公开(公告)号：US08130838B2

公开(公告)日：2012-03-06

申请号：US11909166

申请日：2006-03-22

申请人： Hideki Fukuda ,  Hiroki Inagaki ,  Kazuhiko Kouno ,  Makoto Kawaharada

发明人： Hideki Fukuda ,  Hiroki Inagaki ,  Kazuhiko Kouno ,  Makoto Kawaharada

IPC分类号： H04N7/12

CPC分类号： H04N19/105 ,  H04N19/109 ,  H04N19/112 ,  H04N19/126 ,  H04N19/147 ,  H04N19/149 ,  H04N19/159 ,  H04N19/19 ,  H04N19/196 ,  H04N19/198 ,  H04N19/61

摘要： To encode a moving picture in real time in as high quality as possible, no matter whether a target bit rate for encoding the moving picture is high or low.An encoder performs motion compensated inter-picture predictive coding on moving picture data in a selected one of prediction modes. The encoder includes: a detecting section for detecting an accumulated error and a motion vector of a block, included in a picture to be encoded, by reference to a block in a reference picture to be used for each prediction mode; an estimating section for calculating an estimated value by adding a product of each accumulated error and a predetermined first coefficient and that of a predicted vector associated with each motion vector and a second coefficient; a determining section for selecting one of the prediction modes according to the estimated value; a coefficient updating section for updating a proportionality factor using at least a quantization scale used when the block to be encoded is quantized; and an encoding section for encoding the data of the block to be encoded in the prediction mode selected.

摘要翻译： 为了以尽可能高的质量实时对运动图像进行编码，无论用于编码运动图像的目标比特率是高还是低。 编码器对所选择的预测模式中的运动图像数据执行运动补偿的图像间预测编码。 编码器包括：检测部分，用于通过参考要用于每个预测模式的参考图像中的块来检测包括在待编码的图像中的块的累积误差和运动矢量; 估计部分，用于通过将每个累积误差和预定第一系数的乘积与与每个运动矢量相关联的预测矢量与第二系数的乘积相加来计算估计值; 确定部分，用于根据估计值选择预测模式之一; 系数更新部分，用于当量化要被编码的块时使用至少一个量化尺度来更新比例因子; 以及编码部分，用于对所选择的预测模式中要编码的块的数据进行编码。

公开(公告)号：US20090052526A1

公开(公告)日：2009-02-26

申请号：US11909166

申请日：2006-03-22

申请人： Hideki Fukuda ,  Hiroki Inagaki ,  Kazuhiko Kouno ,  Makoto Kawaharada

发明人： Hideki Fukuda ,  Hiroki Inagaki ,  Kazuhiko Kouno ,  Makoto Kawaharada

IPC分类号： H04N7/26

CPC分类号： H04N19/105 ,  H04N19/109 ,  H04N19/112 ,  H04N19/126 ,  H04N19/147 ,  H04N19/149 ,  H04N19/159 ,  H04N19/19 ,  H04N19/196 ,  H04N19/198 ,  H04N19/61

摘要： To encode a moving picture in real time in as high quality as possible, no matter whether a target bit rate for encoding the moving picture is high or low.An encoder performs motion compensated inter-picture predictive coding on moving picture data in a selected one of prediction modes. The encoder includes: a detecting section for detecting an accumulated error and a motion vector of a block, included in a picture to be encoded, by reference to a block in a reference picture to be used for each prediction mode; an estimating section for calculating an estimated value by adding a product of each accumulated error and a predetermined first coefficient and that of a predicted vector associated with each motion vector and a second coefficient; a determining section for selecting one of the prediction modes according to the estimated value; a coefficient updating section for updating a proportionality factor using at least a quantization scale used when the block to be encoded is quantized; and an encoding section for encoding the data of the block to be encoded in the prediction mode selected.

