"A Method For Producing A Coded Output Signal As A Function Of A Change In A Parameter Including A Logic State Of The Input Signal And A Method Of Decoding Thereof"


Updated 11 months ago

Abstract

This invention relates to avariable aperture coding/decoding systm for use in a spread specturm system provides multiple phase coding of a input NRZ bitstream.Each bit of a coded output signal is coded to encompass a predetermined different number of clock periods depending on the logic level of the input signal.A coded bit exhibits a predetermined reference number of clock periods,eg.,9,when the input signal does not exhibit a logic level transiction.When the input signal exhibits a phase change from a 0 to a 1 logic level,the bit width of an associated coded bit is increased by 1 clock period,to 10 clock periods.When the input signal exhibits a phase change from a 1to a0 logic level,the bit width of an associated coded bit is decreased by 1clock period, to 8 clockperiods.Thus the coded output signal may contain three types of information represented by a bit width change proportional to predetermined factor N.

Information

Application ID IN/PCT/2000/0257/KOL
Invention Field NO SUBJECT
Date of Application 2000-08-24
Publication Number 04/06

Applicants

Name Address Country Nationality
THOMSON LICENSING S.A.., 46,QUAI A.LE GALO, 92648 BOULOGNE,CEDEX, France France

Inventors

Name Address Country Nationality
MOHAN CHANDRA 12970 FLEETWOOD DRIVE NORTH, CARMEL INDIANAN 46032, U.S.A. U.S.A.
RIEDL,WILHELM ERNST 8837 FLUVIA TERRACE INDIANAPOLIS,INDIANA 46250, U.S.A. U.S.A.
ZHANG ZHIMING 10854 BELAIR DRIVE INDIANAPOLIS,INDIANA 46280 U.S.A. U.S.A.

Specification

Orders

Applicant Section Controller Decision Date URL