Sub-nyquist Sampling Patents (Class 348/424.1)
  • Patent number: 9888255
    Abstract: A method for pull frame interpolation includes receiving an encoded bitstream including information representing a plurality of frames of video data, decoding the plurality of frames, including identifying a plurality of motion vectors indicating motion from a first frame of the plurality of video frames to a second frame of the plurality of video frames, identifying an interpolation point between the first frame and the second frame, identifying a plurality of candidate interpolation motion vectors indicating motion from the first frame to the interpolation point and from the second frame to the interpolation point based on the plurality of motion vectors, selecting an interpolation motion vector from the plurality of candidate interpolation motion vectors based on a metric, and generating an interpolated frame at the interpolation point based on the selected interpolation motion vector, which may include correcting an artifact in the interpolated frame by blending the interpolated frame.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: February 6, 2018
    Assignee: GOOGLE INC.
    Inventors: Anil Kokaram, Damien Kelly, Andrew Joseph Crawford
  • Patent number: 9882750
    Abstract: The patent application relates to a method for recovering a sparse communication signal from a receive signal, the receive signal being a channel output version of the sparse communication signal, the channel comprising channel coefficients being arranged to form a channel matrix, the method comprising determining a support set indicating a set of first indices of non-zero communication signal coefficients from the channel matrix and the receive signal, determining an estimate of the sparse communication signal upon the basis of the support set, the channel matrix and the receive signal, determining second indices of communication signal coefficients which are not indicated by the support set, and determining the sparse communication signal upon the basis of the support set, the estimate of the sparse communication signal, the second indices and the channel matrix.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: January 30, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lev Borisovich Rapoport, Yanxing Zeng, Jianqiang Shen, Vladimir Iosifovich Ivanov
  • Patent number: 8760572
    Abstract: A method for constructing an image includes acquiring image data in a first domain. The acquired image data is transformed from the first domain into a second domain in which the acquired image data exhibits a high degree of sparsity. An initial set of transform coefficients is approximated for transforming the image data from the second domain into a third domain in which the image may be displayed. The approximated initial set of transform coefficients is updated based on a weighing of where substantial transform coefficients are likely to be located relative to the initial set of transform coefficients. An image is constructed in the third domain based on the updated set of transform coefficients. The constructed image is displayed.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: June 24, 2014
    Assignees: Siemens Aktiengesellschaft, The University of Arizona
    Inventors: Ali Bilgin, Yookyung Kim, Mariappan S. Nadar
  • Patent number: 8224123
    Abstract: A technique is provided for reducing the size of each of images included in an image signal and generating a high-resolution image with minimized degradation in the image quality from the reduced images. Alias components and motion information that are included in the image signal having the reduced images are used for conversion of the images included in the image signal into a high-resolution image. Low pass filtering is performed on a frequency component in the direction of a motion included in the image signal and a frequency component in a direction other than the direction of the motion. The cut-off frequency of the low pass filter in the direction other than the direction of the motion is lower than the cut-off frequency of the low pass filter in the direction of the motion.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 17, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Hamada, Masahiro Kageyama, Shigeki Nagaya
  • Patent number: 8194735
    Abstract: A video encoding apparatus provides with a generator to generate a decoded image corresponding to an image obtained by decoding an encoded image obtained by encoding an original image by a first prediction scheme, a selector to select one of the original image and the decoded image as an input image according to a flicker of an image, and an encoder to encode the input image by a second prediction scheme to generate encoded data.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: June 5, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsushi Matsumura, Takeshi Chujoh
  • Patent number: 8154657
    Abstract: A data processing method for a high density multimedia interface (HDMI) includes receiving video and audio data, sampling the receiving data according to a sample clock, outputting a sampling pattern according to the sampled receiving data and the sample clock, comparing the sampling pattern with a plurality of predetermined patterns, deciding the timing sequence of the receiving data when the sampling pattern and one of the plurality of predetermined patterns are the same, and outputting the video and audio data according to the correct timing sequence.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: April 10, 2012
    Assignee: Princeton Technology Corporation
    Inventors: Te-Ju Wang, Chih-Feng Juan
  • Patent number: 8144245
    Abstract: A method of determining a machine for operating at an actual site includes establishing a three-dimensional geographical model representing the actual site, determining at least one operation characteristic relating to the operation of each of a set of machines in relation to the model, and predicting at least one performance characteristic for each machine based on the at least one operation characteristic and at least one respective characteristic of the different machines. The method further includes comparing the predicted performance characteristics for the different machines, and determining a target machine based on the comparison.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: March 27, 2012
    Assignee: Caterpillar Inc.
    Inventor: Timothy Allen Vik
  • Patent number: 8116608
    Abstract: According to one of embodiments, a method and apparatus for reproducing video and audio changes a playback speed for video and a playback speed for audio independently of each other. To provide an apparatus and method for controlling the playback speeds shortly before a period in which the video and audio should better be played back at a normal-speed, thereby to reduce the strange feeling the user may have as the playback changes from the high-speed playback to the normal-speed playback, a video signal and an audio signal are first isolated from a content and then demodulated. A playback speed is set for the video signal modulated, and a playback speed is set for the audio signal modulated. The video signal and the audio signal, each set to a playback speed, are output.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Michio Yamashita, Koichi Nakazato, Takashi Mori
  • Publication number: 20110090394
    Abstract: Systems and methods for communication systems with compressive sensing are disclosed. In one embodiment, a method of signal processing includes receiving a data packet at a processor. The data packet includes compressively measured data in wavelet transform coefficients of a signal. The signal is reconstructed using a clustering property of the wavelet transform coefficients.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 21, 2011
    Applicant: FutureWei Technologies, Inc.
    Inventors: Jun Tian, Yu Huang
  • Patent number: 7680344
    Abstract: It is possible to control the number of generated codes while retraining deterioration of an image quality by an encoding circuit constituted so as to select any of a first image signal not decreasing information quantity and a second image signal decreasing information quantity in accordance with the accumulated value of the number of codes.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: March 16, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masami Ebara, Osamu Takae
  • Patent number: 7336302
    Abstract: A frame memory device is employed in a digital camera, for example, to output raster-scanned digital color image signals at lower resolution than that of original image signals. The order of sequentially received original raster-scanned digital color image signals is rearranged, and the rearranged signals are sequentially stored in a memory having a two-dimensional address structure such that vertical addresses represent the order of entry of respective scan lines that constitute the image signals and horizontal addresses represent the order of entry of respective signals that belong to each of the scan lines. The stored rearranged signals are subsampled and read out while skipping horizontal and vertical addresses of the memory at regular intervals. The image signals may comprise YCBCR color signals having a sampling ratio of 4:2:2. Sequentially received C signals in the order of CB?CR?CB?CR, for example, are rearranged in the order of CB?CB?CR?CR.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: February 26, 2008
    Assignee: Nikon Corporation
    Inventor: Toshihisa Kuroiwa