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    • 3. 发明授权
    • Car-stereo with removable control panel, alarm, and power conservation
    • 车载立体声带可移动控制面板,报警和省电
    • US5554966A
    • 1996-09-10
    • US6245
    • 1993-01-19
    • Takayuki IijimaYoshio AoyagiShigetoshi KatoOsamu YoshizawaHiroshi WakimotoAkira KawaharaAkio Namiki
    • Takayuki IijimaYoshio AoyagiShigetoshi KatoOsamu YoshizawaHiroshi WakimotoAkira KawaharaAkio Namiki
    • B60R11/02G08B21/00
    • B60R11/02
    • An audio apparatus having a detachable control panel or operating-part main unit includes a microcomputer for detecting an OFF state of an ACC position of the ignition key, or the attached/detached state of the operating-part main unit. When such states are detected, normal operations of the microcomputer; namely, the operations to turn on an SWD V.sub.DD terminal and an A/D port and to set a KEY DATA terminal into a standby mode, are stopped intermittently in order to execute a low consumption process in which electric power is consumed only for holding information in memory in the microcomputer. When the microcomputer detects the OFF state of the ignition key or the OFF state of an installation detection switch and, an alarm ON state is set in the memory in the microcomputer, then an alarm sound is generated from a speaker for a predetermined time. When the alarm sound is unnecessary, the state of the memory in the microcomputer can be updated to an alarm OFF state by depressing a function button and operating the ignition key. When the installation detection section detects the removal of the operating-part main unit, on the basis of a decrease in voltage value of an installation detection switch section and CPU recognizing the removal of the operation-part main unit, a control section sends control signals to a power supply limiting circuit and a data transmission switch section.
    • 具有可拆卸控制面板或操作部件主单元的音频设备包括用于检测点火钥匙的ACC位置的OFF状态或操作部件主单元的安装/拆卸状态的微型计算机。 当检测到这种状态时,微机的正常操作; 即,将SWD VDD端子和A / D端口接通并将KEY DATA端子设置为待机模式的操作被间歇地停止,以执行仅为了保持信息而消耗电力的低消耗过程 在微机内存。 当微型计算机检测到点火钥匙的OFF状态或安装检测开关的OFF状态,并且在微型计算机的存储器中设置了报警ON状态时,则从扬声器产生预定时间的报警声。 当不需要报警声时,可以通过按下功能按钮并操作点火钥匙将微型计算机中的存储器的状态更新为报警关闭状态。 当安装检测部分检测到操作部件主单元的拆卸时,基于安装检测开关部分的电压值的降低和识别操作部分主单元的移除的CPU,控制部分发送控制信号 到电源限制电路和数据传输开关部分。
    • 6. 发明授权
    • Focus servo controlling apparatus, information reproducing apparatus and information recording apparatus
    • 聚焦伺服控制装置,信息再现装置和信息记录装置
    • US06731574B1
    • 2004-05-04
    • US09684798
    • 2000-10-10
    • Shinichiro AbeTakayuki Iijima
    • Shinichiro AbeTakayuki Iijima
    • G11B700
    • G11B7/0945G11B7/0946G11B11/10576G11B11/10597
    • A focus servo control is performed by changing a condition of a focus servo loop from an open condition to a close condition in correspondence with a level of a reflection light signal, which is obtained as a reflection light of a light beam reflected from an information record medium is detected by a light receiving element such as an optical pickup. A focus servo controlling apparatus is provided with a disturbance level detecting device such as a servo control circuit for detecting a level of a disturbance light signal, which is obtained as a disturbance light other than the reflection light is received by the light receiving element; and a controlling device such as a system controller for setting a level, which is larger than the level of the disturbance light signal detected by the disturbance level detecting device, as a threshold level and for changing the condition of the focus servo loop from the open condition to the close condition on the basis of a timing when the level of the reflection light signal becomes equal to or larger than the set threshold level.
    • 通过将聚焦伺服环路的条件从打开状态改变为接近状态,与反射光信号的电平相对应地进行聚焦伺服控制,反射光信号的电平作为从信息记录反射的光束的反射光获得 介质由诸如光学拾取器的光接收元件检测。 聚焦伺服控制装置设置有干扰电平检测装置,例如用于检测干扰光信号的电平的伺服控制电路,该干扰光信号的电平是由光接收元件接收的除了反射光之外的干扰光获得的; 以及诸如系统控制器的控制装置,用于将大于由干扰电平检测装置检测的干扰光信号的电平的电平设置为阈值电平,并且用于将聚焦伺服环路的状态从开路 基于反射光信号的电平变得等于或大于设定的阈值电平的定时,使其处于关闭状态。