DECODERING OF DESIGNATED BARCODE IN FIELD OF VISION OF BARCODE READER

专利摘要:
Embodiments of the present invention generally relate to the field of barcode reader, and more specifically to barcode readers designed for an environment of densely packed barcodes. In one embodiment, the present invention is a barcode reader that includes an imaging assembly operable to record image frames; a directional light assembly operable to emit a directional light; and a control module adapted to: decode a barcode in a decoding frame image included by the image forming assembly; when decoding the barcode in the decoding frame image, have a frame list selection made; and reporting the barcode to an external host module at at least some overlap between a location of the barcode in the decoding frame image and the location of the at least one portion of the directional light pattern in the frame image list box.
公开号:BE1026258A9
申请号:E20195256
申请日:2019-04-17
公开日:2020-01-07
发明作者:Chunhua Chen；Harry E Kuchenbrod；Carl D Wittenberg；Chinh Tan；Daniel F Brown
申请人:Zebra Tech Corp；
IPC主号:

专利说明:

Decoding the designated barcode in the field of view of the barcode reader
Background
Barcode readers are commonplace nowadays, and are used in a variety of environments to read barcodes that are often attached to various articles. In some cases, such as bar code lists, bar codes are provided in a tightly packed composition where a multiple number of bar codes are separated from each other by a few inches. This can be problematic for many barcode readers since their field of view (FOV) can be wide enough to include multiple barcodes when the barcode reader is kept at a suitable distance from the barcode list. In some cases, readers may report a decoded barcode which, although it is decodable, is positioned at an extreme edge of the FOV. In other cases, the reader can simply give a decoding error and / or not give a successful decoding at all. As such, there is a need for devices, systems, and methods that are aimed at decoding a desired barcode in a work environment where barcodes are packed close together.
Resume
Accordingly, at least some embodiments of the present invention are directed to decoding a desired barcode in a work environment where barcodes are packed close together.
According to an aspect of the invention, a method is provided for performing a barcode reading operation by a barcode reader having a control module, an image-forming assembly operable to receive image frames, and a directing
BE2019 / 5256 light assembly operable to emit a directional light with a directional light pattern, the method comprising: recording, via the image-forming assembly, a decoding frame image; decoding, via the control module, a barcode in the decoding frame image; incorporating, via the image-forming assembly, a selection list-frame image when decoding the barcode into the decoding-frame image; detecting, in the picklist frame image, a portion of the picklist frame image that is illuminated by at least a portion of the directing light; and reporting, to a host module, the decoding of the barcode when the portion of the list frame frame at least partially overlaps with the barcode. Advantageously, the image-forming assembly may comprise a linear image-forming module.
Further, the operation of recording the decoding frame image may comprise operating the directional light assembly at a first intensity level, the operation operation of recording the selection frame frame image operating the directional light assembly on a second intensity level; and wherein the second intensity level is greater than the first intensity level.
Alternatively and / or additionally, the directional light assembly does not emit the directional light during at least a portion of the decoding frame image recording operation; and the directional light assembly emits the directional light during at least a portion of the operation of recording the picklist frame image.
According to another aspect of the invention, a barcode reader is provided comprising: a housing; an image-forming assembly positioned in the housing and operative to receive image frames; a directional light assembly positioned in the housing and operative to emit a directional light with a directional light pattern; and a control module positioned in the housing and communicatively coupled to the imaging assembly and the targeting
BE2019 / 5256 light assembly, wherein the control module is arranged to: decode a barcode into a decoding frame image recorded by the image forming assembly; upon decoding the barcode in the decoding frame image, causing the image-forming assembly to include a selection frame-frame image; determine a location, in the list box frame image, of at least a portion of the directional light pattern; and reporting the barcode to an external host module at least some overlap between a location of the barcode in the decoding frame image and the location of the at least one portion of the directional light pattern in the selection frame frame image. In one example, the image-forming assembly may comprise a linear image-forming module.
The control module may be arranged to operate the directional light assembly at a first intensity level during a recording of the decoding frame image, the control module may be arranged to operate the directional light assembly at a second intensity level during a recording of the decoding frame image. list box frame, and where the second intensity level is greater than the first intensity level.
Alternatively and / or additionally, the control module may be arranged to cause the directional light assembly not to emit the directional light during at least a portion of a recording of the decoding frame image, and wherein the control module may further be arranged to control the directional light assembly to emit the directional light during at least a portion of a recording of the selection frame frame image.
