Nan Jiang

US Patent:

20130215733, Aug 22, 2013

Filed:

Feb 22, 2012

Appl. No.:

13/402476

Inventors:

Nan Jiang - Stanford CA, US
William J. Dally - Stanford CA, US

International Classification:

H04L 12/24

US Classification:

370216, 370244

Abstract:

Aspects relate to methods, devices and manufacturing relating to routing networks including a method for routing data units. The data units are individually routable through a routing network. A reservation request data unit is received over the routing network and from a sender. At least one speculative data unit associated with the reservation request data unit from the sender is received. The at least one speculative data unit is dropped in response to the at least one speculative data unit being blocked within the routing network. The sender is provided, over the routing network, a negative acknowledgement data unit that indicates the dropping of the at least one speculative data unit. The sender is provided a grant data unit indicating a start time. After the start time, at least one non-speculative data unit corresponding to the reservation request from the sender is received.

US Patent:

59397128, Aug 17, 1999

Filed:

May 30, 1997

Appl. No.:

8/866033

Inventors:

Prasad V. Venugopal - Sunnyvale CA
Nan Jiang - Fremont CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G01D 534

US Classification:

25023113

Abstract:

The quasi-absolute encoder module determines absolute position within one mechanical rotation. The encoder module includes a three channel position encoder and detection circuitry that includes a read-only memory (ROM). There are three channels: A, B, and I. Channels A and B have four periods and channel B is offset from channel A by 90. degree. in phase. Channel I has a unique sequence. The address generated by sampling this unique sequence corresponds to an address in ROM. The address indicates the position of the rotating shaft on which the codewheel is attached.

US Patent:

59987847, Dec 7, 1999

Filed:

May 8, 1998

Appl. No.:

9/074990

Inventors:

Prasad V. Venugopal - Sunnyvale CA
Nan Jiang - Fremont CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G01D 534

US Classification:

25023113

Abstract:

The quasi-absolute encoder module determines absolute position within one mechanical rotation. The encoder module includes a three channel position encoder and detection circuitry that includes a read-only memory (ROM). There are three channels: A, B, and I. Channels A and B have four periods and channel B is offset from channel A by 90. degree. in phase. Channel I has a unique sequence. The address generated by sampling this unique sequence corresponds to an address in ROM. The address indicates the position of the rotating shaft on which the code wheel is attached.

US Patent:

20210036877, Feb 4, 2021

Filed:

Jul 24, 2020

Appl. No.:

16/938156

Inventors:

- Santa Clara CA, US
Nan Jiang - Santa Clara CA, US
Larry Robert Dennison - Menden MA, US
Gregory M. Thorson - Palo Alto CA, US

International Classification:

H04L 12/18
H04L 12/741

Abstract:

A network device configured to perform scalable, in-network computations is described. The network device is configured to process pull requests and/or push requests from a plurality of endpoints connected to the network. A collective communication primitive from a particular endpoint can be received at a network device. The collective communication primitive is associated with a multicast region of a shared global address space and is mapped to a plurality of participating endpoints. The network device is configured to perform an in-network computation based on information received from the participating endpoints before forwarding a response to the collective communication primitive back to one or more of the participating endpoints. The endpoints can inject pull requests (e.g., load commands) and/or push requests (e.g., store commands) into the network. A multicast capability enables tasks, such as a reduction operation, to be offloaded to hardware in the network device.

US Patent:

20210036881, Feb 4, 2021

Filed:

Jul 24, 2020

Appl. No.:

16/938044

Inventors:

- Santa Clara CA, US
Nan Jiang - Santa Clara CA, US
Larry Robert Dennison - Menden MA, US

International Classification:

H04L 12/18
G06F 9/50
H04L 12/927
H04L 12/813
H04L 12/801

Abstract:

A network device configured to perform scalable, in-network computations is described. The network device is configured to process pull requests and/or push requests from a plurality of endpoints connected to the network. A collective communication primitive from a particular endpoint can be received at a network device. The collective communication primitive is associated with a multicast region of a shared global address space and is mapped to a plurality of participating endpoints. The network device is configured to perform an in-network computation based on information received from the participating endpoints before forwarding a response to the collective communication primitive back to one or more of the participating endpoints. An injection policy comprising the issuing of credits enables each endpoint to limit the amount of collective communication primitives injected into the network simultaneously to reduce network congestion caused by increased network traffic due to the multicast capability of the network devices.

US Patent:

20210037107, Feb 4, 2021

Filed:

Jul 24, 2020

Appl. No.:

16/938097

Inventors:

- Santa Clara CA, US
Nan Jiang - Santa Clara CA, US
Larry Robert Dennison - Menden MA, US
Gregory M. Thorson - Palo Alto CA, US

International Classification:

H04L 29/08
H04L 12/18
H04L 12/741

Abstract:

A network device configured to perform scalable, in-network computations is described. The network device is configured to process pull requests and/or push requests from a plurality of endpoints connected to the network. A collective communication primitive from a particular endpoint can be received at a network device. The collective communication primitive is associated with a multicast region of a shared global address space and is mapped to a plurality of participating endpoints. The network device is configured to perform an in-network computation based on information received from the participating endpoints before forwarding a response to the collective communication primitive back to one or more of the participating endpoints. The endpoints can inject pull requests (e.g., load commands) and/or push requests (e.g., store commands) into the network. A multicast capability enables tasks, such as a reduction operation, to be offloaded to hardware in the network device.

US Patent:

20190297018, Sep 26, 2019

Filed:

Feb 15, 2019

Appl. No.:

16/277349

Inventors:

- Santa Clara CA, US
Nan Jiang - Santa Clara CA, US
John Wortman - Santa Clara CA, US
Alex Ishii - Santa Clara CA, US
Mark Hummel - Santa Clara CA, US
Rich Reeves - Santa Clara CA, US

International Classification:

H04L 12/801
H04L 12/825
H04L 12/26

Abstract:

Multiple processors are often used in computing systems to solve very large, complex problems, such as those encountered in artificial intelligence. Such processors typically exchange data among each other via an interconnect fabric (such as, e.g., a group of network connections and switches) in solving such complex problems. The amount of data injected into the interconnect fabric by the processors can at times overwhelm the interconnect fabric preventing some of the processors from communicating with each other. To address this problem, techniques are disclosed to enable, for example, processors that are connected to an interconnect fabric to coordinate and control the amount of data injected so that the interconnect fabric does not get overwhelmed.

US Patent:

20170118618, Apr 27, 2017

Filed:

Jan 6, 2017

Appl. No.:

15/399845

Inventors:

- Atlanta GA, US
Ann E. Skudlark - San Ramon CA, US
Nan Jiang - Madison NJ, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04W 4/26
H04L 12/58
H04W 4/00
H04W 4/14
H04L 29/12

Abstract:

A method and system for identifying short message service (SMS) spammers identifies senders as spammers by determining that the senders are sending SMS messages to devices included in a grey phone space. Devices in the grey phone space are identified using various methods including an analysis of call detail records. A grey ratio for a sender is determined as a ratio of messages sent to grey phone numbers by the sender to messages sent to all phone numbers by the sender. A sender is identified based on a difference between the grey ratio for the sender and a second grey ratio being above a threshold.