SCRAMBLE METHOD

PURPOSE: To disable the decoding of a scramble pattern from the outside even when field lengths on respective transmission and reception sides are not equal by loading scramble after transmissive data for one packet are made full by embedding a pseudo random number sequence in a section after the en...

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Bibliographic Details
Main Author KUNO YUTAKA
Format Patent
LanguageEnglish
Published 10.01.1997
Edition6
Subjects
ADVERTISING
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
SEALS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:PURPOSE: To disable the decoding of a scramble pattern from the outside even when field lengths on respective transmission and reception sides are not equal by loading scramble after transmissive data for one packet are made full by embedding a pseudo random number sequence in a section after the end of transmissive data. CONSTITUTION: Transmission data 8 are transmitted by exclusively ORing a bit train generated by a scramble pattern generator 2. When the remaining data of transmission data 8 are less than transmission data for one packet, the excess part of the final packet is filled with the bit string of pseudo random number sent from a pseudo random number generator 3. On the reception side, received data 12 are successively stored in a buffer and only the required part is segmented by watching a field 10a of frame length information, moved to a buffer 5 and outputted by exclusively ORing a bit train generated by a scramble pattern generator 7.
Bibliography:Application Number: JP19950149036