Pulse or digital communications – Synchronizers – Synchronizing the sampling time of digital data
Reexamination Certificate
2007-03-13
2007-03-13
Ha, Dac V. (Department: 2611)
Pulse or digital communications
Synchronizers
Synchronizing the sampling time of digital data
C341S013000, C341S123000, C341S126000, C341S155000
Reexamination Certificate
active
10434840
ABSTRACT:
The scale and complexity of an apparatus is reduced by omitting a clock extraction section. The apparatus includes: a sampling pulse train generation device which generates an optical or electrical sampling pulse train, independently of an input optical or electrical data signal with a bit rate f0(bit/s), and which has a repetition frequency f1(Hz); a data signal sampling device which samples the data signal in accordance with the sampling pulse train to obtain a sampled signal; a voltage retaining device which converts the sampled signal, and stores pieces of electrical digital data; an electrical signal processing device which reads the digital data at once or sequentially to obtain a signal eye-diagram and evaluates optical data signal quality parameters; and a trigger signal generation device which applies triggers indicating the start/finish of data acquisition and data read to the voltage retaining device and the electrical signal processing device, respectively.
REFERENCES:
patent: 4376309 (1983-03-01), Fenderson et al.
patent: 4941151 (1990-07-01), Abbiate et al.
patent: 5959563 (1999-09-01), Ring
patent: 6366374 (2002-04-01), Bradshaw et al.
patent: 6587530 (2003-07-01), Conklin et al.
patent: 6593871 (2003-07-01), Miethig et al.
patent: 0884868 (1998-12-01), None
patent: 0920150 (1999-06-01), None
patent: 01-217220 (1989-08-01), None
patent: 05-142095 (1993-06-01), None
patent: 06-237231 (1994-08-01), None
patent: 09/160082 (1997-06-01), None
“100 Gbit/s optical signal eye-diagram measurement with optical sampling using organic nonlinear optical crystal”, H. Takara, et al., Electronics Letters, vol. 32, No. 24, Nov. 21, 1996, pp. 2256-2258.
“Optical signal quality monitoring method based on optical sampling”, I. Shake, et al., Electronics Letters, vol. 34, No. 22, Oct. 29, 1998, pp. 2152-2154.
“Handbok of Electronic Test Equipment (Section 5-8. Sampling Oscilloscope)”, John D. Lenk, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1971, pp. 184-189 plus 2 cover pages.
“Modeling of the HP-1430A Feedthrough Wide-Band (28-ps) Sampling Head” Sedki M. Riad, IEEE Transactions on Instrumentation and Measurement, vol. IM-31, No. 2, Jun. 1982, pp. 110-115.
Shake Ippei
Takara Hidehiko
Ha Dac V.
Harness Dickey & Pierce PLC
Nippon Telegraph and Telephone Corporation
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