Patents Assigned to Applied Science & Technology
  • Patent number: 9246747
    Abstract: Systems and methods which provide an adaptive unified performance management (AUPM) framework for interacting with disparate network elements using techniques adaptive to operational conditions to provide network performance adaptive root cause analysis (ARCA) are shown. An AUPM framework of embodiments of the invention implements a proxy based architecture in which a plurality of proxies are utilized to connect to and perform data communication with the disparate network elements. Centralized performance management is in communication with the proxies to obtain and unify network element data for performance monitoring, alarm reporting, and/or root cause analysis. The performance monitoring, alarm reporting, and root cause analysis provided by centralized performance management of embodiments herein implements adaptive cluster-based analysis to provide robust operation adapted to accommodate various operational scenarios, such as may include time varying conditions and learning based configuration.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: January 26, 2016
    Assignee: Hong Kong Applied Science and Technology Research Co., Ltd.
    Inventors: Siu Ping Chan, Ka Ho Mui, Xiaodong Wang, Chun Sing Joseph Chan, Shenglong Xiao, Hua Xia, Qinghua Liao
  • Patent number: 9235879
    Abstract: Embodiments of apparatuses, systems, and methods for a temporal hole filling are described. Specifically, an embodiment of the present invention may include a depth-based hole filling process that includes a background modeling technique (SGM). Beneficially, in such an embodiment, holes in the synthesized view may be filled effectively and efficiently.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 12, 2016
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Sun Wenxiu, Oscar C. Au, Lingfeng Xu, Yujun Li, Wei Hu, Lu Wang
  • Patent number: 9237014
    Abstract: A re-encryptor compares hashed digests of updated segments and original segments to located changed segments that must be re-encrypted. A new initialization vector is input to a block cipher engine for each changed segment. Since only changed segments need to be re-encrypted, transmission bandwidth to remote encrypted storage may be reduced. The amount of cipher text that is changed by a single update is reduced to a segment. Segments have a variable length and are bound by bits matching a segment delimiter. Each segment may have many fixed-length blocks that are encrypted by the block cipher engine with the same initialization vector for that segment. The segment delimiter is a randomly-generated word that is included with the initialization vectors in the metadata. Variable-length segments limit update disruption of the cipher text while fixed-length blocks are more efficiently encrypted. Combining segments and blocks provides for better re-encryption of updates.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: January 12, 2016
    Assignee: Hong Kong Applied Science & Technology Research Institute Company, Limited
    Inventors: Wing Pan Leung, Yiu Wing Wat
  • Patent number: 9237513
    Abstract: A methods for performing a cell search in multiple antenna wireless systems using a plurality of spatial filters is disclosed, and includes applying a plurality of spatial filters to a plurality of received signal streams to generate a plurality of filtered signal streams. The plurality of received signal streams correspond to signals received at a plurality of receive antennas from a plurality of signal sources (e.g., neighboring cells). In an aspect, the plurality of spatial filters may be predefined spatial filters and may be weighted using a set of predefined filter weights. In an additional or alternative aspect, the plurality of spatial filters may be adaptive spatial filters and may be weighted using a set of dynamically determined filter weights. The method includes detecting physical network identities based on the plurality of filtered signal streams.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: January 12, 2016
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Yin Yang, Jiewei Ding, Yuxian Zhang, Honglei Zhang, Kong Chau Tsang
  • Patent number: 9226114
    Abstract: Systems and methods establish passive-based proximity regions to determine position of a device and an area. Example embodiments may be utilized in a wireless network where passive-based proximity regions are established for one or more access points in a wireless network. When a wireless device enters or moves through such a passive-based proximity region, one or more resources associated with the wireless network or wireless device may recognize the presence of the passive-based region and utilize this information to determine positioning data for the wireless device.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 29, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Chi-Lun Mak, Manming Andrew Hon, Vincent Wan-Ming Lau
