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公开(公告)号：CA2221446A1
公开(公告)日：1996-12-19
申请号：CA2221446
申请日：1996-06-04
Applicant: MASIMO CORP
Inventor： KIANI-AZARBAYJANY ESMAIEL , LEPPER JAMES M JR , RAGSDALE CHARLES ROBERT , DIAB MOHAMED KHEIR
IPC: H05B44/00 , A61B5/00 , A61B5/145 , A61B5/1455 , A61B5/1495 , G01J3/10 , G01J3/28 , G01N21/01 , G01N21/25 , G01N21/27 , G01N21/39 , G01N21/64 , G05F3/08 , H05B37/02 , H05B33/08 , G01J9/00 , G01N21/00 , A61B5/14
Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such as a light-emitting diode.
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公开(公告)号：CA2221446C
公开(公告)日：2008-09-30
申请号：CA2221446
申请日：1996-06-04
Applicant: MASIMO CORP
Inventor： DIAB MOHAMED KHEIR , KIANI-AZARBAYJANY ESMAIEL , LEPPER JAMES M JR , RAGSDALE CHARLES ROBERT
IPC: H05B44/00 , A61B5/00 , A61B5/145 , A61B5/1455 , A61B5/1495 , G01J3/10 , G01J3/28 , G01J9/00 , G01N21/00 , G01N21/01 , G01N21/25 , G01N21/27 , G01N21/39 , G01N21/64 , G05F3/08 , H05B37/02
Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs)(162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such as a light--emitting diode.
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公开(公告)号：CA2199016C
公开(公告)日：2002-01-01
申请号：CA2199016
申请日：1995-10-10
Applicant: MASIMO CORP
Inventor： WEBER WALTER MICHAEL , MCCARTHY REX JOHN , ELFADEL IBRAHIM , DIAB MOHAMED KHEIR , SMITH ROBERT A , KIANI-AZARBAYJANY ESMAIEL
IPC: A61B5/0245 , A61B5/00 , A61B5/02 , A61B5/0215 , A61B5/145 , A61B5/1455 , A61B5/1464 , A61B6/00 , A61B8/00 , G06F17/00 , G06F19/00 , H04B1/12 , H04B3/46 , H04B17/00 , G06F17/14
Abstract: The present invention involves method and apparatus for analyzing two measur ed signals acquired by a detector (20) that are modeled as containing primary a nd secondary portions. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, the present invention involves utilizing a transformation which evaluates a plurality of possible signal coefficients in order to find appropriate coefficients. Alternatively, the present invention involves using statistica l functions or Fourier transform and windowing techniques to determine the coefficients relating to two measured signals. Use of this invention is described in particular detail with respect to blood oximetry measurements.
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公开(公告)号：AU729132B2
公开(公告)日：2001-01-25
申请号：AU4106599
申请日：1999-07-22
Applicant: MASIMO CORP
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公开(公告)号：HK1009848A1
公开(公告)日：1999-06-11
申请号：HK98110565
申请日：1998-09-10
Applicant: MASIMO CORP
Inventor： DIAB MOHAMED KHEIR , KIANI-AZARBAYJANY ESMAIEL , RAGSDALE CHARLES ROBERT , LEPPER JAMES M JR
IPC: A61B5/00 , H05B44/00 , A61B5/145 , A61B5/1455 , A61B5/1495 , G01J3/10 , G01J3/28 , G01N21/01 , G01N21/25 , G01N21/27 , G01N21/39 , G01N21/64 , G05F3/08 , H05B37/02 , G01J
Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such a light-emitting diode.
