

In the present invention, the monitored side records the image data during the recording start signal and the recording end signal when the transmission medium of the 2W metallic cable cannot communicate, and reproduces the image data when the transmission is restored. And the xD
The SL modem transmitting unit is a remote image monitoring system, wherein the reproduced image data is transmitted to the monitoring side.

In the present invention, a POTS splitter transmitting unit and a POTS splitter receiving unit are arranged between the xDSL modem transmitting unit and the xDSL modem receiving unit.
Between the S splitter transmitting unit and the POTS splitter receiving unit using the transmission medium of the 2W metallic cable,
The transmission from the monitored side to the monitoring side and the POTS
By connecting an exchange to the splitter receiving unit and presetting the telephone number of the telephone corresponding to the input of the alarm signal in the exchange, a change occurs in the image data on the monitored telephone in the preset telephone. A remote image monitoring system that informs the user of the fact.

According to the present invention, there is provided a remote image monitoring system, characterized in that the previously set telephone is notified that the image data on the monitored side has changed, and the monitor is notified by e-mail.

In the present invention, the surveillance camera comprises a plurality of surveillance cameras, each monitor camera of the plurality of surveillance cameras allocates a dedicated transmission band for each surveillance camera to the image encoder unit, and the setting unit transmits the image data to the image encoder unit. When detecting the start of data change, multiplexing in which the monitoring camera monitoring the changed image data in response to the detection switches so as to preferentially use the transmission band dedicated to each monitoring camera. A remote image monitoring system comprising a device.

[0016]

FIG. 1 is a diagram showing a configuration of a remote image monitoring system according to a first embodiment of the present invention. As shown in the figure, the monitoring side and the monitoring side are configured.

The monitored side includes a monitoring camera 10 for monitoring the situation at a remote location, and an image encoder 11 for compressing an image input from the monitoring camera 10 and converting the image into image data.
And comparing a value obtained by processing the motion vector and color information included in the image data with an initial setting value to detect a start and an end in which a change has occurred in the image data, and generate a recording start signal and a recording end signal according to the detection. A setting unit 12 for generating an alarm signal in accordance with the detection of the start of the occurrence of the change in the image data and outputting the alarm signal together with the image data; the image data, the recording start signal, the recording end signal, and the alarm signal from the setting unit; XDSL modem transmitting unit 13 for transmitting the image data using the transmission medium of the 2W metallic cable, and transmitting the image data during the recording start signal and the recording end signal when the transmission medium of the 2W metallic cable is not communicable, and reproducing when the recording is restored. A side storage device 14 is provided.

The monitoring side receives the image data, the recording start signal, the recording end signal, and the alarm signal from the xDSL modem receiving section 20 sent via the 2W metallic cable, and the image data from the xDSL modem receiving section. An image decoder unit 21 for decoding, a detection unit 22 for detecting a recording start signal and a recording end signal from the image decoder unit, and an alarm signal, and a recording start signal and a recording end signal from the detection unit are decoded. A receiving storage device 23 for recording image data, and a monitor 2 for displaying decoded image data, recorded image data and an alarm signal
4 is provided.

Next, the operation will be described. On the monitored side, image data captured by the monitoring camera 10 is input to the image encoder unit 11. Image encoder unit 11
Compresses the input image and converts it into image data. The image data compressed by the image encoder 11 is transmitted to the setting unit 1
2 is input. The setting unit 12 compares a value obtained by processing the motion vector and color information included in the image data with an initial setting value to detect a start and an end in which the image data has changed, and a recording start signal and a recording corresponding to the detection. An end signal is generated, and an alarm signal is generated in accordance with the detection of the start of the change in the image data, and is output together with the image data.

FIG. 2 is a diagram showing an operation flow of the setting unit 12 in FIG. Image data 121 is input from the image encoder unit 11 in FIG. First, in S21, it is checked whether or not there is an initial setting value. If the answer is YES, in S22, it is checked whether or not the recording start signal has been generated. If yes, then in S23, it is checked whether the recording completion signal has been generated. In the case of Yes, the signal is supplied to the xDSL modem transmitting unit 13 via S26 described later.

In S21, if no, it is checked in S24 whether or not recording is currently being performed, and if no, it waits for the generation of a recording end signal in S25. S2
If YES in step 4, and if a recording end signal is generated in step S25, it is checked in step S26 whether the line of the 2W metallic cable is normal. In the case of Yes, the data is supplied to the xDSL modem transmitting unit 13. In the case of No, the data is supplied to the transmission side storage device 14, and the decoded image data is recorded between the recording start signal and the recording end signal. When the line is restored and becomes normal, the xDSL modem transmission unit 13 is automatically transmitted. To supply. Although not shown in FIG. 2, an alarm signal generated in response to the detection of the start of the change in the image data is also supplied to the xDSL modem transmitting unit 13 together with the image data, the recording start signal, and the recording end signal.

