Google Inc.

Ke Dong

Cedric Fung Lam

Tony Ong

Marvin Weinstein

Zixia Huang

Nicholas Ng

Wenlei Dai

Yut Loy Chan

Xiangjun Zhao

Changhong Joy Jiang

Milo Steven Medin

Dov Shimon Zimring

Shuang Yin

Steven Fong

Yifan Gao

Huy M Nguyen

Jiang Zhu

Xuemei Ouyang

Seang Yong Chau

Jeffrey Kuramoto

Wenjing Su

Sherry Qianhong Moore

Shawn M Ledbetter

Michael Daniel Fuller

Brian Tran

Sean Howarth

Xinfa Wu

Chi Fai Yip

A system and method is provided for improving signal quality in communications among fully wireless systems including a host device in wireless communication with a primary accessory which further wirelessly communicates with a secondary accessory. The host device generates information for use by the primary accessory in determining which channels have interference and should be avoided. The information may include an adaptive frequency hopping (AFH) channel map for communications between the host and the primary device, from which the primary device can infer which frequency bands have interference and generate a second AFH map for communications between the primary accessory and the secondary accessory accordingly. In other examples the information includes the second AFH map generated by the host, for example, based on an out-of-band scan. In further examples, the information includes an indication of channels used by recognized nearby access points.

External information assistant channel assessment for bluetooth adaptive frequency hopping

A method of establishing communication between an optical line terminal and an optical network unit within an optical access network includes receiving a signal indication from an optical transceiver of an optical line terminal. The signal indication includes: (i) a loss-of-signal indication indicating non-receipt of an upstream optical signal from the optical network unit; or (ii) a signal-received indication indicating receipt of the upstream optical signal from the optical network unit. The method includes determining whether the signal indication includes the loss-of-signal indication. When the signal indication includes the loss-of-signal indication, the method includes instructing the optical transceiver to cease signal transmission from the optical transceiver to the optical network unit. Moreover, when the signal indication includes the signal-received indication, the method includes instructing the optical transceiver to transmit a downstream optical signal from the optical transceiver to the optical network unit.

Optical network unit wavelength tuning

A method includes receiving user data packets from customer premises equipment (CPE) in communication with a network terminal over a communication link and enabling a network terminal-side loopback mode to establish a closed traffic test loop across the communication link between the network terminal and the CPE. The received user data packets indicate that a CPE-side loopback mode is enabled. The method also includes injecting a number of data bits into the closed traffic test loop until a saturation threshold of the communication link is satisfied, and when the number of data bits injected into the closed traffic test loop satisfies the saturation threshold, determining a packet error-rate of the number of data bits circulating in the closed traffic test loop. After determining the packet error-rate, the method also includes removing the closed traffic test loop across the communication link between the network terminal and the CPE.

Line rate ethernet traffic testing

A method for selecting a global positioning receiver includes receiving global positioning system signals from global positioning system receivers. The global positioning system receivers receive the global positioning system signals from corresponding global positioning system satellites. The method also includes replicating the global positioning system signals from the global positioning system receivers, determining a signal drift and a phase precision for each global positioning system signal, and selecting one of the global positioning system signals based on the corresponding signal drift and the phase precision of the global positioning system signal.

Scalable multi-source GPS signal distribution network

A method for selecting a global positioning receiver includes receiving global positioning system signals from global positioning system receivers. The global positioning system receivers receive the global positioning system signals from corresponding global positioning system satellites. The method also includes determining a signal quality score of each received signal based on a signal drift and a phase precision of the corresponding signal, and selecting one of the received global positioning system signals having the highest signal quality score.

A cascaded distribution framework includes a global positioning system receiver in communication with optical line terminals. Each global positioning system receiver receives a signal from a corresponding global positioning system satellite. Each optical line terminal includes a management card for each global positioning system receiver in communication with the optical line terminal and a line card. The management card receives a global positioning system signal from a corresponding global positioning system receiver. The line card is collocated for each management card in the optical line terminal. Each line card receives a global positioning system signal from each management card in the optical line terminal, determines a signal quality score of each received signal based on a signal drift and a phase precision of the corresponding signal, and selects one of the received global positioning system signals having the highest signal quality score.

A signal distribution system includes global positioning system receivers in communication with optical line terminals and a system manager. Each global positioning system receiver receives a signal from a corresponding global positioning system satellite. Each optical line terminal includes a management card and a line card. The management card receives a signal from a corresponding global positioning system receiver. Each line card receives a signal from each management card and determines a signal drift and a phase precision for each signal. The system manager receives a failure communication for a global positioning system signal from a line card when the signal drift of the global positioning system signal is above a threshold signal drift or the phase precision of the signal is below a threshold phase precision. The system manager identifies a failure location of the signal within the system based on one or more received failure communications.

A remote control for a set-top box is configured to communicate with the set-top box using first and second wavelengths. In one embodiment, the remote control automatically performs Bluetooth pairing with the set-top box when the remote control is in proximity to the set-top box and the user presses a button on the remote, such as a 'Power' button or other designated button. The remote control may wirelessly transmit a unique ID to the set-top box for the pairing process using the first wavelength, such as infrared. When paired, the set-top box may accept commands from the remote control transmitted using the second wavelengths, e.g., Bluetooth.

Automatically pairing remote

A local area network system that includes a residential gateway in wired communication with a remote service provider and multiple set top boxes in wired communication with the residential gateway. Each set top box includes a network extender having a wired connection to a residential gateway of a local area network, a media player in communication with the network extender, and at least one wireless transceiver in communication with the network extender. The media player includes a computing processor executing instructions to format a signal received from the network extender for use by a media device. Each set top box is configured as an access point for a local area network of the residential gateway.

Extending a local area network

A method of booting an electronic device includes verifying communicable connection of a sender input/output terminal of the electronic device to a receiver input/output terminal of the electronic device, using a first boot loader executing on a computing processor of the electronic device. The method further includes reading a signature of a unique identifier of the electronic device from a removable storage device received by the electronic device, verifying the signature of the unique identifier of the electronic device, and allowing installation of a second boot loader on the electronic device when the signature is valid.

Securely replacing boot loaders

A set top box including a network extender and a media player in communication with the network extender. The network extender is connectable to a residential gateway of a local area network through a wired connection. The media player includes a computing processor executing instructions to format a signal received from the network extender for use by a media device. The set top box also includes at least one wireless transceiver in communication with the network extender.

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San Jose, CA, United States of America

Ke Dong