Coding method, coding device, decoding method, decoding device, data transmitting device and data receiving device

Abstract

The invention provides a coding method, comprising the steps of detecting a first bit stream to obtain a first detection result; inserting an identification bit in the first bit stream according to the first detection result to form a second bit stream; wherein, the difference of the bit number of the first bit stream and the bit number of the second bit stream is 1. A decoding method comprises the steps of detecting a specific bit collection in the first bit stream to generate the first detection result, wherein, the specific bit collection comprises at least one bit; transforming the first bit stream into the second bit stream according to the first detection result; wherein, the difference of the bit number of the first bit stream and the bit number of the second bit stream is 1. By the coding method of the invention, the sacrificial bandwidth during the data transmission can be reduced, the energy loss is reduced, the coding quality is improved, the coding elasticity is increased and / or the transceiver end circuit dimension is saved.

Description

technical field [0001] The present invention relates to data encoding and decoding, and in particular to a method and device for encoding by inserting an identification bit into an uncoded data and its related decoding method, decoding device, data transmitting device and data receiving device. Background technique [0002] Generally speaking, when the transmitting end (Transmitter, TX) and the receiving end (Receiver, RX) transmit data between each other, in addition to the mechanism for transmitting / receiving data, there is also a need for a transmission / reception clock (Clock) mechanism of information. When transmitting data on a high-speed interface, in order to improve signal transmission quality, reduce electromagnetic interference (EMI), provide error correction mechanism (Error correction), and save clock circuits, generally the data to be transmitted is encoded to meet the requirements. above requirements. Traditionally, 4B5B and 8B10B encoding methods are used. H...

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Problems solved by technology

Once more bandwidth is sacrificed, the transceiver needs to transmit the same amount of data at a faster transmission speed. However, when the transmission speed increases (that is, the operation frequency is increased), the transceiver circuit needs additional The current consumed will also increase, thereby increasing the loss of energy

Furthermore, since the receiving end must obtain the phase (Phase) or frequency of the data through the conversion times of the bits in the data when receiving the data, if the bits with the same logic value in the data appear continuously for too many times, the receiving end It will be difficult to obtain the phase or frequency of the data correctly. For example, if the 4B5B encoding method is used to transmit 8-bit data, there may be 8 consecutive logic 0 or logic 1, thus reducing the encoding quality

[0004] In addition, because the data transmission interface includes a phase-locked loop (Phase-locked loop, PLL) type and a delay-locked loop (Delay-locked loop, DLL) type, and 4B5B and 8B10B only support the data transmission interface of the phase-locked loop type (also That is, the encoding flexibility is low), so when the data transmission interface is a delay-locked loop type, an additional circuit mechanism is required at the transceiver end to provide encoding / decoding, thereby increasing the size of the transceiver end circuit

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