FIG. 3 is a diagram showing an operation flow on the monitoring side in FIG. First, the xDSL modem receiving unit 20
Receives the image data, the recording start signal, the recording end signal, and the alarm signal transmitted via the 2W metallic cable. Next, the image decoder 21 decodes the image data. Next, in S31, the detecting unit 22
In FIG. 1, it is checked whether a recording start signal has been detected.
If yes, the data is input to the receiving-side storage device 23 and recorded from the start of the change in the image data. Then, in S32, it is checked whether or not a recording completion signal has been generated. I do. If no, the process returns to the receiving storage device 23 to continue recording. In S31, in the case of NO, the image data is supplied to the monitor 24 to display the image data. Although not shown in FIG. 2, the alarm signal generated in response to the detection of the start of the change in the image data is also
It is supplied to a monitor 24 to indicate that a change has occurred.

In the above description, the receiving-side storage device 23
Has been described as a function of recording only a portion where a change has occurred in image data. However, the present invention is not limited to this. By switching options (not shown), image data having a small change in image data can be converted into one and the same image. By using a function to collectively record the status of a specified time zone and recording it using a function to collectively record the status of a specified time zone, the monitoring status up to a predetermined specified time zone can be easily converted to a thumbnail on a monitor. A thumbnail conversion function may be used. Of course, by switching options, in some cases,
All image data from the surveillance camera may be recorded.

FIG. 4 is a diagram showing the configuration of a remote image monitoring system according to a second embodiment of the present invention. In this embodiment, the fact that a change has occurred in the image data on the monitored
This is a configuration of a system that uses a TS splitter to notify an alarm signal to a monitoring telephone.

In FIG. 4, the same parts as those in FIG. 1 are indicated by the same reference numerals. 4 differs from FIG. 1 in that PODSL (Plain Old Telephone System) splitters 41 and 42 are provided in the xDSL image transmission apparatus. That is, between the xDSL modem transmitting unit 13 and the xDSL modem receiving unit 20, the POTS splitter transmitting unit 41 and the POT
The S splitter receiving unit 42 is disposed, and the distance between the POTS splitter transmitting unit 41 and the POTS splitter receiving unit 41 is 2
Using the transmission medium 30 of a W metallic cable, transmission is performed from the monitored side to the monitoring side, an exchange 43 is connected to the POTS splitter receiving section 42, a private telephone 44 is connected to the exchange 43, and an alarm signal is input. By setting a corresponding local telephone number in advance, it is possible to notify a preset telephone that a change has occurred in the image data on the monitored side. At that time, the exchange 4
The e-mail transmission device 45 connected to 3 can notify the supervisor of the change in the image data by e-mail.

FIG. 5 is a diagram showing the configuration of a remote image monitoring system according to a third embodiment of the present invention. The present embodiment is a diagram showing a configuration of a plurality of monitoring cameras using a multiplexing device. FIG. 5 shows a configuration in which the monitoring camera 10 in the configuration of FIG. 1 is composed of a plurality of cameras, a multiplexing unit 51 is provided, and the multiplexing unit 51 is controlled by an output of the setting unit 12.

That is, when monitoring is performed by a plurality of monitoring cameras, the multiplexing unit 51 allocates a transmission band dedicated to each monitoring camera. When the setting unit 12 detects a change in image data from a certain surveillance camera, the setting unit 12 monitors a change in the image data by using the detection signal to monitor a transmission band allocated to each surveillance camera of the surveillance camera 10. The surveillance camera switches to use the transmission band assigned to each surveillance camera preferentially. As described above, the monitoring camera monitoring changes in image data can transmit a high-definition image by preferentially using the transmission band.

[0028]

According to the present invention, it is possible to provide a remote image monitoring system capable of recording only image data while image data is changed. According to the present invention,
It is possible to provide a remote image monitoring system corresponding to a case where a line cannot communicate.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of a remote image monitoring system of the present invention.

FIG. 2 is a diagram showing an operation flow of a setting unit 12 in FIG.

