Hirohisa Yamaguchi, Age 6923792 Barquilla, Mission Viejo, CA 92691

6947952, Sep 20, 2005

May 11, 2000

09/569242

Michael Dean Welch - Irvine CA, US
Hirohisa Yamaguchi - Mission Viejo CA, US

Unisys Corporation - Blue Bell PA

G06F017/30

7071041, 707 8, 707 10, 709203

A method in a computer system executing a client application and an OODBMS and an RDBMS software, which system has a storage medium accessible by the RDBMS software and the OODBMS software being accessible by the client application. The method generates unique object identifiers in a data abstraction layer disposed between the OODBMS and the RDBMS software in response to a parent thread created by the client application. The method includes the steps of creating a child thread that has access to the RDBMS software, which child thread is used exclusively for generating object identifier numbers and for returning the same to the parent thread. A unique object identifier table is created, which is maintained by the child thread. In response to a request by the parent thread for a unique object identifier, the child thread generates a finite number of the unique object identifiers and communicates their values to the parent thread. After this, a recording is made in the table of the fact that a finite number of unique object identifiers have been generated.

7542846, Jun 2, 2009

Feb 7, 2006

11/348821

Masaki Motoyama - Torrance CA, US
Hirohisa Yamaguchi - Mission Viejo CA, US

Alpine Electronics, Inc. - Tokyo
Skill Sets Alliance, Inc. - CA

G01C 21/32
G06F 19/00

701208, 701211, 3409951

A navigation system uses XML/SVG format map data for achieving flexibility in modifying the map data. A method of converting geographic data into the XML/SVG format map data includes the steps of retrieving the geographic data, analyzing the retrieved geographic data for its data elements structure, data type and semantics, and converting the analyzed data to the XML/SVG format map data for use with the navigation system. The XML/SVG format map data is constructed in a layered structure created based on administrative regions such as states, counties and cities. The XML/SVG format map data can be delivered to a remote user as a unit of administrative region through a communication network.

5765160, Jun 9, 1998

Aug 1, 1996

8/691166

Hirohisa Yamaguchi - Mission Viejo CA

Unisys Corp. - Blue Bell PA

G06F 1730

707103

The disclosed invention is a computer-implemented method for registering triggers for processing at the end of each transaction occurring in a database. This method positions a class where a given object exists; and for each trigger in the class, a determination is made if the trigger is in a trigger list of an object link. If it is not, a determination is made if a given object is in an object link of a transaction. If it is not, then the given object is inserted into the object link of the transaction; and then the trigger is inserted in a list of the object link. These steps are repeated until all triggers in the class have been processed. A determination is next made if there is a superclass of the class. If yes, then a superclass, is positioned and the steps are repeated for each trigger in the superclass (i. e. , polymorphic trigger).