KR930004042Y1 - Pick position detect apparatus - Google Patents
Pick position detect apparatus Download PDFInfo
- Publication number
- KR930004042Y1 KR930004042Y1 KR2019910012625U KR910012625U KR930004042Y1 KR 930004042 Y1 KR930004042 Y1 KR 930004042Y1 KR 2019910012625 U KR2019910012625 U KR 2019910012625U KR 910012625 U KR910012625 U KR 910012625U KR 930004042 Y1 KR930004042 Y1 KR 930004042Y1
- Authority
- KR
- South Korea
- Prior art keywords
- pickup
- pinion
- module base
- pickup module
- optical sensor
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, 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
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/26—Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
- G11B19/275—Gear wheel drive
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/13—Optical detectors therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2545—CDs
Abstract
내용 없음.No content.
Description
제1도는 종래의 콤팩트 디스크 플레이어의 픽업위치 검출장치를 보인 평면도.1 is a plan view showing a pickup position detecting device of a conventional compact disc player.
제2도는 본 고안의 픽업위치 검출장치의 사시도.2 is a perspective view of a pickup position detecting device of the present invention.
제3도는 본 고안의 픽업위치 검출장치의 취부상태를 보인 정면도.3 is a front view showing the mounting state of the pickup position detecting apparatus of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
5 : 픽업모듈 베이스 7 : 픽업5: Pickup Module Base 7: Pickup
8 : 광센서 10 : 피니언8 light sensor 10 pinion
11 : 분할판 12 : 랙크11: divider 12: rack
본 고안은 콤팩트 디스크 플레이어(Compact Disk player)의 픽업위치 검출장치에 관한 것으로, 특히 콤팩트 디스크 플레이어에서 픽업 이송기구에 LDM을 사용할 때 로타리 엔코더(Rotary Encorder)를 이용하여 픽업(pick-up)위치와 속도를 검출하므로서 보다 빠른 시간내에 픽업위치를 검출할 수 있도록 한 것이다.The present invention relates to a pickup position detecting device of a compact disk player, and particularly, when using LDM as a pickup transport mechanism in a compact disk player, a rotary encoder (Rotary Encorder) By detecting the speed, the pickup position can be detected within a faster time.
종래의 픽업위치 검출장치는 제1도에 도시된 바와같이 상부양측으로 구동코일(1)이 감긴 구동보빈(Bobbin)(2)과 센싱코일(Sensingcoil)(3)이 감긴 센싱보빈(4)이 각각 설치된 픽업모듈베이스(pick-up Module Base)(5)를 구비하고 이 픽업모듈 베이스(5) 중앙 상부에 가이드로드(Guide Rod)(6)가 픽업(7)을 관통하여 구성된 것으로 구동코일(1)의 전자기력에 의하여 픽업모듈 베이스(5)가 이송되어지면, 센싱코일(3)이 자장속을 이동하게 되어 역기전력을 발생하게 되는데 이것을 감지하여 픽업모듈 베이스(5)의 이동속도를 알수있게 된다.In the conventional pickup position detecting apparatus, as shown in FIG. 1, a driving bobbin 2 wound around a driving coil 1 and a sensing bobbin 4 wound around a sensing coil 3 are wound on upper sides thereof. Each of which has a pickup module base 5 installed therein, and a guide rod 6 penetrates the pickup 7 at the center of the pickup module base 5. When the pickup module base 5 is transported by the electromagnetic force of 1), the sensing coil 3 moves the magnetic flux to generate counter electromotive force, which detects the movement speed of the pickup module base 5. .
그러나 이와같은 종래의 위치검출 장치에서 센싱코일(3)로는 픽업모듈 베이스(5)의 이동속도만을 감지하므로 정확한 위치 결정을 위하여 가이드로드(6)가 관통된 픽업(7)을 이송시키면서 콤팩트 디스크의 트랙수를 직접 카운트하여 위치를 결정하므로 이동속도를 빠르게 하는데는 한계가 있다.However, in the conventional position detection device, since the sensing coil 3 senses only the moving speed of the pickup module base 5, the guide rod 6 transfers the pickup 7 through which the guide rod 6 passes for accurate positioning. Since the number of tracks is directly counted to determine the position, there is a limit to increasing the moving speed.
따라서 액세스 타임이 늦어지고 또한 트랙수의 카운트를 마이컴이 처리하므로 마이컴의 처리업무가 많아지는 문제점이 있었다.As a result, the access time is delayed and the microcomputer processes the count of tracks, which causes a problem of increasing the microcomputing task.
