WO2014101087A1

WO2014101087A1 - Encoding/decoding method, device and system

Info

Publication number: WO2014101087A1
Application number: PCT/CN2012/087804
Authority: WO
Inventors: 张帅; 黄春行; 董晓青
Original assignee: 华为技术有限公司
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2014-07-03
Also published as: CN103229444A; CN103229444B

Abstract

Disclosed are an encoding/decoding method, device and system. The encoding method comprises: adding encoding information and a predefined 2-bit flipping bit regarding whether to perform flipping on sent valid data and the encoding information or not before the sent valid data to enable a decoding device to determine whether to generate a flipping bit sending error and whether to perform flipping on received valid data according to the value of a received flipping bit and the value of the predefined flipping bit, wherein the encoding information comprises a 1-bit synchronization header; and constituting the sent valid data, the encoding information and the flipping bit into a sent data frame. By means of a 2-bit flipping bit, the present invention enables an encoding/decoding system to effectively reduce the bit error rate of the system.

Description

TECHNICAL FIELD The present invention relates to communication technologies, and in particular, to an encoding/decoding method, apparatus, and system. BACKGROUND OF THE INVENTION With the development of communication technologies, the rate of data transmission and the amount of data are constantly increasing. To improve the reliability of high-rate data transmission, the transmitted data is generally encoded, and the data is encoded. , coding efficiency, DC balance characteristics and bit error rate are all important factors to consider.

In the encoding of the existing high-speed serial transmission system, 64B./67B is a high-speed serial coding method with higher coding efficiency, and the coding data of the coding method includes a 64-bit effective number 椐, 2-bit sync header and bit flip bit In the encoding method, setting the bit flip bit enables the decoding device at the receiving end to determine whether to flip the received valid data according to the flipped bit it receives, to obtain the transmitting end. The data actually transmitted before the encoding device encodes

However, in the process of transmitting the encoded data on the link, if the flipping bit changes, the data decoded by the decoding device is not the data actually to be transmitted before the encoding device encodes, and thus a decoding error occurs, resulting in a large codec system. The BER of the present invention provides an encoding/decoding method, apparatus and system for reducing the bit error rate of the codec system.

In a first aspect, an encoding method is provided, including: adding, before a valid data to be transmitted, a coded information and a predefined 2-bit toggle bit for flipping the transmitted valid data and the encoded information, so that the decoding device is received according to the received The value of the toggle bit and the value of the predefined toggle bit determine whether a toggle bit transmission error occurs and whether the received valid data is inverted. The coded information includes a 1-bit sync header;

The transmitted valid data encoding information and the inverted bits constitute the transmitted data frame.

In combination with the encoding method of the first aspect, in the first implementation manner, the encoding information further includes an error check and a correction code for correcting the transmitted valid data and the encoded information. In combination with the coding method or the first implementation manner of the first aspect, in the second implementation manner, before the valid data encoding information and the inverted bit are configured to form the transmitted data frame, the method further includes: sending valid data and encoding information Perform polarity statistics to obtain a statistical report of the polarity of the first polarity sent to the decoding device;

Determining a value of the transmitted toggle bit according to the first polarity statistics, so that the decoding device detects that the value of the received toggle bit is a value of the non-predefined toggle bit, and performs polarity on the received valid data and the coded information. Statistics, obtain the second polarity statistics and determine whether to receive the valid number 接收 by the first polarity statistics and the second polarity statistics.

In combination with the coding method, the first implementation manner, or the second implementation manner of the first aspect, in the third implementation manner, the value of the predefined toggle bit is “ΟΓ”, indicating that the valid data and the encoded information are not generated. Flip, "10" means that the valid data and encoding information sent is reversed or the value of the predefined toggle bit is ":10", indicating that the valid data and encoding information sent have not been inverted, "or indicates the valid data and encoding information sent. Flip

In a second aspect, a decoding method is provided, including:

Obtaining valid data, encoding information, and 2-bit flipping bits in the received data frame, where the encoding information includes a 1-bit synchronization header;

Whether or not a flip bit transmission error occurs and whether the valid data is inverted is determined based on the value of the toggle bit and a predefined value of whether the transmitted valid data and the encoded information are inverted.

In conjunction with the decoding method of the second aspect, in the first implementation, the encoding information further includes error checking and correction for error correction of the transmitted valid data and the encoded information.

In combination with the decoding method of the second aspect or the first implementation manner, in the second implementation manner, according to the value of the toggle bit and a predefined one-bit flip bit of the transmitted valid data and the encoded information The value determines whether a flip bit transmission error occurs and whether the valid data is flipped.

Obtaining a first polarity statistical result of the polarity statistics of the transmitted effective number 编码 and the encoded information by the encoding device;

Correspondingly, determining whether a flip bit transmission error occurs and whether the valid data is inverted is performed according to the value of the flipped bit and a predefined value of whether the transmitted valid data and the encoded information are inverted. If the value of the received flip bit is detected as a value of the non-predefined flip bit, the received valid data and the encoded information are subjected to polarity statistics, and the second polarity statistical result is obtained, and the first polarity statistical result is obtained. And the second polarity statistical result determines whether to flip the received valid data, otherwise it is determined according to the value of the received flip bit whether to flip the received valid data

In combination with the decoding method, the first implementation manner, or the second implementation manner of the second aspect, in the third implementation manner, if the value of the toggle bit is "01", the valid number of the transmission and the coding information are not inverted. "10" means that the valid data and the encoded information are reversed, or the value of the inverted bit is "10", indicating that the transmitted valid data and the encoded information have not been inverted, "or indicates that the transmitted valid data and the encoded information are inverted.

In a third aspect, an encoding apparatus is provided, including:

And an encoding module, configured to add, before the valid data to be sent, the encoding information and the predefined 2-bit flipping bit for inverting the transmitted valid data and the encoding information, so that the decoding device according to the value of the received flipping bit and the predefined flipping The value of the bit determines whether a flip bit transmission error occurs and whether the received valid data is inverted. The encoded information includes 1. a bit sync header;

a framing module, configured to transmit the transmitted data, the encoded information, and the flipped bits to form the transmitted data.

In combination with the encoding apparatus of the third aspect, in the first implementation, the encoded information further includes error checking and correcting codes for correcting the transmitted valid data and the encoded information.

In combination with the coding apparatus of the third aspect or the first implementation manner, in the second implementation manner, the coding apparatus further includes:

a statistics module, configured to perform polarity statistics on the transmitted valid data and the encoded information, and obtain a first polarity statistical result sent to the decoding device;

The coding module is specifically configured to add coding information before the valid data that is sent, where the coded information includes an i-bit synchronization header, and specifically used to add a predefined valid data to the transmitted data before the valid data is sent. Encoding the inverted 2-bit toggle bit, and determining the value of the toggle bit according to the first polarity statistics result, so that the decoding device determines whether a flip bit transmission error occurs according to the value of the received toggle bit and the value of the predefined toggle bit. And when the decoding device detects that the value of the received flip bit is a value of the non-predefined flip bit, performs polarity statistics on the received valid data and the encoded information, and obtains the second polarity statistical result, and according to the first pole The statistical results and the second polarity statistics determine whether to flip the received valid data. With reference to the coding apparatus, the first implementation manner or the second implementation manner of the third aspect, in the third implementation manner, the value of the predefined toggle bit is "01", indicating that the valid number of the transmission and the coding information are not Flip occurs, "10" indicates that the valid data and encoding information sent are reversed, or the value of the predefined toggle bit is "10", indicating that the valid data and encoding information sent have not been inverted, "0!" indicates valid data sent. And encoding information is flipped"

In a first aspect, a decoding apparatus is provided, including:

The acquiring module is configured to capture valid data, encoding information, and 2-bit flipping bits in the received data frame, where the encoding information includes a 1-bit sync header;

a decoding module, configured to determine whether a value of the toggle bit and a predefined value of a 2-bit toggle bit of the transmitted valid data and the coded information are inverted, whether a flip bit transmission error occurs and whether the valid data is inverted

In conjunction with the decoding apparatus of the fourth aspect, in the first implementation, the encoding information further includes an error check and correction code for error correction of the transmitted valid data and the encoded information.

In combination with the decoding apparatus of the fourth aspect or the first implementation manner, in the second implementation manner, the acquiring module is further configured to obtain the first polarity statistics of the polarity statistics of the valid data and the encoded information sent by the encoding apparatus. Result

The decoding module is specifically configured to: if it is detected that the value of the received flip bit is a value of a non-predefined flip bit, perform polarity statistics on the received valid number 编码 and the encoded information > obtain a second polarity statistical result, and according to The first polarity statistical result and the second statistical result determine whether to flip the received valid data, otherwise it is determined according to the value of the received flip bit whether to flip the received valid data.

In combination with the decoding apparatus of the third aspect, the first implementation manner, or the second implementation manner, in the third implementation manner, if the value of the toggle bit is “0”, the valid data and the encoded information are not flipped. 0" means that the transmitted valid number 编码 and the encoded information are reversed, or the value of the inverted bit is "10", indicating that the transmitted valid data and the encoded information are not inverted, "0 means that the transmitted valid data and the encoded information are inverted"

In a fifth aspect, a codec system is provided, including the above-described encoding device and the above-described decoding device.

