公开(公告)号：US20150018654A1

公开(公告)日：2015-01-15

申请号：US13937949

申请日：2013-07-09

Applicant: Xerox Corporation

Inventor： Lalit Keshav MESTHA ,  Barry P. MANDEL ,  Peter Johan NYSTROM

IPC: A61B5/1455 ,  A61B5/145 ,  A61B5/00

CPC classification number: A61B5/14551 ,  A61B5/0022 ,  A61B5/14546 ,  A61B5/6831 ,  A61B5/7282 ,  A61B5/742

Abstract: What is disclosed is a system and method for monitoring a subject of interest for fractional blood oxygen saturation using an apparatus that can be comfortably worn by the subject around an area of exposed skin where a photoplethysmographic (PPG) signal can be registered. In one embodiment, the apparatus is a reflective or transmissive wrist-worn device with emitter/detector pairs fixed to an inner side of a band with at least three illuminators, each emitting source light at a different wavelength band. Each photodetector comprises sensors that are sensitive to a wavelength band of a respective illuminator. Each photodetector measures an intensity of sensed light emitted by a respective illuminator. The signal obtained by the sensors comprises a continuous PPG signal. The continuous PPG signal analyzed for fractional blood oxygen saturation levels and communicated to a remote device. Various embodiments are disclosed.

Abstract translation: 所公开的是使用可以被注册在光体积描记术（PPM）信号的暴露皮肤区域周围的受试者舒适佩戴的装置来监测分数血氧饱和度的感兴趣的受试者的系统和方法。 在一个实施例中，该装置是具有发射器/检测器对的反射或透射腕部装置，其具有固定到具有至少三个照明器的带的内侧，每个照射器发射不同波长带的光源。 每个光电检测器包括对相应照明器的波长带敏感的传感器。 每个光电检测器测量由相应照明器发射的感测光的强度。 由传感器获得的信号包括连续的PPG信号。 连续的PPG信号分析了血氧饱和度的分数，并传达给远程设备。 公开了各种实施例。

公开(公告)号：US20140240511A1

公开(公告)日：2014-08-28

申请号：US13775665

申请日：2013-02-25

Applicant: XEROX CORPORATION

Inventor： Peter Johan NYSTROM ,  Lalit Keshav MESTHA

IPC: H04N5/232

CPC classification number: H04N5/33 ,  H04N5/23212

Abstract: What is disclosed is a system and method for focusing a camera on an object of interest in a scene. In one embodiment, an illuminator comprising a light source which emits light at a desired wavelength band is aimed at an object in a scene. The source light beam impacts the object at an aim point. A spectral sensing device senses a reflection of the projected light beam off the object. In response to the reflected light beam having been detected by the spectral sensing device, a location of the object in the scene is determined and communicated to a video acquisition system. A focus of the video system is changed so that the object is brought into the camera's field of view. The object can be tracked as it moves about the scene. A spectral image of the object can be captured and analyzed for the object's material composition.

Abstract translation: 公开的是用于将相机聚焦在场景中感兴趣的对象上的系统和方法。 在一个实施例中，包括以期望波长带发光的光源的照明器瞄准场景中的物体。 源光束在目标点处撞击物体。 光谱感测装置感测投影光束离开物体的反射。 响应于由光谱感测装置检测到的反射光束，确定场景中物体的位置并将其传送到视频采集系统。 改变视频系统的焦点，使对象进入摄像机的视野。 当物体在场景附近移动时，可以跟踪对象。 物体的光谱图像可以被捕获并分析对象的材质组成。

公开(公告)号：US20150018693A1

公开(公告)日：2015-01-15

申请号：US13937740

申请日：2013-07-09

Applicant: XEROX CORPORATION

Inventor： Lalit Keshav MESTHA ,  Survi KYAL ,  Barry P. MANDEL ,  Peter Johan NYSTROM

IPC: A61B5/00 ,  A61B5/024

CPC classification number: A61B5/7282 ,  A61B5/0022 ,  A61B5/0024 ,  A61B5/02427 ,  A61B5/6831 ,  A61B5/746

Abstract: What is disclosed is a method for monitoring a subject for cardiac arrhythmia such as atrial fibrillation using an apparatus that can be comfortably worn by the subject around an area of exposed skin where a photoplethysmographic (PPG) signal can be registered. In one embodiment, the apparatus is a reflective or transmissive wrist-worn device with emitter/detector pairs fixed to an inner side of a band with at least one illuminator emitting source light at a specified wavelength band. The illuminator is paired to a respective photodetector comprising one or more sensors that are sensitive to a wavelength band of its paired illuminator. The photodetector measures intensity of sensed light emitted by a respective illuminator. The signal obtained by the sensors comprises a continuous PPG signal. The continuous PPG signal analyzed for peak-to-peak pulse points from which the existence of cardiac arrhythmia such as atrial fibrillation event can be determined.

Abstract translation: 所公开的是用于使用可以被注射在光体积描记术（PPM）信号的暴露皮肤区域周围的受试者舒适佩戴的装置来监测心律失常的受试者的心律失常的方法，例如心房颤动。 在一个实施例中，该装置是具有发射器/检测器对的反射或透射腕部装置，其固定到带的内侧，其中至少一个照明器发射指定波长带的光源。 照明器与包括对其成对照明器的波长带敏感的一个或多个传感器的相应光电检测器配对。 光电检测器测量由相应照明器发射的感测光的强度。 由传感器获得的信号包括连续的PPG信号。 分析连续的PPG信号，从中可以确定心律失常如心房颤动事件的存在的峰 - 峰脉冲点。

公开(公告)号：US20150018647A1

公开(公告)日：2015-01-15

申请号：US13937782

申请日：2013-07-09

Applicant: Xerox Corporation

Inventor： Barry P. MANDEL ,  Peter Johan NYSTROM ,  Lalit Keshav MESTHA

IPC: A61B5/1455 ,  A61B5/00

CPC classification number: A61B5/14552 ,  A61B5/0022 ,  A61B5/681 ,  A61B5/6814 ,  A61B5/6824 ,  A61B5/6825 ,  A61B5/6826 ,  A61B5/6828 ,  A61B5/6829 ,  A61B5/6831

Abstract: What is disclosed is a system and method for monitoring a subject of interest for functional blood oxygen saturation using an apparatus that can be comfortably worn by the subject around an area of exposed skin where a photoplethysmographic (PPG) signal can be registered. In one embodiment, the apparatus is a reflective or transmissive wrist-worn device with emitter/detector pairs fixed to an inner side of a band with at least two illuminators, each emitting source light at a different wavelength band. Each photodetector comprises sensors that are sensitive to a wavelength band of its respective illuminator. Each photodetector measures an intensity of sensed light emitted by a respective illuminator. The signal obtained by the sensors comprises a continuous PPG signal. The continuous PPG signal analyzed for functional blood oxygen saturation levels and communicated to a remote device. Various embodiments are disclosed.

Abstract translation: 所公开的是使用能够被注册的光电容积描记（PPG）信号的暴露皮肤区域周围的受试者舒适佩戴的装置来监测功能性血氧饱和度的感兴趣的受试者的系统和方法。 在一个实施例中，该装置是具有发射器/检测器对的反射或透射腕部装置，其具有固定到具有至少两个照明器的带的内侧，每个照射器发射不同波长带的光源。 每个光电检测器包括对其相​​应照明器的波长带敏感的传感器。 每个光电检测器测量由相应照明器发射的感测光的强度。 由传感器获得的信号包括连续的PPG信号。 持续的PPG信号分析了功能性血氧饱和度水平，并传达给远程设备。 公开了各种实施例。