Patent ID: 8516600
Filing Date: 2013-08-20
Classification: G06F,G11B

Abstract:
1. An information processing device for executing content reproduction processing from an information recording medium, comprising: a security information processing means for determining an output message based on security check information in a content reproduction sequence, and for outputting an output message to an application executing device; an application executing means for obtaining the output message from the security information processing means; a first register configured to receive data written from the security information processing means and provide data read by the application executing means; a second register configured to receive data written from the application executing means and provide data read by the security information processing means; and a third register configured to receive and provide processing status data which is both written and read by both the security information processing means and the application executing means, wherein a write notification is made to the security information processing means when the data is written at the second register, the first register is a register to which the security information processing means executes write actions and from which the application executing means executes read actions, the second register is a register to which the application executing means executes write actions and from which the security information processing means executes read actions, and the third register is a register in which both the security information processing means and the application executing means execute write and read actions, the application executing means, the security information processing means, and the first and second registers are configured such that: the security information processing means does not execute a write action to the second register and does not execute a read action from the first register, and the application executing means does not execute a write action to the first register and does not execute a read action from the second register.