Optical disc apparatus and data complementation method

[0043] Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a DVD player which is an example of an optical disc apparatus according to the invention.

[0044] As shown in the block diagram of FIG. 1, the DVD player 1 in the invention is configured so as to include, at least, a DVD unit 10, a control portion 11, an internal memory 12, an external memory 13, a demodulation portion 14, an identification information acquisition portion 15, a decoder portion 16, a data output portion 17, a control program storage portion 18, manipulation buttons 21, and a network connection portion 23.

[0045] The DVD unit 10 includes an optical pickup 101 which projects a laser beam onto a DVD medium Md and which detects reflected light, a turntable 102 which holds the DVD medium Md, and a drive motor 103 which turns the turntable 102. The optical pickup 101 and the drive motor 103 are controlled by the control portion 11. The light detected by th