KR970012526A - Over-Run Prevention Device of Spindle Motor of Disc Player - Google Patents
Over-Run Prevention Device of Spindle Motor of Disc Player Download PDFInfo
- Publication number
- KR970012526A KR970012526A KR1019950026312A KR19950026312A KR970012526A KR 970012526 A KR970012526 A KR 970012526A KR 1019950026312 A KR1019950026312 A KR 1019950026312A KR 19950026312 A KR19950026312 A KR 19950026312A KR 970012526 A KR970012526 A KR 970012526A
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- pulse
- pulse signal
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- abnormal
- switching
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Abstract
본 발명은 디스크재생기기의 스핀들모터 오버-런 방지장치에 관한 것으로, DSP(6)에서 디지털신호 처리되는 디스크로부터의 기록정보에 대한 동기펄스신호가 LPF(8)를 통해 저역통과 필터링되어 모터구동부(12)에 공급되에 의해 스핀들머터(14)가 기록정보의 독취상태와 동기적으로 정속회전되도록 하는 디스크재생기기에 있어서; 상기 동기펄스신호를 기준전압(V1, V2)과 비교한 결과로 그 동기펄스신호의이상발생에 따른 지속적인 제1이상펄스기간(a)과 제2이상펄스기간(b)을 검출하는 비교수단(22,24)과, 상기 비교수단(22,24)으로부터의 동기펄스신호의 제1이상 펄스기간(a)을 검출한 검출펄스신호와 제2이상펄스기간(b)을 검출한 검출펄스신호를 입력받아 논리합처리하는 논리합처리수단(26), 상기 논리합 처리결과에 따른 펄스신호를 입력받아 상기 제1 및 제2이상펄스기간(a,b)에 대응하여 스위칭제어신호를 발생하는 펄스발생수단(28,34) 및, 상기 펄스발생수단(28,34)으로부터의 스위칭제어신호에 의해 스위칭제어되어 정상적인 동기펄스신호에 대응하는 기준펄스신호(Vref)가 상기 LPF(8)에 인가되도록 스위칭절환되는 스위칭절환수단(40)을 구비하여 구성된 것을 특징으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle motor over-run prevention apparatus of a disc reproducing apparatus, wherein a synchronous pulse signal for recording information from a disc processed by a digital signal in a DSP (6) is low-pass filtered through an LPF (8) to drive a motor. A disc reproducing apparatus which is supplied to (12) so that the spindle mutter 14 rotates at a constant speed in synchronism with the read state of the recording information; Comparison means for detecting the continuous first abnormal pulse period (a) and the second abnormal pulse period (b) according to the occurrence of an abnormality of the synchronization pulse signal as a result of comparing the synchronization pulse signal with the reference voltages V1 and V2 ( 22 and 24, and a detection pulse signal detecting the first abnormal pulse period a of the synchronous pulse signal from the comparing means 22 and 24 and a detection pulse signal detecting the second abnormal pulse period b. A logic sum processing means 26 for receiving an OR and processing the pulse sum means 26 for receiving a pulse signal according to the OR result and generating a switching control signal corresponding to the first and second abnormal pulse periods a and b; 28 and 34, and are switched by a switching control signal from the pulse generating means 28 and 34 so as to be switched so that a reference pulse signal Vref corresponding to a normal synchronous pulse signal is applied to the LPF 8. It is characterized by comprising a switching switching means 40.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 본 발명에 따른 디스크재생기기의 스핀들모터 오버-런 방지장치를 나타낸 회로구성도.3 is a circuit diagram showing a spindle motor over-run prevention apparatus of a disc reproducing apparatus according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950026312A KR100193168B1 (en) | 1995-08-24 | 1995-08-24 | Spindle motor over-run prevention device of disc player |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950026312A KR100193168B1 (en) | 1995-08-24 | 1995-08-24 | Spindle motor over-run prevention device of disc player |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970012526A true KR970012526A (en) | 1997-03-29 |
KR100193168B1 KR100193168B1 (en) | 1999-06-15 |
Family
ID=66595980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950026312A KR100193168B1 (en) | 1995-08-24 | 1995-08-24 | Spindle motor over-run prevention device of disc player |
Country Status (1)
Country | Link |
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KR (1) | KR100193168B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100494313B1 (en) * | 1997-06-10 | 2005-08-17 | 디지털 비디오 시스템스 인코퍼레이션 | Offset remover |
-
1995
- 1995-08-24 KR KR1019950026312A patent/KR100193168B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100494313B1 (en) * | 1997-06-10 | 2005-08-17 | 디지털 비디오 시스템스 인코퍼레이션 | Offset remover |
Also Published As
Publication number | Publication date |
---|---|
KR100193168B1 (en) | 1999-06-15 |
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