Patents by Inventor Colin WEI
Colin WEI 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).
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Publication number: 20230331543Abstract: Provided is a MEMS device and an electro-acoustic transducer. The MEMS device includes: a substrate having a cavity passing through the substrate; a diaphragm connected to the substrate and covers the cavity. The diaphragm includes oppositely arranged first and second membranes. The first membrane is on one side of the second membrane facing away from the cavity and includes a first protrusion extending away from the second membrane, the first protrusion has a first groove opening towards the second membrane. The second membrane includes a second protrusion extending away from the first membrane and opposite to the first protrusion, the second protrusion has a second groove opening towards the first membrane. By providing first and second protrusions on first and second diaphragms to form a corrugated diaphragm, the internal stress and stiffness of the diaphragm decreases, which effectively increases the mechanical sensitivity of the MEMS device.Type: ApplicationFiled: April 18, 2022Publication date: October 19, 2023Inventors: Yannick Pierre Kervran, Euan James Boyd, Colin Robert Jenkins, Colin Wei Hong Chung, Scott Lyall Cargill
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Publication number: 20230326188Abstract: A method for self-supervised learning is described. The method includes generating a plurality of augmented data from unlabeled image data. The method also includes generating a population augmentation graph for a class determined from the plurality of augmented data. The method further includes minimizing a contrastive loss based on a spectral decomposition of the population augmentation graph to learn representations of the unlabeled image data. The method also includes classifying the learned representations of the unlabeled image data to recover ground-truth labels of the unlabeled image data.Type: ApplicationFiled: April 6, 2022Publication date: October 12, 2023Applicants: TOYOTA RESEARCH INSTITUTE, INC., THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITYInventors: Jeff Z. HAOCHEN, Colin WEI, Adrien David GAIDON, Tengyu MA
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Patent number: 11743634Abstract: An MEMS microphone includes a substrate including a back volume provided inside the substrate and an opening provided at an upper surface of the substrate to communicate the back volume; a sensing device provided at an inner side wall of the back volume; a first cantilever provided inside the back volume and including end portions coupling with the sensing device; a first membrane provided at the opening; a second membrane provided inside the back volume; and second cantilevers, each of which includes a first end mechanically supporting the first cantilever, and a second end connected to the second membrane. By suspending the first cantilever on the second cantilevers, the end portions of the first cantilever always couple with a preset position of the sensing device. Thus, the DC offset of the displacement of the membrane can be prevented.Type: GrantFiled: May 20, 2021Date of Patent: August 29, 2023Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.Inventors: Euan James Boyd, Anup Patel, Colin Wei Hong Chung
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Publication number: 20220377453Abstract: An MEMS microphone includes a substrate including a back volume provided inside the substrate and an opening provided at an upper surface of the substrate to communicate the back volume; a sensing device provided at an inner side wall of the back volume; a first cantilever provided inside the back volume and including end portions coupling with the sensing device; a first membrane provided at the opening; a second membrane provided inside the back volume; and second cantilevers, each of which includes a first end mechanically supporting the first cantilever, and a second end connected to the second membrane. By suspending the first cantilever on the second cantilevers, the end portions of the first cantilever always couple with a preset position of the sensing device. Thus, the DC offset of the displacement of the membrane can be prevented.Type: ApplicationFiled: May 20, 2021Publication date: November 24, 2022Inventors: Euan James Boyd, Anup Patel, Colin Wei Hong Chung
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Patent number: 11267695Abstract: Micro-electro-mechanical system (MEMS) devices are disclosed, including a MEMS device comprising a semiconductor die including integrated circuitry, a structure mounted on the semiconductor die and covering at least a portion of the circuitry, the structure defining a space between the structure and the at least a portion of the circuitry, and a transducer including a membrane, the transducer located outside of the space.Type: GrantFiled: April 12, 2018Date of Patent: March 8, 2022Assignee: Cirrus Logic, Inc.Inventors: James Thomas Deas, Colin Wei Hong Chung, Marek Sebastian Piechocinski
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Publication number: 20200055726Abstract: Micro-electro-mechanical system (MEMS) devices are disclosed, including a MEMS device comprising a semiconductor die including integrated circuitry, a structure mounted on the semiconductor die and covering at least a portion of the circuitry, the structure defining a space between the structure and the at least a portion of the circuitry, and a transducer including a membrane, the transducer located outside of the space.Type: ApplicationFiled: April 12, 2018Publication date: February 20, 2020Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: James Thomas DEAS, Colin Wei Hong CHUNG, Marek Sebastian PIECHOCINSKI
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Patent number: 10266393Abstract: The application describes MEMS transducers having a vent structure provided in a flexible membrane of the vent structure The vent structure comprises at least one moveable portion and the vent structure is configured such that, in response to a differential pressure across the vent structure, the moveable portion is rotatable about first and second axes of rotation, which axes of rotation extend in the plane of the membrane.Type: GrantFiled: January 24, 2017Date of Patent: April 23, 2019Assignee: Cirrus Logic, Inc.Inventors: Colin Wei Hong Chung, Scott Lyall Cargill, Colin Robert Jenkins
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Publication number: 20170217761Abstract: The application describes MEMS transducers having a vent structure provided in a flexible membrane of the vent structure The vent structure comprises at least one moveable portion and the vent structure is configured such that, in response to a differential pressure across the vent structure, the moveable portion is rotatable about first and second axes of rotation, which axes of rotation extend in the plane of the membrane.Type: ApplicationFiled: January 24, 2017Publication date: August 3, 2017Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Colin Wei Hong CHUNG, Scott Lyall CARGILL, Colin Robert JENKINS