Kenneth J Lyons

US Patent:

60062320, Dec 21, 1999

Filed:

Oct 21, 1997

Appl. No.:

8/954965

Inventors:

Kenneth Brent Lyons - Lebanon NJ

Assignee:

AT&T Corp. - New York NY

International Classification:

G06F 1730

US Classification:

707101

Abstract:

The invention is a system and method for database compression which creates partial indexing into compressed sub table blocks of databases. Table rows with the same or related indexing parameters are grouped as "sub-table blocks" and are stored as compressed binary objects, with the indexing fields stored in the same row, external to the binary block. The binary object expands to multiple database rows when accessed via the sub table block interface, thus forming a hierarchical, pre-joined database organization. Mechanisms are provided for creating, accessing, and manipulating the data blocks, and a date-based versioning mechanism. The compression employed is the known Vdelta package, which operates at a byte level to provide a useful compromise between speed and compression efficiency, even for relative short compression blocks. In realistic tests, the I/O time gained through compression results in a time saving which exceeds the processing penalty. The overall compression ratio is data dependent, but in a realistic test it averages about 4.

US Patent:

56236565, Apr 22, 1997

Filed:

Dec 15, 1994

Appl. No.:

8/356095

Inventors:

Kenneth B. Lyons - Lebanon NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06F 1730

US Classification:

395610

Abstract:

A preprocessing script-based data communications system and method that embeds information regarding the previous state of the system within script data. This effectively imposes a state memory upon what would otherwise be a stateless system. Typically, the scripts processed by this system are similar in structure and format to ordinary HTML scripts, with the addition of several commands that facilitate programming embedded state information. Within systems employing the invention a client is afforded the capability of having one script influence another by exploiting the preprocessor imposed state memory. In addition, the invention provides these advantages to a client without the need for storing state information on a data system server, thereby providing increased system security.