Patents by Inventor Zhan Yu
Zhan Yu 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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Patent number: 10484215Abstract: A system and method for an NFC card for use in asynchronous NFC card emulation mode transmission. The method comprises estimating carrier frequency offset between a carrier frequency of a NFC reader and a carrier frequency of the NFC card, adjusting digital baseband sampling of the baseband sample output at the NFC card emulation mode transmitter based on the estimated carrier frequency offset to obtain an adjusted baseband sample output and modulating a RF transmitter in the NFC card emulation mode transmitter based on the adjusted baseband sample output.Type: GrantFiled: April 27, 2018Date of Patent: November 19, 2019Assignee: Huawei International Pte. Ltd.Inventors: Harya Wicaksana, Zhan Yu, Rui Yu
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Patent number: 10397545Abstract: Methods and systems for generating three-dimensional (3D) images, 3D light field (LF) cameras and 3D photographs are provided. Light representing a scene is directed through a lens module coupled to an imaging sensor. The lens module includes: a surface having a slit-shaped aperture and a cylindrical lens array positioned along an optical axis of the imaging sensor. A longitudinal direction of the slit-shaped aperture is arranged orthogonal to a cylindrical axis of the cylindrical lens array. The light directed through the lens module is captured by the imaging sensor to form a 3D LF image. A 3D photograph includes a 3D LF printed image of the scene and a cylindrical lens array disposed on the printed image, such that the combination of 3D LF printed image and the cylindrical lens array forms a 3D stereoscopic image.Type: GrantFiled: December 23, 2014Date of Patent: August 27, 2019Assignee: University of DelewareInventors: Jingyi Yu, Xinqing Guo, Zhan Yu
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Patent number: 10187100Abstract: Embodiments of the invention provide a system and method for direct RF sampling a Near Field Communication (NFC) receiver at a rate higher than the carrier frequency by reducing and shifting requirements at a front end analog module to a digital module.Type: GrantFiled: March 20, 2018Date of Patent: January 22, 2019Assignee: Huawei International PTE. Ltd.Inventors: Harya Wicaksana, Zhan Yu, Rui Yu, Theng Tee Yeo, Changqing Xu, Xuesong Chen
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Publication number: 20190014418Abstract: A moving-coil loudspeak includes a vibrating diaphragm, a suspension, a voice coil, a magnetic circuit, and a support. The suspension includes a surround and a first spider. One side of the surround is connected to an outer surface of the vibrating diaphragm. The first spider vertically stands below a connection between the surround and the vibrating diaphragm, and one side of the first spider is connected to an inner surface of the vibrating diaphragm. The voice coil is located below the center of the vibrating diaphragm. The magnetic circuit is located below the voice coil, where a coil on the voice coil is disposed at a central position of a magnetic gap. After the voice coil is powered on, a generated magnetic induction force drives the voice coil to vibrate and produce a sound by using the vibrating diaphragm. The support supports the magnetic circuit.Type: ApplicationFiled: July 9, 2018Publication date: January 10, 2019Inventors: Zhan Yu Bing, Xie hong Zai, Yang Shao Lin
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Publication number: 20180248722Abstract: A system and method for an NFC card for use in asynchronous NFC card emulation mode transmission. The method comprises estimating carrier frequency offset between a carrier frequency of a NFC reader and a carrier frequency of the NFC card, adjusting digital baseband sampling of the baseband sample output at the NFC card emulation mode transmitter based on the estimated carrier frequency offset to obtain an adjusted baseband sample output and modulating a RF transmitter in the NFC card emulation mode transmitter based on the adjusted baseband sample output.Type: ApplicationFiled: April 27, 2018Publication date: August 30, 2018Inventors: Harya WICAKSANA, Zhan YU, Rui YU
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Publication number: 20180212635Abstract: Embodiments of the invention provide a system and method for direct RF sampling a Near Field Communication (NFC) receiver at a rate higher than the carrier frequency by reducing and shifting requirements at a front end analog module to a digital module.Type: ApplicationFiled: March 20, 2018Publication date: July 26, 2018Inventors: Harya WICAKSANA, Zhan YU, Rui YU, Theng Tee YEO, Changqing XU, Xuesong CHEN
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Patent number: 9905041Abstract: Techniques are disclosed for synthesizing depth of field effects in a digital image using ray tracing approximation. For each target pixel in the image, an aperture-shaped kernel is centered about a reference pixel. A cone of rays is traced through the aperture toward the image scene. The trajectory of the rays and the intersections between the rays and objects in the scene are approximated for a given scene depth, focal depth and aperture shape. The color of the pixel lying at the intersection, which may be offset from the target pixel, is sampled. This sampling process is repeated for several apertures bounding the target pixel, where each aperture is centered about a different reference pixel. The resulting color of the target pixel is acquired by integrating the colors of the pixels at each of the resulting intersections.Type: GrantFiled: November 24, 2014Date of Patent: February 27, 2018Assignee: Adobe Systems IncorporatedInventor: Zhan Yu
