Patents by Inventor Hariharan Ganapathy Kathirvelu

Hariharan Ganapathy Kathirvelu 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: 10182207
    Abstract: The disclosure relates to handling nuisance in teleconference system. An endpoint device (400) for use in a teleconference includes an acquiring unit (401), a judging unit (402), a controller (403) and a processing unit (404). The acquiring unit acquires a media stream for presentation in the teleconference, and receives information from another device. The information includes a first estimation on whether the media stream is a nuisance to the teleconference. As the nuisance to a teleconference, audio or video signals are perceived by users as actually not relevant to the conference session or causing unpleasant feeling or confusion. The judging unit decides whether the media stream is the nuisance at least based on the information. The controller controls the processing of the media stream to degrade or suppress the presentation of the media stream in case that the media stream is decided as the nuisance. The processing unit processes the media stream under the control of the controller.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: January 15, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Taoran Lu, Hariharan Ganapathy-Kathirvelu, Peng Yin, Glenn N. Dickins, Xuejing Sun
  • Publication number: 20170353696
    Abstract: The disclosure relates to handling nuisance in teleconference system. An endpoint device (400) for use in a teleconference includes an acquiring unit (401), a judging unit (402), a controller (403) and a processing unit (404). The acquiring unit acquires a media stream for presentation in the teleconference, and receives information from another device. The information includes a first estimation on whether the media stream is a nuisance to the teleconference. As the nuisance to a teleconference, audio or video signals are perceived by users as actually not relevant to the conference session or causing unpleasant feeling or confusion. The judging unit decides whether the media stream is the nuisance at least based on the information. The controller controls the processing of the media stream to degrade or suppress the presentation of the media stream in case that the media stream is decided as the nuisance. The processing unit processes the media stream under the control of the controller.
    Type: Application
    Filed: February 16, 2016
    Publication date: December 7, 2017
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Taoran LU, Hariharan GANAPATHY-KATHIRVELU, Peng YIN, Glenn N. DICKINS, Xuejing SUN
  • Patent number: 9049445
    Abstract: Given an input progressive sequence, a video encoder creates a dual-layer stream that combines a backwards-compatible interlaced video stream layer with an enhancement layer to reconstruct full-resolution progressive video. Given two consecutive frames in the input progressive sequence, vertical processing generates a top field-bottom field (TFBF) frame in a base layer (BL) TFBF sequence, and horizontal processing generates a side-by-side (SBS) frame in an enhancement layer (EL) SBS video sequence. The BL TFBF and the EL SBS sequences are compressed together to create a coded, backwards compatible output stream.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: June 2, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Tao Chen, Hariharan Ganapathy-Kathirvelu, Samir N. Hulyalkar, Gopi Lakshminarayanan
  • Publication number: 20140376612
    Abstract: Given an input progressive sequence, a video encoder creates a dual-layer stream that combines a backwards-compatible interlaced video stream layer with an enhancement layer to reconstruct full-resolution progressive video. Given two consecutive frames in the input progressive sequence, vertical processing generates a top field-bottom field (TFBF) frame in a base layer (BL) TFBF sequence, and horizontal processing generates a side-by-side (SBS) frame in an enhancement layer (EL) SBS video sequence. The BL TFBF and the EL SBS sequences are compressed together to create a coded, backwards compatible output stream.
    Type: Application
    Filed: December 13, 2012
    Publication date: December 25, 2014
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Tao Chen, Hariharan Ganapathy-Kathirvelu, Samir Hulyalkar, Gopi Lakshminarayanan
  • Patent number: 7817808
    Abstract: A clear, high quality voice signal with a high signal-to-noise ratio is achieved by use of an adaptive noise reduction scheme with two microphones in close proximity. The method includes the use of two omini directional microphones in a highly directional mode, and then applying an adaptive noise cancellation algorithm to reduce the noise.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: October 19, 2010
    Inventors: Alon Konchitsky, Alberto D Berstein, Hariharan Ganapathy Kathirvelu, Sandeep Kulakcherla, William Martin Ribble
  • Publication number: 20100082339
    Abstract: By monitoring the wind noise in a location in which a cellular telephone is operating and by applying noise reduction and/or cancellation protocols at the appropriate time via analog and/or digital signal processing, it is possible to significantly reduce wind noise entering into a communication system.
    Type: Application
    Filed: September 27, 2009
    Publication date: April 1, 2010
    Inventors: Alon Konchitsky, Alberto D. Berstein, Sandeep Kulakcherla, William Martin Ribble, Kevin Fitzgerald, Don Seferovich, Hariharan Ganapathy Kathirvelu
  • Publication number: 20090248411
    Abstract: VoIP phones according to the present invention include a microphone, which may be internal or external, and allow the user to communicate unobtrusively, check voice mail and conduct other activities in an environment which can be noisy in general and extremely noisy sometimes. Speech recognition functionally may also be used to generate and send touch tone or DTMF tones such as in response to call trees or voice recognition functionality used by airlines, credit card companies, voice mail systems, and other applications. A system and method of audio processing which provides enhanced speech recognition is provided. Audio input is received at the microphone which is processed by adaptive noise cancellation to generate an enhanced audio signal. The operation of the speech recognition engine and the adaptive noise canceller may be advantageously controlled based on Voice Activity Detection (VAD).
    Type: Application
    Filed: March 27, 2009
    Publication date: October 1, 2009
    Inventors: Alon Konchitsky, Alberto D. Berstein, Hariharan Ganapathy Kathirvelu, Sandeep Kulakcherla, William Martin Ribble
  • Publication number: 20090022335
    Abstract: A clear, high quality voice signal with a high signal-to-noise ratio is achieved by use of an adaptive noise reduction scheme with two microphones in close proximity. The method includes the use of two omini directional microphones in a highly directional mode, and then applying an adaptive noise cancellation algorithm to reduce the noise.
    Type: Application
    Filed: July 18, 2008
    Publication date: January 22, 2009
    Inventors: Alon Konchitsky, Alberto D. Berstein, Hariharan Ganapathy Kathirvelu, Sandeep Kulakcherla, William Ribble
  • Publication number: 20080312916
    Abstract: The intelligibility of speech signals is improved in the many situations where a voice signal is communicated or stored. Means and methods are disclosed for developing a scheme with high voice signal intelligibility without sacrifice of voice quality. The disclosed method comprises certain steps, including, but not limited to: Learning the noise on near-end side and enhancing the far-end voice as a function of the noise level on the near-end side. The disclosed method and apparatus are especially useful to increase the intelligibility of the cell phone's loudspeaker output. The invention includes the processing of an input speech signal to generate an enhanced intelligent signal. In frequency domain, the FFT spectrum of the speech received from the far-end is modified in accordance with the LPC spectrum of the local background noise to generate an enhanced intelligent signal. In time domain, the speech is modified in accordance with the LPC coefficients of the noise to generate an enhanced intelligent signal.
    Type: Application
    Filed: June 15, 2008
    Publication date: December 18, 2008
    Inventors: Alon Konchitsky, Alberto D. Berstein, Hariharan Ganapathy Kathirvelu, Sandeep Kulakcherla, William Martin Ribble