Command executing method of information reproducing apparatus, record medium for recording program that causes information reproducing apparatus to execute command, and disc reproducing apparatus

Abstract

A disc reproducing apparatus reproduces information as a digital signal from a disc, having an interface for sending and receiving a reproduction signal and a command to/from a host computer, comprising a processor unit for controlling the operation of the disc reproducing apparatus, a first signal transfer path, connected to the inter-face, for transferring a command signal corresponding to a command received from the host computer to the processor unit, an operating unit, disposed in the disc reproducing apparatus, for generating an operation signal corresponding to a user's operation, and a second signal transfer path, connected to the operating unit, for transferring an operation signal corresponding to the user's operation of the operating unit to the processor unit, wherein the processor unit determines whether or not to validate the execution of the command of the command signal transferred from the host computer through the first signal transfer path corresponding to the operation signal transferred from the operating unit through the second signal transfer path. Since the content of the operation of the disc reproducing apparatus can be freely selected by the user, even if a computer virus knows the command execution restricting function, the computer virus does not know the content of the operation of the operating portion.