Thomas Nicholas Howell

US Patent:

58060669, Sep 8, 1998

Filed:

Mar 26, 1996

Appl. No.:

8/624726

Inventors:

Forouzan Golshani - Paradise Valley AZ
Oris D. Friesen - Scottsdale AZ
Thomas H. Howell - Scottsdale AZ

Assignee:

Bull HN Information Systems Inc. - Billerica MA

International Classification:

G06F 1700

US Classification:

707100

Abstract:

A method for integrating the schemas of a plurality of independent and heterogeneous database management systems of a distributed database management system (DDBMS). The DDBMS includes a computer system in which the DDBMS resides and one or more subservient computer systems. The schemas of two of the independent database systems are fetched from the subservient computer systems. The schemas are converted from a relational database form to an object-oriented form. The schemas are then normalized and displayed graphically. Equivalencies are identified and the two schemas are integrated. These steps are repeated until the schemas of all data bases to be integrated have been integrated into a single integrated, or global schema. The global schema is then converted from the object-oriented form to the relational form, and SQL commands are created to allow data from subservient databases to be obtained to create a virtual database residing in the host computer system satisfying the requirements of the global integrated schema.

US Patent:

50180754, May 21, 1991

Filed:

Mar 24, 1989

Appl. No.:

7/328380

Inventors:

Charles P. Ryan - Phoenix AZ
Thomas H. Howell - Scottsdale AZ
Andrew Y. Pan - Phoenix AZ
David W. Rolston - Santa Cruz CA

Assignee:

Bull Hn Information Systems Inc. - Phoenix AZ

International Classification:

G06F 1518

US Classification:

364513

Abstract:

A diagnostic expert system incorporating a cause-effect graph is disclosed in which "yes", "no" and "unknown" are valid possible responses to a query. Each node in the graph is assigned a local decision factor (LDF) based on a given node's desirability for selection during best-first search and a collapsed decision factor (CDF) based on the average values of the LDFs for all its daughter nodes. For a current node being processed, a list of all its daughter nodes is obtained and examined to remove all daughter nodes that have been visited before in the current transition and all daughter nodes which have prerequisites that are not met. Then, the daughter node with the largest LDF is selected and its test function is executed. If the user response is "yes", the daughter node is made the current node, and a list of its daughter nodes is obtained to continue the process. If the user response is "no", the daughter node is added to the closed list, and the process continues with the next daughter node of the current node.

US Patent:

40300676, Jun 14, 1977

Filed:

Dec 29, 1975

Appl. No.:

5/645056

Inventors:

Thomas H. Howell - Scottsdale AZ
Gordon E. Gregg - Tempe AZ
Leonard Rabins - Scottsdale AZ

Assignee:

Honeywell Information Systems, Inc. - Phoenix AZ

International Classification:

G06F 1112

US Classification:

3401461AL

Abstract:

Apparatus for directly decoding and correcting double-bit random errors per word and for detecting triple-bit errors per word is disclosed. Said apparatus comprises a syndrome calculator which operates upon codewords received from memory and generates syndromes. The syndromes are operated upon and translated by a mapping device which generates pointers identifying the bits which are in error. The pointers are then passed through decoding means to generate error words which are summed with the received word from memory to provide a corrected codeword. The syndrome calculator may further provide a parity check signal to determine if a three-bit error is present, in which case the decoding means are not enabled and a signal is generated indicating that a triple-bit error has been detected which is not correctable.

US Patent:

56714181, Sep 23, 1997

Filed:

May 22, 1995

Appl. No.:

8/445637

Inventors:

Forouzan Golshani - Paradise Valley AZ
Thomas H. Howell - Scottsdale AZ

Assignee:

Bull HN Information Systems Inc. - Billerica MA

International Classification:

G06F 944

US Classification:

395705

Abstract:

U2G is a software tool that runs on the GCOS-8 operating system and enables it recognize and process the commonly used commands of the UNIX operating system. U2G is a UNIX-GCOS-8 translator that enables the GCOS-8 to recognize, accept and execute UNIX commands. Thus, it enables the UNIX users to work with the GCOS-8 system without prior training. U2G can translate the most commonly used UNIX commands along with their respective options into equivalent GCOS-8 Time Sharing System (TSS) commands. U2G can be used with a "verbose" mode option which serves to provide descriptive information about the commands and the translation process. The verbose mode is disabled by a "terse" command.

