公开(公告)号：US11336870B2

公开(公告)日：2022-05-17

申请号：US17151625

申请日：2021-01-18

Applicant: PixArt Imaging Inc.

Inventor： Wen-Cheng Yen ,  Wen-Han Yao

IPC: H04N7/18 ,  G08B13/196 ,  G06T7/246

Abstract: A smart motion detection device with a determining method includes a memory, a processor, and a sensor array coupled to the memory and the processor. An image captured by the sensor array is processed by the processor. The sensor array is adapted to pre-store the image into the memory when the processor is operated in the sleep mode, and the pre-stored image is transmitted to the processor when the processor is operated in the wakeup mode. The sensor array includes a comparator adapted to generate an alarm signal for switching the processor from the sleep mode to the wakeup mode in accordance with a comparison result of the pre-stored image. The determining method includes the processor analyzing images captured by the sensor array when the sensor array is activated to capture the images, and the processor analyzing images pre-stored inside the memory when the sensor array is not activated.

公开(公告)号：US20220142512A1

公开(公告)日：2022-05-12

申请号：US17582083

申请日：2022-01-24

Applicant: PIXART IMAGING INC.

Inventor： REN-HAU GU ,  CHUNG-WEN LO

IPC: A61B5/11

Abstract: An action recognition system is illustrated. The action recognition system has an annular body, at least one light emitting unit, at least one light sensing unit and an action recognition module. The annular body is worn on a movable part of a user. One end of the light emitting unit is exposed on an inner side of the annular body, wherein the light emitting unit emits a first light beam illuminating at least a portion of the movable part. One end of the light sensing unit is exposed on the inner side of the annular body. The light sensing unit operatively senses a second light beam reflected by the at least portion of the movable part and generates a light sensing signal. The action recognition module is configured to operatively determine an action of the user according to the light sensing signal.

公开(公告)号：US11328152B2

公开(公告)日：2022-05-10

申请号：US16442783

申请日：2019-06-17

Applicant: PixArt Imaging Inc.

Inventor： Nien-Tse Chen ,  Yi-Hsien Ko ,  Yen-Min Chang

IPC: G06K9/00 ,  G01J5/02 ,  A61B5/01 ,  A61B5/00

Abstract: There is provided a recognition system adaptable to a portable device or a wearable device. The recognition system senses a body heat using a thermal sensor, and performs functions such as the living body recognition, image denoising and body temperature prompting according to detected results.

公开(公告)号：US11327550B2

公开(公告)日：2022-05-10

申请号：US16991255

申请日：2020-08-12

Applicant: PixArt Imaging Inc.

Inventor： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC: G06F1/3234 ,  H04N5/235 ,  H04N5/3745 ,  H04N5/357 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/03

Abstract: There is provided a navigation device including an image sensor, an analog to digital converter and a processor. The image sensor is used to output an analog image using an exposure time. The analog to digital converter is used to convert the analog image to a digital image using a resolution. The processor is used to identify an image quality of the digital image, and adjust at least one of the exposure time of the image sensor and the resolution of the analog to digital converter according to the image quality thereby adjusting the operation power by changing data length actually processed by the processor.

公开(公告)号：US11317042B2

公开(公告)日：2022-04-26

申请号：US17183366

申请日：2021-02-24

Applicant: PixArt Imaging Inc.

Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Jui-Te Chiu

IPC: H04N5/355 ,  H01L27/146 ,  H04N5/353

Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.

公开(公告)号：US11309858B2

公开(公告)日：2022-04-19

申请号：US17102737

申请日：2020-11-24

Applicant: PixArt Imaging Inc.

Inventor： Kuan-Li Chao ,  Kuo-Wei Kao ,  I-Ting Lee ,  Wei-Lin Chang ,  Wei-Ren Lan ,  Kuo-Ping Yang

IPC: H03G7/06 ,  H04R5/02 ,  H04S1/00 ,  H04R5/04

Abstract: A method for inducing brain waves by sound has the following steps: receiving a first channel input signal and a second channel input signal; adjusting a volume gain of the first channel input signal to form a first channel output signal, wherein a format of the volume gain of the first channel output signal is a first wave format; adjusting a volume gain of the second channel input signal to form a second channel output signal, wherein a format of the volume gain of the second channel output signal is a second wave format, wherein there is a phase difference between the first wave format and the second wave format, wherein the formats of the first wave format and the second wave format are the same; outputting the first channel output signal to a first speaker; and outputting the second channel output signal to a second speaker.

公开(公告)号：US11306937B2

公开(公告)日：2022-04-19

申请号：US16111217

申请日：2018-08-24

Applicant: PixArt Imaging Inc.

Inventor： Yi-Hsien Ko

IPC: F24F11/523 ,  F24F11/72 ,  F24F110/10

Abstract: A temperature detecting device is cooperated with an air conditioner. The temperature detecting device includes a temperature detector and a visual indicator. The temperature detector is utilized to generate a temperature distribution result about a specific area. The visual indicator is electrically connected to the temperature detector and utilized to provide a visual mark indicating position information according to the temperature distribution result. The conditioner includes an air supply module, a wind adjustment module and a detection camera. The wind adjustment module is adapted to adjust wind's direction from the air supply module. The detection camera is electrically connected with the wind adjustment module and adapted to detect the visual mark for controlling the wind adjustment module.

公开(公告)号：US11303820B2

公开(公告)日：2022-04-12

申请号：US16993433

申请日：2020-08-14

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: H04N5/235 ,  H04N5/232 ,  H04N5/355 ,  H04N5/357 ,  G06T5/00 ,  G06N20/00 ,  H04N5/374

Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.

公开(公告)号：US11301065B2

公开(公告)日：2022-04-12

申请号：US16804514

申请日：2020-02-28

Applicant: PIXART IMAGING INC.

Inventor： Keng-Yeen Lye ,  Kevin Len-Li Lim

IPC: G06F3/038 ,  G06F3/0354 ,  G01C21/20 ,  G06F1/04 ,  H03K21/08

Abstract: There is provided a frame rate adjusting method of a navigation device including: counting a frame period using a clock of a local oscillator of the navigation device; counting a polling period using the same clock; calculating a difference between the frame period and the polling period; adjusting a frame rate of the navigation device when the difference is smaller than a predetermined margin.

公开(公告)号：US11294391B2

公开(公告)日：2022-04-05

申请号：US16423571

申请日：2019-05-28

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang

IPC: G06K9/00 ,  G05D1/02 ,  G06T7/62 ,  G06T7/70 ,  G06T5/00 ,  G06T7/73

Abstract: There is provided a moving robot including a light projector, an image sensor and a processing unit. The light projector projects a vertical light segment toward a moving direction. The image sensor captures, toward the moving direction, an image frame containing a light segment image associated with the vertical light segment. The processing unit calculates a step distance and a segment feature according to the image frame, outputs a flag signal according to the segment feature to indicate whether the calculated step distance is confident or not, and perform a pixel interpolation in calculating the step distance to improve the identification accuracy.