Patents Assigned to Kabushkuki Kaisha Sega Enterprises
  • CD-ROM disk and security check method for the same
    Patent number: 5371792
    Abstract: A CD-ROM disk comprises an identifier region having a disk identifier recorded in and a security code region having a security code recorded in. The identifier region and the security code region are provided in one sector of a boot sector to be read when actuated. The disk identifier includes a preset identification code, and the security code includes at least a program to be executed after check of the security code, and display data for displaying a license.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: December 6, 1994
    Assignee: Kabushkuki Kaisha Sega Enterprises
    Inventors: Toshinori Asai, Masaki Kawahori