公开(公告)号：US4803677A

公开(公告)日：1989-02-07

申请号：US873407

申请日：1986-06-12

申请人： Hirohisa Yamaguchi ,  Horoshi Usami ,  Tadao Nagai ,  Akira Mashimo

发明人： Hirohisa Yamaguchi ,  Horoshi Usami ,  Tadao Nagai ,  Akira Mashimo

IPC分类号： G11B7/09 ,  G11B7/007 ,  G11B7/095

CPC分类号： G11B7/0909 ,  G11B7/0903 ,  G11B7/0938

摘要： A disc comprises a recording surface which is divided into a plurality of equiangular sectoral regions and a guide track formed on the recording surface. Each track turn of the guide track is constituted by a row of pits formed in every other equiangular sectoral regions, and the pit is only formed in one of two mutually adjacent track turns of the guide track in each equiangular sectoral region so that the pits are formed in every other track turns in a radial direction of the disc in each equiangular sectoral region. An apparatus for playing the disc comprises a circuit for producing a switching pulse signal having a period dependent on a period of the pits of the guide track based on signals which are reproduced from the two mutually adjacent track turns by sub light beams, a circuit for alternately inverting a polarity of signals which are reproduced from the two mutually adjacent track turns by a main light beam for every one half period of the switching pulse signal and for generating a tracking error signal, a tracking device, and a device for recording and reproducing an information signal on and from an intermediate part of the disc between the two mutually adjacent track turns.

摘要翻译： 盘包括记录表面，该记录表面被分成多个等角扇形区域和形成在记录表面上的导轨。 导轨的每个轨道转弯由形成在每个其他等角部分区域中的一排凹坑构成，并且凹坑仅形成在每个等角扇形区域中的导轨的两个相互相邻的轨道匝之一中，使得凹坑 在每个其他轨道中形成的每个等角部分区域中的圆盘的径向方向。 用于播放光盘的装置包括：电路，用于产生具有取决于导轨的凹坑的周期的周期的切换脉冲信号，所述周期基于通过副光束从两个相互相邻的轨道匝再现的信号， 在切换脉冲信号的每半个周期，通过主光束交替地反转从两个相互相邻的轨道匝再现的信号的极性，并产生跟踪误差信号，跟踪装置和用于记录和再现的装置 在两个相互相邻的轨道匝之间的来自盘的中间部分的信息信号。

公开(公告)号：US4754339A

公开(公告)日：1988-06-28

申请号：US929605

申请日：1986-11-10

申请人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

发明人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

IPC分类号： G11B20/12 ,  G11B7/09 ,  G11B27/19 ,  G11B27/24 ,  G11B27/32 ,  H04N9/82 ,  H04N9/83 ,  H04N9/79 ,  G11B7/013 ,  H04N5/85

CPC分类号： H04N9/8205 ,  G11B27/19 ,  G11B27/24 ,  G11B27/322 ,  G11B7/0938 ,  H04N9/8222 ,  H04N9/83 ,  G11B2220/20

摘要： An information recording disc comprises a guide track, an address signal recording portion arranged in each track turn of the guide track and pre-recorded with an address signal, and a pseudo address signal recording portion arranged in each track turn of the guide track adjacent a corresponding address signal recording portion provided in a track turn of the guide track adjacent thereto. The recording length of the pseudo address signal recording portion is selected approximately equal to the recording length of the corresponding address signal recording portion.

摘要翻译： 信息记录盘包括导轨，布置在导轨的每个轨道转弯中并预先记录有地址信号的地址信号记录部分，以及布置在导轨的每个轨道转弯中的伪地址信号记录部分， 相应的地址信号记录部分设置在与其相邻的导轨的轨道转弯中。 选择伪地址信号记录部分的记录长度大约等于相应地址信号记录部分的记录长度。

公开(公告)号：US4864423A

公开(公告)日：1989-09-05

申请号：US272769

申请日：1988-11-17

申请人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

发明人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

IPC分类号： G11B27/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  H04N5/92 ,  H04N9/835

CPC分类号： H04N9/8355 ,  G11B7/004 ,  G11B7/0938 ,  H04N5/9201

摘要： An information recording disc has a control signal such as an address signal pre-recorded on a guide track which is pre-formed on the information recording disc at a position different from a track position where an information signal is to be recorded. An information signal recording apparatus for recording the information signal on such an information recording dics controls a rotation frequency of the information recording disc to a constant rotation frequency by locking a horizontal synchronizing signal within a composite video signal to edges of pulses reproduced from the guide track, and the information signal is recorded on the information recording disc so that a recording interval of the control signal is positioned within a vertical blanking period of the information signal at least including the composite video signal.

