CA2353892A1 - Real-time technique for reducing the settling time of a high pass filter - Google Patents
Real-time technique for reducing the settling time of a high pass filter Download PDFInfo
- Publication number
- CA2353892A1 CA2353892A1 CA002353892A CA2353892A CA2353892A1 CA 2353892 A1 CA2353892 A1 CA 2353892A1 CA 002353892 A CA002353892 A CA 002353892A CA 2353892 A CA2353892 A CA 2353892A CA 2353892 A1 CA2353892 A1 CA 2353892A1
- Authority
- CA
- Canada
- Prior art keywords
- input signal
- hpf
- slope
- sharp transition
- transition
- 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
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 65
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims abstract description 7
- 238000010926 purge Methods 0.000 claims description 3
- 235000015115 caffè latte Nutrition 0.000 abstract 1
- 230000036772 blood pressure Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000541 pulsatile effect Effects 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035488 systolic blood pressure Effects 0.000 description 2
- 230000004872 arterial blood pressure Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000008081 blood perfusion Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035487 diastolic blood pressure Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0219—Compensation of undesirable effects, e.g. quantisation noise, overflow
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Networks Using Active Elements (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Filters And Equalizers (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Emergency Protection Circuit Devices (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/207,697 US6249796B1 (en) | 1998-12-08 | 1998-12-08 | Real-time technique for reducing the settling time of a high pass filter |
| US09/207,697 | 1998-12-08 | ||
| PCT/US1999/027707 WO2000035087A1 (en) | 1998-12-08 | 1999-11-22 | Real-time technique for reducing the settling time of a high pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2353892A1 true CA2353892A1 (en) | 2000-06-15 |
Family
ID=22771627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002353892A Abandoned CA2353892A1 (en) | 1998-12-08 | 1999-11-22 | Real-time technique for reducing the settling time of a high pass filter |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6249796B1 (https=) |
| EP (1) | EP1138117B1 (https=) |
| JP (1) | JP2002532120A (https=) |
| AT (1) | ATE259116T1 (https=) |
| CA (1) | CA2353892A1 (https=) |
| DE (1) | DE69914631T2 (https=) |
| NO (1) | NO20012819L (https=) |
| WO (1) | WO2000035087A1 (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7130802B1 (en) * | 2000-10-02 | 2006-10-31 | Ninesigma, Inc. | Systems and methods for facilitating research and development |
| JP6003470B2 (ja) * | 2012-09-25 | 2016-10-05 | オムロンヘルスケア株式会社 | 血圧測定装置、脈波検出方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4542475A (en) | 1982-11-23 | 1985-09-17 | Rca Corporation | Sampled data filter system as for a digital TV |
| DE3719405C2 (de) | 1987-06-11 | 1994-09-29 | Broadcast Television Syst | Schaltungsanordnung zur Verdeckung von Fehlern |
| US4958361A (en) | 1988-04-22 | 1990-09-18 | Hughes Aircraft Company | Edge effect reduction by smoothing in digital receivers |
| JP2888782B2 (ja) * | 1995-09-08 | 1999-05-10 | エヌ・ティ・ティ移動通信網株式会社 | 通信のためのフィルタ回路 |
| US5388221A (en) | 1992-05-05 | 1995-02-07 | Meitner; Edmund | Adaptive digital audio interpolation system |
| EP0576770B1 (en) | 1992-05-22 | 1999-12-22 | STMicroelectronics S.r.l. | Audio Amplifier turn-off control circuit |
| EP0693213A1 (en) | 1993-04-06 | 1996-01-24 | Cirrus Logic, Inc. | Spectral smoothing filter |
| US5615234A (en) | 1994-05-19 | 1997-03-25 | Spacelabs Medical, Inc. | Digital high-pass filter having baseline restoration means |
| US5867410A (en) * | 1996-09-27 | 1999-02-02 | Varian Associates, Inc. | Time correction for digital filters in transient measurments |
| JPH10222493A (ja) * | 1997-02-06 | 1998-08-21 | Kokusai Denshin Denwa Co Ltd <Kdd> | 相互因果関係解析システム |
-
1998
- 1998-12-08 US US09/207,697 patent/US6249796B1/en not_active Expired - Lifetime
-
1999
- 1999-11-22 AT AT99962831T patent/ATE259116T1/de not_active IP Right Cessation
- 1999-11-22 JP JP2000587440A patent/JP2002532120A/ja not_active Ceased
- 1999-11-22 WO PCT/US1999/027707 patent/WO2000035087A1/en not_active Ceased
- 1999-11-22 EP EP99962831A patent/EP1138117B1/en not_active Expired - Lifetime
- 1999-11-22 DE DE69914631T patent/DE69914631T2/de not_active Expired - Lifetime
- 1999-11-22 CA CA002353892A patent/CA2353892A1/en not_active Abandoned
-
2001
- 2001-06-07 NO NO20012819A patent/NO20012819L/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO20012819D0 (no) | 2001-06-07 |
| US6249796B1 (en) | 2001-06-19 |
| DE69914631D1 (de) | 2004-03-11 |
| NO20012819L (no) | 2001-06-07 |
| JP2002532120A (ja) | 2002-10-02 |
| WO2000035087A1 (en) | 2000-06-15 |
| DE69914631T2 (de) | 2005-08-04 |
| EP1138117A1 (en) | 2001-10-04 |
| EP1138117B1 (en) | 2004-02-04 |
| ATE259116T1 (de) | 2004-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |