公开(公告)号：US20040004125A1

公开(公告)日：2004-01-08

申请号：US10324888

申请日：2002-12-20

申请人： Welch Allyn Data Collection, Inc.

发明人： William H. Havens ,  Charles M. Hammond

IPC分类号： G06K007/10 ,  G02B026/08

CPC分类号： G02B27/0075 ,  G06T5/003 ,  G06T2207/20192 ,  H04N1/4092

摘要： Briefly stated, the operating depth of field for a bar code scanner, preferably a laser scanner, is increased by placing a cubic phase mask (CPM) in the scanning beam. The masked beam is then scanned and reflected off a bar code and received by a photodetector. The received signal is then processed to recover the original unperturbed representation of the bar code pattern. The processed signal has an increased depth of field over an unmasked scanner signal.

摘要翻译： 简而言之，通过在扫描光束中放置立方相掩模（CPM）来增加条形码扫描器（优选为激光扫描器）的操作景深。 然后，屏蔽的光束被扫描并从条形码反射并被光电检测器接收。 然后处理接收的信号以恢复条形码图案的原始未受干扰的表示。 经处理的信号在未屏蔽的扫描仪信号上具有增加的景深。

公开(公告)号：US20030218069A1

公开(公告)日：2003-11-27

申请号：US10441473

申请日：2003-05-20

申请人： Welch Allyn Data Collection, Inc. ,  Welch Allyn Data Collection

发明人： Timothy P. Meier ,  Robert M. Hussey ,  Charles P. Barber

IPC分类号： G06K007/10 ,  G06K009/22 ,  G06K019/06 ,  G02B026/10

CPC分类号： G06K7/10881 ,  G06K7/109 ,  G06K2207/1018

摘要： In the present invention, the control unit of an optical reader analyzes image data being generated by the imaging element of the reader and changes the mode of operation of the reader if the image data indicates that machine readable indicia, such as a bar code symbol or a text character, is likely in the field of view of the reader. Normally, analysis of image data includes the step of detecting for edge transitions in the image information. If the control unit determines that the image data includes more than a predetermined number of edge transitions, then the control unit imparts appropriate control over various reader elements to change the mode of operation of the reader. Normally, the control unit changes the mode of operation of the reader from a first mode, wherein the reader does not operate to decode or recognize image data to a second mode, wherein the reader operates to decode and/or recognize image data.

公开(公告)号：US20030089775A1

公开(公告)日：2003-05-15

申请号：US09862024

申请日：2001-05-21

申请人： Welch Allyn Data Collection, Inc.

发明人： Daniel Yeakley ,  James T. Sauerwein JR. ,  Timothy P. Meier

IPC分类号： G06K007/10 ,  G06K007/14

CPC分类号： G06K7/10851 ,  G06K7/10881 ,  G06K9/228 ,  G06K2207/1011

摘要： The invention is an optical reader configured to operate in a decode fail image display feedback mode. When operating in a decode fail image display feedback mode, a reader according to the invention waits for a trigger to be actuated, and when a trigger is actuated captures a frame of image data and attempts to decode decodable indicia represented within the frame of image data. The reader displays an image corresponding to a recently captured frame of image data on the reader display to aid in the user in positioning the reader relative to a display, but only in the case that decoding is unsuccessful. If decoding succeeds no image is displayed on the reader display. By withholding display of an image corresponding to a captured frame unless and until there is an unsuccessful decoding attempt, a reader according to the invention provides a user with an image display feedback which aids positioning of a reader relative to a decodable indicia without deleteriously affecting initial positioning of the reader, which positioning is normally substantially accurate in the absence of display feedback.

