KR950020611A - Rotation control method and device of optical disc - Google Patents

Rotation control method and device of optical disc Download PDF

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Publication number
KR950020611A
KR950020611A KR1019930029059A KR930029059A KR950020611A KR 950020611 A KR950020611 A KR 950020611A KR 1019930029059 A KR1019930029059 A KR 1019930029059A KR 930029059 A KR930029059 A KR 930029059A KR 950020611 A KR950020611 A KR 950020611A
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KR
South Korea
Prior art keywords
mode
signal
phase
acceleration
state
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KR1019930029059A
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Korean (ko)
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KR0155750B1 (en
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심재성
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김광호
삼성전자 주식회사
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Priority to KR1019930029059A priority Critical patent/KR0155750B1/en
Publication of KR950020611A publication Critical patent/KR950020611A/en
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Publication of KR0155750B1 publication Critical patent/KR0155750B1/en

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02Control of operating function, e.g. switching from recording to reproducing

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  • Rotational Drive Of Disk (AREA)

Abstract

본 발명은 가속모드, 위상제어모드, 자동모드, 감속모드 및 정지모드 순으로 광디스크를 정지상태에서 회전시키고 다시 정지시키는 광디스크의 회전제어방법에 있어서, 상기 자동모드상태에서 이상회전상태인가 아닌가를 판단하는 단계; 상기 판단단계에서 이상회전상태라고 판단되면 현재 회전방향을 판단하는 단계; 판단된 회전방향이 정방향이면 감속모드를 수행하고 역방향이면 가속모드를 수행하는 단계; 및 상기 가감속모드후에 정지모드를 수행하고 다시 정상 회전제어시의 가속모드를 수행하는 단계를 구비하여 상기 자동모드상태에서 이상현상 발생시에 이를 검출해서 다시 정상상태로 자동복구할 수 있는 것을 특징으로 한다.In the rotation control method of an optical disk which rotates an optical disk in a stopped state and stops it again in the order of an acceleration mode, a phase control mode, an automatic mode, a deceleration mode and a stop mode, it is determined whether or not an abnormal rotation state is performed in the automatic mode state. Doing; Determining a current rotation direction when it is determined that the abnormal rotation state is at the determination step; Performing the deceleration mode when the determined rotation direction is the forward direction; and performing the acceleration mode when the determined rotation direction is the reverse direction; And performing a stop mode after the acceleration / deceleration mode, and then performing an acceleration mode during normal rotation control, so that when an abnormal phenomenon occurs in the automatic mode, it can automatically recover to a normal state again. do.

Description

광디스크의 회전제어방법 및 장치Rotation control method and device of optical disc

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

제3도는 본 발명에 의한 일실시예의 광디스크의 회전제어방법을 나타낸 흐름도.3 is a flowchart illustrating a rotation control method of an optical disk according to an embodiment of the present invention.

제4도는 본 발명에 의한 일실시예의 광디스크의 회전제어장치를 나타낸 블럭도.4 is a block diagram showing an apparatus for controlling rotation of an optical disk according to an embodiment of the present invention.

Claims (5)