摘要翻译： 信息记录盘具有诸如预先记录在导轨上的地址信号的控制信号，该导轨在信息记录盘上预先形成在与要记录信息信号的轨道位置不同的位置处。 用于在这种信息记录装置上记录信息信号的信息信号记录装置通过将复合视频信号内的水平同步信号锁定在从导轨再现的脉冲的边缘上来控制信息记录盘的旋转频率到恒定的旋转频率 并且信息信号被记录在信息记录盘上，使得控制信号的记录间隔位于至少包括复合视频信号的信息信号的垂直消隐期内。

公开(公告)号：US4802159A

公开(公告)日：1989-01-31

申请号：US917188

申请日：1986-10-09

申请人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

发明人： Tadao Nagai ,  Hirohisa Yamaguchi ,  Akira Mashimo

IPC分类号： G11B27/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  H04N5/92 ,  H04N9/835 ,  G11B7/013 ,  H04N5/84 ,  H04N9/89

CPC分类号： H04N9/8355 ,  G11B7/004 ,  G11B7/0938 ,  H04N5/9201

摘要： An information recording disc has a control signal such as an address signal pre-recorded on a guide track which is pre-formed on the information recording disc at a position different from a track position where an information signal is to be recorded. An information signal recording apparatus for recording the information signal on such an information recording disc controls a rotation frequency of the information recording disc to a constant rotation frequency by locking a horizontal synchronizing signal within a composite video signal to edges of pulses reproduced from the guide track, and the information signal is recorded on the information recording disc so that a recording interval of the control signal is positioned within a vertical blanking period of the information signal at least including the composite video signal.

摘要翻译： 信息记录盘具有诸如预先记录在导轨上的地址信号的控制信号，该导轨在信息记录盘上预先形成在与要记录信息信号的轨道位置不同的位置处。 用于在这种信息记录盘上记录信息信号的信息信号记录装置通过将复合视频信号内的水平同步信号锁定在从导轨再现的脉冲的边缘上来将信息记录盘的旋转频率控制在恒定的旋转频率 并且信息信号被记录在信息记录盘上，使得控制信号的记录间隔位于至少包括复合视频信号的信息信号的垂直消隐期内。

公开(公告)号：US4841504A

公开(公告)日：1989-06-20

申请号：US73979

申请日：1987-07-14

申请人： Hirohisa Yamaguchi ,  Akira Mashimo

发明人： Hirohisa Yamaguchi ,  Akira Mashimo

IPC分类号： G11B20/02 ,  G11B19/02 ,  G11B27/026 ,  G11B27/10 ,  G11B27/22 ,  G11B27/32 ,  G11B27/36

CPC分类号： G11B19/02 ,  G11B27/026 ,  G11B27/22 ,  G11B27/322 ,  G11B27/36 ,  G11B2220/20

摘要： A method and apparatus for assembling an information signal on a rotary recording medium comprising a pre-recorded track recorded with pre-recorded information signals and an unrecorded track not recorded with information signals by use of a light beam in which an information signal to be newly recorded on the rotary recording medium is recorded continuously from the pre-recorded information signal already recorded on the pre-recorded track. The apparatus by use of a light beam searches for a pre-recorded track turn which is a portion of the pre-recorded track immediately preceding the unrecorded track and continuously reproduces the information signal from the searched pre-recorded track turn as it waits for a command signal commanding the recording of the information signal to be recorded. Responsive to the command signal, the apparatus terminates the repetition of the reproducing operation of the searched track turn and commences the recording on the unrecorded track turn following the searched pre-recorded track turn.