摘要翻译： 本发明是被配置为在解码失败图像显示反馈模式中操作的光学读取器。 当在解码失败图像显示反馈模式下操作时，根据本发明的读取器等待触发被激活，并且当激活触发时捕获图像数据的帧并尝试对图像数据的帧内的可解码标记进行解码 。 读取器在读取器显示器上显示对应于最近拍摄的图像数据帧的图像，以帮助用户相对于显示器定位读取器，但仅在解码不成功的情况下。 如果解码成功，则读卡器显示屏上不显示图像。 通过扣留对与​​捕获的帧相对应的图像的显示，除非并且直到存在不成功的解码尝试，根据本发明的读取器向用户提供图像显示反馈，其帮助读取器相对于可解码标记的定位，而不会有害地影响初始 读取器的定位，在没有显示反馈的情况下，该定位通常基本上是准确的。

公开(公告)号：US20030062418A1

公开(公告)日：2003-04-03

申请号：US09766806

申请日：2001-01-22

申请人： Welch Allyn Data Collection, Inc.

发明人： Charles P. Barber ,  Carl W. Gerst III ,  George S. Smith II ,  Robert M. Hussey ,  Robert Gardiner ,  Matthew Pankow

IPC分类号： G06K007/10 ,  G06K009/22

CPC分类号： G06K7/10722

摘要： The invention is an optical reader having a 2D image sensor that is configured to operate in a partial frame capture mode. In a partial frame operating mode, the reader clocks out and captures at least one partial frame of image data having image data corresponding to less than all of the pixels of an image sensor pixel array. In one embodiment, the reader operating in a partial frame operating mode captures image data corresponding to a linear pattern of pixels of the image sensor, reads the image data, attempts to decode for a decodable 1D symbol which may be represented in the image data, and captures a full frame of image data if the image data reading reveals a 2D symbol is likely to be present in a full field of view of the 2D image sensor.

公开(公告)号：US20020179713A1

公开(公告)日：2002-12-05

申请号：US10201224

申请日：2002-07-22

申请人： Welch Allyn Data Collection, Inc.

发明人： John A. Pettinelli ,  Dennis W. McEnery ,  Robert C. Gardiner ,  Thomas W. Karpen

IPC分类号： G06K007/10 ,  G06K007/14

CPC分类号： G06K7/10584 ,  G06K7/10752 ,  G06K7/10851

摘要： An exposure control apparatus for use with optical readers, such as bar code readers, which utilize photosensitive image sensors. An illumination signal generating circuit generates an illumination signal having a magnitude that varies in accordance with the illumination level at the image sensor. A window detecting circuit samples the illumination signal during a predetermined part of each scan to determine whether the illumination signal is within the window, has exited the widow, or has re-entered the window. Exposure control circuitry uses the output of the window detecting circuit to control which of a plurality of the subdivisions of the exposure control range of the image sensor will be used. Changes in exposure time are made only between adjacent subdivisions of the exposure control range. Together with a predetermined hysteresis between the exit and re-entry thresholds of the window, the latter changes stabilize the operation of the reader by reducing exposure control nullhuntingnull.

摘要翻译： 一种用于光学读取器的曝光控制装置，例如利用光敏图像传感器的条形码阅读器。 照明信号发生电路产生具有根据图像传感器的照度的变化的幅度的照明信号。 窗口检测电路在每次扫描的预定部分期间对照明信号进行采样，以确定照明信号是否在窗口内，已经退出遗ow，或者已经重新进入窗口。 曝光控制电路使用窗口检测电路的输出来控制将使用图像传感器的曝光控制范围的多个细分中的哪一个。 曝光时间的变化仅在曝光控制范围的相邻细分之间进行。 与窗口的出口和重入阈值之间的预定滞后一起，后者通过减少曝光控制“搜索”来改变读者的操作。

公开(公告)号：US20020125317A1

公开(公告)日：2002-09-12

申请号：US09766922

申请日：2001-03-12

申请人： Welch Allyn Data Collection, Inc.

发明人： Robert M. Hussey ,  Robert Gardiner ,  Matthew Pankow

IPC分类号： G06K007/10 ,  G06K007/14

CPC分类号： G06K7/10732 ,  G06K7/10722 ,  G06K7/10821 ,  G06K7/1413 ,  G06K7/1417 ,  H04N5/343 ,  H04N5/374

摘要： In the present invention, an optical reader image sensor is adapted to clock out image data from an image sensor according to nulllow resolutionnull mode of operation in order to reduce a parameter determination delay of the reader. In a low resolution mode, some pixels of the readers image sensor array are clock out at normal clock out speed sufficient to develop electrical signals accurately reflecting the intensity of light at the respective pixel positions, while other pixels of the array are either not clocked out or are clocked out at a higher clock out rate which may be insufficient to allow development of electrical signals that accurately represent light incident on the image sensor's sensor array but which nevertheless, results in a reduction of the overall frame clock out rate of the frame of image data. An optical reader according to the invention operates in a low resolution frame clock out mode to capture a low resolution parameter determining frame of image data at high speed, reads pixel data from the parameter determination frame to determine an operation parameter based on actual illumination conditions, then utilizes the operation parameter in operating an optical reader.

