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    Information recording method, information recording apparatus and information recording medium
    1.
    发明授权
    Information recording method, information recording apparatus and information recording medium 失效
    信息记录方法，信息记录装置和信息记录介质

    公开(公告)号：US5737481A

    公开(公告)日：1998-04-07

    申请号：US493150

    申请日：1995-06-21

    申请人： Toyoji Gushima ,  Yoshiharu Kobayashi ,  Ryoji Yamaguchi ,  Satoshi Kondo ,  Katsuhiko Yoshida ,  Shigeru Furumiya ,  Kenji Koishi ,  Yoshinari Takemura

    发明人： Toyoji Gushima ,  Yoshiharu Kobayashi ,  Ryoji Yamaguchi ,  Satoshi Kondo ,  Katsuhiko Yoshida ,  Shigeru Furumiya ,  Kenji Koishi ,  Yoshinari Takemura

    IPC分类号： G11B7/0037 ,  G11B7/09 ,  G11B20/10 ,  H04N5/77 ,  H04N5/85 ,  H04N9/804 ,  H04N5/911 ,  H04N7/64

    CPC分类号： G11B19/044 ,  G11B19/042 ,  G11B20/10527 ,  H04N9/8047 ,  G11B2020/1062 ,  G11B7/0037 ,  G11B7/0946 ,  H04N5/772 ,  H04N5/85

    摘要： An information recording apparatus for continuously recording information without losing any information even if the apparatus temporarily falls into a recording-disable state owing to the shock externally applied, etc. is provided. A disability detector for detecting the recording-disable state is provided in the information recording apparatus, thereby interrupting the recording operation and the reading operation from the buffer memory under the recording-disable state, and making a coding rate reduction controller instruct a coder to temporarily reduce the coding rate of the input information. A remaining capacity detector is provided for monitoring the remaining capacity in the buffer memory and instructing the coder to temporarily reduce the coding rate of the input information when the remaining capacity becomes a predetermined value or less. As a result, the reduction in the remaining capacity of the buffer memory under the recording-disable state is prevented. When the overflow of the buffer memory is detected, the information after the generation of the overflow is controlled to be overwritten on a part of the data already written into the buffer memory. The variation history of the case where the recording data amount is varied by the coder because of the variation in the coding rate of the input information or the overwriting operation in the buffer memory is controlled to be recorded on the disk as rate variation management information. By dividing the recording area on a disk-shaped information recording medium into an inner circumference and an outer circumference and recording on the outer circumference after the return from the recording-disable state, the recording transfer rate after the return becomes higher.

    摘要翻译： 提供一种用于连续地记录信息而不丢失任何信息的信息记录装置，即使该装置由于外部施加的冲击而暂时处于记录禁止状态等。 在信息记录装置中提供用于检测记录禁止状态的残障检测器，从而在记录禁止状态下从缓冲存储器中断记录操作和读取操作，并使编码率降低控制器指示编码器临时 降低输入信息的编码率。 提供剩余容量检测器，用于监视缓冲存储器中的剩余容量，并指示编码器在剩余容量变为预定值或更小时临时降低输入信息的编码率。 结果，防止在记录禁止状态下缓冲存储器的剩余容量的减少。 当检测到缓冲存储器的溢出时，控制溢出生成之后的信息，以覆盖已经写入缓冲存储器的数据的一部分。 由于输入信息的编码率或缓冲存储器中的重写操作的变化而由编码器改变记录数据量的情况的变化历史被控制为以速率变化管理信息记录在盘上。 通过将盘状信息记录介质上的记录区域划分成内周和外圆，并且在从记录禁止状态返回之后在外圆周上记录，返回之后的记录传送速率​​变高。

