Information processing apparatus and operation control method for use in the same
AssigneeKabushiki Kaisha Toshiba
InventorsHiroaki Chiba, Shigeru Kizaki
Life of this patent
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Abstract
According to one embodiment, an information processing apparatus includes an external display connection terminal, a display controller which receives video data from software and generates a digital video signal from the received video data, an interface control circuit which outputs the digital video signal, which is generated by the display controller, to an outside via the external display connection terminal, and a control unit which sets the interface control circuit in an operative state after an operating system, which has a content protection function for protecting the video data against unlawful use, is booted up.
Claims14
An information processing apparatus comprising:
- an external display connection terminal;
- a display controller which receives video data from software and generates a digital video signal from the received video data;
- an interface control circuit which outputs the digital video signal, which is generated by the display controller, to an outside via the external display connection terminal;
- and
- a control unit which sets the interface control circuit in an operative state after an operating system, which has a content protection function for protecting the video data against unlawful use, is booted up.
An information processing apparatus comprising:
- a main body;
- an external display connection terminal which is provided on the main body;
- a display controller which is provided in the main body, receives video data from software and generates a digital video signal from the received video data;
- means for executing an authentication process for determining whether an external display device, which is connected to the external display connection terminal, is a lawful device;
- an interface control circuit which is provided in the main body, and outputs the digital video signal, which is generated by the display controller, to the external display device via the external display connection terminal when the external display device is determined to be the lawful device;
- and
- control means for setting a reset signal for resetting the interface control circuit in an active state in response to power-on of the main body, and setting the reset signal in an inactive state after an operating system, which has a content protection function for executing transmission of the video data from the software to the display controller in a secure state, is booted up.
An operation control method for controlling an operation of an information processing apparatus including an external display connection terminal, a display controller which receives video data from software and generates a digital video signal from the received video data, and an interface control circuit which outputs the digital video signal, which is generated by the display controller, to an outside via the external display connection terminal, the method comprising:
- setting the interface control circuit in an inoperative state in response to power-on of the information processing apparatus;
- and
- setting the interface control circuit in an operative state after an operating system, which has a content protection function for protecting the video data against unlawful use, is booted up.
Dependencies are inferred from the claim text.