摘要翻译： 在本发明中，光读取器图像传感器适于根据“低分辨率”操作模式从图像传感器中输出图像数据，以减少读取器的参数确定延迟。 在低分辨率模式中，读取器图像传感器阵列的一些像素以正常的时钟输出速度超时，足以产生准确地反映各个像素位置处的光强度的电信号，而阵列的其他像素不被计时 或者以更高的时钟输出速率输出，这可能不足以允许开发准确地表示入射在图像传感器的传感器阵列上的光的电信号，但是这导致帧的总体帧时钟输出速率的降低 图像数据。 根据本发明的光学读取器以低分辨率帧时钟输出模式操作以高速捕获图像数据的低分辨率参数确定帧，从参数确定帧读取像素数据，以基于实际照明条件确定操作参数， 然后在操作光学阅读器时利用操作参数。

公开(公告)号：US20030197063A1

公开(公告)日：2003-10-23

申请号：US10436182

申请日：2003-05-12

申请人： Welch Allyn Data Collection, Inc.

发明人： Andrew Longacre JR.

IPC分类号： G06K005/04 ,  G06K007/10 ,  G06K009/32

CPC分类号： G06K9/6255 ,  G06K7/14 ,  G06K7/1417 ,  G06K7/1469 ,  G06K9/3233

摘要： In the present invention, a bar code reader captures an initial image map corresponding to a scene, then subjects the initial image map to an interpolation step wherein values for constructed pixels positionally intermediate pixel values of the initial image map are interpolated as a function of the initial image map pixel values bordering the constructed pixels. After an interpolated image map is constructed, the interpolated image map is subjected to a binarization step wherein grey scale pixel values of the interpolated image map are converted into binary (1 or 0) pixel values by way of a thresholding process. In the thresholding process, grey scale pixel values are compared to a threshold in the grey scale range, then set to 1 if they are above the threshold and set to 0 if below the threshold. The pixel values of the resulting binarized interpolated image map are then analyzed to determine the identity of a message which may be encoded in any symbol which may be represented in the binarized interpolated image map.

摘要翻译： 在本发明中，条形码读取器捕获对应于场景的初始图像映射，然后对初始图像映射进行内插步骤，其中位于初始图像映射的像素值之间的位置上的构造像素的值被内插作为 与构造的像素接近的初始图像映射像素值。 在构建内插图像映射之后，对内插图像映射进行二值化步骤，其中内插图像映射的灰度像素值通过阈值处理被转换为二进制（1或0）像素值。 在阈值处理中，灰度像素值与灰度范围中的阈值进行比较，如果高于阈值，则将其设置为1，如果低于阈值，则设置为0。 然后分析所得到的二进制内插图像映射的像素值，以确定可以在二值化内插图像映射中表示的任何符号中编码的消息的身份。

公开(公告)号：US20030062419A1

公开(公告)日：2003-04-03

申请号：US09904697

申请日：2001-07-13

申请人： Welch Allyn Data Collection, Inc.

发明人： Michael Ehrhart ,  Andrew Longacre JR.

IPC分类号： G06K007/10 ,  G02B026/00 ,  G06K007/12

CPC分类号： H04N1/0035 ,  G06K9/00442 ,  G06K9/228 ,  H04N1/107 ,  H04N1/40062

摘要： The present invention relates to an optical reader that includes a color imaging assembly that generates color imaging data. An image analysis circuit determines if the acquired image should be characterized as a color photograph or as including a graphical symbol. A processing circuit processes the imaging data based on the image analysis circuit's determination of whether the image is a graphical symbol or a color photograph. The present invention allows a user to acquire and process both color images and graphical symbols, such as bar codes, text, OCR symbols or signatures. The optical reader of the present invention is also configured to associate an acquired image with at least one other acquired image.

