David M Choy

Title: Innovations of David M Choy

Introduction

David M Choy is an accomplished inventor based in Los Altos, CA. He holds a total of 5 patents that showcase his expertise in access control systems and multimedia content management. His innovative contributions have significantly impacted the fields of information systems and data management.

Latest Patents

One of his latest patents is titled "Efficient XACML access control processing." This invention presents a highly efficient access control system and method that employs XACML standard-based policies and rules. It provides high-performance resource access control for information systems in large enterprises. The system extracts plain rules from XACML policies, transforms them into atomic rules, and compresses and indexes these rules for fast lookup and retrieval. Access requests are decomposed into atomic requests, which are compressed using the same value mapping as the rules. Index keys derived from compressed atomic request triplets are utilized to look up applicable rules for evaluating access requests to information system resources.

Another significant patent is the "Method, system, and program product to support multiple content-management data models." This invention includes methods, systems, and program products for managing multimedia content. It is built upon a combination of a high-level content model for specific multimedia content types and a low-level physical model for mapping to a data engine. The method, system, and program product represent multimedia content management objects and manage these objects in a relational database. The relational database is designed to represent data across multiple relational database tables, with each table containing at least one row with several columns. Content management is achieved by associating the object as an item to a row in a primary relational database table and linking additional components of the object to other relational database tables.

Career Highlights

David has worked with notable companies such as IBM and EMC Corporation. His experience in these organizations has contributed to his development as a leading inventor in his field.

Collaborations

Some of his coworkers include Lily Liang and Tawei Hu. Their collaboration has likely fostered an environment of innovation and creativity.

Conclusion

David M Choy's contributions to the fields of access control and multimedia content management demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing information systems and data management practices.