Patents Assigned to Pixart Imaging, Inc.
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Publication number: 20250047991Abstract: An optical sensor device includes a pixel array and a control circuit. The pixel array has pixel units arranged in N rows and M columns, and a pixel unit comprises: a photo transistor, configured to capture and generate a first image signal during a first shutter exposure time interval of a first time and to capture and generate a second image signal during a second shutter exposure time interval of a second time, the first time and the second time being consecutive; a first integration capacitor, coupled to the photo transistor, for storing the first image signal; and a second integration capacitor, coupled to the photo transistor, for storing the second image signal. The control circuit performs a motion detection to determine whether a motion occurs according to a difference between the two image signals.Type: ApplicationFiled: August 1, 2023Publication date: February 6, 2025Applicant: PixArt Imaging Inc.Inventor: Wooi Kip LIM
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Patent number: 12213780Abstract: A wearable device is illustrated. The wearable device has a body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The wearable device is suitable for wearing on a wrist of a user. The light emitting unit is disposed on an inner side of the body, and the light emitting unit emits a light beam illuminating at least a portion of the wrist. The light sensing unit operatively senses the light beam reflected by the at least portion of the wrist and generates a light sensing signal. The action recognition module is configured to operatively determine a function that corresponds to an action of the user.Type: GrantFiled: March 15, 2024Date of Patent: February 4, 2025Assignee: PIXART IMAGING INC.Inventors: Ren-Hau Gu, Chung-Wen Lo
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Patent number: 12216063Abstract: An electronic device, comprising: a first light source, configured to emit first light; a second light source, configured to emit second light; a first optical sensor, configured to sense first optical data generated based on reflected light of the first light; a light guiding device, configured to receive the second light; and a second optical sensor, configured to sense second optical data generated based on the second light emitted by the light guiding device. The first optical sensor and the second optical sensor can be integrated to a single optical sensor.Type: GrantFiled: April 27, 2021Date of Patent: February 4, 2025Assignee: PixArt Imaging Inc.Inventors: Tsung-Fa Wang, Hung-Ching Lai, Guo-Zhen Wang
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Patent number: 12213804Abstract: An earbud with temperature sensing is provided, and the earbud includes a housing, a speaker and a first temperature sensor. The housing defines a first opening and a second opening. The speaker is disposed within the housing and oriented so that audio emitted by the speaker exits the housing through the first opening defined by the housing. The first temperature sensor is positioned along an interior surface of the housing and aligned with the second opening in the housing for non-contact temperature sensing. In response to the earbud being positioned for use within an ear of a user, the second opening aligns with an inner side of the tragus close to the ear canal, the cavum conchae, an inner edge of the antitragus, or the cheek close to the ear, such that the first temperature sensor detects a body temperature of the user through the second opening.Type: GrantFiled: June 27, 2022Date of Patent: February 4, 2025Assignee: PIXART IMAGING INC.Inventors: Wei-Lun Sung, Po-Wei Yu, Chih-Ming Sun
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Patent number: 12216609Abstract: There is provided an operation of a 2-wire interface including: performing, by a master device, at least one transaction with a slave device to compare a calculated expected value and a return value of a register to confirm whether an out-of-sync occurs, and resetting a state machine of the slave device to a reset_done state and receiving, by the maser device, an acknowledge byte from the slave device to recover a synchronization between the master device and the slave device when the out-of-sync occurs.Type: GrantFiled: November 3, 2022Date of Patent: February 4, 2025Assignee: PIXART IMAGING INC.Inventor: Yen-Hsiang Chew
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Patent number: 12215872Abstract: There is provided an auto detection system including a thermal detection device and a host. The host controls an indication device to indicate a prompt message or detection results according to a slope variation of voltage values or 2D distribution of temperature values detected by the thermal detection device, wherein the voltage values include the detected voltage of a single pixel or the sum of detected voltages of multiple pixels of a thermal sensor.Type: GrantFiled: July 20, 2023Date of Patent: February 4, 2025Assignee: PIXART IMAGING INC.Inventors: Chih-Ming Sun, Ming-Han Tsai, Chiung-Wen Lin, Po-Wei Yu, Wei-Ming Wang, Sen-Huang Huang
