Patents by Inventor Vaidyanathan Ramaswami

Vaidyanathan Ramaswami 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: 20240378975
    Abstract: A system and method for rendering an alarm signal when a door of an appliance is in a hazard condition. The system includes at least one electromagnetic (EME) transducer configured to render an alarm signal when the door of the appliance is in the hazard condition, wherein the at least one electromagnetic (EME) transducer includes at least one of a motion sensor unit, a light emitter unit, a gas ejector unit, and a sound generator, and wherein the appliance is a household appliance. The system can include a controller communicatively coupled to the at least one EME transducer and configured to receive a motion detection signal from the motion sensor unit, and send a light emission signal, a gas ejection signal, or a sound signal to the at least one EME transducer.
    Type: Application
    Filed: April 23, 2024
    Publication date: November 14, 2024
    Inventor: Vaidyanathan Ramaswami
  • Patent number: 10237623
    Abstract: A method includes evaluating a bandwidth capacity of an uplink between a first customer premises equipment device and a network node of a multimedia distribution network. The method includes transmitting a portion of multimedia content from the first customer premises equipment device to a second customer premises equipment device. The method includes, responsive to determining that the bandwidth capacity of the uplink is greater than a threshold, determining a number of subsequent requestors that the first customer premises equipment device is capable of servicing, selecting a first set of helper virtual peers from a pool of available helper virtual peers based on the number of subsequent requestors, and transmitting the multimedia content from the first customer premises equipment device to the first set of helper virtual peers.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 19, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Publication number: 20170318354
    Abstract: A method includes evaluating a bandwidth capacity of an uplink between a first customer premises equipment device and a network node of a multimedia distribution network. The method includes transmitting a portion of multimedia content from the first customer premises equipment device to a second customer premises equipment device. The method includes, responsive to determining that the bandwidth capacity of the uplink is greater than a threshold, determining a number of subsequent requestors that the first customer premises equipment device is capable of servicing, selecting a first set of helper virtual peers from a pool of available helper virtual peers based on the number of subsequent requestors, and transmitting the multimedia content from the first customer premises equipment device to the first set of helper virtual peers.
    Type: Application
    Filed: July 19, 2017
    Publication date: November 2, 2017
    Inventors: VAIDYANATHAN RAMASWAMI, RITTWIK JANA
  • Patent number: 9749702
    Abstract: A method includes evaluating a bandwidth capacity of an uplink between a first customer premises equipment device and a network node of a multimedia distribution network. The method includes receiving a message at the first customer premises equipment device from the network node, the message indicating a request for multimedia content by a second customer premises equipment device, and instructing the first customer premise equipment device to provide the multimedia content to the second customer premise equipment device. The method includes transmitting a portion of the multimedia content from the first customer premises equipment device to the second customer premises equipment device. The method further includes, when the bandwidth capacity of the uplink is greater than a threshold, transmitting the multimedia content from the first customer premises equipment device to a first set of helper virtual peers selected based on the bandwidth capacity.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: August 29, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Publication number: 20160269800
    Abstract: A method includes evaluating a bandwidth capacity of an uplink between a first customer premises equipment device and a network node of a multimedia distribution network. The method includes receiving a message at the first customer premises equipment device from the network node, the message indicating a request for multimedia content by a second customer premises equipment device, and instructing the first customer premise equipment device to provide the multimedia content to the second customer premise equipment device. The method includes transmitting a portion of the multimedia content from the first customer premises equipment device to the second customer premises equipment device. The method further includes, when the bandwidth capacity of the uplink is greater than a threshold, transmitting the multimedia content from the first customer premises equipment device to a first set of helper virtual peers selected based on the bandwidth capacity.