    Optical disk system
    2.
    发明授权
    Optical disk system 失效
    光盘系统

    公开(公告)号：US5400315A

    公开(公告)日：1995-03-21

    申请号：US165560

    申请日：1993-12-13

    申请人： Kenji Koishi ,  Yoshinari Takemura ,  Shigeru Furumiya

    发明人： Kenji Koishi ,  Yoshinari Takemura ,  Shigeru Furumiya

    IPC分类号： H04N5/85 ,  G11B7/00 ,  G11B7/004 ,  G11B20/10 ,  H04N5/92 ,  H04N9/79 ,  H04N9/82

    CPC分类号： H04N9/8216 ,  H04N9/7904

    摘要： An analog-to-digital converter executes analog-to-digital conversion of a first analog video signal at a predetermined sampling frequency "fs". A time base converter converts a time base of an output signal from the analog-to-digital converter at a predetermined time base conversion frequency "ftci". A digital output signal from the time base converter is converted into a corresponding second analog video signal in response to a clock signal of a frequency corresponding to the frequency "ftci". The second analog video signal is converted into an FM video signal recorded on a video region of an optical disk. A binary audio digital signal is converted into a multi-level form digital audio signal. The binary audio digital signal has a data rate corresponding to the frequency "ftci". The multi-level form digital audio signal has a data rate "ftci/n" and 2.sup.n discrete amplitude levels where "n" denotes a predetermined integer. The multi-level form digital audio signal is converted into a corresponding analog audio signal in response to the clock signal of the frequency corresponding to the frequency "ftci". The analog audio signal is converted into an FM audio signal recorded on an audio region of the optical disk. A data signal generator generates a digital data signal at a data rate "ftci/m" where "m" denotes a predetermined integer. The digital data signal is converted into a corresponding analog data signal in response to the clock signal of the frequency corresponding to the frequency "ftci". The analog data signal is converted into an FM data signal recorded on a data region of the optical disk.

    摘要翻译： 模数转换器以预定的采样频率“fs”执行第一模拟视频信号的模数转换。 时基转换器以预定的时基转换频率“ftci”转换来自模数转换器的输出信号的时基。 响应于与频率“ftci”对应的频率的时钟信号，来自时基转换器的数字输出信号被转换成对应的第二模拟视频信号。 第二模拟视频信号被转换成记录在光盘的视频区域上的FM视频信号。 二进制音频数字信号被转换为多电平形式的数字音频信号。 二进制音频数字信号具有对应于频率“ftci”的数据速率。 多级形式数字音频信号具有数据速率“ftci / n”和2n个离散幅度电平，其中“n”表示预定的整数。 响应于对应于频率“ftci”的频率的时钟信号，多级形式的数字音频信号被转换成相应的模拟音频信号。 模拟音频信号被转换成记录在光盘的音频区域上的FM音频信号。 数据信号发生器以数据速率“ftci / m”生成数字数据信号，其中“m”表示预定的整数。 响应于对应于频率“ftci”的频率的时钟信号，将数字数据信号转换成对应的模拟数据信号。 模拟数据信号被转换成记录在光盘的数据区域上的FM数据信号。

    Method of maximum likelihood decoding and digital information playback apparatus
    3.
    发明授权
    Method of maximum likelihood decoding and digital information playback apparatus 失效
    最大似然解码方法和数字信息播放装置

    公开(公告)号：US5719843A

    公开(公告)日：1998-02-17

    申请号：US668178

    申请日：1996-06-21

    申请人： Takeshi Nakajima ,  Shigeru Furumiya ,  Yoshinari Takemura ,  Kenji Koishi

    发明人： Takeshi Nakajima ,  Shigeru Furumiya ,  Yoshinari Takemura ,  Kenji Koishi

    IPC分类号： G11B20/10 ,  H03M13/41 ,  G11B7/00

    CPC分类号： G11B20/10148 ,  G11B20/10009 ,  H03M13/41 ,  H03M13/4107 ,  H03M13/6331 ,  H03M13/6343

    摘要： A digital information playback apparatus comprises A/D converter that converts a playback signal into digital data, a maximum likelihood decoder that decodes the quantized data output from the A/D converter to obtain the original digital information, and a timing signal extractor that generates a sampling clock used in the A/D converter, and wherein the maximum likelihood decoder detects the response characteristic of the record/playback system and obtains level fluctuations contained in the playback signal, based on the survival path obtained as a maximum likelihood decoding result, to control the expected multilevel equalized values used in the maximum likelihood decoder, the timing signal extractor obtains level fluctuations, based on the survival path obtained as a maximum likelihood decoding result, and obtains the component of the level fluctuations due to phase shifts of the sampling clock of the VCO to control the phase of the sampling clock of the VCO.