According to yet another aspect of the invention, an imaging basic module is provided for use in a barcode reader, comprising: an imaging assembly that is operational to receive image frames; a directional light assembly that is positioned with respect to the imaging assembly and is operational to emit a directional light with a directional light pattern; and a
BE2019 / 5256 control module that is communicatively coupled to the image-forming assembly and the directional light assembly, the control module being arranged to: decode a barcode into a decoding-frame image recorded by the image-forming assembly; upon decoding the barcode in the decoding frame image, causing the image forming assembly to include a list frame frame image; determine a location, in the list box frame image, of at least a portion of the directional light pattern; and reporting the barcode to an external host module at least some overlap between a location of the barcode in the decoding frame image and the location of the at least one portion of the directional light pattern in the selection frame frame image.
These and other features, aspects and advantages of the present description will be better understood with reference to the following drawing, description, and claims that follow.
Brief description of the different views of the drawing
The accompanying figures, wherein like reference numerals refer to identical or functionally similar elements in the individual views, together with the figure description below, are incorporated into and form part of the description and serve to further illustrate and illustrate embodiments of concepts comprising the claimed invention. explain various principles and advantages of these embodiments. This shows
FIG. 1 is a front and rear perspective view of a barcode reader in accordance with an embodiment of the present invention;
FIG. 2 is a schematic block diagram of some of the components of the barcode reader of FIG. 1;
BE2019 / 5256
FIG. 3 a barcode reader used in an environment in accordance with an embodiment of the present invention, and
FIG. 4 is a flow chart representative of a method used to read bar codes in accordance with an embodiment of the present invention.
Elements in the figures are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve the understanding of embodiments of the present invention.
The device and method components are represented, where appropriate, by conventional symbols in the figures, showing only those specific details that are relevant to the understanding of the embodiments of the present invention so as not to obscure the description with details provided on be easy to understand themselves.
Detailed description
With reference to FIG. 1, becomes an example barcode reader
100 shown with a housing 102 with a cavity for accommodating internal components, a trigger 104 and a window 106. The barcode reader 100 can be used in a hands-free mode as a stationary workstation when placed on the counter in a supporting bracket ( not shown). The barcode reader 100 can also be used in a holding mode when it is picked up from the counter (or other surface) and held in an operator's hand. In the hands-free mode, products can be moved to the window 106, swept, or displayed there. In the hold mode, the barcode reader 100 can be aimed at a barcode on a product and the trigger 104 can be pressed manually to image the
BE2019 / 5256 barcode to be initiated. In some implementations, the supporting bracket may be omitted and the housing 102 may also have other retaining or non-retaining shapes.
FIG. 2 shows a schematic block diagram of a portion of a barcode reader 100 in accordance with some embodiments. It is to be understood that FIG. 2 is not drawn to scale. The barcode reader 100 in FIG. 2 includes the following components: (1) a first optical assembly 110 comprising a first imaging sensor 112 and a first imaging lens assembly 114; (2) a second optical assembly 116 that includes a second linear imaging sensor 118 and a second imaging lens assembly 120; (3) an illumination source 122; (4) a printed circuit board (PCB) 124 that supports the first and second linear imaging sensors 112, 118 and the lighting source 122; (5) a control module 126 which is positioned on the PCB 124 and communicatively coupled to the first and second linear imaging sensors 112, 118 and the lighting source 124; (6) a memory 128 connected to the control module 126; (7) an illumination lens assembly 130 positioned in front of the illumination source 122; and (8) a directional light assembly 123 with a directional light source 125 and a directional lens assembly 127. When referring to portions of the barcode reader, certain components may be grouped and referred to as an "imaging basic module". In some cases, the basic imaging module may comprise imaging components such as the imaging sensor (s). In other cases, the basic imaging module may comprise additional elements such as, for example, a directional light assembly and / or the lighting assembly.
The first and second imaging modules 112, 118 can be CCD or CMOS imaging sensors and can be linear or two-dimensional sensors. Linear image sensors generally include multiple photosensitive pixel elements aligned with one
BE2019 / 5256 one-dimensional grid. Two-dimensional sensors generally include mutually orthogonal rows and columns of photosensitive pixel elements arranged to form a substantially flat surface. The first and second imaging modules 112, 118 are operative to detect light received by the first and second imaging lens assemblies 114, 120, respectively, along an optical path or axis 132, 134, respectively, through the window 106. Generally, each pair of imaging module and imaging lens assembly designed to act together to receive light scattered, reflected, or transmitted from a barcode as pixel data over a respective field of view (FOV). However, each lens / imaging module pair (also called an optical assembly) is arranged with different parameters.
