KR960030124A - Optical recording medium and diffraction grating using the diffraction grating - Google Patents

Optical recording medium and diffraction grating using the diffraction grating Download PDF

Info

Publication number
KR960030124A
KR960030124A KR1019950000367A KR19950000367A KR960030124A KR 960030124 A KR960030124 A KR 960030124A KR 1019950000367 A KR1019950000367 A KR 1019950000367A KR 19950000367 A KR19950000367 A KR 19950000367A KR 960030124 A KR960030124 A KR 960030124A
Authority
KR
South Korea
Prior art keywords
block
diffraction grating
light
recording medium
optical recording
Prior art date
Application number
KR1019950000367A
Other languages
Korean (ko)
Other versions
KR0144193B1 (en
Inventor
정성갑
Original Assignee
구자홍
Lg 전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019950000367A priority Critical patent/KR0144193B1/en
Publication of KR960030124A publication Critical patent/KR960030124A/en
Application granted granted Critical
Publication of KR0144193B1 publication Critical patent/KR0144193B1/en

Links

Classifications

    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings

Abstract

본 발명은 광 기록 매체 및 기록 재생장치에 관한 것으로, 특히 디스크에 회절격자를 형성시켜 회절격자에 의해서 회절되는 회절광의 분포로부터 정보를 축출하도록 한 회절격자를 이용한 광 기록 매체 및 이의 재생 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording medium and a recording / reproducing apparatus, and more particularly, to an optical recording medium using a diffraction grating and a reproduction apparatus thereof, wherein a diffraction grating is formed on a disc to extract information from the distribution of diffracted light diffracted by the diffraction grating. will be.

이와 같은 본 발명의 회절격자를 이용한 광 기록 매체는 트랙상에 트랙의 진행방향과 직각되게 회절격자의 형태로 투과막과 차단막을 교대로 형성하여 소정 갯수와 동일 규격의 차단막과 투과막을 단위 블럭으로 하고, 각 단위 블럭의 투과막과차단막의 길이를 각 데이타에 상응하도록 다르게 하여 데이타를 기록하고, 본 발명의 회절격자를 이용한 광 기록 매체의재생장치는 회절격자를 이용하여 각 블럭 단위로 각각 다른 각도로 회절된 광이 출력되도록 기록된 광 기록 매체와, 상기광 기록 매체의 트랙에 한 블럭 단위로 광을 조사하는 광 조사수단과, 상기 광 조사수단의 광이 조사됨에 따라 각각 다른각도로 회절된 회절광을 검출하기위한 광 검출 수단과, 상기 광 검출수단의 출력을 입력받아 블럭의 종류를 판별하기위한블럭 판단수단과, 상기 블럭 판단수단의 출력값에 대응되는 디지탈신호를 출력하기위한 룩엎 테이블과, 상기 블럭 판단수단과 룩엎 테이블로부터 출력되는 디지탈 신호를 입력받아 비트 클럭과 피크치 검출을 위한 동기신호를 상기 블럭 판단수단과 룩엎 테이블로 출력하기 위한 비트클럭 및 동기검출수단을 포함하여 구성된 것이다.Such an optical recording medium using the diffraction grating of the present invention alternately forms the permeable membrane and the barrier membrane in the form of the diffraction grating on the track at right angles to the direction of travel of the track, and the barrier membrane and the permeable membrane having the same number as the unit block are formed as a unit block. The data is recorded by varying the lengths of the permeable membrane and the blocking membrane of each unit block so as to correspond to the respective data. An optical recording medium recorded so that light diffracted at an angle is output, light irradiation means for irradiating light on a track of the optical recording medium in units of blocks, and diffraction at different angles as light from the light irradiation means is irradiated A light detecting means for detecting the diffracted light, a block determining means for determining the type of the block by receiving the output of the light detecting means, and the block A block table for outputting a digital signal corresponding to an output value of a block determining means and a block signal for synchronizing a bit clock and a peak value by receiving a digital signal output from the block determining means and the table; It includes a bit clock and a synchronous detection means for outputting.

Description

회절격자를 이용한 광 기록 매체 및 이의 재생 장치Optical recording medium and diffraction grating using the diffraction grating

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

제4도는 본 발명에 따른 회절격자의 주파수 및 회절격자 구성예 설명도, 제5도는 본 발명 제1실시예의 투과형 광 디스크의 일부를 나타낸 도면, 제6도는 본 발명의 투과형 광 디스크의 기술적 이론을 설명하기 위한 참고도.4 is a view illustrating the frequency and configuration of a diffraction grating of the diffraction grating according to the present invention, FIG. 5 is a view showing a part of the transmissive optical disc of the first embodiment of the present invention, and FIG. Reference diagram for illustration.

