Patents by Inventor Varadarajan Gopalakrishnan
Varadarajan Gopalakrishnan 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).
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Patent number: 10257556Abstract: Disclosed are various embodiments for determining whether a client device is authorized to receive media content based at least in part on the call signs of broadcast stations that the client device is able to receive. A computing device receives a broadcast station identifier and a program identifier from a client computing device. The computing device determines that the client computing device is authorized to access media content identified by the program identifier based at least in part on the broadcast station identifier. Finally, the computing device streams the media content to the client computing device in response to determining that the client computing device is authorized to access the media content.Type: GrantFiled: October 12, 2017Date of Patent: April 9, 2019Assignee: Amazon Technologies, Inc.Inventors: Jeromey Russell Goetz, Christopher Shingee Park, Varadarajan Gopalakrishnan
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Patent number: 10257077Abstract: A mesh network device includes a radio and an application processor including a hop-aware multicast engine to: determine a mesh header time to live (TTL) value for a broadcast frame in a data link layer. The mesh header TTL value is the lessor of an internet protocol (IP) header TTL value of the first broadcast frame in an IP layer and a predefined value. The broadcast frame includes a request for a service or a resource to be sent. The hop-aware multicast engine sends the broadcast frame to a first set of mesh network devices being defined by the mesh header TTL value. The hop-aware multi-case engine determines that a response was not received within a time period; increases the mesh header TTL value; and sends a broadcast frame to a second set of one or more additional mesh network devices being defined by the increased mesh header TTL value.Type: GrantFiled: March 22, 2017Date of Patent: April 9, 2019Assignee: Amazon Technologies, Inc.Inventors: Yi Zhu, Varadarajan Gopalakrishnan, Kiran Kumar Edara, Sheung Mei Chan
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Patent number: 10230636Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes a first radio and a second radio coupled to a processing device. The processing device receives a request from a client consumption device via the first radio and determines a destination for the request as a second mesh network device. The processing device access a master routing table to determine that the second radio is to forward the request and forwards the request to the second radio. The second radio accesses a local routing table at the second radio to determine that a radio of a third mesh network device is a next-hop mesh network device in a first path to the second mesh network device. The second radio sends the request to the radio of the third mesh network device.Type: GrantFiled: June 21, 2016Date of Patent: March 12, 2019Assignee: Amazon Technologies, Inc.Inventors: Sheung Mei Chan, Andrew David Price, Varadarajan Gopalakrishnan, Yi Zhu, Lori Yoshida
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Patent number: 10219142Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device receives, via a first radio, a beacon frame from a second mesh network device, scans, via a second radio, for a second mesh frame of the second mesh network device, and receives the mesh frame. The processing device determines a first sector identifier that identifies an antenna from which the mesh frame is transmitted, a first signal strength indicator value corresponding to the mesh frame, an unused radio and an unused channel of the second mesh network device. The processing device sends a first message to the unused radio of the second mesh network device on the unused channel via the second radio, receives a second message, and configures the multiple radios to communicate with the second mesh network device.Type: GrantFiled: May 15, 2017Date of Patent: February 26, 2019Assignee: Amazon Technologies, Inc.Inventors: Lori Yoshida, Varadarajan Gopalakrishnan, Sheung Mei Chan, Avinash Joshi, Andrew David Price, Jungtao Liu
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Publication number: 20180331914Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device receives, via a first radio, a beacon frame from a second mesh network device, scans, via a second radio, for a second mesh frame of the second mesh network device, and receives the mesh frame. The processing device determines a first sector identifier that identifies an antenna from which the mesh frame is transmitted, a first signal strength indicator value corresponding to the mesh frame, an unused radio and an unused channel of the second mesh network device. The processing device sends a first message to the unused radio of the second mesh network device on the unused channel via the second radio, receives a second message, and configures the multiple radios to communicate with the second mesh network device.Type: ApplicationFiled: May 15, 2017Publication date: November 15, 2018Inventors: Lori Yoshida, Varadarajan Gopalakrishnan, Sheung Mei Chan, Avinash Joshi, Andrew David Price, Jungtao Liu
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Patent number: 10115390Abstract: A server determines that communications with a first user device are to be made in a voice call mode. The server receives, from a second user device, a first text data packet corresponding to text communications with the first user device, converts the first text data packet into a first voice data packet, and sends, via a wireless network, the first voice data packet to the first user device.Type: GrantFiled: June 1, 2016Date of Patent: October 30, 2018Assignee: Amazon Technologies, Inc.Inventors: Varadarajan Gopalakrishnan, Kiran K. Edara
