Ultra-long data variable length encoding synthetic system

Abstract

An ultra-long data variable length encoding synthetic system comprises a data pre-processing module, a data decoding module, a barrel shift register module and a shift control module. Ultra-long data and corresponding effective length identification data are sent to the data pre-processing module together. The data pre-processing module equally splits the input ultra-long data and corresponding effective length identification data into multiple fixed-length data according to the required synthetic effective data length, the numbers of the ultra-long data and corresponding effective length identification data are the same after being split. The fixed-length data and the fixed-length effective length identification data are synchronously output, the fixed-length data are sent to the barrel shift register module, and the fixed-length effective length identification data are sent to the data decoding module to be converted into the uniform format, and then are sent to the barrel shift register module. The barrel shift register module performs shift treatment for the fixed-length data according to the output of the decoding module. The shift control module synthesizes the output of thebarrel shift register module and then outputs the result when the total shift amount is equal to the required synthetic effective data length.

Description

technical field [0001] The invention relates to a data processing system, in particular to a data processing system for performing variable-length code synthesis processing on ultra-long data. Background technique [0002] As an important technology of video compression, variable length code data synthesis is widely used in various international video standards. It mainly synthesizes compressed and encoded data to improve data compression efficiency and facilitate transmission. One of the main problems in variable-length code data synthesis is that since the effective length of each variable-length code is not fixed, the location of the current variable-length code in the synthesized data depends on the position of the previous variable-length code and the effective length of the current data. It is determined, and at the same time, in order to achieve real-time code synthesis, it is necessary to complete the synthesis of a variable-length codeword within one clock cycle. ...

AI Technical Summary

Problems solved by technology

One of the main problems in variable-length code data synthesis is that since the effective length of each variable-length code is not fixed, the location of the current variable-length code in the synthesized data depends on the position of the previous variable-length code and the effective length of the current data. Definitely, at the same time, in order to achieve real-time code synthesis, it is necessary to complete the synthesis of a variable-length codeword within one clock cycle

However, this simple shift processing has some shortcomings in some specific application fields. For example, for the variable-length coding of ultra-long data, if only simple shift processing is used, the program cannot be synthesized, resources are insufficient, and it is difficult to implement

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