H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/24 (2006.01) H04J 3/07 (2006.01) H04L 13/08 (2006.01) H04L 25/05 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2050656
A digital data radio transmission system for reproducing pre-velocity-modulation input frame data from the radio frame data subjected to velocity modulation and pulse insertion. The system includes a write counter that divides write clock pulses under control of frame position pulses to output write pulses; an elastic memory that temporarily stores the input frame data and the frame position pulses as per the write pulses; and a timing pulse generator that outputs control pulses in response to the supply of read clock pulses under control of the frame position pulses from the elastic memory. The system fur- ther comprises a read counter that divides the write clock pulses by the same number as with the division by the write counter to output read pulses; and a pulse inserting sec- tion that inserts pulses into the output frame data read from the elastic memory as per the read pulses to generate the radio frame data. 8ecause the control operations involved are performed in accordance with the frame posi- tion pulses, the input frame data matches the radio frame data in terms of frame phase.
Suzuki Eiji
Suzuki Kazuhiro
Fetherstonhaugh & Co.
Fujitsu Limited
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