Patents by Inventor Ying Cai

Ying Cai 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).

  • Patent number: 9173151
    Abstract: In a wireless network including a first cell and a second cell, it is determined whether a measure of mobility of a user device meets a mobility criterion, and it is determined whether a size of the second cell meets a cell size criterion. When it is determined that (i) the measure of mobility of the user device meets the mobility criterion and (ii) the size of the second cell meets the cell size criterion, the user device is prevented from being switched from the first cell to the second cell, or at least one of (i) a handover parameter or (ii) a cell reselection parameter is adjusted in order to change a probability that the user device will switch from the first cell to the second cell.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: October 27, 2015
    Assignee: MARVELL WORLD TRADE LTD.
    Inventors: Jihwan P. Choi, Yakun Sun, Ying Cai, Hui-Ling Lou
  • Patent number: 9148890
    Abstract: A device including a first transceiver and a second transceiver. The first transceiver is configured to selectively transmit and receive first signals in a first frequency band according to a schedule. The first signals include at least cellular signals. The second transceiver is configured to selectively transmit and receive second signals in a second frequency band different from the first frequency band. The second signals include at least WiFi signals. An arbiter is configured to generate status reports indicating statuses of channels in the first frequency band and/or the second frequency band, receive the schedule as generated based on the statuses, and selectively modify the status reports based on an expected transmission and/or reception of the first signals by the first transceiver, and/or an expected transmission and/or reception of the second signals by the second transceiver.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: September 29, 2015
    Assignee: Marvell International Ltd.
    Inventors: Jihwan P. Choi, Ying Cai, Yakun Sun, Hui-Ling Lou
  • Patent number: 9138867
    Abstract: An engineered coated abrasive product having a three dimensional pattern of abrasive structures formed by embossing an abrasive slurry formulation that was first surface coated with a functional powder, wherein the abrasive slurry includes green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles and a nanoparticle binder. The coated abrasive product is capable of finishing and repairing defects in surfaces, including coated surfaces.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 22, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Ying Cai, James J. Manning, Jianna Wang
  • Patent number: 9136350
    Abstract: A radio frequency (RF) laterally diffused metal oxide semiconductor (LDMOS) device is disclosed which additionally includes a lightly-doped P-type buried layer under a P-type channel region and a moderately-dope P-type buried layer in the lightly-doped P-type buried layer. The two buried layers result in a lower base resistance for an equivalent parasitic NPN transistor, thereby impeding the occurrence of snapback in the device. Additionally, an equivalent reverse-biased diode formed between the channel region and the buried layers is capable of clamping the drain-source voltage of the device and sinking redundant currents to a substrate thereof. Furthermore, the design of a gate oxide layer of the RF LDMOS device to have a greater thickness at a proximal end to a drain region can help to reduce the hot-carrier effect, and having a smaller thickness at a proximal end to the source region can improve the transconductance of the RF LDMOS device.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: September 15, 2015
    Assignee: SHANGHAI HUAHONG GRACE SEMICONDUCTOR MANUFACTURING CORPORATION
    Inventors: Zhengliang Zhou, Han Yu, Ying Cai, Xi Chen
  • Patent number: 9125216
    Abstract: The present disclosure describes techniques for avoiding interference among multiple radios. In some aspects a communication channel of a first wireless interface of a device is determined to be adjacent to a frequency band in which a second wireless interface of the device is configured to communicate and channel measurement results are altered prior to transmission by the first wireless interface to a base station, effective to prevent the base station from selecting, for use by the first wireless interface, the channel adjacent to the frequency band of the second wireless interface.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: September 1, 2015
    Assignee: Marvell International Ltd.
    Inventors: Jihwan P. Choi, Ying Cai, Hui-Ling Lou, Manyuan Shen
  • Patent number: 9125200
    Abstract: A method, implemented by one or more processors, for scheduling traffic streams in a communication network includes determining, via a processor, a plurality of sets of one or more cell characteristics. Each set of cell characteristics in the plurality of sets of cell characteristics corresponds to a different cell in a plurality of cells. The method also includes determining, via a processor, a first set of one or more traffic characteristics corresponding to a first traffic stream, selecting, via a processor, a first cell from the plurality of cells based on (i) the plurality of sets of cell characteristics and (ii) the first set of traffic characteristics, and assigning, via a processor, the first traffic stream to the first cell for an entire duration of the first traffic stream.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: September 1, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Jihwan P. Choi, Hui-Ling Lou, Leilei Song, Ying Cai
  • Publication number: 20150117006
    Abstract: The embodiment of the utility patent discloses a LED matrix display screen, which comprises multiple horizontal circuit board and vertical circuit board. The multiple horizontal circuit board, equidistantly welded with LED beads, are equidistantly welded on the vertical circuit board. And the vertical circuit board is equipped with the controller which can control the LED lamps welded on the horizontal circuit board. The embodiment of the utility patent LED matrix display screen, through multiple arranged LED lamp, can better display different graphics. Moreover, each row of the LED lamps are equipped on the horizontal circuit board. Result from that it not only will be better to decrease the distance between every LED lamps and reduce the weight whole display screen, but also make it be easily partitioned in order to replace the parts of it and repair it.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 30, 2015
    Applicant: ANMINGLI STAGE LIGHTING MANUFACTURER CO., LTD
    Inventor: Ying CAI
  • Patent number: 9014751
    Abstract: Apparatus having corresponding methods and computer-readable media comprise: a transmitter configured to transmit, according to a first protocol, first wireless signals in a first frequency band; and a receiver configured to receive, according to a second protocol, second wireless signals in a second frequency band, wherein the second frequency band is adjacent to or overlaps the first frequency band; and an arbiter configured to allow the transmitter to transmit the first wireless signals according to the first protocol while the receiver receives the second wireless signals according to the second protocol responsive to at least one of i) a signal power level of the first wireless signals being less than a first signal power threshold; and ii) a signal power level of the second wireless signals being greater than a second signal power threshold.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: April 21, 2015
    Assignee: Marvell International Ltd.
