Patents Represented by Attorney Dirk Brinkman

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  • Plan-based medical image registration for radiotherapy
    Patent number: 8088055
    Abstract: A method determines an error in aligning a patient with a radiation beam. A planning volume V is acquired during treatment planning, and a treatment volume I is acquired during treatment. For each point r in the planning volume and treatment volume to be aligned by a coordinate transformation T, a weighted error DWE is minimized using an objective function F(r, T) applied to the planning volume and the treatment volume weighted by a weighting function W(r) as WE ? ( T ) = ? r ? W ? ( r ) ? F ? ( r , T ) , where W(r) is a function of a target weight WT, a tissue at risk weight WR, and a delivered dose weight WD.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 3, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Yuri Ivanov
  • Zero correlation zone based preamble for oversampled OFDM networks in URWIN
    Patent number: 8089856
    Abstract: In an oversampled orthogonal frequency-division multiplexing (OFDM) orthogonal network, the preamble used for time synchronization does not have an ideal autocorrelation function due to guard bands, which degrade the accuracy of symbol timing. Therefore, a zero-correlation-zone (ZCZ) based preamble is used for time synchronization. Across correlation function (CCF) used for time synchronization is forced to 0 within a certain region around a main lobe. The length of the ZCZ is guaranteed to be larger than a cyclic prefix length of OFDM data symbols synchronization accuracy.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: January 3, 2012
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Philip V. Orlik, Qinghe Du, Chunjie Duan, Zafer Sahinoglu
  • Wireless networks incorporating antenna selection based on received sounding reference signals
    Patent number: 8086272
    Abstract: A method and system selects antennas in a wireless network including a base station and user equipment (UE) transceivers. The base station specifies times and frequencies to transmit sounding reference signals (SRSs), and antennas to use to transmit the SRSs for the specified times and frequencies. The transceivers transmit the SRS according to the specified times, frequencies, and antennas. The base station selects subsets of the set of available sets of antennas, and indicates the selected subset of antennas to the transceiver.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: December 27, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jia Tang
  • Inverse tone mapping for bit-depth scalable image coding
    Patent number: 8085852
    Abstract: A method performs inverse tone mapping of an image in a decoder. For each block of each color channel of the image the following steps are performed. A scaling factor is determined for a current block of the image by adding a predicted scaling factor for the current block to a difference between the predicted scaling factor and the scaling factor of an adjacent block. An offset value for the current block is determined by adding a predicted offset for the current block to a difference between the predicted offset value and the offset value of the adjacent block. The scaling factor and the offset value are applied to pixel intensity values of the current block to produce a mapped block in which a bit-depth of the mapped block is greater than the bit-depth of the current block.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: December 27, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Shan Liu, Anthony Vetro, Woo-Shik Kim
  • Method for filtering of images with bilateral filters and integral histograms
    Patent number: 8081836
    Abstract: The current invention describes a method for filtering an input image with a bilateral filter to produce an output image. The bilateral filter includes a spatial filter and a range filter.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: December 20, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Fatih M. Porikli
  • Method and apparatus for stabilizing galvanometer scanner
    Patent number: 8081362
    Abstract: A galvanometer scanner includes a mechanical support unit engaged with a far end of an optical element. A near end of the optical element is connected to an output shaft of an electric rotary motor. The mechanical support unit maintains an alignment of an axis of rotation of the optical element and an axis of rotation of the electric rotary motor.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: December 20, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Osamah El-Rifai
  • Hybrid automatic repeat requests coding in MIMO networks
    Patent number: 8073071
    Abstract: A method transmits a block of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. A block of symbols is coded with a first code to generate a first block, which is transmitted and received. If a decoding of the first block is incorrect, then block of symbols is coded with the first code and then a second code different than the first code to generate a second block. The second block is transmitted, received and combined with the first block to recover the block of symbols.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: December 6, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Philip V. Orlik, Wataru Matsumoto, Andreas F. Molisch, Zhifeng Tao, Jinyun Zhang
  • Method and system for disseminating witness information in multi-hop broadcast network
