公开(公告)号：CA2046706A1

公开(公告)日：1992-04-02

申请号：CA2046706

申请日：1991-07-10

Applicant: IBM

Inventor： KULAKOWSKI JOHN E ,  MEANS RODNEY J ,  STEPHENS GARY R

IPC: G11B7/00 ,  G11B7/0037 ,  G11B7/004 ,  G11B11/105 ,  G11B19/02 ,  G11B19/06

Abstract: TU9-90-037 CONTROLLING AN OPTICAL DISK DRIVE USING A MODE SET COMMAND In an optical disk drive, upon each power on or disk receipt, a mode control is set to non-operate, i.e., no commands can be received unless a mode setting command has been received. All other commands are rejected. When a mode set command is received after a power on or after each disk receipt, the mode control is set to operate which allows receipt and execution of legal commands. The mode setting requirement forces selection of write verify or not and to turn laser off or not after a predetermined time delay after completing a last command.