In the embodiment described here, the first optical assembly 110 is designed to read barcodes over a relatively close working distance that extends between NWD1 and NWD2. In some embodiments, NDW1 is approximately 0 inches from the window 106 and NWD2 is approximately 28 to 32 inches from the window 106. Additionally, the optical assembly 110 receives light from a relatively wider FOV 136. On the other hand, the second optical assembly 116 is designed to read barcodes over a relatively long working distance that extends between FWD1 and FWD2. In some embodiments, FWD1 is approximately 24 inches from the window 106 and FWD2 is approximately 600 to 800 inches from the window 106. Additionally, the optical assembly 116 receives light from a relatively narrower FOV 138.
In some cases of use, barcode operators can direct the barcode reader so that multiple barcodes are within the FOV of the reader. Additionally, in some environments, a multiple number of barcodes may be positioned close to a space, causing the operator to inadvertently position the FOV of the reader on a barcode that
BE2019 / 5256 is not intended to be read. Thus, in order to enable the acquisition and / or selection of the correct bar code, the aforementioned components can be arranged as further described below.
With reference to FIG. 3, an example is shown of a barcode reader 100 pointing to a work surface 300 such that its FOV 302 has overlap with a plurality of barcodes 304, 306. In such a scenario, the barcode reader 100 may be arranged by its control module, to report only the decoding of one of the barcodes that falls within certain criteria. FIG. 4 shows a flowchart representative of a method 400 used to decode and report one of the barcodes. The method starts with recording a decoding frame in step 402 and feeding that frame to a decoding module (which may be considered part of the entire control module) at step 404. A decoding frame can be considered as an image frame with the directing light source being plotted or dimmed, and wherein the imaging module parameters (e.g., gain, exposure time, etc.) and the illumination assembly parameters (e.g., duration of exposure pulse, exposure intensity, etc.) are set in a manner conducive to recording a focused and / or contrasted (that is, not over-saturated or under-saturated) image of the environment. Preferably, the parameters are set so that if the image comprises a barcode, that barcode would be decodable by a control module using conventional decoding techniques. If the decoding frame does not have decodable bar codes, the process returns to step 402 to continue recording decoding frames. On the other hand, if the control module is capable of decoding a barcode in the decoding frame, the method proceeds to step 406 where the reader records a selection list frame. A list frame frame can be considered as an image frame with the directional light source on or off
BE2019 / 5256 is set higher (relative to the dimmed levels at which the directing light source is operated during the recording of a decoding frame), and the imaging module parameters (e.g., gain, exposure time, etc.) and the lighting assembly parameters (e.g., duration of lighting pulse , intensity of illumination pulse, etc.) are adjusted in a manner that is conducive to recording a focused and / or contrasted (i.e. not over-saturated or under-saturated) image of the environment. In a preferred embodiment, for recording the list box frame, the imaging module parameters and the lighting assembly parameters are set to the same settings as they were set to during the recording of the last decoding frame comprising the decodable barcode.
A directional light assembly generally serves the purpose of providing a directional light pattern designed to give the operator a visual indication of the center of the FOV, central area of the FOV, or other reference point that the operator can assist in orienting the reader. Therefore, it is usually provided by means of a perceptible (e.g., clear) visual indicator (e.g., a dot directed at the estimated center of the FOV) that is typically clear enough for the operator to see in normal use. An example of a directional sign is shown in FIG. 3 as a round dot 308 that overlaps with the barcode 304. In some embodiments, this light pattern can be obtained through a laser light source and suitable optics that direct the beam really in the desired direction. In some embodiments, the laser light source can be replaced with a light emitting diode (LED). Since the directional light pattern is usually intended to be visible to the operator, it is typically brighter than the environment on which it is projected. Therefore, during the recording of the list box frame when the directing light source is turned on or turned on, the resulting frame includes a portion of an image that
