Predictive coding system for facsimile signal
专利汇可以提供Predictive coding system for facsimile signal专利检索，专利查询，专利分析的服务。并且PURPOSE: To increase compression efficiency by suppressing redundancy by expressing information at a predection-failure position on a coding scanning line by the number of times of the generation of each state at several specific picture-element positions on a preceding line scanning before coding.
CONSTITUTION: Pieces of information on picture elements A to C in reference scanning line memory 13 picture element X on a coding scanning line, and picture- element information on D one picture-element before X are predicted. At the same time, pieces of picture-element information on B and C are inputted to mode discriminator 16 to make a decision on each mode M and the numbers of times of the generation of the modes are counted by counters 17 to 20. Then, decided mode information is inputted to control circuit 22. When a predicted value determined by pieces of information on A to D agrees with X, prediction unit 15 sends a signal of "0" and when not, it sends "1" to circuit 22. Circuit 22 continues the shift operation and input shift operation of memory 13 on receiving "0" and interrupts the shift operation on receiving "1" to instruct discrimination code generator 25 to generate a discrimination code for the mode, so that only the count output of the mode equivalent to "1" among outputs of counters will be extracted from gate 27.
COPYRIGHT: (C)1980,JPO&Japio，下面是Predictive coding system for facsimile signal专利的具体信息内容。
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