FR2066046A5 - - Google Patents

Info

Publication number
FR2066046A5
FR2066046A5 FR7037339A FR7037339A FR2066046A5 FR 2066046 A5 FR2066046 A5 FR 2066046A5 FR 7037339 A FR7037339 A FR 7037339A FR 7037339 A FR7037339 A FR 7037339A FR 2066046 A5 FR2066046 A5 FR 2066046A5
Authority
FR
France
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
FR7037339A
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.)
Wandel and Golterman GmbH and Co
Original Assignee
Wandel and Golterman GmbH and Co
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 Wandel and Golterman GmbH and Co filed Critical Wandel and Golterman GmbH and Co
Application granted granted Critical
Publication of FR2066046A5 publication Critical patent/FR2066046A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye
    • 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
    • H03K5/26—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 the characteristic being duration, interval, position, frequency, or sequence

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
FR7037339A 1969-10-08 1970-10-07 Expired FR2066046A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1950684A DE1950684C3 (de) 1969-10-08 1969-10-08 Schaltungsanordnung für den Vergleich zweier Frequenzen

Publications (1)

Publication Number Publication Date
FR2066046A5 true FR2066046A5 (fr) 1971-08-06

Family

ID=5747626

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7037339A Expired FR2066046A5 (fr) 1969-10-08 1970-10-07

Country Status (4)

Country Link
US (1) US3696293A (fr)
DE (1) DE1950684C3 (fr)
FR (1) FR2066046A5 (fr)
GB (1) GB1326953A (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766818A (en) * 1972-05-01 1973-10-23 L Prohofsky Electronic frequency measuring apparatus
GB1464365A (en) * 1973-05-11 1977-02-09 Ferranti Ltd Frequency ratio indicating circuit arrangements
US3861266A (en) * 1973-05-29 1975-01-21 Ranald Otis Whitaker Musical tuning instrument utilizing digital techniques
US3968719A (en) * 1973-09-24 1976-07-13 Inventronics, Inc. Method for tuning musical instruments
US4014242A (en) * 1973-09-24 1977-03-29 Inventronics, Inc. Apparatus for use in the tuning of musical instruments
US3982184A (en) * 1973-09-24 1976-09-21 Inventronics, Inc. Phase different detector and display
US3901120A (en) * 1973-10-11 1975-08-26 John S Youngquist Electronic tuning device for musical instruments
JPS5634048B2 (fr) * 1974-05-24 1981-08-07
US4196652A (en) * 1974-08-19 1980-04-08 Jef Raskin Digital electronic tuner
JPS5616886B2 (fr) * 1974-12-30 1981-04-18
US3990006A (en) * 1975-01-08 1976-11-02 Bell Telephone Laboratories, Incorporated Digital tone detector using concatenated detection intervals
DE3020463C2 (de) * 1980-05-29 1989-08-10 Siemens AG, 1000 Berlin und 8000 München Setzbarer Pseudozufallsgenerator
DE3020481C2 (de) * 1980-05-29 1988-10-20 Siemens AG, 1000 Berlin und 8000 München Setzbarer Pseudozufallsgenerator
DE3040198A1 (de) * 1980-10-24 1982-05-13 Siemens AG, 1000 Berlin und 8000 München Einrichtung zum erkennen der frequenzdrift einer schwingschaltung
DE3171427D1 (en) * 1981-11-19 1985-08-22 Itt Ind Gmbh Deutsche Digital circuit delivering a binary signal whenever the frequency ration of the line/and the field frequency occurs
JPS58173471A (ja) * 1982-04-05 1983-10-12 Mitsubishi Electric Corp 周波数判別装置
GB2133560B (en) * 1983-01-05 1987-01-14 Mitsubishi Electric Corp Circuit for monitoring the frequency of signal for controlling choppers of electric cars
US4692710A (en) * 1985-09-04 1987-09-08 Electronic Design & Research, Inc. Fundamental and harmonic pulse-width discriminator
US5802647A (en) * 1995-06-07 1998-09-08 Helmsderfer; John A. Baby diaper changing station
US6627806B1 (en) 2000-04-12 2003-09-30 David J. Carpenter Note detection system and methods of using same
US6613971B1 (en) 2000-04-12 2003-09-02 David J. Carpenter Electronic tuning system and methods of using same
US6529843B1 (en) 2000-04-12 2003-03-04 David J. Carpenter Beat rate tuning system and methods of using same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354398A (en) * 1965-06-07 1967-11-21 Collins Radio Co Digital frequency comparator
FR1554371A (fr) * 1967-03-29 1969-01-17

Also Published As

Publication number Publication date
US3696293A (en) 1972-10-03
DE1950684C3 (de) 1975-04-30
DE1950684B2 (fr) 1974-08-29
DE1950684A1 (de) 1971-04-22
GB1326953A (en) 1973-08-15

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Legal Events

Date Code Title Description
ST Notification of lapse