The encoding apparatus of the present invention can increase the value of the toggle bit received by the decoding apparatus according to the value of the toggle bit it receives and the predefined toggle bit by adding a pre-defined τ bit toggle bit to the transmitted valid data and the coded information before the transmitted valid data. The value determines whether the received toggle bit has a send error. In order to obtain the correct encoded data; further, determining the value of the transmitted flip bit according to the obtained first polarity statistical result and transmitting the first polarity statistical result to the receiving end, so that the decoding device at the receiving end determines the flipping bit When a transmission error occurs, it can accurately determine which flip error occurs in the flip bit, thereby determining whether to flip the received valid data, and realizing the self-protection of the code number, thereby effectively reducing the bit error rate of the codec system. Illustration

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly introduced. The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work _;

Figure 】 is a flow chart of the actual coding method of the present invention;

2 is a flow chart of a practical example of a decoding method according to the present invention;

3 is a schematic structural diagram of an embodiment of an encoding apparatus according to the present invention;

4 is a schematic structural diagram of an embodiment of a decoding apparatus according to the present invention;

FIG. 5 is a schematic structural diagram of another embodiment of an encoding apparatus/decoding apparatus of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a practical example of a codec system according to the present invention. detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The present invention is a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are protected by the present invention. Fan L

1 is a flow chart of an embodiment of an encoding method according to the present invention. As shown in the figure, the encoding method of this embodiment includes

Step 101: Add, before the valid data to be transmitted, the encoding information and the predefined 2-bit toggle bit _f that is valid for the transmitted data and the encoded information to be caused by the decoding device according to the value of the received flip bit and the predefined flip bit. The value determines whether a flip bit transmission error occurs and whether the received valid data is inverted, the encoded information including a 1-bit sync header In the high-speed serial transmission system, the transmitting end embeds the clock in the data and transmits it to the receiving end. The receiving end recovers the data and the clock separately by using clock and data recovery (CD). In order to accurately recover the data and clock at the receiving end, the transmitted data is encoded at the transmitting end, so that the receiving end has sufficient data edges and good DC balance. To satisfy these characteristics, the pair of transmitting devices is effective. The data adds some information, such as sync header and flip bit, etc., which will occupy certain transmission resources. Therefore, the encoding of the line at the transmitting end will reduce the coding efficiency to a certain extent, and use less coding information and obtain accurate information. High quality coded data is always what people expect. Although the 64B/67B encoding has higher encoding efficiency, when the flipping bit in the encoding has a transmission error, the decoding device at the receiving end cannot judge the error, and thus the received valid data cannot be correctly flipped, so the codec is decoded. the bit error rate is relatively high ₉ embodiment, the encoding apparatus in the transmitting side to be transmitted before valid data increases! The synchronization header of the bit is used to enable the decoding device at the receiving end to determine whether the transmitted effective number is control information or data information according to the synchronization header. Since the i-bit synchronization header is used, the number of code bits occupied by the encoded information can be reduced, which is advantageous for improving coding efficiency. . In the specific application, the synchronization header can be set to indicate the control information ÷ "(T indicates data information, and the synchronization header can be set to "0" for control information, and "1" for data information. For the flip bit to appear in the transmission The error is judged to reduce the decoding error caused by the inverted bit transmission error. In this embodiment, the number of bits of the inverted bit is extended to 2 bits, that is, the encoding device adds a predefined pair before the valid data to be transmitted. The transmitted valid number 椐 and the 2bii flip bit of the encoded information flipping, because the 2bit flip bit is used, when the decoding device of the receiving end acquires the 2bii flip bit, it can determine whether the flip bit has a transmission error according to the value of the flip bit. "00", "Π", "0Γ and "0" are four types. Since the probability of the 2-bit toggle bit changing at the same time in transmission is small, only the bit transmission error can be encoded and protected, that is, predefined. The 2-bit flipping bit can be selected from the combination of "01" and "10" or the combination of "00" and "11", and the decoding device at the receiving end can judge according to the flipping bit it receives. Transmission error occurred. I.e. encoding and decoding devices can agree on a selected one of said predefined combination of whether the effective data transmission and the coding information bits inverted 2-bit flipping

In practical applications, in order to improve the DC balance characteristic of the codec system, in the preferred embodiment of the present invention, "01" and "10" are selected as the values of the predefined flip bits, and "00" and "1 1" are selected. As a value of the non-predefined flip bit, when a 1-bit change occurs in the transmission of "0Γ and 'Ί Ο", the receiving side decoding device can detect the transmission error, and since "0!" and "]0" are selected as the pre-selection The value of the flipped bit is defined. The "1" and "0" in the toggle bit are equal, which is beneficial to minimize the difference between the number of "0" and the "0" in the transmitted data, which is beneficial to improve the DC balance of the codec system. Features, from! 3⁄4 helps to reduce the bit error rate of the system.

