KR920008006Y1 - Disk size distinguishing device of disk player - Google Patents

Disk size distinguishing device of disk player Download PDF

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Publication number
KR920008006Y1
KR920008006Y1 KR2019900017643U KR900017643U KR920008006Y1 KR 920008006 Y1 KR920008006 Y1 KR 920008006Y1 KR 2019900017643 U KR2019900017643 U KR 2019900017643U KR 900017643 U KR900017643 U KR 900017643U KR 920008006 Y1 KR920008006 Y1 KR 920008006Y1
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KR
South Korea
Prior art keywords
light
disk
prism
size
sensing means
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KR2019900017643U
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Korean (ko)
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KR920010183U (en
Inventor
김천경
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주식회사 금성사
이헌조
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Priority to KR2019900017643U priority Critical patent/KR920008006Y1/en
Publication of KR920010183U publication Critical patent/KR920010183U/en
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    • 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
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B19/124—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of diameter of disks
    • 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
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1359—Single prisms

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음.No content.

Description

멀티 디스크 플레이어의 디스크 사이즈 식별 장치Disc size identification device of multi disc player

제1도는 본 고안의 요부 단면도.1 is a cross-sectional view of the main part of the present invention.

제2도는 본 고안에 따른 프리즘의 동작 설명을 위한 요부 확대도.Figure 2 is an enlarged view of the main part for explaining the operation of the prism according to the present invention.

제3도는 종래 디스크 사이즈 식별 장치의 단면도.3 is a cross-sectional view of a conventional disc size identification device.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 광원 2,…,5,7,…,10 : 광투과구멍1: light source 2,... , 5,7,… , 10: light transmission hole

6 : 방진용 고무판 11 : 턴테이블6: dustproof rubber plate 11: turntable

16 : 일체형 프리즘 17,…,20 : 광감지수단16: integral prism 17,... , 20: light sensing means

본 고안은 사이즈가 각각 상이한 다수개의 디스크를 재생하는 멀티 디스크 플레이어의 디스크 사이즈 식별 장치에 관한 것으로 특히, 디스크 사이즈 검출을 위한 프리즘을 일체형으로 구성하여 디스크 사이즈를 식별하는데 적합하도록 한 멀티 디스크 플레이어의 디스크 사이즈 식별 장치에 관한 것이다.The present invention relates to a disc size identification device of a multi-disc player that plays back a plurality of discs of different sizes, and in particular, a disc of a multi-disc player adapted to identify a disc size by integrally configuring a prism for detecting a disc size. It relates to a size identification device.

종래의 디스크 사이즈 식별장치는 제3도에서와 같이 빛을 조사하기 위한 광원(31)과, 디스크 사이즈에 대응된 위치에 제1 내지 제4광투과구멍(32,33,34,35)이 형성된 턴테이블(36)고, 상기 광투과구멍(32,33,34,35)을 통과하는 빛을 각각 반사하는 제1내지 제4프리즘(37,38,39,40)과, 반사되어 입력된 빛을 감지하는 제1 내지 제4광감지기(41,42,43,44)와, 광감지기(41,42,43,44)가 조립된 회로기판(45)과 방진용 고무판(46)과, 턴테이블 축(47)으로 구성하는 것으로 그 동작을 설명하면 다음과 같다.In the conventional disc size discriminating apparatus, as shown in FIG. 3, a light source 31 for irradiating light and first to fourth light transmitting holes 32, 33, 34, and 35 are formed at a position corresponding to the disc size. A first to fourth prism (37, 38, 39, 40) reflecting light passing through the light transmission holes (32, 33, 34, 35), and the reflected light First to fourth light detectors 41, 42, 43, 44 to sense, a circuit board 45 on which the light detectors 41, 42, 43, 44 are assembled, an anti-vibration rubber plate 46, a turntable shaft It is configured as (47) and the operation is described as follows.

