Heat treatment method for thin film magnetic head
    91.
    发明授权
    Heat treatment method for thin film magnetic head 失效
    薄膜磁头热处理方法

    公开(公告)号:US5503686A

    公开(公告)日:1996-04-02

    申请号:US402893

    申请日:1995-03-13

    摘要: A magnetic recording head that includes a combined IN element and an MR element is heat treated under two types of magnetic fields. A rotating magnetic field, having a first magnetic field intensity, is applied for a time while the magnetic recording head is at an elevated temperature. Then, part-way during cooling of the magnetic head, the rotating magnetic field is replaced by a direct (non-rotating) magnetic field having a second magnetic field intensity. The second magnetic field intensity is lower than the first magnetic field intensity, whereby the properties of both the IN element and the MR element are maintained at high values.

    摘要翻译: 包括组合的IN元件和MR元件的磁记录头在两种类型的磁场下进行热处理。 具有第一磁场强度的旋转磁场在磁记录头处于升高的温度下被施加一段时间。 然后,在磁头的冷却过程中,单向旋转磁场由具有第二磁场强度的直接(非旋转)磁场代替。 第二磁场强度低于第一磁场强度,由此将IN元件和MR元件的性质保持在高值。

    Magnetic marker and reading and identifying apparatus therefor
    92.
    发明授权
    Magnetic marker and reading and identifying apparatus therefor 失效
    磁标记及其识别装置

    公开(公告)号:US5204526A

    公开(公告)日:1993-04-20

    申请号:US837092

    申请日:1992-02-18

    IPC分类号: G06K7/08 G06K19/06

    摘要: A magnetic marker has a plurality of thin strips or wires of saturatable magnetic material having square .phi.-H characteristics and coercive forces different from each other. Amorphous magnetic material may be used. When the marker is subjected to magnetization reversal by an external magnetic field, variations of magnetic flux corresponding to a plurality of magnetization reversals can be chronologically detected as a voltage pulse train by detecting coils. By processing this voltage pulse train, a pattern can be made, recognized, so that the magnetic marker effectively identifies the kind of article to which it is attached. A magnetic marker reading and identifying apparatus has a plurality of exciting coils for producing a rotating magnetic field, with the axis of at least one of the exciting coils being orthogonal to the axis of at least one other exciting coil. The rotating a.c. magnetic field can be applied to the magnetic marker while the marker passes across the magnetic field irrespective of the position and direction of the marker, with no deviation in the pulse voltage due to leakage flux from the magnetic marker, thereby permitting reliable detection of the pulse train so that the kind and quantity of articles can be identified with high accuracy.

    摘要翻译: 磁性标记具有多个具有方形phi-H特性和彼此不同的矫顽力的饱和磁性材料的薄带或线。 可以使用非晶磁性材料。 当通过外部磁场对标记进行磁化反转时,通过检测线圈可以按时间顺序地检测对应于多个磁化反转的磁通量的变化作为电压脉冲串。 通过处理该电压脉冲串,可以制作,识别图案,使得磁标记器有效地识别其附着的物品的种类。 磁性标记读取和识别装置具有用于产生旋转磁场的多个励磁线圈,其中至少一个励磁线圈的轴线与至少一个其它激励线圈的轴线正交。 旋转a.c. 不管标记的位置和方向如何,标记通过磁场,磁性标记可以施加到磁性标记上,而由于来自磁性标记的漏磁通,脉冲电压没有偏差,从而可以可靠地检测脉冲 训练,以便准确地识别物品的种类和数量。

    Discharge lamp lighting device, projector, and method of controlling projector
    96.
    发明授权
    Discharge lamp lighting device, projector, and method of controlling projector 有权
    放电灯照明装置,投影机和控制投影机的方法

    公开(公告)号:US09024538B2

    公开(公告)日:2015-05-05

    申请号:US13563559

    申请日:2012-07-31

    申请人: Osamu Saito

    发明人: Osamu Saito

    摘要: A discharge lamp lighting device according to the invention can reliably light a discharge lamp, and at the same time, prevent output of unnecessary high-voltage pulses with a simple circuit configuration. The discharge lamp lighting device includes a capacitor charged with a current from a direct-current power supply, a transformer adapted to output a starting pulse between electrodes of the discharge lamp in accordance with a discharge current flowing from the capacitor, a discharge control circuit adapted to switch ON/OFF the discharge current from the capacitor to the transformer, and a timing generation section adapted to switch the discharge control circuit to ON after a voltage between both ends of the capacitor has reached a reference voltage. The timing generation section can operate in accordance with a plurality of reference voltages.

