Patents by Inventor Shan Cheng

Shan Cheng 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).

  • Composite cover assembly for electronic devices
    Patent number: 9626024
    Abstract: Describe herein are electronic devices that includes a display stack having a composite cover component atop a display component. In some instances, the composite cover component includes a top layer and a bottom layer formed from an inorganic material and at least one inner layer formed from an organic material. In other instances, the composite cover component includes a top layer and a bottom layer formed from an organic material and at least one inner layer formed from an inorganic material.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: April 18, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Hung-Bing Tan, David Eric Peters, Shan Cheng, Shankar Ganapathysubramanian
  • Method of reference signal allocation in wireless communication systems
    Patent number: 9628233
    Abstract: A method is provided for determining reference signal positions in a frequency-time domain in an Orthogonal Frequency Division Multiple Access (OFDMA) system. A plurality of sub-carriers are selected in one resource block according to a predetermined mother pattern for reference signal allocation. When a single resource block is assigned for transmission to a user, the reference signal positions are determined corresponding to the plurality of selected sub-carriers in the single resource block. When multiple resource blocks are assigned for transmission to a user, the reference signal positions are determined in the multiple resource blocks by reducing a number of the plurality of selected sub-carriers in the mother pattern for at least one of the multiple resource blocks.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: April 18, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Shan Cheng, Sung Tae Kim, Jin Kyu Han
  • Method and apparatus for wireless communication on multiple spectrum bands
    Patent number: 9468015
    Abstract: A method and apparatus for simultaneously communicating on at least two carrier frequencies, of which at least one carrier frequency is a licensed band and at least one carrier frequency is an unlicensed band, includes broadcasting an operating status of the unlicensed band to a receiver device, collecting feedback data regarding channel conditions from the receiver device for both the licensed band and unlicensed band, determining, when a bandwidth request is received from the receiver device, whether to use the unlicensed band based on the channel conditions, transmitting an unlicensed band scheduling indication to the receiver device, and communicating with the receiver device using both the licensed band and the unlicensed band according to the transmitted unlicensed band scheduling indication.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 11, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Shan Cheng, Rakesh Taori
  • METHOD AND APPARATUS FOR WIRELESS COMMUNICATION ON MULTIPLE SPECTRUM BANDS
    Publication number: 20160014797
    Abstract: A method and apparatus for simultaneously communicating on at least two carrier frequencies, of which at least one carrier frequency is a licensed band and at least one carrier frequency is an unlicensed band, includes broadcasting an operating status of the unlicensed band to a receiver device, collecting feedback data regarding channel conditions from the receiver device for both the licensed band and unlicensed band, determining, when a bandwidth request is received from the receiver device, whether to use the unlicensed band based on the channel conditions, transmitting an unlicensed band scheduling indication to the receiver device, and communicating with the receiver device using both the licensed band and the unlicensed band according to the transmitted unlicensed band scheduling indication.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Inventors: Shan CHENG, Rakesh TAORI
  • METHOD AND APPARATUS FOR WIRELESS COMMUNICATION ON MULTIPLE SPECTRUM BANDS
    Publication number: 20160014798
    Abstract: A method and apparatus for simultaneously communicating on at least two carrier frequencies, of which at least one carrier frequency is a licensed band and at least one carrier frequency is an unlicensed band, includes broadcasting an operating status of the unlicensed band to a receiver device, collecting feedback data regarding channel conditions from the receiver device for both the licensed band and unlicensed band, determining, when a bandwidth request is received from the receiver device, whether to use the unlicensed band based on the channel conditions, transmitting an unlicensed band scheduling indication to the receiver device, and communicating with the receiver device using both the licensed band and the unlicensed band according to the transmitted unlicensed band scheduling indication.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Inventors: Shan CHENG, Rakesh TAORI
  • VOLTAGE GENERATING CIRCUIT AND PRE-DRIVING SIGNAL GENERATING MODULE
    Publication number: 20150355663
    Abstract: A voltage generating circuit including a pre-driving unit and a voltage generating unit is provided. The pre-driving unit receives an oscillation signal and enhances a driving capability of the oscillation signal to generate a pre-driving signal. The voltage generating unit receives an input signal and the pre-driving signal, and generates an output signal according to the input signal and the pre-driving signal. The voltage generating unit generates a voltage signal according to the pre-driving signal. One of the pre-driving unit and the voltage generating unit adjusts a slew rate or a ringing component of the voltage signal by using the pre-driving signal. A pre-driving signal generating module for driving a voltage generating circuit is also provided.
