JPH07288500A - Mobile monitor device - Google Patents

Abstract

PURPOSE:To provide a monitor device which applies the images, can freely move the monitored and monitoring points and also can eliminate the need for addition of an image branching device, etc., when the monitoring jobs are performed at plural points. CONSTITUTION:A radio transmission device 11 is provided at the monitored side 1, and a radio reception device 21 is provided at the monitoring side 2. Thus a radio transmission line is formed. Then the image information received from a camera 13 of the side 1 are modulated and coded by a modulating/coding device 12 and sent to the side 2 via the radio transmission line. At the side 2, the received signals are demodulated and modulated by a demodulating/ modulating device 22 and displayed on a monitor 23. Thus the movement is facilitated to the side 1 or 2 or between both sides by means of the radio transmission line. Then the signals can be received at a time by plural reception devices of the side 2 with no addition of any device.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] A mobile monitoring device for monitoring a video of a moving body in a remote monitoring device using video at a fixed point or a moving body, or for monitoring a video from a fixed point by the moving body. It is about.

[0002]

2. Description of the Related Art FIG. 7 is a diagram showing a configuration of a conventional monitoring device. The monitored side 1 has a camera 13, a modulator / encoder 12,
It is composed of a transmitter 11, and the monitoring side 2 is a receiver 2
1, a demodulator / decoder 22 and a monitor 23.

Output signal S from the camera 13 on the monitored side 1
Reference numeral 12 is an analog video signal such as NTSC, PAL, SECAM, etc., and the modulation / encoder 12 uses AM (amplitude modulation), F
The signal is converted into an analog modulated IF signal such as M (frequency modulation) or a digitally encoded signal such as PCM coding, DPCM coding and DCT coding. The IF / encoded signal S11 converted by the modulator / encoder 12 is transmitted by the transmitter 11 to the monitoring side 2 through a wired transmission path such as a coaxial cable, an optical cable, a private line, or a public line.

On the monitor side 2, the signal from the transmitter 11 is received by the receiver 21, the received signal is converted into an IF / coded signal S21 similar to S11, and the demodulation / decoding section 22 is similar to S12. Of analog video signal S22
It is displayed on the monitor 23 such as RT or LCD.

[0005]

However, in the example of the conventional monitoring device described above, the monitored side (transmission side) 1 and the monitoring side (reception side) 2 are fixedly installed at all times, and the monitored point or the monitoring side is fixed. To realize a video-based monitoring system in which the monitoring side 2 or the monitored side 1 is a moving body, such as a fixed point such as a stop being monitored from a moving body such as a bus vehicle that cannot move freely. I couldn't.

Further, in response to a request to monitor at a plurality of points at the same time, it is necessary to additionally install a video branching device or, if a line is used, additionally install a broadcasting device and a plurality of lines. there were.

The present invention has been made in view of the above problems, and it is possible to freely move a monitored point or a monitoring point, and additionally install a video branching device or the like when monitoring at a plurality of points. It is an object of the present invention to provide a monitoring device that does not require.

[0008]

In order to achieve the above object, in the invention of claim 1, a monitored terminal having a transmitting means for transmitting image information captured by a camera, and the transmitted image information. A monitoring device comprising a receiving side for receiving the image information and a playback side terminal for reproducing and displaying the received image information on a monitor, wherein the transmitting means and the receiving means use wireless communication, and at least the above It is assumed that the monitoring side terminal is installed in the mobile body.

Further, in the invention of claim 2, the monitored side terminal having a transmitting means for transmitting the image information taken by the camera, and the receiving image having the receiving means for receiving the transmitted image information. A monitoring device comprising a monitoring side terminal for reproducing and displaying information on a monitor, wherein the transmitting means and the receiving means use radio, and at least the monitored side terminal is installed in a mobile body. And

Further, in the invention of claim 3, the monitored terminal which transmits the image information captured by the camera through the network, and the image information transmitted through the network are received and wirelessly transmitted. A monitoring device comprising: a transmitting means; and a monitoring side terminal having a receiving means for receiving image information wirelessly transmitted from the transmitting means and reproducing and displaying the received image information on a monitor. It is assumed that the side terminal is installed in the mobile body.

