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    METHOD AND APPARATUS FOR WRITING A CLOCK TRACK ON A STORAGE MEDIUM
    1.
    发明申请
    METHOD AND APPARATUS FOR WRITING A CLOCK TRACK ON A STORAGE MEDIUM 审中-公开
    在存储介质上写入时钟轨迹的方法和装置

    公开(公告)号：WO98031015A1

    公开(公告)日：1998-07-16

    申请号：PCT/GB1998/000012

    申请日：1998-01-05

    IPC: G11B5/55 ,  G11B5/596 ,  G11B20/16 ,  G11B21/08 ,  G11B21/10 ,  G11B27/30 ,  G11B5/012 ,  G11B27/13

    CPC classification number: G11B20/16 ,  G11B5/5534 ,  G11B5/59633 ,  G11B21/083 ,  G11B27/30

    Abstract: A method and apparatus for writing clock data to a storage medium, such as a disk, is disclosed. The storage medium has tracks on which data are stored. Clock data is written to a present track on the storage medium. The written clock data is read from said present track. Clock data for a subsequent track on the storage medium is generated from the clock data read from said present track. The phase of the generated clock data for the subsequent track is compared with a reference timing signal and the phase of the generated clock data for the subsequent track is adjusted in accordance with said comparison. Said phase adjusted clock data for the subsequent track is written to said subsequent track. Phase errors can be significantly reduced and, for practical purposes, substantially eliminated. It is not necessary to provide a dedicated clock read/write head.

    Abstract translation: 公开了一种用于将时钟数据写入诸如盘的存储介质的方法和装置。 存储介质具有存储数据的轨道。 时钟数据被写入存储介质上的当前轨道。 从所述当前轨道读取写入的时钟数据。 从存储介质上的后续轨道的时钟数据从从当前轨道读取的时钟数据生成。 将后续轨道的所生成的时钟数据的相位与参考定时信号进行比较，并且根据所述比较调整用于随后轨道的所生成的时钟数据的相位。 用于后续轨道的所述相位调整的时钟数据被写入所述后续轨道。 相位误差可以显着降低，实际上基本消除。 不需要提供专用的时钟读/写头。

    READER CIRCUIT FOR OPTICAL RECORDING MEDIUM
    4.
    发明申请
    READER CIRCUIT FOR OPTICAL RECORDING MEDIUM 审中-公开
    用于光学记录介质的读取电路

    公开(公告)号：WO1989000330A1

    公开(公告)日：1989-01-12

    申请号：PCT/JP1988000679

    申请日：1988-07-06

    Applicant: KABUSHIKI KAISHA C S K ,  HORIE, Kiyoshi

    Inventor： KABUSHIKI KAISHA C S K

    IPC: G11B20/16

    CPC classification number: G11B20/16

    Abstract: A circuit for reading from an optical recording medium having a clock track which is provided in parallel with data tracks and holds recorded clock bits forming a predetermined optical pattern. A reader circuit reads a clock track which contains a series of regularly arranged clock bits and some irregular clock bits that disturb the regularity of the former clock bits. This circuit includes a phase-locked loop (PLL) circuit for receiving the clock signal read from the clock track, and irregular clock detecting means for comparing the clock output of the PLL circuit with the read signal to generate a detect pulse when the disturbing irregular clock bit is detected. Even if the PLL circuit gets unlocked temporarily, the head word is recognized according to irregular clock bits provided in the clock track when the PLL circuit returns to the locked condition. Therefore, the data which are read subsequently can be properly recognized. Further, the invention can be realized without decreasing the recording capacity of the optical recording medium.

    DISTRIBUTED ARCHITECTURE FOR MAGNETIC FARE CARD PROCESSING
    5.
    发明申请
    DISTRIBUTED ARCHITECTURE FOR MAGNETIC FARE CARD PROCESSING 审中-公开
    用于磁卡加工的分布式结构

    公开(公告)号：WO03019460A3

    公开(公告)日：2003-09-25

    申请号：PCT/US0226793

    申请日：2002-08-22

    Applicant: CUBIC CORP

    Inventor： PROW ROBERT ,  DECARLI JOHN

    IPC: G06K7/016 ,  G06K7/08 ,  G11B20/10 ,  G11B20/14 ,  G11B20/16

    CPC classification number: G11B20/16 ,  G06K7/016 ,  G06K7/084 ,  G11B20/10 ,  G11B20/14

    Abstract: A process for encoding and decoding data on the magnetic stripe of a card at any bit density is provided. Data is read from the magnetic stripe of a card and transmitted to a single board computer (110). The single board computer (110) receives the data and determines if the bit density of the card is supported by the computer. If the bit density is supported, the data is sent to a demodulator object (204, 206) to be demodulated and converted to a data stream of ASCII characters. The data stream is then decoded, unpacked and sent to a ticket validator (218) to check the validity of the data. If the bit density is not supported by the computer (110), a demodulator object supporting the bit density can be instantiated.

