Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1990-03-30
1991-10-15
Chin, Stephen
Pulse or digital communications
Spread spectrum
Direct sequence
307510, H04L 700
Patent
active
050581422
ABSTRACT:
A clock extractor which generates a clock signal for sampling of a data of a data signal received from a digital line on the basis of a separation clock having a period corresponding to a data communication rate of a data to be separated from the received data signal. The clock extractor always generates a plurality of clock signals which have respectively an identical period corresponding to a data communication rate of the received data signal and which phases are slightly shifted mutually, and each time selects one of the plurality of clock signals as a clock signal for sampling of the received data signal. In the selecting operation of the clock extractor, a change in the logical level of the separation clock to a specific level is detected with resolution power corresponding to the slightly mutually shifted phases of the plurality of clock signals, and any one of the plurality of clock signals is specified according to the detection timing. The clock signal thus specified can be used to most faithfully reproduce the phase of the separation clock and the continuity of the separation clock as a clock signal.
REFERENCES:
patent: 4573173 (1986-02-01), Yoshida
patent: 4821297 (1989-04-01), Bergmann et al.
Chin Stephen
Kabushiki Kaisha Toshiba
LandOfFree
Clock extracting circuit in digital-line signal receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clock extracting circuit in digital-line signal receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock extracting circuit in digital-line signal receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-997181