Optical Detector Patents (Class 345/166)
  • Patent number: 11055548
    Abstract: There is provided an optical sensor including a pixel matrix and a readout circuit. The pixel matrix includes multiple pixels arranged in a matrix, and each of the multiple pixels outputs temporal difference pixel data. The readout circuit sequentially reads the pixel matrix using a readout block, and performs the hybrid difference calculation on the temporal difference pixel data of pixels within the readout block. Accordingly, the output of the readout circuit is the data accomplishing temporal difference and spatial difference.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 6, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Ren-Chieh Liu, Yi-Hsien Ko, Han-Chi Liu
  • Patent number: 11032884
    Abstract: A method for making a light-emitting diode (LED) emitter module includes providing a substrate and providing two or more groups of LED dies disposed on the substrate. Each group has one or more LED dies, and each of the LED dies is coupled to an electrical contact and electrical paths are configured for feeding separate electrical currents to the groups of LED dies. The method also includes determining information associating a plurality output light colors with a corresponding plurality of combinations of electrical currents, each combination specifying a plurality of electrical current values, each electrical current value being associated with an LED die from one of the two or more groups of LED dies. The method also includes storing the information in the memory device, and providing a circuit for accessing the information in a memory device.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 8, 2021
    Assignee: LedEngin, Inc.
    Inventors: Xiantao Yan, Kachun Lee, David Tahmassebi
  • Patent number: 10945640
    Abstract: A method of detecting, measuring, logging, and tracking a user's consumption of liquid through an electronic wearable on a person's wrist, hand, or other extremity used for consuming beverages is described. In preferred embodiments, the electronic wearable can detect individual sips, the final sip of a beverage, and the type of container the beverage is being consumed from.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: March 16, 2021
    Inventor: Bradley Jaeger
  • Patent number: 10928931
    Abstract: There is provided a navigation device including an image sensor and a processing unit. The image sensor is configured to capture reflected light of a work surface with a low-speed period to generate image frames, wherein the image sensor captures a pair of image frames in each low-speed period. The processing unit is configured to calculate acceleration according to the pair of image frames to accordingly identify whether to adjust the low-speed period to a high-speed period.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: February 23, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Joon-Chok Lee, Kevin Len-Li Lim
  • Patent number: 10901527
    Abstract: Disclosed is an optical navigation system, which comprises: a main control circuit; an activating device, coupled to the main control circuit; and an optical sensor, coupled to the main control circuit and the activating device. The main control circuit controls the activating device to transit from a first standby mode to a first active mode when the optical sensor enters a second standby mode. The activating device generates an activating command to transit the optical sensor from the second standby mode to a second activate mode corresponding to a specific action, when the activating device is in the first active mode. By this way, the optical sensor can be activated via another device rather than the optical data sensed by itself, thus the power consumption can be reduced.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: January 26, 2021
    Assignee: PixArt Imaging Inc.
    Inventors: Eugene Soon Tat Lim, Keng Yeen Lye
  • Patent number: 10866714
    Abstract: A user terminal device and a method for displaying on a user terminal device. The method includes displaying a first screen, detecting a user interaction to rotate the first screen while the first screen is displayed, and in response to the detected user interaction, displaying the first screen in a rotated state in a clockwise or counterclockwise direction at a predetermined angle and displaying a second screen related to the rotated first screen on at least one of a plurality of corner areas of the user terminal device.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 15, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-kyung Kim, Hae-yoon Park, Yong-yeon Lee, Ji-yeon Kwak, Yeo-jun Yoon
  • Patent number: 10824248
    Abstract: A mouse includes a housing, a button, and a slider. The button is pivotally connected to the housing. The button includes a first abutting portion. The slider is slidably engaged with the housing. The slider includes a second abutting portion. When the slider is located at a first position relative to the housing, the first abutting portion abuts against the second abutting portion. When the slider is located at a second position relative to the housing, the first abutting portion is separated from the second abutting portion.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: November 3, 2020
    Assignee: Chicony Electronics Co., Ltd.
    Inventor: Chin-Sheng Liu
  • Patent number: 10819896
    Abstract: An image sensing system control method, comprises: (a) calculating a first motion delta between a first image frame and a second image frame following the first image frame by the image sensor; (b) calculating a first output motion delta according to a first time difference, a second time difference and the first motion delta by the image sensor if the image sensor receives a first polling from the control circuit, wherein the first time difference means a time difference between a time of the first polling and a time of the first image frame, and the second time difference means a time difference between a time of the first polling and a time of the second image frame; and (c) outputting the first output motion delta to the control circuit from the image sensor.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: October 27, 2020
    Assignee: PixArt Imaging Inc.
    Inventor: Zi Hao Tan
  • Patent number: 10775908
    Abstract: The present invention provides a luminous scroll module applied to a mouse, including: a scroll, an inner wheel, and a luminous module. The inner wheel is arranged in a groove of the scroll, and the scroll is capable of rotating relative to the inner wheel. The luminous module is arranged in the inner wheel. A luminous unit of the luminous module is configured to emit a light beam, and the light beam passes through a light source opening of the inner wheel to the scroll.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 15, 2020
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Jia-Hung Lin, A-Ming Chang
  • Patent number: 10719941
    Abstract: Disclosed is a system which uses one or more camera units with embedded processors to measure the relative translation and/or rotation between different members on an aerial device. Image data from each unit is processed and transmitted processing to the position control system of the aerial device, and used to determine the position of an aerial element of the device.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: July 21, 2020
    Assignee: Altec Industries, Inc.
    Inventors: Aaron Beck, Michael A. Fleming
  • Patent number: 10719144
    Abstract: Devices and methods are disclosed for determining relative motion. In one implementation, an interferometer is provided. The interferometer may include a body, a light source configured to project a coherent light to an opposing surface, a plurality of pairs of light detectors configured to convert reflections of the coherent light into photocurrents, and a processor. The processor may be configured to detect changes in the photocurrents, wherein a first change in the photocurrents, which occurs in response to a relative motion between the body and the opposing surface, represents a motion signal, and a second change in the photocurrents represents a noise signal. The processor may also determine the relative motion between the body and the opposing surface based on the first change in the photocurrents when a ratio between a power of the motion signal and a power of the noise signal is below about 10.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: July 21, 2020
    Assignee: OTM TECHNOLOGIES LTD.
    Inventors: Uri Kinrot, Opher Kinrot, Eli Billauer
  • Patent number: 10708501
    Abstract: An electronic device comprises an image sensor that captures a sequence of image frames of a scene. The electronic device includes circuitry that generates an optical flow map for a current frame of the sequence of image frames received from the image sensor. The circuitry determines a plurality of likelihood-of-prominence values for the plurality of regions, based on the generated optical flow map and a motion vector that maps to a direction of motion of the electronic device. The circuitry is configured to detect at least a first region that has a direction of motion similar to that of the electronic device, as a region-of-prominence, based on the determined plurality of likelihood-of-prominence values for the plurality of regions. The circuitry is configured to track the desired object in the sequence of image frames based on the detection of the first region of the current frame as the region-of-prominence.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: July 7, 2020
    Assignee: SONY CORPORATION
    Inventor: Junji Shimada
  • Patent number: 10698496
    Abstract: A system configured for tracking a human hand in an augmented reality environment may comprise a distancing device, one or more physical processors, and/or other components. The distancing device may be configured to generate output signals conveying position information. The position information may include positions of surfaces of real-world objects, including surfaces of a human hand. Feature positions of one or more hand features of the hand may be determined through iterative operations of determining estimated feature positions of individual hand features from estimated feature position of other ones of the hand features.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: June 30, 2020
    Assignee: Meta View, Inc.
    Inventor: Yishai Gribetz
  • Patent number: 10672815
    Abstract: A sensor device is disclosed. In an embodiment, the sensor device includes a carrier having a plane carrier surface, a plurality of photodetectors arranged on the carrier surface, each photodetector including a photosensitive sensor area and a lens arrangement arranged opposite the sensor areas, wherein the lens arrangement includes an optical axis, wherein the lens arrangement is configured to image electromagnetic radiation onto the sensor areas, wherein the plurality of photodetectors comprise at least one first photodetector having a first sensor area, the first sensor area comprises at least one property which differs from a property of a second sensor area of a second photodetector of the plurality of photodetectors, and wherein the second photodetector is arranged closer to the optical axis than the at least one first photodetector in order to reduce an optical imaging aberration of the lens arrangement.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 2, 2020
    Assignee: OSRAM OLED GMBH
    Inventors: Karsten Auen, Andreas Wojcik, Hubert Halbritter, Tim Böscke
  • Patent number: 10613650
    Abstract: A navigation device including an image sensor, a processor and a memory is provided. The memory stores a lookup table of a plurality of moving speeds each corresponding to one frame period. The image sensor captures image frames successively. The processor calculates a current speed according to a current image frame and a previous image frame, reads a frame period from the lookup table according to the calculated current speed, wherein the read frame period is multiplied by a ratio, which is smaller than 1, when an acceleration is confirmed by the processor according to the captured image frames.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: April 7, 2020
    Assignee: PIXART IMAGING INC.
    Inventors: Zi-Hao Tan, Kevin Len-Li Lim
  • Patent number: 10592007
    Abstract: In certain embodiments, an input device includes a housing, a processor disposed in the housing, and an image sensor to track a movement of the input device with respect to an underlying surface. The image sensor includes a pixel array and operates in two modes of operation including a first mode of operation where the processor causes the image sensor to utilize a first plurality of pixels in the pixel array when tracking the movement of the input device or a second mode of operation where the processor causes the image sensor to utilize a second plurality of pixels in the pixel array when tracking the movement of the input device, where the second plurality of pixels has fewer pixels than the first plurality of pixels.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 17, 2020
    Assignee: Logitech Europe S.A.
    Inventors: François Morier, Olivier Theytaz
  • Patent number: 10506226
    Abstract: Display device ON/OFF detection methods and apparatus are disclosed. Example display activity detectors disclosed herein are to extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device Disclosed example display activity detectors are also to compute a distance metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames. Disclosed example display activity detectors are further to compare the distance metric to a threshold to determine whether the monitored media device is ON or OFF.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: December 10, 2019
    Assignee: The Nielsen Company (US), LLC
    Inventors: Christen V. Nielsen, Dan Nelson
  • Patent number: 10477090
    Abstract: A wearable device mountable on a head, the wearable device comprising: at least one imager configured to capture scenery in front of a user; and at least one controller configured to detect a shield in a captured image by the imager, wherein the at least one controller is further configured to execute acquisition of the captured image upon movement of the shield from an inside to an outside of an imaging range of the imager.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: November 12, 2019
    Assignee: KYOCERA CORPORATION
    Inventors: Tomohiro Sudou, Saya Miura
  • Patent number: 10377042
    Abstract: Various systems and methods for providing a vision-based robot control system are provided herein. A vision-based robot control system comprises a camera system interface to receive image data from a camera system; a trigger detection unit to determine a triggering action from the image data; and a transceiver to initiate a robot operation associated with the triggering action.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 13, 2019
    Assignee: Intel Corporation
    Inventor: Glen J. Anderson
  • Patent number: 10331244
    Abstract: A navigation device including an image sensor, a processor and a memory is provided. The memory stores a lookup table of a plurality of moving speeds each corresponding to one frame period. The image sensor captures image frames successively. The processor calculates a current speed according to a current image frame and a previous image frame, reads a frame period from the lookup table according to the calculated current speed, wherein the read frame period is multiplied by a ratio, which is smaller than 1, when an acceleration is confirmed by the processor according to the captured image frames.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: June 25, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Zi-Hao Tan, Kevin Len-Li Lim