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Patent number: 12216861Abstract: There is provided a capacitive touch control system adapted to detect low frequency signals, including a touch panel and an analog front end. The analog front end includes a frequency booster, which boosts a low frequency signal outputted by the touch panel using a variable reference frequency corresponding to different function symbols of the low frequency signal such that resistance of a resistor of an amplifier in the analog front end needs not to be increased thereby reducing the manufacturing cost and a leakage voltage drop on the resistor.Type: GrantFiled: July 21, 2023Date of Patent: February 4, 2025Assignee: PIXART IMAGING INC.Inventor: Sung-Han Wu
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Patent number: 12207786Abstract: A material determining device comprising a first image sensor, a second image sensor, and a light source is provided. The material determining method comprises: (a) sensing a first image by the first image sensor according to light from the light source; (b) sensing a second image by the second image sensor according to the light; and (c) determining whether material corresponding to material images in the first image and the second image is first type of material or second type of material, according to locations of the material images in the first image and the second image and according to shapes of the material images in the first image and the second image. By this way an electronic device using the material determining device can properly operate according to the type of material.Type: GrantFiled: September 18, 2022Date of Patent: January 28, 2025Assignee: PixArt Imaging Inc.Inventor: Guo-Zhen Wang
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Patent number: 12210690Abstract: A method of an optical navigation device, to be coupled to a computer device through a specific communication interface, includes: providing an optical sensor to sense and generate an optical navigation position related signal in response to a movement of the optical navigation device; detecting a moving speed of the movement of the optical navigation device; and, dynamically adjusting a transmission report rate of the optical navigation device, which is used to periodically transmit the optical navigation position related signal to the computer device, based on the detect moving speed.Type: GrantFiled: September 14, 2023Date of Patent: January 28, 2025Assignee: PixArt Imaging Inc.Inventor: Tsung-Fa Wang
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Patent number: 12208527Abstract: An air ejection device, configured to eject air; a distance detecting circuit, configured to detect distances between an electronic device comprising the object determining system and at least one location of an object when the air ejection device ejects air to the object; and a determining circuit, configured to determine whether the object is a rigidity type object or a soft type object according to the variations.Type: GrantFiled: October 19, 2023Date of Patent: January 28, 2025Assignee: PixArt Imaging Inc.Inventor: Guo-Zhen Wang
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Patent number: 12211219Abstract: Disclosed in a movement direction determination system comprising a first detection region, a second detection region and a processing circuit. The first detection region and the second detection region respectively comprises an optical sensor. The processing circuit determines a movement direction of an object according to the optical data generated by the first detection region and the second detection region. The present invention also discloses a movement direction determination system using a single detection region. The present invention also discloses an object volume computation system which can compute an object volume according to sensed optical data. The disclosed movement direction determination system can be used for various applications and the object volume computation system can assist product confirmation.Type: GrantFiled: December 10, 2021Date of Patent: January 28, 2025Assignee: PixArt Imaging Inc.Inventors: Jeng-Yue Weng, Tzung-Min Su, Feng-Chi Liu
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Patent number: 12204029Abstract: There is provided a mobile robot that performs the obstacle avoidance and visual simultaneous localization and mapping (VSLAM) according to image frames captured by the same optical sensor. The mobile robot includes a pixel array and a processor. An upper part of the pixel array is not coated with any filter and a lower part of the pixel array is coated with an IR filter. The processor performs range estimation using pixel data corresponding to the lower part of the pixel array, and perform the VSLAM using pixel data corresponding to the upper part of the pixel array.Type: GrantFiled: October 11, 2023Date of Patent: January 21, 2025Assignee: PIXART IMAGING INC.Inventors: Guo-Zhen Wang, Hui-Hsuan Chen
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Patent number: 12204114Abstract: There is provided an illumination system of a navigation device including a light beam shaping optics, and a first light source and a second light source having different characteristics. The light beam shaping optics is used to shape light beams emitted by the first light source and the second light source to illuminate a work surface with substantially identical incident angles and/or beam sizes.Type: GrantFiled: January 25, 2024Date of Patent: January 21, 2025Assignee: PIXART IMAGING INC.Inventor: Sai-Mun Lee
