Patent Publication Number: US-10311270-B2

Title: Filtering inventory objects using images in an RFID system

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 15/632,960 filed Jun. 26, 2017, which is a continuation of U.S. patent application Ser. No. 15/275,524 filed Sep. 26, 2016, which is a continuation of U.S. patent application Ser. No. 14/965,038 filed Dec. 10, 2015, which is a continuation of U.S. patent application Ser. No. 14/276,556, filed May 13, 2014, which claims benefit of U.S. Provisional Patent Application No. 61/840,209, filed Jun. 27, 2013, which are incorporated herein by reference in their entireties. 
    
    
     BACKGROUND 
     Radio-frequency identifier (RFID) methods are widely used for a number of tasks, including smart cards, supporting maintenance tasks, identification badges, tracking objects in manufacturing, retail inventory management, etc. An RFID tag can be attached, e.g., to an inventory object. An encoded information reading (EIR) terminal can be configured to read the memory of an RFID tag attached to an inventory object. 
     Current RFID operations do not have a way to take reliable inventory counts. Current RFID methods for inventory counting require pre-determined lists of expected inventory to check against. This is necessary because of the nature of RFID, and more specifically, radio waves. When an RF device is being used to scan items, interrogation signals are emitted out from the reader and spread ambiguously throughout the workspace. There is no way to be positive where the interrogation signals are going, or know (with an adequate level of precision) the depth of a particular scan. There are many environmental factors that contribute to this. One common obstacle to reliable and consistent RF scanning is metal. Metal fixtures and building material cause interference and can severely change the nature of a scan—making it impossible to know for certain what the coverage area is. Due to this, it is common to reconcile (positively register a scan of an item) unwanted items. For example, if one is attempting to scan a shelf in order to obtain a count of jeans that sit on the shelf they may also accidentally scan nearby shirts, socks or other items (located on adjacent shelves). This limitation has reduced effectiveness and a lowered user experience. 
     SUMMARY 
     To address the above issues, methods and systems are provided. In one aspect, a method includes a reader scanning one or more transponders, and obtaining, from a database, an image for each transponder. Each transponder may be associated with an object (e.g., an item of retail inventory). The obtained image for each object is presented on an interface, and a selection of an object category is received using the obtained images. A determination is made as to which objects are associated with the selected object category. A display screen displays data associated with only the objects associated with the selected object category. 
     In another aspect, a method of processing transponder signals received from transponders to identify the transponders is provided. A first signal including a first code and a first identifier may be received from a first transponder. The first identifier is written to the first transponder by an RFID writer when the first transponder is placed proximate to the RFID writer, and the first identifier is used to associate transponders with a first user. A second signal including a second code and the first identifier may be received from a second transponder. The first identifier is also written to the second transponder by the RFID writer when the second transponder is placed proximate to the RFID writer. The first and second transponders are associated with the first user based on receiving the first identifier from both the first and second transponders. 
     In another embodiment, a method includes presenting an image on an interface of a reader. The image may be associated with a category and an object. A selection of the category is received via the interface, and a reader scans a transponder in an area where the transponder is associated with the object. A category associated with the transponder is determined, and the transponder is displayed on a display screen of the reader only in response thereto. 
     In yet another embodiment, a system is provided that may include an interface, a scanner and a display. The scanner may be configured to scan one or more transponders, where the one or more transponders are associated with objects disposed on a fixture. The display may be configured to display the interface. An image for each object is obtained from a database, and the obtained image is presented for each object on the interface. A selection of an object category is received using the obtained images, and a determination is made as to which objects are associated with the selected object category. The display displays data associated with only the objects associated with the selected object category. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The objects and features of the invention can be better understood with reference to the drawings described below, and the claims. The drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of embodiments of the invention. In the drawings, like numerals are used to indicate like parts throughout the various views. 
         FIGS. 1A-1C  schematically illustrate a reading terminal, according to one embodiment. 
         FIG. 2  depicts a network-level layout of a data collection system utilizing reading terminals, according to one embodiment. 
         FIG. 3  depicts component-level layout of a reading terminal, according to one embodiment. 
         FIG. 4  schematically illustrates a system of filtering objects according to one embodiment. 
         FIG. 5  is a flowchart filtering inventory objects using a reading terminal, according to one embodiment. 
         FIG. 6  depicts a screen shown on a reading terminal providing images to a user, according to one embodiment. 
         FIG. 7  is a flowchart for filtering inventory objects using a reading terminal, according to another embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The exemplary embodiments described herein provide detail for illustrative purposes and are subject to many variations in structure and design. It should be emphasized, however, that the present invention is not limited to a particularly disclosed embodiment shown or described. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but these are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present invention. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The terms “a,” “an,” and “the” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced object. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Furthermore, as will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method, or computer program product. Accordingly, aspects of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,” “module” or “system.” In addition, aspects of the present disclosure may take the form of a computer program product embodied in one or more computer readable medium(s) having computer readable program code embodied thereon. 
     Any combination of one or more computer readable medium(s) may be utilized. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM) or similar DVD-ROM and BD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. 
     A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. 
     Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing. Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the “C” programming language or similar programming languages. The program code may execute entirely on the user&#39;s computer, partly on the user&#39;s computer, as a stand-alone software package, partly on the user&#39;s computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user&#39;s computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider). 