    Patent number: 8068016
    Abstract: Information related to a vehicular environment is disseminated in a multi-hop broadcast network of nodes. Vehicles and roadside units are equipped with the nodes. An event is sensed at a location by a source node. In response, zones are associated with respect to the location of the source node. Each zone is logically asymmetric and disjoint from the other zones. An alert message is broadcast, received, and then rebroadcast by other vehicles according to the locations of the vehicles in the zones. The nodes can also disseminate witness information.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: November 29, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Chai Keong Toh
  • Method for decoding codewords transmitted over non-coherent channels in MIMO-OFDM networks using Grassmann codes and superblocks
    Patent number: 8059747
    Abstract: Codewords encoded using non-coherent codes and received at a receiver via non-coherent channels in a multi-input, multiple output (MIMO) network using orthogonal frequency demultiplexing (OFDM) are decode by concatenating multiple adjacent codewords of a received signal into a superblock at the receiver. A projector matrix based on a codebook is predetermining. Each codeword in the superblock is projected onto an orthogonal complement of a correspond transmitted codeword using the projector matrix to obtain a corresponding distance metric of a generalized likelihood ratio test (GLRT) codeword. A minimal distance metric is selected to obtain an estimate of the transmitted codeword corresponding to a transmitted signal.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: November 15, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Philip V. Orlik, Koike-Akino Toshiaki
  • Wireless networks incorporating implicit antenna selection based on received sounding reference signals
    Patent number: 8055301
    Abstract: A method and system selects antennas in a wireless network including a base station and user equipment (UE) transceivers. The base station specifies times and frequencies to transmit sounding reference signals (SRSs), and antennas to use to transmit the SRSs for the specified times and frequencies. The transceivers transmit the SRS according to the specified times, frequencies, and antennas. The stopping and starting of the SRS are specified implicitly. The base station selects subsets of the set of available sets of antennas, and indicates the selected subset of antennas to the transceiver.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Jia Tang
  • Multiple power-multiple access in wireless networks for interference cancellation
    Patent number: 8054776
    Abstract: A method and network communicate packets by assigning, in each one of a set of multiple transmitters, a power level to a packet to be transmitted during a time interval. The power level is selected from a set of power levels available for the set of multiple transmitters. The power levels in the set range from highest to lowest. There is one packet for each transmitter such that there is a set of packets to be transmitted during the time interval. The set of packets is transmitted concurrently during the time interval to enable decoding of at least one of the packets in the set of packets during the time interval.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Andreas F. Molisch, Raymond Yim, Neelesh B. Mehta
  • Method and system for matching audio recording
    Patent number: 8055662
    Abstract: Our invention describes a method and a system for matching securely an unknown audio recording with known audio recordings. A plurality of known audio recordings, each known audio recording associated with an index to information uniquely identifying the known audio recording is stored on a server. An unknown audio recording cross-correlated securely with each of the plurality of known audio recordings to determine a best matching known audio recording, in which the unknown audio recording and the plurality of known audio recordings are encrypted with a public key. A best matching known audio recording is determined securely according to the cross-correlation. Next, the index of the best matching known audio recording is determined securely. Finally, the information associated with the index of the best matching known audio recording is provided securely to a user of the unknown recording.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Paris Smaragdis, Madhusudana Shashanka
  • Method for estimating location of nodes in wireless networks
    Patent number: 8054226
    Abstract: A method localizes a set of nodes in a wireless network that includes a target node having unknown location and a set of anchor nodes having known locations. The set of anchor nodes is partitioned into subsets of anchor nodes, wherein each subset has at least three anchor nodes. A distance from the target node to each of anchor nodes in each subset is measured, to estimate possible locations of the target node. A geometric constraint is applied to each estimated location to determine valid locations, which are then filtered to determine filtered locations. The filtered locations are averaged to determine an initial estimate of the location.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Zafer Sahinoglu, Ghulam M. Bhatti, Jinyun Zhang
  • Method for retrieving items represented by particles from an information database
    Patent number: 8055693
