High-definition optical transceiver and multimedia video digital signal processing method
A digital signal and multimedia technology, applied in the direction of image communication, gigahertz frequency band transmission, electrical components, etc., can solve the problems of limiting the application range of products, the transmission bandwidth range cannot be adjusted dynamically in real time, and the compatible transmission of resolution images cannot be realized. Achieve the effect of compatible sending
Inactive Publication Date: 2014-07-16
北京蛙视通信技术股份有限公司 +1
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The transmission bandwidth occupied by images with a resolution of 1024×76860Hz is about 65Mbps×20=1.3Gbps, which belongs to the MED range, and the transmission bandwidth occupied by images with a full HD resolution of 1920×108060Hz is about 148.5Mbps×20=2.97Gbps, which belongs to HIGH range, while the serdes module can only select one transmission bandwidth range to work, and the transmission bandwidth range cannot be adjusted dynamically in real time. If the HIGH range is used to transmit images with a full HD resolution of 1920×108060Hz, the HIGH range cannot be used to transmit images with a resolution of For images of 1024×76860Hz, within the same data transmission bandwidth range set by the serdes module, compatible transmission of images with two resolutions of 1920×108060Hz and 1024×76860Hz cannot be achieved, thus limiting the application range of the product
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[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0063] The high-definition optical transceiver provided by the present invention includes a transmitter that converts multimedia video digital signals into serial media data and sends them to the peer receiver, and receives serial media data from the peer transmitter and converts them into multimedia video digital signals. The receiver adopts the FPGA solution / SERDES solution.
[0064] Such as figure 1 As shown, the transmitter includes a decoding unit 11, a first clock processing unit 12, a frame code generating and information adding unit 13 and a parallel-to-serial conversion unit 14; wherein the decoding unit 11 is used to perform multimedia video digital signals to be sent Decoding to obtain video line sync signal hs, video field sync signal vs, d...
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The invention discloses a high-definition optical transceiver and a multimedia video digital signal processing method. A pixel clock of a multimedia video digital signal is adjusted to a frequency-doubling clock within a clock range corresponding to efficient bandwidth of a parallel and series conversion unit of a transmitter through a first clock processing unit in the transmitter, compatible transmission of the multimedia video digital signal is realized, and meanwhile, the first clock processing unit generates a pixel clock counting value so that an opposite-end receiver can perform frequency division on the frequency-doubling clock and the pixel clock of the multimedia video digital signal is returned; and a second clock processing unit in the receiver acquires the pixel clock counting value, the frequency-doubling clock adopted when an opposite-end transmitter transmits serial medial data is known from the pixel clock counting value, corresponding frequency division is performed, and the multimedia video digital signal is correctly returned. The compatible transmission of the multimedia video digital signals of images with different resolution ratios is realized by the high-definition optical transceiver.
Description
technical field [0001] The invention relates to an optical transmission device, in particular to a high-definition optical transceiver for remote multimedia video digital signal transmission through an optical fiber and a multimedia video digital signal processing method for the high-definition optical transceiver. Background technique [0002] At present, high-definition video has been more and more applied to the field of security monitoring. Compared with standard-definition video, high-definition video has obvious advantages in picture quality and color reproduction. The high-definition optical transceiver adopts non-compression technology to realize the transmission of digital high-definition video, audio, data and other services. The high-definition optical transceiver can output various resolutions of HDMI (High Definition Multimedia Interface, high-definition multimedia interface) / DVI (Digital Visual Interface, digital video interface) from various high-definition ...
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IPC IPC(8): H04N7/20H04N21/238H04N21/4385
Inventor 王景峰
Owner 北京蛙视通信技术股份有限公司