公开(公告)号：JP2010267293A

公开(公告)日：2010-11-25

申请号：JP2010159473

申请日：2010-07-14

Applicant: Microscan Systems Inc ,  マイクロスキャン・システムズ・インコーポレーテッド

Inventor： KOLSTAD JESSE J ,  DAVIS BRYAN L

IPC: G06K7/00 ,  G06K7/10

CPC classification number: G06K7/10851

Abstract: PROBLEM TO BE SOLVED: To provide a bar code scanner platform in which a gain of an analog signal which indicates a bar code is controlled by means of a control loop. SOLUTION: An MTF detector 310 generates: a value that indicates a low frequency portion (various wide elements, that is, various elements that have different optical focal points) of an analog signal; and a second value that indicates a high frequency portion (various narrow elements, that is, various elements that have the same optical focal points) of the analog signal. A processor 308 uses the first value, the second value and a reference amplitude to calculate a gain IE signal. The processor 308 supplies the gain signal to an AGC circuit 304, and the circuit uses matching JFET to supply a linear response to the gain signal. A noise filter 312 is validated or invalidated based on the first value, the second value and/or a bar code scanner platform reading rate. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种条形码扫描器平台，其中借助于控制回路来控制指示条形码的模拟信号的增益。 解决方案：MTF检测器310产生指示模拟信号的低频部分（各种宽元件，即具有不同光学焦点的各种元件）的值; 以及指示模拟信号的高频部分（各种窄元件，即具有相同光焦点的各种元件）的第二值。 处理器308使用第一值，第二值和参考幅度来计算增益IE信号。 处理器308将增益信号提供给AGC电路304，并且该电路使用匹配JFET来向增益信号提供线性响应。 噪声滤波器312基于第一值，第二值和/或条形码扫描器平台读取速率被验证或无效。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：DE60333602D1

公开(公告)日：2010-09-09

申请号：DE60333602

申请日：2003-09-02

Applicant: MICROSCAN SYSTEMS INC

Inventor： KOLSTAD JESSE J

IPC: G06K7/10

公开(公告)号：AT475943T

公开(公告)日：2010-08-15

申请号：AT06076121

申请日：2003-09-02

Applicant: MICROSCAN SYSTEMS INC

Inventor： KOLSTAD JESSE J

IPC: G06K7/10

Abstract: The disclosure describes an apparatus and method for automatic gain control during scanning. The apparatus comprises an optical detector (206) to receive an optical signal reflected from a symbol (214) positioned within a scan window (215) by an optical beam (212) scanned from a leading edge (218) of the scan window (215) to a trailing edge (220) of the scan window; and a processor coupled (208) to the optical detector to adjust the gain of the optical detector during the beam scan. The process comprises receiving an optical signal using an optical detector (206), wherein the optical signal comprises optical energy reflected from a symbol positioned in a scan window as an optical beam scans from a leading edge of the scan window to a trailing edge of the scan window, and adjusting the gain of the optical detector during receipt of the optical signal. A calibration process is disclosed comprising calibrating the optical detector to obtain a plurality of gain corrections, each gain correction corresponding to a different position between a leading edge and a trailing edge of a scan window, and storing the plurality of gain corrections.

公开(公告)号：AU2003265931A1

公开(公告)日：2004-04-08

申请号：AU2003265931

申请日：2003-09-02

Applicant: MICROSCAN SYSTEMS INC

Inventor： KOLSTAD JESSE J

IPC: G06K7/10

Abstract: The disclosure describes an apparatus and method for automatic gain control during scanning. The apparatus comprises an optical detector (206) to receive an optical signal reflected from a symbol (214) positioned within a scan window (215) by an optical beam (212) scanned from a leading edge (218) of the scan window (215) to a trailing edge (220) of the scan window; and a processor coupled (208) to the optical detector to adjust the gain of the optical detector during the beam scan. The process comprises receiving an optical signal using an optical detector (206), wherein the optical signal comprises optical energy reflected from a symbol positioned in a scan window as an optical beam scans from a leading edge of the scan window to a trailing edge of the scan window, and adjusting the gain of the optical detector during receipt of the optical signal. A calibration process is disclosed comprising calibrating the optical detector to obtain a plurality of gain corrections, each gain correction corresponding to a different position between a leading edge and a trailing edge of a scan window, and storing the plurality of gain corrections.

公开(公告)号：DE60333372D1

公开(公告)日：2010-08-26

申请号：DE60333372

申请日：2003-09-02

Applicant: MICROSCAN SYSTEMS INC

Inventor： KOLSTAD JESSE J

IPC: G06K7/10

公开(公告)号：WO2005106768A3

公开(公告)日：2007-04-19

申请号：PCT/US2005011226

申请日：2005-04-04

Applicant: MICROSCAN SYSTEMS INC ,  KOLSTAD JESSE J ,  DAVIS BRYAN L

Inventor： KOLSTAD JESSE J ,  DAVIS BRYAN L

IPC: G06K7/10

CPC classification number: G06K7/10851

Abstract: According to embodiments of the present invention, a barcode scanner platform is provided in which the gain of an analog signal representative of a barcode is controlled using a control loop. In embodiments, an MTF detector generates a value (e.g., DC) representative of a low frequency portion (wide or out of optical focus elements) of the analog signal and a second value (e.g., DC) representative of a high frequency portion (narrow elements or in optical focus elements) of the analog signal. The processor uses the first and the second values and a reference amplitude to determine a gain IE signal. The processor provides the gain signal to an AGC circuit that provides a linear response to the gain signal using matched JFETs. A noise filter can be enabled or disabled based on the first value, the second value, and/or the barcode scanner platform read rate.

Abstract translation: 根据本发明的实施例，提供了一种条形码扫描器平台，其中使用控制回路来控制代表条形码的模拟信号的增益。 在实施例中，MTF检测器生成表示模拟信号的低频部分（宽或者光学元件的宽度）的值（例如，DC）和表示高频部分（窄的部分）的第二值（例如，DC） 元件或光学聚焦元件）。 处理器使用第一和第二值以及参考幅度来确定增益IE信号。 处理器向AGC电路提供增益信号，该AGC电路使用匹配的JFET向增益信号提供线性响应。 可以基于第一值，第二值和/或条形码扫描器平台读取速率来启用或禁用噪声滤波器。

公开(公告)号：EP1741046A4

公开(公告)日：2009-05-27

申请号：EP05731262

申请日：2005-04-04

Applicant: MICROSCAN SYSTEMS INC

Inventor： KOLSTAD JESSE J ,  DAVIS BRYAN L

IPC: G06K7/10

CPC classification number: G06K7/10851

Abstract: According to embodiments of the present invention, a barcode scanner platform is provided in which the gain of an analog signal representative of a barcode is controlled using a control loop. In embodiments, an MTF detector generates a value (e.g., DC) representative of a low frequency portion (wide or out of optical focus elements) of the analog signal and a second value (e.g., DC) representative of a high frequency portion (narrow elements or in optical focus elements) of the analog signal. The processor uses the first and the second values and a reference amplitude to determine a gain IE signal. The processor provides the gain signal to an AGC circuit that provides a linear response to the gain signal using matched JFETs. A noise filter can be enabled or disabled based on the first value, the second value, and/or the barcode scanner platform read rate.