Pulse or digital communications – Receivers
Reexamination Certificate
2005-09-20
2005-09-20
Chin, Stephen (Department: 2634)
Pulse or digital communications
Receivers
C327S165000, C370S395620, C375S376000, C375S372000, C398S036000, C398S155000, C398S175000
Reexamination Certificate
active
06947494
ABSTRACT:
A bit rate control apparatus having a delay unit for delaying an input signal received in an optical receiver in an optoelectrically-converted state; a DC level outputting unit for exclusively OR'ing the input signal with the delayed signal outputted from the delay unit; an A/D converting unit for A/D converting a DC level outputted from the DC level outputting unit; a clock/data reproducing unit for reproducing clocks and data based on a bit rate control signal; and a control unit for calculating a variation in the DC level at every interruption timing, which is previously set, based on the A/D converted signal, and for determining whether the DC level variation occurs under the influence of temperature or due to a variation in bit rate based on a difference between the calculated DC level variation from a predetermined variation limit.
REFERENCES:
patent: 5138633 (1992-08-01), Cortese
patent: 5631925 (1997-05-01), Koenzen
patent: 6580263 (2003-06-01), Choi et al.
patent: 2002/0021767 (2002-02-01), Greiss et al.
patent: 2002/0039040 (2002-04-01), Kim et al.
patent: 2004/0096013 (2004-05-01), Laturell et al.
patent: 0 342 010 (1989-11-01), None
patent: 0 580 317 (1994-01-01), None
patent: 0 878 926 (1998-11-01), None
patent: 0 910 192 (1999-04-01), None
Jae Ho Song et al., “Design and Characterization of a 10 Gb/s Clock and Data Recovery Circuit Implemented with Phase-Locked Loop”, ETRI Journal, vol. 21, No. 3, Sep. 1999, pp. 1-5.
Choi Jeong-Seok
Kim Chan-Youl
Oh Yun-Je
Park Tae-Sung
Cha & Reiter L.L.C.
Chin Stephen
File Erin M.
LandOfFree
Bit rate control apparatus and method of optical 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 Bit rate control apparatus and method of optical receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bit rate control apparatus and method of optical receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3391532