본 고안은 이와같은 문제점을 해결하기 위하여 픽업모듈 베이스의 이동속도에 따른 정확한 위치를 결정하기 위하여 광센서에 의해 검출되는 펄스에 따라 현재의 픽업위치를 정확히 알수있도록 하므로서 액세스 타임의 향상과 마이컴의 프로그램 처리부담을 경감시킬수 있도록 한 픽업 위치 검출장치를 제공하는데 목적이 있는 것으로 첨부된 도면에 의하여 본 고안의 구성을 설명하면 다음과 같다.In order to solve this problem, the present pickup position can be accurately known according to the pulse detected by the optical sensor in order to determine the exact position according to the movement speed of the pickup module base. The purpose of the present invention is to provide a pickup position detecting apparatus capable of reducing the processing burden.
본 고안 픽업위치 검출장치는 제2도 내지 제3도에 도시된 바와 같이 픽업묘듈 베이스(5)의 상부일측에 구동코일(1)이 감긴 구동보빈(2)이 설치되어 있고 다른일측에는 광센서(8)가 부착된 광센서 고정대(9)가 설치되어 있으며 광센서(8)의 하부에는 회전가능하게 축지되며 피니언(10)과 결합한 흑백명암부의 분할판(11)이 각각 설치된 픽업모듈 베이스(5)를 구비하였다.In the pickup position detecting device of the present invention, as shown in FIGS. 2 to 3, a driving bobbin 2 in which a driving coil 1 is wound is provided on an upper side of the pickup module base 5, and an optical sensor is provided on the other side. Pick-up module base (8) is attached to the optical sensor holder (9) is installed in the lower part of the optical sensor (8) rotatably rotatable and the partition plate (11) of the black and white contrast section combined with the pinion (10) 5) was provided.
또한 픽업모듈 베이스(5) 중앙상부에 가이드로드(6)가 픽업(7)을 관통한 것으로 피니언(10)은 고정되어 있는 랙크(12)와 접촉하여 구동되도록 구성된 것이다.In addition, the guide rod 6 penetrates the pickup 7 in the center of the pickup module base 5, and the pinion 10 is configured to be driven in contact with the fixed rack 12.
이와같이 구성된 본 고안의 작용효과는 제2도와 제3도에 도시된 바와같이 구동코일(1)에 전류가 공급되면 픽업모듈 베이스(5)가 전후진 구동되는데 이때 피니언(10)이 고정되어 있는 랙크(12)와 맞물려 있기 때문에 픽업모듈 베이스(5)가 이동을 하게되면 피니언(10)이 회전구동된다.As shown in FIG. 2 and FIG. 3, the pick-up module base 5 is driven forward and backward when the current is supplied to the driving coil 1. The rack of which the pinion 10 is fixed is provided. Since it is engaged with the (12), when the pickup module base 5 is moved, the pinion 10 is rotated.
피니언(10)과 결합되어 있는 분할판(11)이 회전을 할때 광센서 고정대(9)에 부착되어 있는 광센서(8)가 회전하는 분할판(11)의 흑백 명암부분을 감지하므로서 분할판(11)의 회전속도와 회전수에 따라 상이한 폭 및 주기의 광 감지펄스가 검출되어 현재의 픽업(7) 위치를 알수 있고 픽업모듈 베이스(5)가 이동하는 속도를 감지할 수 있다.When the partition plate 11 coupled to the pinion 10 rotates, the light sensor 8 attached to the optical sensor holder 9 detects the black and white contrast portion of the partition plate 11 that rotates, thereby separating the plate. According to the rotation speed and the rotation speed of (11), light sensing pulses of different widths and periods are detected to know the current pickup 7 position and to sense the speed at which the pickup module base 5 moves.
이상에서 설명한 바와같이 본 고안에 의하면 픽업위치 검출장치의 구성을 센싱코일이 감긴 센싱 보빈 대신 팩크와 피니언 광센서로 대치하므로 원가를 절감할 수 있으며 픽업의 위치와 픽업모듈 베이스가 이동하는 속도를 정확히 감지할 수 있는 효과가 있다.As described above, according to the present invention, the structure of the pickup position detection device is replaced by the packing coil and the pinion optical sensor instead of the sensing coil in which the sensing coil is wound, thereby reducing the cost and accurately positioning the pickup position and the speed at which the pickup module base moves. There is a detectable effect.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910012625U KR930004042Y1 (en) | 1991-08-08 | 1991-08-08 | Pick position detect apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910012625U KR930004042Y1 (en) | 1991-08-08 | 1991-08-08 | Pick position detect apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930005506U KR930005506U (en) | 1993-03-22 |
| KR930004042Y1 true KR930004042Y1 (en) | 1993-06-25 |
Family
ID=19317683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910012625U KR930004042Y1 (en) | 1991-08-08 | 1991-08-08 | Pick position detect apparatus |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930004042Y1 (en) |
-
1991
- 1991-08-08 KR KR2019910012625U patent/KR930004042Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930005506U (en) | 1993-03-22 |
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