Further, in the invention of claim 4, a monitored terminal having a transmitting means for wirelessly transmitting the image information captured by the camera, and the image received by receiving the wirelessly transmitted image information. A monitoring device comprising receiving means for transmitting information via a network, and a monitoring side terminal for reproducing and displaying on a monitor the image information transmitted from the receiving means via the network, wherein the monitored side terminal Is installed in the moving body.

Further, in the invention of claim 5, the monitored terminal having the first transmitting means for wirelessly transmitting the image information captured by the camera, and the image information transmitted from the first transmitting means. First receiving means for receiving and transmitting the received image information via a network, second transmitting means for wirelessly transmitting the image information transmitted via the network, and the second transmitting means. A monitoring side terminal having a second receiving means for receiving image information from the monitoring side terminal for reproducing and displaying the received image information on a monitor, the monitored side terminal and the monitoring side terminal Each is installed in the mobile body.

According to a sixth aspect of the present invention, in the above-mentioned third, fourth and fifth aspects, the network is a digital network, and when the image information is transmitted through the network, an encoding means is used. It is assumed that the transmission is performed by using the encoded digital signal.

Further, in the invention of claim 7, in each of the above inventions, when the image information is wirelessly transmitted, the transmission is performed by using a digital signal encoded through an encoding means.

[0015]

According to the present invention, the image information of the camera from the monitored terminal is transmitted through the wireless transmission path, or the reception of the image information of the camera from the monitored terminal on the monitoring side is wirelessly transmitted. By using the route, it is possible to eliminate the need to connect each terminal to a fixed interface and easily move the monitored terminal, the monitoring terminal, or both the monitored terminal and the monitoring terminal on both sides. At the same time, a plurality of monitoring side terminals can simultaneously receive the image information without additionally installing a video branching device or the like.

When the terminal on the monitoring side moves, it is possible to monitor the image of the fixed point before it reaches the fixed point by approaching the fixed point with the moving body. When the monitored terminal moves, the monitored mobile moves closer to the area where the fixed monitoring terminal can receive the monitored video, and the monitored mobile fixes the fixed terminal. It is possible to monitor the moving image on the fixed monitoring side before reaching the side. When both sides of the monitored terminal and the monitored terminal move, the moving body can monitor the moving image freely.

Further, in the above, after the image information of the camera from the monitored terminal is transmitted through a network such as a public network, the image information of the camera is transmitted to the monitored terminal moving through a wireless transmission path, or the moving object is moved. After receiving the image information of the camera from the terminal on the monitoring side via the wireless transmission path, by transmitting it to the monitoring side through a network such as a public network, or the image information of the camera from the terminal on the moving monitored side. After receiving the data via the wireless transmission line,
By transmitting to a monitoring-side terminal that moves through a network such as a public network and a wireless transmission line, movement monitoring between remote locations can be economically realized.

Furthermore, high-quality movement monitoring is realized by using an encoded digital signal in the above-mentioned wireless transmission or network transmission.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 (a) is a diagram showing the configuration of the first embodiment according to the present invention, and is based on the invention of claim 1. In FIG. The fixed station on the monitored side 1 is composed of a camera 13, a modulator / encoder 12, and a transmitter 11. The mobile station on the monitored side 2 is a receiver 21, a demodulator / complexer 22, and a monitor 2.
It is composed of three.

The output signal S12 from the camera 13 of the fixed station on the monitored side 1 is an analog video signal such as NTSC, PAL, SECAM, etc., and the modulator / encoder 12 uses AM (amplitude modulation), FM (frequency modulation), etc. Analog modulated IF
Signal or PCM coding, DPCM coding, DCT
It is converted into a coded signal which is digitally coded such as coded. The IF / encoded signal S11 converted by the modulator / demodulator 12 becomes a high-frequency signal in the transmitter 11, and is constantly transmitted as a radio signal from an antenna connected to the transmitter 11.