    Type: Application
    Filed: March 11, 2015
    Publication date: December 10, 2015
    Inventors: Hsiang-Yi Chiu, Lan-Shan Cheng
  • Adjusting structural characteristics of a device
    Patent number: 9208664
    Abstract: A structure of a device, such as a surface coating, is composed of one or more materials that are arranged to change one or more characteristics in response to a stimulus, such as an electrical signal, a magnetic field, application of thermal energy, and so forth. The changed characteristics may include a tactile characteristic, a visual characteristic, or other type of characteristic that is perceivable by a user of the device. A state for the adjustable structure may be determined based on user preference data that is stored on the device or input by a user through a user interface. The state for the adjustable structure may also be automatically determined based on device motion, orientation, environment factors, and so forth.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: December 8, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: David Eric Peters, Bobby Dean Landreth, John Avery Howard, Shan Cheng, Edward A Liljegren
  • Phytase having improved enzymatic activity
    Patent number: 9194010
    Abstract: A phytase having improved enzymatic activity is disclosed. The phytase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Valine at position 90 with Threonine. Alternatively, the phytase has a modified amino acid sequence of SEQ ID NO: 6, wherein the modification is a substitution of Asparagine at position 204 with Alanine or a substitution of Serine at position 206 with Alanine.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: November 24, 2015
    Assignee: DONGGUAN APAC BIOTECHNOLOGY CO., LTD.
    Inventors: Rey-Ting Guo, Tzu-Hui Wu, Ya-Shan Cheng, Jian-Wen Huang, Hui-Lin Lai, Cheng-Yen Lin, Ting-Yung Huang
  • Resource allocation method and apparatus for wireless communication system
    Patent number: 9161319
    Abstract: A resource allocation method of a base station in a wireless communication system based on a radio frame including a plurality of subframes including at least one first-type subframe and at least one second-type subframe is provided. The method includes generating first-type downlink control information including resource allocation information on the first-type subframe, generating second-type downlink control information including resource allocation information on the second-type subframe, and transmitting the first-type subframe including the first-type downlink control information and the second-type downlink control information, wherein the second-type subframe is transmitted with a lower transmit power than the transmit power of the first-type subframe.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: October 13, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shan Cheng, Joon Young Cho
  • DEVICE AND METHOD FOR COMMUNICATING CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS) IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20150124758
    Abstract: A method for wireless communication by a terminal, a method for wireless communication by a base station, the terminal, and the base station, are provided. The method for wireless communication by the terminal includes receiving first information comprising a muting subframe interval, a subframe offset, and a muting position of a resource element in a resource block, checking presence of a data in a subframe, determining the resource element to be muted in the subframe based on the muting subframe interval, the subframe offset, and the muting position, if the data is present, and receiving the data on a physical downlink shared channel (PDSCH) based on the result of the determining step.
    Type: Application
    Filed: January 8, 2015
    Publication date: May 7, 2015
    Inventors: Youn Sun KIM, Jin Kyu HAN, Sung Tae KIM, Myung Hoon YEON, Shan CHENG, In Ho LEE
  • ?-mannanase having improved production yields and enzymatic activity
    Patent number: 8999695
    Abstract: A ?-mannanase having increased production yield and enzymatic activity is disclosed. The ?-mannanase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Tyrosine at position 25 with Histidine.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: April 7, 2015
    Assignee: DongGuan APAC Biotechnology Co., Ltd.
    Inventors: Rey-Ting Guo, Jian-Wen Huang, Ya-Shan Cheng, Tzu-Hui Wu, Hui-Lin Lai, Cheng-Yen Lin, Ting-Yung Huang
  • Antenna allocation apparatus and method for cellular mobile communication system
    Patent number: 9001677
    Abstract: A method and apparatus for selecting and allocating antennas efficiently are provided. The method includes transmitting, to a User Equipment (UE), information indicating a configuration of a plurality of Channel Status Information Reference Signals (CSI-RSs) through UE specific signaling during an initial access attempt with the UE; receiving, from the UE, CSI-RS measurement results indicating configured CSI-RSs; transmitting CSI-RSs corresponding to a set of available distributed ports (D-ports) based on received signal strength information included in results of the CSI-RS measurement; and determining a CSI-RS of a selected D-port set for use in communications based on feedback information received from the UE.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Youn Sun Kim, Young Bum Kim, Hyo Jin Lee, Joon Young Cho, Ju Ho Lee, Jin Kyu Han, Shan Cheng
  • Replenishing compositions and methods of replenishing pretreatment compositions
    Patent number: 8951362
    Abstract: Disclosed are replenisher compositions and methods of replenishing pretreatment compositions. The methods include adding a replenisher composition to a pretreatment composition wherein the replenisher composition includes: (a) a dissolved complex metal fluoride ion wherein the metal ion comprises a Group IIIA metal, Group IVA metal, Group IVB metal, or combinations thereof; (b) a component comprising an oxide, hydroxide, or carbonate of Group IIIA, Group IVA, Group IVB metals, or combinations thereof; and optionally (c) a dissolved metal ion comprising a Group IB metal, Group IIB metal, Group VIIB metal, Group VIII metal, Lanthanide Series metal, or combinations thereof.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 10, 2015
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Shan Cheng, James D. Chant, Nicephoros A. Fotinos, Mark McMillen, Edward F. Rakiewicz, David A. Raney
  • PHYTASE HAVING IMPROVED ENZYMATIC ACTIVITY
    Publication number: 20150031110
    Abstract: A phytase having improved enzymaic activity is disclosed. The phytase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Valine at position 90 with Threonine. Alternatively, the phytase has a modified amino acid sequence of SEQ ID NO: 6, wherein the modification is a substitution of Asparagine at position 204 with Alanine or a substitution of Serine at position 206 with Alanine.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Inventors: Rey-Ting Guo, Tzu-Hui Wu, Ya-Shan Cheng, Jian-Wen Huang, Hui-Lin Lai, Cheng-Yen Lin, Ting-Yung Huang
  • BETA-MANNANASE HAVING IMPROVED ENZYMATIC ACTIVITY
    Publication number: 20140315273
    Abstract: A ?-mannanase having increased enzymaic activity is disclosed. The ?-mannanase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Tyrosine at position 216 with Tryptophan.
