Patent ID: 9183357
Filing Date: 2015-11-10
Classification: G06F,G11B,H04L,H04N

Abstract:
1. A recording-playback system comprising: a recording medium device; and a recording-playback device, wherein the recording medium device includes a controller that is tamper-resistant and a memory, the controller includes: the memory includes the controller-specific identification information is a digital signing target of the certification subunit, the controller-specific identification information is a media ID identifying the recording medium device, and the value generated by the controller vendor is a portion of a media ID, and the value obtained from the center for the manufacturer of the recording medium device is the remaining portion of the media ID, and the recording-playback device includes: a second non-transitory memory that stores a program, and a second hardware processor that executes the program to cause the recording-playback device to operate as: