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公开(公告)号：US20130229388A1
公开(公告)日：2013-09-05
申请号：US13865275
申请日：2013-04-18
Applicant: PIXART IMAGING INC.
Inventor： CHENG-NAN TSAI , TZUNG-MIN SU , CHIH-HSIN LIN
IPC: G06F3/042
CPC classification number: G06F3/042 , G06F3/0416 , G06F3/0428 , G06F2203/04104 , G06F2203/04108
Abstract: An apparatus and a method for acquiring object image of a pointer are provided. The apparatus is suitable for an optical touch system and is used for acquiring an object image of a pointer when the pointer interacts with a touch surface of the optical touch system. The apparatus includes an image sensor and a processing circuit. The image sensor is used for acquiring an image of the touch surface. When the pointer approaches the touch surface, the processing circuit compares at least a part of the information of a sensed image with a threshold value, so as to determine a comparison range. Then, the processing circuit determines another threshold value according to the image information in the comparison range. Afterwards, the processing circuit compares the image information in the comparison range with the aforementioned another threshold value, so as to acquire an object image of the pointer.
Abstract translation: 提供了一种用于获取指针的对象图像的装置和方法。 该装置适用于光学触摸系统，并且当指针与光学触摸系统的触摸面相互作用时用于获取指针的对象图像。 该装置包括图像传感器和处理电路。 图像传感器用于获取触摸表面的图像。 当指示器接近触摸表面时，处理电路将感测图像的信息的至少一部分与阈值进行比较，以便确定比较范围。 然后，处理电路根据比较范围内的图像信息来确定另一阈值。 之后，处理电路将比较范围内的图像信息与上述另一个阈值进行比较，以获取指针的对象图像。
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2.发明申请公开(公告)号：US20150253934A1
公开(公告)日：2015-09-10
申请号：US14615670
申请日：2015-02-06
Applicant: PIXART IMAGING INC.
Inventor： YU-CHIA LIN , CHUAN-CHING LIN , YU-HSIN LIN , HAN-PING CHENG , TZUNG-MIN SU , CHIH-HSIN LIN , HSIN-CHI CHENG , CHUN-SHENG LIN , YU-HSIANG HUANG , KUAN-HSU CHEN , CHUN-YI LU
IPC: G06F3/042
CPC classification number: G06F3/0428 , G06F3/0418
Abstract: The present disclosure provides an object detection method including: pre-storing a lookup table of touch reference values, wherein the lookup table of touch reference values records a plurality of touch reference values associated with image positions of a plurality of calibration object images formed in calibration images captured by a first image sensor; capturing a first image, wherein the first image has at least an object image corresponding to a pointer formed therein; generating a first light distribution curve according to the first image; defining a first detection region in the first light distribution curve; obtaining at least one touch reference value associated with the object image using the lookup table of touch reference values; comparing at least one brightness value within the first detection region of the first light distribution curve with the at least one touch reference value obtained.
Abstract translation: 本公开提供一种对象检测方法，包括：预存储触摸参考值的查找表，其中所述触摸参考值的查找表记录与校准中形成的多个校准对象图像的图像位置相关联的多个触摸参考值 由第一图像传感器拍摄的图像; 拍摄第一图像，其中所述第一图像至少具有与其中形成的指针相对应的对象图像; 根据第一图像生成第一光分布曲线; 在第一光分布曲线中限定第一检测区域; 使用所述触摸参考值的查找表获得与所述对象图像相关联的至少一个触摸参考值; 将第一光分布曲线的第一检测区域内的至少一个亮度值与所获得的至少一个触摸参考值进行比较。
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Patent Agency Ranking
公开(公告)号：US20150153904A1
公开(公告)日：2015-06-04
申请号：US14551742
申请日：2014-11-24
Applicant: PIXART IMAGING INC.
Inventor： HAN-PING CHENG , TZUNG-MIN SU , CHIH-HSIN LIN
CPC classification number: G06F3/0421 , G06F3/0418 , G06K9/00389
Abstract: There is provided a processing method of an object image for an optical touch system includes the steps of: capturing, using a first image sensor, a first image frame containing a first object image; capturing, using a second image sensor, a second image frame containing a second object image; generating a polygon image according to the first image frame and the second image frame; and determining a short axis of the polygon image and at least one object information accordingly.
Abstract translation: 提供了一种用于光学触摸系统的对象图像的处理方法，包括以下步骤：使用第一图像传感器捕获包含第一对象图像的第一图像帧; 使用第二图像传感器捕获包含第二对象图像的第二图像帧; 根据第一图像帧和第二图像帧生成多边形图像; 并且相应地确定多边形图像的短轴和至少一个对象信息。
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公开(公告)号：US20130271429A1
公开(公告)日：2013-10-17
申请号：US13912192
申请日：2013-06-06
Applicant: Pixart Imaging Inc.
