公开(公告)号：US5345167A

公开(公告)日：1994-09-06

申请号：US56109

申请日：1993-05-03

申请人： Kazuo Hasegawa ,  Shin Sugifune

发明人： Kazuo Hasegawa ,  Shin Sugifune

IPC分类号： H03K17/78 ,  G05F1/56 ,  G05B24/02

CPC分类号： G05F1/56 ,  Y10S323/902

摘要： A light emitting diode driving circuit for supplying a driving pulse to a light emitting diode to thereby cause the light emitting diode to intermittently emit light is disclosed which comprises a clamping circuit, a photodiode disposed in the vicinity of the light emitting diode for detecting the optical output power of the light emitting diode, an AC amplifier having its DC operating point stabilized by means of a DC feedback circuit for AC amplifying the detected output from the photodiode, a shaping circuit for shaping the output amplified signal from the AC amplifier, and a comparison circuit for comparing for voltage the output shaped signal from the shaping circuit and a reference voltage, in which the clamping voltage of the clamping circuit is controlled by the output of the comparison circuit and, thereby, the optical output power of the light emitting diode is maintained constant.

摘要翻译： 公开了一种用于向发光二极管提供驱动脉冲从而使发光二极管间歇地发光的发光二极管驱动电路，其包括钳位电路，设置在发光二极管附近的光电二极管，用于检测光 发光二极管的输出功率，具有通过DC反馈电路稳定的DC工作点的AC放大器，用于对来自光电二极管的检测输出进行AC放大;整流电路，用于对来自AC放大器的输出放大信号进行整形;以及 用于比较来自整形电路的输出整形信号的电压与参考电压的比较电路，其中钳位电路的钳位电压由比较电路的输出控制，从而使发光二极管的光输出功率 保持不变。

公开(公告)号：US5087879A

公开(公告)日：1992-02-11

申请号：US585337

申请日：1990-09-19

申请人： Shin Sugifune ,  Hiraku Abe

发明人： Shin Sugifune ,  Hiraku Abe

IPC分类号： G01P3/487 ,  G01B7/14 ,  G01D5/245

CPC分类号： G01B7/14 ,  Y10T29/49007

摘要： A magnetic rotation sensor is disclosed, in which by raising the precision of the size between a first hole for positioning a magnetic rotation drum and second holes for positioning pin guides and at the same time by keeping the outer diameter of the pin guides at a high precision, the gap between the drum described above and a sensor supported by the pin guides can be kept precisely almost without any adjustment.

摘要翻译： 公开了一种磁旋转传感器，其中通过提高用于定位磁旋转鼓的第一孔和用于定位销引导件的第二孔之间的尺寸精度，并且同时通过将销引导件的外径保持在高度 精确地，可以几乎没有任何调整地精确地保持上述鼓之间的间隙和由销引导件支撑的传感器。

公开(公告)号：US5648650A

公开(公告)日：1997-07-15

申请号：US512052

申请日：1995-08-07

申请人： Shin Sugifune ,  Tsutomu Kanno ,  Hajime Nabeya

发明人： Shin Sugifune ,  Tsutomu Kanno ,  Hajime Nabeya

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10564 ,  G06K7/10574 ,  G06K7/10772 ,  G06K2207/1018

摘要： An optical reading apparatus (bar code reader) including a plurality of light emitting elements, each light emitting element emitting light in different directions onto an information recording surface which has a linear recording (bar code pattern) printed thereon. A light receiving element receives reflected light from the information recording surface and generates a recording medium read signal which is transmitted to a signal processing section for converting the recording medium read signal into a display signal. The recording medium read signal is also transmitted to a regular reflection detection section. When the regular reflection detection section detects the occurrence of a regular reflection condition from the recording medium read signal, the regular reflection detection section transmits a regular reflection detection signal to a driving controlling section which controls light emission from the plurality of light emitting elements. In response to the regular reflection detection signal, the controlling driving section turns off the light emitting element whose emitted light is causing the regular reflection condition, thereby eliminating the occurrence of the regular reflection condition.

摘要翻译： 一种包括多个发光元件的光学读取装置（条形码阅读器），每个发光元件将不同方向发光的信号记录在其上印有线性记录（条形码图案）的信息记录表面上。 光接收元件接收来自信息记录表面的反射光，并产生一个记录介质读信号，该信号被传送到信号处理部分，用于将记录介质读信号转换成显示信号。 记录介质读取信号也被传送到正反射检测部分。 当正常反射检测部分从记录介质读取信号中检测到正常反射条件的发生时，正反射检测部分将正常反射检测信号发送到控制来自多个发光元件的发光的驱动控制部分。 响应于规则反射检测信号，控制驱动部分关闭发出的光引起正常反射条件的发光元件，从而消除了正常反射条件的发生。

公开(公告)号：US5701001A

公开(公告)日：1997-12-23

申请号：US782137

申请日：1997-01-13

申请人： Shin Sugifune ,  Tsutomu Kanno ,  Hajime Nabeya

发明人： Shin Sugifune ,  Tsutomu Kanno ,  Hajime Nabeya

IPC分类号： G06K7/10

CPC分类号： G06K7/10851 ,  G06K7/10564 ,  G06K7/10574 ,  G06K7/10772 ,  G06K2207/1018

摘要： An optical reading apparatus (bar code reader) including a plurality of light emitting elements, each light emitting element emitting light in different directions onto an information recording surface which has a linear recording (bar code pattern) printed thereon. A light receiving element receives reflected light from the information recording surface and generates a recording medium read signal for each light emitting element which is transmitted to a signal processing section. The signal processing section includes a plurality of conversion processing routes for converting the recording medium read signals from the plurality of light emitting elements into a plurality of display signals. Each of the display signals is then decoded separately. When a regular reflection condition occurs in a first display signal (that is, the first display signal does not produce a valid code), but does not occur in a second display signal (that is, the second display signal produces a valid code), then the signal processing circuit only outputs the accurately decoded display signal, thereby eliminating errors caused by the occurrence of the regular reflection condition.

摘要翻译： 一种包括多个发光元件的光学读取装置（条形码阅读器），每个发光元件将不同方向发光的信号记录在其上印有线性记录（条形码图案）的信息记录表面上。 光接收元件接收来自信息记录表面的反射光并且产生用于发送到信号处理部分的每个发光元件的记录介质读取信号。 信号处理部分包括用于将来自多个发光元件的记录介质读取信号转换为多个显示信号的多个转换处理路线。 然后分别对每个显示信号进行解码。 当在第一显示信号（即，第一显示信号不产生有效代码）中发生常规反射条件时，但是在第二显示信号（即，第二显示信号产生有效代码）中不发生， 那么信号处理电路仅输出精确解码的显示信号，从而消除由正常反射条件的发生引起的误差。