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Publication number: 20160330432Abstract: Methods and systems for generating three-dimensional (3D) images, 3D light field (LF) cameras and 3D photographs are provided. Light representing a scene is directed through a lens module coupled to an imaging sensor. The lens module includes: a surface having a slit-shaped aperture and a cylindrical lens array positioned along an optical axis of the imaging sensor. A longitudinal direction of the slit-shaped aperture is arranged orthogonal to a cylindrical axis of the cylindrical lens array. The light directed through the lens module is captured by the imaging sensor to form a 3D LF image. A 3D photograph includes a 3D LF printed image of the scene and a cylindrical lens array disposed on the printed image, such that the combination of 3D LF printed image and the cylindrical lens array forms a 3D stereoscopic image.Type: ApplicationFiled: December 23, 2014Publication date: November 10, 2016Applicant: University of DelawareInventors: Jingyi Yu, Xinqing Guo, Zhan Yu
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Patent number: 9390505Abstract: Described is systems and methods for determining the depth of pixels captured in a plenoptic image. The systems and methods may provide a plurality of views of each pixel location in the plenoptic image. One way of providing the plurality of views is to obtaining pixel intensities from the views for each pixel location in the plenoptic image. A variance can then be calculated of the distribution of pixel intensities for each pixel position. If the variance is below a predetermined threshold, the systems may mask out at least one depth plane and then recalculate the variance in the distribution of pixel intensities to determine if the variance is below the threshold.Type: GrantFiled: December 11, 2014Date of Patent: July 12, 2016Assignee: QUALCOMM IncorporatedInventors: Todor Georgiev, Zhan Yu
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Publication number: 20160148415Abstract: Techniques are disclosed for synthesizing depth of field effects in a digital image using ray tracing approximation. For each target pixel in the image, an aperture-shaped kernel is centered about a reference pixel. A cone of rays is traced through the aperture toward the image scene. The trajectory of the rays and the intersections between the rays and objects in the scene are approximated for a given scene depth, focal depth and aperture shape. The color of the pixel lying at the intersection, which may be offset from the target pixel, is sampled. This sampling process is repeated for several apertures bounding the target pixel, where each aperture is centered about a different reference pixel. The resulting color of the target pixel is acquired by integrating the colors of the pixels at each of the resulting intersections.Type: ApplicationFiled: November 24, 2014Publication date: May 26, 2016Applicant: ADOBE SYSTEMS INCORPORATEDInventor: Zhan Yu
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Publication number: 20150193937Abstract: Described is systems and methods for determining the depth of pixels captured in a plenoptic image. The systems and methods may provide a plurality of views of each pixel location in the plenoptic image. One way of providing the plurality of views is to obtaining pixel intensities from the views for each pixel location in the plenoptic image. A variance can then be calculated of the distribution of pixel intensities for each pixel position. If the variance is below a predetermined threshold, the systems may mask out at least one depth plane and then recalculate the variance in the distribution of pixel intensities to determine if the variance is below the threshold.Type: ApplicationFiled: December 11, 2014Publication date: July 9, 2015Inventors: Todor Georgiev, Zhan Yu
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Patent number: 9001921Abstract: Circuits, architectures, methods, algorithms, software, and systems for increasing reliability of data communications using time diversity coding are disclosed. An association circuit is configured to associate a first reliability factor with a first copy of the communicated data and a second reliability factor with a second copy of the communicated data, wherein the first reliability factor is different from the second reliability factor and has a value that is a predetermined function of a known characteristic of the data communications channel at a time that the communicated data passed through the channel. A decoder is configured to recover a reliable value for the communicated data from the first copy, second copy, first reliability factor, and second reliability factor.Type: GrantFiled: April 12, 2013Date of Patent: April 7, 2015Assignee: Marvell International Ltd.Inventors: Runsheng He, Zhan Yu
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Patent number: 8989315Abstract: Methods, software, receivers and systems for communicating information over a cyclostationary channel. The method generally includes interleaving sections of a control sequence with bits of the information. The software and receivers are generally configured to implement one or more aspects of the methods disclosed herein, and the systems generally include those that embody the inventive receivers disclosed herein. The present invention is particularly useful in powerline channels, where certain parameters (such as noise) have time-dependent or periodic variations in value. By distributing the control sequence, the incidence of carrier recovery is reduced, the likelihood of successful packet or frame transmissions is increased, and data may be more reliably communicated.Type: GrantFiled: February 19, 2010Date of Patent: March 24, 2015Assignee: Marvell International Ltd.Inventors: Zhan Yu, Runsheng He
