IT8422270A0 - Comparatore lineare per circuiti interfonici integrabile ad alta sensibilita'. - Google Patents
Comparatore lineare per circuiti interfonici integrabile ad alta sensibilita'.Info
- Publication number
- IT8422270A0 IT8422270A0 IT8422270A IT2227084A IT8422270A0 IT 8422270 A0 IT8422270 A0 IT 8422270A0 IT 8422270 A IT8422270 A IT 8422270A IT 2227084 A IT2227084 A IT 2227084A IT 8422270 A0 IT8422270 A0 IT 8422270A0
- Authority
- IT
- Italy
- Prior art keywords
- high sensitivity
- integrated high
- linear comparator
- sensitivity linear
- intercom
- Prior art date
Links
- 230000035945 sensitivity Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Telephone Function (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/522,106 US4492824A (en) | 1983-08-11 | 1983-08-11 | Speakerphone linear comparator |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8422270A0 true IT8422270A0 (it) | 1984-08-08 |
IT1176585B IT1176585B (it) | 1987-08-18 |
Family
ID=24079494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22270/84A IT1176585B (it) | 1983-08-11 | 1984-08-08 | Comparatore lineare per circuiti interfonici integrabile ad alta sensibilita' |
Country Status (7)
Country | Link |
---|---|
US (1) | US4492824A (it) |
JP (1) | JPS6053362A (it) |
CA (1) | CA1215796A (it) |
DE (1) | DE3429139C2 (it) |
FR (1) | FR2550672A1 (it) |
GB (1) | GB2144951A (it) |
IT (1) | IT1176585B (it) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4665547A (en) * | 1984-11-02 | 1987-05-12 | At&T Company | Limiting amplifier for common mode feedback in telephone line feed circuits |
US4944002A (en) * | 1989-05-08 | 1990-07-24 | Motorola, Inc. | Current switch for use in telephony systems or the like |
JP3838731B2 (ja) * | 1997-03-14 | 2006-10-25 | ローム株式会社 | 増幅器 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL267461A (it) * | 1960-10-04 | 1900-01-01 | ||
US3751602A (en) * | 1971-08-13 | 1973-08-07 | Bell Telephone Labor Inc | Loudspeaking telephone |
US3889059A (en) * | 1973-03-26 | 1975-06-10 | Northern Electric Co | Loudspeaking communication terminal apparatus and method of operation |
US3963868A (en) * | 1974-06-27 | 1976-06-15 | Stromberg-Carlson Corporation | Loudspeaking telephone hysteresis and ambient noise control |
ZA755743B (en) * | 1974-09-27 | 1976-08-25 | Gen Electric | Improvements in or relating to loudspeaking telephone instruments |
JPS5923668B2 (ja) * | 1979-03-26 | 1984-06-04 | 沖電気工業株式会社 | 音声制御方式 |
IL63653A (en) * | 1980-08-29 | 1984-05-31 | Western Electric Co | Line powered transformer-less loudspeaking telephone |
US4490582A (en) * | 1983-02-18 | 1984-12-25 | At&T Information Systems Inc. | Speakerphone control circuit |
-
1983
- 1983-08-11 US US06/522,106 patent/US4492824A/en not_active Expired - Fee Related
-
1984
- 1984-06-28 CA CA000457645A patent/CA1215796A/en not_active Expired
- 1984-08-06 FR FR8412403A patent/FR2550672A1/fr not_active Withdrawn
- 1984-08-07 GB GB08420089A patent/GB2144951A/en not_active Withdrawn
- 1984-08-08 IT IT22270/84A patent/IT1176585B/it active
- 1984-08-08 DE DE3429139A patent/DE3429139C2/de not_active Expired
- 1984-08-10 JP JP59166619A patent/JPS6053362A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
IT1176585B (it) | 1987-08-18 |
US4492824A (en) | 1985-01-08 |
GB2144951A (en) | 1985-03-13 |
GB8420089D0 (en) | 1984-09-12 |
CA1215796A (en) | 1986-12-23 |
DE3429139A1 (de) | 1985-02-28 |
DE3429139C2 (de) | 1985-12-12 |
FR2550672A1 (fr) | 1985-02-15 |
JPS6053362A (ja) | 1985-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69209169D1 (de) | Verbindungstechnik für integrierte Schaltung | |
DE59102863D1 (de) | Messwertaufnehmer. | |
FI901893A (fi) | Kopplingsanordning. | |
FI913919A (fi) | Tidomraodesfiltrering foer nmr fasgruppavbildning. | |
DE69127320D1 (de) | Integrierte Schaltkreise mit lokaler Bedingungskompensation | |
ITTO920622A0 (it) | Procedimento di misura per circuiti integrati. | |
DE69122463D1 (de) | Integrierte Schaltkreise | |
DE69227348T2 (de) | DIVIDIERSCHALTUNG FüR GLEITKOMMAZAHLEN | |
IT8224690A0 (it) | Procedimento di fabbricazione di circuiti stampati. | |
IT8423065A0 (it) | Armadietto per circuiti stampati. | |
DE3787668D1 (de) | Verlagerungsdetektor für einen Codierer. | |
DE69106652D1 (de) | Fassung für integrierte Schaltung. | |
DE69128002D1 (de) | Detektor-Schaltkreis | |
IT8423807A0 (it) | Condensatore di disaccoppiamento per circuiti integrati. | |
FI925053A0 (fi) | Imidazo(4,5-c)pyridiner med paf-antagonistaktivitet | |
DE3788516D1 (de) | Ausgangskreis für abbildungssensor. | |
DE69127954D1 (de) | Erkennungsschaltung für Bewegungssignal | |
IT8422270A0 (it) | Comparatore lineare per circuiti interfonici integrabile ad alta sensibilita'. | |
SE9100906L (sv) | Elektrodsystem foer spaenningsmaetning | |
DE59208956D1 (de) | Integrierte Komparatorschaltung | |
DE59006070D1 (de) | Schaltungsträger. | |
DE59105649D1 (de) | Prüfvorrichtung. | |
DE59006579D1 (de) | Integrierte Begrenzerschaltung für Wechselspannungen. | |
DE59009720D1 (de) | Komparatorschaltung. | |
DE69018806D1 (de) | Packungsstruktur für integrierte Schaltung. |