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20 条记录 (耗时 0.014 秒)

    Optical data recording and readout apparatus
    2.
    发明公开
    Optical data recording and readout apparatus 失效
    Optisches Datenaufzeichnungs- und-wiedergabegerät。

    公开(公告)号：EP0357419A2

    公开(公告)日：1990-03-07

    申请号：EP89308810.4

    申请日：1989-08-31

    申请人： International Business Machines Corporation

    发明人： Kulakowski, John Edward ,  Means, Rodney Jerome ,  Oldham, David Mitchell ,  Tayefeh, Morovat

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13 ,  G11B7/005 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10595 ,  G11B19/04 ,  G11B20/1883 ,  G11B27/36

    摘要： The present invention relates to optically data recording and readout apparatus comprising laser means (16) for supplying a modulated light beam (17) for recording information-bearing signals onto a record member (10), the record member being capable of recording the information-bearing signals as optically-sensible parameter changes of the record member, optical means (15) optically interposed between the laser means and the record member for directing reflected light from the record member away from the laser means to a first detector (20) including means responsive to intensity changes of light reflected from the record member to supply signals indicative of any such intensity changes, means (14) for receiving signals indicative of the information-­bearing signals to be recorded, recording circuit means (30) coupled to the information bearing signal receiving means (14) and to the laser means (16) for responding to the received signals to actuate the laser means to modulate the intensity of its emitted light beam directed to the record member via the optical means, and readout circuit means (23) coupled to the optical means (15) for receiving reflected light from the record medium and for converting signals represented in the reflected light into a predetermined data format.
    According to the invention, the optical apparatus is characterised in that it further comprises a second detector (35) adapted to receive light from the optical means, pulse-shaping means (49) for coupling the record detector to the readout circuit means (23) for transferring intensity-modulated indicating signals to the readout circuit means (23) which converts the intensity modulated reflected signals into a predetermined data format, and data comparison means (54) connected to the information bearing signal receiving means (14) and to the readout circuit means (23) for comparing the converted signals with the received signals and for generating a predetermined error indication when the comparison indicates a predetermined difference between the converted and the received signals.

    摘要翻译： 本发明涉及光学数据记录和读出设备，其包括用于提供用于将信息承载信号记录到记录部件（10）上的调制光束（17）的激光装置（16），该记录部件能够记录信息 - 支承信号作为记录构件的光学敏感参数变化，光学装置（15）光学地插入在激光装置和记录构件之间，用于将来自记录构件的反射光远离激光装置引导到第一检测器（20），第一检测器 响应于从记录构件反射的光的强度变化来提供指示任何这种强度变化的信号;用于接收指示要记录的信息承载信号的信号的装置（14）;耦合到信息承载的记录电路装置（30） 信号接收装置（14）和激光装置（16），用于响应所接收的信号以激活激光装置来调节内径 其发射光束经由光学装置被引导到记录构件;以及读出电路装置（23），耦合到光学装置（15），用于接收来自记录介质的反射光，并将反射光中表示的信号转换为 预定数据格式。 根据本发明，光学装置的特征在于它还包括适于接收来自光学装置的光的第二检测器（35），用于将记录检测器耦合到读出电路装置（23）的脉冲整形装置（49） 用于将强度调制指示信号传送到将强度调制的反射信号转换为预定数据格式的读出电路装置（23），以及连接到信息承载信号接收装置（14）和读出器的数据比较装置 电路装置（23），用于将转换的信号与接收的信号进行比较，并且用于当比较指示转换的和接收的信号之间的预定差异时产生预定的错误指示。

    Optical device for detecting modulation in a light beam
    3.
    发明公开
    Optical device for detecting modulation in a light beam 失效
    用于检测光束调制的光学装置

    公开(公告)号：EP0432977A3

    公开(公告)日：1992-12-16

    申请号：EP90313350.2

    申请日：1990-12-07

    申请人： International Business Machines Corporation

    发明人： Tayefeh, Morovat

    IPC分类号： G11B11/10 ,  G11B7/13 ,  G11B7/00

    CPC分类号： G11B11/10543 ,  G11B7/005

    摘要： The present invention relates to an optical detection circuit comprising detecting means for detecting signals representing both polarisation modulation and intensity modulation in a received light beam. According to the invention the device is characterised in that the detecting means comprises polarisation modulation detection means (32, 33) for detecting two forms of polarisation, and conversion means (40) for selectively inhibiting the portion of the polarisation modulation detection means which detects one of the forms of polarisation so as to convert the polarisation modulation detection means into intensity modulation detection means when required.