US Patent:

40370933, Jul 19, 1977

Filed:

Dec 29, 1975

Appl. No.:

5/644776

Inventors:

Gordon E. Gregg - Tempe AZ
Thomas H. Howell - Scottsdale AZ
Leonard Rabins - Scottsdale AZ

Assignee:

Honeywell Information Systems, Inc. - Phoenix AZ

International Classification:

G06F 752

US Classification:

235164

Abstract:

The invention comprises circuitry for systematically multiplying two arbitrary field elements in a Galois field GF(2. sup. m). Each element is represented by an m-bit binary number. The multiplicand field element is passed serially through a plurality of m-1 modulo multipliers. The multiplicand and the product from each of the m-1 modulo multipliers are passed through networks which are gated by bits of the multiplier field element forming partial products. The partial products are summed to form the bit representations of the final product.

US Patent:

56196997, Apr 8, 1997

Filed:

May 22, 1995

Appl. No.:

8/443860

Inventors:

Forouzan Golshani - Paradise Valley AZ
Thomas H. Howell - Scottsdale AZ

Assignee:

Bull HN Information Systems Inc. - Billerica MA

International Classification:

G06F 945

US Classification:

395705

Abstract:

U2G is a software tool that runs on the GCOS-8 operating system and enables it recognize and process the commonly used commands of the UNIX operating system. U2G is a UNIX-GCOS-8 translator that enables the GCOS-8 to recognize, accept and execute UNIX commands. Thus, it enables the UNIX users to work with the GCOS-8 system without prior training. U2G can translate the most commonly used UNIX commands along with their respective options into equivalent GCOS-8 Time Sharing System (TSS) commands. U2G can be used with a "Verbose" mode option which serves to provide descriptive information about the commands and the translation process. U2G has on-line help screens and "explain" pages for all of the important concepts and equivalences. U2G enhances the capabilities of GCOS-8 by supporting the important UNIX concept of "aliasing" and the use of shell variables. Further, the UNIX "piping" feature is made available to GCOS-8.

US Patent:

56236670, Apr 22, 1997

Filed:

May 22, 1995

Appl. No.:

8/443859

Inventors:

Forouzan Golshani - Paradise Valley AZ
Thomas H. Howell - Scottsdale AZ

Assignee:

Bull HN Information Systems Inc. - Billierca MA

International Classification:

G06F 945

US Classification:

395705

Abstract:

U2G is a software tool that runs on the GCOS-8 operating system and enables it recognize and process the commonly used commands of the UNIX operating system. U2G is a UNIX-GCOS-8 translator that enables the GCOS-8 to recognize, accept and execute UNIX commands. Thus, it enables the UNIX users to work with the GCOS-8 system without prior training. U2G can translate the most commonly used UNIX commands along with their respective options into equivalent GCOS-8 Time Sharing System (TSS) commands. U2G can be used with a "Verbose" mode option which serves to provide descriptive information about the commands and the translation process. U2G has on-line help screens and "explain" pages for all of the important concepts and equivalences. U2G enhances the capabilities of GCOS-8 by supporting the important UNIX concept of "aliasing" and the use of shell variables.

US Patent:

57971374, Aug 18, 1998

Filed:

Mar 26, 1996

Appl. No.:

8/624722

Inventors:

Forouzan Golshani - Paradise Valley AZ
Oris D. Friesen - Scottsdale AZ
Thomas H. Howell - Scottsdale AZ

International Classification:

G06F 1730

US Classification:

707 4

Abstract:

A method executed by a computer system for converting a database schema in relational form to a schema in object-oriented (00) form. The input is the schema of a database in relational form including all relations of the schema and the primary keys, reference keys, and attributes of each relation. A special data structure (SDS) is created for each primary key based on the number of attributes of the key. Each SDS becomes the basis of an object of the 00 schema produced. Attribute functions and cross-reference functions are created based on the SDSs and reference keys. SQL commands to map the relational input schema to the 00 output schema are identified.