    Inventors: Jihwan P. Choi, Hui-Ling Lou, Ying Cai, Leilei Song, Vladan Petrovic
  • Patent number: 8949092
    Abstract: For most large 3D engineering models, the instance positions of repeating instances of connected components show significant multiple spatial aggregation. The invention uses several KD-trees, each for one cluster of points which are spatially aggregated. The multiple KD-trees generate a relatively short data stream, and thus improve the total compression ratio. A method for encoding points of a 3D mesh model comprises steps of determining that the mesh model comprises repeating instances of a connected component, and determining for each repeating instance at least one reference point, clustering the reference points of the repeating instances into one or more clusters, and encoding the clustered reference points using KD-tree coding, wherein for each cluster a separate KD-tree is generated.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: February 3, 2015
    Assignee: Thomson Licensing
    Inventors: Kang Ying Cai, Yu Jin, Zhi Bo Chen
  • Publication number: 20150007341
    Abstract: A method for using a location-based service while preserving anonymity includes receiving a location associated with a mobile node, receiving an anonymity level associated with the mobile node, computing a region containing the location of the mobile node and a number of footprints based on the anonymity level, wherein each of the footprints from a different user, and providing the region to a location-based service to thereby preserve anonymity of the mobile node. A method also allow a mobile device or its user to specify the anonymity level by selecting a public region consistent with a user's feelings towards desired privacy.
    Type: Application
    Filed: August 29, 2014
    Publication date: January 1, 2015
    Inventors: Ying Cai, Ge Xu
  • Patent number: 8914019
    Abstract: Apparatus having corresponding methods and computer-readable media comprise: a Mobile Wireless Standards (MWS) transceiver configured to transceive MWS signals in accordance with a schedule, wherein the schedule is based on link status reports transmitted by the MWS transceiver as part of the MWS signals; one or more Industrial, Scientific and Medical (ISM) band transceivers, wherein each ISM band transceiver is configured to transceive ISM band signals; and an arbiter configured to modify the link status reports, prior to transmission of the link status reports, based on at least one of i) an expected transmission of the ISM band signals by one of the ISM band transceivers, and ii) an expected reception of the ISM band signals by one of the ISM band transceivers.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: December 16, 2014
    Assignee: Marvell International Ltd.
    Inventors: Jihwan P. Choi, Ying Cai, Yakun Sun, Hui-Ling Lou
  • Patent number: 8907453
    Abstract: A parasitic lateral PNP transistor is disclosed, in which, an N-type implanted region formed in each of two adjacent active regions forms a base region; a P-type doped polysilicon pseudo buried layer located under a shallow trench field oxide region between the two active regions serves as an emitter; and a P-type doped polysilicon pseudo buried layer located under each of the shallow trench field oxide regions on the outer side of the active regions serves as a collector region. The transistor has a C-B-E-B-C structure which alters the current path in the base region to a straight line, which can improve the current amplification capacity of the transistor and thus leads to a significant improvement of its current gain and frequency characteristics, and is further capable of reducing the area and increasing current intensity of the transistor. A manufacturing method of the parasitic lateral PNP transistor is also disclosed.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: December 9, 2014
    Assignee: Shanghai Hua Nec Electronics Co., Ltd.
    Inventors: Fan Chen, Xiongbin Chen, Kai Xue, Keran Xue, Jia Pan, Hao Li, Ying Cai, Xi Chen
  • Patent number: 8884953
    Abstract: 3D mesh models are widely used in various applications for representing 3D objects. These models are made of vertices and corresponding triangles, which can be compressed based on prediction and residuals. The present invention improves the accuracy of parallelogram prediction, particularly near sharp features. The proposed 3D mesh model encoding comprises analyzing the spatial or dihedral angles between triangles, clustering triangles with similar or equal dihedral angles, and defining a representative dihedral angle for each cluster. Triangles of each cluster are then encoded relative to individual prediction triangles having the representative dihedral angle according to the cluster. Additionally, the prediction triangle may be mirrored. An indication of the encoding mode is inserted into each vertex of the encoded bitstream.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: November 11, 2014
    Assignee: Thomson Licensing
    Inventors: Qu Qing Chen, Kang Ying Cai, Jun Teng
  • Patent number: 8879999
    Abstract: Apparatus having corresponding methods and computer-readable media comprise: a first transceiver comprising a controller configured to select one of a plurality of frequency regions, and a transmitter configured to transmit, according to a first protocol, first wireless signals in the one of the plurality of the frequency regions selected by the controller, wherein each frequency region is characterized by a respective type of unwanted interference generated responsive to the transmitter transmitting the first wireless signals in the respective frequency region; an arbiter configured to select one or more frequency channels based on the one of the plurality of the frequency regions selected by the controller; and a second transceiver configured to transceive, according to a second protocol, second wireless signals only in the one or more frequency channels selected by the arbiter.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: November 4, 2014
    Assignee: Marvell World Trade Ltd.
    Inventors: Ying Cai, Jihwan P. Choi, Hui-Ling Lou, Vladan Petrovic, Chuxiang Li
  • Patent number: 8856939
    Abstract: A method for using a location-based service while preserving anonymity includes receiving a location associated with a mobile node, receiving an anonymity level associated with the mobile node, computing a region containing the location of the mobile node and a number of footprints based on the anonymity level, wherein each of the footprints from a different user, and providing the region to a location-based service to thereby preserve anonymity of the mobile node. A method also allow a mobile device or its user to specify the anonymity level by selecting a public region consistent with a user's feelings towards desired privacy.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: October 7, 2014
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Ying Cai, Ge Xu
  • Patent number: 8781486
    Abstract: In a wireless communication system including a plurality of client stations including at least one client station that is not configured to utilize carrier aggregation, different coverage areas correspond to different frequency bands being utilized. Wireless medium resources are allocated and frequency band(s) are assigned, jointly, to the client stations based on one or more coverage areas corresponding to one or more frequency bands in which each client station is located, whether client stations are configured to utilize carrier aggregation, demand factors, and indications of channel quality.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 15, 2014
    Assignee: Marvell International Ltd.
    Inventors: Jihwan P. Choi, Ying Cai, Jiwoong Choi, Hui-Ling Lou
  • Publication number: 20140131796
    Abstract: A radio frequency (RF) laterally diffused metal oxide semiconductor (LDMOS) device is disclosed which additionally includes a lightly-doped P-type buried layer under a P-type channel region and a moderately-dope P-type buried layer in the lightly-doped P-type buried layer. The two buried layers result in a lower base resistance for an equivalent parasitic NPN transistor, thereby impeding the occurrence of snapback in the device. Additionally, an equivalent reverse-biased diode formed between the channel region and the buried layers is capable of clamping the drain-source voltage of the device and sinking redundant currents to a substrate thereof. Furthermore, the design of a gate oxide layer of the RF LDMOS device to have a greater thickness at a proximal end to a drain region can help to reduce the hot-carrier effect, and having a smaller thickness at a proximal end to the source region can improve the transconductance of the RF LDMOS device.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Inventors: Zhengliang Zhou, Han Yu, Ying Cai, Xi Chen
  • Publication number: 20140045498
    Abstract: In a wireless network including a first cell and a second cell, it is determined whether a measure of mobility of a user device meets a mobility criterion, and it is determined whether a size of the second cell meets a cell size criterion. When it is determined that (i) the measure of mobility of the user device meets the mobility criterion and (ii) the size of the second cell meets the cell size criterion, the user device is prevented from being switched from the first cell to the second cell, or at least one of (i) a handover parameter or (ii) a cell reselection parameter is adjusted in order to change a probability that the user device will switch from the first cell to the second cell.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Applicant: MARVELL WORLD TRADE LTD.
    Inventors: Jihwan P. Choi, Yakun Sun, Ying Cai, Hui-Ling Lou
  • Patent number: 8625911
    Abstract: 3D models of the engineering class usually have a large number of connected components, with small numbers of large triangles, often with arbitrary connectivity. To enable compact storage and fast transmission of large 3D mesh models, an efficient compression strategy specially designed for 3D mesh models is provide. A method for encoding a 3D mesh model comprises determining and clustering repeating components, normalizing the components, wherein scaling factors are clustered and orientation axes are clustered, encoding the connected components using references to the clusters, and entropy encoding the connected components.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: January 7, 2014
    Assignee: Thomson Licensing
    Inventors: Kang Ying Cai, Yu Jin, Zhi Bo Chen
  • Patent number: 8603206
    Abstract: An abrasive article comprising abrasive grains bonded with a binder comprising a matrix polymer and an amphiphilic block copolymer dispersed in the matrix polymer. The abrasive article can be a coated abrasive article, such as an engineered abrasive article, including a backing. The binder can bind the abrasive grains to the backing.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: December 10, 2013
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Ying Cai