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Patent number: 12207024Abstract: A method of an image sensor circuit includes: providing an event camera comprising at least one pixel unit; using the event camera to sense at least one current pixel value of the at least one pixel unit to detect whether at least one pixel value changes; when the at least one pixel value changes, using the event camera to trigger the digital processing circuit when the digital processing circuit is in a power saving mode and transmit information of the at least one pixel value to the digital processing circuit.Type: GrantFiled: February 20, 2023Date of Patent: January 21, 2025Assignee: PixArt Imaging Inc.Inventors: Chih-Huan Wu, Wen-Han Yao
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Patent number: 12203956Abstract: There is provided an optical encoder including a phase shifter circuit and a multiple hysteresis comparators. The phase shifter circuit receives four input signals, and outputs multiple phase shifted signals based on the four input signals. Each of the multiple hysteresis comparators uses a changeable operation hysteresis level to compare a couple of phase shifted signals among the multiple phase shifted signals, wherein the changeable operation hysteresis level is determined corresponding to a signal frequency of the four input signals.Type: GrantFiled: December 5, 2023Date of Patent: January 21, 2025Assignee: PIXART IMAGING INC.Inventors: Chung-Min Thor, Kuan-Choong Shim
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Patent number: 12206967Abstract: There is provided an optical engine for a navigation device including a first light source, a second light source, a lens, a barrier structure and an image sensor. The barrier structure has a first space for containing the first light source, a second space for containing the lens and a third space for containing the second light source and the image sensor. The reflected light associated with the first light source propagates to the image sensor via the lens in the second space. The reflected light associated with the second light source propagates to the image sensor via the third space without passing through the lens in the second space.Type: GrantFiled: October 3, 2023Date of Patent: January 21, 2025Assignee: PIXART IMAGING INC.Inventor: Hung-Yu Lai
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Patent number: 12203838Abstract: There is provided a smoke detector including a substrate, a light source and a light sensor. The light source and the light sensor are arranged adjacently on the substrate. The substrate is arranged with an asymmetric structure to cause an illumination region of the light source to deviate toward the light sensor thereby increasing a ratio of light intensity reflected by smoke with respect to reference light intensity.Type: GrantFiled: January 11, 2024Date of Patent: January 21, 2025Assignee: PIXART IMAGING INC.Inventors: Yen-Chang Chu, Cheng-Nan Tsai, Chih-Ming Sun
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Patent number: 12204700Abstract: An optical sensor, comprising: a plurality of pins, wherein the optical sensor is configured to sense optical data and configured to compute motions according to the optical data; wherein the optical sensor outputs the motions to a control circuit via a complex pin among the pins in a first mode; wherein the optical sensor outputs data other than the motions to the control circuit via the complex pin in a second mode.Type: GrantFiled: October 30, 2023Date of Patent: January 21, 2025Assignee: PixArt Imaging Inc.Inventor: Tong Sen Liew
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Publication number: 20250022357Abstract: A smoke detector comprises a light source, an optical sensor, a first, and a second processing circuit. The optical sensor senses optical data and comprises; a first oscillator, generating a first oscillating signal; and a second oscillator, generating a second oscillating signal. The first processing circuit generates a first command to instruct the first oscillator to oscillate for a first expected oscillating time, and acquires a first real oscillating time, wherein the first processing circuit further computes a time relation between the first expected oscillating time and the first real oscillating time. The first processing circuit generates a second command to instruct the second oscillator to oscillate for a second expected oscillating time according to the time relation. The second processing circuit controls the smoke detector to generate a first alarm according to the time relation. The optical sensor can also be applied to other electronic devices.Type: ApplicationFiled: July 12, 2023Publication date: January 16, 2025Applicant: PixArt Imaging Inc.Inventors: Ching-Kun Chen, Guo-Zhen Wang
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Patent number: 12193785Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.Type: GrantFiled: April 8, 2024Date of Patent: January 14, 2025Assignee: PIXART IMAGING INC.Inventors: Ming-Chang Li, Ren-Hau Gu