  • Patent number: 9219492
    Abstract: A multi-stage Successive-Approximation Register (SAR) pipeline Analog-to-Digital Converter (ADC) has an amplifier between two switched capacitor networks, each controlled by a SAR. The load capacitance of the amplifier is magnified due to the amplifier's gain. This magnified load capacitance can disproportionately increase power consumption. The back plates of the second-stage switched capacitors are connected to the amplifier input using a feedback switch during an amplification phase, so that the second-stage switched capacitors are connected between the input and output of the amplifier as a feedback capacitor, rather than a load capacitor. Reset switches are added to drive both plates of the second-stage switched capacitors to ground during a reset phase before the amplification phase. Thus the second-stage switched capacitors function as both the feedback capacitor and as the switched capacitors controlled by the second SAR.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 22, 2015
    Assignee: Hong Kong Applied Science & Technology Research Institute Company, Limited
    Inventors: Chi Fung Lok, Shiyuan Zheng
  • Patent number: 9219924
    Abstract: This invention discloses an encoding apparatus and a decoding apparatus for scalable video coding such that a non-scalable video decoder is usable for decoding a scalable video bit-stream comprising a base layer bit-stream and an enhancement layer bit-stream. In one embodiment, a source video frame is downscaled to give a downscaled video frame, which is then encoded into the base layer bit-stream. The difference between the source video frame and an up-scaled video frame reconstructed from the downscaled video frame in the base layer bit-stream yields a residual frame. The residual frame is partitioned into a number of residual sub-frames each having a resolution that is the downscaled video frame's resolution. The residual sub-frames are encoded into the enhancement layer bit-stream. Thereby, a non-scalable encoder is usable to encode both the downscaled video frame and the residual sub-frames, allowing both bit-streams to be decodable by employing only one non-scalable decoder.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 22, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Man Yau Chiu, Zhi Bin Lei
  • Patent number: 9217841
    Abstract: A compact camera modules has first, second, and third lens groups that move along an optical axis. A stepping motor is centered on the optical axis rather than offset from the optical axis. The motor has two coils that are fixed in place and a shared rotating magnet. The magnet is attached to a rotating guide that has slots to move the first and second lens groups as it rotates. The two coils are alternately energized to rotate the magnet, the rotating guide, and to move the first and second lens groups for zoom. The magnet has alternating thicker and thinner segments of opposite polarity. The thicker segments exert a greater force on an autofocus coil that is energized to move the third lens for the autofocus function. The same shared rotating magnet is used for both zoom and autofocus functions. A more compact design is possible using a shared magnet.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: December 22, 2015
    Assignee: Hong Kong Applied Science & Technology Research Institute Company, Limited
    Inventors: Kin Ming Fan, Kwok Sing Cheng
  • Patent number: 9204809
    Abstract: The present invention is a blood pressure measuring device comprising an optical sensing unit adapted for detecting optical pulses at a plurality of locations on an external surface of a user. The device also comprises a processing unit coupled to the optical sensing unit for determining an optimal location from the plurality of locations based on the detected optical pulses and a pressure sensing unit adapted for detecting a pressure pulse of the user at a location of measurement. The present invention also discloses a method of measuring a blood pressure of a user using a blood pressure measurement device. The advantage of the present invention is that by using an optical sensing unit to locate the artery of the user, or to compensate the misalignment from the artery, the blood pressure is more accurately determined. With the calibration method, the deficient cuff calibration can be waived in certain circumstances.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: December 8, 2015
    Assignee: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE COMPANY LIMITED
    Inventors: Wenbo Gu, Chun Zhang, Tun Lam, Lap Wai Lydia Leung
  • Publication number: 20150342471
