公开(公告)号：DE69941090D1

公开(公告)日：2009-08-20

申请号：DE69941090

申请日：1999-09-13

Applicant: DATALOGIC SCANNING INC

Inventor： COLEMAN EDWARD P ,  COLLEY JAMES E ,  O'DONNELL PATRICK M

IPC: G06K7/10 ,  G02B26/10 ,  G06K7/14 ,  G06K9/22 ,  G06K19/06 ,  G06T5/00

Abstract: A system and method for improving the accuracy of edge detection under high Inter-Symbol Interference, or ISI, conditions is disclosed. The amplified and filtered first derivative signal is offset by equal amounts in both directions to generate positive and negative offsets which serve as inputs to negative and positive peak detectors, respectively. The offset is determined by a fast adaptive peak detector provided by attenuating and AC-coupling the first derivative signal to the positive supply to drive a peak detector with a fairly short attack time, such that its output is nearly settled on the first peak of the first derivative signal, but having a decay time long enough to keep the threshold level approximately constant across the label. Peaks are qualified if the peak in question differs in amplitude from the previously qualified peak by the offset amount. Thus, peaks are qualified if their modulation depth exceeds a threshold, regardless of the absolute level of the peaks (such qualification strategy is referred to as modulation depth gating).

公开(公告)号：WO2010068697A3

公开(公告)日：2010-08-19

申请号：PCT/US2009067383

申请日：2009-12-09

Applicant: DATALOGIC SCANNING INC ,  ATWATER CHARLES FORRISTER ,  MCQUEEN ALEXANDER M ,  O'DONNELL PATRICK M

Inventor： ATWATER CHARLES FORRISTER ,  MCQUEEN ALEXANDER M ,  O'DONNELL PATRICK M

IPC: G01G9/00 ,  G01G11/18 ,  G06T1/00 ,  H04N1/04

CPC classification number: G01G19/4144 ,  G01G23/00 ,  G01G23/3735 ,  G06K9/3216

Abstract: Systems and methods are provided for reducing erroneous weighing of items (530, 830, 1230, 1710, 2400, 3011, 3211, 3264) by detecting items extending beyond a peripheral edge of a weigh platter (110, 3020, 3020a, 3120, 3240) associated with a data reader (180, 190). For example, in response to a weigh request a scale guard module (210) acquires data indicative of whether an item extends between the weigh platter and another surface (160), compares the acquired data to reference data, and based on the comparison, determines whether an item extends off the weigh platter and thus on to another surface. The scale guard module may utilize non-electromagnetic compression waves (520, 650), radio waves (820), a portion of a data reader's scan field to scan a set of patterns (1500, 1700, 1900, 2000) extending along at least one edge of the weigh platter, an imaging based scanner (2300) to capture an image of at least one edge (2330) of the weigh platter, a light beam extending along at least one edge of the weigh platter with or without a light guide (3030, 3130, 3190) disposed in the weigh platter, a plane of light (3263) extending along at least one edge of the weigh platter, or any combination thereof.

Abstract translation: 提供了系统和方法，用于通过检测物品延伸超过称重盘（110,3020,3020a，3120,3240）的周边边缘的物品来减少物品（530,830,1230,1710,2400,3011,3211,3264）的错误称重 ）与数据读取器（180,190）相关联。 例如，响应于称重请求，比例保护模块（210）获取指示物品是否在称重盘和另一表面（160）之间延伸的数据，将所获取的数据与参考数据进行比较，并且基于该比较，确定 物品是否从称重盘延伸出来，从而延伸到另一个表面上。 防垢模块可以利用非电磁压缩波（520,650），无线电波（820），数据读取器的扫描场的一部分来扫描沿着至少延伸的一组图案（1500,1700,1900,2000） 称重盘的一个边缘，用于捕获重物盘的至少一个边缘（2330）的图像的基于成像的扫描仪（2300），沿着称重盘的至少一个边缘延伸的光束，其具有或不具有光导 （3030,3130,3109），其设置在所述称重盘中，沿所述称重盘的至少一个边缘延伸的光平面（3263）或其任何组合。

