Daniel W Engels

US Patent:

7765253, Jul 27, 2010

Filed:

Oct 10, 2008

Appl. No.:

12/249195

Inventors:

Sanjay Sarma - Belmont MA, US
Daniel W. Engels - Lincoln MA, US
Erik L. Nygren - Somerville MA, US
Joseph T. Foley - Cambridge MA, US
David L. Brock - Natick MA, US
Kai-Yeung Sai - Hong Kong, HK

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G06F 15/16

US Classification:

709200, 709245

Abstract:

An object name system (ONS) for locating one or more servers associated with an Electronic Product Code (EPC) is described. The system utilizes translation format strings to translate an EPC to an EPC domain prefix. The ONS server matches the EPC number to the address of a second server which has extensive information about the product. The second server recognizes the incoming EPC's as belonging to a particular object or service.

US Patent:

8102267, Jan 24, 2012

Filed:

Feb 9, 2009

Appl. No.:

12/368290

Inventors:

Darmindra D. Arumugam - Pittsburgh PA, US
Vijayakrishnan Ambravaneswaran - Arlington TX, US
Daniel W. Engels - Colleyville TX, US

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

G08B 13/14

US Classification:

3405727, 3405721, 3405724, 34053923, 340 101, 340 104

Abstract:

A single antenna single reader (SASR) system and method for locating a tag. The reader connects to a single antenna that is in motion. The reader transmits an interrogation signal to the tag. The reader receives a response signal from the tag. The reader determines the range of the tag from the reader, the received signal strength (RSS) of the response signal at the reader from the tag, and the maximum correlation of the response signal at the reader from the tag. The reader determines the location of the tag using range of the tag from the reader, received signal strength and maximum correlation of the response signal.

US Patent:

8509427, Aug 13, 2013

Filed:

May 5, 2011

Appl. No.:

13/101925

Inventors:

Eric Myron Smith - Dallas TX, US
Daniel W. Engels - Colleyville TX, US
Peter Schweitzer - Watertown MA, US
Troy A. Schultz - Cambridge, CA

International Classification:

H04K 1/00
H04K 1/04
H04L 9/00
H04L 9/32

US Classification:

380 28, 380 37, 380263, 380268, 380277, 713170

Abstract:

An encryption and authentication technique that achieves enhanced integrity verification through assured error-propagation using a multistage sequence of pseudorandom permutations. The method generates intermediate data-dependent cryptographic variables at each stage, which are systematically combined into feedback loops. The encryption technique also generates an authentication tag with minimal post processing that is the size of the state.

US Patent:

8515059, Aug 20, 2013

Filed:

Mar 30, 2011

Appl. No.:

13/076357

Inventors:

Daniel W. Engels - Colleyville TX, US
Kenneth Alan Lauffenburger - Plano TX, US
Eric Myron Smith - Dallas TX, US
Troy Hicks - Allen TX, US

International Classification:

H04L 9/28

US Classification:

380 28, 380265

Abstract:

An efficient implementation of a cryptographic processor that dynamically updates the encryption state is described. The cryptographic processor can be implemented with a minimal number of gates, yet still perform cryptographic operations quickly. The cryptographic processor has an interface, a memory, a pseudorandom permutation block and control logic. The interface receives input data blocks and returns cryptographically processed data blocks. The memory is used to store an encryption state of the cryptographic processor. The pseudorandom permutation block transforms a portion of the encryption state that is modified for each input data block by at least the input data block and a previously transformed data block. The control logic routes data in the cryptographic processor to return cryptographically processed data blocks at the interface and update dynamically the encryption state stored in memory using the transformed data blocks from the pseudorandom permutation block.

US Patent:

20070175990, Aug 2, 2007

Filed:

Apr 10, 2007

Appl. No.:

11/733429

Inventors:

Sanjay Sarma - Belmont MA, US
Daniel Engels - Lincoln MA, US
Laxmiprasad Putta - Wellesley MA, US
Sridhar Ramachandran - Watertown MA, US
James Waldrop - Somerville MA, US

International Classification:

G06K 15/00

US Classification:

235383000

Abstract:

A system for routing data in an automatic identification system includes an event management system (EMS), a real-time in-memory data structure (RIED) coupled to the EMS, the RIED for storing event information gathered by the EMS and a task management system (TMS) for ensuring that the RIED is updated by one transaction at a time. With this particular arrangement, a system for managing a large number of real-time events is provided. In one embodiment, the control system can be provided in a distributed hierarchical arrangement. The EMS of each control system can include filters which limit the amount of information provided to the next level in the hierarchy. In this manner the hierarchical control system network acts as a high volume data collector and processor. In some embodiments a level of the hierarchy can be removed spatially and/or temporally from an adjacent level in the hierarchy. This approach results in an intelligent network and also lends itself to scalability. By including optional filters and queues in the EMS, the EMS can be configured as desired.