BE2019 / 5256 represents directional light pattern (also called a directional sign) and is clearly brighter (for example, over-saturated, above a predetermined brightness-intensity threshold, etc.) with respect to the other parts of the image. Although in most cases the presence of the directional sign will be easily perceptible through image analysis, that may not be the case under certain lighting conditions. Thus, at step 408, the method attempts to detect the presence of the directional sign along with its position in the image. If the target character cannot be detected, the method may return to step 402 to restart the reading process. Otherwise, the method may proceed to step 410 where the control module compares the location of the barcode previously decoded from the decoding frame with the location of the target mark as obtained from the list box. In this case, references to the feature locations can be understood as their location in the image itself. This can be evaluated at, for example, a pixel level, an image section level (e.g., a quadrant), or any other suitable approach where the relative position of the barcode in the recorded decoding frame image is compared with the relative position of the target mark in the frame frame selection list. If it is determined that there is no overlap or insufficient degree of overlap between the position of the decoded barcode and the target character, the control module can return to step 402 to restart the reading process. Otherwise, if it is determined that there is a minimum amount of overlap between the position of the decoded barcode and the target character, the control module reports at step 412 a successful decoding of an external host module, such as, for example, a point of sale (POS) system, a computer, etc.
In some embodiments, if the process returns to step 402 in determining that there is no or insufficient degree of overlap between the position of the decoded barcode and the target character, the process may be arranged to skip steps 406 and 408, and immediately by
BE2019 / 5256 go to step 410 on successful decoding of a barcode in a decoding frame. This may be the case because a frame selection list has already been included and the position of the target mark has already been determined. Thus, there may be no need to re-record another picklist frame and to again detect the presence and position of the target mark.
It is clear that in some cases more than one barcode will be within the FOV of the reader when the decoding frame is included, as may be the case in FIG. 3 where bar codes 304, 306 are positioned in the FOV 302. In this case, the control module may be arranged to (i) select one of the bar codes for the comparison step 410, or (ii) compare the locations of both bar codes with the location of the target mark.
In some embodiments, the minimum amount of overlap can be determined by the number of pixels that are determined to overlap between the barcode and the target sign. If that number of pixels exceeds a predetermined threshold, it can be said that there is an overlap between the barcode and the target mark. In some embodiments, the number of pixels may depend on some underlying factors, such as, for example, the number of pixels occupied by the target mark and / or the number of pixels occupied by the decoded barcode. The minimum overlap threshold can for example be set at 20% of the total number of pixels occupied by the target mark. In that case, if it is determined that the target character occupies 200 pixels in the list box, for the existence of an overlap between the decoded barcode and the target character, at least 40 of the 200 pixels of the target character must overlap with the barcode. It is to be understood that although the barcode appears in one image and the directional sign appears in the other image, an overlap between those elements can be seen as, for example, an overlap when the images are superimposed. Another way to consider an overlap is by
BE2019 / 5256 using the x: y locations of pixels occupied by the respective elements. In other words, if the barcode in the decoding frame image appears above pixel 1340: 1 and the directional mark in the frame list box appears above pixel 1340: 1, then it can be said that the barcode and the directional mark overlap since they are positioned on the same pixel in their respective images.
It is noted that while the above examples have been described with reference to a barcode reader 100 comprising multiple imaging sensors, and thus multiple imaging assemblies, concepts described herein apply equally to barcode readers having only one image sensor. Similarly, these concepts are also applicable to barcode readers with more than two image sensors. Finally, the methods described herein can be implemented in barcode readers via a setting that is manually enabled by the operator if the operator is aware that he or she will scan barcodes in an environment where a plurality of barcodes are densely populated. In some embodiments, this setting can be automatically activated upon the detection of multiple barcodes in the FOV.
Implementing the aforementioned configurations in a barcode reader can be particularly advantageous since it could allow someone to read barcodes more accurately in an environment where multiple barcodes are positioned close to each other. Additionally, since the reader can bypass reporting successful decoding to an external host module in the event that the barcode is outside the designated target mark, the operator can help inadvertently read barcodes that were closer to the reader's FOV limits . Additionally, these configurations can be particularly useful in implementations that use linear imaging modules
BE2019 / 5256 where accurate detection of a directional sign can be more challenging than in implementations that use 2D imaging modules.
Specific embodiments have been described in the foregoing description. It is noted, however, that various modifications and changes can be made without departing from the scope of the invention as set forth in the claims below. Accordingly, the description and figures are to be considered in an illustrative manner rather than in a limiting sense, and all such modifications are intended to be included within the scope of the present teachings. Additionally, the described embodiments / examples / implementations should not be interpreted as mutually exclusive, and should instead be understood as possible combinable if such combinations are possible in any way. In other words, any measure described in one of the above-described embodiments / example / implementations can be included in any other above-described embodiment / example / implementation. In addition, no steps of a method described herein will be assumed to have a specific sequence unless it is expressly stated that a different sequence is not possible or required by the remaining steps of the method. Some of the figures may also be drawn to scale or not.
