公开(公告)号：JPH07123074A

公开(公告)日：1995-05-12

申请号：JP4919594

申请日：1994-03-18

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUNICATION

Inventor： KIMU YON SOBU ,  CHIE SON IN ,  PAKU HON SHIKI

IPC: H04K1/04 ,  H04L9/12 ,  H04L9/22 ,  H04Q3/00 ,  H04L12/28

Abstract: PURPOSE: To process parallelly distributed samples for an ATM physical layer at a slower operation speed by processing transmission data parallelly for 8 bits by using a common semiconductor element. CONSTITUTION: When an optional value not '0' is set by using initial value setting signals SETB at the time of initialization, a PRBS generator 22 generates the random number of the 8 bits for executing a prescribed generating polynomial (X +X +1) for distributed sample descrambling. A descrambler 21 adds output signals PN7-PN0 from the generator 22, performs descrambling and then, outputs the next descrambled data TD7-TD0. A sample processor 23 extracts a second bit which is ATM cell data in the random number to be added to a fifth octet and a sixth bit in the random number to be added to a 31st octet and outputs synchronizing signals CRR1 and CRR0 for synchronizing the generator 22.