Patents by Inventor Fei Wong
Fei Wong 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: 20150065910Abstract: The present invention relates to the use of electrochemistry to control and generate specific user defined chemical reactions in regions that may be defined by electrode placement and geometry. In one embodiment, the present invention provides a method of shape changing cartilage in a subject through potential-driven electrochemical modification of tissue (PDEMT) or use of a potential-driven electromechanical (EMR) device.Type: ApplicationFiled: May 16, 2014Publication date: March 5, 2015Applicant: REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Brian Jet-Fei Wong, Michael G. Hill, Dmitry E. Protsenko
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Publication number: 20150031565Abstract: A method of genotyping single nucleotide polymorphisms (“SNP”) and point mutations in nucleic acid based on chain extension by polymerase. This invention is based on the fact that the neighboring sequence immediately 3? adjacent to the site is known, and the nucleoside immediately 5? adjacent to any SNP/point mutation site is also known. An extension primer complementary to the sequence directly adjacent to the SNP on the 3? side of a target polynucleotide is used for chain extension. Up to four different polymerase reaction mixtures are provided in separate reaction containers, each containing one different potentially chain-extending Bridging Nucleotide. A Reporting Nucleotide having a base complementary to the nucleotide directly adjacent to the SNP on the 5? side of the target polynucleotide may also be added to each reaction container.Type: ApplicationFiled: July 22, 2014Publication date: January 29, 2015Inventors: Hong Xue, Jeffrey Tze-Fei Wong
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Patent number: 8847144Abstract: An optical encoder and optical encoding system are disclosed. Specifically, an encoder having a light detector elevated relative to a light source is described. The relative height difference between the light source and the light detector enables the optical encoder to minimize noise at the light detector without requiring a separate light baffle between the light source and light detector. Methods of manufacturing and operating such an encoder are also described.Type: GrantFiled: August 8, 2011Date of Patent: September 30, 2014Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Yik-Foong Soo, Weng Fei Wong, Wee Jin Yeap
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Patent number: 8525102Abstract: An optical encoder is disclosed. Specifically, a three-channel encoder is disclosed which utilizes a single track for all three channels. An index channel is provided on the same optical track as the first and second channels which are used to determine incremental angular position. Thus, a more compact and simple three-channel encoder is provided.Type: GrantFiled: February 15, 2011Date of Patent: September 3, 2013Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Marcin Augustyniak, Weng Fei Wong, Cheng Kwong Cheang
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Publication number: 20130161887Abstract: The present invention relates to a shock absorbing device (100) for mating an integrated deck to a jacket leg (51), characterized by: a hollow constraining cylinder (10) having a bottom closure (11), connected to the top of the jacket leg (51); an elastomer module (20) provided in the hollow constraining cylinder (10), wherein inner diameter of the hollow constraining cylinder (10) is larger than outer diameter of the elastomer module (20) thereby forming an annular space; a plurality of reinforcing plates (30) embedded within the elastomer module (20), vertically spaced apart from each other; a protective assembly comprising a elastomeric cap (41) and a minimum of one protective ring (42) mounted to the elastomeric cap (41); wherein during mating of the integrated deck to jacket leg (51), a support column (52) of the integrated deck abuts on the protective assembly and compresses the elastomer module (20) to secure the connection of the integrated deck to the jacket leg (51).Type: ApplicationFiled: June 27, 2012Publication date: June 27, 2013Applicant: Lembaga Getah Malaysia (Malaysian Rubber Board)Inventors: Kamarudin Ab Malek, Ismaliza Ismail, Hon Fei Wong, Shamsul Kamaruddin
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Publication number: 20130037705Abstract: An optical encoder and optical encoding system are disclosed. Specifically, an encoder having a light detector elevated relative to a light source is described. The relative height difference between the light source and the light detector enables the optical encoder to minimize noise at the light detector without requiring a separate light baffle between the light source and light detector. Methods of manufacturing and operating such an encoder are also described.Type: ApplicationFiled: August 8, 2011Publication date: February 14, 2013Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Yik-Foong Soo, Weng Fei Wong, Wee Jin Yeap
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Patent number: 8247758Abstract: A user navigational apparatus. The user navigational apparatus includes a dial, a coding element, and an encoder. The coding element is coupled to a dial. The coding element includes a track of alternating reflective and non-reflective sections, each having a substantially oblique leading edge relative to a direction of movement of the coding element. The encoder includes an emitter and a detector. The emitter generates a light signal incident on the track of the coding element. The detector detects a reflected light signal which corresponds to a portion of the incident light signal that is reflected off of the reflective sections of the track. The detector also generates a channel signal corresponding to the reflected light signal.Type: GrantFiled: January 27, 2010Date of Patent: August 21, 2012Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Chee Foo Lum, Weng Fei Wong, Siang Leong Foo, Timothy James Orsley