摘要翻译： 为了以尽可能高的质量实时对运动图像进行编码，无论用于编码运动图像的目标比特率是高还是低。 编码器对所选择的预测模式中的运动图像数据执行运动补偿的图像间预测编码。 编码器包括：检测部分，用于通过参考要用于每个预测模式的参考图像中的块来检测包括在待编码的图像中的块的累积误差和运动矢量; 估计部分，用于通过将每个累积误差和预定第一系数的乘积与与每个运动矢量相关联的预测矢量与第二系数的乘积相加来计算估计值; 确定部分，用于根据估计值选择预测模式之一; 系数更新部分，用于当量化要被编码的块时使用至少一个量化尺度来更新比例因子; 以及编码部分，用于对所选择的预测模式中要编码的块的数据进行编码。

公开(公告)号：US06654321B2

公开(公告)日：2003-11-25

申请号：US09836932

申请日：2001-04-18

申请人： Takanori Okada ,  Shuichi Yoshida ,  Masaharu Imura ,  Kiyoshi Masaki ,  Kazuhiro Mihara ,  Tsutomu Kai ,  Noritaka Akagi ,  Masanori Harui ,  Kazuhiko Kouno

发明人： Takanori Okada ,  Shuichi Yoshida ,  Masaharu Imura ,  Kiyoshi Masaki ,  Kazuhiro Mihara ,  Tsutomu Kai ,  Noritaka Akagi ,  Masanori Harui ,  Kazuhiko Kouno

IPC分类号： G11B700

CPC分类号： G11B7/08529 ,  G11B7/08582

摘要： In a method of the present invention for controlling stepping motor, the stepping motor driving current is increased or reduced at a fixed inclination in proportion to the time to control the stepping motor effectively, and, a stepping motor driving current pattern is changed by ¼ cycle or more to synchronize the state of excitation between the stepping motor driving means and the stepping motor to control the pick-up very accurately. In addition, the disk apparatus of the present invention, which uses a stepping motor is provided with a pulse rate pattern variable means, a pulse rate change proportion measuring means, and a driving voltage variable means, and when the pulse rate and the pulse rate change proportion are low, the driving voltage amplitude is lowered to reduce surplus torque generation in the stepping motor.

摘要翻译： 在用于控制步进电动机的本发明的方法中，与有效控制步进电机的时间成比例地，步进电动机驱动电流以固定的倾斜度增加或减小，并且步进电机驱动电流模式改变¼周期 以上，以使步进电动机驱动装置和步进电机之间的激励状态同步，以非常精确地控制拾取。 另外，本发明的采用步进电动机的盘装置具有脉率模式可变装置，脉搏变化比例测量装置和驱动电压可变装置，当脉搏率和脉率 变化比例低，驱动电压振幅降低，以减少步进电机中的过剩转矩产生。

公开(公告)号：US06249495B1

公开(公告)日：2001-06-19

申请号：US09031281

申请日：1998-02-26

申请人： Takanori Okada ,  Shuichi Yoshida ,  Masaharu Imura ,  Kiyoshi Masaki ,  Kazuhiro Mihara ,  Tsutomu Kai ,  Noritaka Akagi ,  Masanori Harui ,  Kazuhiko Kouno

发明人： Takanori Okada ,  Shuichi Yoshida ,  Masaharu Imura ,  Kiyoshi Masaki ,  Kazuhiro Mihara ,  Tsutomu Kai ,  Noritaka Akagi ,  Masanori Harui ,  Kazuhiko Kouno

IPC分类号： G11B700

CPC分类号： G11B7/08529 ,  G11B7/08582

摘要： In a method of the present invention for controlling stepping motor, the stepping motor driving current is increased or reduced at a fixed inclination in proportion to the time to control the stepping motor effectively, and, a stepping motor driving current pattern is changed by 1/4 cycle or over to synchronize the state of excitation between the stepping motor driving means and the stepping motor to control the pick-up very accurately. In addition, the disk apparatus of the present invention, which uses a stepping motor is provided with a pulse rate pattern variable means, a pulse rate change proportion measuring means, and a driving voltage variable means, and when the pulse rate and the pulse rate change proportion are low, the driving voltage amplitude is lowered to reduce surplus torque generation in the stepping motor.