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Patent Agency Ranking
公开(公告)号：HK1009734A1
公开(公告)日：1999-06-11
申请号：HK98110568
申请日：1998-09-10
Applicant: MASIMO CORP
Inventor： DIAB MOHAMED KHEIR , LEPPER JAMES M JR , KIANI-AZARBAYJANY ESMAIEL
IPC: G01N21/35 , A61B5/00 , A61B5/145 , A61B5/1455 , A61B
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公开(公告)号：AU704383B2
公开(公告)日：1999-04-22
申请号：AU5977196
申请日：1996-06-04
Applicant: MASIMO CORP
Inventor： DIAB MOHAMED KHEIR , KIANI-AZARBAYJANY ESMAIEL , RAGSDALE CHARLES ROBERT , LEPPER JAMES M JR
IPC: A61B5/00 , A61B5/145 , A61B5/1455 , A61B5/1495 , G01J3/10 , G01J3/28 , G01N21/01 , G01N21/25 , G01N21/27 , G01N21/39 , G01N21/64 , G05F3/08 , H05B37/02
Abstract: The method and apparatus of the present invention provides a system wherein light-emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provides a system in which it is not necessary to know precise wavelengths of LEDs where precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such a light-emitting diode.
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公开(公告)号：CA2637855A1
公开(公告)日：1996-12-19
申请号：CA2637855
申请日：1996-06-04
Applicant: MASIMO CORP
Inventor： LEPPER JAMES M JR , KIANI-AZARBAY JANY ESMAIEL , RAGSDALE CHARLES ROBERT , DIAB MOHAMED KHEIR
IPC: A61B5/1495 , H05B44/00 , A61B5/00 , A61B5/145 , A61B5/1455 , G01J3/10 , G01J3/28 , G01N21/01 , G01N21/25 , G01N21/27 , G01N21/39 , G01N21/64 , G05F3/08 , H05B37/02
Abstract: The method and apparatus of the present invention provides a system wherein light--emitting diodes (LEDs) (162) can be tuned within a given range by selecting their operating drive current in order to obtain a precise wavelength. The present invention further provides in a manner in which to calibrate and utilize an LED probe (150), such that the shift in wavelength for a known change in drive current is a known quantity. In general, the principle of wavelength shift for current drive changes for LEDs is utilized in order to allow better calibration and added flexibility in the use of LED sensors, particularly in applications when the precise wavelength is needed in order to obtain accurate measurements. The present invention also provide s a system in which it is not necessary to know precise wavelengths of LEDs wher e precise wavelengths were needed in the past. Finally, the present invention provides a method and apparatus for determining the operating wavelength of a light-emitting element such as a light emitting diode.
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公开(公告)号：CA2221859A1
公开(公告)日：1996-12-19
申请号：CA2221859
申请日：1996-06-04
Applicant: MASIMO CORP
Inventor： LEPPER JAMES M JR , DIAB MOHAMED KHEIR
IPC: G01J3/12 , G01J3/26 , G01N21/31 , G02B5/20 , G02B5/28 , G02B1/00 , G02B5/00 , G02B1/10 , A61B5/14
Abstract: An optical filter used in applications involving spectroscopic measurements is fabricated by depositing layers of optical coatings onto a substrate. The layers are deposited so as to have a substantially constant thickness in a first direction along the surface of the substrate, and a gradually increasing thickness along a direction perpendicular to the first direction. The structure of the optical filter allows for large scale production of the filter so that costs in producing the filter are greatly reduced. The filter may be used in a variety of applications including, but not limited to chemical analysis, blood glucose monitoring, and the like.
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公开(公告)号：CA2199016A1
公开(公告)日：1996-05-02
申请号：CA2199016
申请日：1995-10-10
Applicant: MASIMO CORP
Inventor： DIAB MOHAMED KHEIR , KIANI-AZARBAYJANY ESMAIEL , ELFADEL IBRAHIM , MCCARTHY REX JOHN , WEBER WALTER MICHAEL , SMITH ROBERT A
IPC: A61B5/0245 , A61B5/00 , A61B5/02 , A61B5/0215 , A61B5/145 , A61B5/1455 , A61B5/1464 , A61B6/00 , A61B8/00 , G06F17/00 , G06F19/00 , H04B1/12 , H04B3/46 , H04B17/00 , G06F17/14
Abstract: The present invention involves method and apparatus for analyzing two measur ed signals acquired by a detector (20) that are modeled as containing primary a nd secondary portions. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, the present invention involves utilizing a transformation which evaluates a plurality of possible signal coefficients in order to find appropriate coefficients. Alternatively, the present invention involves using statistica l functions or Fourier transform and windowing techniques to determine the coefficients relating to two measured signals. Use of this invention is described in particular detail with respect to blood oximetry measurements.
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