    Abstract: A method of determining stiffness index of an arterial network is disclosed. The method comprises the steps of: obtaining a pulse waveform related to the arterial network; estimating a source pulse based on at least one predetermined feature of the pulse waveform; determining a plurality of characteristics of the pulse waveform based on a relationship between the pulse waveform and the source pulse; and calculating the stiffness index of the arterial network based on the plurality of characteristics of the pulse waveform. An arterial stiffness index measuring device employing the above methodology is also disclosed therein.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 3, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventor: Chi Kit CHENG
  • Patent number: 9196602
    Abstract: A system for bonding a die to a high power dielectric carrier such as a ceramic dielectric core with double-sided conductive layers is described. In the system, the upper conductive layer has a first area whose surface has a first wettability. A second area that at least partially surrounds the first area has a surface with a second wettability that is greater than the first wettability. During bonding, an adhesive material bonding a chip to the substrate spreads among the first area by a downward force placed on the chip. Due to the difference in wettability, the adhesive material then spreads among the second area by a wetting force generated by the greater second wettability of the second area surface causing the chip to be drawn down until reaching a predetermined position. The predetermined position can be determined by substrate protrusions or substrate cavities.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: November 24, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Yuxing Ren, Ziyang Gao
  • Publication number: 20150333732
    Abstract: The present invention is directed to systems and methods which provide an improved compensation filter, as may be used with respect to a decimator, optimally designed using a convex optimization approach. Compensation filters of embodiments of the invention may, for example, be used with respect to a CIC decimator. In accordance with embodiments of the invention, compensation filters are designed with minimum order to approximate target frequency response in the target frequency bands. Additionally or alternatively, compensation filters of embodiments are optimally designed for passband drop and stopband attenuation improvement, such as to satisfy the specified peak ripple in the passband and/or to satisfy the specified peak errors over a set of target sub-bands in the stopband.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 19, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventor: Zhao Shaohua
  • Patent number: 9190961
    Abstract: A Programmable-Gain Amplifier (PGA) has a digital value that programmably adjusts the gain of the analog amplifier. A variable capacitor has several switched sub-capacitors that are enabled by the digital value. Enabled sub-capacitors are switched between a sampled input and a virtual ground on one terminal, and connect to a summing node on the other terminal. The summing node connects to the inverting input of an op amp either through a switch or through a double-sampling capacitor that stores an offset. A feedback capacitor is in parallel with a sampling capacitor during a second clock phase when direct-charge transfer occurs, reducing power consumption of the amplifier. The feedback capacitor samples the sampled input during the first clock phase. The PGA gain is proportional to the sum of capacitances of enabled sub-capacitors. The gain can be adjusted for sensor inputs to an Analog Front-End (AFE), such as for an electro-cardiogram (ECG).
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: November 17, 2015
    Assignee: Hong Kong Applied Science & Technology Research Institute Company, Limited
    Inventors: Ho Ming (Karen) Wan, Kwai Chi Chan, Tin Ho (Andy) Wu
  • Publication number: 20150317513
    Abstract: A method and apparatus for facial recognition by a computing device using an adaptive search window and regional similarity distribution analysis are disclosed herein.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 5, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Jinhui Hu, Yi Tian, Min Chen
  • Publication number: 20150311868
    Abstract: A Programmable-Gain Amplifier (PGA) has a digital value that programmably adjusts the gain of the analog amplifier. A variable capacitor has several switched sub-capacitors that are enabled by the digital value. Enabled sub-capacitors are switched between a sampled input and a virtual ground on one terminal, and connect to a summing node on the other terminal. The summing node connects to the inverting input of an op amp either through a switch or through a double-sampling capacitor that stores an offset. A feedback capacitor is in parallel with a sampling capacitor during a second clock phase when direct-charge transfer occurs, reducing power consumption of the amplifier. The feedback capacitor samples the sampled input during the first clock phase. The PGA gain is proportional to the sum of capacitances of enabled sub-capacitors. The gain can be adjusted for sensor inputs to an Analog Front-End (AFE), such as for an electro-cardiogram (ECG).
