Patents by Inventor Arijit Biswas
Arijit Biswas 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).
-
Publication number: 20160351177Abstract: The invention relates to estimating tempo information directly from a bitstream encoding audio information, preferably music. Said tempo information is derived from at least one periodicity derived from a detection of at least two onsets included in the audio information. Such onsets are detected via a detection of long to short block transitions (in the bitstream) or/and via a detection of a changing bit allocation (change of cost) regarding encoding/transmitting the exponents of transform coefficients encoded in the bitstream.Type: ApplicationFiled: February 18, 2015Publication date: December 1, 2016Applicant: DOLBY INTERNATIONAL ABInventor: Arijit BISWAS
-
Patent number: 9466275Abstract: The present document relates to methods and systems for estimating the tempo of a media signal, such as audio or combined video/audio signal. In particular, the document relates to the estimation of tempo perceived by human listeners, as well as to methods and systems for tempo estimation at scalable computational complexity. A method and system for extracting tempo information of an audio signal from an encoded bit-stream of the audio signal comprising spectral band replication data is described. The method comprises the steps of determining a payload quantity associated with the amount of spectral band replication data comprised in the encoded bit-stream for a time interval of the audio signal; repeating the determining step for successive time intervals of the encoded bit-stream of the audio signal, thereby determining a sequence of payload quantities; identifying a periodicity in the sequence of payload quantities; and extracting tempo information of the audio signal from the identified periodicity.Type: GrantFiled: October 26, 2010Date of Patent: October 11, 2016Assignee: Dolby International ABInventors: Arijit Biswas, Danilo Hollosi, Michael Schug
-
Patent number: 9442559Abstract: A disclosed method includes accessing characterization data indicating first and second sets of performance characteristics for first and second processing cores of a processor; determining, based on a performance objective and the characterization data, a first power state for the first processing core and a second power state for the second processing core; and applying the first power performance objective to the first processing core and the second power performance objective to the second processing core.Type: GrantFiled: March 14, 2013Date of Patent: September 13, 2016Assignee: Intel CorporationInventors: Arijit Biswas, Michael D. Powell
-
Patent number: 9315776Abstract: In one aspect, the invention is directed to methods of expanding hematopoietic stem cells (HSCs) comprising culturing the HSCs with Wharton's Jelly mesenchymal stem cells (WJSCs), a cell culture medium that has been conditioned with WJSCs, or a combination thereof, thereby producing a HSC culture; and maintaining the HSC culture under conditions in which the HSCs expand in the culture, thereby expanding the HSCs. In another aspect, the invention is directed to a method of transplanting the expanded HSCs in an individual in need thereof. In yet another aspect, the invention is directed to compositions comprising HSCs and Wharton's Jelly mesenchymal stem cells (WJSCs). The composition can further comprise a cell culture medium that has been conditioned with WJSCs.Type: GrantFiled: November 2, 2012Date of Patent: April 19, 2016Assignee: National University of SingaporeInventors: Chui Yee Fong, Tuan Ariffeen Bongso, Arijit Biswas
-
Patent number: 9317561Abstract: Techniques for scene change detection around seed points in media data are provided. Media features of many different types may be extracted from the media data. One or more statistical patterns of media features in a plurality of time-wise intervals around a plurality of seed time points of the media data may be determined using one or more types of features extractable from the media data. At least one of the one or more types of features comprises a type of features that captures structural properties, tonality including harmony and melody, timbre, rhythm, loudness, stereo mix, or a quantity of sound sources as related to the media data. A plurality of beginning scene change points and a plurality of ending scene change points in the media data may be detected, based on the one or more statistical patterns, for the plurality of seed time points in the media data.Type: GrantFiled: December 15, 2011Date of Patent: April 19, 2016Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Barbara Resch, Regunathan Radhakrishnan, Arijit Biswas, Jonas Engdegard
-
Patent number: 9313593Abstract: Techniques for ranking representative segments in media data are provided. Media features of many different types may be extracted from the media data. A plurality of ranking scores may be assigned to a plurality of candidate representative segments. Each individual candidate representative segment in the plurality of candidate representative segments comprises at least one scene in one or more statistical patterns in media features of the media data based on one or more types of features extractable from the media data. Each individual ranking score in the plurality of ranking scores may be assigned to an individual candidate representative segment in the plurality of candidate representative segments. A representative segment to be played to an end user may be selected from the candidate representative segments, based on the plurality of ranking scores.Type: GrantFiled: December 15, 2011Date of Patent: April 12, 2016Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Barbara Resch, Regunathan Radhakrishnan, Arijit Biswas, Jonas Engdegard
