Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Tuesday 25.01.2022 at 12:00 PM CET
Settings

Settings

Goto Application

1. KR1020050109953 - METHOD FOR TWO DIMENSIONAL CONTROL OF MARK SIZE ON AN OPTICAL DISC, WRITE STRATEGY FOR SUCH A METHOD, RECORDING MEDIUM AND RECORDER USING TWO DIMENSIONAL CONTROL OF MARK SIZE

Office
Republic of Korea
Application Number 1020057016245
Application Date 01.09.2005
Publication Number 1020050109953
Publication Date 22.11.2005
Publication Kind A
IPC
G11B 7/00
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
G11B 7/007
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks
G11B 7/0045
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
G11B 7/013
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks
013for discrete information, i.e. where each information unit is stored in a distinct location
CPC
G11B 7/126
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
126Circuits, methods or arrangements for laser control or stabilisation
G11B 7/00456
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
00456Recording strategies, e.g. pulse sequences
G11B 7/24085
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
2407Tracks or pits; Shape, structure or physical properties thereof
24085Pits
Applicants KONINKLIJKE PHILIPS ELECTRONICS N.V.
코닌클리케 필립스 일렉트로닉스 엔.브이.
Inventors MEINDERS ERWIN R.
마인더스 에르빈 알.
HELLMIG JOACHIM W.
헬미그 요아킴 더블유
LANGEREIS GERARDUS R.
란게레이스 게라르두스 알.
Agents 이화익
Priority Data 03075670.4 04.03.2003 EP
Title
(EN) METHOD FOR TWO DIMENSIONAL CONTROL OF MARK SIZE ON AN OPTICAL DISC, WRITE STRATEGY FOR SUCH A METHOD, RECORDING MEDIUM AND RECORDER USING TWO DIMENSIONAL CONTROL OF MARK SIZE
(KO) 광 디스크 상에서의 마크 크기의 2차원 제어방법, 이방법을 위한 기록 스트래티지, 마크 크기의 2차원 제어를이용한 기록매체와 레코더
Abstract
(EN)

An optical recording method is disclosed for writing a two-dimensional data pattern in a phase-change disc, i.e. a optical disc with a phase change material. The effect of thermal cross- erase is used by using the sides of the diffraction limited laser spot to heat up the adjacent track such that previously written data are partly erased. The amount of erasure is well controlled by the applied write strategy and determines the final mark size by erasing the side of the mark facing the laser spot. The mark can be initially written with a laser spot that results in a mark size that is larger than desired and subsequently, when marks in an adjacent track are being recorded, reduced in size by erasing the sides of the mark by irradiating the sides of the mark with the sides of the diffraction limited laser spot that is focused on the adjacent track.

© KIPO & WIPO 2007


(KO) 상변화 디스크, 즉 상변화 물질을 갖는 광 디스크에 2차원 데이터 패턴을 기록하는 광학 기록방법이 개시된다. 이전이 기록된 데이터가 일부 소거되도록 회절제한된 레이저 스폿의 측면들을 사용하여 인접한 트랙을 가열함으로써, 열적 교차소거의 효과를 이용한다. 소거의 양은, 적용된 기록 스트래티지에 의해 양호하게 제어되며, 레이저 스폿에 대향하는 마크의 측면을 소거하여 최종적인 마크 크기를 좌우한다. 원하는 것보다 큰 마크 크기를 갖고, 그후, 인접 트랙에 있는 마크들이 기록되고 있을 때, 인접 트랙에 초점이 맞추어진 회절제한된 레이저 스폿의 측면들로 마크들의 측면을 조사하여 마크의 측면들의 소거함으로써 크기가 줄어든 마크를 마크 크기를 제공하는 레이저 스폿으로 마크들이 초기에 기록될 수 있다.