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Patent number: 10075198Abstract: Radio frequency (RF) front-end circuitry and methods of operating the same are described. One apparatus includes multiple antennas and a RF front-end circuitry. The RF front-end circuitry includes a first diplexer, a second diplexer, a third diplexer, a fourth diplexer, and a switch. A first transceiver is coupled to a first antenna via the first diplexer and the second diplexer. The third receiver is coupled to the first antenna via the first diplexer. The second transceiver is selectively coupled to a second antenna via the third diplexer, the switch, and the fourth diplexer when the switch is set to the first mode in response to the control signal from a processing component. The first transceiver is selectively coupled to the second antenna via the switch and the third diplexer when the switch is set to the first mode in response to the control signal from the processing component.Type: GrantFiled: March 30, 2016Date of Patent: September 11, 2018Assignee: Amazon Technologies, Inc.Inventors: Tzung-I Lee, Varadarajan Gopalakrishnan, Cheol Su Kim, In Chul Hyun
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Publication number: 20180198779Abstract: Two unmanned vehicles come within communication range of one another. The unmanned vehicles exchange logs of messages each has received. Each of the unmanned vehicles analyzes the messages that it received from the other unmanned vehicle to determine whether any of the received messages warrants changing a set of tasks it was planning to perform. When a message indicates that a task should be changed, the task is updated accordingly.Type: ApplicationFiled: March 5, 2018Publication date: July 12, 2018Inventors: Darren Ernest Canavor, Varadarajan Gopalakrishnan, Jesper Mikael Johansson, Jon Arron McClintock, Brandon William Porter, Andrew Jay Roths
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Patent number: 9991914Abstract: Technology for a bi-directional radio frequency front-end (RFFE) architecture with high selectivity performance is described. One RFFE has a first mixer that receives a LO signal from the LO circuit and a transmit (TX) signal, having a first frequency, from a transmitter and produces a down-converted TX signal for channel bandwidth filtering, the TX signal having a second frequency that is lower than the first frequency. A programmable filter circuit, in response to a selection signal, filters the down-converted TX signal according to a selected channel bandwidth. The second mixer receives the LO signal from the LO circuit and a channel-filtered TX signal from the programmable filter circuit and produces an up-converted TX signal having the first frequency. The power amplifier amplifies the up-converted TX signal to produce an output TX signal to cause an antenna to radiate electromagnetic energy in the selected channel bandwidth.Type: GrantFiled: May 15, 2017Date of Patent: June 5, 2018Assignee: Amazon Technologies, Inc.Inventors: Tzung-I Lee, Omar Fawazhashim Zakaria, Cheol Su Kim, Varadarajan Gopalakrishnan, In Chul Hyun
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Patent number: 9930027Abstract: An unmanned vehicle communicates with other unmanned vehicles. When the unmanned vehicle receives a message from another unmanned vehicle, the unmanned vehicle verifies authenticity of the message. For at least some types of messages, if determined that the message is authentic, the unmanned vehicle updates a set of operations the unmanned vehicle will perform in accordance with information in the message.Type: GrantFiled: March 27, 2015Date of Patent: March 27, 2018Assignee: Amazon Technologies, Inc.Inventors: Darren Ernest Canavor, Varadarajan Gopalakrishnan, Jesper Mikael Johansson, Jon Arron McClintock, Brandon William Porter, Andrew Jay Roths
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Patent number: 9912655Abstract: Two unmanned vehicles come within communication range of one another. The unmanned vehicles exchange logs of messages each has received. Each of the unmanned vehicles analyzes the messages that it received from the other unmanned vehicle to determine whether any of the received messages warrants changing a set of tasks it was planning to perform. When a message indicates that a task should be changed, the task is updated accordingly.Type: GrantFiled: March 27, 2015Date of Patent: March 6, 2018Assignee: Amazon Technologies, Inc.Inventors: Darren Ernest Canavor, Varadarajan Gopalakrishnan, Jesper Mikael Johansson, Jon Arron McClintock, Brandon William Porter, Andrew Jay Roths
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Patent number: 9900880Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes three radios, two of which operate with a frequency separation less than 100 MHz. A first network hardware device communicates with a second network hardware device when not serving data to a client device. When serving data to a client device, the first network hardware device communicates wireless wide area network (WWAN) data to a WWAN network through a third network hardware device in the WMN that has its own WWAN connection to create spatial separation for simultaneous communication.Type: GrantFiled: May 13, 2016Date of Patent: February 20, 2018Assignee: Amazon Technologies, Inc.Inventors: Omar Fawazhashim Zakaria, Cheol Su Kim, In Chul Hyun, Varadarajan Gopalakrishnan
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Patent number: 9887708Abstract: Network hardware devices organized in a Wireless mesh network (WMN) in which the network hardware devices cooperate in distribution of content files to client consumption devices in an environment of limited connectivity to broadband Internet infrastructure are described. One mesh network device includes a micro controller, RF radios, and antenna switching circuitry. The antenna switching circuitry, in response to the control signals from a micro controller, selectively couples individual ones of a first set of antennas to individual channels of the set of RF radios to communicate content data with client consumption devices and selectively couples individual ones of a second set of antennas to other individual channels of the set of RF radios to communicate content data with other mesh network devices in a WMN.Type: GrantFiled: May 13, 2016Date of Patent: February 6, 2018Assignee: Amazon Technologies, Inc.Inventors: In Chul Hyun, Andrew David Price, Tzung-I Lee, Kwok Lee, Cheol Su Kim, Omar Fawazhashim Zakaria, Varadarajan Gopalakrishnan
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Publication number: 20180035146Abstract: Disclosed are various embodiments for determining whether a client device is authorized to receive media content based at least in part on the call signs of broadcast stations that the client device is able to receive. A computing device receives a broadcast station identifier and a program identifier from a client computing device. The computing device determines that the client computing device is authorized to access media content identified by the program identifier based at least in part on the broadcast station identifier. Finally, the computing device streams the media content to the client computing device in response to determining that the client computing device is authorized to access the media content.Type: ApplicationFiled: October 12, 2017Publication date: February 1, 2018Inventors: Jeromey Russell Goetz, Christopher Shingee Park, Varadarajan Gopalakrishnan
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Patent number: 9848024Abstract: Described are techniques for establishing communication between media devices and enabling portions of content to be provided using one or more of the media devices. Data indicative of the transport functionality for the media devices and services available on the media devices may be used to determine one or more media devices suitable for the presentation of content. Control information may be provided to the media device(s) to control presentation of the portions of the content.Type: GrantFiled: October 2, 2015Date of Patent: December 19, 2017Assignee: Amazon Technologies, Inc.Inventors: Edward James Gayles, Varadarajan Gopalakrishnan, Shih-Chun Chang
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Patent number: 9832502Abstract: Disclosed are various embodiments for determining whether a client device is authorized to receive media content based at least in part on the call signs of broadcast stations that the client device is able to receive. A computing device receives a broadcast station identifier and a program identifier from a client computing device. The computing device determines that the client computing device is authorized to access media content identified by the program identifier based at least in part on the broadcast station identifier. Finally, the computing device streams the media content to the client computing device in response to determining that the client computing device is authorized to access the media content.Type: GrantFiled: June 12, 2015Date of Patent: November 28, 2017Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Jeromey Russell Goetz, Christopher Shingee Park, Varadarajan Gopalakrishnan
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Patent number: 9813965Abstract: Approaches are described which enable a user equipment (UE) device (e.g., mobile phone, tablet computer) to measure signal strength of neighboring cells in a cellular network based at least in part on direction and/or location information of the UE device. The computing device may determine, based on location and/or direction information, that the device is moving away from a neighboring cell and either stop measuring the signal strength or reduce the rate of measuring the signal strength of that neighboring cell. This selective measuring can enable computing devices to conserve battery power and reduce processing overhead when moving between cells of a cellular network.Type: GrantFiled: December 18, 2012Date of Patent: November 7, 2017Assignee: Amazon Technologies, Inc.Inventors: Kiran Kumar Edara, Varadarajan Gopalakrishnan
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Patent number: 9778653Abstract: Devices such as vehicles, remote sensors, and so forth consume energy during operation. Described herein are systems, devices, and methods for transferring energy from an uncrewed autonomous vehicle to a vehicle such as a car. The uncrewed autonomous vehicle may locate the vehicle at a rendezvous location, and connect with the vehicle while the vehicle moves. Once the uncrewed autonomous vehicle connects to the vehicle, the uncrewed autonomous vehicle may transfer the energy to the vehicle.Type: GrantFiled: June 27, 2014Date of Patent: October 3, 2017Assignee: Amazon Technologies, Inc.Inventors: Jon Arron McClintock, Daniel Buchmueller, Varadarajan Gopalakrishnan, Fabian Hensel, Jesper Mikael Johansson, Brandon William Porter, Andrew Jay Roths
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Publication number: 20170223090Abstract: Wireless mesh network (WMN) architectures of network hardware devices organized in a mesh topology in which the network hardware devices cooperate in distribution of content files to client consumption devices in an environment of limited connectivity to broadband Internet infrastructure is described. A self-contained, fully connected WMN can be used for localized delivery of content files. One WMN includes a single ingress node for ingress of content files into the wireless mesh network. The WMN also includes multiple network hardware devices wirelessly connected through a network backbone formed by multiple P2P wireless connections. A first network hardware device is wirelessly connected to a client consumption device by a first node-to-client (N2C) wireless connection and a second network hardware device is wirelessly connected to the single ingress node.Type: ApplicationFiled: May 13, 2016Publication date: August 3, 2017Inventors: Varadarajan Gopalakrishnan, Andrew David Price, In Chul Hyun, Jin Dong Kim, Subram Narasimhan
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Publication number: 20170222666Abstract: Network hardware devices organized in a Wireless mesh network (WMN) in which the network hardware devices cooperate in distribution of content files to client consumption devices in an environment of limited connectivity to broadband Internet infrastructure are described. One mesh network device includes a micro controller, RF radios, and antenna switching circuitry. The antenna switching circuitry, in response to the control signals from a micro controller, selectively couples individual ones of a first set of antennas to individual channels of the set of RF radios to communicate content data with client consumption devices and selectively couples individual ones of a second set of antennas to other individual channels of the set of RF radios to communicate content data with other mesh network devices in a WMN.Type: ApplicationFiled: May 13, 2016Publication date: August 3, 2017Inventors: In Chul Hyun, Andrew David Price, Tzung-I Lee, Kwok Lee, Cheol Su Kim, Omar Fawazhashim Zakaria, Varadarajan Gopalakrishnan