TWI227635B - Image transmission device - Google Patents

Abstract

The present invention is an image transmission device, which is used to transmit the image packets on the existed wiring layout (such as power line) for the video signal obtained from an image capturing device, and to control the image capturing device. The device comprises: an image conversion unit for converting the image signal into the digital image data; an image compression unit for compressing the digital image data with the image compression technique; a packet processing unit for packaging the compressed data into the image data packets; and, a communication modulation/demodulation unit for RF modulation on the image data packets and transmitting through the existing wiring, and further attaching with a control unit for controlling the signal monitoring.

Description

1227635 V. Description of the invention d) [Technical field to which the invention belongs] The image is about a "image transmission device, especially a frequency that can use packets), and the existing wiring is used to deliver the image with" prior art "^ The image transmission device for controlling and controlling the image. In the typical case of image acquisition by the image acquisition device of m ξ far away, the image monitoring system of the camera is used in practical applications. There are usually more than one and distributed in The problem of the distance control host is described as follows: The wiring and application of known technology, cable wiring = n ^^ 2 Figure "shown" is to use a conventional coaxial electrical system to pass through a shaft; The analog image captured by the τ machine 11 is set to 1 4 (such as a monitor) on the computer " and the same number of coaxial electrical devices as the output device are used ㈣ ^ ° 卩 camera ^ 1 ，, the construction cost must be wasted. Not only wasting material costs, but also the loss of transmission time, and the loss of time = the transmission of long distance λ 'analog images are adjusted to 殡 4 丄 4 丄 ... Therefore, when it is η feet (approximately every 10 0 ~ 2 0 0 meters ) 丨 Amplifier 丄 5 must be installed (as shown in "Figure 2"), Come to put: ;;), like the signal, the application method is not f beard, and enlarge it on the long-distance transmission ;; '== to: the transmission of text and data does not have much magnetic interference, analogy adjustment The extreme change easily causes the image to be captured or interpolated in the middle, and the integrity of the image data is destroyed. Chastity A Insert Page 5

N: 1227635

Description of the invention (2) Jin Ru =, as in the "Figure 2", as above, it can greatly wiring mode, wiring mismatches, and transmission products and the most efficient, light beams of a transmission wheel The optical fiber is a transmission medium, but the optical fiber cannot meet the detection of general large instruments. The special general public does not indicate it. It is the improvement technology. The optical fiber is the most among 16 but the installation must make millions of solutions. Xi, Because of this, the aforementioned one can be used to digitally enable video transmission to be installed safely over existing image data. Use the existing fiber; also currently used = also "optical fiber": and Roule's media, and the optical fiber 16 is a good data transmission quality, although the appetite is ^ appetite, and during construction maintenance, To hundreds of thousands or even count. From the above description, the line is available, and its transmission quality is easy to distort, the cost is large, and the maintenance is not easy. The image transmission device can be based on the [invention content], the purpose of the present invention is proposed, the long-distance transmission will use the video power The method of transmitting data by wire The image conversion, compression, modulation, and transmission of the image proposed by the present invention, and the transmission process, intercepts or inserts the image halfway through the transmission process, and the material is transmitted to the receiving end. The best 16 of the kind described in the optical fiber is a one-effect, one-cost, special currency, and the cost of the known coaxial cable 1 2 distribution fiber 16 wiring method conceived a more complete description of the present invention The disadvantages are improved one by one. To avoid distortion of the image transmission and radio frequency modulation (RF), the image is not distorted. It is a way of transmitting image data through wiring to transmit data with encryption protection. It is easy to quickly, and completely, wiring the image data (such as power lines) into the

HHI

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Explanation of the invention (3), no re-wiring is needed, the installation location can be changed at any time, and the network fails. The purpose is to connect multiple cameras at the same time, and provide multiple IPs when the camera is used. Address, which can be used as a long-distance storage material for long distances :: It has similar functions, but cannot be used for other preferred embodiments, application examples, and technical contents of the line drawing. Figure 3-1 "shows the image signal obtained in the first embodiment of the present invention. The image signal is obtained by an image extraction device 2 l · (such as a webcam, = inside: with IP address). The image signal can be demodulated through communication by using the existing wiring (such as the power line like Si green, telephone wiring) through the transmission of ^ 22. It is transmitted to the terminal computer 2 4 and this is the image transmission wheel. Device 2 2 η ^ Single 2 2 1 'Converts ~ image obtained by the image manipulation device 2 1 into a digital image data; an image compression unit 2 2 2 receives the digital image = =; logarithmic The image is compressed to reduce data; ^ The packet processing unit 2 2 3 Command closure process, and the packet depacketizer and the digital image compression, image data packet; and develop into a [pi] $ ^

