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21. 发明授权

US06246282B1 First stage amplifier circuit 失效
标题翻译：第一级放大器电路
公开(公告)号：US06246282B1
公开(公告)日：2001-06-12
申请号：US09433288
申请日：1999-11-03
申请人： Hiroshi Oono , Masaaki Yokomizo
发明人： Hiroshi Oono , Masaaki Yokomizo
IPC分类号： H03F136
CPC分类号： H03F3/087 , H03G1/0088 , H03G3/3084
摘要： A first stage amplifier circuit includes an amplifier, a variable feedback resistance, a comparator and a shift register. The amplifier amplifies an input signal supplied thereto. The variable feedback resistance includes two or more feedback resistors and one or more switches for changing the connection of the feedback resistors and thereby changing the composite resistance of the feedback resistors. The variable feedback resistance is connected between the output terminal and the input terminal of the amplifier. The comparator judges whether or not the output signal of the amplifier exceeds a predetermined threshold value. The shift register has one or more stages corresponding to the switches of the variable feedback resistance. The shift register operates the switches of the variable feedback resistance one by one and successively reduces the composite resistance of the variable feedback resistance as long as the output signal of the amplifier is judged by the comparator to exceed the threshold value. Therefore, the gain of the amplifier is controlled adequately by the digital feedback resistance control circuit, thereby both a wide dynamic range and high speed response of the first stage amplifier circuit are realized, and thereby saturation of the amplifier is prevented and thus duty distortion of high speed signals in the amplification is eliminated.
摘要翻译：第一级放大器电路包括放大器，可变反馈电阻，比较器和移位寄存器。放大器放大提供给它的输入信号。可变反馈电阻包括两个或多个反馈电阻器和一个或多个开关，用于改变反馈电阻器的连接，从而改变反馈电阻器的复合电阻。可变反馈电阻连接在放大器的输出端子和输入端子之间。比较器判断放大器的输出信号是否超过预定阈值。移位寄存器具有与可变反馈电阻的开关相对应的一个或多个级。移位寄存器一个接一个地操作可变反馈电阻的开关，并且只要放大器的输出信号由比较器判断为超过阈值，就连续地减小可变反馈电阻的复合电阻。因此，通过数字反馈电阻控制电路充分控制放大器的增益，从而实现了第一级放大器电路的宽动态范围和高速响应，从而防止了放大器的饱和，因此占空比变形消除了放大中的高速信号。

22. 发明授权

US5761230A Laser-diode driving circuit with temperature compensation 失效
标题翻译：具有温度补偿的激光二极管驱动电路
公开(公告)号：US5761230A
公开(公告)日：1998-06-02
申请号：US651746
申请日：1996-05-22
申请人： Hiroshi Oono , Masaaki Yokomizo
发明人： Hiroshi Oono , Masaaki Yokomizo
IPC分类号： H01L27/15 , H01S5/042 , H01S5/068 , H01S3/00
CPC分类号： H01S5/06804 , H01S5/042
摘要： A laser-diode driving circuit that ensures that the optical output of a laser diode will be stable within a wide temperature range. This circuit includes a reference voltage generator for generating a reference voltage, a control voltage generator for generating a control voltage, an amplifier for producing an amplified output signal corresponding to the difference between the reference voltage and the control voltage, and a driving current generator for generating a driving or operating current for driving a laser diode. The driving current generator is driven by the amplified output signal. The control voltage has a temperature dependence approximately the same as that required for keeping an optical output of the laser diode at a specified level independent of the ambient temperature change. Preferably, the control voltage generator contains a p-n junction diode for producing a temperature-dependent voltage, and a thermistor for compensating the temperature-dependent voltage to thereby produce said control voltage having an exponential characteristic with respect to the ambient temperature.
摘要翻译：一种激光二极管驱动电路，确保激光二极管的光输出在宽温度范围内稳定。该电路包括用于产生参考电压的参考电压发生器，用于产生控制电压的控制电压发生器，用于产生对应于参考电压和控制电压之间的差的放大的输出信号的放大器，以及驱动电流发生器，产生用于驱动激光二极管的驱动或工作电流。驱动电流发生器由放大的输出信号驱动。控制电压的温度依赖性与将激光二极管的光输出保持在与环境温度变化无关的规定水平所需的温度依赖性大致相同。优选地，控制电压发生器包括用于产生与温度有关的电压的p-n结二极管，以及用于补偿温度依赖电压的热敏电阻，从而产生相对于环境温度具有指数特性的所述控制电压。

23. 发明授权

US4701674A Optical beam modulation and deflection device 失效
标题翻译：光束调制和偏转装置
公开(公告)号：US4701674A
公开(公告)日：1987-10-20
申请号：US29356
申请日：1987-03-23
申请人： Hiroshi Oono , Shigenori Oosaka
发明人： Hiroshi Oono , Shigenori Oosaka
IPC分类号： G02B26/10 , G02B26/12 , G02B27/00 , G06K7/10 , G06K15/12 , H01S5/00 , H04N1/06 , H04N1/12 , H01J7/44
CPC分类号： G06K7/10871 , G02B26/121 , G02B26/127 , G06K15/1204 , H04N1/0607 , H04N1/0628 , H04N1/0664 , H04N1/12 , H04N1/126 , H04N2201/0424
摘要： An optical beam modulation and deflection device having a semiconductor laser mounted on a rotator which employs a rotating transformer so as to supply electrical power to the rotator in a contactless manner.
摘要翻译：一种具有安装在旋转器上的半导体激光器的光束调制和偏转装置，其采用旋转变压器以便以非接触方式向转子提供电力。

24. 发明授权

US4125842A Method for laser recording using zeroth order light and heat deformable medium 失效
标题翻译：使用零级光和热变形介质的激光记录方法
公开(公告)号：US4125842A
公开(公告)日：1978-11-14
申请号：US739776
申请日：1976-11-08
申请人： Masahiro Ohnishi , Hiroshi Oono , Katutosi Tozaki
发明人： Masahiro Ohnishi , Hiroshi Oono , Katutosi Tozaki
IPC分类号： B41M5/26 , B41J2/32 , G01D15/10 , G02B27/00 , G02F1/11 , G02F1/33 , G11B7/0025 , G11B7/125 , G11B7/128 , H01S3/00 , H01S3/106 , H04N1/036 , H04N1/23 , G01D15/14
CPC分类号： G11B7/128 , G01D15/10 , G11B7/0025 , H04N1/036
摘要： Acousto-optically modulated zeroth order light from a laser source is recorded on a heat sensitive medium having a threshold deformation level.
摘要翻译：来自激光源的声光调制零级光被记录在具有阈值变形水平的热敏介质上。

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