| 摘要 |
<p>PURPOSE:To simplify the circuit constitution by forming a unique word signal pattern and a data signal pattern based on an output of a common scramble signal pattern generating circuit. CONSTITUTION:The scramble signal pattern generating circuit 11 is provided with n-stage of shift registers 17 and an exclusive circuit 18. A prescribed bit pattern of n-bit constitution is given to the register 17 as an initial value. An AND circuit 12 sends an output of the circuit 11 to one input of an exclusive OR circuit 14 from the start of the unique word region to the end of the data region. An AND circuit 13 sends the input data to other input of the circuit 14 for a period of data region. The circuit 14 forms the exclusive OR between the outputs of the circuits 12 and 13 and outputs the result. Thus the circuit constitution is simplified.</p> |
