Método de grabación de información de ondulación, medio de grabación de información, y método de grabación y reproducción y aparato para el mismo

    公开(公告)号:ES2381580T3

    公开(公告)日:2012-05-29

    申请号:ES10158708

    申请日:2005-05-10

    Applicant: PANASONIC CORP

    Abstract: Un método para decidir una dirección de ondulación de un medio de grabación de información (301) que comprende una capa de grabación (102, 502, 504) que incluye una pista de tierra y una pista de surco que está más cerca de un rayo láser incidente que la pista de tierra, comprendiendo dicho método: seleccionar un sistema de grabación del medio de grabación de información (301) a partir del sistema de grabación de tierra, que permite que la información se grabe solo en la pista de tierra como la pista de grabación, y el sistema de grabación de surco, que permite que la información se grabe solo en la pista de surco como la pista de grabación; caracterizado por: decidir la primera desviación de ondulación sobre la pista de grabación, de manera que una dirección física hacia la que comienza una primera desviación de ondulación cuando se selecciona el sistema de grabación de tierra es simétrica especular de una dirección física hacia la que comienza la primera desviación de ondulación, cuando se selecciona el sistema de grabación de surco.

    WOBBLE INFORMATION RECORDING METHOD, INFORMATION RECORDING MEDIUM, AND RECORDING AND REPRODUCTION METHOD AND APPARATUS THEREOF

    公开(公告)号:MY145491A

    公开(公告)日:2012-02-29

    申请号:MYPI20101912

    申请日:2005-05-11

    Applicant: PANASONIC CORP

    Abstract: AN OPTICAL DISK AND A METHOD FOR IDENTIFYING THE OPTICAL DISK ARE PROVIDED WHICH MAKE IT POSSIBLE TO IDENTIFY A RECORDING SYSTEM OF THE OPTICAL DISK EASILY IN SHORT TIME BY A RECORDING AND REPRODUCTION APPARATUS WHEN GROOVE-RECORDING SYSTEM AND A LAND-RECORDING SYSTEM ARE BOTH EMPLOYED IN ONE KIND OF OPTICAL DISK, FOR EXAMPLE, A BD-R. SPECIFICALLY, THE POLARITY UPON REPRODUCING THE WOBBLE INFORMATION IS MADE TO BE THE SAME IN BOTH OF THE OPTICAL DISK OF GROOVE-RECORDING SYSTEM AND THE OPTICAL DISK OF LAND-RECORDING SYSTEM. THE RECORDING SYSTEM OF THE OPTICAL DISK THAT SHOWS THE SAME WOBBLE POLARITY IRRESPECTIVE OF THE RECORDING SYSTEM CAN BE EASILY DETECTED BY FINDING A TRACKING POLARITY THAT CAN RECOGNIZE THE WOBBLE INFORMATION BY CHANGING THE TRACKING POLARITY, WHEREBY THE START-UP TIME OF THE RECORDING AND REPRODUCTION APPARATUS CAN BE SHORTENED.

    8.
    发明专利
    未知

    公开(公告)号:AT448543T

    公开(公告)日:2009-11-15

    申请号:AT05785219

    申请日:2005-09-26

    Applicant: PANASONIC CORP

    Inventor: ISHIDA TAKASHI

    Abstract: The invention aims to provide a recordable dual-layer optical disc (101,601) which allows precise recording learning on both layers (202,204). A first information recording layer (202) located further from the light incidence side includes a read-only control data area (304a,504a), a first test area (306a, 506a), and a second test area (315a,515a). A second information layer (204) located closer to the light incidence side includes a third test area (304b,504b) located at a position opposite to the control data area (304a,504a), and a fourth test area (315b,515b) located at a position opposite to the second test area (315a,515a).

    9.
    发明专利
    未知

    公开(公告)号:DE69739279D1

    公开(公告)日:2009-04-09

    申请号:DE69739279

    申请日:1997-06-24

    Abstract: An optical disc using a single-spiral land and groove track format enabling accurate tracking offset correction and reliable detection of the transition point between a land track and a groove track, and a driving apparatus therefor, are disclosed. Four physical address areas PID1, PID2, PID3, and PID4 are recorded to a header area such that PID1 and PID2 are offset one-half track pitch toward the outside circumference of the disc from the groove track center, and PID3 and PID4 are offset one-half track pitch toward the inside circumference of the disc from the groove track center, and the physical address areas PID1 - PID4 can be detected by means of a difference signal in the radial direction. The single frequency pattern area VFO at the beginning of each PID is lengthened by PID1 and PID3, thereby enabling tracking offset correction using a sum signal, and detection of the land-groove transition point using a difference signal obtained from the PID offset. The frequency of the VFO pattern may be set lower than the highest frequency of the channel bit sequences of the modulation method used on the disc. Address marks may employ a channel bit pattern which includes two sequenses which are longer than the longest mark length of the modulation method.

Patent Agency Ranking