SE7708218L - Mottagare for talfrekvenssignaler - Google Patents
Mottagare for talfrekvenssignalerInfo
- Publication number
- SE7708218L SE7708218L SE7708218A SE7708218A SE7708218L SE 7708218 L SE7708218 L SE 7708218L SE 7708218 A SE7708218 A SE 7708218A SE 7708218 A SE7708218 A SE 7708218A SE 7708218 L SE7708218 L SE 7708218L
- Authority
- SE
- Sweden
- Prior art keywords
- receiver
- frequency signals
- number frequency
- signals
- frequency
- 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)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7608047A NL7608047A (nl) | 1976-07-20 | 1976-07-20 | Ontvanginrichting voor toonfrequente tekens. |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7708218L true SE7708218L (sv) | 1978-01-21 |
Family
ID=19826629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7708218A SE7708218L (sv) | 1976-07-20 | 1977-07-15 | Mottagare for talfrekvenssignaler |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5313810A (sv) |
BE (1) | BE856903A (sv) |
BR (1) | BR7704723A (sv) |
DE (1) | DE2730453A1 (sv) |
FR (1) | FR2359561A1 (sv) |
NL (1) | NL7608047A (sv) |
SE (1) | SE7708218L (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4696031A (en) * | 1985-12-31 | 1987-09-22 | Wang Laboratories, Inc. | Signal detection and discrimination using waveform peak factor |
-
1976
- 1976-07-20 NL NL7608047A patent/NL7608047A/xx unknown
-
1977
- 1977-07-06 DE DE19772730453 patent/DE2730453A1/de active Pending
- 1977-07-15 SE SE7708218A patent/SE7708218L/sv not_active Application Discontinuation
- 1977-07-18 BR BR7704723A patent/BR7704723A/pt unknown
- 1977-07-18 BE BE179426A patent/BE856903A/xx unknown
- 1977-07-19 FR FR7722066A patent/FR2359561A1/fr not_active Withdrawn
- 1977-07-20 JP JP8616077A patent/JPS5313810A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2730453A1 (de) | 1978-01-26 |
JPS5313810A (en) | 1978-02-07 |
BE856903A (fr) | 1978-01-18 |
NL7608047A (nl) | 1978-01-24 |
FR2359561A1 (fr) | 1978-02-17 |
BR7704723A (pt) | 1978-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 7608047-2 |