The receiving device 21 of the mobile station on the monitoring side 2 located in the range where the radio signal from the transmitting device 11 can be received converts the received signal from the transmitting device 11 into an IF / coded signal S21 similar to S11. To do. This signal S21 is converted into an analog video signal S22 similar to S12 by the demodulation / decoding unit 22 and displayed on a monitor 23 such as a CRT or LCD.

As a result, as shown in the usage example of FIG. 1B, when the mobile monitoring stations 2-1 and 2-2 circulate among a plurality of fixed monitored stations 1-1 and 1-2, the same movement is performed. Monitoring station 2-
1 or 2-2, it becomes possible to monitor in advance when approaching the areas A1 and A2 where the signals of the fixed monitored stations 1-1 and 1-2 reach. Also, one fixed monitored station 1
-1 or 1-2 with a plurality of mobile monitoring stations 2-1 and 2-2
When approaching each other, a plurality of mobile monitoring stations 1-1 and 1-2 can simultaneously monitor one fixed monitoring station 2-1 or 2-2.

FIG. 2 (a) is a diagram showing the structure of the second embodiment of the present invention, and is based on the invention of claim 2. In FIG. This embodiment has the same configuration as that of the first embodiment shown in FIG. 1A except that the monitored side 1 is a mobile station and the monitoring side 2 is a fixed station. Since it is the same as that of the first embodiment, its explanation is omitted.

As a result, as shown in the usage example of FIG. 2 (b), the mobile monitored station 1 freely moves within the area where the signal reaches so that the video from the mobile monitored station 1 is fixed. 2 allows constant monitoring.

FIG. 3A is a diagram showing the configuration of a third embodiment according to the present invention, which is based on both the first and second aspects of the invention. In this embodiment, in the first embodiment shown in FIG. 1A, the monitored side 1 is a mobile station, so that both sides of the monitored side 2 and the monitored side 1 are mobile stations. The configuration of each unit is the same, and the operation and function thereof are the same as those of the first embodiment, and thus the description thereof will be omitted.

As a result, as shown in the use example of FIG. 3B, the image of the mobile monitored station 1 moving freely can be monitored by the mobile monitoring stations 2-1 and 2-2 moving freely. It will be possible.

FIG. 4A is a diagram showing the structure of a fourth embodiment according to the present invention, which is based on the invention of claim 3. This is because in the first embodiment shown in FIG. 1A, the video signal converted by the modulation / encoder 12 of the fixed station on the monitored side 1 is remotely accessed by using the network 3 such as a dedicated line or public line. Transmitting device 1 that transmits to the ground and is a base station at a remote place
1 is wirelessly transmitted, is received by the receiving device 21 of the mobile station on the monitoring side 2, demodulates / decodes the received signal S21 by the demodulator / decoder 22, and displays it on the monitor 23. Since the function of is similar to that of the first embodiment, its explanation is omitted.

As a result, as shown in the usage example of FIG. 4 (b), the mobile monitoring station 2 freely moves within the area where the signal from the transmitting device 11 reaches, so that the video from the monitored side 1 is displayed. It becomes possible to monitor at the mobile monitoring station 2 at a remote place.

FIG. 5A is a diagram showing the configuration of the fifth embodiment according to the present invention, and is based on the invention of claim 4. In this embodiment, in the second embodiment shown in FIG. 2A, the receiving device 21 of the fixed station on the monitoring side 2 is used as a base station, and the video signal received by the receiving device 21 is used for a private line, a public line, or the like. The network 3 is used for transmission to a remote place, a signal received at the remote place is demodulated / decoded by the demodulator / decoder 22 and displayed on the monitor 23. Other functions are the same as those of the first embodiment. Therefore, the description is omitted.

