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1. 发明授权

US6137577A Method and apparatus for measuring dimensions of objects on a conveyor 有权
标题翻译：用于测量输送机上物体尺寸的方法和装置
公开(公告)号：US6137577A
公开(公告)日：2000-10-24
申请号：US432597
申请日：1999-11-03
申请人： Mark R. Woodworth
发明人： Mark R. Woodworth
IPC分类号： G01B11/00 , G01B11/04 , G01B11/24
CPC分类号： G01B11/00 , G01B11/04
摘要： A method and apparatus for measuring the length, width, and height of rectangular solid objects moving on a conveyor. The apparatus includes a light curtain, two laser triangulation range finders, and a pulse tachometer mounted on a frame around a conveyor. As an object is conveyed through the frame, measurements from each of the sensors are correlated by a digital computer to estimate the length, width and height of the object. The method and apparatus does not require a break in the surface of the conveyor, and is insensitive to object placement and orientation on the conveyor.
摘要翻译：用于测量在输送机上移动的矩形固体物体的长度，宽度和高度的方法和装置。该装置包括一个光幕，两个激光三角测距仪和一个安装在传送带周围框架上的脉冲转速计。当通过框架传送物体时，来自每个传感器的测量值由数字计算机相关，以估计物体的长度，宽度和高度。该方法和设备不需要在输送机的表面上断裂，并且对输送机上的物体放置和取向不敏感。

2. 发明授权

US6045044A Method and apparatus for reducing bandwidth limited noise in bar code scanner 有权
标题翻译：用于减少条形码扫描器带宽限制噪声的方法和装置
公开(公告)号：US6045044A
公开(公告)日：2000-04-04
申请号：US218157
申请日：1998-12-22
申请人： Edward P. Coleman
发明人： Edward P. Coleman
IPC分类号： G06K7/10
CPC分类号： G06K7/10584
摘要： A bar code scanner system includes a laser light source that periodically produces a light beam that is swept across a bar code label. The laser light source is periodically turned "on" and "off" according to a duty cycle. A detector produces a first electric signal representative of received bar code label reflected light and ambient light when the laser light source is on, and produces a second electric signal representative of received ambient light when the light source is "off". A demodulator circuit, coupled to the detector, provides a first gain to the first electric signal and provides a second gain to the second electric signal. The gains applied are selected such that the signal and signal component produced solely as a result of the ambient light will significantly cancel out one another when the signals are combined. A filter, coupled to the demodulator circuit, receives the electric signals from the demodulator circuit and reduces out-of-band signal components such as noise. When the duty cycle of the laser light source is equal to 50%, the first gain is equal to the inverse of the second gain.
摘要翻译：条形码扫描器系统包括周期性地产生扫过条形码标签的光束的激光光源。根据占空比周期性地将激光源“开”和“关”。检测器产生表示当激光光源接通时接收的条形码标签反射光和环境光的第一电信号，并且当光源“关闭”时产生表示接收到的环境光的第二电信号。耦合到检测器的解调器电路为第一电信号提供第一增益，并向第二电信号提供第二增益。施加的增益被选择为使得仅当作为环境光的结果产生的信号和信号分量将在信号组合时彼此显着抵消。耦合到解调器电路的滤波器从解调器电路接收电信号并减少诸如噪声的带外信号分量。当激光光源的占空比等于50％时，第一增益等于第二增益的倒数。

3. 发明授权

US6024284A Wireless bar code scanning system 失效
标题翻译：无线条码扫描系统
公开(公告)号：US6024284A
公开(公告)日：2000-02-15
申请号：US137510
申请日：1998-08-20
申请人： William M. Schmid , James R. Behrens
发明人： William M. Schmid , James R. Behrens
IPC分类号： G06F3/00 , G06F3/023 , G06K7/10
CPC分类号： G06F3/002 , G06F3/023 , G06K7/10
摘要： A wireless scanning system for a bar code scanner and a personal computer. The bar code scanner sends raw bar code data via a wireless connection to the personal computer. The personal computer decodes the raw bar code data, and sends the digitized version of the raw bar code data to a keyboard buffer, in order to simulate data from the keyboard at the personal computer based on the raw bar code data.
摘要翻译：用于条码扫描器和个人计算机的无线扫描系统。条形码扫描器通过无线连接将原始条形码数据发送到个人计算机。个人计算机对原始条形码数据进行解码，并将原始条形码数据的数字化版本发送到键盘缓冲器，以便基于原始条形码数据来模拟来自个人计算机的键盘的数据。

4. 发明授权

US5686716A Bar code void and spot discrimination 失效
标题翻译：条形码无效和现货歧视
公开(公告)号：US5686716A
公开(公告)日：1997-11-11
申请号：US644443
申请日：1996-05-13
申请人： Chay La
发明人： Chay La
IPC分类号： G06K7/14 , G06K7/10
CPC分类号： G06K7/1465 , G06K7/14
摘要： A void and spot discrimination apparatus and method for successfully decoding bar code symbols having imperfections therein. A first and a second scan are performed, and a signal return is obtained, in which information is obtained related to a smallest size black bar and white space, as well as a largest size black bar and white space. The signal returns from the first and second scans is sent to a decoder, and third and fourth scans are performed. The signal returns from the third and fourth scans are altered based on the smallest/largest sizes obtained from the two previous scans, in order to eliminate potential ink spreads and print voids. The process is alternated in this manner until a successful bar code decoding is made.
摘要翻译：一种用于成功地解码其中存在缺陷的条形码符号的空白和点辨别装置和方法。执行第一和第二扫描，并且获得信号返回，其中获得与最小尺寸的黑条和白色空间相关的信息以及最大尺寸的黑条和空白。从第一和第二扫描返回的信号被发送到解码器，并且执行第三和第四扫描。基于从两个先前扫描获得的最小/最大尺寸，第三和第四扫描的信号返回，以消除潜在的油墨扩散和打印空隙。该过程以这种方式交替，直到成功进行条形码解码。

5. 发明授权

US5682028A Circuitry for bar code scanners 失效
标题翻译：电路条码扫描器
公开(公告)号：US5682028A
公开(公告)日：1997-10-28
申请号：US283013
申请日：1994-07-29
申请人： Edward P. Coleman
发明人： Edward P. Coleman
IPC分类号： G06K7/10
CPC分类号： G06K7/10851
摘要： In order to decode from electrical signals derived by a photodetector which responds to the light returned from the relatively less reflective (black) bars of the code and relatively more reflective (white) bars (also known as spaces), these signals must be digitized into a digital data signal where the black and white bars are represented by opposite logic levels, (for example logic high voltage levels representing the black bars, and logic low voltage levels representing the white bars). The high logic levels are pulses which are separated in time by the low logic levels. A cascade of amplifiers is used to amplify the bar code signal from the photo detector. An amplifier having a logarithmic signal compression characteristic is included in the cascade, preferably after an amplifier which serves to differentiate the signal. The amplified signal is applied to a digitizer including a comparator which is sensitive only to the leading edge. Additional features are networks which enable the maximum gain of amplifiers in the cascade to be varied in accordance with a digital code, amplifier circuitry which provides linear amplification until the signal level reaches a threshold at which time amplification follows the logarithmic compression characteristic, hysteresis which prevents the comparator from being reset until a transition between a signal corresponding to black and white bars is detected, which hysteresis is a fixed voltage level, and circuits for setting the comparator to a state corresponding to a white bar (logic low).
摘要翻译：为了从由代码相对较少反射（黑色）条和相对更反射（白色）条（也称为空格））反射的光响应的光检测器导出的电信号进行解码，这些信号必须被数字化为数字数据信号，其中黑色和白色条由相反的逻辑电平表示（例如表示黑条的逻辑高电压电平，以及表示白色条的逻辑低电压电平）。高逻辑电平是通过低逻辑电平在时间上分离的脉冲。放大器的级联用于放大来自光电检测器的条形码信号。具有对数信号压缩特性的放大器包括在级联中，优选地在用于区分信号的放大器之后。放大的信号被施加到包括仅对前沿敏感的比较器的数字转换器。另外的特征是能够使级联中的放大器的最大增益根据数字码变化的网络，放大器电路提供线性放大，直到信号电平达到阈值，此时放大遵循对数压缩特性，滞后可防止检测到比较器被复位直到检测到与黑条和白条之间的信号之间的转变，哪个滞后是固定电压电平，以及用于将比较器设置为对应于白条（逻辑低）的状态的电路。

6. 发明授权

US5663551A Boot with replaceable optical element for a bar code scanner 失效
标题翻译：用可更换的光学元件用于条形码扫描器
公开(公告)号：US5663551A
公开(公告)日：1997-09-02
申请号：US580241
申请日：1995-12-28
申请人： L. Michael Hone , Vincent T. LaManna
发明人： L. Michael Hone , Vincent T. LaManna
IPC分类号： G06K7/10
CPC分类号： G06K7/10881 , G06K7/1098
摘要： A hand-held bar code scanner has a removable boot to hold a field-replaceable optical element, which is sandwiched between an opening formed at the nose section of the scanner housing and the face section of the boot. The replaceable optical element can be, for example, a transparent element, filter, lens, or Brewster Window.
摘要翻译：手持式条形码扫描器具有可拆卸的外壳，用于固定可替换的光学元件，该光学元件被夹在形成在扫描器外壳的鼻部部分的开口与护罩的面部之间。可替换的光学元件可以是例如透明元件，滤光器，透镜或布鲁斯特窗口。

