BE466622A - - Google Patents
Info
- Publication number
- BE466622A BE466622A BE466622DA BE466622A BE 466622 A BE466622 A BE 466622A BE 466622D A BE466622D A BE 466622DA BE 466622 A BE466622 A BE 466622A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/16—Monitoring arrangements
-
- 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
-
- 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
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB696/43A GB562870A (en) | 1943-01-14 | 1943-01-14 | Improvements in telephone or like systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE466622A true BE466622A (it) |
Family
ID=9708927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE466622D BE466622A (it) | 1943-01-14 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2380232A (it) |
| BE (1) | BE466622A (it) |
| FR (1) | FR930147A (it) |
| GB (1) | GB562870A (it) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE454346A (it) * | 1943-03-08 | |||
| FR952401A (fr) * | 1943-04-22 | 1949-11-16 | Telecommunications Sa | Dispositif pour la transmission de signaux d'appel et de fin de conversation sur les circuits téléphoniques à longue distance |
| US2566700A (en) * | 1946-10-30 | 1951-09-04 | Rca Corp | Stereoscopic and stereosonic television system |
| BE521897A (it) * | 1952-08-03 | |||
| US2972019A (en) * | 1956-10-04 | 1961-02-14 | Gen Dynamics Corp | Automatic telephony ringing circuit |
| US3036163A (en) * | 1959-05-15 | 1962-05-22 | Bell Telephone Labor Inc | Signaling system |
| US4517223A (en) * | 1982-09-24 | 1985-05-14 | Sovonics Solar Systems | Method of making amorphous semiconductor alloys and devices using microwave energy |
-
0
- BE BE466622D patent/BE466622A/xx unknown
-
1943
- 1943-01-14 GB GB696/43A patent/GB562870A/en not_active Expired
- 1943-12-18 US US514810A patent/US2380232A/en not_active Expired - Lifetime
-
1946
- 1946-07-02 FR FR930147D patent/FR930147A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB562870A (en) | 1944-07-19 |
| FR930147A (fr) | 1948-01-16 |
| US2380232A (en) | 1945-07-10 |