Thomas Marshall Collins

US Patent:

6378072, Apr 23, 2002

Filed:

Feb 3, 1998

Appl. No.:

09/017759

Inventors:

Thomas Collins - Saratoga CA
John Gregory - Livermore CA
Ralph Bestock - Los Altos CA

Assignee:

Compaq Computer Corporation - Houston TX

International Classification:

H04L 900

US Classification:

713187, 713161, 713193

Abstract:

A cryptographic system and method for encrypting and decrypting data using public key cryptography. The encryption and decryption may be divided into tasks that may operate in parallel. A secure method of initializing the cryptographic system to allow for secure operations and protect against tampering with application software. The application program is retrieved from an encrypted file in external memory and authenticated before being executed.

US Patent:

7055029, May 30, 2006

Filed:

Sep 7, 2001

Appl. No.:

09/949323

Inventors:

Thomas Collins - Saratoga CA, US
John Gregory - Livermore CA, US
Ralph Bestock - Los Altos CA, US

Assignee:

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

International Classification:

H04L 9/00

US Classification:

713161, 713176, 713193, 380262

Abstract:

Ownership of a secure process is enabled with a cryptographic system. Methods initializing and operating the cryptographic system transfer control from the loading program to the loaded program and, in essence from the cryptographic system vendor to its end-user. As a result, ownership of the secure process can be relinquished to the end-user so that it alone can subsequently use the cryptographic system to control the secure process of loading and running its user-programs. The cryptographic system and methods allow for secure operations and protect against tampering with application software. The application program is retrieved from an encrypted file in external memory and authenticated by the cryptographic system before being executed.

US Patent:

7231040, Jun 12, 2007

Filed:

Oct 26, 1998

Appl. No.:

09/328726

Inventors:

Thomas Collins - Saratoga CA, US
Dale Hopkins - Gilroy CA, US
Susan Langford - Sunnyvale CA, US
Michael Sabin - Sunnyvale CA, US

Assignee:

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

International Classification:

H04K 1/00
H04L 9/00

US Classification:

380 28, 713200

Abstract:

A method and apparatus are disclosed for improving public key encryption and decryption schemes that employ a composite number formed from three or more distinct primes. The encryption or decryption tasks may be broken down into sub-tasks to obtain encrypted or decrypted sub-parts that are then combined using a form of the Chinese Remainder Theorem to obtain the encrypted or decrypted value. A parallel encryption/decryption architecture is disclosed to take advantage of the inventive method.

US Patent:

RE40530, Oct 7, 2008

Filed:

Oct 20, 2000

Appl. No.:

09/694416

Inventors:

Thomas Collins - Saratoga CA, US
Dale Hopkins - Gilroy CA, US
Susan Langford - Sunnyvale CA, US
Michael Sabin - Sunnyvale CA, US

Assignee:

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

International Classification:

H04L 9/30
H04L 9/00

US Classification:

380 30, 380 29

Abstract:

A method and apparatus are disclosed for improving public key encryption and decryption schemes that employ a composite number formed from three or more distinct primes. The encryption or decryption tasks may be broken down into sub-tasks to obtain encrypted or decrypted sub-parts that are then combined using a form of the Chinese Remainder Theorem to obtain the encrypted or decrypted value. A parallel encryption/decryption architecture is disclosed to take advantage of the inventive method. REEXAMINATION RESULTS.

US Patent:

41752899, Nov 20, 1979

Filed:

Jun 5, 1978

Appl. No.:

5/912805

Inventors:

Thomas W. Collins - Saratoga CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11C 1908

US Classification:

365 15

Abstract:

A magnetic bubble switch operates in a drive-to-transfer mode when a rotating magnetic field is applied. The switch has a magnetic element in the shape that defines the letter "Y" having two arms and a stem. The switch has at least one serration on the arm of the Y in the vicinity of the stem. The switch has a conductor which is positioned across the end of the stem of the Y. A magnetic element is positioned so as to form a gap with the stem of the Y.

US Patent:

41568184, May 29, 1979

Filed:

Dec 23, 1975

Appl. No.:

5/643999

Inventors:

Thomas W. Collins - Saratoga CA
Karl R. Hense - Los Altos CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11C 1928
H01L 2978
H03K 520
H03H 728

US Classification:

307221D

Abstract:

Operating circuitry for linear charge launching, non-destructive weighting and non-destructive charge sensing for Charge Coupled Devices (CCD) employs electronic integrating circuitry at the input and output node terminals of the CCD. Feedback circuitry within the integrating circuitry aids in linearizing the signals, in eliminating the non-linear capacitance effect of the depletion regions, and in freeing the design from device parameter variations such as electrode area and absolute values of threshold potential and thickness of insulating layer. The circuitry is adaptable to most conventional CCD and is readily made up of conventional resistance and capacitance elements, of conventional comparing circuits such as differential amplifying or signal repeating circuits, and of conventional summing circuitry.

US Patent:

43864171, May 31, 1983

Filed:

Jun 30, 1981

Appl. No.:

6/280024

Inventors:

Thomas W. Collins - Saratoga CA
Michael G. Hurley - Cupertino CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11C 1908

US Classification:

365 12

Abstract:

A major/minor loop bubble memory system architecture includes a passive replicator in the major loop read channel which is connected by a first path to a mode switch-annihilator and a merge point in the major loop write channel and by a second path to an off-chip decision-making means and the merge point in the write channel. The decision-making means is positioned the same or fewer propagation steps than the mode switch-annihilator is from the replicator. The decision making means is activated to cause either the replicated data to pass through the mode switch-annihilator into the write channel or the replicated data to be annihilated in the mode switch-annihilator and the data from a generator to pass into the write channel.

US Patent:

58481591, Dec 8, 1998

Filed:

Jan 16, 1997

Appl. No.:

8/784453

Inventors:

Thomas Collins - Saratoga CA
Dale Hopkins - Gilroy CA
Susan Langford - Sunnyvale CA
Michael Sabin - Sunnyvale CA

Assignee:

Tandem Computers, Incorporated - Cupertino CA

International Classification:

H04L 930
H04L 900

US Classification:

380 30

Abstract:

A method and apparatus are disclosed for improving public key encryption and decryption schemes that employ a composite number formed from three or more distinct primes. The encryption or decryption tasks may be broken down into sub-tasks to obtain encrypted or decrypted sub-parts that are then combined using a form of the Chinese Remainder Theorem to obtain the encrypted or decrypted value. A parallel encryption/decryption architecture is disclosed to take advantage of the inventive method.