32 results about "8b/10b encoding" patented technology

A bus interface for transfer of SONET / SDH data that supports a plurality of SONET / SDH flows. The invention supports two line coding schemes: 8B / 10B encoding of STS-12, and SONET scrambled coding for STS-12, STS-48, and STS-51. The invention additionally supports two modes of line testing: entire links can be tested by inserting and checking PRBS sequences, and the SPE payload of the largest concatenated STS-Nc which the link can carry (STS-12c, STS-48c, STS-51c) can be individually tested by inserting and checking PRBS sequences.

Existing message fields and / or message parameters are configured to facilitate the packet and message synchronization and decoding tasks that conventionally rely upon a known bit sequence in each packet, thereby eliminating the need for a predefined message preamble in each packet. In example embodiments, the unique identifier of each transmitter is structured to facilitate determination of bit polarity and the start of each packet; packet sequence numbers use an unconventional counting sequence to assure synchronizing bit transitions; and so on. Other techniques, such as the use of run-length limited (RLL) message encoding, or 8b / 10b encoding, to assure within-packet bit transitions, are also used to enhance clock synchronization and proper header location determination.

The invention relates to a TV signal transmission device compatible with cable TV transmission and interactive personality TV (IPTV) transmission. The TV signal transmission device comprises a digital audio signal acquisition module, a digital video signal acquisition module, an additional data acquisition module, a packaging-multiplexing module, a 8B / 10B encoding module, a synchronization word insertion module, a parallel-serial conversion module, an asynchronous serial interface (ASI) processing module, an IP (Internet Protocol) packaging module, a UDP (User Datagram Protocol) packaging module and a switching control module, wherein the packaging-multiplexing module is connected with the digital audio signal acquisition module, the digital video signal acquisition module and the additional data acquisition module in order to receive compressed audio data, compressed video data and encoded additional data, package the received data and multiplex the packaged data, and is used for processing the packaged and multiplexed data under the control of the switching control module in order to obtain a cable TV signal or an IPTV signal. Through adoption of the TV signal transmission device, functions of the transmission device can be extended, and compatibility with transmission of the cable TV signal and the IPTV signal is realized.

Disclosed herein is a signal transmitting device including a multiplexing section configured to generate a B / R ch by alternately multiplexing image signals read from B pixels and R pixels among image signals read and input in units of a predetermined number of samples in each of the first line and the second line from said image pickup element in an active region corresponding to a C ch in HD-SDI together with start code of one of SAV and EAV, and generate a G ch by multiplexing, in order, image signals read from G pixels in an active region corresponding to a Y ch in HD-SDI together with said start code; and an 8B / 10B encoder configured to output serial digital data converted by 8B / 10B-encoding the active regions on the B / R ch and the G ch having data structures corresponding to said HD-SDI and an auxiliary data region including SAV, EAV, LN, and CRCC.

The invention discloses a device and method for mutual conversion of 8B / 10B encoding and 64B / 66B encoding, including an 8-to-64 module and a 64-to-8 module. For the 8-to-64 module: after decoding the data received by 8 channels, it is obtained 8 sets of 8bit data are encapsulated into a set of 64bit data, and then the 64bit data is encoded in 64B / 66B for high-speed transmission to realize 8B / 10B encoding to 64B / 66B encoding; for 64 to 8 modules: decode the data received from the sender Restore to 8 sets of 8bit data corresponding to the channel, and then perform 8B / 10B encoding before transmission, realizing 64B / 66B encoding to 8B / 10B encoding. The invention greatly reduces the consumption of optical fiber and the laying cost of optical fiber, and can increase the data transmission rate of PON port from 1.25Gbps to 10Gbps through 64B / 66B encoding, greatly increasing the speed of long-distance transmission.

Embodiments of the present invention provide a serial transmission method and system based on 8B / 10B encoding and decoding, which relate to the technical field of communications. The methods include: the serial data sending end converts the 16-bit parallel data in a specific format into 20-bit parallel data after two times of 8B / 10B encoding; Transmit to the serial data receiving end; the serial data receiving end receives the high-speed serial data stream, and converts the high-speed serial data stream into 20bit parallel data; the serial data receiving end performs 8B / 10B decoding on the 20bit parallel data twice Get 16bit parallel data in a specific format. The embodiment of the present invention can realize the serial transmission of 2711 format data, which makes up for the defect that the existing FPGA built-in hard core cannot meet the serial transmission of 2711 format data, and needs to develop a dedicated chip for 2711 format data, and reduces the cost of serial transmission. communication costs, and there is no need to set multiple general-purpose pins on the FPGA for connecting dedicated chips, which simplifies the structure of the FPGA.

A system and method of transmitting client data encoded according to an 8B / 10B encoding between a client side and an optical communication network side, including inserting padding signals in an amount corresponding to a rate difference between a clock on the client side and a clock in the optical transmission device and controlling a clock to be used as a reference in transmitting the client data to synchronize with a clock having been used as a reference in transmitting the client data on the basis of a ratio of padding signals having been inserted in the client data.

The invention discloses a serial communication protocol controller, which includes a byte splitting circuit and an 8b10b encoder. The byte splitting circuit receives bus data, transmits it to the 8b10b encoder, and completes bus data and 8b / 10b encoding The matching of data with different clock frequencies and different bit widths between devices. The byte splitting circuit includes FIFO, controller and register, and the byte splitting circuit extracts 32-bit bus data byte 0, byte 1, byte 2, byte 3 to form source data word 1; byte 4, byte 5. Byte 6 and byte 7 form the source data word 2, obtain 4 beats of 8-bit output data, then write them into FIFO in turn, and then read them into the register under the action of the controller, and at the same time follow the byte from low to high The sequence is transmitted sequentially to the encoder input. The invention also provides a byte splitting circuit and an 8b10b encoder adopted by the serial communication protocol controller. The invention effectively solves the matching problem of the data bandwidth of the sending end of the high-speed serial communication protocol.