摘要翻译： 在用于控制步进电动机的本发明的方法中，步进电动机驱动电流以与控制步进电动机有效的时间成比例的固定倾斜度增大或减小，并且步进电动机驱动电流模式改变1 / 4个周期以上，以使步进电机驱动装置和步进电机之间的激励状态同步，以非常准确地控制拾取。 另外，本发明的采用步进电动机的盘装置具有脉率模式可变装置，脉搏变化比例测量装置和驱动电压可变装置，当脉搏率和脉率 变化比例低，驱动电压振幅降低，以减少步进电机中的过剩转矩产生。

公开(公告)号：US06473373B1

公开(公告)日：2002-10-29

申请号：US09492269

申请日：2000-01-27

申请人： Yasuhito Soma ,  Akira Matsubara ,  Kazuhiko Kouno

发明人： Yasuhito Soma ,  Akira Matsubara ,  Kazuhiko Kouno

IPC分类号： G11B700

CPC分类号： G11B7/0901 ,  G11B7/0941

摘要： The present invention provides an optical disc apparatus which solves a problem that the tracking control takes off when an objective lens is displaced in the tracking direction due to its weight. In this optical disc apparatus, a spot position detector 108 generates a spot position signal which indicates a position of a light spot on a light receiving element 105, and supplies the signal to a traverse loop filter 111 and a spot position loop filter 109. A controller 115 supplies an output from the spot position loop filter 109 to a tracking actuator 104, before supplying an output from the traverse loop filter 111 to a traverse motor 113, previously moves the light spot near the center of the light receiving element 105, and starts the traverse control in a state where a value of the spot position signal at starting of the traverse control is reduced.

摘要翻译： 本发明提供了一种光盘装置，其解决了当物镜由于其重量而在跟踪方向上移位时跟踪控制脱离的问题。 在该光盘装置中，光点位置检测器108产生指示光接收元件105上的光点的位置的光点位置信号，并将信号提供给横越环路滤波器111和光点位置环路滤波器109. 在将来自横动环路滤波器111的输出提供给横动电动机113之前，控制器115将光点位置环路滤波器109的输出提供给跟踪致动器104，预先移动靠近光接收元件105的中心的光点，以及 在横动控制开始时的点位置信号的值减小的状态下开始横动控制。

公开(公告)号：US20190387134A1

公开(公告)日：2019-12-19

申请号：US16332738

申请日：2018-02-26

申请人： Masayuki KOZUKA ,  Masaya YAMAMOTO ,  Yoshiichiro KASHIWAGI ,  Toshiroh NISHIO ,  Kazuhiko KOUNO ,  Hiroshi YAHATA ,  Takeshi HIROTA ,  Yoshihiro MORI

发明人： Masayuki KOZUKA ,  Masaya YAMAMOTO ,  Yoshiichiro KASHIWAGI ,  Toshiroh NISHIO ,  Kazuhiko KOUNO ,  Hiroshi YAHATA ,  Takeshi HIROTA ,  Yoshihiro MORI

IPC分类号： H04N5/20 ,  H04N5/445

摘要： A video display apparatus includes: a tone mapping processor that performs a tone mapping process of converting a luminance of a video by using conversion characteristics according to a maximum luminance of the video; and a display that displays the video that has undergone the tone mapping process. The tone mapping processor switches between a first tone mapping process of dynamically changing the conversion characteristics according to a time-depend change in the maximum luminance of the video and a second tone mapping process that is performed using constant conversion characteristics irrespective of the time-depend change in the maximum luminance of the video. When the tone mapping process used is switched from the second tone mapping process to the first tone mapping process, the conversion characteristics used is changed gradually or stepwise from the constant conversion characteristics to dynamically changing conversion characteristics over a plurality of frames.

公开(公告)号：US06925038B2

公开(公告)日：2005-08-02

申请号：US10779644

申请日：2004-02-18

申请人： Yasuhito Soma ,  Akira Matsubara ,  Kazuhiko Kouno

发明人： Yasuhito Soma ,  Akira Matsubara ,  Kazuhiko Kouno

IPC分类号： G11B7/09 ,  G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0941

摘要： The present invention provides an optical disc apparatus which solves a problem that the tracking control takes off when an objective lens is displaced in the tracking direction due to its weight. In this optical disc apparatus, a spot position detector 108 generates a spot position signal which indicates a position of a light spot on a light receiving element 105, and supplies the signal to a traverse loop filter 111 and a spot position loop filter 109. A controller 115 supplies an output from the spot position loop filter 109 to a tracking actuator 104, before supplying an output from the traverse loop filter 111 to a traverse motor 113, previously moves the light spot near the center of the light receiving element 105, and starts the traverse control in a state where a value of the spot position signal at starting of the traverse control is reduced.

