Patent ID: 8484735
Filing Date: 2013-07-09
Classification: G06F

Abstract:
1. An apparatus comprising: a processor which executes a procedure comprising, a first operating system (OS) and a trusted second OS, each executing a process and outputting a display request for displaying a result of the execution of the process, the first OS managing operations of application programs, and the trusted second OS managing operations of a group of software elements whose reliability have been confirmed by a security device independently of the first OS; the first OS and the trusted second OS causing a display device to output display data that indicates a drawing screen complying with the display request; deciding a legality of a transmission source of the display request based on a judgment as to which of the first OS and the trusted second OS the display request to display the display data on a frame for the trusted second OS is requested from, and making an output request for information capable of confirming a reliability of the display data on the basis of a result of the decision; and the trusted second OS outputting the information capable of confirming the reliability of the display data complying with the output request, separately from the display data.