Patents by Inventor Chris Chung

Chris Chung 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).

  • Publication number: 20180160980
    Abstract: A surgical positioning device cover, kit, and method are provided and are configured for use with a vacuum formable surgical positioning device. The cover includes a main body portion a main opening for receiving the surgical positioning device and at least one pneumatic opening configured to provide access to a valve assembly of the surgical positioning device. The surgical positioning device cover also includes a plurality of straps secured to the main body portion and configured to secure the cover, the surgical positioning device, and a patient to a surgical table.
    Type: Application
    Filed: November 27, 2017
    Publication date: June 14, 2018
    Inventors: Aris John Balderama Arenas, Chris Chung-Ming Huang, Paul M. Korzenecki
  • Publication number: 20180091812
    Abstract: Techniques are disclosed for selecting deblocking filter parameters in a video decoding system. According to these techniques, a boundary strength parameter may be determined based, at least in part, on a bit depth of decoded video data. Activity of a pair of decoded pixel blocks may be classified based, at least in part, on the determined boundary strength parameter, and when a level of activity indicates that deblocking filtering is to be applied to the pair of pixel blocks, pixel block content at a boundary between the pair of pixel blocks may be filtered using filtering parameters derived at least in part based on the bit depth of the decoded video data. The filtering parameters may decrease strength with increasing bit depth of the decoded video data, which improves quality of the decoded video data.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 29, 2018
    Inventors: Mei Guo, Jae Hoon Kim, Jun Xin, Feng Yi, Yeping Su, Dazhong Zhang, Chris Chung, Xiaosong Zhou, Hsi-Jung Wu
  • Publication number: 20170359575
    Abstract: A video coder defines multiple fidelity regions in different spatial areas of a video sequence, each of which may have different fidelity characteristics. The coder may code the different representations in a common video sequence. Where prediction data crosses boundaries between the regions, interpolation may be performed to create like kind representations between prediction data and video content being coded.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 14, 2017
    Inventors: Dazhong Zhang, Hang Yuan, Peikang Song, Jae Hoon Kim, Xing Wen, Sudeng Hu, Xiaosong Zhou, Chris Chung, Hsi-Jung Wu
  • Publication number: 20170359580
    Abstract: Techniques are disclosed by which a coding parameter is determined to encode video data resulting in encoded video data possessing a highest possible video quality. Features may be extracted from an input video sequence. The extracted features may be compared to features described in a model of coding parameters generated by a machine learning algorithm from reviews of previously-coded videos, extracted features of the previously-coded videos, and coding parameters of the previously-coded videos. When a match is detected between the extracted features of the input video sequence and extracted features represented in the model, a determination may be made as to whether coding parameters that correspond to the matching extracted feature correspond to a tier of service to which the input video sequence is to be coded.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 14, 2017
    Inventors: Yeping Su, Xingyu Zhang, Chris Chung, Jun Xin, Hsi-Jung Wu
  • Publication number: 20170359586
    Abstract: Video coding techniques are disclosed for resource-limited destination display devices. Input video data may be coded by converting a first representation of the input video to a resolution of a destination display and base layer coding the converted representation. Additionally, a region of interest may be predicted from within the input video. The predicted ROI may be converted to a resolution of the destination display, and the converted ROI may be enhancement layer coded. The base layer coded data and the enhancement layer data may be transmitted to the destination display where the coded base layer data is decoded and displayed until a zoom event occurs. When a zoom event occurs, both the coded base layer data and the coded enhancement layer data may be decoded and displayed. Thus, the switchover from a first field of view to an ROI view may be performed quickly.
