Kabushiki Kaisha Toshiba

Koichi Awazu

Kiyoshi Murase

Takashi Iwashita

Jung-Tsung Lui

An optical disc drive control apparatus according to the present invention comprises a disc drive into or from which various optical discs are inserted or ejected. The system includes a first memory for storing various players that play back various optical discs, a second memory for storing a table in which combinations of various information recording mediums and various players corresponding to these mediums are written, and a disc manager, which comprises a unit for sensing the type of an optical disc inserted into the disc drive, a unit for referring to the table in the second memory and deriving the type of a player corresponding to the sensed type of optical disc, as well as the type of data stored on the disk, and a unit for driving one of the various players stored in the first memory which is of the type derived by the deriving means and causing the player to play back the optical disc.

Information recording apparatus and method for playing a plurality of information recording mediums

A memory access control apparatus according to the present invention which controls an IC memory of which is under the control of a BIOS in the same manner as in a normal disk unit. External file units including the IC memory, a floppy disk unit, a hard disk unit, and the like are assigned a series of drive numbers. Registers store parameters for using the IC memory as an external file, and an access address and a transfer length of the IC memory are expressed in a sector form. The BIOS receives the access address and the parameters, translates the address into a byte form address, and transfers data to a corresponding area.

Memory access control apparatus

The data display-controlling device and method includes a control key used for reducing the speed at which data is displayed on a display unit. If the control key is depressed, this condition is detected by a central processing unit (CPU). Upon detection of the depression of the control key, the CPU reads current time from a timer, and determines whether a predetermined time has passed from the depression of the control key. If the predetermined time has not yet passed, the CPU executes the operating system program, and if the predetermined time has passed, data to be presented is supplied to the display unit.

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Hidaka, Japan

Koichi Awazu