    Type: Application
    Filed: April 29, 2014
    Publication date: October 29, 2015
    Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
    Inventors: Ho Ming (Karen) WAN, Kwai Chi CHAN, Tin Ho (Andy) WU
  • Patent number: 9148622
    Abstract: A frame-rate converter reduces halo artifacts along edges of moving objects. Halo artifacts occur on interpolated frames where a moving object covers and uncovers pixels along its edges. Motion estimation among three original frames produces hybrid direction motion vectors that are bi-directional for background and objects, but are unidirectional for covered and uncovered regions, since motion vectors with large matching errors are deleted. Covered regions in the interpolated frame are detected as intersecting only a forward but no backward hybrid motion vector. Bi-directional motion estimation from the hybrid motion vectors of two original frames produces refined motion vectors for the interpolated frame. Refined motion vectors in the covered regions are deleted and replaced with hybrid motion vectors from the original frames. Hybrid motion vectors from the original frames are assigned to the critical covered regions rather than using interpolated vectors in the covered regions, reducing halo artifacts.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 29, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Company, Limited
    Inventors: Xuejiao Liu, King Hung Chiu, Peng Luo, Tim Ka Lung Wong
  • Patent number: 9147113
    Abstract: A computer implemented method for tracking a marker on a deformable surface in augmented reality (AR) applications, comprising: detecting image-key-points in a currently processed video frame of a video-captured scene; performing key-point-correspondence searching and matching the image-key-points with model-key-points are identified from an original image of the marker, comprising: calculating an key-point matching score for each image-key-point; applying a key-point matching score filter on the key-point matching scores; restricting the searching of the image-key-points in the currently processed video frame to within same mesh block determined in a previously processed video frame of the captured video frames; and applying adaptive thresholds on the key-point matching scores in determining successful matches of the image-key-points; performing motion detection of the marker in the video-captured scene and halting the application of the key-point matching score filter and suspending the restriction on the i
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: September 29, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventor: Felix Chow
  • Publication number: 20150269737
    Abstract: Multi view images are generated with reduced flickering. A first depth map is generated from stereo images by stereo-matching. When stereo-matching is poor or varies too much from frame to frame, disparity fallback selects a second depth map that is generated from a single view without stereo-matching, preventing stereo-matching errors from producing visible artifacts or flickering. Flat or textureless regions can use the second depth map, while regions with good stereo-matching use the first depth map. Depth maps are generated with a one-frame delay and buffered. Low-cost temporal coherence reduces costs used for stereo-matching when the pixel location selected as the lowest-cost disparity is within a distance threshold of the same pixel in a last frame. Hybrid view synthesis uses forward mapping for smaller numbers of views, and backward mapping from the forward-mapping results for larger numbers of views. Rotated masks are generated on-the-fly for backward mapping.
    Type: Application
    Filed: March 24, 2014
    Publication date: September 24, 2015
    Applicant: Hong Kong Applied Science & Technology Research Institute Company Limited
    Inventors: Che Yuen Brian LAM, Wei Lun Alan CHEUNG
  • Publication number: 20150259814
    Abstract: This invention relates to a new compound represented by formula (I). Particularly, the new compound is used as an additive in copper electroplating. A chemical structure for the leveler, an electroplating bath containing the same, a method of preparing the additive and a method of electroplating a substrate with the electroplating bath containing the additive are disclosed. The additive compound/molecule of the present invention provides a branched structure at each ends, wherein each of the branches comprises a positively charged nitrogen moiety. The additive compound/molecule is formed by linking the branches having the positive charged nitrogen moieties to the backbone of the additive compound/molecule. This leads to a high charge density novel additive compound/molecule.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 17, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: JIYE LUO, YAOFENG SUN, SHU KIN YAU
  • Publication number: 20150264535
    Abstract: Systems and methods establish passive-based proximity regions to determine position of a device and an area. Example embodiments may be utilized in a wireless network where passive-based proximity regions are established for one or more access points in a wireless network. When a wireless device enters or moves through such a passive-based proximity region, one or more resources associated with the wireless network or wireless device may recognize the presence of the passive-based region and utilize this information to determine positioning data for the wireless device.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 17, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Chi-Lun Mak, Manming Andrew Hon, Vincent Wan-Ming Lau