즉, 광원(31)으로 부터 프리즘(37,38,39,40)에 입사된 빛이 반사되어 광투과구멍(32,33,34,35)을 통하여 광감지기(41,42,43,44)에 입력되는 빛의 검출 여부에 따라 방지용 고무판(46)위에 안착되는 디스크의 사이즈를 식별한다.That is, light incident on the prisms 37, 38, 39, and 40 is reflected from the light source 31, and the light detectors 41, 42, 43, and 44 are transmitted through the light transmission holes 32, 33, 34, and 35. The size of the disk seated on the prevention rubber plate 46 is identified according to whether the light input to the front panel is detected.

예를들어 지름 8cm의 콤팩트 디스크의 경우에는 모든 광감지기(41,…,44)로 빛이 검출되고 지름 30cm의 레이저 디스크의 경우에는 제2 내지 제4광투과구멍(33,34,35)이 차단되기 때문에 제1과감지기(41)에서만 빛이 검출되어 디스크 사이즈를 식별한다.For example, in the case of a compact disk having a diameter of 8 cm, light is detected by all the light detectors 41,..., 44, and in the case of a laser disk having a diameter of 30 cm, the second through fourth light transmitting holes 33, 34, and 35 are closed. Since it is blocked, light is detected only in the first overdetector 41 to identify the disc size.

상기 디스크 사이즈의 식별한 결과에 의하여 픽업의 위치가 조정된다.The position of the pickup is adjusted according to the identified result of the disc size.

그런, 이와같은 종래의 디스크 사이즈 식별장치는 광원(31) 이외의 빛에 의한 오동작이 발생되어 기기의 신뢰도가 저하되고, 광투과구멍(32,33,34,35)의 크기가 작아야 되기 때문에 그 가공이 어려워서 작업성이 저하되며 프리즘(37,38,39,40)이 별개의 부품으로 각각 설치되는데 따른 작업 능률의 저하가 초래되는 문제점이 있었다.In such a conventional disc size discriminating device, malfunctions are caused by light other than the light source 31, and the reliability of the device is lowered, and the size of the light transmission holes 32, 33, 34, 35 must be small. There is a problem in that workability is reduced and workability is deteriorated, and work efficiency is lowered as prisms 37, 38, 39, and 40 are installed as separate parts, respectively.

본 고안은 이와같은 종래의 문제점을 해결하기 위하여 일체형 프리즘에 의한 광반사가 행하여 지도록 하고 광투과 구멍의 크기를 확대하여 기기 조립을 용이하게 행할 수 있도록 하고 외부의 빛에 의한 오동작 발생을 방지할 수 있도록 한 멀티 디스크 플레이어의 디스크 사이즈 식별장치를 제공하는데 그 목적이 있는 것으로, 첨부된 도면에 의하여 본 고안의 구성 및 작용효과를 상세히 설명하면 다음과 같다.In order to solve such a conventional problem, the present invention allows light reflection by an integral prism to be performed, and enlarges the size of the light transmission hole so that the assembly of the device can be easily performed and the occurrence of malfunction by external light can be prevented. It is an object of the present invention to provide a disc size identification device of a multi-disc player, and the configuration and effect of the present invention will be described in detail with reference to the accompanying drawings.

