Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1989-10-31
1991-10-01
Safourek, Benedict V.
Pulse or digital communications
Spread spectrum
Direct sequence
307595, 328155, H03K 5159
Patent
active
050540386
ABSTRACT:
The invention relates to a method and apparatus for restoring at least one data signal with the aid of a clock signal. In the method at least two signal delays are arranged with time delays adjustable in steps such that their time steps are given substantially the same responsiveness to at least one ambience factor, e.g. temperature. The first signal is delayed with the aid of a first signal delay. A first restored data signal is created by sensing the delayed first signal at given times determined by the clock signal. The results of sensing at different times are compared and the delay of the first signal delay is varied stepwise by varying the number of time steps in response to the comparison. A second signal delay is used for relating a plurality of time steps to the clock signal period time. The magnitude of time steps in both the first and second signal delay is controlled synchronously in response to the relating process so that the magnitude of a time step is in a given relationship to the clock signal period time. An apparatus in accordance with the invention includes, apart from the signal delays, first and second sensing, comparison and control elements connected to the signal delays.
REFERENCES:
patent: 4190807 (1980-02-01), Weber
patent: 4626716 (1986-12-01), Miki
patent: 4695805 (1987-09-01), Massingill et al.
patent: 4755704 (1988-07-01), Flora et al.
patent: 4829258 (1989-05-01), Volk et al.
patent: 4922141 (1990-05-01), Lofgren et al.
Safourek Benedict V.
Telefonaktiebolaget L M Ericsson
LandOfFree
Method and apparatus for restoring data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for restoring data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for restoring data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1760821