Patents by Inventor Shih-Feng Chen

Shih-Feng Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250031929
    Abstract: A cleaning system and a cleaning method are provided. The cleaning system includes a main body, an air suctioning device, a light source, an optical sensor, a memory and a processing unit. The air suctioning device includes an air flow passage and a fan-motor assembly that is disposed in the air flow passage and generates a suction force to suction outside air through the air flow passage. The light source emit light to the air flow passage. The optical sensor captures a plurality of successive image frames from the air flow passage. The processing unit is configured to: obtain first and second image frames from the successive image frames; compare the first image frame with the second image frame to identify dust particles; obtain a particle feature of the dust particles; and determine a current cleanness condition according to the particle feature.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: SHIH-FENG CHEN, HAN-LIN CHIANG, NING SHYU
  • Publication number: 20250017138
    Abstract: A weeder robot includes a movable carrier and a blade module assembled to the movable carrier. The movable carrier includes a map creating module and a control module that is electrically coupled to the blade module and the map creating module. The map creating module includes an infrared unit and a vision sensing unit. The infrared unit can emit and receive an infrared light. The vision sensing unit can obtain an image information in a non-contact manner. The movable carrier can be used to move in a court, so that the map creating module can generate a three-dimensional (3D) court map through cooperation between the infrared unit and the vision sensing unit. When the weeder robot performs a maintenance process, the control module drives the blade module to weed a portion of a lawn higher than a predetermined height according to the 3D court map.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 16, 2025
    Inventors: YEN-MIN CHANG, SHIH-FENG CHEN, HAN-LIN CHIANG
  • Patent number: 12194515
    Abstract: An inverting and cleaning device includes a positioning mechanism, an inverting mechanism, and a cleaning mechanism. The positioning mechanism is adapted to move a drum to a first position. The inverting mechanism includes a holding member. When the drum is located at the first position, the holding member clamps a drum body of the drum and inverts the drum to a second position where an opening on a top of the drum faces downward. The cleaning mechanism includes a cleaning tool. When the drum is located at the second position, the cleaning tool enters the drum through the opening of the drum for cleaning an inside of the drum.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: January 14, 2025
    Assignee: TRUSVAL TECHNOLOGY CO., LTD.
    Inventors: Shih-Feng Chen, Shih-Pao Chien
  • Patent number: 12156632
    Abstract: A cleaning system and a cleaning method are provided. The cleaning system includes a main body, an air suctioning device, a light source, an optical sensor, a memory and a processing unit. The air suctioning device includes an air flow passage and a fan-motor assembly that is disposed in the air flow passage and generates a suction force to suction outside air through the air flow passage. The light source emit light to the air flow passage. The optical sensor captures a plurality of successive image frames from the air flow passage. The processing unit is configured to: obtain first and second image frames from the successive image frames; compare the first image frame with the second image frame to identify dust particles; obtain a particle feature of the dust particles; and determine a current cleanness condition according to the particle feature.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: December 3, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Shih-Feng Chen, Han-Lin Chiang, Ning Shyu
  • Patent number: 12066522
    Abstract: A navigation device applied to a wireless identification tag includes a movable signal transceiver and an operation processor. The movable signal transceiver is adapted to transmit a detection signal and receive an actuation signal relevant to the detection signal. The operation processor is electrically connected to the movable signal transceiver. The operation processor is adapted to analyze the actuation signal to acquire relative position between the movable signal transceiver and the wireless identification tag, and generate a motion parameter in accordance with the relative position for moving the movable signal transceiver.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: August 20, 2024
    Assignee: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Han-Lin Chiang, Ning Shyu
  • Patent number: 12033331
    Abstract: A method for detecting motion information includes the following steps. First, a pixel array is provided for detecting an image of a measured object located in a first distance range or in a second distance range, and the pixel array includes a plurality of invisible image sensing pixels and a plurality of visible image sensing pixels. Then, image detection is conducted within the first distance range by using the invisible image sensing pixels to output a plurality of invisible images. Next, the image detection is conducted within the second distance range by using the visible image sensing pixels to output a plurality of visible images. Then, the plurality of invisible images and the plurality of visible images are analyzed by using a processing unit, so as to obtain motion information of the measured object. A pixel array for detecting motion information and an image sensor are also provided.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: July 9, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Han-Chang Lin, Shu-Sian Yang, Shih-Feng Chen
  • Patent number: 11979738
    Abstract: A method of wireless communication locator station to be disposed at specific location includes: detecting rotation angle information of client-based portable device, carried or worn by user, according to specific wireless communication standard between wireless communication locator station and client-based portable device when client-based portable device is within signal range of wireless communication locator station; generating head pose direction estimation according to calculated rotation angle information; and when head pose direction estimation indicates that a user turns face towards wireless communication locator station, sending packet signal from wireless communication locator station to server-based portable device, successfully paired with and security-connected with client-based portable device, so that server-based portable device can transfer packet signal to client-based portable device after receiving packet signal.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: May 7, 2024
    Assignee: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20240074631
    Abstract: A cleaning system and a cleaning method are provided. The cleaning system includes a main body, an air suctioning device, a light source, an optical sensor, a memory and a processing unit. The air suctioning device includes an air flow passage and a fan-motor assembly that is disposed in the air flow passage and generates a suction force to suction outside air through the air flow passage. The light source emit light to the air flow passage. The optical sensor captures a plurality of successive image frames from the air flow passage. The processing unit is configured to: obtain first and second image frames from the successive image frames; compare the first image frame with the second image frame to identify dust particles; obtain a particle feature of the dust particles; and determine a current cleanness condition according to the particle feature.
