Signal scrambling transmission system

Details Signal scrambling transmission system Signal scrambling transmission system

H - Electricity

04

L

340/70

H04L 25/49 (2006.01) H04L 25/03 (2006.01)

Patent

CA 1288834

SIGNAL SCRAMBLING TRANSMISSION SYSTEM Abstract of the Disclosure There is disclosed a signal scrambling transmission system in which the data is scrambled a the transmit end by logically combining the data with a pseudo random sequence generated by a ROM prior to transmission. The data is recovered at the receive end by logically combining the scrambled data with the same pseudo random sequence generated by a ROM. The ROM at the transmit end is divided into frames with a synchronization word and a frame count (index) word imbedded in each frame. The synchronization word and index word are transmitted with each frame of data and are used to synchronize the ROM at the receive end with the incoming scrambled data. The transmit end ROM is divided into 32 frames each being 4,096 bits long. Each frame has a 27-bit synchronization word, a 5-bit index word, and 4,064 bits of pseudo random sequence. 2326-1-0010

571021

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