公开(公告)号：US20230296770A1

公开(公告)日：2023-09-21

申请号：US18201731

申请日：2023-05-24

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang ,  Tse-En Peng

IPC: G01S17/04 ,  G01S7/48 ,  G01S17/08

CPC classification number: G01S17/04 ,  G01S7/4808 ,  G01S17/08

Abstract: An optical sensing system, comprising: a first light source for emitting first light to a first part of an object; a second light source for emitting second light to a second part of the object, wherein the first part is above the second part, wherein the first light is not emitted to the second part and the second light is not emitted to the first part; a uniform light source, for emitting uniform light to the object, wherein the first light source is below the uniform light source and the second light source is above the uniform light source; and an optical sensor, wherein a detecting region of the optical sensor comprises an adjustable upper half region and a lower half region. Such optical sensing system can reduce the effect that the arm causes for hand location calculating.

公开(公告)号：US11765482B2

公开(公告)日：2023-09-19

申请号：US17983099

申请日：2022-11-08

Applicant: PixArt Imaging Inc.

Inventor： Sen-Huang Huang ,  Tso-Sheng Tsai

IPC: H04N25/75 ,  H01L27/146 ,  H04N25/76 ,  H01L31/107

CPC classification number: H04N25/75 ,  H01L27/14612 ,  H01L27/14643 ,  H04N25/76 ,  H01L31/107

Abstract: There is provided an image sensor employing an avalanche diode. The image sensor includes a plurality of pixel circuits arranged in a matrix, a plurality of pulling circuits, a plurality of output circuits and a global current source circuit. Each of the plurality of pixel circuits includes a single photon avalanche diode and a P-type or N-type select switch transistor. Each of the plurality of pulling circuits is arranged corresponding to one pixel circuit column. The global current source circuit is used to form a current mirror with each of the plurality of pulling circuits. Each of the plurality of output circuits is shared by at least two pixel circuits.

公开(公告)号：US20230288564A1

公开(公告)日：2023-09-14

申请号：US18198814

申请日：2023-05-17

Applicant: PixArt Imaging Inc.

Inventor： Yueh-Lin CHUNG ,  Tso-Sheng TSAI

IPC: G01S17/36 ,  G01S7/4915 ,  G01S7/4913 ,  G01S7/4911

CPC classification number: G01S17/36 ,  G01S7/4915 ,  G01S7/4913 ,  G01S7/4911

Abstract: There is provided a distance measurement device including a light source, a light detector, a time control circuit and a processor. In first measurement, the time control circuit controls the light source to illuminate at a low modulation frequency, and the processor calculates a rough flying time according to a first detection signal of the light detector to determine an operating phase zone and a delay time. In second measurement, the time control circuit controls the light source to illuminate at a high modulation frequency and causes a light driving signal of the light source and a detecting control signal of the light detector to have a difference of the delay time, and the processor calculates a fine flying time according to a second detection signal of the light detector.

公开(公告)号：US11747939B1

公开(公告)日：2023-09-05

申请号：US17739768

申请日：2022-05-09

Applicant: PIXART IMAGING INC.

Inventor： Sung-Han Wu

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/044

Abstract: 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 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.

公开(公告)号：US11744424B2

公开(公告)日：2023-09-05

申请号：US17584796

申请日：2022-01-26

Applicant: PixArt Imaging Inc.

Inventor： Chung-Ting Yang ,  Kai-Ho Tsai

IPC: B25J19/02 ,  A47L9/28 ,  A47L11/40 ,  A47L9/30 ,  B25J11/00

CPC classification number: A47L9/2826 ,  A47L9/30 ,  A47L11/4011 ,  B25J11/0085 ,  B25J19/022 ,  A47L2201/06

Abstract: There is provided a robot including a first light source, a second light source, an image sensor and a processor. The processor is used to calculate an image quality of an image frame captured by the image sensor when the second light source is being turned on. The processor then determines whether to switch the second light source back to the first light source according to the image quality to accordingly identify the material of an operation surface.

公开(公告)号：US20230273786A1

公开(公告)日：2023-08-31

申请号：US18143609

申请日：2023-05-05

Applicant: PixArt Imaging Inc.

Inventor： Jr-Yi LI

IPC: G06F8/65 ,  G06F9/4401

CPC classification number: G06F8/65 ,  G06F9/4411

Abstract: There is provided a control chip including a microcontroller unit (MCU), a bus arbiter, a first bus, a second bus, a void hardware, a cache controller, a flash controller and a flash memory, wherein the flash memory is recorded with a firmware. When the MCU does not receive an update instruction, the bus arbiter reads, according to a function command of the MCU, a function return value associated with the function command from the flash memory via the first bus, the cache controller and the flash controller. When the MCU receives the update instruction, the bus arbiter updates the firmware in the flash memory via the second bus and the flash controller, and the void hardware actively replies a void return value associated with the function command to the MCU to replace the function return value.

公开(公告)号：US20230273070A1

公开(公告)日：2023-08-31

申请号：US18143565

申请日：2023-05-04

Applicant: PIXART IMAGING INC.

Inventor： MING-HAN TSAI ,  CHIH-MING SUN ,  JIAN-CHENG LIAO

IPC: G01J5/04 ,  G01J5/12 ,  G01J5/0875 ,  G01J5/00 ,  G01J5/05 ,  G01J5/0802

CPC classification number: G01J5/048 ,  G01J5/12 ,  G01J5/0875 ,  G01J5/0025 ,  G01J5/05 ,  G01J5/0802

Abstract: An electronic device includes an outer case, a circuit substrate, a thermopile sensor chip, a filter structure, and a waterproof structure. The outer case has an opening. The circuit substrate is disposed inside the outer case. The thermopile sensor chip is disposed on the circuit substrate. The filter structure is disposed above the thermopile sensor chip. The waterproof structure is surroundingly connected between the filter structure and the outer case, wherein the waterproof structure has a through hole for exposing the filter structure and communicated with the opening of the outer case.

公开(公告)号：US11743691B2

公开(公告)日：2023-08-29

申请号：US17677022

申请日：2022-02-22

Applicant: PIXART IMAGING INC.

Inventor： Yi-Hsien Ko

IPC: H04W4/00 ,  H04W4/06 ,  H04W4/90 ,  H04W4/12 ,  H04W84/18

CPC classification number: H04W4/06 ,  H04W4/12 ,  H04W4/90 ,  H04W84/18

Abstract: A method and node for processing messages within an Internet of Things (IoT) network and network packet thereof are provided. Multiple fields of a header of a network packet broadcasted over the IoT network are referred to in the method. When a node receives a network packet broadcasted over the IOT network, it checks if the node's ID is recorded in an ID field of the network packet. The node ID is added to the network packet if the network packet does not record the node ID, and the network packet is then broadcasted to the IOT network; otherwise, the network packet is not broadcasted if the node ID has been recorded in the ID field. The node also performs a function indicated in a function field of the network packet when the node ID is not recorded in the network packet.

公开(公告)号：US11743025B1

公开(公告)日：2023-08-29

申请号：US17695803

申请日：2022-03-15

Applicant: PixArt Imaging Inc.

Inventor： Chih-Huan Wu ,  Wen-Han Yao ,  Ren-Hau Gu

IPC: H04L7/00 ,  H04L67/12 ,  H04L67/141

CPC classification number: H04L7/0075 ,  H04L67/12 ,  H04L67/141

Abstract: A method of an optical sensor device includes: using an oscillator circuit to generate a clock signal; and generating monitoring frames according to the clock signal; wherein the clock signal is calibrated in response to at least one of: a first communication signal, transmitted for multiple times from a monitoring system externally coupled to the optical sensor device, is received by the optical sensor device; a data length of the first communication signal transmitted for only one time from the monitoring system externally coupled to the optical sensor device; and, a data length of an encoded data portion of the first communication signal transmitted for only one time.

公开(公告)号：US11741708B2

公开(公告)日：2023-08-29

申请号：US17578551

申请日：2022-01-19

Applicant: PIXART IMAGING INC.

Inventor： Guo-Zhen Wang

IPC: G06V10/44 ,  G06V20/00 ,  G06N20/00 ,  G06F18/2413 ,  G06F18/243 ,  G06N3/045 ,  G06V10/764 ,  G06V10/82 ,  G06V20/70 ,  G06N3/08

CPC classification number: G06V20/35 ,  G06F18/24143 ,  G06F18/24317 ,  G06N3/045 ,  G06N3/08 ,  G06N20/00 ,  G06V10/454 ,  G06V10/764 ,  G06V10/82 ,  G06V20/70

Abstract: An image recognition method and system based on deep learning are provided. The image recognition system includes a first recognizing engine, at least one second recognizing engine and a processing circuit. The second recognizing engine is activated to recognize a testing image when the first recognizing engine is recognizing the testing image. The processing circuit determines whether to interrupt the first recognizing engine recognizing the testing image according to a result outputted by the second recognizing engine after the second recognizing engine completes recognition of the testing image.