FR2417115B1 - - Google Patents
Info
- Publication number
- FR2417115B1 FR2417115B1 FR7903323A FR7903323A FR2417115B1 FR 2417115 B1 FR2417115 B1 FR 2417115B1 FR 7903323 A FR7903323 A FR 7903323A FR 7903323 A FR7903323 A FR 7903323A FR 2417115 B1 FR2417115 B1 FR 2417115B1
- 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
Links
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/14—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by heterodyning; by beat-frequency comparison
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Measuring Phase Differences (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2600021 | 1978-02-10 | ||
| SU782578262A SU809521A1 (ru) | 1978-02-10 | 1978-02-10 | Устройство дл формировани импульсовРАзНОСТНОй чАСТОТы |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2417115A1 FR2417115A1 (fr) | 1979-09-07 |
| FR2417115B1 true FR2417115B1 (US07655688-20100202-C00086.png) | 1982-11-12 |
Family
ID=26665655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7903323A Granted FR2417115A1 (fr) | 1978-02-10 | 1979-02-09 | Procede pour isoler la frequence differentielle de deux trains d'impulsions et dispositif pour sa mise en oeuvre |
Country Status (5)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4683437A (en) * | 1986-06-06 | 1987-07-28 | Motorola, Inc. | Frequency subtractor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3354398A (en) * | 1965-06-07 | 1967-11-21 | Collins Radio Co | Digital frequency comparator |
| US3501701A (en) * | 1967-06-19 | 1970-03-17 | Nasa | Digital frequency discriminator |
| US3526841A (en) * | 1967-10-30 | 1970-09-01 | Itt | Detector for harmonically related signals |
| US3588710A (en) * | 1968-08-05 | 1971-06-28 | Westinghouse Electric Corp | Digital phase detection circuitry |
| DE2205557A1 (de) * | 1972-02-05 | 1973-08-09 | Siemens Ag | Verfahren zur differenzbildung zweier impulsfolgen und schaltungsanordnung zur durchfuehrung des verfahrens |
| US3961203A (en) * | 1975-01-09 | 1976-06-01 | Honeywell Inc. | Signal correlator |
| DE2605380C3 (de) * | 1976-02-11 | 1979-01-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung zum Erzeugen einer Rechteckschwingung aus der Mischung zweier Rechteckschwingungen miteinander |
-
1979
- 1979-01-29 US US06/007,511 patent/US4286220A/en not_active Expired - Lifetime
- 1979-02-08 CA CA000321232A patent/CA1134444A/en not_active Expired
- 1979-02-08 DE DE2904815A patent/DE2904815C2/de not_active Expired
- 1979-02-09 FR FR7903323A patent/FR2417115A1/fr active Granted
- 1979-02-09 JP JP1342979A patent/JPS54130072A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2417115A1 (fr) | 1979-09-07 |
| DE2904815C2 (de) | 1982-12-16 |
| DE2904815A1 (de) | 1979-08-16 |
| CA1134444A (en) | 1982-10-26 |
| JPS54130072A (en) | 1979-10-09 |
| JPS5760578B2 (US07655688-20100202-C00086.png) | 1982-12-20 |
| US4286220A (en) | 1981-08-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |