公开(公告)号：US5675569A

公开(公告)日：1997-10-07

申请号：US567429

申请日：1995-12-05

申请人： Takeshi Yamaguchi ,  Tsuneo Fujiwara ,  Hiroshige Hirajima

发明人： Takeshi Yamaguchi ,  Tsuneo Fujiwara ,  Hiroshige Hirajima

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B11/105 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B20/22

CPC分类号： G11B20/10101 ,  G11B20/10009 ,  G11B20/22 ,  G11B11/10515 ,  G11B7/005

摘要： A recorded signal reproduction circuit in an optical disc information reading and recording apparatus converts a recorded signal recovered from an optical disc to PR (1, 2, 1) characteristics through a equalizer circuit, digitizes it through an A/D converter and at the same time also generates a clock signal synchronized in phase with the equalizer circuit output signal by using a binary edcoder circuit and a PLL circuit. This clock signal is then provided to an A/D converter as the sampling clock. The A/D converter output signal is then decoded to the original channel bit stream based on the clock signal. Because the equalizer circuit output signal is provided to both the binary encoder/PLL circuit and the A/D converter together, additional circuity for converting signals into a binary series of pulses is unnecessary and reduction of circuit scale is possible. Moreover, in case of a change-over in the frequency characteristics of the equalizer circuit, due to a change in recording and reproduction frequency, the change-over will not affect the phase relationship between an input signal to the A/D converter and a sampling clock. In addition, it becomes simple to adjust this phase relation.

摘要翻译： 光盘信息读取和记录装置中的记录信号再现电路通过均衡器电路将从光盘恢复的记录信号转换为PR（1,2,1）特性，通过A / D转换器将其数字化 时间还通过使用二进制编码器电路和PLL电路产生与均衡器电路输出信号同相的时钟信号。 该时钟信号随后作为采样时钟提供给A / D转换器。 然后，A / D转换器输出信号基于时钟信号被解码为原始通道位流。 由于均衡器电路输出信号同时提供给二进制编码器/ PLL电路和A / D转换器，所以用于将信号转换成二进制脉冲串的附加电路是不必要的，并且可以减小电路规模。 此外，在均衡器电路的频率特性的转换的情况下，由于记录和再现频率的变化，转换不会影响到A / D转换器的输入信号与A / D转换器之间的相位关系 采样时钟。 此外，调整该相位关系变得简单。

公开(公告)号：US5548570A

公开(公告)日：1996-08-20

申请号：US547313

申请日：1995-10-24

申请人： Hiroshige Hirajima ,  Takeshi Yamaguchi ,  Hiroshi Fuji

发明人： Hiroshige Hirajima ,  Takeshi Yamaguchi ,  Hiroshi Fuji

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B20/10 ,  G11B20/14 ,  G11B27/30 ,  H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H04B3/04 ,  H04L25/03 ,  H04L25/06

CPC分类号： G11B20/10212 ,  G11B20/1403 ,  G11B27/3027

摘要： An information reproducing circuit for reproducing digital information from a signal read by scanning an optical disk comprises an HPF 1 inputting the read signal and removing a low-frequency component from the input signal for outputting the same, an adder 2 inputting the signal outputted from the HPF 1 and adding a feedback signal having an amplitude matching with half that of the input signal to the input signal for outputting the same, a comparator 3 inputting the signal outputted from the adder 2 and converting the input signal to a binarized signal through a threshold value signal for outputting the binarized signal, a compensation circuit 5 inputting the binarized signal outputted from the comparator 3 and outputting the input signal while compensating the same through a compensation signal for compensating the low-frequency component of the read signal, and an LPF 6 inputting the signal outputted from the circuit 5 and removing a high-frequency component from the input signal for supplying the same to the adder 2 as the feedback signal.

摘要翻译： 用于从通过扫描光盘读取的信号再现数字信息的信息再现电路包括输入读取信号的HPF 1和从输入信号中输出低频分量，输入从 HPF 1，并将具有与输入信号的一半幅度匹配的幅度匹配的反馈信号输入到输出信号以输出;比较器3，输入从加法器2输出的信号，并通过阈值将输入信号转换为二值化信号 输出二值化信号的值信号;补偿电路5，输入从比较器3输出的二值化信号，并通过用于补偿读出信号的低频分量的补偿信号补偿该输入信号并输出​​该输入信号;以及LPF6 输入从电路5输出的信号并从输入信号f去除高频分量 或将其提供给加法器2作为反馈信号。

公开(公告)号：US5107472A

公开(公告)日：1992-04-21

申请号：US376412

申请日：1989-07-05

申请人： Tsuneo Fujiwara ,  Masaru Nomura ,  Toshihisa Deguchi ,  Kunio Kojima ,  Takeshi Yamaguchi

发明人： Tsuneo Fujiwara ,  Masaru Nomura ,  Toshihisa Deguchi ,  Kunio Kojima ,  Takeshi Yamaguchi

IPC分类号： G11B7/0033 ,  G11B7/085 ,  G11B7/14 ,  G11B11/105

CPC分类号： G11B11/10563 ,  G11B7/0033 ,  G11B7/085 ,  G11B7/14

摘要： A track access operation system for an optical recording and reproducing apparatus using a medium having a plurality of guide grooves and ID sections utilized for identifying a particular guide groove. The intensity of reflected light and transmitted light from each of a plurality of light beams projected on the recording medium is monitored for determining the location of the beam on the disk. The system is designed such that at least either the plurality of light beams or the plurality of ID sections of the guide grooves are so arranged such that more than half of the light beams or more than half of the ID sections do not overlap in a parallel direction along the guide grooves whereby the number of light beams simultaneously projected on the ID sections is limited to less than half of the total number of light beams projected on the recording medium. Accordingly, even when the collection of light beams move in a perpendicular direction to the guide grooves, the number of pulses in the pulse signal is not influenced by the ID signals but coincident with the number of the guiding grooves through which the light beams have actually passed. With use of the optical memory system having such an arrangement, an accurate measurement of light beam movement is obtained resulting in high accuracy of access operations.

公开(公告)号：US5048004A

公开(公告)日：1991-09-10

申请号：US340454

申请日：1989-04-19

申请人： Toshihisa Deguchi ,  Takeshi Yamaguchi ,  Shigemi Maeda ,  Takashi Iwaki ,  Tsuneo Fujiwara ,  Shigeo Terashima

发明人： Toshihisa Deguchi ,  Takeshi Yamaguchi ,  Shigemi Maeda ,  Takashi Iwaki ,  Tsuneo Fujiwara ,  Shigeo Terashima

IPC分类号： G11B20/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/013 ,  G11B20/18 ,  G11B27/00

CPC分类号： G11B20/1883 ,  G11B7/0045 ,  G11B7/013 ,  G11B2220/20

摘要： A recording and reproducing device providing control data recording area on erasable type optical recording medium wherein control data are recorded thereof, characterized in that there is provided a control data recording area forming device for forming control data recording areas having more than two control recording blocks which in turn have more than one recording unit. The control data can be recorded independently. A control data updating device records new control data in the control data recording blocks which were the ones not previously being updated with control data, thereby allowing this device to minimize damage caused by electrical power failure.

公开(公告)号：US5166838A

公开(公告)日：1992-11-24

申请号：US498710

申请日：1990-03-26

申请人： Hiroshi Fuji ,  Takeshi Yamaguchi ,  Kunio Kojima ,  Toshihisa Deguchi ,  Shigeo Terashima ,  Tsuneo Fujiwara

发明人： Hiroshi Fuji ,  Takeshi Yamaguchi ,  Kunio Kojima ,  Toshihisa Deguchi ,  Shigeo Terashima ,  Tsuneo Fujiwara

IPC分类号： G11B20/10

CPC分类号： G11B20/10009

摘要： A digital signal reproduction apparatus includes a first differential circuit for differentiating a reproduction signal reproduced from a recording medium. This differential circuit outputs a first order differential signal. A second differential circuit differentiates the first order differential signal of the reproduction signal and outputs a second order differential signal. A comparator compares the second order differential signal with a predetermined level to produce a window signal. A peak detecting circuit detects zero-cross points in the first order differential signal and outputs a peak detecting signal. A gate gates the peak detecting signal with the window signal to output a reproduction data signal.

摘要翻译： 数字信号再现装置包括用于区分从记录介质再现的再现信号的第一差分电路。 该差分电路输出一阶差分信号。 第二差分电路区分再现信号的一阶差分信号并输出​​二阶微分信号。 比较器将二阶差分信号与预定电平进行比较以产生窗口信号。 峰值检测电路检测一阶差分信号中的零交叉点，并输出峰值检测信号。 门通过窗口信号对峰值检测信号进行门极输出再现数据信号。

公开(公告)号：US5010540A

公开(公告)日：1991-04-23

申请号：US225892

申请日：1988-07-29

申请人： Hiroshi Fuji ,  Tsuneo Fujiwara ,  Takashi Iwaki ,  Tomiyuki Numata ,  Kentaroh Tsuji ,  Shigemi Maeda ,  Takeshi Yamaguchi ,  Kunio Kojima ,  Toshihisa Deguchi ,  Shigeo Terashima

发明人： Hiroshi Fuji ,  Tsuneo Fujiwara ,  Takashi Iwaki ,  Tomiyuki Numata ,  Kentaroh Tsuji ,  Shigemi Maeda ,  Takeshi Yamaguchi ,  Kunio Kojima ,  Toshihisa Deguchi ,  Shigeo Terashima

IPC分类号： G11B19/247

CPC分类号： G11B19/247

摘要： An apparatus for recording and reproducing information on and from an optical disk includes a first control for producing a first control signal for controlling the rotational speed of a rotational driving apparatus, on the basis of the detected radial position; a judging apparatus which judges whether or not the reproduced signals are reproduced from a recorded region of the optical disk; a second control for producing a second control signal for controlling the rotational speed of the rotational driving apparatus, on the basis of the signals reproduced from the disk; and a switch apparatus which switches the circuit so that the rotational driving apparatus is controlled by the first control signal when the reproduced signals are not reproduced from a non-recorded region, and controlled by the second control signal when the reproduced signals are reproduced from a recorded region.

公开(公告)号：US4954903A

公开(公告)日：1990-09-04

申请号：US245771

申请日：1988-09-19

申请人： Hiroshi Fuji ,  Takeshi Yamaguchi ,  Kunio Kojima ,  Toshihisa Deguchi ,  Shigeo Terashima ,  Tsuneo Fujiwara

发明人： Hiroshi Fuji ,  Takeshi Yamaguchi ,  Kunio Kojima ,  Toshihisa Deguchi ,  Shigeo Terashima ,  Tsuneo Fujiwara

IPC分类号： G11B20/10

CPC分类号： G11B20/10009

摘要： A digital signal reproduction apparatus includes a first differential circuit for differentiating a reproduction signal reproduced from a recording medium. This differential circuit outputs a first order differential signal and second differential circuit differentiates the first order differential signal of the reproduction signal and outputs a second order differential signal. A comparator compares the second order differential signal with a predetermined level to produce a window signal. A peak detecting circuit detects zero-cross points in the first order differential signal and outputs a peak detecting signal. A gate gates the peak detecting signal with the window signal to output a reproduction data signal.

公开(公告)号：US11159030B2

公开(公告)日：2021-10-26

申请号：US15911308

申请日：2018-03-05

申请人： Takeshi Yamaguchi

发明人： Takeshi Yamaguchi

IPC分类号： H02J7/00 ,  H01M10/02 ,  H01M10/42 ,  H01M10/48 ,  H01M50/20 ,  H01M50/209

摘要： A battery pack includes a secondary battery, a secondary battery protecting integrated circuit configured to protect the secondary battery, at least one sensor configured to output a fault signal indicating sensing of a fault in the battery pack or an electronic apparatus including the battery pack, a detecting circuit configured to output a fault detection signal indicating a detection of the fault signal, a delay circuit configured to output a pulse delaying from the fault detection signal, and a counter configured to count a number of generating the pulse, the counter having at least N bits (N is an integer greater than 1), wherein the counter stops an operation until a count of 2(N-1).

公开(公告)号：US08842335B2

公开(公告)日：2014-09-23

申请号：US12831653

申请日：2010-07-07

申请人： Takeshi Yamaguchi

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/60

CPC分类号： H04N1/6088 ,  H04N1/6097

摘要： Disclosed is an information processing apparatus including: a control section to obtain output condition information to show an output condition when a color chart is output, to obtain colorimetric data obtained by measuring the color chart, to create a color conversion profile based on the obtained colorimetric data, and to embed the output condition information in the created color conversion profile according to an order determined in advance.

摘要翻译： 公开了一种信息处理设备，包括：控制部分，用于获得输出条件信息，以便在输出彩色图表时显示输出条件，以获得通过测量色彩图得到的色度数据，以便根据获得的色度产生颜色转换曲线 数据，并且根据预先确定的顺序将输出条件信息嵌入到所创建的颜色转换简档中。

公开(公告)号：US08797614B2

公开(公告)日：2014-08-05

申请号：US13713195

申请日：2012-12-13

申请人： Takeshi Yamaguchi

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/60

CPC分类号： H04N1/60 ,  H04N1/6019

摘要： Disclosed are a device, a method, and a storage medium to create a color conversion table. According to one implementation, a color conversion table creating device includes, a color material amount limiting processing section; a first color conversion processing section; a second color conversion processing section; a combining section; a color material amount limiting inverse conversion processing section; and an output value determining section. The color material amount limiting processing section performs color material amount limiting of an input value in the color conversion table. The color material limiting inverse conversion processing section performs inverse conversion of the color material amount limiting after color conversion and combining the CMYK components. The output value determining section sets the inverted CMYK color components as an output value in the color conversion table.

摘要翻译： 公开了一种用于创建颜色转换表的设备，方法和存储介质。 根据一个实施方案，一种颜色转换表创建装置包括：色材量限制处理部分; 第一颜色转换处理部; 第二颜色转换处理部; 组合部分; 色材量限制逆变换处理部; 和输出值确定部分。 颜色材料量限制处理部分对颜色转换表中的输入值进行颜色量限制。 色材限制逆变换处理部对颜色转换后的色材量限制进行逆变换，并组合CMYK成分。 输出值确定部分将反转的CMYK颜色分量设置为颜色转换表中的输出值。