Resumes
Resumes
Debashish Purkayastha Phones & Addresses
-
2622 Swede St, Norristown, PA 19401 (610) 279-1156
-
Eagleville, PA
-
1200 E Autumn Ct, Collegeville, PA 19426 (484) 363-3672
-
1045 Fallbrook Ln, Pottstown, PA 19464 (610) 323-6564 (610) 326-7372
-
Lansdale, PA
-
Montgomery, PA
Public records
Vehicle Records
Debashish Purkayastha
View pageAddress:
1200 E Autumn Ct, Collegeville, PA 19426
VIN:
2HNYD28427H527418
Make:
ACURA
Model:
MDX
Year:
2007
Publications
Us Patents
Wireless Communication Components And Methods For Multiple System Communications
View pageUS Patent:
6987985, Jan 17, 2006
Filed:
Dec 16, 2003
Appl. No.:
10/737369
Inventors:
Debashish Purkayastha - Lansdale PA, US
Amarnath Chitti - East Norriton PA, US
Amarnath Chitti - East Norriton PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04M 1/00
US Classification:
4555521, 4554321, 4554352, 455436, 4555501, 4555531, 370331, 370334
Abstract:
A mobile wireless transmit/receive unit (WTRU), components and methods therefor provide continuous communications capability while switching from a wireless connection with a first type of wireless system to a wireless connection with a second type of wireless system. Preferably, the WTRU is configured to switch wireless links from a Universal Mobile Telecommunications System (UMTS) to a wireless local area network (WLAN) or vice versa during a continuous communication session. The invention is preferably implemented by providing an Application Broker for control signaling and a Communications broker for user data flow which may be embodied in an application specific integrated circuit (ASIC).
Wireless Communication Components And Methods For Multiple System Communications
View pageUS Patent:
7204746, Apr 17, 2007
Filed:
Dec 16, 2005
Appl. No.:
11/303376
Inventors:
Debashish Purkayastha - Lansdale PA, US
Amarnath Chitti - East Norriton PA, US
Amarnath Chitti - East Norriton PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04M 1/00
US Classification:
4515521, 4554321, 4554351, 455436, 455439, 455442, 455444, 455448, 4555501, 4555531, 370331, 370332, 370 33 Y
Abstract:
A mobile wireless transmit/receive unit (WTRU), components and methods therefor provide continuous communications capability while switching from a wireless connection with a first type of wireless system to a wireless connection with a second type of wireless system. Preferably, the WTRU is configured to switch wireless links from a Universal Mobile Telecommunications System (UMTS) to a wireless local area network (WLAN) or vice versa during a continuous communication session. The invention is preferably implemented by providing an Application Broker for control signaling and a Communications broker for user data flow which may be embodied in an application specific integrated circuit (ASIC).
Method And Apparatus For Generating, Sensing, And Adjusting Watermarks
View pageUS Patent:
7272240, Sep 18, 2007
Filed:
Nov 23, 2005
Appl. No.:
11/286005
Inventors:
Steven Jeffrey Goldberg - Downingtown PA, US
Debashish Purkayastha - Pottstown PA, US
Debashish Purkayastha - Pottstown PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
G06K 9/00
US Classification:
382100
Abstract:
A method and apparatus for generating and adjusting a watermark in a watermarking system comprising a watermark generator and a watermark detector includes the watermark generator emitting the watermark. The watermark detector detects the watermark. The watermark detector transmits a signal to the watermark generator. The watermark generator then adjusts the generated watermark based on the signal received from the watermark detector.
Tokens/Keys For Wireless Communications
View pageUS Patent:
7532723, May 12, 2009
Filed:
Nov 23, 2004
Appl. No.:
10/996493
Inventors:
Prabhakar R. Chitrapu - Blue Bell PA, US
Alain Charles Louis Briancon - Poolesville MD, US
Akinlolu Oloruntosi Kumoluyi - Plainfield NJ, US
Alan Gerald Carlton - Mineola NY, US
Kiran Kumar S. Vanganuru - Vienna VA, US
Richard Dan Herschaft - Whitestone NY, US
John Erich Hoffmann - Indialantic FL, US
John Thommana - Austin TX, US
Debashish Purkayastha - Pottstown PA, US
Guodong Zhang - Farmingdale NY, US
Robert Lind Olesen - Huntington NY, US
Alexander Reznik - Titusville NJ, US
TieJun Shan - Upper Salford PA, US
Amit Singhal - King of Prussia PA, US
Alain Charles Louis Briancon - Poolesville MD, US
Akinlolu Oloruntosi Kumoluyi - Plainfield NJ, US
Alan Gerald Carlton - Mineola NY, US
Kiran Kumar S. Vanganuru - Vienna VA, US
Richard Dan Herschaft - Whitestone NY, US
John Erich Hoffmann - Indialantic FL, US
John Thommana - Austin TX, US
Debashish Purkayastha - Pottstown PA, US
Guodong Zhang - Farmingdale NY, US
Robert Lind Olesen - Huntington NY, US
Alexander Reznik - Titusville NJ, US
TieJun Shan - Upper Salford PA, US
Amit Singhal - King of Prussia PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04L 9/00
G06F 7/58
G06F 7/58
US Classification:
380 44, 726 9
Abstract:
Tokens/keys are produced for wireless communications. These tokens/keys are used for watermarks, signature insertion, encryption and other uses. In one embodiment, contextual information is used to generate tokens/keys. The tokens/keys may be derived directly from the contextual information. The contextual information may be used in conjunction with other information to derive the tokens/keys. Tokens/keys may be exchanged between transmit/receive units. The exchange of these tokens/keys may be encrypted.