    Type: Application
    Filed: September 1, 2022
    Publication date: March 7, 2024
    Inventors: SHIH-FENG CHEN, HAN-LIN CHIANG, NING SHYU
  • Patent number: 11834318
    Abstract: An automatic liquid filling system includes a machine assembly, a gripping unit, and a controlling unit. The machine assembly has a filling zone for receiving at least one container. The container has an opening. The machine assembly includes a plurality of filling nozzles in the filling zone. The gripping unit in the machine assembly includes a moving track and a robotic arm. The robotic arm is movably disposed on the moving track. The controlling unit in the machine assembly is electrically connected to the gripping unit. When the container is located in the filling zone, the controlling unit controls the robotic arm to move along the moving track and to pick up one of the filling nozzles to fill the container through the opening of the container. A method of filling liquid is provided herewith.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: December 5, 2023
    Assignee: TRUSVAL TECHNOLOGY CO., LTD.
    Inventors: Shih-Feng Chen, Shih-Pao Chien
  • Patent number: 11778427
    Abstract: A voice communication method between two or more wearable electronic devices via Bluetooth communication includes: providing the two or more wearable electronic devices paired with a mobile phone device; determining whether a distance between the two or more wearable electronic devices is larger than a distance threshold; controlling a wearable electronic device to enter a walkie-talkie mode to start a walkie-talkie conversation with one or more other wearable electronic devices when the distance is larger than the distance threshold; and during the walkie-talkie mode using the such wearable electronic device to send voice data from the wearable electronic device to one or more other wearable electronic devices to make the other wearable electronic device(s) to receive and play the voice data in the walkie-talkie mode for different user(s).
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: October 3, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20230282023
    Abstract: There is provided an electronic device capable of improving the difficulty of breaking a digital electronic lock and the accuracy of gesture control. The electronic device is unlocked according to gestures of a single hand or two hands, an operation hand, a gesture position, a staying time of gesture and a gesture variation of a user. The electronic device further improves the accuracy of gesture control in conjunction with an accessory pattern, temperature sensing and space information of a wearable device. The present disclosure further provides an electronic device that identifies legitimacy of moving the electronic device according to a variation sequence of 3-axis accelerations of an accelerometer.
    Type: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Inventors: NING SHYU, SHIH-FENG CHEN, HAN-LIN CHIANG, YEN-MIN CHANG, GUO-ZHEN WANG
  • Publication number: 20230278846
    Abstract: An automatic liquid filling system includes a machine assembly, a gripping unit, and a controlling unit. The machine assembly has a filling zone for receiving at least one container. The container has an opening. The machine assembly includes a plurality of filling nozzles in the filling zone. The gripping unit in the machine assembly includes a moving track and a robotic arm. The robotic arm is movably disposed on the moving track. The controlling unit in the machine assembly is electrically connected to the gripping unit. When the container is located in the filling zone, the controlling unit controls the robotic arm to move along the moving track and to pick up one of the filling nozzles to fill the container through the opening of the container. A method of filling liquid is provided herewith.
    Type: Application
    Filed: May 19, 2022
    Publication date: September 7, 2023
    Applicant: TRUSVAL TECHNOLOGY CO., LTD.
    Inventors: SHIH-FENG CHEN, SHIH-PAO CHIEN
  • Publication number: 20230264239
    Abstract: An inverting and cleaning device includes a positioning mechanism, an inverting mechanism, and a cleaning mechanism. The positioning mechanism is adapted to move a drum to a first position. The inverting mechanism includes a holding member. When the drum is located at the first position, the holding member clamps a drum body of the drum and inverts the drum to a second position where an opening on a top of the drum faces downward. The cleaning mechanism includes a cleaning tool. When the drum is located at the second position, the cleaning tool enters the drum through the opening of the drum for cleaning an inside of the drum.
    Type: Application
    Filed: February 24, 2022
    Publication date: August 24, 2023
    Applicant: TRUSVAL TECHNOLOGY CO., LTD.