摘要翻译： 一种用于在旋转记录介质上组装信息信号的方法和装置，包括利用其中新信息信号的光束记录有预先记录的信息信号的预记录磁道和未被记录有信息信号的未记录磁道 从已经记录在预先记录的轨道上的预先记录的信息信号连续地记录在旋转记录介质上。 通过使用光束的装置搜索预先记录的轨道转弯，其是紧接在未记录轨道之前的预先记录的轨道的一部分，并且在等待的情况下从所搜索的预先记录的轨道转弯中连续再现信息信号 指令要记录的信息信号的记录。 响应于命令信号，设备终止重复所搜索的轨道转弯的再现操作，并且在搜索到的预先记录的轨道转弯之后开始在未记录的轨道上的记录。

公开(公告)号：US4757488A

公开(公告)日：1988-07-12

申请号：US929597

申请日：1986-11-10

申请人： Tadao Nagai ,  Hirohisa Yamaguchi

发明人： Tadao Nagai ,  Hirohisa Yamaguchi

IPC分类号： H02P29/00 ,  G11B19/247 ,  G11B19/28 ,  G11B19/24

CPC分类号： G11B19/247

摘要： A rotation control apparatus for a CLV system disc sets an initial value based on an address signal reproduced from the CLV system disc and carries out a rotation control by use of the initial value, so that it is possible to carry out the rotation control even with respect to a CLV system disc on which an information signal is only recorded up to an intermediate position within a program region of the disc. An information signal is newly recordable in conformance with the CLV system from a position in a vicinity of the intermediate position where the previous recording had been discontinued.

摘要翻译： 用于CLV系统盘的旋转控制装置基于从CLV系统盘再现的地址信号设置初始值，并且通过使用初始值来执行旋转控制，使得即使使用初始值也可以执行旋转控制 相对于信息信号仅记录在盘的程序区域内的中间位置的CLV系统盘。 信息信号可以从先前记录已中断的中间位置附近的位置与CLV系统重新记录。

公开(公告)号：US4958234A

公开(公告)日：1990-09-18

申请号：US259152

申请日：1988-10-18

申请人： Hirohisa Yamaguchi ,  Akira Mashimo

发明人： Hirohisa Yamaguchi ,  Akira Mashimo

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B20/06 ,  H04N9/79

CPC分类号： G11B7/004 ,  H04N9/7912

摘要： A distortion eliminating circuit for eliminating a harmonic distortion from an input frequency modulated luminance signal comprises a comparator for producing a series of output pulses responsive to the input frequency modulated luminance signal by comparing the level of the frequency modulated luminance signal with a predetermined level, a filtering circuit for extracting a d.c. component from the series of output pulses by filtering out oscillating components from said output pulses, a detecting circuit for extracting a d.c. distortion component corresponding to the harmonic distortion in the input frequency modulated luminance signal by comparing the level of the d.c. component by a reference level, and a level adjusting circuit for adjusting the level of the input frequency modulated luminance signal by adding or subtracting the d.c. distortion component to the input frequency modulated luminance signal and for supplying the input frequency modulated luminance signal having a level now thus adjusted to the comparator.

摘要翻译： 用于从输入调频亮度信号中消除谐波失真的失真消除电路包括：比较器，用于通过将调频亮度信号的电平与预定电平进行比较来产生响应输入调频亮度信号的一系列输出脉冲; 用于提取直流的滤波电路 通过滤出来自所述输出脉冲的振荡分量的一系列输出脉冲的分量，用于提取直流电压的检测电路。 通过比较直流电平的水平，输入调制亮度信号中的谐波失真对应的失真分量。 分量乘以参考电平;以及电平调整电路，用于通过加或减去直流电平来调节输入调频亮度信号的电平。 失真分量到输入调制亮度信号，并用于提供具有如此调整到比较器的电平的输入调频亮度信号。

公开(公告)号：US07099270B2

公开(公告)日：2006-08-29

申请号：US10162891

申请日：2002-06-06

申请人： Hirohisa Yamaguchi

发明人： Hirohisa Yamaguchi

IPC分类号： H04J11/00

CPC分类号： H04L25/03159 ,  H04L25/0236 ,  H04L2025/03414

摘要： A multi-path equalization system for orthogonal frequency division multiplexing communication (OFDM) system includes a first estimator for estimating the channel characteristic using pilot signal. A divider is coupled to the estimator for dividing each sub-carrier with the channel characteristic to get the equalization to the data signal. A de-mapper uses the phase and amplitude correction of the channel estimate to recover the data signals. An improved channel estimation is provided by a repeat channel estimation feedback loop that includes the de-mapper a multiplier, an inverse fast Fourier transform (IFFT), a low pass filter and a fast Fourier transform (FFT). The improved channel estimation is obtained by multiplying at the multiplier the conjugate of the de-mapped data to the input sub-carriers and applying inverse FFT, low pass filtering and FFT to get the new channel estimate. Each sub-carrier is divided with new channel characteristic to get new equalization to the data signal. The channel estimation is repeated until there is convergence. The output is provided after the de-mapper. In the case of channel decoding to improve performance a Viterbi decoder and convolutional encoder is coupled in loop between the de-mapper and the multiplier.

