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1. 发明授权

US4943736A Waveform converting apparatus 失效
标题翻译：波形转换装置
公开(公告)号：US4943736A
公开(公告)日：1990-07-24
申请号：US301581
申请日：1989-01-26
申请人： Seiichiro Kihara , Naonori Okabayashi
发明人： Seiichiro Kihara , Naonori Okabayashi
IPC分类号： G05F3/26 , H03K5/08
CPC分类号： G05F3/265 , H03K5/082
摘要： A waveform converting apparatus includes a first and a second common-emitter type transistors as part of a first and second emitter follower circuits respectively. The follower circuits are used for converting the impedances of an input signal independently. A first constant current supply is connected to the emitter of the first transistor provided in the first emitter follower circuit, and a second constant current supply is connected to the emitter of the second transistor provided in the second emitter follower circuit. The constant current flowing in the first emitter follower circuit is adjusted to be of a smaller value than the constant current flowing in the second emitter follower circuit. With this difference in current value there is a difference between the base-emitter voltage of the first transistor in the first emitter follower circuit and the base-emitter voltage of the second transistor in the second emitter follower circuit on the basis of the ratio of the first and second constant currents mentioned above. Also with the above described difference in currents a ceramic chip capacitor can be used in an integrating circuit of the converting apparatus.
摘要翻译：波形转换装置分别包括作为第一和第二射极跟随器电路的一部分的第一和第二共发射极型晶体管。跟随器电路用于独立地转换输入信号的阻抗。第一恒流源连接到设置在第一射极跟随器电路中的第一晶体管的发射极，第二恒流源连接到设置在第二射极跟随器电路中的第二晶体管的发射极。在第一射极跟随器电路中流动的恒定电流被调节为比在第二射极跟随器电路中流动的恒定电流更小的值。由于电流值的差异，第一射极跟随器电路中的第一晶体管的基极 - 发射极之间的电压与第二发射极跟随器电路中的第二晶体管的基极 - 发射极之间的电压基于上述第一和第二恒定电流。而且，上述电流差也可以在转换装置的积分电路中使用陶瓷片状电容器。

2. 发明授权

US4420750A Alphanumeric visual display of the matrix type 失效
标题翻译：矩阵类型的字母数字视觉显示
公开(公告)号：US4420750A
公开(公告)日：1983-12-13
申请号：US135156
申请日：1980-03-28
申请人： Naonori Okabayashi
发明人： Naonori Okabayashi
IPC分类号： G04G9/00 , G04G9/08 , G09G3/20 , G09G3/00
CPC分类号： G04G9/087 , G09G3/20
摘要： An alphanumeric visual display of the matrix type for use in electronic digital wristwatches and similar devices is adapted to display relatively lengthy numerical or character information on a relatively short display area through a consistently varying display fashion. More specifically, display operation takes place in such a manner as to increase an enabled or disabled region (as defined by the number of columns enabled or disabled, respectively) progressively with the passage of time through the utilization of a train of sequentially phase shifted gate signals.
摘要翻译：用于电子数字手表和类似装置的矩阵类型的字母数字视觉显示器适于通过不断变化的显示方式在相对较短的显示区域上显示相对冗长的数字或字符信息。更具体地，显示操作以这样的方式进行，即通过使用一系列顺序相移的门，随着时间的推移逐渐增加启用或禁用的区域（由分别启用或禁用的列数分别定义）信号。

3. 发明授权

US5321254A Light-receiving and amplyfying device capable of widening an AC operation range 失效
标题翻译：光接收装置能够扩大AC工作范围
公开(公告)号：US5321254A
公开(公告)日：1994-06-14
申请号：US67150
申请日：1993-05-26
申请人： Naruichi Yokogawa , Naonori Okabayashi , Koichi Hanafusa
发明人： Naruichi Yokogawa , Naonori Okabayashi , Koichi Hanafusa
IPC分类号： G11B7/13 , H03F3/08 , H03F3/343 , H03F3/347 , H01J40/14
CPC分类号： H03F3/087 , G11B7/13
摘要： A light-receiving and amplifying device includes a plurality of photodiodes and amplifier circuits which receive inputs from anodes of the photodiodes. There is provided a first current mirror circuit for outputting a second current having the same magnitude as that of a first current which is a sum of currents flowing through cathodes of the photodiodes. Further provided is a second current mirror circuit which receives the second current from the first current mirror circuit and receives divided currents each having an even magnitude from the anodes of the photodiodes. An AC operation range of the light-receiving and amplifying device is widened in a simple manner at a low cost without significant dimensional increase of the device.
摘要翻译：光接收和放大装置包括多个光电二极管和放大器电路，其接收来自光电二极管的阳极的输入。提供了第一电流镜电路，用于输出与作为流过光电二极管的阴极的电流之和的第一电流具有相同幅度的第二电流。还提供了第二电流镜电路，其接收来自第一电流镜电路的第二电流，并且从光电二极管的阳极接收各自具有均匀幅度的分压电流。光接收放大装置的AC操作范围以简单的方式以较低的成本加宽，而不会显着地增加装置的尺寸。

4. 发明授权

US5483200A Light-receiving and amplifying device capable of switching between gain levels at high speed and obtaining a sufficient signal-to-noise ratio over a wide range in quantity of incident light 失效
标题翻译：光接收和放大装置能够在高速度的增益电平之间切换并且在入射光量的宽范围内获得足够的信噪比
公开(公告)号：US5483200A
公开(公告)日：1996-01-09
申请号：US257741
申请日：1994-06-08
申请人： Naonori Okabayashi , Koichi Hanafusa , Masaya Ohnishi
发明人： Naonori Okabayashi , Koichi Hanafusa , Masaya Ohnishi
IPC分类号： H03F3/08 , H03G1/00 , H03G3/30 , H03G3/12
CPC分类号： H03G1/0088 , H03F3/08 , H03G3/3084
摘要： There is provided a light-receiving and amplifying device capable of changing its gain at high speed. A cathode of a photodiode PD is connected to a power source V.sub.CC via a current mirror circuit. An anode of the photodiode PD is connected to an input of an amplifier circuit AMP. The amplifier circuit AMP receives a photocurrent from the photodiode PD, converts the photocurrent into a voltage, and amplifies the voltage to form an output signal V.sub.OUT. A control signal of a current having the same magnitude as that of the photocurrent and output from the current mirror circuit is input to a control input terminal of a gain switching circuit. The gain switching circuit is composed of a resistor Rf.sub.1, a resistor Rf.sub.2, and a switch SW. The resistor Rf.sub.1 is connected across the input and the output of the amplifier circuit AMP, and the resistor Rf.sub.2 and the switch SW connected in series are connected across the input and the output of the amplifier circuit AMP.
摘要翻译：提供能够以高速度改变其增益的光接收放大装置。光电二极管PD的阴极通过电流镜电路连接到电源VCC。光电二极管PD的阳极连接到放大器电路AMP的输入端。放大电路AMP从光电二极管PD接收光电流，将光电流转换为电压，并放大电压以形成输出信号VOUT。具有与电流镜像电路相同幅值的电流的控制信号输入到增益切换电路的控制输入端。增益切换电路由电阻Rf1，电阻Rf2和开关SW组成。电阻器Rf1连接在放大器电路AMP的输入和输出端上，串联连接的电阻器Rf2和开关SW跨过放大器电路AMP的输入端和输出端。

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