    Abstract: A set of words is converted to a corresponding set of particles, wherein the words and the particles are unique within each set. For each word, all possible partitionings of the word into particles are determined, and a cost is determined for each possible partitioning. The particles of the possible partitioning associated with a minimal cost are added to the set of particles.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 8, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Tony Ezzat, Evandro Gouvea
  • Method for selecting antennas in a wireless networks
    Patent number: 8046029
    Abstract: A method selects antennas in a wireless network including a base station and one or more transceivers. The base station specifies times, subcarriers and subsets of antennas to use to transmit sounding reference signals (SRS) to the base station. Then, the transceiver transmits the SRS according to the specified times and subcarriers using different subsets of the set antennas. The SRS are received in the base station, and the base station selects one of the different subset of the antennas based on the received SRS, and indicates the selected subset of the antennas to the transceiver.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: October 25, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Neelesh B. Mehta, Andreas F. Molisch
  • Method and system for decoding and displaying 3D light fields
    Patent number: 8044994
    Abstract: A method and system acquire and display light fields. A continuous light field is reconstructed from input samples of an input light field of a 3D scene acquired by cameras according to an acquisition parameterization. The continuous light is reparameterized according to a display parameterization and then prefiltering and sampled to produce output samples having the display parametrization. The output samples are displayed as an output light field using a 3D display device. The reconstruction can be performed by interpolating the input samples having the different views.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: October 25, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Anthony Vetro, Sehoon Yea, Wojciech Matusik, Hanspeter Pfister, Matthias Zwicker
  • Method for recognizing traffic signs
    Patent number: 8041080
    Abstract: A method recognizes a set of traffic signs in a sequence of images acquired of a vehicle environment by a camera mounted in a moving vehicle by detecting in each image, a region of interest (ROI) using a parameter space transform. The ROI is tracked and classified as a particular one of the signs. The classifier only uses a same class and a different class, and a regression function to update the classifier.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: October 18, 2011
    Assignee: Mitsubi Electric Research Laboratories, Inc.
    Inventors: Fatih M. Porikli, Andrzej Ruta
  • Method for expanding audio signal bandwidth
    Patent number: 8041577
    Abstract: A method expands a bandwidth of an audio signal by determining a magnitude time-frequency representation |G(?, t) for example audio signals g(t). A set of frequency marginal probabilities PG(?|z) 221 are estimated from |G(?, t)|, and a magnitude time-frequency representation |X(?, t)| is determined from an input signal audio signal x(t). Probabilities P(z), PX(z) and PX(t|z) are determined using PG(?|z)|X(?, t)|. |?(?, t)| is reconstructed according to PzPX(z)PG(?|z)PX(t|z), and |?(?, t)| is transformed to a time domain to obtain a high-quality output audio signal ?(t) corresponding to the input audio signal x(t).
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: October 18, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Paris Smaragdis, Bhiksha R. Ramakrishnan
  • Method for routing packets in wireless ad-hoc networks with probabilistic delay guarantees
    Patent number: 8040810
    Abstract: A method determines an optimal route to deliver a packet from a source node via relay nodes to a destination node in a network. A graph of nodes connected by edges represents possible routes in the network. A probability that the packet arrives at the destination before a deadline time is assigned to each edge. A minimal delay route is selected from the possible routes, and an arrival time for delivering the packet using the minimal delay route is determined. The arrival time is comparing to a deadline time, and the probabilities are scaled accordingly until the minimal delay route is an optimal route.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: October 18, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Matthew Brand, Petar Maymounkov, Andreas F. Molisch
  • Inter-cell interference prediction for frequency resource allocation
    Patent number: 8036674
    Abstract: A method predicts resource allocations in a wireless network including a set of base stations (BSs). Each BS is in a cell, and serves a set of mobile stations. A sequence and rule of resource allocations are defined for all of the BSs. Previous resource allocations are acquired from the BSs in adjacent cells. In each BS, for a next allocation, inter-cell interference (ICI) is predicted independently for the set of MSs in the cell based on the previous resource allocations by the BSs in the adjacent cells and the sequence and rule of resource allocations. Then, each BS allocates the resources to the MSs in the cell based on the ICI and the previous resource allocations.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: October 11, 2011
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Raymond Yim, Jinyun Zhang