The benefits, solutions to problems and any element that can lead to any benefit, or solution that takes place or becomes more pronounced, should not be interpreted as a critical, necessary, or essential measure or element of any of all claims. The invention is only defined by the appended claims including modifications made during the course of this application and all equivalents of those granted claims. For the purpose of clarity and a concise description,
BE2019 / 5256, measures are described herein as part of the same or separate embodiments. It is noted, however, that the scope of the invention may include embodiments that have combinations of all or some of the features described herein. It may be assumed that the embodiments shown comprise identical or equivalent components, except where they are described as otherwise.
In addition, in this document, relative terms such as first and second, top and bottom, and the like can only be used to distinguish one entity or action from another entity or action without necessarily needing one of these actual relationships or orders between such entities or actions. is or is being implied. The terms "includes", "comprising", "" has "," having "," contains "," containing "or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method , article, or device that includes a list of elements includes not only those elements, but may also include other elements that are not expressly stated or inherent in such a process, method, article, or device. An element preceded by "includes ... a", "has ... a", "contains ... a" does not exclude, without limitation, the existence of additional identical elements in the process, method, article , or the device comprising the element. The term "one" is defined as one or more, unless explicitly stated otherwise herein. The terms "substantially", "essential", "approximately", or any other version thereof, are defined as being close by, as understood by those skilled in the art, and in one non-limiting embodiment, the term is defined as being within 10%, in another embodiment as being within 5%, in another embodiment as being within 1% and in another embodiment as being within 0.5%. The term "linked" as used herein is defined as connected, although not
BE2019 / 5256 necessarily directly and not necessarily mechanically. A device or structure that is "configured" in a certain way is configured in at least that way, but can also be configured in ways that are not specified.
It is noted that some embodiments may include one or more generic or specialized processors (or "processing devices"), such as microprocessors, digital signal processors, customized processors, and field programmable gate arrays (FPGAs) and uniquely stored program instructions (including both software and hardware) which control the one or more processors, in combination with certain non-processor circuits, to implement some, most, or all functions of the method and / or device described herein. Alternatively, some or all of the functions could be implemented by a state machine that has no stored program instructions, or in one or more application-specific integrated circuits (ASICs), in which each function or some combinations of certain functions are implemented as custom logic (on made to measure). A combination of the two approaches could of course be used.
In addition, an embodiment may be implemented as a computer-readable storage medium having a computer-readable code stored thereon for programming a computer (e.g., including a processor) to perform a method as described and claimed herein. Examples of such computer-readable storage media include, but are not limited to, a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a ROM (read-only memory), a PROM (programmable read-only memory) ), an EPROM (erasable programmable read-only memory), an EEPROM (electrically erasable programmable read-only memory) and a flash memory. It is further noted that despite
BE2019 / 5256 potentially significant effort and many design choices that are motivated by, for example, available time, current technology, and economic considerations, when guided by the concepts and principles described herein will easily be able to generate such software instructions and programs and ICs with minimal experimentation.
The summary description is provided to enable the reader to quickly find out the nature of the technical description. It is submitted on the assumption that it will not be used to interpret the claims or to limit their scope. Additionally, in the foregoing detailed description, various measures may be grouped together in various embodiments for the purpose of streamlining the description. This manner of description should not be interpreted as reflecting an intention that the embodiments claimed require more measures than are explicitly enumerated in each claim. Instead, the subject matter of the invention, as the following claims express, lies in less than all of the features of a single described embodiment. So the following claims are incorporated in the detailed description, each claim per se standing as a separate claimed subject matter. The mere fact that certain measures are named in mutually different conclusions does not indicate that a combination of these measures cannot be used for an advantage. A large number of variants will be clear to the skilled person. All variants are considered to be included within the scope of the invention as defined in the following claims.

权利要求:
Claims (12)
[1]
A method for performing a barcode reading operation by a barcode reader having a control module, an image-forming assembly that is operational to record image frames, and a directional light assembly that is operational to emit a directional light with a directing light pattern, the method comprising:
recording, via the image forming assembly, a decoding frame image;
decoding, via the control module, a barcode in the decoding frame image;
recording, via the image forming assembly, a selection list frame image, upon decoding the barcode into the decoding frame image, detecting, in the selection list frame image, a portion of the selection list frame image that is exposed by at least a portion of the directing light; and reporting, to a host module, the decoding of the barcode when the portion of the list frame frame at least partially overlaps with the barcode.
[2]
The method of claim 1, wherein the imaging assembly comprises a linear imaging module.
[3]
The method of claim 1 or 2, wherein the operation of recording the decoding frame image comprises operating the directional light assembly at a first intensity level, the operation of recording the selection frame frame image operating the directional light assembly comprises a second intensity level; and wherein the second intensity level is greater than the first intensity level.
BE2019 / 5256
[4]
The method of any one of the preceding claims, wherein the directional light assembly does not emit the directional light during at least a portion of the processing of recording the decoding frame image; and wherein the directional light assembly emits the directional light during at least a portion of the operation of recording the selection frame frame image.
[5]
5. Barcode reader, comprising:
a housing;
an image-forming assembly positioned in the housing and operative to receive image frames;
a directional light assembly positioned in the housing and operative to emit a directional light with a directional light pattern; and a control module positioned in the housing and communicatively coupled to the imaging assembly and the directional light assembly, the control module being arranged to:
decoding a barcode into a decoding frame image recorded by the image-forming assembly;
upon decoding the barcode in the decoding frame image, causing the image forming assembly to include a list frame frame image;
determine a location, in the list box frame image, of at least a portion of the directional light pattern; and reporting the barcode to an external host module at least some overlap between a location of the barcode in the decoding frame image and the location of the at least one portion of the directional light pattern in the selection frame frame image.
[6]
The barcode reader of claim 5, wherein the image-forming assembly comprises a linear image-forming module.
[7]
7. Barcode reader according to claim 5 or 6,
BE2019 / 5256 wherein the control module is arranged to operate the directional light assembly at a first intensity level during a recording of the decoding frame image, the control module is arranged to operate the directional light assembly at a second intensity level during a recording of the list box frame image, and wherein the second intensity level is greater than the first intensity level.
[8]
The barcode reader of any one of claims 5-7, wherein the control module is arranged to cause the directional light assembly not to emit light during at least a portion of a recording of the decoding frame image, and wherein the control module further is arranged to cause the directing assembly to emit light during at least a portion of a recording of the selection frame frame image.
[9]
An imaging basic module for use in a barcode reader, comprising:
an image forming assembly that is operational to record image frames;
a directional light assembly that is positioned with respect to the imaging assembly and is operational to emit a directional light with a directional light pattern; and a control module that is communicatively coupled to the image-forming assembly and the directional light assembly, the control module being arranged to:
decoding a barcode into a decoding frame image recorded by the image-forming assembly;
upon decoding the barcode in the decoding frame image, causing the image forming assembly to include a list frame frame image;
BE2019 / 5256 determine a location, in the list frame frame, of at least a portion of the directional light pattern; and reporting the barcode to an external host module at least some overlap between a location of the barcode in the decoding frame image and the location of the at least one portion of the directing pattern in the list frame frame image.
[10]
The basic imaging module of claim 9, wherein the imaging assembly comprises a linear imaging module.
[11]
The basic imaging module according to claim 9 or 10, wherein the control module is arranged to operate the directional light assembly at a first intensity level during a recording of the decoding frame image, the control module is arranged to operate the directional light assembly on a operate a second intensity level during a recording of the selection list frame image, and wherein the second intensity level is greater than the first intensity level.
[12]
The basic imaging module according to any of claims 9-11, wherein the control module is adapted to cause the directional light assembly not to emit light during at least a portion of a recording of the decoding frame image, and wherein the control module further is arranged to cause the directing assembly to emit light during at least a portion of a recording of the selection frame frame image.

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WO2019221864A1|2019-11-21|

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BE1026258A1|2019-12-03|

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GB202016366D0|2020-12-02|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

JP3632578B2|2000-09-14|2005-03-23|株式会社デンソー|Optical information reader|

---

JP2002140662A|2000-11-06|2002-05-17|Matsushita Electric Ind Co Ltd|Optical information reader|

---

JP4058529B2|2003-09-08|2008-03-12|株式会社デンソーウェーブ|Optical information reader|

---

US7347371B2|2004-07-30|2008-03-25|Symbol Technologies, Inc.|Aiming pattern for imaging-based bar code readers|

---

US7478753B2|2004-08-31|2009-01-20|Symbol Technologies, Inc.|System and method for aiming an optical code scanning device|

---

US7721966B2|2004-10-18|2010-05-25|Datalogic Scanning, Inc.|System and method of optical reading employing virtual scan lines|

---

EP2422294B1|2009-04-20|2017-04-19|Metaform Ltd.|A multiple barcode detection system and method|

---

US8296754B2|2009-06-02|2012-10-23|Hand Held Products, Inc.|Indicia reader with programmable indicators of software upgrades|

---

US8245930B2|2009-11-20|2012-08-21|Symbol Technologies, Inc.|Method and apparatus for augmenting optical barcode scanner with RFIDreader|

---

US9111163B2|2013-07-31|2015-08-18|Symbol Technologies, Llc|Apparatus for and method of electro-optically reading a selected target by image capture from a picklist of targets|

---

US9507989B2|2014-04-23|2016-11-29|Symbol Technologies, Llc|Decoding barcode using smart linear picklist|

---

US10708397B2|2015-04-08|2020-07-07|Cognex Corporation|Optical accessory for attachment to mobile device|USD918210S1|2019-04-04|2021-05-04|Zebra Technologies Corporation|Data capture device|

---

US11003874B1|2019-11-12|2021-05-11|Zebra Technologies Corporation|Devices and methods for reading picklists|

法律状态:
2020-08-26| FG| Patent granted|Effective date: 20200710 |

优先权:

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申请号 | 申请日 | 专利标题

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US15/955,612|US10671824B2|2018-04-17|2018-04-17|Decoding designated barcode in field of view of barcode reader|

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