Scrambler

Abstract

Abstract PURPOSE:To obtain a scramble with simple constitution, by repeating the operation that input data is divided into plural small blocks, each block is converted linearly after the block is converted with respect to signal by a key signal. CONSTITUTION:The input data are divided into n-blocks comprising l bits each by an input buffer 101 and inputted to a linear converter 103 after the code conversion is done with a code converter group 102 consisting of n sets of code converters S11-S1n performing code conversion determined with a bit pattern K1 functioning as a key. An output of the said converter 103 is converted with respect to signal in the same way as the case of the converter group 102 via the n sets of the code converter groups using a key K2 and inputted to the next linear converter. Signals added plural times with the repeated operations like this operation are outputted via an output buffer 104 as scramble signals.

Inventors

• 👤 Hiroshi Uno
• 👤 宇野　裕志
• 👤 Eiji Okamoto
• 👤 栄司 岡本

Bibliographic Details