    Inventors: SHIH-FENG CHEN, Shih-Pao Chien
  • Publication number: 20230236073
    Abstract: A temperature detecting apparatus is provided. The temperature detecting apparatus includes a movable carrier and a thermal sensor. The movable carrier includes a control module, and is movable in a working place according to a designated command. The thermal sensor is assembled to the movable carrier and is electrically coupled to the control module. When the movable carrier is moved according to the designated command, the thermal sensor is configured to detect the working place so as to generate an immediate temperature distribution of the working place. Moreover, when the immediate temperature distribution generated from the thermal sensor has an abnormal temperature value, the control module is configured to emit a warning signal to an external apparatus.
    Type: Application
    Filed: January 25, 2022
    Publication date: July 27, 2023
    Inventors: HAN-LIN CHIANG, SHIH-FENG CHEN, NING SHYU
  • Publication number: 20230232181
    Abstract: A method of wireless communication locator station to be disposed at specific location includes: detecting rotation angle information of client-based portable device, carried or worn by user, according to specific wireless communication standard between wireless communication locator station and client-based portable device when client-based portable device is within signal range of wireless communication locator station; generating head pose direction estimation according to calculated rotation angle information; and when head pose direction estimation indicates that a user turns face towards wireless communication locator station, sending packet signal from wireless communication locator station to server-based portable device, successfully paired with and security-connected with client-based portable device, so that server-based portable device can transfer packet signal to client-based portable device after receiving packet signal.
    Type: Application
    Filed: March 29, 2023
    Publication date: July 20, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20230221427
    Abstract: A navigation device applied to a wireless identification tag includes a movable signal transceiver and an operation processor. The movable signal transceiver is adapted to transmit a detection signal and receive an actuation signal relevant to the detection signal. The operation processor is electrically connected to the movable signal transceiver. The operation processor is adapted to analyze the actuation signal to acquire relative position between the movable signal transceiver and the wireless identification tag, and generate a motion parameter in accordance with the relative position for moving the movable signal transceiver.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 13, 2023
    Applicant: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Han-Lin Chiang, Ning Shyu
  • Patent number: 11647351
    Abstract: A method of wireless communication locator station to be disposed at specific location includes: detecting rotation angle information of client-based portable device, carried or worn by user, according to specific wireless communication standard between wireless communication locator station and client-based portable device when client-based portable device is within signal range of wireless communication locator station; generating head pose direction estimation according to calculated rotation angle information; and when head pose direction estimation indicates that a user turns face towards wireless communication locator station, sending packet signal from wireless communication locator station to server-based portable device, successfully paired with and security-connected with client-based portable device, so that server-based portable device can transfer packet signal to client-based portable device after receiving packet signal.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: May 9, 2023
    Assignee: PixArt Imaging Inc.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Patent number: 11393332
    Abstract: A detection device and an indoor navigation system are provided. The detection device includes two detection modules each including a sound receiver for receiving sound from a peripheral object and a signal converting circuit that is electrically coupled to the sound receiver and that is configured to convert input signal from the sound receiver into a target spectrogram. The two spectrograms from the signal converting circuits have a time/phase difference, and at least one wireless earphone includes a storage unit and a judging circuit that is electrically coupled to the storage unit and the two signal converting circuits. The judging circuit is configured to compare any target spectrogram with basic spectrograms of the storage unit so as to determine which kind of objects the peripheral object is, and is configured to obtain an instant position of the peripheral object by the time/phase difference.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: July 19, 2022
    Assignee: PIXART IMAGING INC.
    Inventors: Shih-Feng Chen, Yen-Min Chang
  • Publication number: 20220161748
    Abstract: A multiple detection system is applied to a vehicle and includes a contact-type detection module adapted to generate a contact-type detection datum, a contactless-type detection module adapted to generate a contactless-type detection datum, and an operation processor electrically connected with the contact-type detection module and the contactless-type detection module in a wire manner or in a wireless manner. The operation processor sets at least one of the contact-type detection datum and the contactless-type detection datum according to an environmental status of the vehicle to be a main detection result of the multiple detection system, and further sets the other detection datum to be an auxiliary detection result of the multiple detection system, for acquiring a passenger feature inside the vehicle.
    Type: Application
    Filed: November 26, 2020
    Publication date: May 26, 2022
    Inventors: Han-Lin Chiang, Shih-Feng Chen, Yen-Min Chang, Ning Shyu, Chih-Wei Huang
  • Publication number: 20220078584
    Abstract: A voice communication method between two or more wearable electronic devices via Bluetooth communication includes: providing the two or more wearable electronic devices paired with a mobile phone device; determining whether a distance between the two or more wearable electronic devices is larger than a distance threshold; controlling a wearable electronic device to enter a walkie-talkie mode to start a walkie-talkie conversation with one or more other wearable electronic devices when the distance is larger than the distance threshold; and during the walkie-talkie mode using the such wearable electronic device to send voice data from the wearable electronic device to one or more other wearable electronic devices to make the other wearable electronic device(s) to receive and play the voice data in the walkie-talkie mode for different user(s).
    Type: Application
    Filed: September 9, 2020
    Publication date: March 10, 2022
    Inventors: Shih-Feng Chen, Yen-Min Chang