Patents by Inventor Tinku Acharya

Tinku Acharya 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).

  • Adaptive video bit-rate control
    Publication number: 20040057516
    Abstract: The present disclosure relates to the compression of data and, more particularly, to the compression of video data based at least upon a variable bit rate compression scheme.
    Type: Application
    Filed: September 23, 2002
    Publication date: March 25, 2004
    Inventors: Hyung-Suk Kim, Hyun M. Kim, Tinku Acharya
  • Motion estimation using a context adaptive search
    Publication number: 20040057626
    Abstract: Embodiments of an image signal processing engine that may be employed for motion estimation calculations is described.
    Type: Application
    Filed: September 23, 2002
    Publication date: March 25, 2004
    Inventors: Tinku Acharya, Kalpesh Mehta, Hyun Kim
  • Method for block-based digital image watermarking
    Patent number: 6707928
    Abstract: A method of encoding a watermark into a digital image. The method includes partitioning an original image into blocks and then determining a variance value of each block. The blocks are then arranged according to the variance values. A number of selected blocks are identified, where the number depends upon the size of the watermark. The blocks selected are then arranged by their location. Data from the watermark is used to replace bits in a representation of each of the selected blocks with data from the watermark. A method of decoding is also discussed.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: March 16, 2004
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Bhargab Bikram Bhattacharya, Malay Kumar Kundu, Suman Kumar Mitra, Chivukula Anjaneya Murthy
  • Motion estimation using logarithmic search
    Publication number: 20040047422
    Abstract: Embodiments of an image signal processing engine that may be employed for motion estimation calculations is described.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 11, 2004
    Inventors: Tinku Acharya, Kalpesh Mehta
  • Motion estimation
    Publication number: 20040042551
    Abstract: Embodiments of an image signal processing engine that may be employed for motion estimation calculations is described.
    Type: Application
    Filed: September 4, 2002
    Publication date: March 4, 2004
    Inventors: Tinku Acharya, Kalpesh Mehta
  • Method and apparatus for adaptively sharpening local image content of an image
    Patent number: 6697534
    Abstract: Briefly, in accordance with one embodiment of the invention, a method of sharpening an image includes the following. A crispening parameter is adaptively computed for a local region of a captured image based, at least in part, on a measure of the local contrast and the local brightness. A kernel is applied to the local region of the captured image using the adaptively computed crispening parameter.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: February 24, 2004
    Assignee: Intel Corporation
    Inventors: Yap-Peng Tan, Ping-Sing Tsai, Tinku Acharya
  • Memory based VLSI architecture for image compression
    Patent number: 6694061
    Abstract: An image compression apparatus is discussed that includes a first look-up table providing a quantized code, a second look-up table providing the length of that code, and a predictive coding circuit which generates an address for indexed those look-up tables.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: February 17, 2004
    Assignee: Intel Corporation
    Inventor: Tinku Acharya
  • Method of generating a length-constrained huffman code
    Patent number: 6690306
    Abstract: Embodiments are disclosed of generating a length-constrained Huffman code.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: February 10, 2004
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Ping-Sing Tsai, Hyun M. Kim
  • Image color matching scheme
    Publication number: 20040022433
    Abstract: Embodiments of a color image matching scheme are discussed.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 5, 2004
    Inventors: Tinku Acharya, Tamalika Chaira, Ajay K. Ray
  • Color video coding scheme
    Publication number: 20040017952
    Abstract: Embodiments of a color video coding and decoding scheme are disclosed.
    Type: Application
    Filed: July 25, 2002
    Publication date: January 29, 2004
    Inventors: Tinku Acharya, Prabir K. Biswas
  • Image retrieval using distance measure
    Patent number: 6681060
    Abstract: A Mahalanobis distance measure is used to identify a query image among plural images in a database. The measure may be used to rank the similarity of one or more images to the query image. A variance-covariance matrix is calculated for all images in the database. The variance-covariance matrix is used to calculate the Mahalanobis distance between the query image and one or more images in the database. A range tree may be used to identify likely image candidates for performing the Mahalanobis distance measurement.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: January 20, 2004
    Assignees: Intel Corporation, Indian Statistical Institute
    Inventors: Tinku Acharya, Bhargab B. Bhattacharya, Arijit Bishnu, Malay K. Kundu, Chivukula A. Murthy
  • Method and apparatus for two-dimensional separable symmetric filtering
    Patent number: 6678708
    Abstract: A symmetric digital filter. The filter has the dimensions N rows by N columns. There are a predetermined number of 8-input adders, and a predetermined number of 4-input adders each able to receive inputs from samples of an incoming signal. In addition, there are a predetermined number of parallel multipliers. The parallel multipliers receive output signals from the 8-input adders and the 4-input adders, and multiply the partial sums by coefficients of the digital filter, applying the digital filter to the input signal.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: January 13, 2004
    Assignee: Intel Corporation
    Inventor: Tinku Acharya
  • Multiplierless pyramid filter
    Patent number: 6662200
    Abstract: Embodiments of a multiplierless pyramid filter are described.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: December 9, 2003
    Assignee: Intel Corporation
    Inventor: Tinku Acharya
  • Fuzzy based thresholding technique for image segmentation
    Patent number: 6658399
    Abstract: Embodiments of a fuzzy based thresholding technique for image segmentation are disclosed.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: December 2, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Ajay K. Ray, A. K. V. Subba Rao
  • Method of integrating a watermark into an image
    Patent number: 6654501
    Abstract: In accordance with one embodiment of the invention, a method of integrating a watermark, or portion thereof, into an image, or portion thereof, includes the following. The watermark, or portion thereof, is blended into the image, or portion thereof, so as to appear as noise.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: November 25, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Kannan Raj
  • Variable length coding packing architecture
    Patent number: 6653953
    Abstract: Embodiments of a variable length coding packing architecture are discussed. In this regard, an example method of packing selected portions of separate bit strings into a buffer is presented. The example method comprises using multiplexers (MUXes) to select the desired portions of the separate bit strings to be packed in the buffer, and using MUXes to order the bits of the selected portions for packing in particular buffer locations.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: November 25, 2003
    Assignee: Intel Corporation
    Inventors: Ricardo A. Becker, Tinku Acharya
  • Chip rate selectable square root raised cosine filter for mobile telecommunications
    Patent number: 6650688
    Abstract: A square root raised cosine filter for a mobile transceiver may be adapted to operate with a variety of potential chip rates such as the four chip rates associated with IMT-2000 standard. The signal produced by the filter may be adjusted based on a variety of potential chip rates. One of the adjusted filter signals may be selected as the resulting filter output, depending on the particular chip rate selected for the mobile transceiver.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: November 18, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, George J. Miao
  • Method of generating Huffman code length information
    Publication number: 20030210164
    Abstract: Embodiments of a method of generating Huffman code length information are disclosed. In one such embodiment, a data structure is employed, although, of course, the invention is not limited in scope to the particular embodiments disclosed.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 13, 2003
    Inventors: Tinku Acharya, Ping-Sing Tsai
  • Method of performing Huffman decoding
    Patent number: 6646577
    Abstract: Embodiments of a method of performing Huffman decoding are disclosed. In one such embodiment, a data structure is employed, although, of course, the invention is not limited in scope to the particular embodiments disclosed.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: November 11, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Ping-Sing Tsai
  • Block-matching algorithm for color interpolation
    Patent number: 6639691
    Abstract: What is disclosed is method that interpolates missing color components for an original pixel by utilizing color gravities for surrounding blocks of green pixels. A new pixel is output which has complete color information which is a function of the original pixel and interpolated color components. The interpolated pixel is a true representation of both luminance and chrominance information.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: October 28, 2003
    Assignee: Intel Corporation
    Inventor: Tinku Acharya