US Patent:

20070288515, Dec 13, 2007

Filed:

Apr 10, 2007

Appl. No.:

11/733475

Inventors:

Sanjay Sarma - Belmont MA, US
Daniel Engels - Lincoln MA, US
Sridhar Ramachandran - Watertown MA, US
James Waldrop - Somerville MA, US

International Classification:

G06F 17/40
G06F 15/173

US Classification:

707104100, 709238000

Abstract:

A system for routing data in an automatic identification system includes an event management system (EMS), a real-time in-memory data structure (RIED) coupled to the EMS, the RIED for storing event information gathered by the EMS and a task management system (TMS) for ensuring that the RIED is updated by one transaction at a time. With this particular arrangement, a system for managing a large number of real-time events is provided. In one embodiment, the control system can be provided in a distributed hierarchical arrangement. The EMS of each control system can include filters which limit the amount of information provided to the next level in the hierarchy. In this manner the hierarchical control system network acts as a high volume data collector and processor. In some embodiments a level of the hierarchy can be removed spatially and/or temporally from an adjacent level in the hierarchy. This approach results in an intelligent network and also lends itself to scalability. By including optional filters and queues in the EMS, the EMS can be configured as desired.

US Patent:

20100174386, Jul 8, 2010

Filed:

Jul 13, 2009

Appl. No.:

12/501864

Inventors:

Sanjay Sarma - Belmont MA, US
Daniel W. Engels - Lincoln MA, US
Laxmiprasad Putta - Wellesley MA, US
Sridhar Ramachandran - Watertown MA, US
James L. Waldrop - Somerville MA, US

International Classification:

G05B 19/02
G06F 17/30

US Classification:

700 7, 707639, 707E17005

Abstract:

A system for routing data in an automatic identification system includes an event management system (EMS), a real-time in-memory data structure (RIED) coupled to the EMS, the RIED for storing event information gathered by the EMS and a task management system (TMS) for ensuring that the RIED is updated by one transaction at a time. With this particular arrangement, a system for managing a large number of real-time events is provided. In one embodiment, the control system can be provided in a distributed hierarchical arrangement. The EMS of each control system can include filters which limit the amount of information provided to the next level in the hierarchy. In this manner the hierarchical control system network acts as a high volume data collector and processor. In some embodiments a level of the hierarchy can be removed spatially and/or temporally from an adjacent level in the hierarchy. This approach results in an intelligent network and also lends itself to scalability. By including optional filters and queues in the EMS, the EMS can be configured as desired.

US Patent:

20110022567, Jan 27, 2011

Filed:

Aug 2, 2010

Appl. No.:

12/848672

Inventors:

Sanjay Sarma - Belmont MA, US
Daniel W. Engels - Lincoln MA, US
Laxmiprasad Putta - Wellesley MA, US
Sridhar Ramachandran - Watertown MA, US
James L. Waldrop - Somerville MA, US

International Classification:

G06F 17/30
G06F 7/00

US Classification:

707639, 707812, 707E17044

Abstract:

A system for routing data in an automatic identification system includes an event management system (EMS), a real-time in-memory data structure (RIED) coupled to the EMS, the RIED for storing event information gathered by the EMS and a task management system (TMS) for ensuring that the RIED is updated by one transaction at a time. With this particular arrangement, a system for managing a large number of real-time events is provided. In one embodiment, the control system can be provided in a distributed hierarchical arrangement. The EMS of each control system can include filters which limit the amount of information provided to the next level in the hierarchy. In this manner the hierarchical control system network acts as a high volume data collector and processor. In some embodiments a level of the hierarchy can be removed spatially and/or temporally from an adjacent level in the hierarchy. This approach results in an intelligent network and also lends itself to scalability. By including optional filters and queues in the EMS, the EMS can be configured as desired.

Address:

6013 Valentino Ct, Colleyville, TX 76034

Phone:

817-656-7892

VIN:

5FNRL38929B059763

Make:

HONDA

Model:

ODYSSEY

Year:

2009