CA964730A - Digital frequency comparator - Google Patents

Digital frequency comparator

Info

Publication number
CA964730A
CA964730A CA151,922A CA151922A CA964730A CA 964730 A CA964730 A CA 964730A CA 151922 A CA151922 A CA 151922A CA 964730 A CA964730 A CA 964730A
Authority
CA
Canada
Prior art keywords
digital frequency
frequency comparator
comparator
digital
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA151,922A
Other versions
CA151922S (en
Inventor
David A. Pezzutti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA964730A publication Critical patent/CA964730A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)
CA151,922A 1972-03-09 1972-09-18 Digital frequency comparator Expired CA964730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23308572A 1972-03-09 1972-03-09

Publications (1)

Publication Number Publication Date
CA964730A true CA964730A (en) 1975-03-18

Family

ID=22875826

Family Applications (1)

Application Number Title Priority Date Filing Date
CA151,922A Expired CA964730A (en) 1972-03-09 1972-09-18 Digital frequency comparator

Country Status (2)

Country Link
US (1) US3753130A (en)
CA (1) CA964730A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885228A (en) * 1973-06-05 1975-05-20 Martin J Katz Fail-safe electronic encoder for selectively operating railway signal indicator
JPS5114521U (en) * 1974-07-19 1976-02-02
JPS5181168A (en) * 1975-01-14 1976-07-15 Nissan Motor SHUHASUKEN SHUTSUKAIRO
JPS51158274U (en) * 1975-06-09 1976-12-16
DE2529146C3 (en) * 1975-06-30 1978-08-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and arrangement for preventing winding or unwinding or reversing commands for a winding motor in a tape device, the speed of which is below a certain value
JPS557897Y2 (en) * 1975-07-23 1980-02-21
SE396524B (en) * 1976-01-23 1977-09-19 Ericsson Telefon Ab L M DEVICE FOR INDICATING SIGNALS WITH A LENGTH OVER A LIMIT VALUE
JPS5838750B2 (en) * 1978-05-23 1983-08-25 富士通株式会社 Period comparison circuit
US4410817A (en) * 1980-05-27 1983-10-18 Sperry Corporation Precision time duration detector
US4403185A (en) * 1982-06-09 1983-09-06 Baxter Travenol Laboratories, Inc. Process and device for detecting frequency variations
JPS59122159A (en) * 1982-12-28 1984-07-14 Nitsuko Ltd Discriminating circuit of incoming signal
US4539523A (en) * 1983-06-06 1985-09-03 Combustion Engineering, Inc. Frequency to voltage converter for a predetermined frequency range
JPS603561A (en) * 1983-06-20 1985-01-09 Nissan Motor Co Ltd Frequency discriminating circuit
JP2861465B2 (en) * 1991-05-16 1999-02-24 日本電気株式会社 Frequency multiplier
US5546025A (en) * 1994-03-11 1996-08-13 Mitel, Inc. Low frequency discrimator using upper and lower thresholds

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961611A (en) * 1957-01-17 1960-11-22 Epsco Inc Frequency discriminator
NL297106A (en) * 1962-08-27
DE1235993B (en) * 1963-12-28 1967-03-09 Fujitsu Ltd Circuit arrangement for the correction of pulse intervals
US3521174A (en) * 1967-03-23 1970-07-21 Us Navy Frequency sensitive control circuit

Also Published As

Publication number Publication date
US3753130A (en) 1973-08-14

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