| 摘要 |
PROBLEM TO BE SOLVED: To decompose frame data of many kinds and various field constitutions by sectioning and decomposing a received serial data sequence in 8-bit units according to data stored in the memory cell corresponding to an address received from a memory control part and storing it in a memory. SOLUTION: The reception data sequence to be an object for frame analysis is inputted in serial data form. The received data sequence is sectioned and decomposed in 8-bit unit (D0 to D7) inside. An index value for frame decomposition is always given in the form of a data sequence frame decomposition reference point F (for left shift input) and a frame decomposition reference point R (for right shift input) prepared in a sequence memory 2. In the sequence memory 2, a bit mask process is performed for the frame decomposition reference points with an 8-bit mask bit pattern MB. In a buffer field memory 3, storage and holding in memory cells in 8-bit units after the mask processing are performed.
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