Inventor： TZUNG-MIN SU , CHIH-HSIN LIN , MING-TSAN KAO
IPC: G06F3/042
CPC classification number: G06F3/0421 , G06F3/0416 , G06F3/0428 , G06F2203/04104 , G06F2203/04106
Abstract: A touch-control system adapted to be used with a plurality of pointers is provided. The touch-control system includes a touch-control panel, a first pointer sensing module, a second pointer sensing module and a processing circuit. The first pointer sensing module is configured to sense a first set of image information of the pointers and accordingly calculate a first candidate coordinate group of the pointers. The second pointer sensing module is configured to sense a second set of image information of the pointers. The processing circuit is electrically coupled to the first and second pointer sensing modules and configured to select, according to the second set of image information, two or more coordinate positions in the first candidate coordinate group to as actual coordinate positions of the pointers.
Abstract translation: 提供一种适于与多个指针一起使用的触摸控制系统。 触摸控制系统包括触摸控制面板，第一指针感测模块，第二指针感测模块和处理电路。 第一指针感测模块被配置为感测指针的第一组图像信息，并且因此计算指针的第一候选坐标组。 第二指针感测模块被配置为感测指针的第二组图像信息。 处理电路电耦合到第一和第二指示器感测模块，并且被配置为根据第二组图像信息将第一候选坐标组中的两个或更多个坐标位置选择为指针的实际坐标位置。
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公开(公告)号：US20240386741A1
公开(公告)日：2024-11-21
申请号：US18650129
申请日：2024-04-30
Applicant: PixArt Imaging Inc.
Inventor： YU-JU LEE , TZUNG-MIN SU
Abstract: There is provided a finger detection device including a light source, a light sensor and a processor. The light sensor respectively captures a first image frame and a second image frame corresponding to turning on and turning off the light source. The processor calculates a differential image frame of the first image frame and the second image frame, determines a covered region in the differential image frame and identifies whether the covered region is a finger region or not. If the covered region is not the finger region, the processor controls the light sensor to acquire new image frames. If the covered region is the finger region, the processor determines different windows of interest in the finger region.
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公开(公告)号：US20200242226A1
公开(公告)日：2020-07-30
申请号：US16850753
申请日：2020-04-16
Applicant: PixArt Imaging Inc.
Inventor： REN-HAU GU , CHIH-HSIN LIN , TZUNG-MIN SU , YUNG-CHANG LIN , JIAN-CHENG LIAO , CHUN-CHIH CHEN
Abstract: A wearable device including a skin sensor and a processor is provided. The processor is configured to receive an authentication data for authenticating a user when a wearing state of the wearable device is adjacent to a skin surface of the user, execute a predetermined function in response to a request when the authentication data matches a pre-stored data and the skin sensor determines that the wearable device does not leave the skin surface after the authentication data is received, and reject or ignore the request when the skin sensor determines that the wearable device leaves the skin surface before the predetermined function is executed.
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公开(公告)号：US20140225868A1
公开(公告)日：2014-08-14
申请号：US14040201
申请日：2013-09-27
Applicant: Pixart Imaging Inc.
Inventor： YU-HSIANG HUANG , CHUN-YI LU , TZUNG-MIN SU , CHIH-HSIN LIN , JIA-HONG HUANG
CPC classification number: G02B13/18 , G02B19/0014 , G02B19/0061 , G06F3/0428
Abstract: An optical lens is configured in front of an image-capturing lens of an image-capturing device. A light-emitting unit of the image-capturing device emits a light beam. The optical lens includes a pair of peripheral compensation portions and a central diverging portion. Each peripheral compensation portion has a first convex surface and a first concave surface arranged opposite to the first convex surface. The central diverging portion is arranged between the peripheral compensation portions, and has a second concave surface and an oppositely arranged light incident surface. The second concave surface is arranged between the first convex surfaces. The light incident surface is arranged between the first concave surfaces. The optical axis of the light beam sequentially aligns with the light incident surface and the second concave surface. The light rays of the light beam pass through the first concave surface and the first convex surface in sequence.
Abstract translation: 光学透镜配置在图像拍摄装置的图像拍摄透镜的前方。 图像捕获装置的发光单元发射光束。 光学透镜包括一对外围补偿部分和中心发散部分。 每个外围补偿部分具有与第一凸面相对布置的第一凸面和第一凹面。 中心发散部分配置在周边补偿部之间，具有第二凹面和相对配置的光入射面。 第二凹面设置在第一凸面之间。 光入射面设置在第一凹面之间。 光束的光轴顺序地与光入射面和第二凹面对准。 光束的光线依次穿过第一凹面和第一凸面。
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