    Type: Application
    Filed: June 10, 2016
    Publication date: December 14, 2017
    Inventors: Jingteng Xue, Yeping Su, Chris Chung, Xiaosong Zhou, Hsi-Jung Wu
  • Publication number: 20170359596
    Abstract: Video coding techniques are disclosed that can accommodate low bandwidth events and preserve visual quality, at least in areas of an image that have high significance to a viewer. Region(s) of interest may be identified from content of input frame that will be coded. Two representations of the input frame may be generated at different resolutions. A low resolution representation of the input frame may be coded according to predictive coding techniques in which a portion outside the region of interest is coded at higher quality than a portion inside the region of interest. A high resolution representation of the input frame may be coded according to predictive coding techniques in which a portion inside the region of interest is coded at higher quality than a portion outside the region of interest. Doing so preserves visual quality, at least in areas of the input image that correspond to the region of interest.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 14, 2017
    Inventors: Jae Hoon Kim, Xiaosong ZHOU, Sudeng Hu, Chris CHUNG, Dazhong ZHANG, Hsi-Jung WU
  • Publication number: 20170357871
    Abstract: Techniques are disclosed for estimating quality of images in an automated fashion. According to these techniques, a source image may be downsampled to generate at least two downsampled images at different levels of downsampling. Blurriness of the images may be estimated starting with a most-heavily downsampled image. Blocks of a given image may be evaluated for blurriness and, when a block of a given image is estimated to be blurry, the block of the image and co-located blocks of higher resolution image(s) may be designated as blurry. Thereafter, a blurriness score may be calculated for the source image from the number of blocks of the source image designated as blurry.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 14, 2017
    Inventors: Jiefu Zhai, Ke Zhang, Yunfei Zheng, Shujie Liu, Albert Keinath, Xiaosong Zhou, Chris Chung, Hsi-Jung Wu
  • Publication number: 20170353704
    Abstract: Embodiments of the present disclosure provide techniques for environment aware supervised HDR tone mapping. According to those techniques, responsive to metadata provided with HDR source video data, the received metadata may be compared to sensor date representing viewing conditions at a display device. Tone mapping corrections to the HDR source video data may be derived from the comparison of the received metadata to the sensor data. The HDR source video data may be altered based on the tone mapping corrections. The altered HDR source video data may be used to drive the display device.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 7, 2017
    Inventors: Yeping Su, Chris Chung, Hsi-Jung Wu, Xiaosong Zhou, Jun Xin, Jun Xu
  • Publication number: 20170347112
    Abstract: Coding and decoding techniques are disclosed in which a plurality of coding parameter sets is transmitted between an encoder and a decoder, each of which is distinguishable from the others by a respective identifier. When a new frame of video is to be coded, an encoder may identify a coding parameter set to be applied during coding, it may code the new frame according to the identified coding parameter set, and it may transmit the coded frame to the decoder along with an identifier of the coding parameter set used during the coding. A plurality of coding parameter sets is persistent at an encoder and the decoder simultaneously.
    Type: Application
    Filed: May 31, 2016
    Publication date: November 30, 2017
    Inventors: Dazhong ZHANG, Jae Hoon KIM, Peikang SONG, Xiaosong ZHOU, Chris CHUNG, Hsi-Jung WU
  • Publication number: 20170340044
    Abstract: A padding assembly suitable for the interior of headgear, such as surgical headgear, includes a padding layer with first and second sides. An attachment layer is provided on the first side of the padding layer for attaching the padding assembly to the headgear. A plurality of comfort layers are stacked one upon the other on the second side of the padding layer. Each comfort layer includes an outer contact layer formed of a comfort material, and an adhesive layer opposite the contact layer for securing each comfort layer to an underlying comfort layer. Each comfort layer may be removed upon becoming soiled to expose the underlying clean comfort layer for a subsequent use.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 30, 2017
    Inventors: Aris John Balderama Arenas, Chris Chung-Ming Huang, Paul M. Korzenecki, Mathew G. Gavronski
  • Publication number: 20170251576
    Abstract: A module includes a PCB including a substrate, a component pad and at least one wire pad, an SMT component mounted to a component pad, a wire fence, a mold compound and a top conductive layer. Each wire pad is connected to ground by a corresponding via extending through the substrate, and the wire fence includes wire loops connected to each wire pad. The mold compound is disposed over the PCB, the SMT component and the wire fence, and defines multiple holes extending partially through the mold compound to top-edges of the wire loops, respectively, where a conductive material fills the holes. The top conductive layer is disposed over the mold compound, and is in electrical contact with the conductive material filling the holes. The wire fence, the conductive material, and the top conductive layer provide shielding of the SMT component from electromagnetic radiation.
