Digital transmission system

Details Digital transmission system Digital transmission system

2002-12-03

2008-09-09

Chan, Jason (Department: 2613)

Optical communications

Receiver

C375S317000, C714S709000

Reexamination Certificate

active

07424230

ABSTRACT:
This digital transmission system is provided with a transmitting apparatus that transmits digital data signals and a receiving apparatus that receives the digital data signals transmitted over a transmission path, compares the signals with a predetermined threshold value, and performs decision reproduction. The receiving apparatus is formed by: decision circuits that receive the input of reception signals, discriminate between the respective reception signals using a plurality of threshold values, and output decision results; and a selection circuit that, based on the decision results output from the decision circuit, selects one decision result from one threshold value from among the decision results from each of the plurality of threshold values, and outputs the selected decision result. As a result, the receiving apparatus is able to individually select which decision result to use from which threshold value.

REFERENCES:
patent: 5652767 (1997-07-01), Kiyonaga et al.
patent: 6477279 (2002-11-01), Go
patent: 6546057 (2003-04-01), Yeap
patent: 6760552 (2004-07-01), Tajima et al.
patent: 6847789 (2005-01-01), Savoj
patent: 2001/0015845 (2001-08-01), Ito et al.
patent: 2004/0165895 (2004-08-01), Taga et al.
patent: 0455910 (1991-11-01), None
patent: 0912020 (1999-04-01), None
patent: WO 00/51271 (2000-08-01), None
“Adaptive Decision Feedback Equalizer For 10 GBIT/S Dispersion Mitigation”, F. Buchali, H. Buelow, W. Kuebart, ECOC 2000, Sep. 3-7, 2000, Munich, Germany, pp. 101-102.
“FEC Techniques in Submarine Transmission Systems”, Omar AIT SAB, OFC 2001, TuF1, Mar. 2001.
“Error Correction Without Additional Redundancy By Novel Optical Receiver With Diverse Detection”, Masahito Tomizawa, Yoshiaki Kisaka, Akira Hirano, and Yutaka Miyamoto, OFC 2002, WX7, pp. 368-370, Mar. 17-22, 2002.
“PMD Mitigation by Frequency Diverse Detection Receiver Employing Error-Correction Function”, Masahito Tomizawa, Yoshiaka Kisaka, Akira Hirano, and Yutaka Miyamoto, ECOC 2002, 7.1.4, Sep. 8-12, 2002.
European Search Report EP 02 29 2977 dated Feb. 6, 2003, along with date-stamped cover letter from Shiga Patent Office dated Mar. 3, 2003.

Affiliated with

Also associated with

Rating

Digital transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital transmission system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3967562