FIG. 3 is a diagram showing an operation flow on the monitoring side in FIG. 1;

FIG. 4 is a diagram illustrating a configuration of a remote image monitoring system according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a remote image monitoring system according to a third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Surveillance camera, 11 ... Image encoder part, 12 ... Setting part, 13 ... xDL modem transmission part, 14 ... Transmission side storage device, 20 ... xDSL modem reception part, 21 ... Image decoder part, 22 ... Detection part, 23 ... Reception-side storage device, 24 monitor, 30 transmission medium of 2W metallic cable, 41 ...
POTS splitter transmitting unit, 42: POTS splitter receiving unit, 43: exchange, 44: private telephone, 45: mail transmission device (personal computer), 51: multiplexing unit.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C054 DA08 EB00 FC07 FC13 FE01 FE11 FF02 FF03 GB02 GB04 GD04 GD05 HA18 5C084 AA14 BB02 DD12 GG78 5C087 AA02 AA03 BB74 EE02 EE05 FF01 FF14 GG19 GG18 GG13 GG19 GG18 GG19 GG18 GG19 GG18 GG19 GG18 NN NN21 PP06 QQ11 RR12 RR27 UU19

Claims (9)

[Claims] An image encoder for compressing an image input from a surveillance camera for monitoring a situation at a remote place and converting the image into image data; a motion vector and color information included in the image data; A setting unit that compares the processed value with an initial set value, detects a start and an end in which the image data has changed, generates a recording start signal and a recording end signal corresponding to the detection, and outputs the signal together with the image data. And an xDSL modem transmitting unit for transmitting the image data, the recording start signal, and the recording end signal from the setting unit using a transmission medium of a 2W metallic cable, and a monitoring side includes: An xDSL modem receiving unit for receiving the transmitted image data, the recording start signal and the recording end signal, and receiving the xDSL modem An image decoder for decoding the image data from the image decoder; a detector for detecting the recording start signal and the recording end signal from the image decoder; and the recording start signal and the recording end signal from the detector. A remote image monitoring system, comprising: a receiving side storage device for recording the image data decoded during the period. 2. The image processing apparatus according to claim 1, wherein the initial setting value in the setting section is a value detected as a start of a change in the image data when a predetermined continuous change occurs in the image data. A remote image monitoring system characterized by the following. 3. The receiving-side recording apparatus according to claim 1, wherein the receiving-side recording device records the information having small changes in the image data while treating them as one and the same image, and monitors the monitoring status up to a predetermined designated time zone. A remote image monitoring system characterized by making it thumbnailable on the screen for easy viewing. 4. The apparatus according to claim 1, wherein the setting unit generates an alarm signal in response to detection of the start of the change in the image data, and the xDSL modem transmitting unit transmits the alarm signal to the image data. A remote image monitoring system for transmitting to a monitoring side. 5. A monitored side includes: an image encoder for compressing an image input from a surveillance camera monitoring a situation at a remote place and converting the image into image data; a motion vector and color information included in the image data; The values obtained by processing are compared with the initial setting values to detect the start and end of the change in the image data, generate a recording start signal and a recording end signal in accordance with the detection, and change the image data. A setting unit for generating an alarm signal according to the detection of the start and outputting the generated alarm signal together with the image data; and transmitting the image data, the recording start signal, the recording end signal, and the alarm signal from the setting unit to a 2W metallic cable. An xDSL modem transmitting unit for transmitting the image data using a transmission medium, wherein the monitoring side transmits the image data transmitted via the 2W metallic cable. An xDSL modem receiving unit that receives the recording start signal, the recording end signal, and the alarm signal; an image decoder unit that decodes the image data from the xDSL modem receiving unit; and the recording from the image decoder unit. A detection unit that detects a start signal and the recording end signal and an alarm signal; a receiving storage device that records the image data decoded during the recording start signal and the recording end signal from the detection unit; A remote image monitoring system comprising a monitor for displaying the alarm signal from a detection unit. 6. The monitored side according to claim 1, wherein the monitored side records the image data during the recording start signal and the recording end signal when the transmission medium of the 2W metallic cable cannot communicate, and recovers the image data. A remote image monitoring system comprising a transmitting-side storage device for reproducing, wherein the xDSL modem transmitting unit transmits the reproduced image data to the monitoring side. 7. The apparatus according to claim 1, wherein a POTS splitter transmitting section and a POTS splitter receiving section are arranged between the xDSL modem transmitting section and the xDSL modem receiving section. P
Using the transmission medium of the 2W metallic cable, transmission between the OTS splitter receivers is performed from the monitored side to the monitor side, and an exchange is connected to the POTS splitter receiver, and the exchange responds to the input of the alarm signal. A remote image monitoring system comprising: setting a telephone number of a telephone to be set in advance so as to notify the previously set telephone of a change in the image data on the monitored side. 8. The remote image monitoring system according to claim 7, wherein said preset telephone is notified that a change has occurred in said image data on the monitored side, and a monitor is notified by e-mail. system. 9. The surveillance camera according to claim 1, 5 or 6, wherein the surveillance camera comprises a plurality of surveillance cameras, and each monitor camera of the plurality of surveillance cameras allocates a dedicated transmission band for each surveillance camera to the image encoder unit. And when the setting unit detects the start of the change in the image data, the monitoring camera monitoring the changed image data in response to the detection gives priority to the transmission band dedicated to each monitoring camera. A remote image monitoring system comprising a multiplexing device that switches to use for a remote monitoring system.