公开(公告)号：US06947952B1

公开(公告)日：2005-09-20

申请号：US09569242

申请日：2000-05-11

申请人： Michael Dean Welch ,  Hirohisa Yamaguchi

发明人： Michael Dean Welch ,  Hirohisa Yamaguchi

IPC分类号： G06F17/30

CPC分类号： G06F17/30595 ,  G06F17/30607 ,  Y10S707/99938 ,  Y10S707/99945 ,  Y10S707/99948

摘要： A method in a computer system executing a client application and an OODBMS and an RDBMS software, which system has a storage medium accessible by the RDBMS software and the OODBMS software being accessible by the client application. The method generates unique object identifiers in a data abstraction layer disposed between the OODBMS and the RDBMS software in response to a parent thread created by the client application. The method includes the steps of creating a child thread that has access to the RDBMS software, which child thread is used exclusively for generating object identifier numbers and for returning the same to the parent thread. A unique object identifier table is created, which is maintained by the child thread. In response to a request by the parent thread for a unique object identifier, the child thread generates a finite number of the unique object identifiers and communicates their values to the parent thread. After this, a recording is made in the table of the fact that a finite number of unique object identifiers have been generated.

摘要翻译： 执行客户端应用程序的计算机系统中的方法以及OODBMS和RDBMS软件，该系统具有可由RDBMS软件访问的存储介质，以及可由客户端应用访问的OODBMS软件。 该方法响应于由客户端应用程序创建的父线程，在OODBMS和RDBMS软件之间的数据抽象层中生成唯一的对象标识符。 该方法包括以下步骤：创建可访问RDBMS软件的子线程，该子线程专门用于生成对象标识符号码并将其返回给父线程。 创建唯一的对象标识符表，由子线程维护。 响应于父线程对唯一对象标识符的请求，子线程生成有限数量的唯一对象标识符，并将其值传递给父线程。 之后，在表格中记录了已经生成有限数量的唯一对象标识符的事实。

公开(公告)号：US06687376B1

公开(公告)日：2004-02-03

申请号：US09222445

申请日：1998-12-29

申请人： Hirohisa Yamaguchi

发明人： Hirohisa Yamaguchi

IPC分类号： H04L928

CPC分类号： H04J13/10 ,  H04J13/0022

摘要： A circuit is designed with a first register circuit (364) arranged to store a state matrix. A memory circuit (710) is arranged to store a plurality of addressable matrices. A control circuit (700) is coupled to receive a delay value and a clock signal. The control circuit is arranged to address a selected matrix from the plurality of addressable matrices in response to the delay value and the clock signal. A backward register circuit (420) is coupled (712) to receive the selected matrix. The backward register circuit is arranged to produce a plurality of shifted matrices from the selected matrix in response to the clock signal. A logic circuit (330-354) is coupled to receive the state matrix, the selected matrix and the plurality of shifted matrices. The logic circuit produces a logical combination of the state matrix and each of the selected matrix and the plurality of shifted matrices.

摘要翻译： 电路被设计为具有布置成存储状态矩阵的第一寄存器电路（364）。 存储电路（710）被布置成存储多个可寻址矩阵。 控制电路（700）被耦合以接收延迟值和时钟信号。 控制电路被布置成响应于延迟值和时钟信号从多个可寻址矩阵中寻址选定的矩阵。 反向寄存器电路（420）被耦合（712）以接收所选择的矩阵。 反向寄存器电路被布置为响应于时钟信号从所选矩阵产生多个移位矩阵。 逻辑电路（330-354）被耦合以接收状态矩阵，所选矩阵和多个移位矩阵。 逻辑电路产生状态矩阵与所选矩阵和多个移位矩阵中的每一个的逻辑组合。