Patents by Inventor Chaitanya Prasad NARISETTY

Chaitanya Prasad NARISETTY 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: 20220375338
    Abstract: A traffic monitoring apparatus includes: at least one memory storing instructions; and at least one processor. The processor is configured to execute the instructions to; acquire waterfall data from a distributed acoustic sensor (DAS), wherein the waterfall data includes a generation position of a vibration on a roadway adjacent to the DAS, a generation time of the vibration and an amplitude of the vibration; preprocess the waterfall data; estimate at least one enhancement of the processed waterfall data, wherein an enhancement corresponds to a traffic flow property; and estimate at least one traffic flow property of the roadway from the enhancements of the processed waterfall data.
    Type: Application
    Filed: January 27, 2020
    Publication date: November 24, 2022
    Applicant: NEC Corporation
    Inventors: Chaitanya Prasad NARISETTY, Tomoyuki HINO
  • Publication number: 20220262240
    Abstract: The present disclosure provides a traffic prediction apparatus, system, method and program capable of predicting the number of vehicles and the speed of vehicles in a predetermined time and in a predetermined range based on waterfall data of vehicles. The traffic prediction apparatus comprises acquisition means for acquiring waterfall data comprising a generation position of a vibration, a generation time of the vibration and an amplitude of the vibration generated by a vehicle traveling on a road, pre-processing means for transforming the acquired waterfall data, generation means for training a portion of the plurality of processed waterfall data and at least one corresponding ground truth traffic property used as plurality of labels to generate a trained model, wherein the ground truth may be obtained from a secondary acquisition means, and prediction means for predicting at least one traffic property for a processed waterfall data.
    Type: Application
    Filed: July 1, 2019
    Publication date: August 18, 2022
    Applicant: NEC Corporation
    Inventors: Chaitanya Prasad NARISETTY, Akihiro TANAKA, Tomoyuki HINO
  • Publication number: 20220170766
    Abstract: According to one example embodiment, an optical fiber sensor includes an optical fiber cable and a device body configured to cause an optical pulse signal to be incident on the optical fiber cable and identify, from intensity change of backscattered light of the incident optical pulse signal and an arrival time of the backscattered light, a prescribed environmental change having occurred in a vicinity of the optical fiber cable and an occurrence location of the environmental change, in which the device body performs correction of a sensing location on the optical fiber cable, based on environmental change information including the identified occurrence location and installation location information of the optical fiber cable.
    Type: Application
    Filed: April 16, 2019
    Publication date: June 2, 2022
    Applicant: NEC Corporation
    Inventors: Tomoyuki HINO, Akihiro TANAKA, Chaitanya Prasad NARISETTY
  • Publication number: 20220155138
    Abstract: Provided are a structure deterioration detection system and a structure deterioration detection method capable of detecting deterioration of a structure at low cost. In one example embodiment, a structure deterioration detection system includes an optical fiber cable that is placed along the longitudinal direction of a structure and continuously detects any vibration along the longitudinal direction of the structure, and a signal processing unit including a vibration measurement unit that measures the strength of a detected vibration, a per unit time integration unit that integrates the vibration strength for a specified period of time, an information storage unit that stores the integrated vibration strength, and a deterioration determination unit that makes a determination about whether deterioration of the structure has occurred by comparing the integrated vibration strengths at different times.
    Type: Application
    Filed: March 26, 2019
    Publication date: May 19, 2022
    Applicant: NEC Corporation
    Inventors: Akihiro TANAKA, Tomoyuki HINO, Chaitanya Prasad NARISETTY
  • Patent number: 11276302
    Abstract: A traffic monitoring apparatus includes a distributed acoustic sensor (DAS) for acquiring waterfall data, wherein the waterfall data includes a generation position of a vibration on a roadway adjacent to the DAS, a generation time of the vibration and an amplitude of the vibration. The traffic monitoring apparatus further includes a processor connected to the DAS. The processor is configured to receive the waterfall data from the DAS. The processor is further configured to preprocess the waterfall data. The processor is further configured to separate the preprocessed waterfall data into a plurality of patches, wherein a size of each patch of the plurality of patches is determined based on a parameter of the roadway. The processor is further configured to process each of the plurality of patches to estimate at least one traffic flow property of the roadway.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: March 15, 2022
    Assignee: NEC CORPORATION
    Inventors: Chaitanya Prasad Narisetty, Tomoyuki Hino, Akihiro Tanaka
  • Publication number: 20210358513
    Abstract: A purpose of the present disclosure is to provide a source separation method, a non-transitory computer readable medium, and a source separation apparatus. The source separation apparatus includes an input means for inputting mixture data obtained by mixing a plurality of data; and a matrix decomposition means for separating the input mixture data by estimating a mixing/unmixing matrix, a basis matrix for each source, an activations matrix for each source and a reliability vector for each source, and a means for unmixing of input mixture data using the estimated matrices from the matrix decomposition means to estimate the sources.
    Type: Application
    Filed: October 26, 2018
    Publication date: November 18, 2021
    Applicant: NEC Corporation
    Inventors: Chaitanya Prasad NARISETTY, Tatsuya KOMATSU, Reishi KONDO
  • Publication number: 20210241615
    Abstract: A traffic monitoring apparatus includes a distributed acoustic sensor (DAS) for acquiring waterfall data, wherein the waterfall data includes a generation position of a vibration on a roadway adjacent to the DAS, a generation time of the vibration and an amplitude of the vibration. The traffic monitoring apparatus further includes a processor connected to the DAS. The processor is configured to receive the waterfall data from the DAS. The processor is further configured to preprocess the waterfall data. The processor is further configured to separate the preprocessed waterfall data into a plurality of patches, wherein a size of each patch of the plurality of patches is determined based on a parameter of the roadway. The processor is further configured to process each of the plurality of patches to estimate at least one traffic flow property of the roadway.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 5, 2021
    Inventors: Chaitanya Prasad NARISETTY, Tomoyuki HINO, Akihiro TANAKA