In an implementation manner of this embodiment, if the value of the predefined toggle bit is "01", it indicates that the valid data and the coded information that is sent have not been inverted "10", indicating that the valid data and the coded information are reversed. When the decoding device decodes the value of the inverted bit to be "0", it is confirmed that the encoding device at the transmitting end does not reverse the transmitted significant number 编码 and the encoded information at the time of encoding, and if the value of the obtained inverted bit is "10", it is confirmed. The encoding device of the sending end reverses the transmitted effective number 编码 and the encoding information during encoding, and can obtain the valid data to be actually sent before the encoding of the transmitting end encoder by inverting the received valid data; The value is either "00", that is, the value of the obtained toggle bit is a value of the non-predefined flip bit, then it is confirmed that the transmission has an error, and the sender needs to retransmit the code number or need to further determine which transfer occurs. Error and handle it accordingly

In another implementation of the embodiment, when the value of the predefined toggle bit is "0", the valid data and the encoded information are not inverted, and "01" indicates the effective number and encoding of the transmission. When the information is inverted, the processing method after the decoding device of the receiving end acquires the flipping bit is similar to the processing in the above implementation manner.

In practical applications, when the decoding device finds a flip bit transmission error, in order to avoid retransmission of the encoded data, the encoding device also transmits to the decoding device information for determining which flipping error occurs in the flipping bit, as long as the encoding device and the decoding device The matching information is obtained by the same algorithm, and the encoding device transmits the captured comparison information to the decoding device, and the decoding device compares the received comparison information with the self-calculated comparison information to obtain the flipping bit. The transformation situation. If the encoding device determines the value of the inverted bit to be transmitted based on the first polarity statistical result obtained by the encoding device, the valid data and the encoding of the transmitting device before the valid data, the encoded information and the inverted bit to be transmitted constitute the transmitted data frame. The information is subjected to polarity statistics, and the first polarity statistical result is obtained, and the first polarity statistical result is sent to the decoding device at the receiving end, so that the decoding device can receive the value when detecting the value of the non-predefined turning bit. The effective number 编码 and the encoded information are entered into the row polarity statistics, and the second polarity statistical result is obtained, and according to the received first polarity statistical result and the second polarity statistical result, it is determined which one of the inversion bits in the transmission occurs. The flipping error means that the decoding device compares the first polarity statistical result with the second polarity statistical result to determine whether the flipping bit is in the transmission error. For example, a predefined flip The values of the transposition are "10" and ^<s 01 ", and 3⁄4 "I and "00" are the values of the non-predefined flip bits. When the value of the detected flip bit is "00", that is, the non-predefined flip The value of the bit indicates that the transmission has an error. At this time, the decoding device obtains the second polarity statistical result based on the polarity statistics of the received valid data and the encoded information, if the second polarity statistical result is received and received. If the first polarity statistics result is consistent, it is confirmed that the encoding device does not reverse the transmitted valid data and the encoded information, otherwise the confirmation encoding device reverses the transmitted valid data and the encoded information, and the value of the inverted bit can be determined from "10" is also changed from "01", so as to further determine whether the received valid number is flipped to obtain valid data to be transmitted before encoding by the encoding device.

Step 102: The transmitted valid data, the encoded information, and the flipped bits constitute a transmitted data frame. After the encoding apparatus completes the encoding of the transmitted data in the above step 01, the transmitted valid data > encoding information and the inverted bits constitute the transmitted digital frame, and the decoding device sent to the receiving end, for example, the valid data to be transmitted is 64. The number of bits 椐, the encoding information is a 1-bit sync header, and the flipping bit is 2 bits, which can form a 67-bit data frame to be transmitted, where [63:0] is valid data, [64] is a sync header.

[65:66] for flipping

In this embodiment, the encoding apparatus increases the value of the flipped bit received and the predefined by the decoding device by adding a predefined 2-bit toggle bit to the transmitted valid data and the encoded information before transmitting the valid data. The value of the toggle bit determines whether the received toggle bit has a transmission error to retrieve the correct coded data; further, the value of the transmitted flip bit is determined and the first pole is determined by the obtained statistical value of the first polarity The statistical statistic is sent to the receiving end, so that the decoding device at the receiving end can accurately determine which flipping error occurs in the flipping bit when determining the transmission error of the flipping bit, thereby determining whether to perform the flipping of the received valid data to realize the self-encoding data. Protection, which effectively reduces the bit error rate of the codec system, improves the coding shield, and ensures the coding efficiency is above 90%<,

