Patents Assigned to INSTITUTE OF COMPUTER SCIENCE ("ICS")
  • Patent number: 10158574
    Abstract: A processor-implemented method for regulating the flow rate of data packets in a network, including defining a global constant representing a regularly repeating time period common among flow sources in the network; transmitting current flow rate information from each of the flow sources, and for each flow, to the links traversed by each flow, exactly once during a current period; categorizing each of the flows passing through the links on the network into a category for the current period for each link by comparing the current flow rate information to a previously determined fair-share flow rate for the link; counting, in each link, the flows per category for the current period; determining a current fair-share flow rate for the current period in each link using the results of the categorizing and counting; and providing control instructions to each of the flow sources to regulate the rate of each flow.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: December 18, 2018
    Assignee: FOUNDATION FOR RESEARCH AND TECHNOLOGY—HELLAS (F.O.R.T.H.) INSTITUTE OF COMPUTER SCIENCE (I.C.S.)
    Inventor: Manolis G. H. Katevenis
  • Patent number: 10149048
    Abstract: A processor-implemented method for sound-source enhancement, including: capturing a signal from a sound source using a sensor array having a plurality of sensors, the sensor array being positioned between the sound source and the reflective surface; calculating a half-space propagation model by determining a modified steering vector associated with a plane sound wave produced by the sound source as a function of signal direction and the reflectivity value; calculating a half-space spatial coherence model by dividing a sphere with its center on the reflecting surface into two mirror symmetric parts intersected by a plane to create two half spheres; creating a half-space signal-enhancement module using the half-space propagation model and the half-space coherence model; and applying the half-space signal-enhancement module to the signal.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: December 4, 2018
    Assignee: FOUNDATION FOR RESEARCH AND TECHNOLOGY—HELLAS (F.O.R.T.H.) INSTITUTE OF COMPUTER SCIENCE (I.C.S.)
    Inventors: Nikolaos Stefanakis, Athanasios Mouchtaris
  • Patent number: 9955277
    Abstract: A processor-implemented method for spatial sound characterization is described. In one implementation, each of a plurality of source signals detected by a plurality of sensing devices, is segmented into a plurality of time frames. For each time frame, time-frequency transform of the source signals is derived, an estimated number of sources and at least one estimated direction of arrival corresponding to each of the source signals is obtained. Further, source signals are extracted by spatial separation based at least on the estimated directions of arrival and the estimated number of sources, and separated source signals are processed to yield a reference signal and side information.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: April 24, 2018
    Assignee: FOUNDATION FOR RESEARCH AND TECHNOLOGY-HELLAS (F.O.R.T.H.) INSTITUTE OF COMPUTER SCIENCE (I.C.S.)
    Inventors: Anastasios Alexandridis, Anthony Griffin, Athanasios Mouchtaris
  • Publication number: 20090108900
    Abstract: A computer readable storage medium includes executable instructions to construct a delay element to replicate the timing of critical gates and paths within a segment of an asynchronous circuit. The rise and fall delay mismatch of the delay element is minimized without obeying timing constraints. The position of each output of the delay element is determined to include a globally shared node within the segment and a non-shared local node in the segment.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Applicant: INSTITUTE OF COMPUTER SCIENCE ("ICS")
    Inventors: Christos P. SOTIRIOU, Spyridon LYMPERIS