Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Patent
1995-07-26
1997-08-12
Chin, Wellington
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
370506, 375354, 375371, H04J 306, H04J 316, H04J 312
Patent
active
056573189
ABSTRACT:
A phase-comparison bit synchronizing circuit for establishing bit phase synchronization of signals transmitted by way of TDMA can reproduce data properly even in the presence of disturbance. A plurality of phase shifting units shift the phase of a given burst signal in a received frame, and a bit phase synchronizing unit synchronizes the bit phases of output signals from the phase shifting units. A determining unit determines an optimum one of the phase shifting units, and a first selecting/outputting unit selects and outputs a signal which is produced when the given burst signal is shifted in phase by the optimum phase shifting unit. A memory unit stores the identification code of the phase shifting unit which is determined by the determining unit. A second selecting/outputting unit selects a signal produced when a burst signal in a next or succeeding received frame which corresponds to the given burst signal is shifted by the phase shifting unit whose identification code has been stored by the memory unit, and synchronized in bit phase by the bit phase synchronizing unit, and outputs the selected signal as bit reproduced data.
REFERENCES:
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patent: 5148430 (1992-09-01), Kuranaga et al.
patent: 5177740 (1993-01-01), Toy et al.
patent: 5258980 (1993-11-01), Maebara et al.
patent: 5259004 (1993-11-01), Nakayama
patent: 5452305 (1995-09-01), Nagatake et al.
Ishii Yoshinori
Ohmori Hisakazu
Carman Melissa Kay
Chin Wellington
Fujitsu Limited
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