摘要翻译： 本发明提供了一种光盘装置，其解决了当物镜由于其重量而在跟踪方向上移位时跟踪控制脱离的问题。 在该光盘装置中，光点位置检测器108产生指示光接收元件105上的光点的位置的光点位置信号，并将信号提供给横越环路滤波器111和光点位置环路滤波器109。 控制器115在将横向环路滤波器111的输出提供给横动电动机113之前将光点位置环路滤波器109的输出提供给跟踪致动器104，预先移动受光元件105的中心附近的光点， 并且在横动控制开始时的点位置信号的值减小的状态下开始横动控制。

公开(公告)号：US06819636B1

公开(公告)日：2004-11-16

申请号：US09700709

申请日：2000-11-24

申请人： Yasuhito Soma ,  Kazuhiko Kouno

发明人： Yasuhito Soma ,  Kazuhiko Kouno

IPC分类号： G11B700

CPC分类号： G11B7/08517

摘要： In an optical disc device that selectively implements a tracking servo and a spot position servo, a discontinuation cancellation unit is provided so that, when switching from the tracking servo to the spot position servo, and when switching in the opposite direction, the low-frequency component of the tracking drive signal and the low-frequency component of the spot position servo connect smoothly so that there is no step difference.

摘要翻译： 在选择性地实现跟踪伺服和点位置伺服的光盘装置中，提供了一个中断消除单元，使得当从跟踪伺服切换到点位置伺服时，并且当相反方向切换时，低频 跟踪驱动信号的分量和点位置伺服的低频分量平滑连接，使得没有步进差。

公开(公告)号：US06721246B2

公开(公告)日：2004-04-13

申请号：US10238587

申请日：2002-09-11

申请人： Yasuhito Soma ,  Akira Matsubara ,  Kazuhiko Kouno

发明人： Yasuhito Soma ,  Akira Matsubara ,  Kazuhiko Kouno

IPC分类号： G11B700

CPC分类号： G11B7/0901 ,  G11B7/0941

摘要： The present invention provides an optical disc apparatus which solves a problem that the tracking control takes off when an objective lens is displaced in the tracking direction due to its weight. In this optical disc apparatus, a spot position detector 108 generates a spot position signal which indicates a position of a light spot on a light receiving element 105, and supplies the signal to a traverse loop filter 111 and a spot position loop filter 109. A controller 115 supplies an output from the spot position loop filter 109 to a tracking actuator 104, before supplying an output from the traverse loop filter 111 to a traverse motor 113, previously moves the light spot near the center of the light receiving element 105, and starts the traverse control in a state where a value of the spot position signal at starting of the traverse control is reduced.

公开(公告)号：US07106668B2

公开(公告)日：2006-09-12

申请号：US10963243

申请日：2004-10-12

申请人： Takanori Okada ,  Shuichi Yoshida ,  Masaharu Imura ,  Kiyoshi Masaki ,  Kazuhiro Mihara ,  Tsutomu Kai ,  Noritaka Akagi ,  Masanori Harui ,  Kazuhiko Kouno

发明人： Takanori Okada ,  Shuichi Yoshida ,  Masaharu Imura ,  Kiyoshi Masaki ,  Kazuhiro Mihara ,  Tsutomu Kai ,  Noritaka Akagi ,  Masanori Harui ,  Kazuhiko Kouno

IPC分类号： G11B21/08

CPC分类号： G11B7/08529 ,  G11B7/08582

摘要： A disk drive apparatus for a disk having helically-formed or concentric circle-like formed tracks includes a spindle motor for controlling a rotation of the disk; a pick-up device for recording or reproducing information on or from the disk; a stepping motor for moving the pick-up device in a radial direction of the disk in accordance with a drive current; a system controller for tracking a rotation speed of the spindle motor and for outputting command signals according to the rotation speed of the spindle motor; and a stepping motor controller for controlling the stepping motor by changing a slope of a rising part and a falling part of a waveform of the drive current of the stepping motor according to the command signals.

摘要翻译： 具有螺旋形状或同心圆形的轨道的盘的盘驱动装置包括用于控制盘的旋转的主轴电动机; 用于在盘上记录或再现信息的拾取装置; 步进电动机，用于根据驱动电流沿着盘的径向方向移动拾取装置; 系统控制器，用于跟踪主轴电机的转速，并根据主轴电动机的转速输出指令信号; 以及步进电动机控制器，其通过根据指令信号改变步进电动机的驱动电流的波形的上升部分和下降部分的斜率来控制步进电动机。