In an actual application, in order to further reduce the error rate of the codec system, the present invention further carries an error detection for correcting the transmitted valid data and the encoded information on the basis of the above embodiments. The error checking and correcting (ECC) code can realize the transmission of the effective number t and the encoded information by using the £CC code in the encoded information, and the transmitted data is transmitted by using the ECC code. The effective data and the encoded information realize the self-protection of the encoding, which can avoid the problem that the receiving end decoding device needs to retransmit the data when the data transmission error is found, and further reduces the delay of the data transmission. In the specific implementation, if the valid data transmitted is 64-bit, you can set the 3-bit ECC code, which constitutes the transmitted 70-bit digital frame, where [ ⁶³ :0] is valid data, [66:64 "! is ECC code, [67] is synchronous Head, 『69:68 j is the flip bit if four channels are used for transmission, then the 2-bit ECC code can correct the 256-bit valid data and the 1-bit error in the 4-bit sync header.

2 is a flowchart S of an embodiment of a decoding method according to the present invention. As shown in FIG. 2, the decoding method of the embodiment is:

Step 20: Obtain valid data encoding information and a 2-bit flipping bit in the received data frame, where the encoding information includes a 1-bit sync header.

After the decoding device at the receiving end of the high-speed serial transmission system obtains the encoded data sent by the transmitting end, the data frame is parsed, and the valid data, the encoded information and the 2-bit flipping step carried in step 202 are obtained, according to the value of the flipping bit. And determining whether the value of the 2-bit flip bit inverted by the transmitted valid data and the encoded information determines whether a flip bit transmission error occurs and whether the valid data is inverted _β

The decoding device can determine whether an inverted bit has occurred during transmission based on the value of the inverted toggle bit and the value of the predefined toggle bit. For example, if the value of the received toggle bit is a value other than the predefined flip bit, then it is confirmed that the transmission has an error, and the sender needs to retransmit the coded data or further determine which transmission error occurred in the flip bit and perform corresponding processing. The determination of the flipping bit by the decoding device in this step and the corresponding processing are as detailed in the above description of the encoding method embodiment, and are no longer obscured here.

The decoding apparatus in this embodiment determines whether a flip bit transmission error occurs and whether the valid data is inverted according to the value of the received toggle bit and the value of the predefined toggle bit, and may transmit a transmission error in the transfer bit during transmission. Corresponding processing and obtaining the correct coded data can effectively reduce the bit error rate of the codec system caused by the transmission error of the flip bit, thereby improving the coding quality.

In practical applications, in order to improve the error correction capability of the encoded data, the encoded information acquired by the decoding device further includes error checking and correcting ECC for correcting the transmitted valid data and the encoded information, and is effective for transmitting. encoding information into data and encoding protection line, further reducing the bit error rate codec system _β

In a specific real-time example, the decoding device obtains whether the flipping bit transmission error occurs and whether the valid data is reversed according to the value of the toggle bit and the value of the predefined toggle bit, and also acquires the encoding device pair transmission. The first polarity statistical knot of the effective number 椐 and the encoded information for polarity statistics 杲; if it is detected that the value of the received flip bit is a value of a non-predefined flip bit, polarity statistics are performed on the received valid data and the encoded information, and the second polarity statistical result is obtained, and according to the first polarity The statistical result and the second polarity statistical result determine whether to flip the received valid data. If the value of the predefined flip bit is detected, it is confirmed that no error occurs during the sending of the inverted bit, and whether the value of the inverted bit is directly determined is determined according to the value of the inverted bit. Flip the valid data received.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, the program is executed at the time of execution. For example, the central processing unit (CPU) performs the steps including the foregoing method embodiments; and the foregoing storage medium shield includes: read-only memory (ROM), random storage 'storage ■ (random access memory, RAM), disk or disc, etc. can store various program code shields. Therefore, the embodiment of the present invention further provides a processor for performing the method steps of the embodiment shown in FIG. 1 or FIG. 2 above. The embodiment of the invention further provides a storage device; the storage device is configured to store the program instructions corresponding to the method steps of the embodiment shown in FIG. 1 or FIG. 2 above.

Embodiments of the present invention further provide an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments.

3 is a schematic structural diagram of an embodiment of an encoding apparatus according to the present invention. As shown in FIG. 3, the encoding apparatus of this embodiment includes: an encoding module 0 and a framing module 1], wherein the encoding module 10 is configured to be effective in sending Before the data, the encoding information and the predefined τ bit flipping bit for the transmitted valid data and the encoding information are inverted to enable the decoding device to determine whether the flip bit transmission occurs according to the value of the received flip bit and the value of the predefined toggle bit. The error and whether to flip the received valid number data, the encoding information includes a 1-bit sync header; the framing module 1 1 is configured to transmit the valid data encoding information and the flip bit into the transmitted data frame.