    Type: Application
    Filed: February 26, 2016
    Publication date: August 31, 2017
    Inventors: Jin Jeong, Chris Chung, Nitesh Kumbhat, Ashish Alawani
  • Patent number: 9693445
    Abstract: A PCB includes a copper seed layer, a dielectric layer provided on the copper seed layer, a first thermal via and a plurality of second thermal vias disposed around the first thermal via. The first thermal via has a first through-hole in the dielectric layer and a first copper portion filled in the first through-hole, and each of the second thermal vias has a second through-hole in the dielectric layer and a second copper portion filled in the second through-hole. A mounting portion configured to mount a semiconductor device thereon is provided on the first copper portion.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: June 27, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Hyun Mo Ku, Jin Jeong, Deog Soon Choi, Chris Chung
  • Publication number: 20160227641
    Abstract: A PCB includes a copper seed layer, a dielectric layer provided on the copper seed layer, a first thermal via and a plurality of second thermal vias disposed around the first thermal via. The first thermal via has a first through-hole in the dielectric layer and a first copper portion filled in the first through-hole, and each of the second thermal vias has a second through-hole in the dielectric layer and a second copper portion filled, in the second through-hole. A mounting portion configured to mount a semiconductor device thereon is provided on the first copper portion.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 4, 2016
    Inventors: Hyun Mo Ku, Jin Jeong, Deog Soon Choi, Chris Chung
  • Publication number: 20160204077
    Abstract: An electronic device is manufactured by providing a substrate on which a pad including an organic solderability preservative (OSP) film is formed, mounting a die on the substrate such that the die is electrically connected to the pad, performing a molding process on the die mounted on the substrate, and thereafter, forming an oxide film on the substrate by using an oxidation process on the substrate.
    Type: Application
    Filed: January 14, 2015
    Publication date: July 14, 2016
    Inventors: Hyun Mo Ku, Jin Jeong, Deog Soon Choi, Chris Chung
  • Patent number: 9192048
    Abstract: A bonding pad for use in attaching a semiconductor chip to a printed circuit board, includes: a copper layer; an organic layer disposed over the copper layer in a pattern such that part of the copper layer is exposed; and a gold layer disposed over the organic layer and in contact with the exposed part of the copper layer.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: November 17, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Jeong, Chris Chung, Deog Soon Choi, Young Ho Lee, Yong-Ik Choi
  • Patent number: 9151778
    Abstract: A test socket for connecting a device under test (DUT) electrically to a high-frequency power source comprises a plurality of pogo pins each having an electrode, an electron-to-heat conversion plate supporting bottoms of the pogo pins, the electron-to-heat conversion plate configured to convert kinetic energy of free electrons emitted from the pogo pins to thermal energy, and a heat sink wall formed on the electron-to-heat conversion plate, the heat sink wall having a predetermined height and isolating the plurality of pogo pins from one another.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: October 6, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Jeong, William Lam, Chris Chung
  • Publication number: 20150207575
    Abstract: An apparatus for testing an electronic device in response to a radio frequency (RF) input signal includes an RF input signal generation source, a noise blocking unit, an RF signal transmission medium, a passband measurement unit, and a control unit. The RF input signal generation source generates the RF input signal. The noise blocking unit has a passband for passing the RF input signal and blocking noise to provide a noise blocked RF input signal. The RF signal transmission medium transmits the noise blocked RF input signal to the electronic device. The passband measurement unit measures the passband of the noise blocking unit based on the noise blocked RF input signal and outputs a passband value. The control unit performs feedback control of the passband by varying a control signal output to the noise blocking unit based on the passband value, so that the passband falls within a target range.
    Type: Application
    Filed: January 21, 2014
    Publication date: July 23, 2015
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Jeong, Chris Chung
  • Patent number: 9072168
    Abstract: An electromagnetic interference blocking device is provided for blocking electromagnetic interference between transmission lines formed on a surface of a circuit board. The electromagnetic interference blocking device includes a body configured to be inserted into a slot formed in the surface of the circuit board between the transmission lines, the body including a bottom portion having a comb shape insertable within the slot.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: June 30, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Jeong, William Lam, Chris Chung
  • Patent number: 9062968
    Abstract: A loading apparatus for loading a printed circuit board (PCB) stack including one or more PCB layers and transferring the PCB stack to an inspection probe includes a movable support unit, a guide unit and a cover. The guide unit is provided on the support unit and defines a depression portion in which the PCB stack is mounted. The cover is configured to cover the depression portion of the guide unit when closed, where the cover has multiple protrusions extending from a lower surface, which press the PCB stack into the depression portion when the cover is closed.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: June 23, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Jeong, Chris Chung, Tae Eun Kim
  • Publication number: 20150082616
    Abstract: A method is provided for selecting an optimal manufacturing process for producing printed circuit boards. The method includes measuring electrical characteristics of a reference printed circuit board having circuitry; producing two or more printed circuit boards using two or more candidate manufacturing processes, respectively, each produced printed circuit board having circuitry that is the same as the circuitry of the reference printed circuit board; measuring electrical characteristics of each of the produced printed circuit boards; and selecting a candidate manufacturing process of the two or more candidate manufacturing processes based on the measured electrical characteristics of the reference printed circuit board.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Jeong, Chris Chung, Tae Eun Kim