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    • 4. 发明授权
    • Disk player for changing the playing linear velocity in multiple stages
    • 用于在多个阶段改变播放线速度的磁盘播放器
    • US5420842A
    • 1995-05-30
    • US139089
    • 1993-10-21
    • Hidetoshi Shimizu
    • Hidetoshi Shimizu
    • G11B19/28G11B7/00
    • G11B19/28
    • The object of the present invention is to provide a disk player, which is capable of changing the playing linear velocity by multiple stages to shorten the reading time. The disk player comprises includes an optical pick-up for reading data and outputting data signals; a first clock section for generating master clock signals, the first clock section being capable of changing the frequency of the master clock signals by multiple stages; a second clock section for generating second clock signals; a comparing section for comparing frequency and phase of the master clock signals and the second signals and generating deviation signals; and a drive section for sending drive signals, whose voltage level changes according to voltage changes of the deviation signals, to a motor for rotating a disk, whereby the drive section controls the motor so as to synchronize the frequency and the phase of the second clock signals with those of the master clock signals.
    • 本发明的目的是提供一种盘播放器,其能够通过多个阶段来改变播放线速度以缩短读取时间。 盘播放器包括:用于读取数据并输出数据信号的光学拾取器; 第一时钟部分,用于产生主时钟信号,第一时钟部分能够通过多级改变主时钟信号的频率; 用于产生第二时钟信号的第二时钟部分; 用于比较主时钟信号和第二信号的频率和相位并产生偏差信号的比较部分; 以及驱动部,用于将其电压电平根据偏差信号的电压变化而变化的驱动信号发送到用于旋转盘的电动机,由此驱动部分控制电动机,以使第二时钟的频率和相位同步 信号与主时钟信号的信号。
    • 5. 发明授权
    • Disk player with constant angular velocity
    • 具有恒定角速度的磁盘播放机
    • US5414685A
    • 1995-05-09
    • US130790
    • 1993-10-04
    • Hidetoshi Shimizu
    • Hidetoshi Shimizu
    • G11B19/28G11B7/005G11B19/12G11B19/20G11B19/24G11B20/10G11B20/14G11B7/00
    • G11B19/20G11B19/12G11B19/24G11B7/005
    • An object of the invention is to provide a disk player, which is capable of accessing to a disk in a short time, having higher durability and lower electric power consumption. The disk player comprising: a motor for rotating a disk; an optical pick-up for reading recorded data, which include synchronizing signals and output-data elements, and outputting as first signals; a first clock section for extracting the synchronizing signals and generating first clock signals, whose frequency is equal to that of the synchronizing signals; a second clock section for generating second clock signals and coinciding the frequency and the phase of the second clock signals with that of the first clock signals; a data extracting section for extracting the output-data elements on the basis of the second clock signals and outputting as second signals; and a processing section for rotating the motor at fixed rotational speed.
    • 本发明的目的是提供一种能够在短时间内访问磁盘的具有更高耐久性和更低的电力消耗的磁盘播放器。 该盘播放机包括:一个用于旋转盘的马达; 用于读取记录数据的光学拾取器,包括同步信号和输出数据元素,并作为第一信号输出; 第一时钟部分,用于提取同步信号并产生其频率等于同步信号频率的第一时钟信号; 第二时钟部分,用于产生第二时钟信号,并将第二时钟信号的频率和相位与第一时钟信号的频率和相位重合; 数据提取部分,用于基于第二时钟信号提取输出数据元素并输出作为第二信号; 以及用于以固定旋转速度旋转马达的处理部分。
    • 6. 发明授权
    • Brake booster for wheeled vehicles
    • 用于轮式车辆的制动助力器
    • US4208872A
    • 1980-06-24
    • US892156
    • 1978-03-31
    • Hidetoshi ShimizuMitsuyuki Horie
    • Hidetoshi ShimizuMitsuyuki Horie
    • B60T13/40B60T13/24F01N5/04B60T13/00
    • B60T13/245
    • A pneumatically operated brake booster comprises a hydraulic cylinder disposed within a hydraulic braking circuit connecting a master cylinder to wheel brake cylinders to increase the braking pressure trapped within the wheel brake cylinders and a servomotor for pneumatically activating the hydraulic cylinder in response to hydraulic pressure from the master cylinder. The servomotor has a spring loaded diaphgragm piston forming a negative pressure chamber and a variable pressure chamber, the former being in connection to a source of negative pressure and the latter being connected to the atmospheric pressure in response to master cylinder pressure applied to the hydraulic cylinder. The brake booster includes a control valve which is provided to selectively connect the variable pressure chamber of the servomotor to such a positive pressure source as exhaust pressure to obtain additional pressure in an emergent braking operation of the vehicle.
    • 气动制动助力器包括设置在液压制动回路内的液压缸,液压制动回路将主缸连接到车轮制动缸,以增加在车轮制动缸内被捕获的制动压力;以及伺服电动机,用于响应液压缸 主缸。 伺服电动机具有形成负压室和可变压力室的弹簧加载的形式的活塞活塞,前者与负压源连接,后者根据施加到液压缸的主缸压力连接到大气压力 。 制动助力器包括控制阀,该控制阀被设置成选择性地将伺服电机的可变压力室连接到诸如排气压力的正压源,以在车辆的紧急制动操作中获得附加压力。