Claims (5)

트랙상에 트랙의 진행방향과 직각되게 회절격자의 형태로 투과막과 차단막을 교대로 형성하여 소정 갯수와동일 규격의 차단막과 투과막을 단위 블럭으로 하고, 각 단위 블럭의 투과막과 차단막의 길이를 각 데이타에 상응하도록다르게 하여 데이타를 기록함을 특징으로 하는 회절격자를 이용한 광 기록 매체.The permeable membrane and the barrier membrane are alternately formed on the track in the form of a diffraction grating perpendicular to the direction of movement of the track, and the permeable membrane and the permeable membrane of a predetermined number and the same size are used as unit blocks. An optical recording medium using a diffraction grating, characterized by recording data in a different manner corresponding to each data. 제1항에 있어서, 투과막과 차단막을 교대로 형성함 대신에 투과막과 차단막의 주기만큼의 경사진 길이를갖도록 하여 데이타를 기록함을 특징으로 하는 회절격자를 이용한 광 기록 매체.An optical recording medium using a diffraction grating according to claim 1, wherein the data is recorded in such a manner that the inclined length is equal to the period of the permeable membrane and the barrier membrane instead of alternately forming the permeable membrane and the barrier membrane. 제1항 또는 제2항에 있어서, 기록 비트 스트림의 3비트를 한 블럭으로 하여 각 블럭 별로 8가지의 특정주기를 갖도록 기록함을 특징으로 하는 회절격자를 이용한 광 기록 매체.The optical recording medium using a diffraction grating according to claim 1 or 2, wherein three bits of the recording bit stream are recorded as one block with eight specific periods for each block. 회절격자를 이용하여 각 블럭 단위로 각각 다른 각도로 회절된 광이 출력되도록 기록된 광 기록 매체와, 상기 광 기록 매체의 트랙에 한 블럭 단위로 광을 조사하는 광 조사수단과, 상기 광 조사수단의 광이 조사됨에 따라 각각다른 각도로 회절된 회절광을 검출하기 위한 광 검출 수단과, 상기 광 검출수단의 출력을 입력받아 블럭의 종류를 판별하기위한 블럭 판단수단과, 상기 블럭 판단수단의 출력값에 대응되는 디지탈신호를 출력하기위한 룩엎 테이블과, 상기 블럭판단수단과 룩엎 테이블로부터 출력되는 디지탈 신호를 입력받아 비트 클럭과 피크치 검출을 위한 동기신호를 상기 블럭판단수단과 룩엎 테이블로 출력하기 위한 비트클럭 및 동기검출수단을 포함하여 구성됨을 특징으로 하는 회절격자를 이용한 광 기록 매체의 재생장치.An optical recording medium recorded so as to output diffracted light at different angles in units of blocks using a diffraction grating, light irradiation means for irradiating light on a track of the optical recording medium in units of blocks, and the light irradiation means Light detecting means for detecting diffracted light diffracted at different angles as the light is irradiated, a block judging means for determining the type of block by receiving the output of the light detecting means, and an output value of the block judging means A bit table for outputting a digital signal corresponding to the bit signal, and a bit for outputting a digital signal output from the block determining means and the look table to the block determining means and the look table. An apparatus for reproducing an optical recording medium using a diffraction grating, comprising a clock and a synchronous detecting means. 제4항에 있어서, 광 검출수단은 광 기록 매체의 특정주기에 해당하는 갯수의 수광센서로 구성됨을 특징으로 하는 회절격자를 이용한 광 기록 매체의 재생장치.5. An apparatus according to claim 4, wherein the light detecting means comprises a number of light receiving sensors corresponding to a specific period of the optical recording medium. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950000367A 1995-01-10 1995-01-10 Optical recording medium and reproducing apparatus using grating lens KR0144193B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950000367A KR0144193B1 (en) 1995-01-10 1995-01-10 Optical recording medium and reproducing apparatus using grating lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950000367A KR0144193B1 (en) 1995-01-10 1995-01-10 Optical recording medium and reproducing apparatus using grating lens

Publications (2)

Publication Number Publication Date
KR960030124A true KR960030124A (en) 1996-08-17
KR0144193B1 KR0144193B1 (en) 1998-07-15

Family

ID=19406596

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950000367A KR0144193B1 (en) 1995-01-10 1995-01-10 Optical recording medium and reproducing apparatus using grating lens

Country Status (1)

Country Link
KR (1) KR0144193B1 (en)

Also Published As

Publication number Publication date
KR0144193B1 (en) 1998-07-15

Similar Documents

Publication Publication Date Title
KR970003175A (en) Data recording medium
DE69422870T2 (en) Information recording media, optical disks and playback system
KR950004231A (en) Optical discs and record and playback devices with copy protection
KR970071678A (en) Optical disc media, optical disc device and optical disc tracking method
KR920006912A (en) Magnetic recording method and circuit of toll road map
DE68922552T2 (en) Information recording and reproducing apparatus with optical discs.
HUP0100377A2 (en) Optical disc and apparatus for scanning the optical disc
KR850000096A (en) PCM signal recording and playback device
DE69626237D1 (en) Data recording / reproducing apparatus, method therefor, and data recording medium
KR950027677A (en) Recording media and signal recording devices and signal reproducing apparatus
KR850004153A (en) Optical recording media
KR920003252A (en) Digital signal recorder
KR890015246A (en) Digital audio signal player
DE68920250T2 (en) Track signal in an optical information recording and / or reproducing device.
KR960002333A (en) Recording medium for video song accompaniment and video song accompaniment suitable for this
KR960030124A (en) Optical recording medium and diffraction grating using the diffraction grating
KR840002133A (en) Data player
UA76941C2 (en) Information carrier, device for reproducing information, and information system that contains the carrier and the device
KR880002128A (en) Signal reproduction circuit of magnetic recording device
KR870000648A (en) Data transmission and detection system
DE69809178T2 (en) Device for recording and reproducing optical disks
KR960030225A (en) Magnetic recording and reproducing apparatus and data recording and reproducing method therefor
KR970071559A (en) Compatibility record playback device and method
KR930003041A (en) Information recording medium and playback device
JPH07326054A (en) Optical recording medium recorder

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20060324

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee