CA1177587A - Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique - Google Patents
Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephoniqueInfo
- Publication number
- CA1177587A CA1177587A CA000409949A CA409949A CA1177587A CA 1177587 A CA1177587 A CA 1177587A CA 000409949 A CA000409949 A CA 000409949A CA 409949 A CA409949 A CA 409949A CA 1177587 A CA1177587 A CA 1177587A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- signals
- time
- amplitude
- signaling
- 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
Links
- 230000011664 signaling Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 26
- 230000002123 temporal effect Effects 0.000 claims description 10
- 230000001755 vocal effect Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 claims 1
- 238000004904 shortening Methods 0.000 claims 1
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- 230000003472 neutralizing effect Effects 0.000 abstract description 2
- 235000009108 Urtica dioica Nutrition 0.000 description 11
- 241000219422 Urtica Species 0.000 description 10
- 238000012937 correction Methods 0.000 description 9
- 230000001960 triggered effect Effects 0.000 description 8
- 238000010200 validation analysis Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
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- 230000000630 rising effect Effects 0.000 description 5
- 101150006061 neur gene Proteins 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100102503 Caenorhabditis elegans ver-3 gene Proteins 0.000 description 1
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- 241000218220 Ulmaceae Species 0.000 description 1
- 241000218215 Urticaceae Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000013479 data entry Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Bidirectional Digital Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8122241 | 1981-11-27 | ||
| FR8122241A FR2517499A1 (fr) | 1981-11-27 | 1981-11-27 | Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1177587A true CA1177587A (fr) | 1984-11-06 |
Family
ID=9264432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000409949A Expired CA1177587A (fr) | 1981-11-27 | 1982-08-23 | Procede et dispositif de detection de signaux de donnees et de signalisation sur une voie telephonique |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4469916A (enExample) |
| EP (1) | EP0080688B1 (enExample) |
| JP (1) | JPS5899060A (enExample) |
| CA (1) | CA1177587A (enExample) |
| DE (1) | DE3269709D1 (enExample) |
| FR (1) | FR2517499A1 (enExample) |
| IE (1) | IE54876B1 (enExample) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121856A (ja) * | 1983-12-06 | 1985-06-29 | Nec Corp | 単一周波数信号検出回路 |
| US4571463A (en) * | 1984-06-01 | 1986-02-18 | Code-A-Phone Corporation | Method and system for automatically inserting at least one pause into means for memorizing a dialing sequence |
| US4885755A (en) * | 1985-04-10 | 1989-12-05 | Canon Kabushiki Kaisha | Method and apparatus for data communication |
| US4696031A (en) * | 1985-12-31 | 1987-09-22 | Wang Laboratories, Inc. | Signal detection and discrimination using waveform peak factor |
| NO165369C (no) * | 1988-05-02 | 1991-01-30 | Informasjonskontroll A S | Fremgangsmaate og mottaker for signaldeteksjon. |
| WO1994000944A1 (en) * | 1992-06-30 | 1994-01-06 | Polycom, Inc. | Method and apparatus for ringer detection |
| JPH07123236B2 (ja) * | 1992-12-18 | 1995-12-25 | 日本電気株式会社 | 双方向通話状態検出回路 |
| US5631958A (en) * | 1994-10-04 | 1997-05-20 | Coherent Communications Systems Corp. | Automatic echo cancellation for an integrated services digital network interface |
| US5764753A (en) * | 1995-09-29 | 1998-06-09 | Crystal Semiconductor Corp. | Half-duplex controller |
| US7269288B2 (en) * | 2003-07-30 | 2007-09-11 | Mediatek Inc. | Apparatus for parallel calculation of prediction bits in a spatially predicted coded block pattern and method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3069501A (en) * | 1958-08-20 | 1962-12-18 | Bell Telephone Labor Inc | Transmission control in two-way signaling systems |
| US3647993A (en) * | 1970-05-18 | 1972-03-07 | Wescom | Tone disabler |
| FR2240583B1 (enExample) * | 1973-08-08 | 1976-11-12 | Cit Alcatel | |
| US3859462A (en) * | 1973-08-15 | 1975-01-07 | Itt | Arrangement to control a function at a remote location |
| JPS5622194B2 (enExample) * | 1973-12-20 | 1981-05-23 | ||
| US3979559A (en) * | 1974-01-31 | 1976-09-07 | Milgo Electronics Corporation | Data modem having line verification and automatic disconnect features |
| CH633903A5 (de) * | 1978-09-26 | 1982-12-31 | Feller Ag | Sprachschalter fuer ein an eine telefonleitung anzuschliessendes geraet. |
| US4352962A (en) * | 1980-06-27 | 1982-10-05 | Reliance Electric Company | Tone responsive disabling circuit |
-
1981
- 1981-11-27 FR FR8122241A patent/FR2517499A1/fr active Granted
-
1982
- 1982-08-16 US US06/408,305 patent/US4469916A/en not_active Expired - Lifetime
- 1982-08-23 CA CA000409949A patent/CA1177587A/fr not_active Expired
- 1982-11-23 EP EP82110801A patent/EP0080688B1/fr not_active Expired
- 1982-11-23 DE DE8282110801T patent/DE3269709D1/de not_active Expired
- 1982-11-26 JP JP57207437A patent/JPS5899060A/ja active Pending
- 1982-11-26 IE IE2823/82A patent/IE54876B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0080688B1 (fr) | 1986-03-05 |
| US4469916A (en) | 1984-09-04 |
| FR2517499A1 (fr) | 1983-06-03 |
| FR2517499B1 (enExample) | 1984-01-27 |
| IE54876B1 (en) | 1990-03-14 |
| DE3269709D1 (en) | 1986-04-10 |
| EP0080688A1 (fr) | 1983-06-08 |
| JPS5899060A (ja) | 1983-06-13 |
| IE822823L (en) | 1983-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |