CN1087122C - 一种用户线接口电路 - Google Patents
一种用户线接口电路 Download PDFInfo
- Publication number
- CN1087122C CN1087122C CN96112345A CN96112345A CN1087122C CN 1087122 C CN1087122 C CN 1087122C CN 96112345 A CN96112345 A CN 96112345A CN 96112345 A CN96112345 A CN 96112345A CN 1087122 C CN1087122 C CN 1087122C
- Authority
- CN
- China
- Prior art keywords
- voltage
- phase
- resistance
- output
- input
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/005—Feeding arrangements without the use of line transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7269115A JP2760325B2 (ja) | 1995-09-22 | 1995-09-22 | 加入者回路 |
JP269115/95 | 1995-09-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1155204A CN1155204A (zh) | 1997-07-23 |
CN1087122C true CN1087122C (zh) | 2002-07-03 |
Family
ID=17467891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96112345A Expired - Fee Related CN1087122C (zh) | 1995-09-22 | 1996-09-20 | 一种用户线接口电路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5734714A (zh) |
EP (1) | EP0789477B1 (zh) |
JP (1) | JP2760325B2 (zh) |
CN (1) | CN1087122C (zh) |
DE (1) | DE69633906T2 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101743713B (zh) * | 2008-05-12 | 2013-03-27 | 索尼公司 | 接口电路 |
CN103957449A (zh) * | 2007-11-22 | 2014-07-30 | 索尼株式会社 | 接口电路 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6700975B1 (en) | 1996-11-08 | 2004-03-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Subscriber line interface circuit |
SE507920C2 (sv) * | 1996-11-08 | 1998-07-27 | Ericsson Telefon Ab L M | Linjekrets |
JP3509022B2 (ja) | 2002-05-31 | 2004-03-22 | 沖電気工業株式会社 | チョッパ型コンパレータ |
JP4107010B2 (ja) * | 2002-08-26 | 2008-06-25 | 株式会社村田製作所 | 直流増幅回路の直流電圧測定方法 |
DE102005046383B4 (de) * | 2005-09-28 | 2007-10-25 | Siemens Ag | Verfahren und Einrichtung zur Überprüfung der Funktion zur Invertierung der Polarität auf einer mehrere Adern umfassenden Teilnehmeranschlussleitung |
US7260212B1 (en) | 2007-03-30 | 2007-08-21 | Winbond Electronics Corporation | Method and apparatus for subscriber line control circuit |
US8150026B2 (en) | 2007-06-16 | 2012-04-03 | Winbond Electronics Corporation | Method and system for subscriber line interface circuit |
US8335310B2 (en) | 2007-06-16 | 2012-12-18 | Nuvoton Technology Corporation | Method and system for subscriber line interface circuit having a high-voltage MOS linefeed circuit |
WO2009155744A1 (zh) * | 2008-06-26 | 2009-12-30 | 广州金升阳科技有限公司 | 信号转换电路及隔离放大器 |
CN104730310A (zh) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | 一种具有可变衰减单元的测量装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0600175A1 (en) * | 1992-11-30 | 1994-06-08 | Motorola, Inc. | Subscriber line interface circuit for controlling AC and DC output impedance |
EP0615375A2 (en) * | 1993-03-12 | 1994-09-14 | Advanced Micro Devices, Inc. | Subscriber line interface circuit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4147900A (en) * | 1977-04-07 | 1979-04-03 | Harvey Hubbell Incorporated | Telephone network protective coupler |
CA1178386A (en) * | 1982-06-07 | 1984-11-20 | Stanley D. Rosenbaum | Active impedance transformer assisted line feed circuit |
EP0215677B1 (en) * | 1985-09-20 | 1992-07-22 | Nec Corporation | Subscriber line interface circuit having means for combining dc and ac feedback signals |
SE465547B (sv) * | 1990-02-01 | 1991-09-23 | Ericsson Telefon Ab L M | Saett och krets foer likstroemsmatning till en telefonlinje |
KR960006112Y1 (ko) * | 1991-04-30 | 1996-07-20 | 강진구 | 잡음제거회로 |
US5406631A (en) * | 1992-08-05 | 1995-04-11 | Rohm Co., Ltd. | Stereo signal demodulator circuit and stereo signal demodulator using the same |
-
1995
- 1995-09-22 JP JP7269115A patent/JP2760325B2/ja not_active Expired - Fee Related
-
1996
- 1996-09-19 US US08/718,181 patent/US5734714A/en not_active Expired - Lifetime
- 1996-09-19 DE DE69633906T patent/DE69633906T2/de not_active Expired - Lifetime
- 1996-09-19 EP EP96115078A patent/EP0789477B1/en not_active Expired - Lifetime
- 1996-09-20 CN CN96112345A patent/CN1087122C/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0600175A1 (en) * | 1992-11-30 | 1994-06-08 | Motorola, Inc. | Subscriber line interface circuit for controlling AC and DC output impedance |
EP0615375A2 (en) * | 1993-03-12 | 1994-09-14 | Advanced Micro Devices, Inc. | Subscriber line interface circuit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103957449A (zh) * | 2007-11-22 | 2014-07-30 | 索尼株式会社 | 接口电路 |
CN101743713B (zh) * | 2008-05-12 | 2013-03-27 | 索尼公司 | 接口电路 |
Also Published As
Publication number | Publication date |
---|---|
US5734714A (en) | 1998-03-31 |
CN1155204A (zh) | 1997-07-23 |
EP0789477B1 (en) | 2004-11-24 |
EP0789477A3 (en) | 2003-08-20 |
EP0789477A2 (en) | 1997-08-13 |
DE69633906T2 (de) | 2005-11-24 |
DE69633906D1 (de) | 2004-12-30 |
JP2760325B2 (ja) | 1998-05-28 |
JPH0993624A (ja) | 1997-04-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: NEC ELECTRONICS TAIWAN LTD. Free format text: FORMER OWNER: NIPPON ELECTRIC CO., LTD. Effective date: 20030411 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20030411 Address after: Kawasaki, Kanagawa, Japan Patentee after: NEC Corp. Address before: Tokyo, Japan Patentee before: NEC Corp. |
|
C56 | Change in the name or address of the patentee |
Owner name: RENESAS KANSAI CO., LTD. Free format text: FORMER NAME: NEC CORP. |
|
CP01 | Change in the name or title of a patent holder |
Address after: Kawasaki, Kanagawa, Japan Patentee after: Renesas Electronics Corporation Address before: Kawasaki, Kanagawa, Japan Patentee before: NEC Corp. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020703 Termination date: 20140920 |
|
EXPY | Termination of patent right or utility model |