CA2031180A1 - Circuit de ligne telephonique a semiconducteur - Google Patents
Circuit de ligne telephonique a semiconducteurInfo
- Publication number
- CA2031180A1 CA2031180A1 CA 2031180 CA2031180A CA2031180A1 CA 2031180 A1 CA2031180 A1 CA 2031180A1 CA 2031180 CA2031180 CA 2031180 CA 2031180 A CA2031180 A CA 2031180A CA 2031180 A1 CA2031180 A1 CA 2031180A1
- Authority
- CA
- Canada
- Prior art keywords
- loop
- voltage
- speech signals
- circuit
- subscriber
- Prior art date
- 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.)
- Abandoned
Links
- 239000007787 solid Substances 0.000 title claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- OSDLLIBGSJNGJE-UHFFFAOYSA-N 4-chloro-3,5-dimethylphenol Chemical compound CC1=CC(O)=CC(C)=C1Cl OSDLLIBGSJNGJE-UHFFFAOYSA-N 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- JOUSPCDMLWUHSO-UHFFFAOYSA-N oxovanadium;propan-2-ol Chemical compound [V]=O.CC(C)O.CC(C)O.CC(C)O JOUSPCDMLWUHSO-UHFFFAOYSA-N 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44551789A | 1989-12-04 | 1989-12-04 | |
| US445,517 | 1989-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2031180A1 true CA2031180A1 (fr) | 1991-06-05 |
Family
ID=23769219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2031180 Abandoned CA2031180A1 (fr) | 1989-12-04 | 1990-11-29 | Circuit de ligne telephonique a semiconducteur |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2031180A1 (fr) |
-
1990
- 1990-11-29 CA CA 2031180 patent/CA2031180A1/fr not_active Abandoned
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5175764A (en) | Enhanced high voltage line interface circuit | |
| US4899382A (en) | Telephone circuit using DC blocked transformer and negative impedance technique | |
| CA1096522A (fr) | Circuit pour ligne d'abonne | |
| EP0503528A2 (fr) | Circuit d'interface de ligne d'abonné pour application en RNIS et téléphonie clonique avec circuit annuleur d'écho | |
| US4685129A (en) | Power transmission arrangement for telecommunications systems | |
| WO1993007668A1 (fr) | Dispositif d'isolation a semi-conducteur utilisant des opto-isolateurs | |
| EP0212632A2 (fr) | Circuit d'interface de ligne d'abonné | |
| US4472608A (en) | Subscriber line interface circuit | |
| JP2562757B2 (ja) | ライン・インタフェース回路 | |
| JPS6219105B2 (fr) | ||
| US4088843A (en) | Electronic current feed circuit | |
| US4961219A (en) | Circuit for synthesizing an impedance across the tip and ring leads of a telephone line circuit | |
| JPH0626400B2 (ja) | 電話システム用電子バツテリーフイード回路 | |
| US3955052A (en) | Subscriber unit particularly useful for time-division-multiplex system | |
| US5274704A (en) | Transformer telephone line interface circuit | |
| US6192125B1 (en) | Optical coupling circuit for a data access arrangement (DAA) | |
| US4538032A (en) | Interface circuit with impedance adaptation means | |
| US4354062A (en) | Communication system signaling circuit | |
| US4622441A (en) | Two-wire/four wire communication interface with noise rejection | |
| EP0096473B1 (fr) | Circuit d'alimentation de ligne à impédance active | |
| US4358645A (en) | Loop sensing circuit for use with a subscriber loop interface circuit | |
| CA1208385A (fr) | Circuit d'alimentation a batterie pour ligne d'abonne du telephone | |
| GB1572595A (en) | Two-wire to four-wire converters | |
| CA2031180A1 (fr) | Circuit de ligne telephonique a semiconducteur | |
| US6377681B1 (en) | Signal line driving circuit with self-controlled power dissipation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |