Memory control method using defect register, defect list recording method and defect register creation method in DVD-Replayable playback system

摘要

The present invention relates to a memory control method using a defect register in a DVD-Rewritable playback system. In the conventional control method, a physical ID number read from a disk must be compared with all defect lists stored in a predetermined memory. Since it is necessary to compare with the physical ID number that is input every time, processing time becomes a problem when there are many defect lists, and the management of defect lists is also recorded in a separate memory. Therefore, a separate memory access means is required for comparison. In the present invention, however, the management of the defect list is changed so that the microcomputer manages the defect list so that the entire defect list is compared for each physical ID number input from the disk, and the write delay is eliminated to eliminate the time delay caused by the write control of the error correction memory. Control Placing it changes in a manner that controls the Defect Sector.;The write control unit controls the recording of the error correction memory by referring to the physical sector address input from the disk and the defect register made by the microcomputer, and designates the part that the microcomputer wants to read, and writes whether the defect is synchronized with this. When notifying the control unit, refer to the defect list from the memory managed by the microcomputer as a 16-bit register and update it every time.;By setting the schedule registry like this, it is possible to clearly define whether there is a defect in the microcomputer, and in the write control unit which processes it, the management efficiency is increased, thereby improving the above-mentioned disadvantages.