Abstract:
A device enabled to prevent an increase in a starting time period even in the presence of both disks having a recording groove track and a recording land track. An optical disk (101) is of the type for recording in the groove track, and an optical disk (107) is of the type for recording in the land track. These individual optical disks (101, 107) are provided with control data areas (102, 108) and data recording areas (103, 109) for recording user data. In both the optical disks (101, 107), the control data areas (102, 108) have codes recorded therein for indicating which track is to be tracking-servoed.
Abstract:
INFORIYU11ON RECORDING MEDRML INIEGRATED CIRCURR, RECORDING/PLAYBACKAPPARATUS, COMPUTER PROGRAK 5 AND INFORMATION RECORDINMIAYBACK NEMOD AN OPTICAL DISK 101 IS OF A TYPE IN WHICH INFORMATION IS RECORDED ON A GROOVE TRACK, AND AN OPTICAL DISK 107 IS OF A TYPE IN WHICH INFORMATION IS RECORDED ON A LAND TRACK. THE OPTICAL DISK 101 HAS A CONTROL DATA AREA 102, AND 10 A DATA RECORDING AREA 103 IN WHICH USER DATA IS RECORDED. THE OPTICAL DISK 107 HAS A CONTROL DATA AREA 108, AND A DATA RECORDING AREA 109 IN WHICH USER DATA IS RECORDED. A CODE FOR INDICATING THE GROOVE TRACK OR THE LAND TRACK ONTO WHICH TRACKING SERVO CONTROL IS EXECUTED IS PROVIDED BOTH IN THE CONTROL DATA AREA 102 OF THE OPTICAL DISK 101, AND IN THE CONTROL DATA AREA 108 OF THE OPTICAL DISK 107. 15 FIGS. 1A, 18
Abstract:
Medio de grabación de información (500; 900), que comprende: una pluralidad de capas de grabación (501, 502; 901, 904); y un área de grabación de prueba (1007, 1008; 909, 915) para determinar una potencia de grabación de una luz láser para cada una de la pluralidad de capas de grabación, en el que una primera área de grabación de prueba (1007; 915) de una primera capa (501; 904) y una segunda área de grabación de prueba (903) de una segunda capa de grabación (502; 902) adyacente a la primera capa están previstas en posiciones radiales diferentes; y caracterizado porque una zona tampón (108, 112; 908, 914) está prevista de manera contigua antes y después de cada área de grabación de prueba; y en el que una potencia de grabación de la primera capa de grabación se decide utilizando la primera área de grabación de prueba de un lado de la primera área de grabación de prueba que presenta la posición radial más alejada de la segunda área de grabación de prueba, en el que una potencia de grabación de la segunda capa de grabación se decide utilizando la segunda área de grabación de prueba de un lado de la segunda área de grabación de prueba que presenta la posición radial más alejada de la primera área de grabación de prueba.
Abstract:
A multi-layered information recording medium comprising a plurality of recording layers, a user data area for recording user data, provided in at least two of the plurality of recording layers, and a defect list storing area for storing a defect list. When at least one defective area is detected in the user data area, the defect list is used to manage the at least one defective area. The defect list storing area is provided in only one of the plurality recording layers.
Abstract:
AN OPTICAL RECORDING MEDIUM IS DISCLOSED THAT ALLOWS INFORMATION TO BE RECORDED AND PLAYED BACK PROPERLY, EVEN WHEN A TYPE OF RECORDING MEDIUM IN WHICH INFORMATION IS RECORDED TO GROOVES (446) IS USED ALONG WITH A TYPE OF RECORDING MEDIUM IN WHICH INFORMATION IS RECORDED TO LANDS (445), AS WELL AS A METHOD FOR RECORDING AND PLAYBACK WITH THIS MEDIUM. RECORDING TRACK INFORMATION IS RECORDED IN ADVANCE, INDICATING WHETHER INFORMATION IS TO BE RECORDED INTHE GROOVES (446) OR THE LANDS (445), WHICHEVER OF THE GROOVES (446) AND LANDS (445) IS BEST SUITED TO THE RECORDING OF INFORMATION IS SELECTED ON THE BASIS OF THE RECORDING TRACK INFORMATION THAT IS READ OUT, AND THE RECORDING OR PLAYBACK OF INFORMATION IS PERFOMED.
Abstract:
Un soporte (1) de registro en forma de disco multicapa que comprende una primera capa (L0) de registro y una segunda capa (L1) de registro formada en una posición en dirección al espesor del medio que está más próxima a una superficie de la capa de cobertura que dicha primera capa (L0) de registro, caracterizado porque dicho soporte de registro multicapa comprende una capa CVL de cobertura sobre una superficie de la cual entra luz para el registro y/o reproducción de ambas primera y segunda capas de registro, y dicha primera capa (L0) de registro está formada en una posición tal, en la dirección del espesor del soporte (1) de registro en forma de disco multicapa, que la distancia desde dicha superficie de la capa de cobertura hasta la primera capa (L0) de registro es igual a la distancia, en la dirección de su espesor, desde una superficie de una capa de cobertura de un soporte de registro en forma de disco monocapa a través de la cual entra la luz para el registro y/o reproducción en una sola capa de registro del soporte de registro en forma de disco monocapa, utilizando luz de láser con la misma longitud de onda utilizada con el soporte de registro en forma de disco multicapa, y utilizando una lente objetivo con la misma apertura numérica utilizada con el soporte de registro en forma de disco multicapa, en el que está dispuesta una zona de sustitución en cada una de dichas primea a enésima capas de registro.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical disc with marks for dispersed addresses that can be easily detected with high precision. SOLUTION: A dispersed address comprises synchronization marks, positive marks, and negative marks. Synchronization marks, positive marks, and negative marks are formed along a groove as partial discontinuities or partial modifications in the wobbled groove. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent an increase in starting time of an apparatus even when both types of disks are present, one type which performs recording on a groove track and the other which performs recording on a land track. SOLUTION: An optical disk 101 is a type which performs recording on a groove track, and an optical disk 107 is a type which performs recording on a land track. The optical disks 101 and 107 have control data areas 102 and 108, and data recording areas 103 and 109 in which user data are recorded. A code indicating to which track tracking servo is to be applied is recorded in the control data area 102 and 108 of both the optical disks 101 and 107. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical storage medium and an optical information device, capable of recording/reproducing information with high reliability, even when an optical storage medium is used, wherein jitters regarding a shortest mark and space are worse than jitters regarding a mark and space longer than the shortest mark and space. SOLUTION: The optical information device includes: an optical pickup head for irradiating the optical storage medium with an optical beam to receive the optical beam reflected from the optical storage medium, and for output of a signal based on the received optical beam; a jitter measurement unit for measuring jitters of the signal output from the optical pickup head; and a decision unit for determining whether the optical storage medium is defective based on the measured jitters. The jitter measurement unit measures jitters for ≥3T mark 903 or a space row for the optical storage medium wherein digital information is recorded as a kT mark or space based on an integer k of ≥2 and a cycle T. COPYRIGHT: (C)2010,JPO&INPIT