KR950020492A

KR950020492A - Seeking and Lead / Write Methods for 3.5 "Optical Disc Drives

Info

Publication number: KR950020492A
Application number: KR1019930030573A
Authority: KR
Inventors: 이시현
Original assignee: 김주용; 현대전자산업 주식회사
Priority date: 1993-12-29
Filing date: 1993-12-29
Publication date: 1995-07-24

Abstract

본 발명은 3.5˝광 디스크 드라이브의 시크 및 리드/라이트 방법에 관한 것으로, 광 디스크 드라이브에서 디스크상의 데이타를 기록/재생하기 위해서 광 헤드를 목표 트랙으로 시크하고 데이타를 리드/라이트하는 기능을 구현한 방법에 관한 것이다.The present invention relates to a seek and read / write method of a 3.5 ˝ optical disk drive, which implements a function of seeking and reading / reading an optical head to a target track in order to record / reproduce data on a disk in the optical disk drive. It is about a method.

기존의 광 디스크 드라이브에서 사용된 시크 및 리드/라이트방식은 다른 형태의 광 디스크 드라이브에 적용할 경우 호환성이 없고, 소형 컴퓨터 시스템 인터페이스버스를 이용하는 디스크드라이브 시스템에서 사용할 수 없는 문제점이 있었다.The seek and read / write methods used in the conventional optical disk drives are incompatible when applied to other types of optical disk drives, and there is a problem in that they cannot be used in a disk drive system using a small computer system interface bus.

본 발명은 이런 문제점을 감안하여 소형 컴퓨터 시스템 인터페이스 표준안에 따른 커맨드 형태를 사용하여 광 디스크 드라이브에서 디스크상의 데이타를 기록 및 재생하기 위해 디스크상의 목표 트랙을 시크하고 시크된 목표 트랙을 리드/라이트 하는 것을 특징으로 한다.In view of this problem, the present invention seeks to seek the target track on the disc and read / write the seek target track to record and play data on the disc in the optical disc drive using the command form according to the small computer system interface standard. It features.

즉, 표준안에 따라 설계하였기 때문에 다른 형태의 광 디스크 드라이브와 호환성을 유지할 수 있으며 다른 드라이브의 시스템에 적용할 경우 필요한 파라메타만 수정하여 사용할 수 있다.That is, because it is designed according to the standard, it can maintain compatibility with other types of optical disk drives, and it can modify and use only necessary parameters when applied to the system of other drives.

Description

Seeking, Leading, and Writing 3.5-inch Optical Disk Drives

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 3.5˝광 디스크 드라이브의 시크 및 리드/라이트 커맨드 구조도.1 is a seek and read / write command structure diagram of a 3.5˝ optical disk drive.

제2도는 3.5˝광 디스크 드라이브의 시크 및 리드/라이트 순서도이다.2 is a seek and read / write flow chart of a 3.5 GHz optical disk drive.

Claims

Seeking for reading / writing data on the disc in the optical disc drive, seeks the optical head to the target track on the disc and reads / writes the seeked target track in such a manner as to use the command form according to the compact computer system interface standard. Seek and read / write method of a 3.5˝ optical disk drive.

The method of claim 1, wherein the seek and read / write method using a command form according to the small computer system interface standard comprises: a first step (S1) of initializing a drive system; A second step S2 of inquiring whether or not there is a command input; A third step S3 of analyzing a group code and an operation code from a command description block (hereinafter referred to as CDB); Setting a read / write parameter, putting a bias coil into a read mode, checking a spindle motor, and checking whether a disk exists in the drive (S4); A fifth step (S5) of continuing to repeat if the header does not satisfy the condition by asking whether the header seeks to the target track and sector; A sixth step (S6) of reading / writing data to a confirmation disc on a target track / sector if the condition of the fifth step (S5) is satisfied; A seventh step (S7) of continuing to perform if not completed by asking whether all of the reads / writes are completed; An eighth step (S8) of setting a device disconnection and a small computer system interface bus mode and performing a micro-jump operation when the condition of the seventh step (S7) is satisfied; And a ninth step (S9) for executing the fifth step (S5) by waiting for the next command when all operations are completed.

※ Note: The disclosure is based on the initial application.