公开(公告)号：US5693934A

公开(公告)日：1997-12-02

申请号：US578969

申请日：1995-12-27

申请人： Tatsuya Hohmoto ,  Hiroshi Murakami ,  Kunihiko Karasawa ,  Hideo Hara

发明人： Tatsuya Hohmoto ,  Hiroshi Murakami ,  Kunihiko Karasawa ,  Hideo Hara

IPC分类号： G01J1/42 ,  H01L31/10 ,  H03K17/795 ,  H01J40/14

CPC分类号： H03K17/795

摘要： Photocurrents outputted by photo detecting circuits (1.sub.1 to 1.sub.n) disposed in first current paths (2.sub.1 to 2.sub.n) are amplified by current amplifying means (3.sub.1 to 3.sub.n) disposed in the first current paths (2.sub.1 to 2.sub.n), respectively. The output currents from the plurality of current amplifying means (3.sub.1 to 3.sub.n) are converted into voltage all by one current-voltage converting means (5). The current amplifying means (3.sub.1 to 3.sub.n) are turned on or off by control signals (3.sub.1S to 3.sub.nS), and therefore the luminance detecting circuit amplifies the current of the required photo detecting element only, and outputs into the current-voltage converting means (5).

摘要翻译： 设置在第一电流路径（21〜2n）中的光检测电路（11〜1n）输出的光电流分别由设置在第一电流路径（21〜2n）中的电流放大单元（31〜3n）放大。 来自多个电流放大装置（31至3n）的输出电流由一个电流 - 电压转换装置（5）全部转换成电压。 电流放大装置（31〜3n）通过控制信号（31S〜3nS）导通或截止，因此亮度检测电路仅放大所需光电检测元件的电流，并输出到电流 - 电压转换装置 5）。

公开(公告)号：US5515260A

公开(公告)日：1996-05-07

申请号：US432814

申请日：1995-05-02

申请人： Fumihiro Watanabe ,  Fumihide Murao ,  Hiroshi Murakami ,  Hideo Hara ,  Hideho Itoh ,  Tatsuya Hohmoto

发明人： Fumihiro Watanabe ,  Fumihide Murao ,  Hiroshi Murakami ,  Hideo Hara ,  Hideho Itoh ,  Tatsuya Hohmoto

IPC分类号： H03G7/00 ,  G05F3/24 ,  H02M7/00 ,  G05F1/40

CPC分类号： G05F3/242

摘要： A current-voltage conversion circuit which is capable of performing logarithmic compression is obtained using only CMOS processes. An emitter of a PNP transistor (10) and a current input terminal (51) are connected commonly to a reverse input terminal of an operational amplifier (53), while a first reference voltage input terminal is connected to a non-reverse input terminal of the operational amplifier (53). A collector of the PNP transistor (10) is grounded and a base of the PNP transistor (10) is connected to an output terminal of the operational amplifier (53) and an output terminal (55). A current (I) is supplied to the current input terminal (51) while a first reference voltage (V.sub.REF1) is applied to the first reference voltage input terminal. The PNP transistor (10) is formed by CMOS processes. The current-voltage conversion circuit is manufactured in a shorter manufacturing time and at a reduced cost.

摘要翻译： 仅使用CMOS工艺即可获得能够进行对数压缩的电流 - 电压转换电路。 PNP晶体管（10）和电流输入端（51）的发射极共同连接到运算放大器（53）的反向输入端，而第一参考电压输入端连接到运算放大器 运算放大器（53）。 PNP晶体管（10）的集电极接地，并且PNP晶体管（10）的基极连接到运算放大器（53）的输出端子和输出端子（55）。 电流（I）被提供给电流输入端（51），而第一参考电压（VREF1）被施加到第一参考电压输入端。 PNP晶体管（10）由CMOS工艺形成。 电流 - 电压转换电路在较短的制造时间内以低成本制造。

公开(公告)号：US4184688A

公开(公告)日：1980-01-22

申请号：US923455

申请日：1978-07-10

申请人： Yoshimoto Omura ,  Hideo Hara ,  Isao Kawashima ,  Keisuke Sekiguchi ,  Kuninori Shino

发明人： Yoshimoto Omura ,  Hideo Hara ,  Isao Kawashima ,  Keisuke Sekiguchi ,  Kuninori Shino

IPC分类号： G11B3/085 ,  G11B3/095 ,  G11B3/12 ,  G11B17/06

CPC分类号： G11B3/127 ,  G11B3/08506 ,  G11B3/0857

摘要： A tone arm assembly for record players has first and second electro-magnetic motors operable for swinging a tone arm in vertical and horizontal directions, respectively, in respect to a record disc on a turntable, and a control circuit for controlling the first and second motors in such a manner that the tone arm is moved from a raised inoperative position to a lowered playing position, or from the lowered playing position to the raised inoperative position in response to control signals.

摘要翻译： 用于记录播放器的音臂组件具有第一和第二电磁马达，其可操作用于相对于转台上的记录盘在垂直和水平方向上摆动音调臂，以及控制电路，用于控制第一和第二电机 使得音调臂响应于控制信号从升高的非操作位置移动到降低的播放位置，或者从降低的播放位置移动到升高的非操作位置。

公开(公告)号：US4079946A

公开(公告)日：1978-03-21

申请号：US567052

申请日：1975-04-11

申请人： Hideo Hara ,  Isao Kawashima

发明人： Hideo Hara ,  Isao Kawashima

IPC分类号： G11B17/32 ,  G11B19/20 ,  G11B3/60 ,  F16F15/04

CPC分类号： G11B19/2009

摘要： A phonograph record turntable assembly comprises a rotatable turntable having a rubber or other elastically flexible sheet overlying a substantial portion of its upper surface and secured thereto at least along an edge or edges of the sheet for defining at least one sealed interior space which contains a fluid material, preferably in the form of a viscous liquid, so as to provide a cushioned, vibration-damping record supporting surface which conforms to the shape of a warped or otherwise distorted phonograph record placed thereon. In order to avoid the accumulation of the liquid at any one portion of the interior space when the turntable is not horizontally disposed, such interior space may be divided into a plurality of liquid-containing compartments which are isolated from each other, as by partitions therebetween, and/or each interior space or compartment may further contain absorbent material which takes up the viscous liquid. The vibration-damping properties of the turntable assembly may be enhanced by providing solid particles which float in the viscous liquid.

摘要翻译： 留声唱片记录转盘组件包括可旋转的转盘，其具有覆盖其上表面的大部分的橡胶或其它弹性柔性片，并且至少沿着片的边缘或边缘固定到其上，用于限定至少一个包含流体的密封内部空间 材料，优选为粘性液体的形式，以便提供一种缓冲的减振记录支撑表面，该支撑表面符合放置在其上的扭曲或其它扭曲的留声机记录的形状。 为了避免液体在内部空间的任何一部分的积聚，当转台不是水平设置时，这样的内部空间可以被分成多个彼此隔离的含液体室，如它们之间的分隔 ，和/或每个内部空间或隔室可以进一步包含吸收粘性液体的吸收材料。 可以通过提供在粘性液体中漂浮的固体颗粒来增强转盘组件的减振性能。