In the embodiment, the encoding module adds 1 bit synchronization header information before the valid data to make the decoding device at the receiving end know whether the encoded data is data information or control information, and the added 2-bit flipping bit can make the decoding device. It is known whether a transmission error has occurred in the encoded data transmission, so that the decoding apparatus can perform corresponding decoding processing according to different situations. If no transmission error occurs, it is determined whether to flip the valid data directly according to the value of the received flip bit. Otherwise, it is necessary to transmit the retransmitted encoded data or determine whether the valid data is performed according to further determining which error has occurred. Inverted, in this way, the embodiment of the present invention can effectively reduce the occurrence of errors caused by the flip bit transmission. In a specific application, the encoding apparatus of this embodiment may further include a statistic module (not shown) for performing polarity statistics on the transmitted significant digits and the encoded information, and acquiring the first polarity statistics sent to the decoding device. Assume that, from the encoding module, before the valid data is sent, a predefined 2-bit flipping bit for the transmitted valid data and the encoded information is added, and the value of the flipping bit is determined according to the first polarity statistical result, so that the receiving end Decoding means determining, according to the value of the received toggle bit and the value of the predefined toggle bit, whether a toggle bit transmission error occurs, and the ΐ decoding means detects that the value of the received toggle bit is a value of a non-predefined toggle bit, The valid data and the encoded information are carried out. The polarity statistics are obtained, and the second polarity statistical result is obtained and determined according to the first polarity statistical result and the second polarity statistical result whether the received valid data is inverted.

In practical applications, in order to further improve the error correction capability of the coding, the coded information further includes 4 error checking and correcting the ECC code for correcting the transmitted effective number 编码 and the encoded information, and the transmission can be implemented by the ECC code. The effective data and coding information are protected by coding, thereby further reducing the bit error rate of the codec system.

The coding apparatus of this embodiment can be used to implement the technical solution of the foregoing coding method embodiment, and the working principle and the technical effects achieved are similar, and no further details are fascinated here.

4 is a schematic structural diagram of an embodiment of a decoding apparatus according to the present invention. As shown in FIG. 4, the decoding apparatus of this embodiment includes: a capturing module 20 and a decoding module 21, wherein the acquiring module 20 is configured to acquire received data. The valid data, the encoded information, and the 2-bit flipping bit, the encoding information includes a 1-bit sync header; the decoding module 21 is configured to determine whether a flip bit transmission error occurs according to the value of the toggle bit and the value of the predefined toggle bit And whether to flip the valid data.

In this embodiment, the obtained module obtains the number of encoded frames transmitted by the transmitting end, and decomposes the data frame to obtain the valid data> encoding information and the 2-bit flipping bit, and the decoding module obtains the flipping bit and the pre-acquisition according to the acquiring module. The value of the defined 2-bit flip bit is compared to determine whether a flip bit transmission error occurs for corresponding processing, and the bit error rate caused by the flip bit transmission error can be reduced. In a specific application, corresponding to the encoding of the encoding device at the transmitting end. The encoding information decoded by the decoding device may further include an ECC code for encoding and protecting the transmitted valid data and the encoded information. When the transmitting end further transmits the first polarity system # result, the acquiring module of the decoding device further acquires the The statistical information is collected, so that when the value of the received flip bit is detected as a value of the non-predefined flip bit, the decoding module performs the polarity statistics on the received valid number 编码 and the encoded information to obtain the second polarity statistic. And comparing, according to the first polarity statistical result received by the obtaining module, the second statistical result obtained by comparing the statistically obtained data, to determine whether to perform the flipping of the received valid data, and when the value of the received flipping bit is detected as a predefined When flipping the value of the bit, it is directly determined according to the value of the received flip bit whether to flip the received valid data without having to perform polarity statistics on the received valid number and the encoded information.

The decoding device of the present embodiment can be used to implement the technical solution of the foregoing decoding method embodiment, and the working principle and the technical effects achieved are similarly not described in detail herein.

FIG. 5 is a schematic structural diagram of another embodiment of an encoding apparatus/decoding apparatus according to the present invention. As shown in FIG. 5, the encoding apparatus/decoding apparatus of this embodiment includes a CRJ 50, a memory 52, a communication interface 54, and a bus 53, wherein the CPU 50 can be used. Executing the operation steps in the above embodiment of the encoding method or the decoding method, the memory 52 can be used to store program instructions corresponding to the steps in the above-described encoding method embodiment or decoding method embodiment, and the communication interface 54 can be used to transmit or The received encoded data frame ₅ bus 53 is used for communication between the various functional units within the encoding device/decoding device. In the actual application, if the encoding device is shown in FIG. 5, when the CPU 50 acquires the valid data to be transmitted, the CPU 50 encodes the transmission data according to the program instruction stored in the memory 52, and forms an encoded data frame, which is sent to the communication interface 54. At the receiving end, if the decoding device is shown in FIG. 5, when the communication interface 54 receives the encoded data frame transmitted by the transmitting end, it transmits it to the CPLI 50, and the CPU 50 parses the digital frame according to the program instruction stored in the memory 52. Process to obtain valid data before encoding.

