IPQAM master equipment, IPQAM slave equipment and digital sending and receiving system of integrated service in HFC
A technology of main equipment and IP data packets, applied in the field of IP integrated services, can solve the problems of large size, inappropriateness, high cost, etc., and achieve the effect of broad application prospects and cost saving
Active Publication Date: 2015-01-14
景略半导体(上海)有限公司
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Problems solved by technology
[0005] In view of the above-mentioned shortcoming of the prior art, the purpose of the present invention is to provide a kind of IPQAM master, slave equipment and the digitized sending and receiving system of integrated service in HFC, be used to solve IPQAM modulating equipment bulky, cost in the prior art High, not suitable for the problems at the optical nodes of the IP integrated service network for digital transmission
Method used
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Embodiment
[0041] This embodiment provides an IPQAM master device, such as figure 1 As shown, the IPQAM master device 100 includes: a buffering unit 110 , an IP packet processing unit 120 , an encoding unit 130 , an interleaving unit 140 , and a mapping unit 150 .
[0042] The buffer unit 110 receives and buffers the IP data packets.
[0043] The IP packet processing unit 120 is connected to the buffer unit 110, and splits the IP data packets output by the buffer unit, extracts control information and video data, and processes the control information.
[0044] The encoding unit 130 is connected to the IP packet processing unit 120, encodes the video data, and outputs the encoded data stream. Further, the encoding unit 130 includes but is not limited to an RS encoding module. That is, there may be many kinds of coding modes of the coding unit 130, such as RS coding modes, etc. The coding modes of the coding unit according to the present invention include but are not listed in this embod...
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The invention provides IPQAM master equipment, IPQAM slave equipment and a digital sending and receiving system of an integrated service in an HFC. According to the IPQAM master equipment, a cache unit receives and caches IP data packages; an IP package processing unit is connected with the cache unit, and the IP data packages output by the cache unit are split, control information and video dataare extracted, and the control information is processed; a coding unit is connected with the IP package processing unit, the video data are coded, and coded data code streams are output; a mapping unit is connected with the coding unit, and the coded data code streams are mapped to QAM data streams. The IPQAM master equipment can be applied to a machine room, a one-to-many communication mode can be formed by the IPQAM master equipment and the IPQAM slave equipment of an optical node, separation of the control information and the front data processing and radio frequency conversion end is achieved through the IPQAM master equipment and the IPQAM slave equipment, the cost of the machine room and the optical node is saved, and the IPQAM master equipment and the IPQAM slave equipment can be updated and replaced conveniently in the actual use process.
Description
technical field [0001] The invention belongs to the technical field of IP integrated services, and relates to an IPQAM modulation device, in particular to a digital sending and receiving system of IPQAM master and slave equipment and integrated services in HFC. Background technique [0002] IPQAM modulation equipment integrates "multiplexing, scrambling, modulation, frequency conversion" and other functions, and re-multiplexes the program stream input by DVB signal from IP backbone network in the designated multi-service transmission, and then performs digital modulation and frequency conversion. Output RF signal. The initial IPQAM modulation equipment is composed of a large number of independent equipment such as IP gateway, TS stream multiplexer, TS stream scrambler, QAM modulator, etc., and jointly complete the conversion of IP to QAM signal. The IP gateway converts the TS stream transmitted through IP into the signal stream of the ASI interface. The single signal proces...
Claims
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IPC IPC(8): H04L27/34
CPCH04N7/22H04N21/436H04N21/6106
Inventor 何润生许进虎
Owner 景略半导体(上海)有限公司