Lighting device of discharge lamp, illumination apparatus and illumination system
    2.
    发明授权
    Lighting device of discharge lamp, illumination apparatus and illumination system 失效
    放电灯照明装置,照明装置及照明系统

    公开(公告)号:US07667975B2

    公开(公告)日:2010-02-23

    申请号:US10580071

    申请日:2004-12-15

    IPC分类号: H05K7/00

    摘要: A lighting device for a lamp device is provided. The lighting device includes a circuit board and film capacitors packaged on the circuit board by using leadless flow solders. Each film capacitor comprises polypropylene films and lead wires, and a material of the lead wires has a thermal conductivity lower than a thermal conductivity of copper, and terminals and internal materials of the film capacitors are leadless. A diameter of the lead wires is 0.6− (mm) or less, a cross-sectional area is 35 mm2 or less, and a temperature at a terminal end of the lead wires in the film capacitors during a soldering process is 130° C. or less.

    摘要翻译: 提供了一种用于灯装置的照明装置。 照明装置包括通过使用无铅流动焊料封装在电路板上的电路板和薄膜电容器。 每个薄膜电容器包括聚丙烯薄膜和导线,并且导线的材料的导热率低于铜的热导率,薄膜电容器的端子和内部材料是无引线的。 引线的直径为0.6-(mm)以下,截面积为35mm 2以下,焊接工序中的薄膜电容器的引线的末端的温度为130℃。 或更少。

    Servo circuit for generating a tracking error signal for optical disk
player
    4.
    发明授权
    Servo circuit for generating a tracking error signal for optical disk player 失效
    用于产生光盘播放器跟踪误差信号的伺服电路

    公开(公告)号:US4860271A

    公开(公告)日:1989-08-22

    申请号:US167284

    申请日:1988-03-11

    IPC分类号: G11B7/095 G11B21/08 G11B21/10

    摘要: A servo circuit for use in an optical disk player or the like, which can track a disk having a large eccentrically without abnormal sampling of the RF signal produced as a result of scanning the disk. The servo circuit according to this invention comprises a first comparator for comparing RF signals from a pair wobbled pits on a optical disk and generating a difference signal indicating the level difference between the AF signals; a holding means for holding the difference signal for a predetermined period; a reference level producing circuit for setting reference levels having a predetermined width with the level of a previously sampled difference signal of the holding means as a center; a second comparator for comparing the level of a presently sampled difference signal of the first comparator with the reference level and outputting a first signal indicative of the comparative result; and a selector for selecting and outputting, as a tracking error signal, either the presently sampled difference signal and a second signal having a level within the predetermined width of the reference level in accordance with the comparative result. The presently sampled difference signal is selected when the level of the presently sampled difference signal is within the reference level and the second signal is related when the presently sampled difference signal is out of the reference level.

    摘要翻译: 一种用于光盘播放器等的伺服电路,其可以跟踪具有大的偏心的盘而不会由于扫描盘而产生的RF信号的异常采样。 根据本发明的伺服电路包括:第一比较器,用于比较来自光盘上的一对摆动凹坑的RF信号,并产生指示AF信号之间的电平差的差信号; 保持装置,用于保持差分信号一段预定时间; 参考电平产生电路,用于将具有预定宽度的参考电平设置为以所述保持装置的先前采样的差分信号的电平为中心; 第二比较器,用于比较第一比较器的当前采样的差分信号的电平与参考电平,并输出指示比较结果的第一信号; 以及选择器,用于根据比较结果选择和输出当前采样差分信号和具有在基准电平的预定宽度内的电平的第二信号作为跟踪误差信号。 当当前采样的差分信号的电平在参考电平内并且当当前采样的差信号在参考电平之外时第二信号相关时,选择当前采样的差分信号。

    Circuit for digitally generating a tracking error signal to avoid offset
monitoring
    5.
    发明授权
    Circuit for digitally generating a tracking error signal to avoid offset monitoring 失效
    用于数字产生跟踪误差信号以避免偏移监测的电路

    公开(公告)号:US4935912A

    公开(公告)日:1990-06-19

    申请号:US197240

    申请日:1988-05-23

    IPC分类号: G11B7/09 G11B21/10

    CPC分类号: G11B7/0901 G11B21/106

    摘要: A circuit for computing a tracking error signal digitally. Under control of appropriate timing, input RF signals are latched in successive latches, and outputs of the latches are compared. The latch (9) whose output is D/A converted as a tracking error signal is controlled by suitable logic (25) to latch an output of a preceding latch (8), that output being used to provide input to the logic (25) through a threshold circuitry which includes adders (21,22) and comparators (14,15). The circuit takes advantage of servo patterns on surfaces of disks, particularly optical disks, to provide track count and on-track status. The digital approach removes the necessity for using capacitors or other types of sample-and-hold circuitry, and for controlling offset values.