먼저 본 고안의 구성은 제1도에서와 같이 빛을 조사하기 위한 광원(1)과, 디스크 사이즈에 대응된 위치에 제1 내지 제4광투과구멍(2,3,4,5)이 형성된 방진용 고무판(6)과, 상기 광투과구멍(2,3,4,5)과 일치된 위치에 제5 내지 8광투과구멍(7,8,9,10)이 형성된 턴테이블(11)과, 상기 광투과구멍(2,…,5,7,…,10)을 통과한 빛이 각각 입사 및 반사되는 제1내지 제4입사면(12,13,14,15) 및 제1 내지 제4반사면(12',13',14',15')이 일체로 형성된 일체형 프리즘(16)과 상기 제1 내지 제4반사면(12',13',14',15')에서 반사된 빛을 각각 감지하는 제1내지 제4 감지수단(17,18,19,20)과, 상기 일체형 프리즘(16) 및 광감지수단(17,18,19,20)이 고정되는 기판(21)으로 구성한 것이다.First, the constitution of the present invention is as shown in FIG. A rubber table 6, a turntable 11 having fifth to eighth light transmitting holes 7, 8, 9, and 10 formed at a position coinciding with the light transmitting holes 2, 3, 4, and 5; First to fourth incident surfaces 12, 13, 14 and 15 and first to fourth reflective surfaces through which light passing through the light transmitting holes 2, ..., 5, 7, ..., 10 are incident and reflected, respectively The light reflected from the integrated prism 16 and the first to fourth reflective surfaces 12 ', 13', 14 ', and 15' are formed integrally with (12 ', 13', 14 ', and 15'), respectively. The first to fourth sensing means (17, 18, 19, 20) for sensing, and the integrated prism 16 and the light sensing means (17, 18, 19, 20) is a substrate 21 is fixed.

도면중 미설명부호 22는 턴데이블 축, 23,24,25,26은 디스크, A0는 광원(1)으로 부터의 입사각, A1은 프리즘의 입사각, A2는 프리즘의 반사각, A3는 프리즘의 반사면과 수평면이 이루는 각도이다.In the drawings, reference numeral 22 denotes a turntable axis, 23, 24, 25, and 26 are disks, A 0 is an angle of incidence from the light source 1, A 1 is an angle of incidence of the prism, A 2 is a angle of reflection of the prism, and A 3 is It is the angle between the reflecting surface of the prism and the horizontal surface.

이와같이 구성된 본 고안의 작용효과는 제1도에서와 같이 광원(1)으로 부터 조사되는 빛은 광투과구멍(2,3,4,5,7,8,9,10)을 통과하여 각각 일체형 프리즘(16)의 제1 내지 제4입사면(12,13,14,15)에 입사되고, 이어서 제1 내지 제4반사면(12',13',14',15')에서 반사된 빛이 각각 제1 내지 제4감지수단(17,18,19,20)에 의하여 감지된다.The working effect of the present invention configured as described above is that the light irradiated from the light source 1 passes through the light transmission holes 2, 3, 4, 5, 7, 8, 9 and 10, as shown in FIG. Light incident on the first to fourth incident surfaces 12, 13, 14 and 15 of (16), and then reflected on the first to fourth reflective surfaces 12 ', 13', 14 'and 15' The first to fourth sensing means 17, 18, 19 and 20 are respectively sensed.

여기서 일체형 프리즘(16)의 동작을 보다 더 상세히 설명하면 제2도에서와 같이 광원(1)으로부터 소정의 입사각(A0)으로 제1입사면(12)에 입사되어 투과된 빛은 제1반사면(12')에 소정의 입사각(A1)으로 입사되어 수정의 반사각(A2)으로 전반사된 빛이 제1광감지수단(17)에 입력된다.Herein, the operation of the integrated prism 16 will be described in more detail. As shown in FIG. 2, the light transmitted through the first incident surface 12 at the predetermined incident angle A 0 from the light source 1 is transmitted through the first half. Light incident on the slope 12 ′ at a predetermined incident angle A 1 and totally reflected at the crystal reflection angle A 2 is input to the first light detecting means 17.

제2 내지 제4입사면(13,14,15) 및 반사면(13',14',15')과 제2 내지 제4광감지수단(18,19,20)의 동작 관계 또한 상기한 바와 같다.The operation relationship between the second to fourth incidence surfaces 13, 14 and 15 and the reflective surfaces 13 ', 14' and 15 'and the second to fourth light sensing means 18, 19 and 20 are also described above. same.

제1도에서 8cm 콤팩트 디스크(26)가 방진용 고무판(6)위에 안착된 경우에는 모든 광투과구멍(2,3,4,5,7,8,9,10)으로 빛이 통과되므로 모든 광감지수단(17,18,19,20)에 의하여 빛이 감지되어 디스크 사이즈가 식별된다.In FIG. 1, when the 8 cm compact disk 26 is seated on the anti-vibration rubber plate 6, light passes through all the light transmission holes 2, 3, 4, 5, 7, 8, 9, and 10, so that all the light Light is sensed by the sensing means 17, 18, 19, 20 to identify the disc size.