  • Patent number: 10299725
    Abstract: Wearable devices are described herein including at least two photodetectors and a mount configured to mount the at least two photodetectors to an external surface of a wearer. The at least two photodetectors are configured to detect alignment between the wearable device and a target on or in the body of the wearer (e.g., to detect the location of vasculature within the body of the wearer relative to the at least two photodetectors). Alignment of the at least two photodetectors relative to the target could enable detection of one or more physiological properties of the wearer. For example, the wearable device could include a sensor configured to detect a property of the target when the sensor is above the target, and alignment of the target relative to the at least two photodetectors could include the sensor being located above the target.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: May 28, 2019
    Assignee: Verily Life Sciences LLC
    Inventors: Russell Norman Mirov, Andrew Homyk, Mark West Askew, Jason Donald Thompson
  • Patent number: 10268851
    Abstract: A method and arrangement for interaction between a data processing device and a mobile device for the activation of a software action in the data processing device, including the steps: representation of request information on a display unit of the data processing device, acquisition of the request information with an optical sensor of the mobile device, generation of reply information in or via the mobile device, and representation of the reply information on a display of the mobile device. To simplify transmission of the reply information to the data processing device and to increase the security of the data transmission, the reply information is read using an optical reading device coupled to the data processing device and transmitted to the data processing device for the automatic activation of the software action, wherein the data processing device is not connected to the data network at least during data transmission.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 23, 2019
    Assignee: SCHNEIDER ELECTRIC INDUSTRIES SAS
    Inventor: Michael Patri
  • Patent number: 10241593
    Abstract: An optical processing apparatus and a light source luminance adjustment method adapted to detect a rotational displacement and a pressing state are provided. The optical processing apparatus includes a light source unit, a processing unit, and an image sensing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit provides a beam of light. The processing unit defines a frame rate, defines a plurality of time instants within a time interval, and sets the light source unit to a luminance value at each of the time instants. A length of the time interval is shorter than the reciprocal of the frame rate. The luminance values are different and are within a range. The image sensing unit captures an image by an exposure time length at each of the time instants, wherein the exposure time lengths are the same.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: March 26, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Chun-Wei Chen, Ching-Lin Chung
  • Patent number: 10189133
    Abstract: A measurement, calibration and compensation system for machine tool includes a first positioning base; two first speckle image sensors for sensing speckle positions of an object holding unit at a first XY plane and a first XZ plane of the first positioning base before and after the machine tool is started for machining; a second positioning base; two second speckle image sensors for sensing speckle positions of a cutter holding unit at a second XY plane and a second YZ plane of the second positioning base before and after the machine tool is started for machining. Thus, the thermal expansion at all axes of the machine tool can be measured in a simplified and low-cost way, and the absolute positioning coordinates of all axes of the machine tool can be calibrated in real time to avoid reduced positioning accuracy due to the thermal expansion of the multi-axis machine tool.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: January 29, 2019
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yi-Yuh Hwang, Wei-Guo Chang, Li-Chung Liu
  • Patent number: 10142802
    Abstract: Methods and systems of communication using a mobile device include communicating with other mobile devices over an initial communication channel, detecting a first motion of the mobile device moving from a first position to a second position, establishing a second communication channel with the other mobile devices in response to the detected first motion, and communicating with the other mobile devices over the second communication channel. In an example, the initial communication may be a half-duplex communication channel, and the second communication channel may be a full-duplex communication channel. In another example, the initial communication may be a full-duplex communication channel, and the second communication channel may be a half-duplex communication channel.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: November 27, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Mark Aaron Lindner, Shobha Subbaramoo
  • Patent number: 10120460
    Abstract: An optical computer mouse senses movement by detecting the variations in intensity of reflected primary colors from a surface over which the mouse is moved. The surface is illuminated by a plurality of colors of light. An image sensor is formed from an array of photodiodes covered with a color filter array that matches the primary colors of the lights and is used to detect intensity of reflected light of the primary colors from the surface on which the optical computer mouse rests. Variations in the intensity of at least one of the primary colors of reflected light are used to determine movement by the computer mouse. Both the intensity of the individual lights and sensitivity of the array of photo diodes are controlled by a controller.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 6, 2018
    Inventor: Wen-Chieh Geoffrey Lee
  • Patent number: 10021381
    Abstract: A method of camera pose estimation is provided that includes capturing a model image of a scene at a canonical camera pose, generating an image library from warped images of the model image and the model image, wherein each warped image is a transformation of the model image at a different pre-determined camera pose, capturing an image of the scene as a user moves the camera, reporting the current camera pose as a camera pose of the image when the image is acceptable, conditionally adding the first image to the image library when the first image is acceptable, and re-initializing the current camera pose to a camera pose selected from the image library when the first image is not acceptable.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: July 10, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vinay Sharma, Peter Charles Barnum
  • Patent number: 9934418
    Abstract: An optical sensor for imaging an input object, such as a fingerprint, on a sensing region of a display is disclosed. The sensor includes a transparent substrate having a first side and a second side opposite the first side. An array of detector elements is positioned above the first side of the transparent substrate and an angle limiting reflector is positioned below the second side of the transparent substrate. The angle limiting reflector is configured to reflect light incident on the angle limiting reflector within a limited acceptance angle towards the array detector elements.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: April 3, 2018
    Assignee: Synaptics Incorporated
    Inventors: Marek Mienko, Patrick Smith, Arash Akhavan Fomani, Jeffrey A. Small
  • Patent number: 9904381
    Abstract: A method capable of automatically switching operation modes is applied to a multi-functional mouse device which has a first operation mode and a second operation mode. The multi-functional mouse device can move over a plane formed by a first axis and a second axis perpendicular to each other, and includes a coordinate positioning unit suitable for the second operation mode. The method includes detecting whether the coordinate positioning unit generates a first axial signal, detecting whether the coordinate positioning unit generates a second axial signal within a first predetermined period, determining whether continued time of the first axial signal and the second axial signal exceed over a second predetermined period, and determining whether the multi-functional mouse device is switched from the first operation mode to the second operation mode according to a determination result.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: February 27, 2018
    Assignee: BenQ Corporation
    Inventors: Shuo-Yen Ho, Ming-Sheng Tai
  • Patent number: 9898110
    Abstract: An embodiment of the present disclosure provides a mouse pad. The mouse pad includes a substrate and storage module. The substrate includes a first surface. A mouse device can move on the first surface. The storage module is located in the substrate for surface parameters of the first surface of the mouse pad, operation parameters or calibration parameters of the mouse device. When the mouse device moves on the first surface, the mouse device executes an optimization process to generate the calibration parameters according to the surface parameters, and the mouse device transmits the calibration parameters to the mouse pad.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: February 20, 2018
    Assignees: DEXIN ELECTRONIC LTD., DEXIN CORPORATION
    Inventor: Hung-Jen Chou
  • Patent number: 9817487
    Abstract: This is directed to animating transitions in a user interface as the orientation of the user interface changes. An electronic device can display a user interface in any suitable orientation, including for example in portrait and landscape modes (e.g., based on the orientation of the display). To provide a resource efficient and aesthetically pleasing transition, the electronic device can pre-render the interface in the final orientation, and define an animation by cross-fading the interface between the initial and final interfaces. In some embodiments, the electronic device can identify distinct regions of the interface, and define separate animations for each region. The separate animations can be overlaid and displayed simultaneously to provide a uniform animated transition between the initial and final interfaces.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: November 14, 2017
    Assignee: APPLE INC.