FIG. 6 is a schematic structural diagram of an embodiment of a codec system according to the present invention. As shown in FIG. 5, the codec system of this embodiment includes the above-mentioned coding apparatus shown in FIG. 3 or FIG. 5 and FIG. 4 or FIG. 5 described above. The decoding device 200 is shown. The encoding device 100 is configured to encode the number of frames to be transmitted to form a transmitted encoded data frame, and the decoding device 200 is configured to decode the encoded data frame obtained by the encoding device and capture the data to be transmitted before encoding by the encoding device.

The codec system of the present embodiment can increase the 2-bit predefined toggle bit by the encoding device before the valid data transmitted, so that the decoding device can receive the data encoded by its transmission according to the value of the received toggle bit and the predefined The toggle bit is compared to determine if a transfer bit has occurred in the transfer. An error can be taken to take the appropriate processing to obtain an accurate data before the encoding of the encoding device.

The coding and decoding system of this embodiment can complete the technical solution of the technical solution and the decoding method embodiment of the foregoing coding method embodiment, and the working principle and the technical effects achieved are similar, and are not detailed here. Description ₄

It will be apparent to those skilled in the art from the foregoing description that the present invention may be implemented in hardware, or in a firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or embodied as one or more instructions or code on a computer readable medium, including computer storage media and communication media. which facilitates communication media includes from one place to another medium of any transfer of a computer storage media sequence may be any available media that can be accessed by a computer as an example, but not ^〖: Gen in: a computer-readable media can comprise RAM, ROM , EEPROM, CO-ROM or other optical disc storage, magnetic storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of an instruction or data structure and that can be accessed by a computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is a coaxial cable, a fiber optic cable, a twisted pair cable, a digital subscriber line (DSL), or a wireless technology such as infrared, radio, and microwave, a ₅ coaxial cable is transmitted from a website > server or other remote source. , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared wireless and oscillating waves are included in the fixing of the associated medium. As used in the present invention, a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically copied, and The disc uses a laser to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

In the above, the above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and principles of the present invention, are It should be included in the scope of protection of the present invention.

Claims

Rights request

1. An encoding method, comprising:

Adding the encoding information and the predefined 2-bit toggle bit to the transmitted valid data and the encoding information before the valid data is transmitted, so that the decoding device determines whether the value of the inverted toggle bit and the value of the predefined toggle bit are determined according to the value of the received toggle bit A flip bit transmission error occurs and whether the received valid data is inverted, the encoded information includes a bit synchronization header;

The transmitted valid data, encoded information, and flipped bits constitute the transmitted data frame.

The method according to claim 1, wherein the encoded information further comprises error checking and correcting codes for correcting the transmitted valid data and the encoded information.

The method according to claim 1 or 2, wherein before the transmitting the valid data, the encoded information, and the flipped bits to form the transmitted data frame, the method further includes:

Performing polarity statistics on the transmitted valid data and the encoded information, and extracting the first polarity statistical result sent to the decoding device;

Determining a value of the transmitted flip bit according to the first polarity statistics result, so that the decoding device detects the value of the received flip bit as a value of the non-predefined flip bit, and performs polarity statistics on the received valid data and the encoded information. Obtaining a second polarity statistical result, and determining whether to perform the flipping of the received valid data according to the first polarity statistical result and the second polarity statistical result.

The method according to any one of claims 1 to 3, characterized in that the value of the predefined toggle bit ^Λ 01 " indicates that the transmitted valid data and the coded information are not inverted, and ^£ Ί 0" indicates that the transmission is performed. The valid data and the encoded information are inverted, or the value of the predefined flip bit is "10", indicating that the transmitted valid number 编码 and the encoded information are not inverted, "0Γ, indicating that the transmitted valid number 编码 and the encoded information are inverted.

5. A decoding method, comprising:

Whether or not a flip bit transmission error occurs and whether the valid data is inverted is determined based on the value of the toggle bit and a predefined value of whether or not the transmitted valid data and the encoded information are inverted.

