FR83974E - Récepteur à fréquences vocales - Google Patents
Récepteur à fréquences vocalesInfo
- Publication number
- FR83974E FR83974E FR940522A FR940522A FR83974E FR 83974 E FR83974 E FR 83974E FR 940522 A FR940522 A FR 940522A FR 940522 A FR940522 A FR 940522A FR 83974 E FR83974 E FR 83974E
- Authority
- FR
- France
- Prior art keywords
- frequency receiver
- voice frequency
- voice
- receiver
- 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
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)
- Selective Calling Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE634529D BE634529A (fr) | 1963-07-05 | ||
NL294970D NL294970A (fr) | 1963-07-05 | ||
DEST19452A DE1196249B (de) | 1963-07-05 | 1962-07-06 | Schaltungsanordnung zum Auswerten von Kombinationssignalen |
US291912A US3299216A (en) | 1962-07-06 | 1963-07-01 | Signal evaluation circuits |
FR940522A FR83974E (fr) | 1963-07-05 | 1963-07-05 | Récepteur à fréquences vocales |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR940522A FR83974E (fr) | 1963-07-05 | 1963-07-05 | Récepteur à fréquences vocales |
Publications (1)
Publication Number | Publication Date |
---|---|
FR83974E true FR83974E (fr) | 1964-11-06 |
Family
ID=8807676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR940522A Expired FR83974E (fr) | 1962-07-06 | 1963-07-05 | Récepteur à fréquences vocales |
Country Status (5)
Country | Link |
---|---|
US (1) | US3299216A (fr) |
BE (1) | BE634529A (fr) |
DE (1) | DE1196249B (fr) |
FR (1) | FR83974E (fr) |
NL (1) | NL294970A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1537837B1 (de) * | 1967-09-28 | 1970-11-12 | Siemens Ag | Schaltungsanordnung fuer frequenzselektive Waehlkennzeichenempfaenger in Fernmelde-,insbesondere Fernsprechanlagen |
DE2334426A1 (de) * | 1973-07-06 | 1975-01-23 | Telefonbau & Normalzeit Gmbh | Auswerter fuer sprachgeschuetzte frequenzselektive zeichenempfaenger nach dem mehrfrequenzverfahren |
JPS5242308A (en) * | 1975-10-01 | 1977-04-01 | Iwatsu Electric Co Ltd | Multiplex frequency signal receiver |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL267564A (fr) * | 1960-08-22 |
-
0
- BE BE634529D patent/BE634529A/de unknown
- NL NL294970D patent/NL294970A/xx unknown
-
1962
- 1962-07-06 DE DEST19452A patent/DE1196249B/de active Pending
-
1963
- 1963-07-01 US US291912A patent/US3299216A/en not_active Expired - Lifetime
- 1963-07-05 FR FR940522A patent/FR83974E/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE634529A (fr) | |
DE1196249B (de) | 1965-07-08 |
US3299216A (en) | 1967-01-17 |
NL294970A (fr) |
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