JP2002305743A - Remote moving picture transmission system compatible with adsl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ADSL(Asynchronous Digital Subscriber Line) compatible remote moving picture transmission system that can remotely control a robot camera through a LAN(Local Area Network) and an ADSL by transmitting a moving picture through IP connection by using the ADSL capable of higher-speed transmission in comparison with an ISDN line and compatible with the LAN. SOLUTION: This invention provides the ADSL compatible remote moving picture transmission system where the robot camera 3 at a remote place adopting an infrared ray relay system by a PB (Pushbutton) tone is controlled by H. 323 digital CODECs 7 that run on the ITU standardized protocol H. 323 and mutually transmit a moving picture under the TCP/IP environment by using ADSL MODEMs B adopting the ADSL technology capable of high-speed communication simultaneously using far higher frequencies than those of a conventional telephone line. Through the configuration above, the ADSL compatible remote moving picture transmission system allows a headquarters at a remote place to control the robot camera 3 installed in e.g. a shop to conduct leftward/rightward/upward/downward/panning/zooming operations and to manage the camera by means of a screen image thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring system.

[0002]

2. Description of the Related Art Conventionally, remote monitoring has been carried out by using IT over an ISDN line.
U-TH. It was operated on 320 standards. ISD
N has a transmission rate of only 128 Kbps. There are drawbacks such as not being able to make an IP connection because it is not compatible with LAN.

[0003]

A moving image is transmitted by IP connection corresponding to a LAN (local network).
Enables remote control of robot cameras over LAN and ADSL lines.

[0004]

SUMMARY OF THE INVENTION International Standard for IP Connection I
TU-TH. H.323 based images on LAN and ADSL
Transmission speed is 10M in LAN when using equal IP connection
bps, 100 Mbps or 1000 Mbps,
ADSL can transmit digital signals at a speed of 600 to 1,000 Kbps. Therefore, moving image transmission is performed on the premise of IP connection. 711 The PB sound is transmitted as an audio signal according to another standard, and the PB sound is converted to an infrared camera control signal to the other party. An infrared box is placed close to the robot camera, and the robot camera can be panned, zoomed, left and right, and up and down remotely.

[0005]

By setting and using as described above, the H.264 of the present invention can be used. The 323 LAN digital codec remote video transmission system can monitor a robot camera installed in, for example, a store from a remote headquarter in an IP connection environment by performing left / right / up / down, pan / zoom. Specifically, if a LAN is laid in the same building, the office is on the first floor, and it is easy to monitor the open corridors on the second, third, and fourth floors by remote control with a robot camera. Even if it is not in the same building but in a remote place, if an ADSL line is laid, it can be connected by installing an ADSL modem on both sides, and it is easy to monitor while operating remotely as well.

[0006]

First Embodiment As a first embodiment, an example in which remote monitoring is performed in the same building will be described. Referring to FIG. 1, a robot camera 3 is installed on a ceiling surface 2 of each open corridor 1 and an infrared box 4 is arranged so as to face an infrared receiving section 5 of the robot camera 3 in order to control the movement of the camera. A connection is made from the infrared box 4 to the dialing mover 6 with an OP line, and H.323 digital codec 7 is connected to the audio output. The video from the robot camera 3 uses a coaxial line such as 5C2V and the like. H.323 digital codec 7 is connected to the video input. H. The H.323 digital codec 7 is installed in the management room 9 via the LAN cable 8 with a 10BASE-T connector. 323 digital codec 7. H. in the control room The 323 digital codec 7 is connected to a DTMF transmitter 9 for operation, a color monitor 10 and a personal computer 11. PC 11
Instructs IP connection by AT command. H. After the H.323 digital codecs 7 are connected, the robot camera can be operated by the DTMF transmitter 9. The process can be confirmed on a beautiful screen by the color monitor 10.
As a second embodiment, a case of performing remote monitoring between remote locations will be described. Referring to FIG. 2, the robot camera 3 is installed on the ceiling surface 12 of the building A, and the infrared box 4 is arranged so as to face the infrared receiving section 5 of the robot camera 3 to control the movement of the camera. A connection is made from the infrared box 4 to the dialing mover 6 with an OP line, and 3
23 is connected to the audio output of the digital codec 7. The video from the robot camera 3 uses a coaxial line such as 5C2V and the like. H.323 digital codec 7 is connected to the video input. H. The H.323 digital codec 7 is connected to the building B 15 via the ADSL modem 13 and the metallic wire 14 is connected to the building B 15 via the other ADSL modem 13. 323 digital codec 7. H. B on the side of Building B 14 The 323 digital codec 7 is connected to a DTMF transmitter 9 for operation, a color monitor 10 and a personal computer 12. The personal computer 12 instructs IP connection by an AT command. H. 3
DTMF after 23 digital codecs 7 are connected
The transmitter 9 allows the operation of the robot camera. The process can be confirmed on a beautiful screen by the color monitor 10.

[0007]

As described above, the ADSL according to the present invention is
The corresponding remote moving picture transmission system can immediately increase the moving picture transmission speed from 2.3 times to 5 times or more as compared with the ISDN line. Depending on the speed improvement of the image processing LSI "VCPex", 10M and 100M moving image transmission is also possible.

[0008]

[Brief description of the drawings]

FIG. 1 is a connection diagram of a remote video transmission system compatible with LAN.

FIG. 2 is a connection diagram of an ADSL-compatible remote video transmission system.

[Explanation of symbols]

 1 open corridor 2 ceiling surface 3 robot camera 4 infrared box 5 infrared receiver 6 dialing mover 7 H. 323 digital codec 8 LAN cable 9 DTMF transmitter 10 Color monitor 11 A building 12 Personal computer 13 ADSL modem 14 Metallic wire (copper wire) 15 B building

Claims (3)

[Claims] 1. An ADSL (International Telecom) system using an ADSL modem in an ADSL (Asymmetric Digital Subscriber Line) that enables high-speed communication by using a much higher frequency simultaneously with an ordinary telephone line.
H. protocol created for video teleconference standardized by H.unis. 32
H.3 that operates on H.3 and mutually transmits moving images in a TCP / IP environment. In the H.323 digital codec, an ADSL-compatible remote video transmission system that enables a robot camera in a remote place to be operated by PB sound (push tone) by an infrared relay method. 2. An ADSL-compatible remote video transmission system according to claim 1, wherein a simple copper wire is used in place of the ordinary telephone line, and the robot camera is remotely controlled. 3. The method according to claim 1, wherein the ADSL modem is removed from the configuration and the LAN (Local Area Net) is removed.
work) on 10BASE-T, 100BASE-T
Remote video transmission system that supports remote control of robot cameras.