Apple Inc.

Linkedin Corporation

Microsoft Technology Licensing, LLC

Shaobo Liu

Dennis M Fischette, Jr

Yan Liu

Guan Wang

Meei-Ling Chiang

Samed Maltabas

Ximeng Zhang

Christian Sutherland-Wong

Yuchen Zhao

Mike Derezin

Yu Cheng Chen

Boon-Aik Ang

Patrick J Landy

Yu Chen

Robert K Kong

Dabin Zhang

Hairong Yu

Gregory N Santos

Richard Y Su

Pyoungwon Park

Litesh Sajnani

A clock generator circuit may include a multiplex circuit and a phase-locked loop circuit. The multiplex circuit may generate a reference clock signal for the phase-locked loop circuit by selecting one of different clock signals. In response to a switch of the reference clock signal from one clock signal to another, the phase-locked loop circuit may disable phase-locking and enter into a frequency acquisition mode during which the frequency of the phase-locked loop circuit's output clock signal is adjusted based on the frequency of the newly selected reference clock signal. After a period of time has elapsed, the phase-locked loop circuit returns to phase-locking operation.

Reference clock switching in phase-locked loop circuits

Systems, apparatuses, and methods for implementing a hybrid asynchronous gray counter with a non-gray zone detector are described. A circuit includes an asynchronous gray counter coupled to control logic. The control logic programs the asynchronous gray counter to operate in different modes to perform various functions associated with a high-performance phase-locked loop (PLL). In a first mode, the asynchronous gray counter serves as a frequency detector to count oscillator cycles within a reference clock cycle. In a second mode, the asynchronous gray counter serves as a coarse phase detector to detect a phase error between a feedback clock and a reference clock. In a third mode, the asynchronous gray counter serves as a multi-modulus divider to divide an oscillator clock down to create a feedback clock. Using a single asynchronous gray counter for three separate functions reduces power consumption and area utilization.

Hybrid asynchronous gray counter with non-gray zone detector for high performance phase-locked loops

An apparatus includes an oscillator circuit that may generate a clock signal with a frequency that is based on a voltage level of a control node, and a charge pump circuit that includes a first current source and a second current source. The first current source may be coupled between a first supply node and a first circuit node. The second current source may be coupled between a second supply node and a second circuit node. The charge pump circuit may be configured to pre-charge the first and second circuit nodes to voltage levels that differ from the control node and the first and second supply nodes. In addition, the charge pump circuit may select, based on phase information, either the first or second circuit node, and then modify, based on a voltage level of the selected circuit node, a voltage level of the control node.

Energy-efficient charge pump design for phase-locked loops

A method, system and article of manufacture for determining a global hierarchy of an entity by computing subjective coherence strength between nodes of first members of a social network service, computing objective entanglement strength between nodes of second members of the social network service, using subjective coherence strength and objective entanglement strength, compute the pairwise latent relationship probabilities between different ones of the nodes of the social network service, and using the pairwise relationship probabilities, compute the global hierarchy relationship.

Techniques for inferring an organizational hierarchy from a social graph

A method and system to determine a category score of a social network member is described. An example system comprises a sample selector, a weight value module, a storing module, an access module, and a category score module. The sample selector selects a sample of member profiles from the profiles maintained by an on-line social network system. The weight value module obtains respective weight values associated with various phrases present in the sample of member profiles. The access module accesses a member profile and the weighted phrases associated with a certain category. The category score module determines a category score for the member profile based on a presence of one or more phrases from the plurality of weighted phrases in the member profile.

Method and system to determine a category score of a social network member

A method and system to determine a category score of a social network member is described. An example system comprises a sample selector, a weight value module, a storing module, an access module, and a category score module. The sample selector selects a random sample of member profiles from the profiles maintained by an on-line social network system. The weight value module obtains respective weight values associated with various phrases present in the random sample of member profiles. The access module accesses a member profile and the weighted phrases associated with a certain category. The category score module determines a category score for the member profile based on a presence of one or more phrases from the plurality of weighted phrases in the member profile.

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Sunnyvale, CA, United States of America

Shaobo Liu