JPS555752B1 - - Google Patents
Info
- Publication number
- JPS555752B1 JPS555752B1 JP1143372A JP1143372A JPS555752B1 JP S555752 B1 JPS555752 B1 JP S555752B1 JP 1143372 A JP1143372 A JP 1143372A JP 1143372 A JP1143372 A JP 1143372A JP S555752 B1 JPS555752 B1 JP S555752B1
- Authority
- JP
- Japan
- 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.)
- Pending
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)
- Noise Elimination (AREA)
- Circuit For Audible Band Transducer (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7101521A NL7101521A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-02-05 | 1971-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS555752B1 true JPS555752B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-02-08 |
Family
ID=19812409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1143372A Pending JPS555752B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-02-05 | 1972-02-02 |
Country Status (5)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018003956T5 (de) | 2017-08-01 | 2020-05-14 | Tama Bio Inc. | Medizinische Auflage |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE396684B (sv) * | 1976-02-09 | 1977-09-26 | Ericsson Telefon Ab L M | Hallkrets i en mottagaranordning for mfc-signalering |
| SE397763B (sv) * | 1976-03-09 | 1977-11-14 | Ericsson Telefon Ab L M | Mottagaranordning for storningskenslig detektering av atminstone tva tonfrekvenser i en inkommande tonsignal |
| FR2373926A1 (fr) * | 1976-12-10 | 1978-07-07 | Constr Telephoniques | Recepteur de signaux multifrequences |
| DE3104138A1 (de) * | 1981-02-06 | 1982-08-19 | TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | Teilnehmerschaltung |
| DE3115151A1 (de) * | 1981-04-15 | 1982-11-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur auswertung von aus mehreren gleichzeitig uebertragenen wechselstroemen unterschiedlicher signalfrequenzen gebildeten wechselstromsignalen, in fernmeldeanlagen |
| CN113970521B (zh) * | 2021-10-15 | 2023-09-26 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 分接开关油样的监测方法及装置 |
-
1971
- 1971-02-05 NL NL7101521A patent/NL7101521A/xx not_active Application Discontinuation
-
1972
- 1972-01-14 DE DE19722201609 patent/DE2201609C3/de not_active Expired
- 1972-02-02 JP JP1143372A patent/JPS555752B1/ja active Pending
- 1972-02-02 GB GB489572A patent/GB1377021A/en not_active Expired
- 1972-02-04 FR FR7203789A patent/FR2124484B1/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018003956T5 (de) | 2017-08-01 | 2020-05-14 | Tama Bio Inc. | Medizinische Auflage |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2201609C3 (de) | 1979-03-22 |
| GB1377021A (en) | 1974-12-11 |
| FR2124484B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-04-01 |
| DE2201609B2 (de) | 1978-06-29 |
| DE2201609A1 (de) | 1972-08-10 |
| NL7101521A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-08-08 |
| FR2124484A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-09-22 |