가속모드, 위상제어모드, 자동모드, 감속모드 및 정지모드 순으로 광디스크를 정지상태에서 회전시키고 다시 정지시키는 광디스크의 회전제어방법에 있어서, 상기 자동모드상태에서 이상회전상태인가 아닌가를 판단하는 단계; 상기 판단단계에서 이상회전상태라고 판단되면 현재 회전방향을 판단하는 단계; 판단된 회전방향이 정방향이면 감속모드를 수행하고 역방향이면 가속모드를 수행하는 단계; 및 상기 가감속모드후에 정지모드를 수행하고 다시 정상 회전제어시의 가속모드를 수행하는 단계를 구비하여 상기 자동모드상태에서 이상현상 발생시에 이를 검출해서 다시 정상상태로 자동복구할 수 있는 것을 특징으로 하는 광디스크의 회전제어방법.A rotation control method of an optical disc for rotating an optical disc in a stopped state and stopping again in order of an acceleration mode, a phase control mode, an automatic mode, a deceleration mode, and a stop mode, the method comprising: determining whether an abnormal rotation state is in the automatic mode state; Determining a current rotation direction when it is determined that the abnormal rotation state is at the determination step; Performing the deceleration mode when the determined rotation direction is the forward direction; and performing the acceleration mode when the determined rotation direction is the reverse direction; And performing a stop mode after the acceleration / deceleration mode, and then performing an acceleration mode during normal rotation control, so that when an abnormal phenomenon occurs in the automatic mode, it can automatically recover to a normal state again. Rotation control method of the optical disk. 제1항에 있어서, 상기 이상회전상태의 판단단계는 위상언록킹기간을 체크해서 소정 기간 이상이면 재생된 EFM신호의 주기를 체크해서 이상회전상태의 발생을 판단하는 것을 특징으로 하는 광디스크의 회전제어방법.2. The rotation control of the optical disc according to claim 1, wherein the step of determining the abnormal rotation state determines the occurrence of the abnormal rotation state by checking the phase unlocking period and checking the period of the reproduced EFM signal when the phase unlocking period is longer than the predetermined period. Way. 제1항에 있어서, 상기 현재 회전 방향을 판단하는 단계는 위상제어모드의 가감속비를 체크해서 판단하는 것을 특징으로 하는 광디스크의 회전제어방법.The method of claim 1, wherein the determining of the current rotation direction is performed by checking acceleration / deceleration ratios of the phase control mode. 상기 판단결과에 따라 다음 n주기동안을 가속 또는 감속제어상태로 유지하는 과정을 구비하는 것을 특징으로 하는 광디스크의 회전제어방법.And maintaining the next n periods in the acceleration or deceleration control state according to the determination result. 제1위상비교신호를 입력하여 제1기준신호와 위상비교하여 얻은 위상비교신호와 속도비교신호를 입력하여 얻은 속도검출신호를 합해서 출력하는 위상록킹시 속도 및 위상제어부; 제2위상비교신호를 입력하여 제2기준신호와 위상비교하여 대략적인 위상비교신호를 발생하는 개략 위상제어부; 위상 록킹/언록킹상태에 응답하는 검출신호에 의해 상기 속도 및 위상제어부와 상기 개략 위상제어부의 출력을 선택하는 제1선택기; EFM신호를 입력해서 EFM신호의 펄스폭을 검출하고 검출된 펄스폭을 소정치 이상인지 이하인지를 판단해서 현상태가 가속상태이면 감속신호를 발생하고 감속상태이면 가속신호를 발생하는 이상 회전 제어부; 상기 검출신호를 입력하여 언록킹 검출기간을 체크해서 소정 시간이상인지 아닌지에 따라 선택신호를 발생하는 선택신호발생수단; 및 상기 선택신호에 응답하여 상기 제1선택기의 출력과 상기 이상회전 제어부의 출력을 선택하여 출력하는 제2선택기를 구비한 것을 특징으로 하는 광디스크의 회전제어장치.A speed and phase control unit for phase locking in which a phase comparison signal obtained by inputting a first phase comparison signal and a phase comparison signal and a speed detection signal obtained by inputting a speed comparison signal are added together and outputted; A schematic phase controller for inputting a second phase comparison signal to generate a phase comparison signal by comparing the phase with the second reference signal; A first selector for selecting outputs of the speed and phase controller and the coarse phase controller by detection signals in response to a phase locking / unlocking state; An abnormal rotation control unit which detects the pulse width of the EFM signal by inputting the EFM signal, and determines whether the detected pulse width is equal to or greater than a predetermined value, and generates a deceleration signal when the current state is accelerated and generates an acceleration signal when the decelerated state; Selection signal generating means for inputting the detection signal to check an unlocking detection period and to generate a selection signal depending on whether or not it is longer than a predetermined time; And a second selector configured to select and output an output of the first selector and an output of the abnormal rotation control unit in response to the selection signal. 제4항에 있어서, 상기 이상 회전 제어부는 상기 EFM신호의 펄스폭을 검출하고 이 검출결과에 따라 가감속 제어신호를 발생하는 이상회전검출기와 상기 가감속 제어신호의 비를 비교하여 가속 또는 감속신호를 발생하는 비교수단을 구비한 것을 특징으로 하는 광디스크의 회전제어장치.The acceleration / deceleration signal of claim 4, wherein the abnormal rotation control unit detects the pulse width of the EFM signal and compares the ratio between the abnormal rotation detector that generates the acceleration / deceleration control signal and the acceleration / deceleration control signal according to the detection result. Rotation control device for an optical disc, characterized in that it comprises a comparison means for generating a. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029059A 1993-12-22 1993-12-22 Apparatus and method of rotation controlling optical disc KR0155750B1 (en)

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Application Number Priority Date Filing Date Title
KR1019930029059A KR0155750B1 (en) 1993-12-22 1993-12-22 Apparatus and method of rotation controlling optical disc

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Application Number Priority Date Filing Date Title
KR1019930029059A KR0155750B1 (en) 1993-12-22 1993-12-22 Apparatus and method of rotation controlling optical disc

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KR950020611A true KR950020611A (en) 1995-07-24
KR0155750B1 KR0155750B1 (en) 1998-12-15

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