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21. 发明申请

US20080054163A1 LOGARITHMIC-COMPRESSION ANALOG-DIGITAL CONVERSION CIRCUIT AND SEMICONDUCTOR PHOTOSENSOR DEVICE 审中-公开
标题翻译：对数压缩模数转换电路和半导体光电子器件
公开(公告)号：US20080054163A1
公开(公告)日：2008-03-06
申请号：US11844736
申请日：2007-08-24
申请人： Hiroshi Suzunaga
发明人： Hiroshi Suzunaga
IPC分类号： H03M1/12 , G01J1/44
CPC分类号： H03M1/1235 , G01J1/44
摘要： A logarithmic-compression analog-digital conversion circuit, includes: a logarithmic amplifier; and a converter. The logarithmic amplifier is configured to logarithmically convert an input current to a voltage using forward characteristics of a p-n junction, and configured to output the voltage. The converter is configured to output a digital signal based on the output voltage of the logarithmic amplifier while reducing temperature dependence of the logarithmic amplifier by successively comparing the output voltage with a voltage generated from a reference voltage source which has a temperature dependence.
摘要翻译：一种对数压缩模数转换电路，包括：对数放大器; 和转换器。对数放大器被配置为使用p-n结的正向特性将输入电流对数转换为电压，并且被配置为输出电压。转换器被配置为基于对数放大器的输出电压输出数字信号，同时通过将输出电压与从具有温度依赖性的参考电压源产生的电压相比较来降低对数放大器的温度依赖性。

22. 发明授权

US07304594B2 Transmitting and receiving device and transmitting device and receiving device 有权
标题翻译：发射和接收设备和发射设备和接收设备
公开(公告)号：US07304594B2
公开(公告)日：2007-12-04
申请号：US11536251
申请日：2006-09-28
申请人： Shigeyuki Sakura , Hiroshi Suzunaga , Masaru Numano , Atsushi Iwata , Yoshitaka Murasaka , Toshifumi Imamura
发明人： Shigeyuki Sakura , Hiroshi Suzunaga , Masaru Numano , Atsushi Iwata , Yoshitaka Murasaka , Toshifumi Imamura
IPC分类号： H03M3/00
CPC分类号： H04B10/1141 , H04B14/026 , H04B14/06
摘要： According to one aspect of this invention, there is provided a transmitting and receiving device including a transmitting device having a pulse width modulation encoder which generates a pulse width signal having a pulse width corresponding to the binary digital signals outputted from the plurality of sigma-delta analog-to-digital conversion units, and a light-emitting element drive unit which generates and transmits an optical signal by causing a light-emitting element to emit light on the basis of the pulse width signal, and a receiving device having an optical reception unit which converts a current signal, obtained by receiving the optical signal by a light-receiving element, into the pulse width signal, and a pulse width demodulation decoder which reconstructs the binary digital signals of a plurality of channels on the basis of the pulse width signal.
摘要翻译：根据本发明的一个方面，提供了一种发送和接收装置，其包括具有脉冲宽度调制编码器的发送装置，该脉冲宽度调制编码器产生具有对应于从多个Σ-Δ输出的二进制数字信号的脉冲宽度的脉冲宽度信号模拟数字转换单元和通过使发光元件基于脉冲宽度信号发光而产生和发送光信号的发光元件驱动单元，以及具有光接收的接收装置将通过光接收元件接收光信号而获得的电流信号转换成脉冲宽度信号的单元，以及基于脉冲宽度重建多个通道的二进制数字信号的脉宽解调解码器信号。