다른 예로 30cm 레이저 디스크(23)가 방진용 고무판(6)에 안착된 경우에는 제2,3,4, 광투과구멍(3,4,5)이 디스크(23)에 의하여 차단되므로 광원(1)으로 부터 조사되는 빛은 제1광투과구멍(2)과 제5광투과구멍(7)을 통하여 제1광감지수단(17)에 의하여 감지되므로 디스크 사이즈가 식별된다.As another example, when the 30 cm laser disk 23 is seated on the anti-vibration rubber plate 6, the second, third and fourth light transmitting holes 3, 4 and 5 are blocked by the disk 23, so that the light source 1 Since the light irradiated from is detected by the first light detecting means 17 through the first light transmitting hole 2 and the fifth light transmitting hole 7, the disk size is identified.

이상에서 설명한 바와같이 본 고안에 의하면 프리즘이 일체형이므로 프리즘 설치에 따른 작업의 편리를 기할 수 있고 프린드 기판에 프리즘과 광감지수단이 설치되어 견고함을 유지할 수 있으며 광투과구멍의 확장이 가능하여 그 작업성의 향상을 도모할 수 있고 외부의 및에 의한 오동작을 줄여서 기기의 신뢰도를 향상시킬 수 있는 효과가 있다.As described above, according to the present invention, since the prism is integrated, it is possible to facilitate the operation according to the installation of the prism, and the prism and the light sensing means are installed on the printed board to maintain the robustness, and the light transmission hole can be expanded. The workability can be improved and the malfunction of external and external devices can be reduced to improve the reliability of the device.

Claims (1)

디스크 사이즈에 대응된 위치에 다수개의 광투과구멍(2,3,4,5)이 형성된 방지용 고무판(6)과, 상기 광투과구멍(2,3,4,5)과 일치된 위치에 다수개의 광투과구멍(7,8,9,10)이 형성된 턴테이블(11)과, 상기 광투과구멍(2,3,4,5,7,8,9,10)을 통과한 빛이 광감지수단에 전달되도록 각각 입사 및 반사되는 다수개의 입사면(12,13,14,15) 및 반사면(12',13',14',15')이 일체로 형성된 일체형 프리즘(16)과 상기 반사면(12',13',14',15')에서 반사된 빛을 각각 감지하는 광감지수단17,18,19,20)으로 구성한 것을 특징으로 하는 멀티디스크 플레이어의 디스크 사이즈 식별 장치.A plurality of prevention rubber plates 6 having a plurality of light transmission holes 2, 3, 4, 5 formed at positions corresponding to the disc size, Light passing through the turntable 11 having the light transmission holes 7, 8, 9, 10, and the light transmission holes 2, 3, 4, 5, 7, 8, 9, 10 is provided to the light sensing means. The integral prism 16 and the reflective surface in which a plurality of incident surfaces 12, 13, 14, 15 and reflective surfaces 12 ', 13', 14 ', and 15' are respectively integrally formed so as to be transmitted. 12 ', 13', 14 ', and 15'), comprising: optical sensing means 17, 18, 19, and 20 for sensing the light reflected by the disk.
KR2019900017643U 1990-11-16 1990-11-16 Disk size distinguishing device of disk player KR920008006Y1 (en)

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KR2019900017643U KR920008006Y1 (en) 1990-11-16 1990-11-16 Disk size distinguishing device of disk player

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Application Number Priority Date Filing Date Title
KR2019900017643U KR920008006Y1 (en) 1990-11-16 1990-11-16 Disk size distinguishing device of disk player

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KR920010183U KR920010183U (en) 1992-06-17
KR920008006Y1 true KR920008006Y1 (en) 1992-10-22

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