Cryptography – Key management – Having particular key generator
Patent
1983-12-29
1987-07-28
Cangialosi, Salvatore
Cryptography
Key management
Having particular key generator
380 36, 375112, H04L 900
Patent
active
046835865
ABSTRACT:
A scrambling system for an audio frequency signal is disclosed which employs a timebase-compressing and/or expanding system to measure the compressed and/or expanded amount of a segment time length caused in a transmission recording and reproducing system. In the scrambling system of the present invention, a marker signal is inserted into a portion between the adjoining segments and transmitted from an encoder side to a decoder side, while at the decoder side, this marker signal is detected, the synchronization is achieved by this marker signal along the compression and expansion of the segment length and the respective segments are rearranged to the original correct order. Thus, the connected portion between the segments can be made smooth so that it is possible to obtain the scrambling system for an audio frequency signal having high accuracy and high reliability.
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Fukami Takeshi
Sakamoto Akira
Sugita Takehiro
Toyoshima Masakatsu
Cangialosi Salvatore
Eslinger Lewis H.
Lewis Aaron J.
Sinderbrand Alvin
Sony Corporation
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