Optical disk recording system

Abstract

When a "buffer underrun" (BUR) occurs during recording of a visible image on an optical disc, the recording operation is interrupted. As in the case of Type A, when BUR1 occurs after data is transferred by an integral multiple of one revolution, the host device does not discard data but continuously records data from a reference angular position. As in the case of type B, when BUR2 occurs after data is transmitted at a value other than an integer multiple of one revolution, data corresponding to the duration from the position where the BUR occurred to the start position of the next revolution is discarded , continuously record data from this reference angular position. Therefore, it is possible to splice the depictions in a visually smooth manner. In addition, as in the case of Type C, when the amount of data remaining in the buffer is equal to or less than the "buffer underrun" threshold, subsequent data transfer from the host device is interrupted and rendering can be resumed while the host device The device does not discard data.

Description

technical field [0001] The present invention relates to an optical disc recording system for forming a visible image on the disc surface of an optical disc such as CD-R / RW, DVD+R / RW or DVD-R / RW using laser light. Background technique [0002] It is known that visible images such as characters or figures can be recorded on the recording side of an optical disc or on the label side (the side opposite to the recording side) of an optical disc by using laser light. [0003] For example, Patent Document 1 proposes a technique of disposing a visible light characteristic changing layer at a position visible from the label surface of an optical disc, and exposing the visible light characteristic changing layer to a laser beam, thereby changing the visible light characteristic of the layer and drawing Visual image. [0004] Patent Document 2 proposes a technique of using a reversible phase change material for a recording film of an optical disc capable of recording visible images an...

AI Technical Summary

Problems solved by technology

As mentioned above, "buffer underrun" is a phenomenon that cannot be predicted from misalignment, so misalignment and "buffer underrun" cannot be discussed under the same conditions

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