7. 发明授权

US5633641A Analog to digital converter with continuous conversion cycles and large input signal range 失效
标题翻译：具有连续转换周期和大输入信号范围的模数转换器
公开(公告)号：US5633641A
公开(公告)日：1997-05-27
申请号：US582729
申请日：1996-01-04
申请人： Edward P. Coleman, Jr.
发明人： Edward P. Coleman, Jr.
IPC分类号： H03M1/46 , H03M1/34
CPC分类号： H03M1/46
摘要： A successive approximation A/D having dual comparators for allowing a larger range of analog input signals to be converted into digital form. One comparator is an N-channel device, and the other comparator is a P-channel device. The A/D switches to either the N-channel device or the P-channel device based upon whether the first two comparisons the determine the most-significant bit and the next-most significant bit are a "11", in which the N-channel device is selected, or anything else, in which the P-channel device is selected. Switching circuitry is included to output the proper comparator based on these two comparisons.Control circuitry is also provided to allow for successive conversions using only a single address read. A one-half clock cycle reset occurs at the start of every MSB comparison for every n-bit read, and this reset goes to every component in the A/D except the latch for the LSB, which must be held for at least one more clock cycle before since it has not yet been output to the data bus as yet. Gate circuitry is also added to the input of the D/A portion of the A/D, in which the LSB is not allowed to be input to the D/A until after the MSB comparison has been performed for the next n-bit read.
摘要翻译：具有用于允许更大范围的模拟输入信号被转换成数字形式的双比较器的逐次逼近A / D。一个比较器是N沟道器件，另一个比较器是P沟道器件。基于前两个比较确定最高有效位和下一个最高有效位是否为“11”，A / D切换到N沟道器件或P沟道器件，其中N- 选择通道设备，或者选择P通道设备的任何其他设备。包括开关电路以根据这两个比较输出正确的比较器。还提供控制电路以允许仅使用单个地址读取的连续转换。在每个n位读取的每个MSB比较开始时都会发生半个时钟周期复位，并且该复位将进入A / D中的每个分量，但LSB的锁存器必须保持至少一个之前的时钟周期，因为它还没有输出到数据总线。门电路也被添加到A / D的D / A部分的输入，其中LSB不允许输入到D / A，直到对于下一个n位读取执行MSB比较为止。

8. 发明授权

US5629510A Bar code scanning and reading apparatus with an oscillating scanning engine 失效
标题翻译：带扫描引擎的条码扫描和读取装置
公开(公告)号：US5629510A
公开(公告)日：1997-05-13
申请号：US332205
申请日：1994-10-31
申请人： Anna M. Quinn , Jay M. Eastman
发明人： Anna M. Quinn , Jay M. Eastman
IPC分类号： G02B26/10 , G06K7/10
CPC分类号： G06K7/1098 , G02B26/10 , G06K7/10653 , G06K2207/1013 , G06K2207/1016
摘要： An improved miniature scanning module for scanning and reading data fields having images or symbols such as bar codes, adapted to be included in a scanning application such as a portable transaction terminal. The scan engine of the module has an oscillator apparatus in which at least one side of a vertical coil cuts lines of magnetic force from an independent fixed magnet assembly and has a rotor and a stator which are molded interconnect devices in which electrical circuits are formed by surface plating or printing during multiple-shot molding of the parts. The rotor is supported by a plurality of metal alloy flexures depending from the stator, which flexures both mechanically support the rotor and transmit electrical power and signals between control circuitry on one or more printed circuit boards on the stator and electrical elements on the rotor. A semiconductor laser diode mounted on the rotor scans in one dimension when the rotor oscillates. A collection optic such as a parabolic mirror mounted on the rotor adjacent to the scanning laser also oscillates with the rotor and collects and directs return light to a photodetector mounted on the stator at the focal point of the collection optic. The flexures define an axis passing through the photodetector, about which the rotor oscillates, and thus return light from which data representing bar codes can be derived is detectable at all angles of oscillation.
摘要翻译：一种改进的微型扫描模块，用于扫描和读取具有适于包括在诸如便携式交易终端的扫描应用中的诸如条形码的图像或符号的数据字段。模块的扫描引擎具有振荡器装置，其中垂直线圈的至少一侧从独立的固定磁体组件切割出磁力线，并且具有转子和定子，其是模制的互连装置，其中电路由表面电镀或多次成型时的印刷。转子由定子悬挂的多个金属合金挠曲件支撑，定子两者弯曲两者机械地支撑转子并在定子上的一个或多个印刷电路板上的转子上的电路元件之间的控制电路之间传递电力和信号。当转子振荡时，安装在转子上的半导体激光二极管在一个维度上扫描。诸如安装在与扫描激光器相邻的转子上的抛物面反射镜的收集光学器件也与转子一起振荡并收集并引导返回光到安装在收集光学器件的焦点处的定子上的光电检测器。挠曲件限定了通过光电检测器的轴，转子围绕其旋转，并且因此可以在所有振荡角度下检测出能够导出代表条形码的数据的光。

