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    • 3. 发明授权
    • Optical disk recording method and device
    • US5617394A
    • 1997-04-01
    • US413894
    • 1995-03-30
    • Satoru Sanada
    • Satoru Sanada
    • G11B20/10G11B7/004G11B20/12G11B20/18G11B7/00
    • G11B20/1258G11B20/1879G11B2020/10916G11B7/004
    • A data recording method adapted for recording data on an optical disk having multiple tracks addressed as sectors on its recording surface. The method includes, setting the number of sectors to be recorded on a track based the position of the track on the optical disk and recording data on the track based on the number of sectors to be recorded as set during the setting step. Also provided is an optical disk recording method adapted for recording data on an optical disk having spiral shaped multiple tracks addressed as sectors on its recording surface and the number of sectors per track of the multiple tracks depending on the radial position of the track relative to a center position of the optical disk. The method includes initializing at least one sector writing data onto the initialized sectors and verifying the written sectors. Also provided is an optical disk recording device that includes an optical disk drive device recording data in relation to an optical disk having multiple tracks addressed as sectors, a memory unit storing the data to be recorded on the optical disk, a recording control unit reading and outputting to the optical disk drive device, memory unit, and a setting circuit changing a specified amount of data depending on the radial position on the optical disk onto which the data is to be recorded. Finally, an optical disk recording device is provided which includes an optical disk drive device recording data in relation to an optical disk, a memory unit storing data to be recorded on the optical disk, a recording control circuit controlling the optical disk drive device, by initializing the specified number of sectors to be recorded on the optical disk, reading the data in an amount equivalent to the specified number of sectors among the sectors stored in the memory unit, writing that data onto the sectors that have been initialized and verifying the written sectors. Also, a setting circuit sets the specified number of sectors to be processed by a single recording operation.
    • 4. 发明授权
    • Optical disk playback and recording device which alternately allocates
logical addresses on different sides of disk
    • 在盘的不同侧交替分配逻辑地址的光盘播放和记录装置
    • US5761160A
    • 1998-06-02
    • US606818
    • 1996-02-26
    • Satoru Sanada
    • Satoru Sanada
    • G11B7/00G11B7/005G11B7/007G11B7/14G11B20/12G11B27/00G11B27/30G11B17/22
    • G11B20/1217G11B27/002G11B27/3027G11B7/14G11B2020/10916
    • An optical disk playback and recording device has a control unit which alternately allocates sequential logical addresses between single or multiple continuous sectors on each side of a two-sided optical disk with disk regions divided into tracks having sectors. The device also has first and second playback and recording heads, one disposed on each side of the disk, playing back data from or recording data to sectors identified by the logical addresses of data for playback or recording. Such a device achieves increased data transmission speeds by allowing access to data occupying alternately located sectors on each side of the optical disk by both the first and second heads. The control unit also controls access to such an optical disk. Where the optical disk playback and recording device has a higher playback and recording frequency for tracks located toward the periphery of the disk, the device can achieve both uniform and increased data transmission speeds. The device has a control unit alternately allocating sequential logical addresses to a varying number of continuous sectors between sectors in tracks located toward the center of one side of the disk and sectors in tracks located toward the periphery of the other side of the disk. The control unit also controls access to such an optical disk.
    • 光盘播放和记录装置具有控制单元,该控制单元在双面光盘的每一侧上的单个或多个连续扇区之间交替地分配顺序逻辑地址,其中盘区被划分成具有扇区的轨道。 该设备还具有第一和第二播放和记录头,一个设置在盘的每一侧,从数据的逻辑地址识别的扇区回放数据或将数据记录到用于回放或记录的逻辑地址。 这种装置通过允许通过第一和第二磁头访问占据光盘两侧的交替定位的扇区的数据来实现增加的数据传输速度。 控制单元还控制对这种光盘的访问。 在光盘回放和记录装置对于朝向盘的周边的轨道具有更高的回放和记录频率的情况下,该装置可以实现均匀和增加的数据传输速度。 该装置具有控制单元,其交替地将顺序逻辑地址分配给位于盘的一侧的中心的轨道中的不同数量的连续扇区,以及位于盘的另一侧周边的轨道中的扇区。 控制单元还控制对这种光盘的访问。