6. A method as claimed in claim 5, characterized in that said encoded information further comprises error checking and correction for error correction of the transmitted valid data and the encoded information. 7. The method according to claim 5 or 6, wherein determining whether a flip bit occurs is generated according to a value of the toggle bit and a predefined value of a 2-bit toggle bit inverted by the transmitted valid data and the coded information. Before sending the error and whether to flip the valid data, the method further includes: capturing a first polarity statistical result of performing polarity statistics on the valid data and the encoded information that is sent by the encoding device;

Correspondingly, determining whether a flip bit transmission error occurs and whether the valid data is inverted is performed according to the value of the flipped bit and a predefined value of whether the transmitted valid data and the encoded information are inverted.

If it is detected that the value of the received flip bit is a value of a non-predefined flip bit, polarity statistics are performed on the received valid data and the encoded information, and the second polarity statistical result is obtained, and according to the first polarity statistics The result and the second polarity statistics determine whether to flip the received valid data or determine whether to receive the valid data according to the value of the received flip bit.

8. A method according to any one of claims 5 to 7, characterized in that if the value of the toggle bit is "0", the transmitted valid data and the encoded information are not inverted, and "10" indicates the valid data transmitted. The coded information is inverted, or the value of the toggle bit is "10", indicating that the transmitted valid data and the encoded information are not inverted, "0", indicating that the transmitted valid data and the encoded information are inverted.

9. An encoding device, comprising:

And an encoding module, configured to add, before the valid data to be sent, the encoding information and the predefined τ bit flipping bit of the transmitted valid data and the encoding information, so that the decoding device roots the value of the received flipping bit and the predefined The value of the toggle bit determines whether a flip bit transmission error occurs and whether the received valid data is inverted, the encoded information including a 1-bit sync header;

A framing module is configured to combine the transmitted valid data, the encoded information, and the flipped bits into the transmitted data i.

10. The apparatus according to claim 9, wherein the encoding information further comprises error checking and correcting codes for correcting the transmitted valid data and the encoded information.

The device according to claim 9 or 0, further comprising: a statistics module, configured to perform polarity statistics on the valid data and the encoded information, and obtain a first polarity statistics sent to the decoding device. Result

The encoding module is specifically configured to add coding information before the effective number of transmissions, where the coding The information includes a 1-bit sync header; and specifically for adding a predefined one before the valid data to be transmitted. No, the 2-bit flip bit of the transmitted valid data and the encoded information is inverted, and the flip is determined according to the first polarity statistical score. The value of the bit, such that the decoding device determines whether a toggle bit transmission error occurs based on the value of the received toggle bit and the value of the predefined toggle bit, and when the decoding device detects that the value of the received toggle bit is a non-predefined flip The value of the bit is used to perform polarity statistics on the received valid data and the encoded information, obtain the second polarity statistical result, and determine whether to perform the flipping of the received valid data according to the first polarity statistical result and the second polarity statistical result.

2. The apparatus according to any one of claims 9 to 1, wherein the value of the predefined toggle bit is "0" indicating that the transmitted valid data and the encoded information are not inverted, and "10" indicates that the transmission is performed. The valid data and the encoded information are inverted, or the value of the predefined toggle bit is 'Ί Ο' indicating that the valid data and the encoded information are not inverted, and "01" indicates that the transmitted valid data and the encoded information are inverted.

13. A decoding device, comprising:

An acquiring module, configured to acquire valid data, encoding information, and a 2-bit flipping bit in the received data frame, where the encoding information includes a 1-bit synchronization header;

a decoding module, configured to determine whether a flip bit transmission error occurs and whether the valid number is performed according to a value of the flip bit and a predefined value of a transmitted 2-bit toggle bit of the transmitted valid number 编码 and the encoded information Flip.

14. The apparatus of claim 13, wherein said coding information further comprises means for encoding user data and error correction information transmitted error check and correction _code:

The device according to claim 3 or 14, wherein the obtaining module is further configured to obtain, by the encoding device, a first polarity statistical result of the transmitted valid data and the encoded information 迸-row polarity statistics;

The decoding module is specifically configured to: if the value of the received flip bit is detected as a value of the non-predefined flip bit, perform polarity statistics on the received valid data and the encoded information, and obtain a second polarity statistical score. And determining whether to perform the flipping of the received valid data according to the first polarity statistical result and the second statistical result, or determining whether to perform the flipping of the received valid data according to the value of the received flipping bit

The apparatus according to any one of claims 13 to 5, wherein if the value of the inverted bit is "0", it indicates that the transmitted valid data and the encoded information are not inverted, and "10" indicates the effective number of the transmission.椐 and the encoded information is flipped, or the value of the flip bit is "10" The valid data and encoded information sent have not been flipped, "0Γ indicates that the valid number sent and the encoded information are inverted.

A codec system, comprising: the encoding device according to any one of claims 9 to 2, and the decoding device according to any one of claims B to 1.6.