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Patent number: 8982473Abstract: The present invention uses the concave hybrid architecture to form a wide angle projection lens with large numerical aperture. The wide angle projection lens includes a refraction system and a reflection system, wherein the refraction system includes a first lenses group containing a plurality of spherical lenses and at least one spherical lenses, and a second lenses group containing at least two aspheric lenses and at least one spherical lens, and the at least one spherical lens is configured between any two of the at least two aspheric lenses. The present invention is beneficial in reducing the wide angle projection lens in size and is able to effectively overcome the problem in low geometric efficiency, and enable the ultra-short focus projector have compact and portable advantages.Type: GrantFiled: December 21, 2012Date of Patent: March 17, 2015Assignee: Young Optics, Inc.Inventors: Ya-Ling Hsu, Zhan-Yu Liu
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Patent number: 8982265Abstract: The image projection and capture apparatus for projecting an image beam to display an image on a screen and sensing a sensing beam from the image on the screen, the image projection and capture apparatus includes a light source, a light valve, a projection lens, an image capture lens, a dichroic unit, and an image sensor. The light source provides an illumination beam. The light valve is capable of converting the illumination beam to the image beam. The projection lens has a first optical axis. The image capture lens has a second optical axis. The first optical axis and the second optical axis are collinear. The dichroic unit is disposed between the projection lens and the image capture lens. The image sensor is disposed on a light path of the sensing beam.Type: GrantFiled: April 13, 2012Date of Patent: March 17, 2015Assignee: Young Optics Inc.Inventors: Zhan-Yu Liu, Yi-Hsueh Chen, Hsin-Hung Lin, Ya-Ling Hsu, Chao-Shun Chen
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Publication number: 20140118838Abstract: The present invention uses the concave hybrid architecture to form a wide angle projection lens with large numerical aperture. The wide angle projection lens includes a refraction system and a reflection system, wherein the refraction system includes a first lenses group containing a plurality of spherical lenses and at least one spherical lenses, and a second lenses group containing at least two aspheric lenses and at least one spherical lens, and the at least one spherical lens is configured between any two of the at least two aspheric lenses. The present invention is beneficial in reducing the wide angle projection lens in size and is able to effectively overcome the problem in low geometric efficiency, and enable the ultra-short focus projector have compact and portable advantages.Type: ApplicationFiled: December 21, 2012Publication date: May 1, 2014Applicant: Young Optics Inc.Inventors: Ya-Ling Hsu, Zhan-Yu Liu
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Publication number: 20130271635Abstract: The image projection and capture apparatus for projecting an image beam to display an image on a screen and sensing a sensing beam from the image on the screen, the image projection and capture apparatus includes a light source, a light valve, a projection lens, an image capture lens, a dichroic unit, and an image sensor. The light source provides an illumination beam. The light valve is capable of converting the illumination beam to the image beam. The projection lens has a first optical axis. The image capture lens has a second optical axis. The first optical axis and the second optical axis are collinear. The dichroic unit is disposed between the projection lens and the image capture lens. The image sensor is disposed on a light path of the sensing beam.Type: ApplicationFiled: April 13, 2012Publication date: October 17, 2013Applicant: YOUNG OPTICS INC.Inventors: Zhan-Yu Liu, Yi-Hsueh Chen, Hsin-Hung Lin, Ya-Ling Hsu, Chao-Shun Chen
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Patent number: 8533577Abstract: A data encoding system includes an interleaving module, a generating module, and an insertion module. The interleaving module is configured to receive a data stream. The data stream includes a plurality of data blocks. The interleaving module is configured to, for each data block of a selected subset of the plurality of data blocks, swap positions of a pair of adjacent bits of the data block. The generating module is configured to (i) receive the data stream and (ii) for each of the plurality of data blocks, generate at least one corresponding error checking bit. The insertion module is configured to (i) receive the plurality of data blocks as modified by the interleaving module and (ii) generate an output data stream by inserting the at least one corresponding error checking bit into each one of the plurality of data blocks received from the interleaving module.Type: GrantFiled: July 23, 2012Date of Patent: September 10, 2013Assignee: Marvell International Ltd.Inventors: Weishi Feng, Zhan Yu
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Patent number: D820504Type: GrantFiled: March 14, 2017Date of Patent: June 12, 2018Inventor: Zhan Yu
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Patent number: D851070Type: GrantFiled: July 7, 2017Date of Patent: June 11, 2019Assignee: TYMPHANY HK LIMITEDInventors: Zhan Yu Bing, Xie hong Zai, Yang Shao Lin