As a result, as shown in the use example of FIG. 5B, the moving monitored station 1 is free to move within the area where the signal reaches the receiving device 21, and the video from the moving monitored station 1 is thus moved. Can be constantly monitored by the remote monitoring side 2.

FIG. 6A is a diagram showing the structure of a sixth embodiment according to the present invention, and is based on the invention of claim 5. This is because both the monitored side 1 and the monitored side 2 are mobile stations, the base station provided with the receiving device 14 for receiving the signal from the transmitting device 11 of the monitored side 1 and the receiving device 2 of the monitoring side 2.
The base station provided with the transmitting device 24 for transmitting a signal to 1 is a remote point-to-point configuration via the network 3 such as a private line or a public line.

As a result, as shown in the usage example of FIG. 6B, the mobile monitored station 1 is free to move within the area where the signal reaches the receiving device 14, and the mobile monitoring station 2 is transmitting device 24. It is possible to monitor the video from the mobile monitored station 1 on the mobile monitoring side 1 at a remote location by freely moving within the area where the signal from

As described above, according to the embodiment of the present invention, when a moving object such as a bus or a train approaches a point where a plurality of cameras are installed, such as a bus stop or a railway platform,
It is possible to monitor the customer waiting situation and risk prediction in advance.

By setting the bus stop and the platform side as the monitoring side (base station) and the bus and train side as the monitored side (mobile station), the approach status of the bus, the destination of the bus, the passenger status of the bus and the train can be determined. You can monitor at the bus stop in advance.
In addition, the security status can be monitored at the center in real time by setting the guards of the building and the like as the monitored side (mobile station) and the monitoring center as the monitoring side (base station). Further, by using a network such as a leased line or a public network, it is possible to monitor at a remote place.

In addition, inside the building, outdoors, etc., the guards who are guarding can monitor the situation of another guarding place.

By transmitting the analog signal modulated by the transmitter to the receiver via the analog radio transmission path, the system in the closed area can be economically constructed. Also, when remote monitoring is performed using a line, by transmitting the digital signal encoded by the transmitting device to the receiving device via an analog wireless transmission line and a conventional analog line, a remote place with low communication charges can be obtained. It becomes possible to build a monitoring system. Further, by transmitting the digital signal encoded by the transmitter to the receiver through the high-speed digital radio transmission line and ISDN transmission line network, it becomes possible to construct a high-quality remote monitoring system. .

[0038]

As is apparent from the above description, claim 1
According to the second aspect of the invention, the image is transmitted via the wireless transmission path, and it is not necessary to connect the terminal to a fixed interface. Therefore, the monitored terminal, the monitoring terminal, or the monitored terminal. It becomes possible to easily move both sides of the side terminal and the monitoring side terminal, and at the same time, it becomes possible for a plurality of monitoring side terminals to receive simultaneously. When the monitoring side terminal moves, it is possible to monitor the image at the fixed point. When the monitored terminal moves, it is possible for the fixed monitoring side to monitor the image while moving freely. When both sides of the monitored terminal and the monitored terminal move,
It is possible to monitor the image while moving freely with a moving body.

According to the third aspect of the present invention, in particular, the image information of the camera from the monitored terminal is transmitted through a network such as a public network, and then transmitted to the monitoring terminal moving through the wireless transmission path. By doing so, it is possible to economically monitor the monitored terminal moving at a remote location.

According to the fourth aspect of the invention, in particular, after the image information of the camera is received from the moving monitored terminal through the wireless transmission path, the monitoring terminal is transmitted through a network such as a public network. Since it is transmitted to, it is possible to economically monitor the monitored terminal at a remote location from the moving monitoring terminal.

According to the fifth aspect of the present invention, in particular, after receiving the image information of the camera from the moving monitored terminal through the wireless transmission path, the wireless information is further transmitted through the network such as the public network. Since the transmission is made to the monitoring side terminal moving via the transmission line, the monitored side terminal moving at a remote location can be monitored from the moving side monitoring side terminal as well.

