NL6615479A - - Google Patents
Info
- Publication number
- NL6615479A NL6615479A NL6615479A NL6615479A NL6615479A NL 6615479 A NL6615479 A NL 6615479A NL 6615479 A NL6615479 A NL 6615479A NL 6615479 A NL6615479 A NL 6615479A NL 6615479 A NL6615479 A NL 6615479A
- Authority
- NL
- Netherlands
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
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
- H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB46285/65A GB1066909A (en) | 1965-11-02 | 1965-11-02 | Improvements in or relating to electrical signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6615479A true NL6615479A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-05-03 |
Family
ID=10440614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6615479A NL6615479A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1965-11-02 | 1966-11-02 |
Country Status (5)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763322A (en) * | 1971-10-01 | 1973-10-02 | Integrated Systems Technology | Digital-to-tone converter utilizing a relaxation oscillator |
| US4577333A (en) * | 1984-09-13 | 1986-03-18 | Gridcomm Inc. | Composite shift keying communication system |
| GB2173675A (en) * | 1985-03-22 | 1986-10-15 | Steven Henry Lerman | Communication system |
| GB2461890B (en) † | 2008-07-16 | 2011-03-02 | Tunstall Group Ltd | Tone signalling |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2947814A (en) * | 1957-12-27 | 1960-08-02 | Gen Railway Signal Co | Carrier transmitter |
| US3121197A (en) * | 1960-03-08 | 1964-02-11 | Bell Telephone Labor Inc | Voice-frequency binary data transmission system with return signal |
| US3268862A (en) * | 1961-10-02 | 1966-08-23 | Gen Signal Corp | Code communication system |
| GB1026161A (en) * | 1962-01-03 | 1966-04-14 | Plessey Co Ltd | Improvements in or relating to frequency-shift digital transmission systems |
| US3261922A (en) * | 1962-12-28 | 1966-07-19 | Bell Telephone Labor Inc | Fdm data trunking system having a common tdm supervisory channel |
-
1965
- 1965-11-02 GB GB46285/65A patent/GB1066909A/en not_active Expired
-
1966
- 1966-10-27 US US589947A patent/US3510592A/en not_active Expired - Lifetime
- 1966-10-28 DE DE19661487640 patent/DE1487640A1/de active Pending
- 1966-11-02 NL NL6615479A patent/NL6615479A/xx unknown
- 1966-11-02 FR FR82179A patent/FR1502996A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1066909A (en) | 1967-04-26 |
| FR1502996A (fr) | 1967-11-24 |
| DE1487640A1 (de) | 1969-01-09 |
| US3510592A (en) | 1970-05-05 |