Patents by Inventor Diptesh Das

Diptesh Das 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).

  • Patent number: 10827981
    Abstract: System and method for evaluating a cognitive load on a user, corresponding to a stimulus is disclosed. Electroencephalogram (EEG) data corresponding to the stimulus of a user is received. The stimulus corresponds to a mental task performed by the user. The EEG data is split into a plurality of slots. A slot of the plurality of slots comprises a subset of the EEG data. One or more EEG features are extracted from the subset of the EEG data. The one or more EEG features are represented in one of a frequency domain and a time domain. A plurality of data points present in the one or more EEG features is grouped into two or more clusters using an unsupervised learning technique. The two or more clusters comprise one or more data points of the plurality of data points. The one or more data points correspond to a level of the cognitive load.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: November 10, 2020
    Assignee: Tata Consultancy Services Limited
    Inventors: Diptesh Das, Debatri Chatterjee, Arijit Sinharay, Aniruddha Sinha
  • Patent number: 10499823
    Abstract: Disclosed is a method and system for selection of Electroencephalography (EEG) channels valid for determining cognitive load of subject. According to one embodiment, EEG signals are obtained from EEG channels associated with subject performing cognitive tasks are received. Time-frequency features of EEG signals are extracted for a frequency band comprise maximum energy value, minimum energy value, average energy value, maximum frequency value, minimum frequency value, and average frequency value. Weight of an EEG channel associated with time-frequency feature is derived using statistical learning technique. Binary values for EEG channels corresponding to time-frequency feature are assigned using weight of EEG channel associated with time-frequency feature.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: December 10, 2019
    Assignee: Tata Consultancy Services Limited
    Inventors: Arijit Sinharay, Aniruddha Sinha, Diptesh Das, Debatri Chatterjee
  • Publication number: 20160242699
    Abstract: System and method for evaluating a cognitive load on a user, corresponding to a stimulus is disclosed. Electroencephalogram (EEG) data corresponding to the stimulus of a user is received. The stimulus corresponds to a mental task performed by the user. The EEG data is split into a plurality of slots. A slot of the plurality of slots comprises a subset of the EEG data. One or more EEG features are extracted from the subset of the EEG data. The one or more EEG features are represented in one of a frequency domain and a time domain. A plurality of data points present in the one or more EEG features is grouped into two or more clusters using an unsupervised learning technique. The two or more clusters comprise one or more data points of the plurality of data points. The one or more data points correspond to a level of the cognitive load.
    Type: Application
    Filed: September 12, 2014
    Publication date: August 25, 2016
    Applicant: Tata Consultancy Services Limited
    Inventors: Diptesh Das, Debatri Chatterjee, Arijit Sinharay, Aniruddha Sinha
  • Patent number: 9357242
    Abstract: A method and system for tracking of objects in a video is disclosed. The method of the present invention enables user to indicate a boundary-box to the identified object of interest in the broadcast video on television or any other communication media. The object indicted in the boundary-box is than tracked by the users connected in a social community network in the upcoming video frames of the broadcasted video. The tracked object is then tagged by the users in the social community network. Further, the present invention enables augmentation of the tracked object in the video by extracting additional information from the online service providers. The augmentation and tagging of the object generates metadata related to the object. The metadata generated is stored on a server to track the object in future based on the metadata related to the object.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 31, 2016
    Assignee: Tata Consultancy Services Limited
    Inventors: Priyanka Sinha, Rohit Kumar Gupta, Avik Ghose, Bhaumik Chirabrata, Diptesh Das
  • Publication number: 20160128593
    Abstract: Disclosed is a method and system for selection of Electroencephalography (EEG) channels valid for determining cognitive load of subject. According to one embodiment, EEG signals are obtained from EEG channels associated with subject performing cognitive tasks are received. Time-frequency features of EEG signals are extracted for a frequency band comprise maximum energy value, minimum energy value, average energy value, maximum frequency value, minimum frequency value, and average frequency value. Weight of an EEG channel associated with time-frequency feature is derived using statistical learning technique. Binary values for EEG channels corresponding to time-frequency feature are assigned using weight of EEG channel associated with time-frequency feature.
    Type: Application
    Filed: March 23, 2015
    Publication date: May 12, 2016
    Inventors: Arijit Sinharay, Aniruddha Sinha, Diptesh Das, Debatri Chatterjee
  • Patent number: 9208376
    Abstract: Method(s) and system(s) for identification of an unknown person are disclosed. The method includes receiving skeleton data comprises data of multiple skeleton joints of the unknown person from skeleton recording devices. The method further includes extracting G gait feature vectors from the skeleton data. Further, the method includes classifying each gait feature vector into one of N classes based on a training dataset for N known persons and computing a classification score for each class. The method also includes clustering the training dataset into M clusters based on M predefined characteristic attributes of the known persons, tagging each gait feature vector with one of the M clusters based on a distance between a respective gait feature vector and cluster centers of M clusters, and determining a clustering score for each M cluster. The method further includes identifying the unknown person based on clustering scores and classification scores.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: December 8, 2015
    Assignee: TATA CONSULTANCY SERVICES
    Inventors: Kingshuk Chakravarty, Aniruddha Sinha, Diptesh Das, Rohan Banerjee, Amit Konar, Sudeepto Dutta
  • Patent number: 9185462
    Abstract: The present invention provides a method and system for implementation of an interactive television application. Particularly, the invention provides method and system for designing and implementation of synchronized interactive television applications using quick response (QR) code, wherein the quick response (QR) code is used to tag the broadcasted television content. More particularly, the invention provides method and system for decoding the quick response (QR) code at the receiver side to provide a universal resource locator (URL) which hosts augmented services for the content on the interactive television as well as on the secondary communication device.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: November 10, 2015
    Assignee: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Diptesh Das, Avik Ghose, Priyanka Sinha, Provat Biswas
  • Publication number: 20140101691
    Abstract: A method and system for tracking of objects in a video is disclosed. The method of the present invention enables user to indicate a boundary-box to the identified object of interest in the broadcast video on television or any other communication media. The object indicted in the boundary-box is than tracked by the users connected in a social community network in the upcoming video frames of the broadcasted video. The tracked object is then tagged by the users in the social community network. Further, the present invention enables augmentation of the tracked object in the video by extracting additional information from the online service providers. The augmentation and tagging of the object generates metadata related to the object. The metadata generated is stored on a server to track the object in future based on the metadata related to the object.
    Type: Application
    Filed: June 7, 2012
    Publication date: April 10, 2014
    Applicant: Tata Consultancy Services Limited
    Inventors: Priyanka Sinha, Rohit Kumar Gupta, Avik Ghose, Bhaumik Chirabarata, Diptesh Das
  • Publication number: 20140090001
    Abstract: The present invention provides a method and system for implementation of an interactive television application. Particularly, the invention provides method and system for designing and implementation of synchronized interactive television applications using quick response (QR) code, wherein the quick response (QR) code is used to tag the broadcasted television content. More particularly, the invention provides method and system for decoding the quick response (QR) code at the receiver side to provide a universal resource locator (URL) which hosts augmented services for the content on the interactive television as well as on the secondary communication device.
    Type: Application
    Filed: May 18, 2011
    Publication date: March 27, 2014
    Applicant: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Diptesh Das, Avik Ghose, Priyanka Sinha, Provat Biswas