Sega Enterprises, Ltd.

Eric Rayburn Hammond

Yusuke Shimizu

Seiji Adachi

Paul Mitchell Heilman, Iii

Yasuhiro Noguchi

Yoichi Uchida

Daniel Luke Poling, Jr

When program data is distributed to users across an open network, such as the Internet, a licensing agreement concluded between a server for the program data and a manager is maintained and the unauthorized copying of program data is prevented. Therefore, to fulfill such the situation, a program data distribution system includes an open network; a file server, connected to the open network, for distributing encrypted program data; a key server, connected to the open network, for distributing a decryption key used to decode the encrypted program data; and a terminal, connected to the open network, for processing program data, the terminal employing the decryption key distributed by the key server to decode the encrypted program data obtained from the file server.

Growing community of inventors

Menlo Park, CA, United States of America

Eric Rayburn Hammond