John W Recker

US Patent:

7292187, Nov 6, 2007

Filed:

Dec 10, 2004

Appl. No.:

11/009099

Inventors:

John Ludd Recker - Mountain View CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G01S 3/02

US Classification:

342458, 342463

Abstract:

A position for a beacon in a location system is determined based on distances measured from positions in a local coordinate system for the location system and from intersection points of circles. The circles each have a center point of one of the positions in the local coordinate system and a radius of one of the measured distances.

US Patent:

7817047, Oct 19, 2010

Filed:

Aug 12, 2006

Appl. No.:

11/503695

Inventors:

Cyril Brignone - Mountain View CA, US
Malena Mesarina - San Francisco CA, US
John Recker - Mountain View CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G08B 23/00

US Classification:

3405734, 235375, 3405721

Abstract:

Systems and methods for configuring behaviors of sensors and actuators in a sensor network include receiving behavior ID tag information uniquely identifying a behavior, and configuring behavior in the sensor network according to the identified behavior. Behavior configuration may be effected by programming the sensors and actuators directly, or by programming a computing node connected to the sensors and actuators.

US Patent:

7937167, May 3, 2011

Filed:

Aug 12, 2006

Appl. No.:

11/503598

Inventors:

Malena Mesarina - San Francisco CA, US
Devaraj Das - Ft. Collins CO, US
John Recker - Mountain View CA, US

Assignee:

Hewlett-Packard Development Company L. P. - Houston TX

International Classification:

G05B 11/01

US Classification:

700 78, 700 19, 370254, 34087011, 34087016

Abstract:

Embodiments of the invention employ a distributed algorithm to enable sensor nodes in a sensor network to adaptively self-configure into sensor clusters to provide a desired higher-level functionality.

US Patent:

8052055, Nov 8, 2011

Filed:

Jan 31, 2007

Appl. No.:

11/701225

Inventors:

John Recker - Mountain View CA, US
Malena Mesarina - San Francisco CA, US
Salil Pradhan - San Jose CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06K 19/06

US Classification:

235451, 235441

Abstract:

Methods and systems of the present invention employ perturbation techniques for configuring RFID-tag-reader networks in order to achieve increased overall efficiency of a network of RFID-tag readers. According to described embodiments of the present invention, individual RFID-tag readers within a multi-RFID-tag-reader network may be removed or shut down, or RFID-tag readers may be displaced relative to one another, in order to remove interferences between RFID-tag readers and to increase the interrogation efficiency of the multi-RFID-tag-reader network.

US Patent:

8093989, Jan 10, 2012

Filed:

Dec 6, 2006

Appl. No.:

11/635738

Inventors:

Vinay Deolaliker - Mountain View CA, US
John L. Recker - Mountain View CA, US
Malena R. Mesarina - San Francisco CA, US
Salil Pradhan - Santa Clara CA, US

International Classification:

H04Q 5/22

US Classification:

340 102, 3405721, 340 104

Abstract:

Methods and systems of the present invention employ perturbation techniques for configuring RFID-tag-reader networks in order to achieve increased overall efficiency of a network of RFID-tag readers. According to described embodiments of the present invention, individual RFID-tag readers within a multi-RFID-tag-reader network may be removed or shut down, or RFID-tag readers may be displaced relative to one another, in order to remove interferences between RFID-tag readers and to increase the interrogation efficiency of the multi-RFID-tag-reader network. A method embodiment of the present invention schedules a multi-RFID-tag-reader network as a cycle of power-on/power-off intervals.

US Patent:

8149094, Apr 3, 2012

Filed:

Apr 30, 2007

Appl. No.:

11/799146

Inventors:

John Recker - Mountain View CA, US
Malena Mesarina - San Francisco CA, US
Salil Pradhan - San Jose CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

H04Q 5/22

US Classification:

340 102, 3405721, 340 104

Abstract:

Methods and systems of the present invention are directed to clustering RFID-tag readers of a multi-RFID-tag-reader network in order to obtain a set of RFID-tag readers with high probability of detecting an event, but with low probability of collisions and with an acceptable cost. The cost may be determined by any of numerous cost functions of the RFID-tag readers in the set of RFID-tag readers, and may represent a cost in power, long-term reliability, and other such metrics that may be applied to an RFID-tag network.

US Patent:

8200782, Jun 12, 2012

Filed:

Apr 29, 2005

Appl. No.:

11/118148

Inventors:

Salil Vijaykumar Pradhan - San Jose CA, US
Craig Peter Sayers - Menlo Park CA, US
John Ludd Recker - Mountain View CA, US
Alan Andrew McReynolds - Los Altos CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 15/177

US Classification:

709218, 709201, 709202, 709203, 709226, 709229

Abstract:

An embodiment of a synchronizer for a mobile device comprises memory for containing identification data and message data. The synchronizer is operative at least part of the time when the mobile device is inactive to establish communication with a base station, to provide from memory identification data enabling the base station to establish communication between the synchronizer and a server and, where message data is waiting to be transferred between the server and the mobile device, to enable transfer of message data waiting to be transferred. The synchronizer is operative when the mobile device is active to transfer message data between the mobile device and the memory of the synchronizer.

US Patent:

8493403, Jul 23, 2013

Filed:

Sep 4, 2009

Appl. No.:

12/554515

Inventors:

Ingeborg Tastl - San Mateo CA, US
John Ludd Recker - Mountain View CA, US
Yao Zhang - Davis CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G09G 5/02

US Classification:

345600, 345603, 345604

Abstract:

Color transformation sample point identification is described. A subset of points from a superset of points representing a colorimetric relationship is identified. The subset of points defines an initial n-simplex with (n+1) points representing an approximation of the colorimetric relationship, where n represents a number of dimensions. An additional point from the superset of points is selected and added to the subset of points to replace the n-simplex with a set of at least two n-simplices. The additional point is selected such that a volume of an (n+1)-simplex formed by the (n+1) points of the initial n-simplex and the additional point is increased. An error value for the approximation is determined by calculating an error volume between the (n+1)-simplex and the superset of points.