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    • 42. 发明申请
    • Drive apparatus
    • 驱动装置
    • US20060238160A1
    • 2006-10-26
    • US11398399
    • 2006-04-05
    • Shingo FukamizuYasunori Yamamoto
    • Shingo FukamizuYasunori Yamamoto
    • G05B1/06
    • G11B19/02G11B7/0953G11B7/0956
    • Optical disc drives designed for reduced power consumption switch the supply voltage in three stages between first, second, and third power supplies, but the reduction in power consumption that is possible in the drive circuits with three stage switching control is limited. A drive output tracking signal is generated according to the waveform of the drive output that drives the focus and tracking actuators, and this drive output tracking signal is applied to a step-up type focusing and tracking power supply. The step-up power supply controls the fixed output according to the drive output tracking signal, and when the drive output is greater than the fixed output, control output that is greater than or equal to the fixed output and slightly greater than the drive output is generated. This control output is supplied to the focus and tracking drive circuits to produce drive output.
    • 设计用于降低功耗的光盘驱动器将电源电压在第一,第二和第三电源之间分三级切换,但是在具有三级切换控制的驱动电路中可能的功耗的降低是有限的。 根据驱动焦点和跟踪执行器的驱动输出的波形产生驱动输出跟踪信号,该驱动输出跟踪信号被应用于升压型聚焦跟踪电源。 升压电源根据驱动输出跟踪信号控制固定输出,当驱动输出大于固定输出时,大于或等于固定输出的控制输出略大于驱动输出, 生成。 该控制输出提供给焦点和跟踪驱动电路以产生驱动输出。
    • 43. 发明授权
    • Motor drive method and motor driver
    • 电机驱动方式和电机驱动
    • US06873126B2
    • 2005-03-29
    • US10608157
    • 2003-06-30
    • Masashi InaoYasunori YamamotoTaishi IwanagaTomoharu YokouchiHirofumi Sakai
    • Masashi InaoYasunori YamamotoTaishi IwanagaTomoharu YokouchiHirofumi Sakai
    • H02P6/00H02P6/14H02K23/00
    • H02P6/14H02P6/28H02P2209/07
    • A motor drive method for a motor driver having output circuits each including upper and lower side switching elements connected in series, and a current detection resistance connected in series with the output circuits in common. The motor drive method includes the steps of: turning ON a switching element on one side of one of the output circuits for a time period corresponding to a predetermined electrical angle; and repeatedly switching switching elements on the other side of a plurality of output circuits among the remaining ones of the output circuits. In the switching step, each of a plurality of periods obtained by dividing the time period corresponding to the predetermined electrical angle includes a first period in which one of the switching elements to be switched is turned ON and a second period in which another one of the switching elements is turned ON.
    • 一种用于具有输出电路的电机驱动器的电机驱动方法,每个输出电路各自包括串联连接的上下开关元件和与输出电路串联连接的电流检测电阻。 电动机驱动方法包括以下步骤:在一个输出电路的一侧上接通开关元件一段对应于预定电角度的时间段; 并且在其余输出电路中的多个输出电路的另一侧反复切换开关元件。 在切换步骤中,通过划分对应于预定电角度的时间段而获得的多个周期中的每个周期包括第一周期,其中要切换的开关元件中的一个被接通,以及第二周期,其中, 开关元件接通。
    • 44. 发明授权
    • Motor driving device and motor driving method
    • 电机驱动装置及电机驱动方式
    • US06710569B2
    • 2004-03-23
    • US10367820
    • 2003-02-19
    • Taishi IwanagaYasunori Yamamoto
    • Taishi IwanagaYasunori Yamamoto
    • H02P308
    • H02P6/14H02P6/10H02P2209/07
    • The present invention provides a motor driving device that produces a first PWM control signal and a second PWM control signal according respectively to different torque command signals for energizing motor coils of a plurality of phases with PWM control in parallel, wherein it is possible to avoid a situation where two-phase simultaneous energization continues for a long period of time. For this purpose, a PWM control section unconditionally turns OFF the first and second PWM control signals according to a first reset pulse signal and a second reset pulse signal, respectively, produced by an oscillation section. Thus, it is possible to avoid a situation where two phases are energized simultaneously for a long period of time, and to maintain the parallelism of the two phases being energized.
    • 本发明提供了一种电动机驱动装置,其分别根据不同的转矩指令信号产生第一PWM控制信号和第二PWM控制信号,用于通过并行的PWM控制来激励多相的电动机线圈,其中可以避免 两相同时通电持续很长时间的情况。 为此,PWM控制部根据由振荡部分产生的第一复位脉冲信号和第二复位脉冲信号无条件地关闭第一和第二PWM控制信号。 因此,可以避免长时间同时通电两相,并保持两相并联通电的情况。
    • 49. 发明授权
    • Recording apparatus
    • 记录装置
    • US07869688B2
    • 2011-01-11
    • US11344342
    • 2006-02-01
    • Tomomi UmeiYoshiteru MinoYasunori Yamamoto
    • Tomomi UmeiYoshiteru MinoYasunori Yamamoto
    • H04N5/91
    • H04N19/40H04N19/12H04N19/139H04N19/15H04N19/154H04N19/156H04N19/159H04N19/162H04N19/46
    • The recording apparatus of the present invention: stores therein one or more recorded data pieces, each of which is created by encoding a video data piece, and one or more encoding information sets, each of which is information extracted when a different one of the video data pieces is encoded and represents characteristics of the video data piece; selects a recorded data piece based on the stored encoding information sets; creates a re-encoded data piece by re-encoding the selected recorded data piece using a predetermined encoding method; extracts a corresponding re-encoding information set in a course of creating the re-encoded data piece; and stores (a) the re-encoded data piece which replaces the selected recorded data piece and (b) the re-encoding information set which replaces an encoding information set corresponding to the selected recorded data piece.
    • 本发明的记录装置在其中存储一个或多个记录的数据,每个记录的数据是通过对视频数据段进行编码而创建的,以及一个或多个编码信息集合,每个编码信息集合是当视频的不同的一个时提取的信息 数据片段被编码并表示视频数据片段的特征; 基于存储的编码信息集选择记录的数据片; 通过使用预定的编码方法对所选择的记录数据重新编码来创建重新编码的数据片段; 在创建重新编码的数据段的过程中提取对应的重新编码信息集; 并存储(a)替换所选择的记录数据的重新编码数据段,和(b)替换对应于所选记录数据段的编码信息集的重新编码信息集。