| 摘要 |
When a copy-inhibited source such as a DVD title or a digital satellite broadcast is inputted, or a DVD-ROM drive is loaded, output of an image signal for an external CRT display or a TV image signal by a VGA controller is inhibited by generating a protect signal under the control of hardware or software, disabling a buffer, a DAC, and a TV encoder, and switching a selector. Accordingly, illicit copying of an image source using output of an image signal for an external image unit can be prevented.
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