    Type: Application
    Filed: September 5, 2013
    Publication date: October 23, 2014
    Applicant: Dongguan APAC Biotechnology CO., Ltd.
    Inventors: Rey-Ting Guo, Jian-Wen Huang, Ya-Shan Cheng, Tzu-Hui Wu, Hui-Lin Lai, Cheng-Yen Lin, Ting-Yung Huang
  • ?-mannanase having improved enzymatic activity
    Patent number: 8865444
    Abstract: A ?-mannanase having increased enzymaic activity is disclosed. The ?-mannanase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Tyrosine at position 216 with Tryptophan.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: October 21, 2014
    Assignee: Dongguan APAC Biotechnology Co., Ltd.
    Inventors: Rey-Ting Guo, Jian-Wen Huang, Ya-Shan Cheng, Tzu-Hui Wu, Hui-Lin Lai, Cheng-Yen Lin, Ting-Yung Huang
  • METHOD AND APPARATUS FOR WIRELESS COMMUNICATION ON MULTIPLE SPECTRUM BANDS
    Publication number: 20140254524
    Abstract: A method and apparatus for simultaneously communicating on at least two carrier frequencies, of which at least one carrier frequency is a licensed band and at least one carrier frequency is an unlicensed band, includes broadcasting an operating status of the unlicensed band to a receiver device, collecting feedback data regarding channel conditions from the receiver device for both the licensed band and unlicensed band, determining, when a bandwidth request is received from the receiver device, whether to use the unlicensed band based on the channel conditions, transmitting an unlicensed band scheduling indication to the receiver device, and communicating with the receiver device using both the licensed band and the unlicensed band according to the transmitted unlicensed band scheduling indication.
    Type: Application
    Filed: May 20, 2014
    Publication date: September 11, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Shan CHENG, Rakesh TAORI
  • Automatic mode switch portable electronic device
    Patent number: 8832480
    Abstract: A portable electronic device having automatic power supply mode switching is provided. The portable electronic device includes a micro-sensor and a control circuit. The control circuit controls operations of the electronic device, the micro-sensor senses whether the electronic device is carried or worn by a user. When the electronic device operates in a normal mode, and if the electronic device is not carried or worn for a time longer than a buffer period of a predetermined interval, the control circuit switches to a sleep mode, which results in lower power consumption.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: September 9, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Yen-Lin Lee, Shan-Cheng Sun, Chih-Cheng Ku, He-Ge Chen
  • METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK CONTROL INFORMATION FOR RESOUCE ALLOCATION IN A WIRELESS COMMUNICATION SYSTEM
    Publication number: 20140241287
    Abstract: A method and apparatus for transmitting and receiving Downlink Control Information (DCI) in a wireless communication system. A method for transmitting DCI by a base station includes generating the DCI including at least one of a data format indicator for at least one Transport Block (TB), and a DeModulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and sending the DCI to a terminal. The DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Shan CHENG, Jin Kyu Han, Youn Sun Kim
  • Integrated circuit chip and testing method capable of detecting connection error
    Patent number: 8803544
    Abstract: An integrated circuit chip is provided. The integrated circuit chip includes a pad, a first resistor, a second resistor, a first switch, a second switch and a controller. The first resistor and the first switch are serially connected between the pad and a first reference voltage terminal. The second resistor and the second switch are serially connected between the pad and a second reference voltage terminal. The controller selectively turns on and off the first and second switches according to an error determining mechanism. The error determining mechanism determines whether an error condition associated with the pad is present.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: August 12, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Chih-Cheng Ku, Shan-Cheng Sun, You-Kuo Wu