23. 发明申请

US20050073489A1 LED drive circuit 审中-公开
标题翻译： LED驱动电路
公开(公告)号：US20050073489A1
公开(公告)日：2005-04-07
申请号：US10866699
申请日：2004-06-15
申请人： Hiroshi Suzunaga , Kazuo Imanishi , Akihiro Kawano
发明人： Hiroshi Suzunaga , Kazuo Imanishi , Akihiro Kawano
IPC分类号： G05F1/56 , G05F3/26 , G09G3/34 , H01L33/12 , H05B33/08 , H05B37/02
CPC分类号： G05F3/265 , G09G3/3406 , G09G2360/145 , H05B33/0827
摘要： An LED drive circuit according to an embodiment of the present invention comprises: a constant voltage source configured to supply a constant voltage; a current generating circuit configured to generate a current responsive to the impedance value of an impedance circuit connected to an external terminal, based upon the constant voltage supplied from the constant voltage source; and a current amplifying circuit configured to amplify the current generated by the current generating circuit to generate a drive current for driving LEDs.
摘要翻译：根据本发明的实施例的LED驱动电路包括：恒压源，被配置为提供恒定电压; 电流产生电路，被配置为基于从恒定电压源提供的恒定电压响应于连接到外部端子的阻抗电路的阻抗值产生电流; 以及电流放大电路，被配置为放大由电流发生电路产生的电流，以产生用于驱动LED的驱动电流。

24. 发明申请

US20050051704A1 Semiconductor photosensor device and portable terminal unit 有权
标题翻译：半导体光电传感器和便携式终端单元
公开(公告)号：US20050051704A1
公开(公告)日：2005-03-10
申请号：US10696001
申请日：2003-10-30
申请人： Yukiko Kashiura , Hiroshi Suzunaga
发明人： Yukiko Kashiura , Hiroshi Suzunaga
IPC分类号： G01J1/42 , G01J1/02 , G01J1/44 , H01L27/14 , H01L27/146 , H01L31/00 , H01L31/10 , H01L31/101 , H03K17/78 , H04M1/00
CPC分类号： G01J1/44 , H01L31/101
摘要： A semiconductor photosensor device which outputs a detection result when a trigger signal is inputted, comprises: a photodiode current arithmetic circuit which is in an operating state regardless of whether before or after the input of the trigger signal, and which outputs a photocurrent generated by light irradiation; a first amplifier which is in an operating state regardless of whether before or after the input of the trigger signal, and which amplifies and outputs the output of the photodiode current arithmetic circuit; and a second amplifier which is in a non-operating state before the input of the trigger signal, wherein the second amplifier shifts to an operating state upon receiving the trigger signal, and amplifies and outputs the output of the first amplifier.
摘要翻译：一种当输入触发信号时输出检测结果的半导体光电传感器装置，包括：光电二极管电流运算电路，其工作状态与触发信号输入之前或之后无关，并输出由光产生的光电流照射; 无论触发信号的输入之前或之后处于工作状态的第一放大器，并放大并输出光电二极管电流运算电路的输出; 以及在触发信号的输入之前处于非操作状态的第二放大器，其中第二放大器在接收到触发信号时转换到操作状态，并放大并输出第一放大器的输出。

25. 发明授权

US5600173A Semiconductor device capable of detecting a light position 失效
标题翻译：能够检测光位置的半导体装置
公开(公告)号：US5600173A
公开(公告)日：1997-02-04
申请号：US385203
申请日：1995-02-08
申请人： Hiroshi Suzunaga
发明人： Hiroshi Suzunaga
IPC分类号： H01L31/16 , H01L31/02 , H01L31/10 , H01L31/00
CPC分类号： H01L31/02024
摘要： A semiconductor position sensitive detector has an epitaxial layer of a second conductivity type formed on a semiconductor substrate of a first conductivity type. A first diffusion layer of the first conductivity type is formed in said epitaxial layer so as to isolate a rectangular portion of this epitaxial layer from the rest. A second diffusion layer of the first conductivity type is further formed in said rectangular portion of the epitaxial layer, in order to increase the resistance value of the epitaxial layer. In addition, due to the formation of the second diffusion layer, two p-n junctions having photoelectric transfer ability are formed in this device. So, a semiconductor position sensitive detector having excellent photoelectric characteristics can be obtained.
摘要翻译：半导体位置敏感检测器具有形成在第一导电类型的半导体衬底上的第二导电类型的外延层。在所述外延层中形成第一导电类型的第一扩散层，以将该外延层的矩形部分与其余部分隔离。为了增加外延层的电阻值，在外延层的所述矩形部分中进一步形成第一导电类型的第二扩散层。此外，由于第二扩散层的形成，在该器件中形成具有光电转移能力的两个p-n结。因此，可以获得具有优异的光电特性的半导体位置敏感检测器。

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