Coded data generation or conversion – Sample and hold – Having variable sampling rate
Patent
1998-03-11
2000-11-14
Tokar, Michael
Coded data generation or conversion
Sample and hold
Having variable sampling rate
331 16, 331 74, H03M 100, H03L 700, H03B 100
Patent
active
061476323
ABSTRACT:
The invention provides a sampling frequency conversion apparatus which converts a sampling frequency to another frequency using another oscillator employed in the system as the source oscillator. A fractional frequency divider divides an output of the source oscillator by a non-integer. By using outputs of the source oscillator and the divider individually as sampling clocks, an input signal is first sampled by a first sampling circuit and then an output of the first sampling circuit is sampled again by a second sampling circuit to convert the sampling frequency. The fractional frequency divider divides the clock signal of a higher one of the frequencies to produce the clock signal of a lower one of the frequencies, and the dividing ratio of the fractional frequency divider for the production of the clock signal is varied periodically to effect division of a frequency ratio having a fractional value when averaged over a time period.
REFERENCES:
patent: 4656649 (1987-04-01), Takahasi
patent: 5485152 (1996-01-01), Wilson et al.
patent: 5513209 (1996-04-01), Holm
Japanese Office Action issued 4/5/00 in a related application with English translation of relevant portions.
Submitted herewith is a copy of art together with an art listing form listing the same for the convenience of the Examiner.
The Japanese Publication(s) listed on the attached art listing form was/were cited in a Japanese Office Action issued in a related application. A copy of the Japanese Office Action and an English-language translation of the relevant portions are also attached.
This submission is being made after the issuance of a first Office Action and three months after the application filing date. Thus a Certification Under 37 C.F.R. .sctn.1.97(e) is set forth below.
I hereby certify that each item of information contained in this Submission was cited in a communication from a foreign patent office in a counterpart foreign application not more than three (3) months prior to the filing of this Submission (37 C.F.R. .sctn.1.97(e)).
This submission is being made after the issuance of the first Office Action and without a certification. The fee of $240.00 under 37 C.F.R. .sctn.1.17(p) is attached.
This submission is being made after the issuance of a final rejection or a Notice of Allowance but prior to the payment of the issue fee. Applicant(s) hereby Petition for consideration of this Information Disclosure Statement and attach the fee of $130.00 under 37 C.F.R. .sctn.1.17(I). A certification under 37 C.F.R. .sctn.1.97(e) is set forth above.
NEC Corporation
Tokar Michael
Wamsley Patrick
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