FI854644A - Analysanordning foer en impulsvis upptraedande tonsignal. - Google Patents
Analysanordning foer en impulsvis upptraedande tonsignal. Download PDFInfo
- Publication number
- FI854644A FI854644A FI854644A FI854644A FI854644A FI 854644 A FI854644 A FI 854644A FI 854644 A FI854644 A FI 854644A FI 854644 A FI854644 A FI 854644A FI 854644 A FI854644 A FI 854644A
- Authority
- FI
- Finland
- Prior art keywords
- upptraedande
- impulsis
- tonsignal
- foer
- analysis
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Selective Calling Equipment (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5725/84A CH672968A5 (fi) | 1984-11-30 | 1984-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI854644A0 FI854644A0 (fi) | 1985-11-25 |
FI854644A true FI854644A (fi) | 1986-05-31 |
Family
ID=4298317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI854644A FI854644A (fi) | 1984-11-30 | 1985-11-25 | Analysanordning foer en impulsvis upptraedande tonsignal. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0184984A1 (fi) |
CH (1) | CH672968A5 (fi) |
ES (1) | ES8705155A1 (fi) |
FI (1) | FI854644A (fi) |
NO (1) | NO854745L (fi) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1072242B (it) * | 1976-12-17 | 1985-04-10 | Cselt Centro Studi Lab Telecom | Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica |
US4354248A (en) * | 1979-11-28 | 1982-10-12 | Motorola, Inc. | Programmable multifrequency tone receiver |
IT1148885B (it) * | 1980-07-09 | 1986-12-03 | Sits Soc It Telecom Siemens | Unita' di controllo della segnalazione di tipo multifrequenza,di particolare applicazione nelle centrali telefonichedi transito di tipo numerico |
-
1984
- 1984-11-30 CH CH5725/84A patent/CH672968A5/de not_active IP Right Cessation
-
1985
- 1985-11-06 EP EP85810517A patent/EP0184984A1/de not_active Ceased
- 1985-11-25 FI FI854644A patent/FI854644A/fi not_active Application Discontinuation
- 1985-11-27 NO NO854745A patent/NO854745L/no unknown
- 1985-11-29 ES ES549453A patent/ES8705155A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES8705155A1 (es) | 1987-04-16 |
EP0184984A1 (de) | 1986-06-18 |
CH672968A5 (fi) | 1990-01-15 |
FI854644A0 (fi) | 1985-11-25 |
ES549453A0 (es) | 1987-04-16 |
NO854745L (no) | 1986-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA | Application withdrawn |
Owner name: AUTOPHON A.G. |