CN1189008C - 检测电话呼叫的装置和方法以及包括该装置的调制解调器 - Google Patents
检测电话呼叫的装置和方法以及包括该装置的调制解调器 Download PDFInfo
- Publication number
- CN1189008C CN1189008C CNB991273222A CN99127322A CN1189008C CN 1189008 C CN1189008 C CN 1189008C CN B991273222 A CNB991273222 A CN B991273222A CN 99127322 A CN99127322 A CN 99127322A CN 1189008 C CN1189008 C CN 1189008C
- Authority
- CN
- China
- Prior art keywords
- telephone line
- transfer function
- modulator
- demodulator
- static gain
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012546 transfer Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 230000003068 static effect Effects 0.000 claims description 29
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 27
- 238000004891 communication Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229930192334 Auxin Natural products 0.000 description 1
- 101150052008 TKL-1 gene Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002363 auxin Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9816740A FR2788184B1 (fr) | 1998-12-31 | 1998-12-31 | Methode, dispositif de detection de l'appel d'un telephone et modem comportant un tel dispositif |
FR9816740 | 1998-12-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1258987A CN1258987A (zh) | 2000-07-05 |
CN1189008C true CN1189008C (zh) | 2005-02-09 |
Family
ID=9534771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB991273222A Expired - Lifetime CN1189008C (zh) | 1998-12-31 | 1999-12-30 | 检测电话呼叫的装置和方法以及包括该装置的调制解调器 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6625263B1 (zh) |
EP (1) | EP1017218B1 (zh) |
JP (1) | JP2000216912A (zh) |
CN (1) | CN1189008C (zh) |
CA (1) | CA2292679A1 (zh) |
DE (1) | DE69930093T2 (zh) |
FR (1) | FR2788184B1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2829900B1 (fr) * | 2001-09-19 | 2004-05-21 | Thomson Licensing Sa | Procede, agencement, dispositifs pour la prise d'une ligne telephonique partagee |
US7184544B2 (en) * | 2003-02-24 | 2007-02-27 | Thomson Licensing | Device and method for detecting presence of service on telephone line |
EP2066103B1 (en) * | 2007-11-30 | 2017-03-01 | Alcatel Lucent | Switchable impedance xdsl splitter |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4958371A (en) * | 1988-04-19 | 1990-09-18 | Control Data Corporation | Method and apparatus for determining when a telephone handset is off-hook |
US5140631A (en) * | 1990-10-02 | 1992-08-18 | Intertex Data Ab | Apparatus and method for determining the state of a telephone line |
US5506891A (en) * | 1993-07-06 | 1996-04-09 | Cirrus Logic, Inc. | Method and apparatus for detecting the connection status of an extension phone connected to a voice/fax/data modem |
US5422939A (en) * | 1993-08-05 | 1995-06-06 | Schlumberger Industries, Inc. | Parallel off-hook detection for both line-available and phone pick-up detection |
US6134321A (en) * | 1995-12-22 | 2000-10-17 | Thomas Licensing S.A. | Modem loop current detect system to detect an off-hook condition in an extension telephone |
FR2777727B1 (fr) * | 1998-04-17 | 2000-06-30 | Thomson Multimedia Sa | Modem comportant un dispositif de detection de l'occupation d'une ligne telephonique |
US6215855B1 (en) * | 1999-01-21 | 2001-04-10 | Bell Atlantic Network Services, Inc. | Loop certification and measurement for ADSL |
-
1998
- 1998-12-31 FR FR9816740A patent/FR2788184B1/fr not_active Expired - Fee Related
-
1999
- 1999-12-10 DE DE69930093T patent/DE69930093T2/de not_active Expired - Lifetime
- 1999-12-10 EP EP99403115A patent/EP1017218B1/en not_active Expired - Lifetime
- 1999-12-17 CA CA002292679A patent/CA2292679A1/en not_active Abandoned
- 1999-12-20 US US09/467,404 patent/US6625263B1/en not_active Expired - Lifetime
- 1999-12-28 JP JP11374037A patent/JP2000216912A/ja active Pending
- 1999-12-30 CN CNB991273222A patent/CN1189008C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2000216912A (ja) | 2000-08-04 |
US6625263B1 (en) | 2003-09-23 |
DE69930093D1 (de) | 2006-04-27 |
DE69930093T2 (de) | 2006-11-23 |
EP1017218A1 (en) | 2000-07-05 |
EP1017218B1 (en) | 2006-03-01 |
FR2788184B1 (fr) | 2001-03-02 |
FR2788184A1 (fr) | 2000-07-07 |
CN1258987A (zh) | 2000-07-05 |
CA2292679A1 (en) | 2000-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: La France Patentee after: COLOR PRINTING TECHNOLOGY Co. Address before: La France Patentee before: THOMSON MULTIMEDIA |
|
CP02 | Change in the address of a patent holder | ||
CP02 | Change in the address of a patent holder |
Address after: I Si Eli Murli Nor, France Patentee after: THOMSON LICENSING S.A. Address before: French Boulogne Billancourt Patentee before: THOMSON LICENSING S.A. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190301 Address after: Paris France Patentee after: International Digital Madison Patent Holding Co. Address before: I Si Eli Murli Nor, France Patentee before: THOMSON LICENSING Effective date of registration: 20190301 Address after: I Si Eli Murli Nor, France Patentee after: THOMSON LICENSING Address before: I Si Eli Murli Nor, France Patentee before: THOMSON LICENSING S.A. Effective date of registration: 20190301 Address after: French Boulogne Billancourt Patentee after: THOMSON LICENSING S.A. Address before: La France Patentee before: COLOR PRINTING TECHNOLOGY Co. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20050209 |