    Inventors: Joshua Shaffer, Bas Ording
  • Patent number: 9733727
    Abstract: A surface navigation device for a computer or similar graphical display and methods for implementing its operation. The device moves sensitively and precisely over a surface such as a desktop and operator generated changes in its position relative to targetable objects on that desktop arranged about the circumference of a pseudo-circle are described in terms of a lumped motion vector. The motion vector is decomposed into a translational and rotational part by metrical and topological methods. The device communicates each part of the decomposed motion quickly and accurately to a computer screen or other display where it may implement the motion of a cursor or it may be used to manipulate objects having a 3D character by providing them with translational and rotational motions. The rotational parameter generated by the device may also be used independently to trigger some computer action.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 15, 2017
    Inventor: Wen-Chieh Geoffrey Lee
  • Patent number: 9727160
    Abstract: There is provided a displacement detection device including a light source, an image sensor and a processing unit. The light source provides light to a finger with a light source parameter. The image sensor receives reflected light from the finger, outputs valid images when the light source is being turned on and outputs dark images when the light source is being turned off. The processing unit determines a contact status according to one of the dark images and one of the valid images, and calculates a displacement according to two of the valid images to accordingly adjust the light source parameter.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: August 8, 2017
    Assignee: PixArt Imaging Inc.
    Inventors: Ren-Hau Gu, Yu-Hao Huang, Hsin-Chia Chen, Yen-Min Chang
  • Patent number: 9658701
    Abstract: Embodiments of the invention are directed to input devices configured for use with computing devices. The present invention relates to input devices configured with a plurality of sensors configured to determine the displacement and position of the input device. Tracking of the input device may be switched from an optical sensor to an inertial sensor based on the speed of movement of the input device or based on the input device detecting that loss of tracking has occurred. In some embodiments, a gyroscope may be configured to modify data from the inertial sensor module to correct for fictitious accelerations generated when the input device is rotated.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: May 23, 2017
    Assignee: Logitech Europe S.A.
    Inventors: Arash Salarian, Nicolas Chauvin, David Tarongi Vanrell
  • Patent number: 9635162
    Abstract: A mobile communications device includes an antenna, a navigation pad and a signal processor. The antenna, navigation pad, and signal processor cooperate to encode and transmit motion signals from the navigation pad to a computer so that the mobile communications device functions as a pointing device for the computer.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: April 25, 2017
    Assignee: STMicroelectronics (Research & Development) Limited
    Inventor: Jeffrey Raynor
  • Patent number: 9516236
    Abstract: With an image processing method, in response to a control signal from an external device, main imaging is performed by using a predetermined main imaging parameter, main image processing is performed on the acquired image data, a result is sent to a control device, and, during the main image processing, sub-imaging is performed by using at least one sub-imaging parameter, which is different from the main imaging parameter. Sub-image processing is performed on the image data acquired by the sub-imaging, and the result is extracted. If the extracted sub-image processing result falls within a predetermined processing result criteria range, updating is performed by setting, as a new main imaging parameter, the sub-imaging parameter that has generated the processing result.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: December 6, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Genki Cho
  • Patent number: 9444987
    Abstract: An interactive imaging system includes an image system and a remote controller. The image system includes at least one reference beacon, a receiving unit and a host. The at least one reference beacon emits light in an emission pattern. The receiving unit is configured to receive a packet data. The host controls an enable time of the at least one reference beacon according to the packet data. The remote controller includes an image sensor and a transmission unit. The image sensor captures the light emitted from the at least one reference beacon at a sampling period. The transmission unit sends the packet data corresponding to the sampling period of the image sensor.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: September 13, 2016
    Assignee: PIXART IMAGING INC
    Inventors: Chia-Cheun Liang, Chao-Chien Huang, Chi-Yang Huang, Wen-Yu Yang, Hung-Yu Lee
  • Patent number: 9367148
    Abstract: A method for selectively switching a frame rate of a mouse includes: setting a plurality of acceleration thresholds respectively corresponding to a plurality of frame rates at which the mouse is operated; operating the mouse at a first frame rate of the plurality of frame rates; determining a velocity of the mouse according to a difference between a first frame captured by the mouse at the first frame rate and a second frame following the first frame captured by the mouse at the first frame rate; determining an acceleration of the mouse between the first captured frame and second captured frame according to the velocity of the first frame, the velocity of the second frame, and the frame rate; comparing the acceleration with the plurality of thresholds; and directly switching the frame rate of the mouse to a frame rate which corresponds to the determined threshold.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: June 14, 2016
    Assignee: PixArt Imaging (Penang) SDN. BHD.