    Type: Application
    Filed: May 26, 2016
    Publication date: September 15, 2016
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Patent number: 9379908
    Abstract: A method includes at a first customer premises equipment (CPE) device, generating a first request for multimedia content. The method also includes sending the first request to a network node of the multimedia distribution network. The method further includes receiving the multimedia content from a virtual peer located at the network node and storing the multimedia content at the first CPE device. The method also includes receiving a message via the multimedia distribution network, the message indicating a second request for the multimedia content by a second customer premises equipment (CPE) device. The method further includes transmitting at least a portion of the stored multimedia content to the second CPE device.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: June 28, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Patent number: 8660114
    Abstract: A method and apparatus for handling internet access telephone calls made via cable company telephone services. A head end data terminal receives cable signals and converts them into individual signals. An intelligent switch detects signals destined for an internet service provider and routes those signals on a separate path to the internet service provider. A central switch routes the other signals along a telephone network. A computer program can control the steps of receiving cable signals, converting them into voice band signals, routing the signals that are not for the intended recipient to a central switch, multiplexing the signals for the intended recipient together, and sending the multiplexed signals to the intended recipient.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: February 25, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Vaidyanathan Ramaswami, Duncan K. Sparrell, Simon D. Byers, Kenneth W. Church
  • Patent number: 8589993
    Abstract: A disclosed method of distributing multimedia content to end users in a multimedia content distribution network includes segmenting time in a series of intervals referred to herein as limited-chain relay (LCR) intervals. The LCR intervals may have a duration of time T although an LCR interval may be terminated before the duration expires. During any interval, the LCR distribution method includes responding to a first request for a program of multimedia content (PMC) from a first requestor by delivering the PMC from a video server to the customer premises equipment (CPE) of the requestor and storing the PMC on the CPE of the first requestor. The method further includes responding to subsequent requests for the PMC that occur before the time T and before the interval terminates otherwise from subsequent requestors by delivering at least some portion of the PMC to the subsequent requestors from the CPE of at least one previous requestor.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: November 19, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Patent number: 8321900
    Abstract: A method includes at a first customer premises equipment (CPE) device coupled to a multimedia distribution network, generating a first request for multimedia content. The method also includes sending the first request to a network node of the multimedia distribution network. The method further includes receiving the multimedia content from a virtual peer located at the network node and storing the multimedia content at the first CPE device. The method also includes receiving a message via the multimedia distribution network, the message indicating a transmission of a second request for the multimedia content by a second customer premises equipment (CPE) device. The method further includes transmitting at least a portion of the stored multimedia content to the second CPE device.
    Type: Grant
    Filed: December 12, 2009
    Date of Patent: November 27, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Publication number: 20120076138
    Abstract: A method and apparatus for handling internet access telephone calls made via cable company telephone services. A head end data terminal receives cable signals and converts them into individual signals. An intelligent switch detects signals destined for an internet service provider and routes those signals on a separate path to the internet service provider. A central switch routes the other signals along a telephone network. A computer program can control the steps of receiving cable signals, converting them into voice band signals, routing the signals that are not for the intended recipient to a central switch, multiplexing the signals for the intended recipient together, and sending the multiplexed signals to the intended recipient.
    Type: Application
    Filed: December 7, 2011
    Publication date: March 29, 2012
    Inventors: Vaidyanathan Ramaswami, Duncan K. Sparrell, Simon D. Byers, Kenneth W. Church
  • Patent number: 8094650
    Abstract: A method and apparatus for handling internet access telephone calls made via cable company telephone services. A head end data terminal receives cable signals and converts them into individual signals. An intelligent switch detects signals destined for an internet service provider and routes those signals on a separate path to the internet service provider. A central switch routes the other signals along a telephone network. A computer program can control the steps of receiving cable signals, converting them into voice band signals, routing the signals that are not for the intended recipient to a central switch, multiplexing the signals for the intended recipient together, and sending the multiplexed signals to the intended recipient.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: January 10, 2012
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Vaidyanathan Ramaswami, Duncan K. Sparrell, Simon D. Byers, Kenneth W. Church
  • Publication number: 20110145870
    Abstract: A method includes at a first customer premises equipment (CPE) device coupled to a multimedia distribution network, generating a first request for multimedia content. The method also includes sending the first request to a network node of the multimedia distribution network. The method further includes receiving the multimedia content from a virtual peer located at the network node and storing the multimedia content at the first CPE device. The method also includes receiving a message via the multimedia distribution network, the message indicating a transmission of a second request for the multimedia content by a second customer premises equipment (CPE) device. The method further includes transmitting at least a portion of the stored multimedia content to the second CPE device.
    Type: Application
    Filed: December 12, 2009
    Publication date: June 16, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Publication number: 20100058403
    Abstract: A disclosed method of distributing multimedia content to end users in a multimedia content distribution network includes segmenting time in a series of intervals referred to herein as limited-chain relay (LCR) intervals. The LCR intervals may have a duration of time T although an LCR interval may be terminated before the duration expires. During any interval, the LCR distribution method includes responding to a first request for a program of multimedia content (PMC) from a first requestor by delivering the PMC from a video server to the customer premises equipment (CPE) of the requestor and storing the PMC on the CPE of the first requestor. The method further includes responding to subsequent requests for the PMC that occur before the time T and before the interval terminates otherwise from subsequent requestors by delivering at least some portion of the PMC to the subsequent requestors from the CPE of at least one previous requestor.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 4, 2010
    Inventors: Vaidyanathan Ramaswami, Rittwik Jana
  • Publication number: 20090261943
    Abstract: A method and apparatus for enabling the use of an IP based network that supports triple play services, comprising voice service, data service and video service, to provide premise monitoring are disclosed. For example, the method monitors a premise via at least one sensing device, and sends security related information to a headend office in a communication network when a security event is detected, wherein the communication network is a triple play service network supporting a voice service, a video service, and a data service.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 22, 2009
    Inventors: RITTWIK JANA, Vaidyanathan Ramaswami
  • Publication number: 20080205383
    Abstract: A method and apparatus for handling internet access telephone calls made via cable company telephone services. A head end data terminal receives cable signals and converts them into individual signals. An intelligent switch detects signals destined for an internet service provider and routes those signals on a separate path to the internet service provider. A central switch routes the other signals along a telephone network. A computer program can control the steps of receiving cable signals, converting them into voice band signals, routing the signals that are not for the intended recipient to a central switch, multiplexing the signals for the intended recipient together, and sending the multiplexed signals to the intended recipient.