Further, according to the invention of claim 6 or claim 7, since the image information is transmitted using the encoded digital signal, high-quality movement monitoring or movement monitoring between remote locations can be performed. It will be possible.

[Brief description of drawings]

FIG. 1A is a block diagram showing a configuration of a first embodiment of the present invention, and FIG. 1B is a diagram showing an application example of the first embodiment.

FIG. 2A is a block diagram showing a configuration of a second embodiment of the present invention, and FIG. 2B is a diagram showing an application example of the second embodiment.

FIG. 3A is a block diagram showing a configuration of a third embodiment of the present invention, and FIG. 3B is a diagram showing an application example of the third embodiment.

FIG. 4 (a) is a block diagram showing a configuration of a fourth embodiment of the present invention, and FIG. 4 (b) is a diagram showing an application example of the fourth embodiment.

FIG. 5A is a block diagram showing a configuration of a fifth embodiment of the present invention, and FIG. 5B is a diagram showing an application example of the fifth embodiment.

FIG. 6A is a block diagram showing a configuration of a sixth embodiment of the present invention, and FIG. 6B is a diagram showing an application example of the sixth embodiment.

FIG. 7 is a block diagram showing the configuration of a conventional monitoring device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Monitored side (mobile monitored station or fixed monitored station) 11 ... Transmitting apparatus 12 ... Modulation / encoder 13 ... Camera 14 ... Receiving apparatus 2 ... Monitoring side (mobile monitoring station or fixed monitoring station) 21 ... Receiving apparatus 22 ... Modulator / decoder 23 ... Monitor 24 ... Transmitter 3 ... Network such as public network

Claims (7)

[Claims] 1. A monitored terminal having a transmitting means for transmitting image information captured by a camera, and a receiving means for receiving the transmitted image information, and reproducing and displaying the received image information on a monitor. A mobile monitoring device comprising a monitoring side terminal, wherein the transmitting means and the receiving means use radio, and at least the monitoring side terminal is installed in a mobile body. . 2. A monitored terminal having a transmitting means for transmitting image information captured by a camera, and a receiving means for receiving the transmitted image information, and reproducing and displaying the received image information on a monitor. A monitoring device comprising a monitoring side terminal, wherein the transmitting means and the receiving means use wireless, and at least the monitored side terminal is installed in a moving body. apparatus. 3. A monitored terminal for transmitting image information captured by a camera via a network, a transmitting means for receiving the image information transmitted via the network and wirelessly transmitting the information, and the transmitting means. A monitoring device comprising a monitoring side terminal for receiving image information wirelessly transmitted from a monitoring side terminal for reproducing and displaying the received image information on a monitor, wherein the monitoring side terminal is installed in a mobile body. A mobile monitoring device characterized by being provided. 4. A monitored terminal having a transmitting means for wirelessly transmitting image information captured by a camera, and receiving the wirelessly transmitted image information and transmitting the received image information via a network. And a monitoring side terminal for reproducing and displaying on a monitor the image information transmitted from the receiving means via the network, wherein the monitored side terminal is installed in a mobile body. A mobile monitoring device characterized in that 5. A monitored terminal having first transmitting means for wirelessly transmitting image information captured by a camera, and image information received by receiving image information transmitted from the first transmitting means. First receiving means for transmitting information via a network, second transmitting means for wirelessly transmitting image information transmitted via the network, and receiving image information from the second transmitting means A monitoring device comprising a monitoring side terminal having second receiving means for reproducing and displaying the received image information on a monitor, wherein the monitored side terminal and the monitoring side terminal are respectively installed in a mobile body. A mobile monitoring device characterized in that 6. The network according to claim 3, wherein the network is a digital network, and when the image information is transmitted through the network, the digital signal encoded by the encoding means is used to perform the transmission. Four
Alternatively, the movement monitoring device according to claim 5. 7. The method according to claim 1, wherein the image information is transmitted wirelessly by using a digital signal encoded by an encoding means. Mobile monitoring device.