Method of and apparatus for positioning transducers by digital conversion of analog signals
    2.
    发明公开
    Method of and apparatus for positioning transducers by digital conversion of analog signals 失效
    通过模拟信号的数字转换来定位换能器的方法和装置

    公开(公告)号:EP0490876A3

    公开(公告)日:1995-03-29

    申请号:EP92102582.1

    申请日:1985-04-04

    摘要: A method of and apparatus for obtaining digital expression of analog signals, in particular signals produced by "reading" (i.e., tranducing) head-positioning information recorded on storage media, for example magnetic recording media. Head-positioning signals (36, 38) constitute signals bursts which are processed to obtain pulses whose width is dictated by the amplitude of the detected bursts, and the pulse width in each instance is expressed digitally by using the magnitude of the pulse to drive a counter-timer (61). The resulting count integrally embodies a digitized representation of the initial analog signal burst, which is directly available for further processing by digital means and for storage in digital memory apparatus.

    摘要翻译: 一种用于获得模拟信号的数字表达的方法和设备,特别是通过“读取”(即,转换)记录在存储介质(例如磁记录介质)上的头部定位信息产生的信号。 头部定位信号(36,38)构成信号脉冲串,其被处理以获得其宽度由检测到的脉冲串的幅度所决定的脉冲,并且通过使用脉冲的幅度来数字地表示脉冲宽度以驱动 计时器(61)。 所得到的计数整体地体现了初始模拟信号突发的数字化表示,其可直接用于通过数字装置进一步处理并存储在数字存储装置中。

    Aufzeichnung und Wiedergabe von Informationen bei ROM-RAM-Speichermedien
    4.
    发明公开
    Aufzeichnung und Wiedergabe von Informationen bei ROM-RAM-Speichermedien 失效
    Aufzeichnung und Wiedergabe von Informationen bei ROM-RAM-Speichermedien。

    公开(公告)号:EP0575934A2

    公开(公告)日:1993-12-29

    申请号:EP93109864.4

    申请日:1993-06-21

    IPC分类号: G11B7/007 G11B11/10 G11B13/04

    摘要: 1. Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Aufzeichnung und Wiedergabe von Informationen bei einem ROM-RAM-Speichermedium.
    2. Aufgabe ist es, die verfügbare Speicherkapazität des ROM-RAM-Speichermediums trotz unterschiedlicher Aufzeichnungs- und Wiedergabeverfahren auf eine über die mit der Summe der unterschiedlich Verfahren erreichbare Kapazität hinausgehend zu erhöhen und die durch das Wobbeln der ROM-Informationsspur bedingten Nachteile bei gleichzeitiger Verringerung des Aufwandes zu vermeiden.
    2.2 Erfindungsgemäß werden zur Aufzeichnung von Informationen aus dem ROM-Bereich des ROM-RAM-Speichermediums gelesene Daten zur Hilfe genommen und/oder eine Wiedergabe von Informationen aus dem RAM-Bereich unter Zuhilfenahme von aus dem ROM-Bereich des ROM-RAM-Speichermediums gelesener Daten durchgeführt.
    2.3 Das Anwendungsgebiet betrifft insbesondere ROM-RAM-Speichermedien sowie entsprechende Geräte zur Aufzeichnung und Wiedergabe der Informationen.

    摘要翻译: 本发明涉及一种用于在ROM-RAM存储介质中记录和再现信息的过程和装置。 目的是将ROM-RAM存储介质的可用存储容量尽可能不同于记录和复制方法,达到超过可通过不同方法总和达到的容量,并避免缺点 由于ROM信息轨道的波动而同时减少了支出。 2.2根据本发明,为了从ROM-RAM存储介质的ROM区域记录信息,借助于从ROM区读取的数据来执行使用读取数据和/或来自RAM区域的信息的再现 的ROM-RAM存储介质。 2.3应用领域特别涉及ROM-RAM存储介质和用于记录和再现信息的相应设备。

    Method of apparatus for playing back recordable optical disc
    5.
    发明公开
    Method of apparatus for playing back recordable optical disc 失效
    Methode undGerätzur Wiedergabe einer beschreibbaren optischen Platte。

    公开(公告)号:EP0526250A2

    公开(公告)日:1993-02-03

    申请号:EP92307028.8

    申请日:1992-07-31

    摘要: Recorded information is reproduced from a recordable optical disc with a light beam applied from an optical pickup to the recordable optical disc. The recordable optical disc has a program area for recording main information, a PMA area for recording recording history information relative to main information which is in the process of being recorded in the program area, and a lead-in area for recording, as index information, recording history information relative to main information which has fully been recorded in the program area. While the recordable optical disc is at rest, it is determined whether index information is recorded in the lead-in area, and if index information is not recorded in the lead-in area, the optical pickup is moved to a region of the PMA area where the recording history information is recorded while the recordable optical disc is at rest. After the optical pickup has reached the region, the optical pickup reads the recording history information while the recordable optical disc is being rotated. After the recording history information has been read from the region, the optical pickup Is moved to the program area while the recording optical disc is being rotated at a constant speed.