    Re-writable data storage medium and data storage system including such a medium
    4.
    发明公开
    Re-writable data storage medium and data storage system including such a medium 失效
    Wiederbeschreibbares Datenspeichermedium und Datenspeichersystemfürein solches Medium。

    公开(公告)号：EP0478201A1

    公开(公告)日：1992-04-01

    申请号：EP91308436.4

    申请日：1991-09-16

    申请人： International Business Machines Corporation

    发明人： Kulakowski, John Edward ,  Means, Rodney Jerome ,  Tayefeh, Morovat

    IPC分类号： G11B7/013 ,  G11B7/007

    CPC分类号： G11B7/00745 ,  G11B7/013

    摘要： The present invention relates to a re-writable data storage member (10) comprising a plurality of spaced apart addressable data storage areas (12) for recording and storing data and a plurality of non-data storage areas (15) interposed between adjacent ones of the addressable data storage areas for recording signals not representing data, the storage member being adapted to be scanned in a direction over the storage areas.
    According to the invention the storage member is characterised in that one of the addressable data storage areas contains first machine readable indicia indicating that the storage member contains data which is not to be changed from any original recording of the data, another of the addressable data storage areas contains second machine readable indicia indicating whether or not the storage member has been erased of data in its entirety, and each of the non-data storage areas contains third machine readable indicia indicating whether or not one of the respective adjacent addressable data storage areas can be written into.
    The invention also relates to a data storage system comprising a re-writable data storage member as above and to a method of operating such a data storage system.

    摘要翻译： 本发明涉及一种可重写数据存储部件（10），包括用于记录和存储数据的多个间隔开的可寻址数据存储区域（12）和多个非数据存储区域（15） 用于记录不表示数据的信号的可寻址数据存储区域，所述存储部件适于沿着存储区域的方向进行扫描。 根据本发明，存储构件的特征在于，可寻址数据存储区域之一包含第一机器可读标记，指示存储构件包含不从数据的任何原始记录中改变的数据，另一个可寻址数据存储 区域包含第二机器可读标记，指示存储构件是否已被完整地擦除数据，并且每个非数据存储区域包含第三机器可读标记，指示相应的相邻可寻址数据存储区域中的一个是否可以 写入。 本发明还涉及一种数据存储系统，包括如上所述的可重写数据存储构件和操作这种数据存储系统的方法。

    Optical device for detecting modulation in a light beam
    5.
    发明公开
    Optical device for detecting modulation in a light beam 失效
    OptischesGerätzur Detektion der Modulation eines Lichtstrahls。

    公开(公告)号：EP0432977A2

    公开(公告)日：1991-06-19

    申请号：EP90313350.2

    申请日：1990-12-07

    申请人： International Business Machines Corporation

    发明人： Tayefeh, Morovat

    IPC分类号： G11B11/10 ,  G11B7/13 ,  G11B7/00

    CPC分类号： G11B11/10543 ,  G11B7/005

    摘要： The present invention relates to an optical detection circuit comprising detecting means for detecting signals representing both polarisation modulation and intensity modulation in a received light beam.
    According to the invention the device is characterised in that the detecting means comprises polarisation modulation detection means (32, 33) for detecting two forms of polarisation, and conversion means (40) for selectively inhibiting the portion of the polarisation modulation detection means which detects one of the forms of polarisation so as to convert the polarisation modulation detection means into intensity modulation detection means when required.

    摘要翻译： 本发明涉及一种光检测电路，包括检测装置，用于检测表示接收光束中的偏振调制和强度调制的信号。 根据本发明，该装置的特征在于，检测装置包括用于检测两种形式的偏振的偏振调制检测装置（32,33），以及用于选择性地禁止偏振调制检测装置的一部分的转换装置（40） 以便在需要时将偏振调制检测装置转换成强度调制检测装置。