Method And Apparatus For Alerting A Target That It Is Subject To Sensing And Restricting Access To Sensed Content Associated With The Target
View pageUS Patent:
7574220, Aug 11, 2009
Filed:
Nov 30, 2005
Appl. No.:
11/290101
Inventors:
Debashish Purkayastha - Pottstown PA, US
John Thommana - Cedar Rapids IA, US
John Thommana - Cedar Rapids IA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04M 1/66
H04B 1/38
H04W 24/00
H04M 1/00
H04B 1/38
H04W 24/00
H04M 1/00
US Classification:
4554561, 455411, 4554562, 4554565, 4554566, 4555501, 455 73
Abstract:
A method and apparatus for protecting sensed content and warning a target of sensing is disclosed. A first transceiver, (e. g. , a network server), includes a database which defines at least one zone in which sensing a target is not permitted. A second transceiver, (e. g. , a cell phone), senses a target to obtain content and temporarily stores the content in a memory, after being encrypted. The cell phone transmits information to the network server which indicates the location of the cell phone. The network server receives the location information from the cell phone and determines whether the target was sensed in a “Do Not Disturb Zone”. If so, the network server instructs the cell phone to delete the encrypted content from the memory. Otherwise, the network server indicates to the cell phone that the temporarily stored content may be decrypted, stored in a permanent memory and used as desired.
Wireless Communication Method And Apparatus For Generating, Watermarking And Securely Transmitting Content
View pageUS Patent:
7599515, Oct 6, 2009
Filed:
Mar 17, 2005
Appl. No.:
11/082451
Inventors:
John Thommana - Austin TX, US
Debashish Purkayastha - Pottstown PA, US
Alain Charles Louis Briancon - Poolesville MD, US
Debashish Purkayastha - Pottstown PA, US
Alain Charles Louis Briancon - Poolesville MD, US
Assignee:
InterDigital Technology Corporation - Wilmington DC
International Classification:
G06K 9/00
H04K 1/00
H04L 9/32
H04K 1/00
H04L 9/32
US Classification:
382100, 380270, 713176
Abstract:
A method and apparatus for securing transmission of content created by a content generation device embedded in a wireless transmit/receive unit (WTRU) by determining what type of watermarks should be applied to the content and incorporating the watermarks in the content. The WTRU includes a content generation unit, a watermark incorporation unit, and a communication subsystem. The content generation unit is embedded in the WTRU and generates content, such as audio, video, image, text or a combination thereof. The watermark incorporation unit determines the type of watermarks that should be incorporated in the content and incorporates the watermarks in the content. The communication subsystem transmits the watermarked content.
System For Application Server Autonomous Access Across Different Types Of Access Technology Networks
View pageUS Patent:
8014367, Sep 6, 2011
Filed:
Nov 12, 2004
Appl. No.:
10/987773
Inventors:
Alan Gerald Carlton - Mineola NY, US
Narayan Parappil Menon - Syosset NY, US
Debashish Purkayastha - Pottstown PA, US
Narayan Parappil Menon - Syosset NY, US
Debashish Purkayastha - Pottstown PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04Q 7/24
H04J 3/16
H04J 3/16
US Classification:
370338, 370466
Abstract:
An Application Server Autonomous Access (ASAA) system for providing autonomous access to a wireless infrastructure by devices employing different types of access technology. The system includes a server, having an associated data storage device, for storing at least one policy, and a plurality of subnetworks, coupled to server, for providing access to the server. The plurality of subnetworks employ at least two different types of access technology. A plurality of wireless transmit/receive units (WTRUs) are wirelessly coupled to at least one of the subnetworks. The server monitors the wireless coupling and, depending upon the at least one policy, switches the WTRUs between different ones of the subnetworks.
Method And Apparatus For Reporting Wlan Capabilities Of Dual Mode Gprs/Wlan Or Umts/Wlan Wtru
View pageUS Patent:
8102823, Jan 24, 2012
Filed:
Mar 17, 2005
Appl. No.:
11/083125
Inventors:
Debashish Purkayastha - Lansdale PA, US
Kamel M. Shaheen - King of Prussia PA, US
Kamel M. Shaheen - King of Prussia PA, US
Assignee:
InterDigital Technology Corporation - Wilmington DE
International Classification:
H04W 4/00
US Classification:
370338
Abstract:
Method and apparatus for enabling a wireless terminal to communicate the dual-mode capabilities and reporting the interworking capabilities of the two networks with which the wireless terminal have the added capability of obtaining services from either one of the interworking networks.