    Inventors: Joon Chok Lee, Kevin Len Li Lim
  • Patent number: 9369751
    Abstract: A hand-held pointing device includes a main body, a processing circuit, a light emitting device and two image sensing devices. The main body has a first surface and a second surface for lying on an operating surface. The two image sensing devices are disposed in the main body and configured to sense first and second images through first and second transparent areas thereof, respectively. The light emitting device, disposed in the main body, is configured to emit a light source through the second transparent area. The processing circuit is configured to determine and operate the hand-held pointing device in a remote controller mode or a mouse mode according to whether the first image contains an image of a reference light source and/or the second image contains an image of the operating surface reflecting the light source. An operation for a hand-held pointing device is also provided.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: June 14, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Chia-Cheun Liang, Chi-Yang Huang, Chih-Yen Wu, Wen-Yu Yang
  • Patent number: 9354717
    Abstract: There is provided an optical navigation device including at least one light source, an image sensor and a processing unit. The light source illuminates a work surface in a first brightness value and a second brightness value. The image sensor receives reflected light from the work surface and outputs a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value. The processing unit calculates a differential image of the first image frame and the second image frame and identifies an operating state according to the differential image.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: May 31, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Yu-Hao Huang, Ren-Hau Gu, Hsin-Chia Chen, Ming-Tsan Kao
  • Patent number: 9342158
    Abstract: A method for making a lower frame rate of an optical navigation sensor mimic a higher frame rate of the optical navigation sensor includes: receiving a motion delta of the optical navigation sensor at the lower frame rate; dividing the motion delta into a smaller number of parts; dividing a time period of the lower frame rate to generate a time threshold which is shorter than the time period of the lower frame rate; receiving a clock signal for updating a counter; and outputting a first part of the delta when the counter reaches the time threshold.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 17, 2016
    Assignee: PixArt Imaging (Penang) SDN. BHD.
    Inventors: Zi Hao Tan, Joon Chok Lee
  • Patent number: 9310897
    Abstract: There is provided a displacement detection device including a light source, an image sensor and a control and processing unit. The light source is configured to illuminate a work surface. The image sensor is configured to receive reflected light from the work surface. The control and processing unit is configured to adjust a block size of comparison blocks according to a quality parameter.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: April 12, 2016
    Assignee: Pixart Imaging Inc.
    Inventors: Chun-Wei Chen, Ren-Hau Gu, Shih-Wei Kuo
  • Patent number: 9310984
    Abstract: A method is provided of controlling a 3D individual object on a map by displaying a 3D map image including a plurality of 3D individual objects on a first display area, selecting at least one 3D individual object, obtaining detailed information of the selected 3D individual object from a memory and displaying the detailed information.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 12, 2016
    Assignee: LG Electronics Inc.
    Inventor: Jong-Hwan Kim
  • Patent number: 9297750
    Abstract: In some embodiments, an apparatus includes a housing and an image sensor that is coupled to the housing. The apparatus also includes a non-imaging optical system coupled to the housing that can output light to a surface and produce a scattered light component and a specular reflected light component. The image sensor and the non-imaging optical system are collectively configured in such a manner that during operation, the image sensor receives from a surface (1) at least a portion of the scattered light component and not the specular reflected light component or (2) at least a portion of the scattered light component having a magnitude and at least a portion of the specular reflective light component having a magnitude less than the magnitude of the portion of the scattered light component.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 29, 2016
    Assignee: FiftyThree, Inc.
    Inventors: Thomas C. Arends, Nicholas E. Bratt, John K. Ikeda, Jonathan R. Harris, Georg F. Petschnigg
  • Patent number: 9285867
    Abstract: A hand-held device with a sensor for providing a signal indicative of a position of the hand-held device relative to an object surface enables power to the sensor at a first time interval when the hand-held device is indicated to be in a position that is stationary and adjacent relative to the object surface, enables power to the sensor at a second time interval shorter than the first time interval when the hand-held device is indicated to be in a position that is moving and adjacent relative to the object surface, and enables power to the sensor at a third time interval when the hand-held device is determined to be in a position that is removed relative to the object surface.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: March 15, 2016
    Assignee: UNIVERSAL ELECTRONICS INC.
    Inventors: Stephen Brian Gates, Jeremy K. Black
  • Patent number: 9280213
    Abstract: An optical navigation chip cooperated with a light source for being used in a mouse is provided. The mouse transmits a mouse signal to a computer for navigation control. The optical navigation chip includes an optical sensing array and a circuitry. The optical sensing array is utilized for receiving a reflected light from a surface indicating features of the surface for generating a digital frame corresponding to intensity variation caused by the reflected light. The circuitry is coupled to the optical sensing array, and utilized for generating a digital displacement signal by monitoring the intensity variation of two different digital frames, wherein the two digital frames are captured by the optical sensing array at two different times. Additionally, the mouse suspends the mouse signal to the computer if the intensity variation is flat.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: March 8, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Gary B. Gordon, Derek L. Knee, Rajeev Badyal, Jason T. Hartlove
  • Patent number: 9274617
    Abstract: An optical navigation apparatus, an optical navigation method, and a non-transitory computer readable medium thereof are provided. The optical navigation apparatus includes a light source unit, an image sensing unit, and a processing unit. The processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit provides a beam of light. The image sensing unit captures a first image at a first time instant when the light is projected onto a reflection surface. The processing unit calculates an image quality index of the first image and determines a matching block size between the first image and a second image according to the image quality index.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: March 1, 2016
    Assignee: PIXART IMAGING INC
    Inventors: Yu-Ju Lee, Tzu-Yu Chen
  • Patent number: 9274614
    Abstract: An optical mouse apparatus includes a light source unit, a sensing unit, and a processing unit. The light source unit is arranged for generating and emitting an optical signal, wherein the optical signal is emitted upon a surface, and then reflected to form an optical reflected signal. The sensing unit is arranged for generating a sensed image output according to the optical reflected signal, wherein the sensed image output is utilized for estimating an image displacement of the optical mouse apparatus. The processing unit is coupled to the light source unit and the sensing unit, and arranged for controlling the light source unit to emit the optical signal and determining a operation status of the optical mouse apparatus according to an image variation of at least a partial region of each of consecutive images of the sensed image output.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: March 1, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Chun-Wei Chen, Yen-Chang Wang
  • Patent number: 9250103
    Abstract: An optical rotary encoder includes a light source, a rotation body including a reflecting diffraction grating, a light receiving unit including a plurality of light receiving elements, a synthetic unit that combines output signals output from the plurality of light receiving elements to obtain a signal, which represents a fringe pattern component at a certain cycle, included in a light reflected by the reflecting diffraction grating and, and a detection unit that detects a direction based on a first signal and a second signal, the direction being a direction in which a distance between the rotation body and the light receiving unit varies, the first signal and the second signal being obtained by the synthetic unit, the first signal indicating a fringe pattern component having a cycle shorter than the certain cycle, the second signal indicating a fringe pattern component having a cycle longer than the certain cycle.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: February 2, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Eiji Takada, Taizan Kobayashi, Katsuki Shirai
  • Patent number: 9201543
    Abstract: An optical navigating apparatus, comprising: a displacement detecting apparatus, for determining if the optical navigating apparatus has displacement relative to an target, and for generating a displacement signal according to the displacement; and a touch control panel, for detecting a touch control operation of an user, wherein the touch control panel has a sampling rate and changes the sampling rate according to a control signal, wherein the sampling rate can be adjusted according to the displacement signal, where the sampling rate correspondingly decreases when the displacement signal indicates the displacement increases.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: December 1, 2015
    Assignee: PixArt Imaging Inc.
    Inventors: Chun-Chen Chen, Hsin-Chia Chen, Yen-Min Chang