1 ^ 27635 V. Description of the invention (4) The demodulation unit 2 2 4 is for use. The data of 20 MHz is transmitted at a frequency of 1 M for a frequency of 3 MHz. The retransmission speed can be: ), Demodulate the second transmission image data to another communication modulation P and transfer the transmission wheel transmission to the terminal computer? 4, Xi 1 for 3 conversion, Yu solution provides 16bits of data capacity. ~ Communication modulation and demodulation unit 2 2 4 and then see the "Figure 3-2", it is the U soil of the present invention mainly using the terminal computer 2 4 through the existing wiring (* electric power i) The remote image # | takes the device 2 χ, which is mainly a spear, and uses the line element 2 2 5 according to the command issued by the terminal computer 2 4 to control the use / control ^ single set! 1 into the depth of field or focus control; from the terminal ::: The command is sent to the order to send the sister 4 2 3, the signal is transmitted == modulation and demodulation unit 2 2 4, work, Further, the ==; management unit "3 is decapsulated and moved 2 2 5, and the" " order signal of the sealing unit 3 is transmitted to the control unit fetching device 2 Γ advance: $: 2 f J: according to the command signal The content is for image capture control. For the manufacturing system, such as the viewing angle, depth of field control, or focal length, please refer to "the fourth illustration, which is a good example of the present invention" (2 la ~ 2 lp) / = Xiangshan transmission, set (2 2a ~ 2 2p), and use the first camera with the camera; the end of the month 1 4 to use, as shown in the figure, the first connection, and the other to the mountain la, 1. The first image transmission device 2 2a—end line, such as “i: end: τ axis electrical i line” (or use the existing cloth, or /, his existing line is like optical fiber, telephone wiring)

1227635 V. Description of the invention (5) It is connected to the image receiving device 25 and the terminal computer 24, and the connection of the next camera (2 lb ~ 2 lp) is analogous. Each camera (2 la ~ 2 1) p) Must be equipped with an image transmission device (2 2 a ~ 2 2 p), and connect 16 cameras (2 1 a ~ 2 1 p) at the same time on a single coaxial cable 2 6 A coaxial cable wiring method must be installed (as shown in Figures 1-1), and a single coaxial cable 26 can extend n kilometers (about 6 kilometers). When doing long-distance transmission, its transmission quality It is almost the same as the optical fiber transmission, but the cost is much lower than the optical fiber, and the construction is much easier than the optical fiber; and each image transmission device (2 2 a ~ 2 2 ρ) provides a set of IP addresses to the camera (2 la ~ 2 ιρ) When the terminal computer 24 requests an action, the corresponding IP address can be used to control the image capture device 21 through the control unit 2 2 5 inside the image transmission device 2 2 (such as "Figure 3-2" (Shown), can also control several camera guards (21a ~ 2 lp) at the same time. In summary, it is only equivalent changes and domains of the present invention that are not used to limit the scope of the present invention. The best examples and application examples, and. That is, any patent application according to the present invention should be the technical model of the present invention.

1227635 Schematic description [Schematic description] Figures 1-1 are wiring diagrams of conventional coaxial cables. Figures 1-2 are long-distance wiring diagrams of conventional coaxial cable. Figure 2 is a conventional fiber-optic wiring diagram. Figures 3-1 are the first preferred embodiment of the present invention. Figures 3-2 show another preferred embodiment of the present invention. ) FIG. 4 is another preferred application example of the present invention. Camera 4 2 2 2 2 2 Optical fiber image capture device, image transmission device, image conversion unit, image compression unit, packet processing unit, communication modulation and demodulation unit control unit 1st ~ 16th camera, 16th image transmission device, image receiving device

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Claims (1)

1227635 VI. Scope of patent application1. An image transmission device is used to transmit the image signal obtained by an image capture device to a remote host through existing wiring, which includes: an image conversion unit that converts the image The image signal obtained by the capture device is converted into digital image data; an image compression unit receives the digital image data and applies image compression technology to compress the digitized image; a packet processing unit converts the compressed image data Encapsulated as an image data packet; and a communication modulation and demodulation unit, which transmits the image data packet to a terminal computer through radio frequency modulation (RF) method through the existing wiring after demodulation. 2. The image transmission device according to item 1 of the scope of patent application, wherein the data modulated by the communication modulation and demodulation unit has a frequency of 20 MHz, and the transmission speed can reach 14 Mbps. & 3. The image transmission device as described in item 丨 of the patent application scope, wherein the communication modulation and demodulation unit provides a data capacity of 16 bits. 4. As the image transmission device described in item 丨 of the patent application scope, the direct modulation and demodulation unit provides 16 sets of 1? Addresses. ', ^ 5 · —A kind of image transmission device, which controls the image capturing device through the existing wiring issued by the terminal computer. It contains · ~, conversion = = material compression of the image signal obtained by the image manipulation device-image compression A unit that receives the digital image data and compresses the digitized image with the compressive technology; w ^ a packet processing order it, which encapsulates and decompresses the transmitted data or command page 1227635 Processing, encapsulating the compressed digital image data into a packet of image data; a terminal computer; using the control to control the control; wherein the control is a communication modulation and demodulation unit; Variable (RF) mode, which is demodulated and transmitted to a control unit through the existing wiring. According to the command issued by the terminal computer, it is simply converted into a control signal to monitor various controls. t ί The image transmission device described in item 5 of the scope of patent application: 7 * The unit can control the depth of field of the image capture device. 2. The image transmission device described in item 5 of the patent application scope, '8 · 7 Control of the monitoring angle of the image capture device.-The image transmission device described in item 5 of the patent scope, 70 Image capture Pei Zhi controls the focal length.