Abstract
Applying PRML signal processing method has enabled SuperDisk, one of the major high capacity floppy disk drive format, to increase the linear density. As a result, the capacity of SuperDisk has increased from 120MB to 240MB. This high density recording technology also contributes to develop "FD32MB", which can store 32MB on traditional floppy disk. Furthermore, we have developed system LSI by integrating read channel, servo, controller and SRAM into one chip. This analog digital mix one chip system LSI will be able to make the product with lower cost, less components and less power consumption.
