Joseph C Greco

US Patent:

61950238, Feb 27, 2001

Filed:

Dec 10, 1998

Appl. No.:

9/208788

Inventors:

Robert E. Walsh - McCandless PA
Joseph A. Greco - Washington PA

Assignee:

DaimlerChrysler AG

International Classification:

G08G 1123

US Classification:

340988

Abstract:

A communication based vehicle positioning reference system that includes a vehicle path. The vehicle path is divided into regions, wherein the regions contain a portion of the vehicle path. Each portion of the vehicle path contained within a respective region is defined by one or more segments. A position of a vehicle on the vehicle path is identified by a local coordinate system S. sub. xyz, where S is a vehicle identifier,. sub. x is a specific region,. sub. y is a specific segment contained within the region and. sub. z is the position of the vehicle within the specific segment. The vehicle path can be represented on a map. Each of the segments can be identified by a character string that includes the indicia relating to the region the segment is located and a segment name. A plurality of computers can be provided which include only a portion of the map. Also, disclosed is a method for identifying the position of a vehicle along a vehicle path.

US Patent:

46850686, Aug 4, 1987

Filed:

Aug 20, 1985

Appl. No.:

6/767733

Inventors:

Joseph A. Greco - Silver Spring MD
Donald K. Hawkins - College Park MD
Scott R. LeGrys - Burtonsville MD
Wai Kit Man - Silver Spring MD

Assignee:

The Singer Company - Silver Spring MD

International Classification:

G06F 1566
H04N 146
G06K 946

US Classification:

364518

Abstract:

System and method for processing information from a paper map source to produce an accurate high resolution digitized map database in matrix format having separate files for each selected feature. The system and method scans the input paper map source and processes the scanned data into a digitized map database in matrix format with distinct and selectable features as are represented on the input map. Selected features include vegetation, hydrography, lines of communication, miscellaneous features, and terrain elevation. The use of separate files significantly reduces the processing time required by application programs used to analyze or display the data relating to a particular feature.