Donald A Lewine

Author:

Donald Lewine

ISBN #:

0937175730

US Patent:

62302027, May 8, 2001

Filed:

May 1, 1995

Appl. No.:

8/432610

Inventors:

Donald A Lewine - Sudbury MA

International Classification:

G06F 1516

US Classification:

709229

Abstract:

A method is disclosed for determining a user's identity and creating a virtual session using the HTTP protocol without modifying the protocol or changing its stateless nature.

US Patent:

42246814, Sep 23, 1980

Filed:

Dec 15, 1978

Appl. No.:

5/969955

Inventors:

Donald A. Lewine - Marlborough MA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

G06F 1110

US Classification:

364738

Abstract:

Method and apparatus for parity checking of data, particularly in relation to data used and/or generated by an arithmetic logic unit of a data processing system. Parity is generated for all operations but examined only in connection with those operations which results in valid parity. For these operations which do not directly result in valid parity, parity is ignored. A "parity valid" bit is associated with those operations which generate valid parity and a parity error is indicated only when the parity valid bit occurs at the same time as a parity error.

US Patent:

61483435, Nov 14, 2000

Filed:

Aug 18, 1999

Appl. No.:

9/376525

Inventors:

Donald A Lewine - Sudbury MA

International Classification:

G06F 1516

US Classification:

709229

Abstract:

A method is disclosed for determining a user's identity and creating a virtual session using the HTTP protocol without modifying the protocol or changing its stateless nature.

US Patent:

57845654, Jul 21, 1998

Filed:

Feb 5, 1997

Appl. No.:

8/796029

Inventors:

Donald A. Lewine - Sudbury MA

International Classification:

G06F 1516

US Classification:

39520059

Abstract:

A method is disclosed for determining a user's identity and creating a virtual session using the HTTP protocol without modifying the protocol or changing its stateless nature.

US Patent:

42310890, Oct 28, 1980

Filed:

Dec 15, 1978

Appl. No.:

5/969956

Inventors:

Donald A. Lewine - Marlborough MA
Thomas M. Dundon - Marlborough MA
Ronald J. Setera - Leominster MA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

G06F 1116

US Classification:

364200

Abstract:

In a data processing system, a method and apparatus which enable an erroneous microinstruction word to be rewritten before it is executed. After the microinstruction word is written from memory into a control register, a parity network coupled to the control register determines whether a correct microinstruction is being executed. Upon a parity error being detected, the clock pulses to the data paths coupled to the control register are inhibited. The original microinstruction word is then fetched from secondary storage and rewritten into the microinstruction memory with the aid of a separate register providing the address to the microinstruction memory. Upon rewriting the microinstruction memory, the signal inhibiting the clock pulses is removed thereby allowing a new microinstruction to be executed. An additional feature includes apparatus for determining whether an error has previously occurred for the same microinstruction word, in which case a critical fault occurs and remedial maintenance is necessary.

US Patent:

56689179, Sep 16, 1997

Filed:

Dec 29, 1995

Appl. No.:

8/581183

Inventors:

Donald A. Lewine - Sudbury MA

International Classification:

H04N 576

US Classification:

386 52

Abstract:

Unwanted information, such as commercials, is typically transmitted from a transmission station many times each day. The repetitive nature of such unwanted information is used by the present apparatus/method to distinguish unwanted information from normal programming.