    Abstract translation: 提供了以任何位密度对卡的磁条上的数据进行编码和解码的处理。 从卡的磁条读取数据并将其传输到单板计算机（110）。 单板计算机（110）接收数据并确定卡的位密度是否由计算机支持。 如果支持比特密度，则将数据发送到解调器对象（204,206）进行解调并转换成ASCII字符的数据流。 然后将数据流解码，解包并发送到票证验证器（218）以检查数据的有效性。 如果计算机（110）不支持比特密度，则可以实例化支持比特密度的解调器对象。

    OPTICAL RECORDING MEDIUM
    8.
    发明申请
    OPTICAL RECORDING MEDIUM 审中-公开
    光学记录介质

    公开(公告)号：WO1989000329A1

    公开(公告)日：1989-01-12

    申请号：PCT/JP1988000678

    申请日：1988-07-06

    Applicant: KABUSHIKI KAISHA C S K ,  HORIE, Kiyoshi

    Inventor： KABUSHIKI KAISHA C S K

    IPC: G11B20/12

    CPC classification number: G11B20/16

    Abstract: An optical recording medium having a clock track is provided in parallel with data tracks and holds recorded clock bits forming a predetermined optical pattern. In an optical recording medium having a clock track and a data track, the clock track contains a series of regularly arranged clock bits and some irregular clock bits that disturb the regularity of the former clock bits. Even if the PLL circuit gets unlocked temporarily, the head word is recognized according to irregular clock bits provided in the clock track when the PLL circuit returns to the locked condition. Therefore, the data which are read subsequently can be properly recognized. Further, the invention can be realized without decreasing the recording capacity of the optical recording medium.

    DISTRIBUTED ARCHITECTURE FOR MAGNETIC FARE CARD PROCESSING
    9.
    发明申请
    DISTRIBUTED ARCHITECTURE FOR MAGNETIC FARE CARD PROCESSING 审中-公开
    用于磁卡加工的分布式结构

    公开(公告)号：WO2003019460A2

    公开(公告)日：2003-03-06

    申请号：PCT/US2002/026793

    申请日：2002-08-22

    Applicant: CUBIC CORPORATION

    Inventor： PROW, Robert ,  DECARLI, John

    IPC: G06K7/08

    CPC classification number: G11B20/16 ,  G06K7/016 ,  G06K7/084 ,  G11B20/10 ,  G11B20/14

    Abstract: A process for encoding and decoding data on the magnetic stripe of a card at any bit density is provided. Data is read from the magnetic stripe of a card and transmitted to a single board computer. The single board computer receives the data and determines if the bit density of the card is supported by the computer. If the bit density is supported, the data is sent to a demodulator object to be demodulated and converted to a data stream of ASCII characters. The data stream is then decoded, unpacked and sent to a ticket validator to check the validity of the data. If the bit density is not supported by the computer, a demodulator object supporting the bit density can be instantiated.

    Abstract translation: 提供了以任何位密度对卡的磁条上的数据进行编码和解码的处理。 数据从卡的磁条中读取并传输到单板计算机。 单板计算机接收数据并确定计算机是否支持卡的位密度。 如果支持比特密度，则将数据发送到解调器对象进行解调并转换成ASCII字符的数据流。 然后将数据流解码，解包并发送到票证验证器以检查数据的有效性。 如果计算机不支持比特密度，则可以实例化支持比特密度的解调器对象。

    METHOD AND APPARATUS FOR WRITING CLOCK DATA TO A STORAGE MEDIUM
    10.
    发明申请
    METHOD AND APPARATUS FOR WRITING CLOCK DATA TO A STORAGE MEDIUM 审中-公开
    将时钟数据写入存储介质的方法和装置

    公开(公告)号：WO01067454A1

    公开(公告)日：2001-09-13

    申请号：PCT/GB2001/000784

    申请日：2001-02-23

    IPC: G11B5/012 ,  G11B5/596 ,  G11B20/16 ,  G11B21/08 ,  G11B21/10 ,  G11B27/30 ,  G11B5/55

    CPC classification number: G11B21/106 ,  G11B5/012 ,  G11B5/59633 ,  G11B20/16 ,  G11B21/083 ,  G11B21/10 ,  G11B27/30 ,  G11B2220/20

    Abstract: In a method of writing clock data to a storage medium whilst the storage medium is rotating, a burst of clock data is read from a present track. A burst of clock data for a subsequent track on the storage medium is generated in accordance with the burst of clock data read from the present track and its phase adjusted. The phase adjusted burst of clock data is written to the subsequent track. The steps are repeated for plural bursts of clock data around a revolution of the storage medium thereby to write clock data to the subsequent track.

    Abstract translation: 在存储介质旋转时将时钟数据写入存储介质的方法中，从当前轨道中读取突发的时钟数据。 根据从当前轨道读取的时钟数据的脉冲串及其相位调整，产生用于存储介质上的随后磁道的时钟数据脉冲串。 时钟数据的相位调整脉冲串被写入随后的轨道。 对于围绕存储介质的旋转的多个脉冲串的时钟数据重复这些步骤，从而将时钟数据写入后续的轨道。

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