公开(公告)号：DE19882768B3

公开(公告)日：2019-03-28

申请号：DE19882768

申请日：1998-10-15

Applicant: DATALOGIC SCANNING INC N D GES D STAATES DELAWARE

Inventor： COLLEY JAMES E ,  O'DONNELL PATRICK M

IPC: G06K7/10 ,  G06K7/14

Abstract: Zweiter Ordnung differenzierender Signalprozessor für einen Strichkodescanner, wobei der zweiter Ordnung differenzierende Signalprozessor eingerichtet ist zum Erfassen von Strich- und Zwischenraum-Übergänge in einem Eingangssignal (220) darstellenden Rändern, wobei der zweiter Ordnung differenzierende Signalprozessor ein gesamtes Filterpolynom gerader Ordnung aufweist, das weiter aufweist:ein erstes Filter (104), welches das Eingangssignal (220) empfängt und ein gefiltertes Signal bereitstellt; einen ersten Ausgangskanal (126), der mit einem ersten Filter abschließt, welches ein komplexes Polpaar mit einer ersten Abschneidefrequenz und einem ersten Dämpfungsverhältnis aufweist, wobei der erste Ausgangskanal (126) das gefilterte Signal empfängt und die erste Ableitung (226) des Eingangssignals (220) erzeugt; undeinen zum ersten Ausgangskanal (126) parallelen zweiten Ausgangskanal (128), der mit einem zweiten Filter abschließt, welches ein komplexes Polpaar mit der ersten Abschneidefrequenz und dem ersten Dämpfungsverhältnis aufweist, wobei der zweite Ausgangskanal (128) das gefilterte Signal empfängt und die zweite Ableitung (228) des Eingangssignals (220) erzeugt;wobei das erste Filter (104) ein Tiefpaßfilter zweiter Ordnung ist und das zweite Filter ein Hochpaßfilter zweiter Ordnung ist; undwobei die Abschneidefrequenz und das Dämpfungsverhältnis des Tiefpaßfilters und des Hochpaßfilters im wesentlichen gleich sind.

公开(公告)号：WO2011071731A3

公开(公告)日：2011-09-22

申请号：PCT/US2010058604

申请日：2010-12-01

Applicant: DATALOGIC SCANNING INC ,  MCQUEEN ALEXANDER M ,  O'DONNELL PATRICK M

Inventor： MCQUEEN ALEXANDER M ,  O'DONNELL PATRICK M

IPC: G06K7/10

CPC classification number: G01G19/4144 ,  G01J1/18 ,  G01J1/44

Abstract: Systems and methods for reducing erroneous weighing of items such as by detecting items (11) extending beyond a periphery of a weigh platter (20, 120, 170, 240) whereby in one configuration, the system employs a light guide (30, 320) for routing a light beam to a detector (40,140) operative to detect interruption of the beam due to an item encroaching upon or overhanging an edge of the platter. In another configuration, the scale includes a perimeter gap (252, 257) between the platter outer edge and scanner housing frame or checkout counter, a light beam directed angularly upward through the gap is partially obstructed by the frame and platter whereby light exits the gap forming a light plane, wherein an object placed on the platter extending across the gap intersects the light plane thus scattering light rays, some of which are sensed by a detector (280). Various indicators (295, 297) for alerting the operator of off-scale detection are also described.

Abstract translation: 用于减少物品的错误称重的系统和方法，例如通过检测延伸超过称重盘（20,120,170,240）的周边的物品（11），由此在一个配置中，系统采用光导（30,320） 用于将光束路由到检测器（40,140），该检测器可操作以检测由于物品侵入或悬垂在所述拼盘的边缘处的物体的中断。 在另一种配置中，刻度包括在盘片外边缘和扫描器外壳框架或结算台之间的周边间隙（252,257），通过该间隙成角度地向上定向的光束被框架和盘片部分地遮挡，由此光离开间隙 形成光平面，其中放置在跨越间隙延伸的盘片上的物体与光平面相交，从而散射光线，其中一些被检测器（280）感测。 还描述了用于警告操作者离线检测的各种指示器（295,297）。

公开(公告)号：EP2373960A4

公开(公告)日：2013-05-22

申请号：EP09832495

申请日：2009-12-09

Applicant: DATALOGIC SCANNING INC

Inventor： ATWATER CHARLES FORRISTER ,  MCQUEEN ALEXANDER M ,  O'DONNELL PATRICK M

IPC: G01G19/414 ,  G01G23/00 ,  G01G23/37 ,  G06K9/32 ,  G06T1/00 ,  H04N1/04

CPC classification number: G01G19/4144 ,  G01G23/00 ,  G01G23/3735 ,  G06K9/3216

Abstract: Systems and methods are provided for reducing erroneous weighing of items by detecting items extending beyond a peripheral edge of a weigh platter associated with a data reader. For example, in response to a weigh request a scale guard module acquires data indicative of whether an item extends between the weigh platter and another surface, compares the acquired data to reference data, and based on the comparison, determines whether an item extends off the weigh platter and thus on to another surface. The scale guard module may utilize non-electromagnetic compression waves, radio waves, a portion of a data reader's scan field to scan a set of patterns extending along at least one edge of the weigh platter, an imaging based scanner to capture an image of at least one edge of the weigh platter, light beams extending along at least one edge of the weigh platter, or any combination thereof.

公开(公告)号：EP1771810A4

公开(公告)日：2010-12-01

申请号：EP05765457

申请日：2005-06-08

Applicant: DATALOGIC SCANNING INC

Inventor： OLMSTEAD BRYAN L ,  COLLEY JAMES E ,  O'DONNELL PATRICK M

IPC: G06K9/18 ,  G02B26/10 ,  G06K7/10 ,  G06K7/14 ,  G06K9/22 ,  G06K9/38 ,  G06K19/06 ,  G06T5/00

CPC classification number: G06K7/10851 ,  G06K7/14 ,  G06K7/1452 ,  G06K9/38