9. 发明授权

US5612529A System for bar code reading and scanning with automatic gain control 失效
标题翻译：具有自动增益控制的条码读取和扫描系统
公开(公告)号：US5612529A
公开(公告)日：1997-03-18
申请号：US332015
申请日：1994-10-31
申请人： Edward P. Coleman
发明人： Edward P. Coleman
IPC分类号： G06K7/10
CPC分类号： G06K7/10851 , G06K2207/1013 , G06K2207/1018
摘要： A system for bar code reading and scanning is provided having automatic gain control for accurate reading of bar codes over a range of distance. An amplifier within the system provides a plurality of selectable amplification gain levels for increasing the size of the signal received by a digitizing element. A processor is programmed to select the gain level. The system has a light source, preferably a laser diode, and a laser diode circuit, which provides accurate setting by the processor of the laser optical power output. The laser diode is calibrated according to each selected gain level of the amplifier such that the system can scan within a desired range of distances from the system to a bar code. The system successively scans a bar code, with each scan being at a different amplification level. In the alternative, a signal size detector provides a signal representative of the size of the signal to the digitizer. Utilizing this detector, the system successively scans a bar code and switches the amplification level responsive to signal size.
摘要翻译：提供了一种用于条形码读取和扫描的系统，其具有用于在距离范围内准确读取条形码的自动增益控制。系统内的放大器提供多个可选择的放大增益电平，以增加由数字化元件接收的信号的大小。处理器被编程为选择增益电平。该系统具有光源，优选为激光二极管，以及激光二极管电路，其提供处理器对激光光功率输出的准确设置。激光二极管根据放大器的每个选择的增益电平进行校准，使得系统可以在从系统到条形码的期望的距离范围内进行扫描。系统连续地扫描条形码，每个扫描处于不同的放大级别。在替代方案中，信号大小检测器将表示信号大小的信号提供给数字转换器。利用该检测器，系统依次扫描条形码并响应信号大小切换放大电平。

10. 发明授权

US5598070A Optical scanner control systems and circuits 失效
标题翻译：光学扫描仪控制系统和电路
公开(公告)号：US5598070A
公开(公告)日：1997-01-28
申请号：US353411
申请日：1994-12-09
申请人： Edward P. Coleman
发明人： Edward P. Coleman
IPC分类号： G06K7/10 , H02K29/08 , H02K33/16
CPC分类号： G06K7/10851 , G06K2207/1016
摘要： A control system for a scanning motor that may operate at constant power, which has a control circuit including an H-Bridge connected across the drive coil of the motor. The control circuit operates under microprocessor control for digitally generating selected high current and a low current thresholds, which can be changed to enable the scanning motor to be operative over a large range (e.g. 3.3 v to 8 v) of supply voltage and to control the arc over which the motor oscillates and, therefore, the scan angle of an optical beam which scans a bar code. The control circuit turns the current to the drive coil on and off when the high and low thresholds are reached thereby varying the current which the motor draws which determines the scan angle and scan rate and average current draw, which may be maintained constant for constant power consumption.
摘要翻译：一种用于能够以恒定功率工作的扫描电动机的控制系统，其具有包括连接在电动机的驱动线圈上的H桥的控制电路。控制电路在微处理器控制下工作，用于数字产生所选择的高电流和低电流阈值，可以改变电流阈值，以使扫描电机能够在电源电压的较大范围（例如3.3 V至8 V）下工作，并控制电动机摆动的电弧，因此扫描条形码的光束的扫描角度。当达到高和低阈值时，控制电路将电流切换到驱动线圈，从而改变电机拉动的电流，这决定扫描角度和扫描速率以及平均电流消耗，这可以保持恒定的功率恒定消费。

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