Information recording device for recording and/or reproducing management

Abstract

An optical card information recording and reproducing device is composed of a controller for controlling data transfer to and from an external unit and the overall operation of the device, a memory for temporarily holding data to be recorded and data to be reproduced, a read/write unit for reading and writing data from and on an optical card, a directory size discrimination unit for discriminating a directory size, a directory size switch unit for switching directory sizes to be used for recording, two record controllers for controlling the read/write unit in accordance with each directory size, and a partition switch unit for controlling the directory size discrimination unit and the directory size switch unit in response to partition information and the like from the controller. The partition switch unit identifies the arrangement of directory information by the partition information from the controller and a sector type and controls the directory size discrimination unit and the directory size switch unit based on the arrangement of the directory information. Further, the directory size discrimination unit, the directory size switch unit and the record controllers constitute a directory information creation device for discriminating the directory size based on the arrangement of the directory information and creating directory information in accordance with the directory size.