Pulse or digital communications – Synchronizers – Self-synchronizing signal
Reexamination Certificate
2005-08-09
2005-08-09
Ha, Dac V. (Department: 2634)
Pulse or digital communications
Synchronizers
Self-synchronizing signal
C375S362000, C375S372000, C370S509000, C710S120000
Reexamination Certificate
active
06928126
ABSTRACT:
A reception interface unit in a transmission system wherein time series data is divided into data groups and a data packet with reproduction specification time data specifying a time at which each data piece in the data groups should be reproduced, added to the data groups is transmitted on a transmission bus in a time division manner. The interface unit has a cycle timer for counting the reference time of the home device based on the reference time on the transmission bus, a unit for extracting the reproduction specification time data in the data groups from a signal received via the transmission bus and storing the reproduction specification time data in a buffer, a reception buffer for inputting and storing the data pieces in the data groups in order and reading out the data pieces in the storage order responsive to a reproduction clock, a match detector for generating a reference clock pulse if the reference time of the home device matches the reproduction specification time, and a PLL circuit being responsive to the reference clock pulse for generating a clock signal which is phase synchronized with the reference clock pulse as the reproduction clock. When the reference time on the transmission bus changes, the data stored in the buffer in the reproduction specification time data extraction unit and the data stored in the reception buffer are all deleted.
REFERENCES:
patent: 5703877 (1997-12-01), Nuber et al.
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patent: 6069902 (2000-05-01), Kurano et al.
patent: 6078594 (2000-06-01), Anderson et al.
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IEEE Standard for High Performance Serial Bus, Aug. 30, 1996.
Hasebe Seiichi
Matsumaru Makoto
Minoshima Kunihiro
Murakoshi Sho
Ono Kinya
Ha Dac V.
Pioneer Electronic Corporation
Sughrue & Mion, PLLC
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