    Type: Application
    Filed: April 21, 2008
    Publication date: August 28, 2008
    Inventors: Vaidyanathan Ramaswami, Duncan K. Sparrell, Simon D. Byers, Kenneth W. Church
  • Patent number: 7369542
    Abstract: A method and apparatus for handling internet access telephone calls made via cable company telephone services. A head end data terminal receives cable signals and converts them into individual signals. An intelligent switch detects signals destined for an internet service provider and routes those signals on a separate path to the internet service provider. A central switch routes the other signals along a telephone network. A computer program can control the steps of receiving cable signals, converting them into voice band signals, routing the signals that are not for the intended recipient to a central switch, multiplexing the signals for the intended recipient together, and sending the multiplexed signals to the intended recipient.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: May 6, 2008
    Assignee: AT&T Corp.
    Inventors: Vaidyanathan Ramaswami, Duncan K. Sparrell, Simon D. Byers, Kenneth W. Church
  • Patent number: 7286654
    Abstract: Congestion problems in networks are alleviated with a method that works toward insuring that unused capacity will always exist in elements of a network that are resources which are shared by a plurality of users and which, consequently, can be overloaded. In response to each request to establish a connection over a path in the network, pursuant to a predetermined algorithm the method services the request, declines to service the request, or services the request after dropping an established connection. In one embodiment, when unused capacity on the path is above a first preselected level, all requests are serviced. When unused capacity falls below a second preselected threshold, no requests are serviced. When unused capacity is between the first and second thresholds, an existing data connection is dropped if a requested connection is a voice connection and the number of existing data connections exceeds a preselected threshold.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: October 23, 2007
    Assignee: AT&T Corp.
    Inventors: Soohan Ahn, Vaidyanathan Ramaswami
  • Patent number: 7099329
    Abstract: An arrangement where connections between a terminal and a switch are effected through a serial connection of shared, overloadable, resources, and where conventionally each of the resources has a given number of communication channels, provides for effective congestion control by converting one or more of the communications channels to one or more groups of enhanced signaling channels. The congestion control is effected by employing the enhanced signaling channels, which can carry audible signals, to determine whether to set up requested calls, based on a preselected congestion control process.
    Type: Grant
    Filed: December 22, 2001
    Date of Patent: August 29, 2006
    Assignee: AT&T Corp.
    Inventors: Gagan L. Choudhury, Vaidyanathan Ramaswami
  • Patent number: 7068766
    Abstract: Congestion problems in networks are alleviated with a method that works toward insuring that unused capacity will always exist in elements of a network that are resources which are shared by a plurality of users and which, consequently, can be overloaded. In response to each request to establish a connection over a path in the network, pursuant to a predetermined algorithm the method services the request, declines to service the request, or services the request after dropping an established connection. In one embodiment, when unused capacity on the path is above a first preselected level, all requests are serviced. When unused capacity falls below a second preselected threshold, no requests are serviced. When unused capacity is between the first and second thresholds, an existing data connection is dropped if a requested connection is a voice connection and the number of existing data connections exceeds a preselected threshold.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: June 27, 2006
    Assignee: AT&T Corp.
    Inventors: Soohan Ahn, Vaidyanathan Ramaswami
  • Patent number: 6987848
    Abstract: A method for alleviating congestion problems in prior art networks delays provision of dial tone signals to terminals that are, likely, carrying out a re-dial attempt in excess of a preselected number of re-dial attempts. A determination that the terminal seeking to establish a connection is likely carrying out a re-dial attempt may be based on numerous factors, such as the time since the last time the terminal desired to establish a call, the duration of the last call, etc. The delay that is imposed is, advantageously, sensitive to the number of times the terminal has attempted a re-dial, and on other conditions, such as the cause of the failure to establish a connection, network congestion conditions, etc. In imposing the dial tone delay, identities of the terminals that are to receive a delayed dial tone are placed in a FIFO queue.
    Type: Grant
    Filed: December 22, 2001
    Date of Patent: January 17, 2006
    Assignee: AT&T Corp.
    Inventors: Gagan L. Choudhury, Alan Edward Kaplan, David John Poole, Vaidyanathan Ramaswami, Ward Whitt