| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely and speedily change a flame length and a synchronizing flag with a reduced processing quantity by allowing a receiving side to execute synchronizing flag extracting processing with a specific byte when a transmission side changes a half-fixed frame length. SOLUTION: Multiplexed header extracting processing is repeated by a 20×xN-byte period until a frame length change confirming response is made. When the response is made, a variable (s) for protecting synchronization and a multiplexed header interval variable (m) are initialized and multiplexed header extracting processing is repeated by 20×L byte until a header is extracted. When it is extracted, an area between this multiplexed header and a multiplexed header just before it is extracted as an information field and transferred to a master layer. Then, whether an interval (m) between the multiplexed headers is 20×M byte and whether the variable (s) reaches a prescribed number of multiplexed extraction are judged and until both of them are satisfied. (s) and (m) are increased and multiplexed header extracting processing is continued by 20×L byte. When they are satisfied, reception of a 20×M byte period is executed.</p> |
