BE739426A - - Google Patents
Info
- Publication number
- BE739426A BE739426A BE739426DA BE739426A BE 739426 A BE739426 A BE 739426A BE 739426D A BE739426D A BE 739426DA BE 739426 A BE739426 A BE 739426A
- Authority
- BE
- Belgium
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
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Telephonic Communication Services (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76307768A | 1968-09-27 | 1968-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE739426A true BE739426A (xx) | 1970-03-02 |
Family
ID=25066824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE739426D BE739426A (xx) | 1968-09-27 | 1969-09-26 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3544724A (xx) |
| JP (1) | JPS5022841B1 (xx) |
| BE (1) | BE739426A (xx) |
| DE (1) | DE1948180B2 (xx) |
| FR (1) | FR2019087A1 (xx) |
| GB (1) | GB1286654A (xx) |
| NL (1) | NL6914338A (xx) |
| SE (1) | SE351101B (xx) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637943A (en) * | 1970-06-24 | 1972-01-25 | Digital Telephone Systems Inc | Telephone-signaling unit |
| GB1372183A (en) * | 1970-08-03 | 1974-10-30 | Aei Telecommunications Canada | Digital impulse corrector |
| US3700821A (en) * | 1970-11-09 | 1972-10-24 | Bell Telephone Labor Inc | Digital constant-percent-break pulse correcting signal timer |
| US3766323A (en) * | 1971-02-24 | 1973-10-16 | Itt | Digital dial pulse distortion corrector |
| US3671875A (en) * | 1971-05-20 | 1972-06-20 | Bell Telephone Labor Inc | Digitally operated signal regenerator and timing circuit |
| US3848094A (en) * | 1972-12-29 | 1974-11-12 | Stromberg Carlson Corp | Telephone battery feed circuit |
| US3988548A (en) * | 1975-12-02 | 1976-10-26 | Gte Automatic Electric Laboratories Incorporated | Dial pulse correction circuit for telephone signaling system |
| JPS5388009U (xx) * | 1976-12-22 | 1978-07-19 | ||
| US4223184A (en) * | 1978-10-24 | 1980-09-16 | Bell Telephone Laboratories, Incorporated | Minimum break/make pulse corrector |
| DE2953227A1 (de) * | 1978-10-24 | 1980-11-27 | Western Electric Co | Minimum break/make pulse corrector |
| US4227054A (en) * | 1978-12-01 | 1980-10-07 | Bell Telephone Laboratories, Incorporated | Digital constant-percent break pulse corrector |
-
1968
- 1968-09-27 US US763077A patent/US3544724A/en not_active Expired - Lifetime
-
1969
- 1969-09-16 SE SE12719/69A patent/SE351101B/xx unknown
- 1969-09-22 NL NL6914338A patent/NL6914338A/xx not_active Application Discontinuation
- 1969-09-24 DE DE19691948180 patent/DE1948180B2/de not_active Withdrawn
- 1969-09-25 GB GB47160/69A patent/GB1286654A/en not_active Expired
- 1969-09-26 JP JP44076349A patent/JPS5022841B1/ja active Pending
- 1969-09-26 FR FR6933041A patent/FR2019087A1/fr not_active Withdrawn
- 1969-09-26 BE BE739426D patent/BE739426A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1948180A1 (de) | 1970-05-27 |
| US3544724A (en) | 1970-12-01 |
| JPS5022841B1 (xx) | 1975-08-02 |
| SE351101B (xx) | 1972-11-13 |
| DE1948180B2 (de) | 1971-02-04 |
| FR2019087A1 (xx) | 1970-06-26 |
| NL6914338A (xx) | 1970-04-01 |
| GB1286654A (en) | 1972-08-23 |