摘要翻译： 本发明涉及一种包括产生彩色成像数据的彩色成像组件的光学读取器。 图像分析电路确定所获取的图像是否应该被表征为彩色照片或者包括图形符号。 处理电路基于图像分析电路确定图像是图形符号还是彩色照片来处理成像数据。 本发明允许用户获取和处理诸如条形码，文本，OCR符号或签名之类的彩色图像和图形符号。 本发明的光学读取器还被配置为将所获取的图像与至少一个其他获取的图像相关联。

公开(公告)号：US6164544A

公开(公告)日：2000-12-26

申请号：US111583

申请日：1998-07-08

申请人： Eric D. Schwartz ,  Edward B. Hubben ,  Brian L. Jovanovski ,  Vivian L. Hunter ,  Melvin D. McCall ,  Gerard F. Beckhusen

发明人： Eric D. Schwartz ,  Edward B. Hubben ,  Brian L. Jovanovski ,  Vivian L. Hunter ,  Melvin D. McCall ,  Gerard F. Beckhusen

IPC分类号： G06K7/10 ,  B06K7/10

CPC分类号： G06K7/10742 ,  G06K7/10732

摘要： These and other objects of the present invention are attained by apparatus for adjusting the position of a line of light in barcode space that includes a support frame having a rear housing containing a solid state imager and a pair of support arms extending forwardly from the front of the housing. An imaging lens is mounted between the arms for focusing an image of a target in barcode space upon the solid state imager along the optical axis of the imaging lens. Illuminating LEDs are mounted on either side of the imaging lens for illuminating the target. The illumination is passed through a pair of cylindrical lenses that are adjustably mounted upon the distal ends of the arm so that the light can be selectively positioned in barcode space.

公开(公告)号：US6161760A

公开(公告)日：2000-12-19

申请号：US152583

申请日：1998-09-14

申请人： David Marrs ,  Louis Bruno ,  Joseph Guszcza ,  Timothy Meier ,  Matthew Pankow ,  James A. Parker ,  John Pettinelli ,  Bradley Randolph ,  Andrew Reynolds ,  Thomas Ruhlman

发明人： David Marrs ,  Louis Bruno ,  Joseph Guszcza ,  Timothy Meier ,  Matthew Pankow ,  James A. Parker ,  John Pettinelli ,  Bradley Randolph ,  Andrew Reynolds ,  Thomas Ruhlman

IPC分类号： G06K17/00 ,  G06F17/00 ,  G06F19/00 ,  G06K7/10

CPC分类号： G06K17/0022

摘要： The invention is a multiterminal data collection network including a plurality of terminals and a base station configured so that each data collection terminal can be programmed in accordance with one of a predetermined number of available application. When a data collection terminal such as a bar code reader is programmed to operate in accordance with a particular application, the reader operates according to a data collection protocol that is the same as the data collection protocol of each other reader in the network programmed to operate in accordance with that same application. In another aspect of the invention, a base station normally transmits messages received from different readers according to different transmission protocols if the readers are programmed to operate in accordance with different applications, and transmits messages received from different readers according to the same protocol if the readers are programmed in accordance with the same application. A reader of the network can be associated with a new application group by reading of a specially designed application selector symbol.

摘要翻译： 本发明是一种多终端数据采集网络，包括多个终端和基站，其被配置为使得每个数据采集终端可以根据预定数量的可用应用中的一个进行编程。 当诸如条形码读取器的数据采集终端被编程为根据特定应用进行操作时，读取器根据与被编程操作的网络中的每个其他读取器的数据收集协议相同的数据收集协议来操作 按照同样的申请。 在本发明的另一方面，如果读取器被编程为根据不同的应用进行操作，则基站通常根据不同的传输协议发送从不同的读取器接收的消息，并且如果读取器 根据相同的应用编程。 通过读取专门设计的应用程序选择器符号，可以将网络的读者与新的应用程序组相关联。