-
Publication number: 20160092287Abstract: Apparatus, systems, and methods for Recovery algorithm in memory are described. In one embodiment, a controller comprises logic to receive reliability information from at least one component of a storage device coupled to the controller, store the reliability information in a memory communicatively coupled to the controller, generate at least one reliability indicator for the storage device, and forward the reliability indicator to an election module. Other embodiments are also disclosed and claimed.Type: ApplicationFiled: September 26, 2014Publication date: March 31, 2016Applicant: Intel CorporationInventors: ARIJIT BISWAS, STEPHEN A. RACUNAS, ROBERT F. KWASNICK
-
Patent number: 9275649Abstract: A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values, including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data, but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.Type: GrantFiled: July 7, 2014Date of Patent: March 1, 2016Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Arijit Biswas, Vinay Melkote, Michael Schug, Grant A. Davidson, Mark S. Vinton
-
Publication number: 20160019411Abstract: A computer-implemented system and method for personality analysis based on social network images are provided. A plurality of images posted to one or more social networking sites by a member of these sites are accessed. An analysis of the images is performed. Personality of the member is evaluated based on the analysis of the images.Type: ApplicationFiled: July 15, 2014Publication date: January 21, 2016Inventors: Evgeniy Bart, Arijit Biswas
-
Publication number: 20160019908Abstract: Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuating segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.Type: ApplicationFiled: April 1, 2014Publication date: January 21, 2016Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Per HEDELIN, Arijit BISWAS, Michael SCHUG, Vinay MELKOTE
-
Publication number: 20150352157Abstract: The invention is directed to a method of treating a wound (e.g., to suppress scar formation) in an individual in need thereof comprising contacting the wound with an effective amount of a composition comprising (i) Wharton's jelly stem cells (WJSCs). (ii) a cell culture medium that has been conditioned with WJSCs. (iii) a lysate of WJSCs. (iv) a cell culture medium that has been conditioned with WJSCs exposed to apoptotic skin cells and keloid cells, or (v) a combination thereof. The invention is directed to a medical dressing (e.g., pharmaceutical compositions) comprising Wharton's jelly stem cells (WJSCs), a cell culture medium that has been conditioned with WJSCs, a lysate of WJSCs, a cell culture medium that has been conditioned with WJSCs exposed to apoptotic skin cells and keloid cells, or a combination thereof.Type: ApplicationFiled: August 15, 2013Publication date: December 10, 2015Inventors: Chui Yee Fong, Mahesh Choolani, Arijit Biswas, Tuan Ariffeen Bongso, Seeram Ramakrishna
-
Publication number: 20150317985Abstract: The present document relates to coding. In particular, the present document relates to coding using linear prediction in combination with entropy encoding. A method (600) for determining a general prediction filter for a frame of an input signal (111) is described. The z-transform of the general prediction filter comprises an approximation to the z-transform of a finite impulse response, referred to as FIR, filter with the z variable of the FIR filter being replaced by the z-transform of an allpass filter. The FIR filter comprises a plurality of FIR coefficients (412). The allpass filter exhibits a pole defined by an adjustable pole parameter. The method (600) comprises determining the pole parameter and the plurality of FIR coefficients, such that an entropy of a frame of a prediction error signal (414) which is derived from the frame of the input signal (111) using the general prediction filter defined by the pole parameter and the plurality of FIR coefficients (412) is reduced.Type: ApplicationFiled: December 19, 2013Publication date: November 5, 2015Applicant: DOLBY INTERNATIONAL ABInventor: Arijit BISWAS
-
Patent number: 9135929Abstract: Efficient Context Classification and Gated Loudness Estimation The present document relates to methods and systems for encoding an audio signal. The method comprises determining a spectral representation of the audio signal. The determining a spectral representation step may comprise determining modified discrete cosine transform, MDCT, coefficients, or a Quadrature Mirror Filter, QMF, filter bank representation of the audio signal. The method further comprises encoding the audio signal using the determined spectral representation; and classifying parts of the audio signal to be speech or non-speech based on the determined spectral representation. Finally, a loudness measure for the audio signal based on the speech parts is determined.Type: GrantFiled: April 27, 2012Date of Patent: September 15, 2015Assignee: Dolby International ABInventors: Harald H. Mundt, Arijit Biswas, Rolf Meissner
-