    摘要翻译: 从具有从光学拾取器施加到可记录光盘的光束的可记录光盘再现记录的信息。 可记录光盘具有用于记录主要信息的程序区域,用于记录关于正在记录在程序区域中的主要信息的记录历史信息的PMA区域和用于记录的导入区域作为索引信息 记录与完全记录在程序区中的主要信息相关的历史信息。 当可记录光盘静止时,确定索引信息是否记录在导入区中,如果索引信息未被记录在导入区中,则光学拾取器移动到PMA区域的区域 其中在可记录光盘静止时记录记录历史信息。 在光学拾取器到达该区域之后,光学拾取器在可记录光盘正在旋转的同时读取记录历史信息。 在从该区域读取记录历史信息之后,在记录光盘以恒定速度旋转的同时,光学拾取器被移动到程序区域。

    Information recording medium and process for reproducing information therefrom
    7.
    发明公开
    Information recording medium and process for reproducing information therefrom 失效
    Informationsaufzeichnungsträgerund Verfahren zur Wiedergabe von信息vomInformationsaufzeichnungsträger。

    公开(公告)号:EP0227380A1

    公开(公告)日:1987-07-01

    申请号:EP86309623.6

    申请日:1986-12-10

    摘要: An information recording card has plural information tracks (3) approximately perpendicular to the direction of information arrangement in each track, and reading head alignment patterns (202) recorded along the extention of the direction of plural information tracks. An information regenerating process from the infor­mation recording card has a step of positioning a reading head by relative movement of the head and the alignment pattern, and a step of moving the reading head relative to the plural information tracks, wherein the relative speed in the former step is lower than that in the latter.

    摘要翻译: 信息记录卡具有大致垂直于每个轨道中的信息排列方向的多个信息轨道(3),以及沿着多个信息轨迹的方向延伸记录的读取头对准图案(202)。 从信息记录卡的信息再生处理具有通过头部和对准图案的相对移动来定位读取头的步骤,以及相对于多个信息轨道移动读取头的步骤,其中前者中的相对速度 步骤低于后者。

    Method of pre-recording tracking information on magnetic media
    9.
    发明公开
    Method of pre-recording tracking information on magnetic media 失效
    Verfahren zur Voraufzeichnung von Positionierinformationen auf magnetischeAufzeichnungsträger。

    公开(公告)号:EP0155817A2

    公开(公告)日:1985-09-25

    申请号:EP85301749.9

    申请日:1985-03-13

    IPC分类号: G11B5/584

    摘要: A method of initializing a data-recording media (10), particularly tape, by use of the same type of media drive used for data-recording purposes, in which the edge (42) of the recordable field on the media (10) is first located by a test read / write process and the media is then transported in a succession of passes across a transducing head (62), during each of which the head is periodically and selectively energized to write spaced marker bursts (46) and servo-positioning bursts (36, 38), with the transducing head (62) being moved open-loop a distance corresponding to a half-track width between each media transport. During the first such pass, the marker bursts (46) and servo-positioning bursts (36, 38) are located on the basis of tape travel distance, and on successive passes burst location is determined by sensing the previously-recorded marker and servo bursts and timing a predetermined distance therefrom by use of an internal clock. In the case of tape, successive recording passes are made with the tape travelling alternately backwards and forwards.

    摘要翻译: 一种通过使用用于数据记录目的的相同类型的媒体驱动器来初始化数据记录介质(10),特别是磁带的方法,其中媒体(10)上的可记录字段的边缘(42)是 首先通过测试读取写入过程定位,然后在穿过变换头(62)的连续传送中传送介质,在每个通道期间周期性地选择性地激励头部以写入间隔的标记突发(46)和伺服定位 突发(36,38),其中换能头(62)被开环移动一个对应于每个介质传输之间的半轨道宽度的距离。 在第一次这样的通过期间,标记突发(46)和伺服定位脉冲串(36,38)基于磁带行进距离定位,并且在连续通路上,突发位置通过感测先前记录的标记和伺服脉冲串来确定 并且通过使用内部时钟从其定时预定距离。 在磁带的情况下,随着磁带交替地向前和向后进行连续的记录通道。

    Data processing apparatus with means for recording data by moving a head to a plurality of tracks
    10.
    发明公开
    Data processing apparatus with means for recording data by moving a head to a plurality of tracks 失效
    数据处理装置,用于通过将头移动到多个轨迹来记录数据

    公开(公告)号:EP0089020A3

    公开(公告)日:1983-10-19

    申请号:EP83102372

    申请日:1983-03-10

    摘要: A data recording apparatus is provided which has a recording/reproduction head (3) for recording data on or reproducing the data from a recording medium, a moving mechanism (92, 93) for moving the recording/reproducing head (3) on the recording medium, an error detectors (78,85) for detecting an error in accordance with a signal from the recording/reproduction head (3) in the recording mode, and a control section (21) for detecting that an access to a recording start track cannot be made by the recordingl reproduction head (3) for recording data, for determining a track number in the vicinity of the recording start track by the recording/reproduction head (3) in accordance with a detection result, and for controlling a moving mechanism (92, 93) to move the recording/reproduction head (3) to a target track ahead of a predetermined number of tracks which correspond to a distance between the target track and the recording start track without performing recording of data on the predetermined number of tracks in accordance with a detection result from a tracking error detector (78, 85).