Coded data generation or conversion – Digital code to digital code converters – To or from nrz codes
Patent
1998-09-23
2000-08-01
Phan, Trong
Coded data generation or conversion
Digital code to digital code converters
To or from nrz codes
341 94, 341 71, H03H 712, H03H 1300
Patent
active
060973226
ABSTRACT:
A device including a mechanism (4) for generating a counting clock signal (CKM) whose frequency is less than or equal to n times twice the transmission frequency. The device also includes a detection mechanism (10) for detecting the transitions (TD) of the signal (DS) at the counting frequency and for delivering corresponding detection signals (ST), a selection mechanism (2) for receiving each detection signal (ST) and for delivering or otherwise a selection signal (RS) depending on the satisfying or otherwise of a predetermined selection criterion, and a frequency divider-by-n (30) which receives the counting clock signal, in order to sample the carrier signal after a predetermined time delay (Tr) after each detected transition. Provided are a sampling control device and method which are completely digital and therefore use no analog component of the phase-locked loop type and are very simple to produce at an industrially economical cost.
REFERENCES:
patent: 5491713 (1996-02-01), Kwok et al.
Preliminary European Search Report dated Jul. 3, 1998 with annex on French Application No. 97 11864.
Galanthay Theodore E.
Phan Trong
STMicroelectronics S.A.
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