Patent number: 9117440Abstract: The present document relates to audio forensics, notably the blind detection of traces of parametric audio encoding/decoding. In particular, the present document relates to the detection of parametric frequency extension audio coding, such as spectral band replication (SBR) or spectral extension (SPX), from uncompressed waveforms such as PCM (pulse code modulation) encoded waveforms. A method for detecting frequency extension coding history in a time domain audio signal is described.Type: GrantFiled: April 30, 2012Date of Patent: August 25, 2015Assignees: Dolby International AB, Dolby Laboratories Licensing CorporationInventors: Harald H. Mundt, Arijit Biswas, Regunathan Radhakrishnan
-
Patent number: 9081688Abstract: In one embodiment, the present invention includes a method for providing a cache block in an exclusive state to a first cache and providing the same cache block in the exclusive state to a second cache when cores accessing the two caches are executing redundant threads. Other embodiments are described and claimed.Type: GrantFiled: December 30, 2008Date of Patent: July 14, 2015Assignee: Intel CorporationInventors: Glenn J. Hinton, Steven E. Raasch, Sebastien Hily, John G. Holm, Ronak Singhal, Avinash Sodani, Deborah T. Marr, Shubhendu S. Mukherjee, Arijit Biswas, Adrian C. Moga
-
Patent number: 9058282Abstract: A system, processor and method to monitor specific cache events and behavior based on established principles of quantized architectural vulnerability factor (AVF) through the use of a dynamic cache write policy controller. The output of the controller is then used to set the write back or write through mode policy for any given cache. This method can be used to change cache modes dynamically and does not require the system to be rebooted. The dynamic nature of the controller provides the capability of intelligently switching from reliability to performance mode and back as needed. This method eliminates the residency time of dirty lines in a cache, which increases soft errors (SER) resiliency of protected caches in the system and reduces detectable unrecoverable errors (DUE), while keeping implementation cost of hardware at a minimum.Type: GrantFiled: December 31, 2012Date of Patent: June 16, 2015Assignee: Intel CorporationInventor: Arijit Biswas
-
Patent number: 8990512Abstract: A processor includes a core to execute instructions and a cache memory coupled to the core and having a plurality of entries. Each entry of the cache memory may include a data storage including a plurality of data storage portions, each data storage portion to store a corresponding data portion. Each entry may also include a metadata storage to store a plurality of portion modification indicators, each portion modification indicator corresponding to one of the data storage portions. Each portion modification indicator is to indicate whether the data portion stored in the corresponding data storage portion has been modified, independently of cache coherency state information of the entry. Other embodiments are described as claimed.Type: GrantFiled: October 31, 2012Date of Patent: March 24, 2015Assignee: Intel CorporationInventors: Stanislav Shwartsman, Raanan Sade, Larisa Novakovsky, Arijit Biswas
-
Patent number: 8914672Abstract: An apparatus and method is described herein for replacing faulty core components. General purpose hardware is provided to replace core pipeline components, such as execution units. In the embodiment of execution unit replacement, a proxy unit is provided, such that mapping logic is able to map instruction/operations, which correspond to faulty execution units, to the proxy unit. As a result, the proxy unit is able to receive the operations, send them to general purpose hardware for execution, and subsequently write-back the execution results to a register file; it essentially replaces the defective execution unit allowing a processor with defective units to be sold or continue operation.Type: GrantFiled: December 28, 2009Date of Patent: December 16, 2014Assignee: Intel CorporationInventors: Steven E. Raasch, Michael D. Powell, Shubhendu S. Mukherjee, Arijit Biswas
-
Publication number: 20140330556Abstract: Low complexity detection of a time-wise position of a representative segment in media data is described. A subset of offset values is located in a set of offset values in media data using a first type of one or more types of features, which are extractable from (e.g., derivable from components of) the media data. The subset of offset values comprise values that are selected from the set of offset values based on one or more selection criteria. A set of candidate seed time points is identified based on the subset of offset values using a second type of the one or more types of features.Type: ApplicationFiled: December 10, 2012Publication date: November 6, 2014Applicants: DOLBY INTERNATIONAL AB, DOLBY LABORATORIES LICENSING CORPORATIONInventors: Barbara Resch, Regunathan Radhakrishnan, Arijit Biswas, Jonas Engdegard
-
Publication number: 20140324441Abstract: A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values, including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data, but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.Type: ApplicationFiled: July 7, 2014Publication date: October 30, 2014Applicants: DOLBY INTERNATIONAL AB, DOLBY LABORATORIES LICENSING CORPORATIONInventors: Arijit BISWAS, Vinay MELKOTE, Michael SCHUG, Grant A. DAVIDSON, Mark S. VINTON