Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1988-12-19
1990-03-27
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307519, 307517, 377 41, 377 42, G01R 2306
Patent
active
049124196
ABSTRACT:
An apparatus and method for detecting the period of a frequency signal having a period greater than a minimum period and within a period range. A clock frequency is generated such that when multiplied by the predetermined range the product is less than 2.sup.N and when multiplied by the minimum period of the product is less than 2.sup.N+M. The resulting clock frequency is multiplied by the minimum period to generate an offset number. A counter is preset with the offset number in response to a detected edge transition of the frequency signal. The counter counts at the clock frequency from a complement of the offset number to a final count at a subsequent edge transition. The final count is contained within the first N bits and is related to the period of the frequency signal.
REFERENCES:
patent: 2986698 (1961-05-01), Burklund
patent: 2989701 (1961-06-01), Gill
patent: 3068406 (1962-12-01), Dellinger
patent: 3535658 (1970-10-01), Webb
patent: 3551651 (1970-12-01), Offereins
patent: 3944935 (1976-03-01), Plant
patent: 4085373 (1978-04-01), McConnell
patent: 4197508 (1980-04-01), Takaoka
patent: 4215315 (1980-07-01), Lambert et al.
patent: 4322642 (1982-03-01), Sugasawa
patent: 4816704 (1989-03-01), Fiori
patent: 4823060 (1989-04-01), Doemen
Institution of Electrical Engineers Paper Entitled "Rapid--Response Frequency Measurement Using Analogue Period Process", vol. 11, No. 16, pp. 383-384, 8/7/75.
Abolins Peter
Ford Motor Company
Heyman John S.
Lippa Allan J.
LandOfFree
Signal conditioning circuit and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal conditioning circuit and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal conditioning circuit and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1653569