    摘要翻译： 一种数字信息播放装置，包括将重放信号转换为数字数据的A / D转换器，对从A / D转换器输出的量化数据进行解码以获得原始数字信息的最大似然解码器，以及生成 在A / D转换器中使用的采样时钟，其中最大似然解码器基于作为最大似然解码结果获得的生存路径，检测记录/重放系统的响应特性并获得包含在重放信号中的电平波动， 控制在最大似然解码器中使用的期望的多级均衡值，定时信号提取器基于作为最大似然解码结果获得的存活路径获得电平波动，并且获得由于采样时钟的相移引起的电平波动的分量 的VCO来控制VCO的采样时钟的相位。

    Optical information recording/reproducing method and optical information recording/reproducing apparatus
    8.
    发明授权
    Optical information recording/reproducing method and optical information recording/reproducing apparatus 失效
    光信息记录/再现方法和光信息记录/再现装置

    公开(公告)号：US06510116B1

    公开(公告)日：2003-01-21

    申请号：US09493102

    申请日：2000-01-28

    申请人： Naoyasu Miyagawa ,  Takashi Ishida ,  Junichi Minamino ,  Kenji Koishi ,  Shigeru Furumiya

    发明人： Naoyasu Miyagawa ,  Takashi Ishida ,  Junichi Minamino ,  Kenji Koishi ,  Shigeru Furumiya

    IPC分类号： G11B509

    CPC分类号： G11B7/00456 ,  G11B7/00736 ,  G11B7/24085 ,  G11B20/10009 ,  G11B20/10481 ,  G11B2020/1275 ,  G11B2220/2537

    摘要： When data is reproduced by an apparatus which is different from an apparatus used for recording the data, the fluctuation of edge positions of the reproducing data increases, making reproduction incompatible, and the present invention solves this problem. The present invention comprises reproducing learning means 13 and 24 for switching a frequency characteristic of the reproducing system, which detects the changes of the local optical constant, to a predetermined frequency characteristic, and recording learning means 20 for correcting the start edge or end edge position of the recording pulse for each combination of length of a mark block and length of the preceding or subsequent space, so that the edge position of the binarized reproducing data comes to a desired position, and since the frequency characteristic of the reproducing system is unified before learning the edge shift amount caused by the thermal interference between marks, the length of the recorded marks and spaces can always be constant, which improves the reproducing compatibility among reproducing apparatuses.

    摘要翻译： 当通过与用于记录数据的装置不同的装置再现数据时，再现数据的边缘位置的波动增加，使得再现不兼容，并且本发明解决了这个问题。 本发明包括用于将检测局部光学常数的变化的再现系统的频率特性切换到预定频率特性的再现学习装置13和24，以及用于校正起始边缘或结束边缘位置的记录学习装置20 对于标记块的长度和前一或后续空格的长度的每个组合的记录脉冲，使得二值化再现数据的边缘位置到达期望位置，并且由于再现系统的频率特性在 学习由标记之间的热干扰引起的边缘偏移量，记录的标记和间隔的长度总是恒定的，这提高了再现装置之间的再现兼容性。

    Focusing time period and power control of a multilaser diode array
    9.
    发明授权
    Focusing time period and power control of a multilaser diode array 失效
    聚焦时间段和多极二极管阵列的功率控制

    公开(公告)号：US5671209A

    公开(公告)日：1997-09-23

    申请号：US559432

    申请日：1995-11-15

    申请人： Yuichi Kamioka ,  Kenji Koishi ,  Daisuke Ogata ,  Shigeru Furumiya

    发明人： Yuichi Kamioka ,  Kenji Koishi ,  Daisuke Ogata ,  Shigeru Furumiya

    IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/09 ,  G11B7/125 ,  G11B7/14 ,  H01S5/0683 ,  H01S5/40

    CPC分类号： G11B7/126 ,  H01S5/0683 ,  G11B7/0908 ,  G11B7/14 ,  H01S5/4025

    摘要： A method for controlling intensities of a plurality of laser beams respectively emitted on a track of an optical disk by a plurality of laser diodes according to the present invention includes a step of performing focusing servo control for focusing one of the plurality of laser beams emitted by one of the plurality of laser diodes onto the track, and concurrently controlling an intensity of the laser beam emitted by each of plurality of laser diodes to be within a predetermined range by comparing a signal which is in accordance with an intensity of the laser beam emitted by that laser beam with a reference signal. A period during which the one of the plurality of laser diodes used for the focusing does not emit the one laser beam is shorter than a response time of the focus servo control.

    摘要翻译： 根据本发明的用于控制由多个激光二极管分别发射在光盘的轨道上的多个激光束的强度的方法包括以下步骤：执行聚焦伺服控制以聚焦由 将多个激光二极管中的一个放射到轨道上，并且通过比较与发射的激光束的强度相对应的信号，同时将由多个激光二极管中的每一个发射的激光束的强度控制在预定范围内 该激光束具有参考信号。 用于聚焦的多个激光二极管中的一个不发射一个激光束的周期比聚焦伺服控制的响应时间短。