Hitachi, Ltd.

Renesas Technology Corp.

Hitachi Ulsi Systems Co., Ltd.

Mitsuo Hagiwara

Hiromasa Takahashi

Nobuo Shibasaki

Satoshi Yamato

Tsutomu Ishii

Mitsuo Yotsutani

A microcomputer which is an integrated circuit including an electrically erasable and programmable nonvolatile semiconductor memory and a central processing unit is used for control of a disk drive. The nonvolatile semiconductor memory holds an application program such as a recorded information reproducing control program in an application program area, and holds a reboot program used for updating the application program in a reboot program area. The central processing unit executes the reboot program to rewrite the application program in whole or part, in response to a rewrite command for the application program which is supplied from the outside.

Disk drive and computer

A microcomputer ( ) which is an integrated circuit including an electrically erasable and programmable nonvolatile semiconductor memory ( ) and a central processing unit ( ) is used for control of a disk drive ( ). The nonvolatile semiconductor memory holds an application program such as a recorded information reproducing control program in an application program area ( ), and holds a reboot program used for updating the application program in a reboot program area ( ). The central processing unit executes the reboot program to rewrite the application program in whole or part, in response to a rewrite command for the application program which is supplied from the outside.

Disk drive computer with programmable nonvolatile memory capable of rewriting a control program of the disk drive

Growing community of inventors

Tamamura-machi, Japan

Mitsuo Hagiwara