JPH06303589A - Monitoring video transmitter and monitoring video receiver - Google Patents

Abstract

PURPOSE:To perform transmission by setting the encoding parameter of video images at an appropriate value based on detection information and changing the assignment band of pertinent video information and to select and display the pertinent video information based on the detection information by decoding the pertinent video information based on the encoding parameter on a reception side relating to a monitoring camera apparatus. CONSTITUTION:Monitoring video information from a monitoring camera 10 is converted to digital signals in an A/D conversion part 11 and encoded in an encoding part 12. The various kinds of states are detected in a sensor 15 and the various kinds of states are informed to a quantization step control part 14 in a detection part 16. In the quantization step control part 14, the number of quantization steps or the like are controlled so as to be appropriate values corresponding to the informed detection information and the video information is encoded in the encoding part 12 based on them. The various kinds of encoded information are made into packets in a packet assembly part 13 and transmitted through a multiplex transmission part 17 to a transmission line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance video transmission device and a surveillance video reception device in a surveillance system for highways, railways, intelligent buildings and the like.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram of a conventional surveillance video transmission device. In FIG. 4, 40 is a surveillance camera and 41 is A.
/ D conversion unit, 42 is an encoding unit, 43 is a packet assembly unit,
Reference numeral 44 is a multiplex transmission unit, 45 is a sensor, and 46 is a detection unit.

The operation of the conventional surveillance video transmitting apparatus having the above-described structure will be described. First, the surveillance camera 4
The monitoring video information acquired from 0 is converted into the A / D conversion unit 41.
Is converted into a digital signal and encoded by the encoding unit 42 according to a predetermined encoding parameter. Further, the sensor 45 detects various states such as an abnormal state, and the detection unit 46 notifies the various states. The encoded video information and detection information are packetized by the packet assembling unit 43 and sent to the transmission path via the multiplex transmitting unit 44.

Next, a conventional surveillance video receiver will be described. FIG. 5 is a block diagram of a conventional surveillance video receiver. In FIG. 5, 50 is a receiving unit, 51 is a packet disassembling / separating unit, 52 is a decoding unit, 53 is a video selecting unit, 54 is a display unit, and 55 is a warning means.

The operation of the conventional surveillance video receiving apparatus configured as described above will be described. First, the signal transmitted through the transmission path is received by the receiving section 50, and the packet decomposing / separating section 51 receives each video. Retrieve information and detection information.
The extracted video information is decoded by the decoding unit 52 based on a predetermined coding parameter. In addition, the warning means 55 warns the content of the detection based on the extracted detection information. The video information corresponding to the video for which the warning has been notified is selected by the video selection unit 53 and displayed on the display unit 54.

[0006]

However, in the conventional surveillance video transmission apparatus and surveillance video reception apparatus, even if various states such as an abnormal state are detected, the corresponding surveillance video can be seen more clearly or larger. There was a problem that I could not do it. Moreover, since the receiving side selects the corresponding video information after the warning is given, there is a problem that the corresponding video information cannot be immediately selected and displayed.

The present invention solves the above-mentioned problems and automatically allocates an allocated band when transmitting the corresponding video information by transmitting the corresponding video more clearly or increasing the screen size on the transmitting side. SUMMARY OF THE INVENTION It is an object of the present invention to provide a surveillance video transmission device that is changed dynamically and a surveillance video reception device that instantly selects and displays a corresponding video on the receiving side.

[0008]

In order to achieve the above object, the present invention first of all, on the transmitting side, based on the detection information detected by a heat sensor, a smoke sensor, etc., a quantization step for encoding the corresponding video information. The coding parameters such as size, frame frequency, and screen size are set to appropriate values, and the coding parameter information and the detection information are packetized together with the video information and sent to the transmission line. Further, the corresponding video information is decoded on the basis of the encoding parameter received on the receiving side, and the corresponding video information is selected and displayed on the basis of the received detection information.

[0009]

According to the present invention, with the above-described configuration, the transmitting side automatically changes the coding parameter of the video information corresponding to the detection information detected by various sensors such as an abnormal state to send the image more clearly, The screen size can be made larger.

On the other hand, the receiving side can instantly select and display the corresponding image from the received detection information.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a surveillance video transmission device showing an embodiment of the present invention.

In FIG. 1, 10 is a surveillance camera, 11 is an A / D converter, 12 is an encoder, 13 is a packet assembler, 14 is a quantization step controller, and 15 is for detecting heat or smoke. Sensor, 16 is a detection unit, and 17 is a multiplex transmission unit.

The operation of the present embodiment having the above-described structure will be described. First, the monitor video information taken in from the monitor camera 10 is converted into a digital signal by the A / D converter 11, and a predetermined encoding is performed. Encoding is performed by the encoding unit 12 according to the parameters. Further, the sensor 15 detects various states such as an abnormal state, and the detection unit 16 notifies the quantization step control unit 14 of the various states. The quantization step control unit 14 controls the number of quantization steps and the step width to appropriate values corresponding to the notified detection information, and the encoding unit 12 encodes the video information based on these encoding parameters. To do.
The encoded video information, detection information, and quantization step information are packetized by the packet assembling unit 13 and sent to the transmission path via the multiplex transmitting unit 17.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a surveillance video transmission device showing a second embodiment of the present invention.

In FIG. 2, 20 is a surveillance camera, 21 is an A / D converter, 22 is a motion detector, 23 is an encoder, 2
4 is a packet assembling unit, 25 is a quantization step control unit, 2
6 is a multiplex transmission unit.

The operation of the present embodiment configured as described above will be described. First, the monitor video information taken from the monitor camera 20 is converted into a digital signal by the A / D converter 21, and the motion detector 22. Detects whether there is a moving part in the video information. If a moving part is not detected, it is coded by the coding unit 23 according to a predetermined coding parameter, and if a moving part is detected, the quantization step control unit 25 is notified of the detection information.

The quantization step control unit 25 controls the number of quantization steps or the step width to an appropriate value corresponding to the notified detection information, and the video information encoding unit 23 based on these encoding parameters. Encode with. The encoded video information, the motion detection information, and the quantization step information are packetized by the packet assembling unit 24 and sent to the transmission path through the multiplex transmitting unit 26.

Further, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 shows a surveillance video receiver according to a third embodiment of the present invention.

In FIG. 3, 30 is a receiving unit, 31 is a packet disassembling / separating unit, 32 is a decoding unit, 33 is an inverse quantization step control unit, 34 is a video selecting unit, 35 is a display unit, and 36 is a warning means. is there.

The operation of the present embodiment configured as described above will be described. First, the transmitted packet information is received by the receiving unit 30, and the packet disassembling / separating unit 31 receives each video information, coding parameter information, Get detection information. The dequantization step control unit 33 controls the number of dequantization steps or the step width corresponding to the received coding parameter, and the decoding unit 32 decodes the corresponding video information based on these coding parameters. . The received detection information is input to the video selection unit 34, the corresponding video information is selected and displayed on the display unit 35, and the warning unit 3 is also provided.
Enter in 6 to alert the recipient in an appropriate manner.

The present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and these modifications are not excluded from the scope of the present invention.

[0022]

As described above, according to the present invention, on the transmitting side, various states such as an abnormal state are detected by various sensors such as heat and smoke, or by the motion detecting function, and the corresponding image is detected according to the detected information. It is possible to automatically change coding parameters such as quantization step size, frame frequency, and screen size related to information coding so that the corresponding video information can be sent more clearly and the screen size can be increased.
The receiving side can instantly select and display the corresponding video based on the received detection information.

Further, rather than monitoring the monitor for a long time, when an abnormality occurs, the image quality of the corresponding monitoring camera is improved to automatically send a clearer image or a camera image with a larger screen size. To display on the monitor
Labor saving and labor saving of the surveillance work can be achieved, and highly reliable video surveillance can be performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a surveillance video transmission device showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a surveillance video transmission device showing a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a surveillance video receiving device showing a third embodiment of the present invention.

FIG. 4 is a block diagram of a conventional surveillance video transmission device.

FIG. 5 is a configuration diagram of a conventional surveillance video receiving device.

[Explanation of symbols]

 10, 20 Monitoring camera 11, 21 A / D conversion unit 12, 23 Encoding unit 14, 25 Quantization step control unit 13, 24 Packet assembly unit 17, 26 Multiplexing unit 15 Sensor 16 Detecting unit 22 Motion detecting unit 30 Reception Part 31 Packet disassembly / separation part 32 Decoding part 33 Inverse quantization step control part 34 Video selection part 35 Display part 36 Warning means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahisa Sakai 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. Encoding means for encoding digitized camera image information according to a predetermined encoding parameter,
Parameter control means for controlling the value of the encoding parameter, transmission means for transmitting the encoded video information, and detection means for detecting and notifying various states, the parameter control means is notified by the detection means. The transmitting means includes a control means for setting the encoding parameter to an appropriate value based on the detected information, and the transmitting means multiplexes and transmits the encoding parameter and the detection information together with the encoded video information. A surveillance video transmission device comprising means. 2. Receiving means for receiving transmitted information, video information from the received signal, coding parameters,
Separation means for separating detection information, decoding means for decoding video information according to the encoding parameter, warning means for notifying the content of the detection information, and video information transmitted from a plurality of cameras A monitoring image receiving device, comprising: a selecting unit that selects desired image information from the inside, wherein the selecting unit includes a control unit that selects the image information based on the detection information.