    摘要翻译: 用于以数字方式计算跟踪误差信号的电路。 在适当定时的控制下,输入RF信号在相继的锁存器中锁存,并比较锁存器的输出。 其输出为D / A转换为跟踪误差信号的锁存器(9)由合适的逻辑(25)控制以锁存先前锁存器(8)的输出,该输出用于向逻辑(25)提供输入, 通过包括加法器(21,22)和比较器(14,15)的阈值电路。 该电路利用了磁盘表面上的伺服模式,特别是光盘,以提供轨迹数和轨道状态。 数字方法消除了使用电容器或其他类型的采样和保持电路以及用于控制偏移值的必要性。

    Actuator drive circuit
    6.
    发明授权
    Actuator drive circuit 失效
    执行器驱动电路

    公开(公告)号:US4737696A

    公开(公告)日:1988-04-12

    申请号:US58126

    申请日:1987-06-04

    CPC分类号: H01F7/1872

    摘要: An actuator drive circuit for driving a load using a single power supply. The current drive is not dependent on load impedance characteristics. Drive means provides a voltage across the first terminal and the second terminal during at input signal positive phase, and reverse voltage across the first terminal and the second terminal during a negative phase. A current detection resistor is connected in series with the load, and the voltage across the resistor is input to a differential amplifier. The amplifier output provides feedback to the drive means.

    摘要翻译: 用于使用单个电源驱动负载的致动器驱动电路。 电流驱动不依赖于负载阻抗特性。 驱动装置在输入信号正相期间在第一端子和第二端子处提供电压,并且在负相位期间在第一端子和第二端子之间提供反向电压。 电流检测电阻与负载串联连接,电阻两端的电压输入到差分放大器。 放大器输出为驱动装置提供反馈。

    Pickup level control device for a system for reading out recorded
information
    7.
    发明授权
    Pickup level control device for a system for reading out recorded information 失效
    用于读出记录信息的系统的拾取液位控制装置

    公开(公告)号:US4558213A

    公开(公告)日:1985-12-10

    申请号:US499357

    申请日:1983-05-31

    摘要: A pickup level control device for a system for reading out recorded information which has a pickup element producing a pickup output signal. The device detects a dc component of the pickup output signal and produces a level control signal. A voltage level of the pickup output signal is controlled in response to the level control signal produced by the dc level detection operation. The control of the voltage level of the pickup output signal is performed by a variable impedance element connected to a terminal of the pickup element, so that a peak level of an ac component of the pickup output signal is controlled below a predetermined level.

    摘要翻译: 一种用于读出具有产生拾取输出信号的拾取元件的记录信息的系统的拾取液位控制装置。 该装置检测拾取器输出信号的直流分量并产生电平控制信号。 响应于由直流电平检测操作产生的电平控制信号来控制拾取器输出信号的电压电平。 拾取器输出信号的电压电平的控制由连接到拾取元件的端子的可变阻抗元件执行,使得拾取输出信号的交流分量的峰值电平被控制在预定水平以下。

    Lighting device of discharge lamp, illumination apparatus and illimination system
    8.
    发明申请
    Lighting device of discharge lamp, illumination apparatus and illimination system 失效
    放电灯照明装置,照明装置及照明系统

    公开(公告)号:US20070103879A1

    公开(公告)日:2007-05-10

    申请号:US10580071

    申请日:2004-12-15

    IPC分类号: H05K1/18

    摘要: A lighting device for a lamp device is provided. The lighting device includes a circuit board and film capacitors packaged on the circuit board by using leadless flow solders. Each film capacitor comprises polypropylene films and lead wires, and a material of the lead wires has a thermal conductivity lower than a thermal conductivity of copper, and terminals and internal materials of the film capacitors are leadless. A diameter of the lead wires is 0.6- (mm) or less, a cross-sectional area is 35 mm 2 or less, and a temperature at a terminal end of the lead wires in the film capacitors during a soldering process is 130° C. or less.

    摘要翻译: 提供了一种用于灯装置的照明装置。 照明装置包括通过使用无铅流动焊料封装在电路板上的电路板和薄膜电容器。 每个薄膜电容器包括聚丙烯薄膜和导线,并且导线的材料的导热率低于铜的热导率,薄膜电容器的端子和内部材料是无引线的。 引线的直径为0.6-(mm)以下,横截面积为35mm以下,薄膜电容器的引线端子的温度为 焊接工艺为130℃以下。