Patent ID: 8775695
Filing Date: 2014-07-08
Classification: G06F

Abstract:
1. A specific identification information management device coupled to a feature expansion device, the specific identification information management device comprising: a storage unit to store specific identification information of the feature expansion device; a detection circuit to detect an access signal transmitted to the feature expansion device from an operating system to read out specific identification information that the feature expansion device has; a control circuit to transmit the specific identification information stored in the storage unit as a response to the access signal to the operating system when the detection circuit detects the access signal to the feature expansion device; and a bus control circuit to block the access signal transmitted to the feature expansion device from the operating system to read out the specific identification information that the feature expansion device has when the access signal to the feature expansion device is detected, wherein when the feature expansion device is replaced with a different feature expansion device and the detection circuit detects the access signal transmitted to the different feature expansion device from the operating system to read out specific identification information that the different feature expansion device has, the bus control circuit blocks the access signal to read out the specific identification information that the different feature expansion device has, and the control circuit transmits the specific identification information of the feature expansion device stored in the storage unit to the operating system.