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Publication number: 20120205528Abstract: An optical encoder is disclosed. Specifically, a three-channel encoder is disclosed which utilizes a single track for all three channels. An index channel is provided on the same optical track as the first and second channels which are used to determine incremental angular position. Thus, a more compact and simple three-channel encoder is provided.Type: ApplicationFiled: February 15, 2011Publication date: August 16, 2012Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Marcin Augustyniak, Weng Fei Wong, Cheng Kwong Cheang
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Patent number: 8212202Abstract: Disclosed are various embodiments of a reflective optical encoder package having a light emitter and a light detector disposed on an integrated circuit having an optically transparent glass layer disposed thereover. The package can be manufactured without resort to wirebonding techniques and instead can be made using wafer level packaging methods and materials. The package can also be made of lower profile or smaller footprint than many conventional optical encoder packages, and may be employed to sense or detect rotary or linear motion.Type: GrantFiled: January 8, 2009Date of Patent: July 3, 2012Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Weng Fei Wong, Cheng Kwong Cheang
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Patent number: 8193483Abstract: Disclosed are various embodiments of high-speed, high-performance, low-noise optical encoders having various means for preventing undesired stray light from reaching light detectors incorporated therein. Structures employed to block stray light in the optical encoders include light barriers, air gap trenches, and coatings disposed between first and second sides of a substrate of the encoder. Also disclosed are compact single track optical encoders having a single dome lens disposed thereover, and dual track triple dome lens optical encoders. Methods of making such optical encoders are also disclosed.Type: GrantFiled: August 23, 2010Date of Patent: June 5, 2012Inventors: Yee Loong Chin, Weng Fei Wong, Wee Jin Yeap, Cheng Kwong Cheang
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Patent number: 8068040Abstract: A sensor head for sensing light modulated by a moveable member, such as a code wheel or code strip, in an optical encoder. The sensor head has at least one monitor optical sensor and a primary optical sensor positioned to receive light modulated by a modulation track on the moveable member. The monitor optical sensor provides a monitor signal that is compared in a signal comparator to the output from the primary optical sensor to detect light at the primary sensor.Type: GrantFiled: February 25, 2005Date of Patent: November 29, 2011Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Weng Fei Wong, Chee Foo Lum, Siow Ming Tan
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Patent number: 8063355Abstract: Disclosed herein are a number of different embodiments of reflective multi-turn optical encoders with different light sensing systems. Three different basic configurations of reflective multi-turn optical encoder light sensing systems are disclosed herein: (a) optical encoders employing multiple arrays of light detectors; (b) optical encoders employing multiple arrays of stacked die light sensors, and (c) optical encoders employing variable tone density light sensing systems.Type: GrantFiled: January 8, 2009Date of Patent: November 22, 2011Assignee: Avago Technologies LimitedInventors: Sze Kuang Lee, Yee Loong Chin, Weng Fei Wong
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Publication number: 20110207578Abstract: Various embodiments of harmonic gear multi-turn encoders are disclosed that provide the ability to accurately sense absolute rotational positions over a wide range of rotational counts. High gear reduction ratios in each stage of the multi-turn encoders permit very small size and volume encoders to be provided, thereby opening up many new applications for multi-turn encoders. In one embodiment, inductive means are employed to determine the number of revolutions a central shaft operably connected to an encoder module has turned. The inductive coils comprise emitter coils and receiver coils, which are operably associated with and opposed to corresponding encoder devices. The various embodiments of the harmonic gear multi-turn encoders disclosed herein are capable of operating under high temperature conditions and withstanding the effects of various environmental contaminants, and are also amenable to miniaturization and low cost manufacturing.Type: ApplicationFiled: February 23, 2010Publication date: August 25, 2011Applicant: Avago Technologies ECBU (Singapore) Pte, Ltd.Inventors: Sze Kuang Lee, Weng Fei Wong
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Publication number: 20100314532Abstract: Disclosed are various embodiments of high-speed, high-performance, low-noise optical encoders having various means for preventing undesired stray light from reaching light detectors incorporated therein. Structures employed to block stray light in the optical encoders include light barriers, air gap trenches, and coatings disposed between first and second sides of a substrate of the encoder. Also disclosed are compact single track optical encoders having a single dome lens disposed thereover, and dual track triple dome lens optical encoders. Methods of making such optical encoders are also disclosed.Type: ApplicationFiled: August 23, 2010Publication date: December 16, 2010Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.Inventors: Yee Loong Chin, Weng Fei Wong, Wee Jin Yeap, Cheng Kwong Cheang
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Patent number: 7795576Abstract: Disclosed are various embodiments of high-speed, high-performance, low-noise optical encoders having various means for preventing undesired stray light from reaching light detectors incorporated therein. Structures employed to block stray light in the optical encoders include light barriers, air gap trenches, and coatings disposed between first and second sides of a substrate of the encoder. Also disclosed are compact single track optical encoders having a single dome lens disposed thereover, and dual track triple dome lens optical encoders. Methods of making such optical encoders are also disclosed.Type: GrantFiled: December 23, 2008Date of Patent: September 14, 2010Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Yee Loong Chin, Weng Fei Wong, Wee Jin Yeap, Cheng Kwong Cheang
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Publication number: 20100171029Abstract: Disclosed herein are a number of different embodiments of reflective multi-turn optical encoders with different light sensing systems. Three different basic configurations of reflective multi-turn optical encoder light sensing systems are disclosed herein: (a) optical encoders employing multiple arrays of light detectors; (b) optical encoders employing multiple arrays of stacked die light sensors, and (c) optical encoders employing variable tone density light sensing systems.Type: ApplicationFiled: January 8, 2009Publication date: July 8, 2010Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.Inventors: Sze Kuang Lee, Weng Fei Wong, Yee Loong Chin
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Publication number: 20100171028Abstract: Disclosed are various embodiments of a reflective optical encoder package having a light emitter and a light detector disposed on an integrated circuit having an optically transparent glass layer disposed thereover. The package can be manufactured without resort to wirebonding techniques and instead can be made using wafer level packaging methods and materials. The package can also be made of lower profile or smaller footprint than many conventional optical encoder packages, and may be employed to sense or detect rotary or linear motion.Type: ApplicationFiled: January 8, 2009Publication date: July 8, 2010Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.Inventors: Weng Fei Wong, Cheng Kwong Cheang
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Publication number: 20100155586Abstract: Disclosed are various embodiments of high-speed, high-performance, low-noise optical encoders having various means for preventing undesired stray light from reaching light detectors incorporated therein. Structures employed to block stray light in the optical encoders include light barriers, air gap trenches, and coatings disposed between first and second sides of a substrate of the encoder. Also disclosed are compact single track optical encoders having a single dome lens disposed thereover, and dual track triple dome lens optical encoders. Methods of making such optical encoders are also disclosed.Type: ApplicationFiled: December 23, 2008Publication date: June 24, 2010Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.Inventors: Yee Loong Chin, Weng Fei Wong, Wee Jin Yeap, Cheng Kwong Cheang
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Patent number: 7732756Abstract: A user navigational apparatus. The user navigational apparatus includes a code wheel and an encoder. The code wheel is coupled to a dial. The code wheel includes a track of alternating reflective and non-reflective sections. The optical reflective encoder includes an emitter and a detector. The emitter generates a light signal incident on the track of the code wheel. The detector detects a reflected light signal. The reflected light signal corresponds to a portion of the incident light signal that is reflected off of the reflective sections of the track. The detector also generates a channel signal corresponding to the reflected light signal. Embodiments of this type of user navigational apparatus achieve reduced thickness compared to conventional implementations of jog wheels.Type: GrantFiled: November 1, 2006Date of Patent: June 8, 2010Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Chee Foo Lum, Weng Fei Wong, Siang Leong Foo
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Publication number: 20100127162Abstract: A user navigational apparatus. The user navigational apparatus includes a dial, a coding element, and an encoder. The coding element is coupled to a dial. The coding element includes a track of alternating reflective and non-reflective sections, each having a substantially oblique leading edge relative to a direction of movement of the coding element. The encoder includes an emitter and a detector. The emitter generates a light signal incident on the track of the coding element. The detector detects a reflected light signal which corresponds to a portion of the incident light signal that is reflected off of the reflective sections of the track. The detector also generates a channel signal corresponding to the reflected light signal.Type: ApplicationFiled: January 27, 2010Publication date: May 27, 2010Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Chee Foo Lum, Weng Fei Wong, Siang Leong Foo, Timothy James Orsley