    摘要翻译: 根据本发明的放电灯点亮装置可以可靠地点燃放电灯,同时防止以简单的电路结构输出不必要的高电压脉冲。 放电灯点亮装置包括充电了来自直流电源的电流的电容器,适于根据从电容器流出的放电电流在放电灯的电极之间输出起动脉冲的变压器,适于 将放电电流从电容器切换到变压器的开/关开关,以及适合于在电容器两端的电压达到参考电压之后将放电控制电路切换为导通的定时发生部。 定时产生部分可以根据多个参考电压进行操作。

    Light source control device and projector
    97.
    发明授权
    Light source control device and projector 有权
    光源控制装置和投影机

    公开(公告)号:US08733947B2

    公开(公告)日:2014-05-27

    申请号:US13189053

    申请日:2011-07-22

    摘要: A light source control device is for controlling a solid-state light source array having a plurality of solid-state light sources connected in series to each other, and includes a detector (a current detection resistor, voltage detection resistors, and operational amplifiers) adapted to detect at least one of a voltage applied to the solid-state light source array and a current supplied to the solid-state light source array, and a control circuit adapted to determine whether or not discontinuity of at least one of the voltage and the current is present using a detection result of the detector, and change control of one of the current and electrical power performed on the solid-state light source array if it is determined that the discontinuity is present.

    摘要翻译: 一种光源控制装置,用于控制具有彼此串联连接的多个固态光源的固态光源阵列,并且包括一个适配的检测器(电流检测电阻,电压检测电阻和运算放大器) 以检测施加到固态光源阵列的电压和提供给固态光源阵列的电流中的至少一个,以及控制电路,其适于确定电压和电压的至少一个的不连续性 如果确定存在不连续性,则使用检测器的检测结果存在电流并且改变对固态光源阵列执行的电功率和电功率之一的控制。

    Projection-type display device and method of controlling thereof
    98.
    发明授权
    Projection-type display device and method of controlling thereof 有权
    投影型显示装置及其控制方法

    公开(公告)号:US08598811B2

    公开(公告)日:2013-12-03

    申请号:US13187739

    申请日:2011-07-21

    IPC分类号: G05F1/00

    摘要: A projection-type display device according to an embodiment of the invention modulates light emitted from a solid-state light source array and projects the modulated light on a screen. The projection-type display device includes a power source device that generates power used for driving the solid-state light source array using power supplied from a power source, an instant interruption detecting circuit that detects an instant interruption of the power source, and a control device that, in a case where the instant interruption of the power source is detected by the instant interruption detecting circuit, performs control of extinguishing the solid-state light source array during at least a part of an instant interruption period until recovery after the detection of the instant interruption of the power source.

    摘要翻译: 根据本发明的实施例的投影型显示装置调制从固态光源阵列发射的光并将调制的光投射在屏幕上。 投影式显示装置包括:电源装置,其使用从电源供给的电力来产生用于驱动固态光源阵列的电力;瞬时中断检测电路,其检测电源的即时中断;以及控制 在瞬时中断检测电路检测到电源的即时中断的情况下,在瞬时中断期间的至少一部分中进行熄灭固态光源阵列的控制,直到检测到 瞬间中断电源。

    Lighting device, lighting control device, illumination device, and projector
    99.
    发明授权
    Lighting device, lighting control device, illumination device, and projector 有权
    照明装置,照明控制装置,照明装置和投影仪

    公开(公告)号:US08487553B2

    公开(公告)日:2013-07-16

    申请号:US13045993

    申请日:2011-03-11

    IPC分类号: G05F1/00

    CPC分类号: G03B21/2026 G03B21/206

    摘要: A lighting device which lights the discharge lamp, includes: a converting circuit which converts the direct current into an alternating current; a pulse generating circuit which generates a high voltage pulse; and a trigger circuit which causes the pulse generating circuit to generate the high voltage pulse, wherein the pulse generating circuit includes a primary winding and a secondary winding and generates the high voltage pulse by increasing a current input to the secondary winding based on a current input to the primary winding, and the trigger circuit includes a high pass filter; a first capacitor which stores and discharges charges input via the high pass filter; and a third switching element which outputs an output current from a second capacitor connected in parallel to the converting circuit to the primary winding if an output voltage from the first capacitor exceeds a threshold.

    摘要翻译: 点亮放电灯的照明装置包括:转换电路,其将直流电转换为交流电; 产生高电压脉冲的脉冲发生电路; 以及使所述脉冲发生电路产生所述高电压脉冲的触发电路,其中所述脉冲发生电路包括初级绕组和次级绕组,并且基于电流输入增加对所述次级绕组的电流输入而产生所述高电压脉冲 并且所述触发电路包括高通滤波器; 第一电容器,其经由高通滤波器存储和放电输入的电荷; 以及第三开关元件,如果来自第一电容器的输出电压超过阈值,则将来自连接到转换电路的第二电容器的输出电流输出到初级绕组。