| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a data filtering apparatus in which high-speed flexible data filtering is performed in a simple configuration. <P>SOLUTION: As a data pattern generating circuit, a counter circuit 33 successively generates pattern data CNT[5:0] corresponding to a position in a data frame synchronously with frame data MRD[7:0] and inputs the pattern data to an address input terminal of a memory 36 together with the frame data MRD[7:0]. As a result, the frame data MRD[7:0] and the pattern data CNT[5:0] are stored in a designated address. Data having a value indicating whether or not the value of the frame data MRD[7:0] fulfills selection conditions are outputted from the memory 36. Based upon the data value, a judging circuit 40 judges whether or not the inputted data frame is to be outputted. <P>COPYRIGHT: (C)2004,JPO</p> |