     At least some of the present disclosure is described below with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. 
     These computer program instructions may also be stored in a computer readable medium that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks. 
     The computer program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. 
     In retail facilities, it is common for objects to be placed on a plurality of different fixtures. The fixtures can be, for example, shelving units, linear clothing racks, non-linear clothing racks, tables with one or more surfaces, or any combination thereof. Employees are often tasked to periodically determine the current status of inventory within the facility. One option for determining inventory status is to tag each object with an RFID tag and for an employee to approach a fixture with a reading terminal that includes a processor, a memory, a scanning device, a motion sensing device such as an Inertial Measurement Unit (IMU), a communication interface, and a camera system. The employee moves reading terminal with respect to the fixture to detect the presence of one or more objects arranged on the fixture. 
     In one embodiment, there is provided a reader or reading terminal, comprising a radio frequency identifier (RFID) reading device. The reading terminal can be configured to read decodable indicia such as RFID tags containing encoded messages. In one embodiment, the reading terminal can be configured to read an RFID tag containing an encoded message and output raw message data containing the encoded message. In another embodiment, the reading terminal can be configured to read an RFID tag containing an encoded message and output decoded message data corresponding to the encoded message. 
     It should be noted that the terms “reading terminal” and “reader” may be used interchangeably herein. A reader may be a transponder reader, such as a RFID reader, an encoded information reading (EIR) terminal, or any other device which is configured to read data associated with an object from a transponder (e.g., a RFID tag or other information-providing device (e.g., barcode, etc.)). 
     Various embodiments of the reading terminal can be used in a numerous applications, including but not limited to, authentication and access control systems (for example, using smart cards), object tracking in manufacturing and retail, etc. A smart card is an identification card (e.g., a credit card, a pass card) which does not need to be swiped or otherwise physically contacted by a card reader. This capability can be implemented by placing an RFID tag in the card. Object tracking can be implemented by placing an RFID tag on each individual object. In retail, object tracking with RFID tags can be used in conjunction with other technologies such as bar code scanning and payment terminals. Object tracking with RFID tags can be used in loss prevention systems by placing an RFID tag into merchandise objects and placing sensors at exit points. If an exit sensor detects a tagged object with a tag, which was not deactivated at the checkout, an alarm can go off. 
     One embodiment of reading terminal  100  is shown in in  FIGS. 1A  (front panel view),  1 B (side panel view), and  1 C (bottom panel view). reading terminal  100  can comprise housing  52  within which other components of reading terminal  100  can be disposed. LCD screen display with touch screen sensor  54  can be disposed on the front panel  56 . Also disposed on front panel  56  can be decode LED  58 , scan led  62 , and keyboard  64  including scan key  68  and navigation keys  72 . Camera lens  74  of the camera system  353  can be disposed on the top panel of housing  52 . Disposed on the side panel (best viewed in  FIG. 1B ) can be infrared communication port  76 , access door to a secure digital (SD) memory interface  78 , audio jack  80 , and hand strap  82 . Disposed on the bottom panel (best viewed in  FIG. 1C ) can be multi-pin mechanical connector  84  and hand strap clip  86 . 
     While  FIGS. 1A-1C  illustrate a hand held housing, a skilled artisan would appreciate the fact that other types and form factors of terminal housings are within the scope of this disclosure. 
     In a further aspect, the reading terminal can be incorporated in a data collection system. The data collection system, schematically shown in  FIG. 2 , can include a plurality of routers  150   a - 150   z , a plurality of access points  140   a - 140   z , and a plurality of reading terminals  100   a - 100   z  in communication with a plurality of interconnected networks  110   a - 110   z . In one aspect, the plurality of networks  110   a - 110   z  can include at least one wireless communication network. In a further aspect, a reading terminal can comprise a communication interface which can be used by the terminal to connect to one or more networks  110   a - 110   z . In one embodiment, the communication interface can be provided by a wireless communication interface. 
     The reading terminal  100   c  can establish a communication session with the host computer  171 . In one embodiment, network frames can be exchanged by the reading terminal  100   c  and the host computer  171  via one or more routers  150 , base stations, and other infrastructure elements. In another embodiment, the host computer  171  can be reachable by the reading terminal  100   c  via a network  190 , such as a local area network (LAN). In a yet another embodiment, the host computer  171  can be reachable by the reading terminal  100   c  via a network  190 , such as a wide area network (WAN). A skilled artisan would appreciate the fact that other methods of providing interconnectivity between the reading terminal  100   c  and the host computer  171  relying upon LANs, WANs, virtual private networks (VPNs), and/or other types of network are within the scope of this disclosure. 
     In one embodiment, the communications between the reading terminal  100   c  and the host computer  171  can comprise a series of HTTP requests and responses transmitted over one or more TCP connections. In one embodiment, the communications between the reading terminal  100   c  and the host computer  171  can comprise VoIP traffic transmitted over one or more TCP and/or UDP ports. A skilled artisan would appreciate the fact that using other transport and application level protocols is within the scope and the spirit of the invention. 
     In one aspect, at least one of the messages transmitted by the reading terminal can include decoded message data obtained from decodable indicia  600  (e.g., a bar code label or an RFID label) attached to a product or to a shipment object. For example, a reading terminal can transmit a request to the host computer to retrieve product information corresponding to a product identifier encoded by a bar code label attached to the product, or to transmit a product tracking record for a product identified by a bar code label attached to the product. 
     Component-level diagram of one embodiment of a reading terminal is now being described with references to  FIG. 3 . Reading terminal  100  can comprise at least one microprocessor  310  and a memory  320 , both coupled to the system bus  370 . In one embodiment, memory  320  may store a database. The microprocessor  310  can be provided by a general purpose microprocessor or by a specialized microprocessor (e.g., an ASIC). In one embodiment, reading terminal  100  can comprise a single microprocessor which can be referred to as a central processing unit (CPU). In another embodiment, reading terminal  100  can comprise two or more microprocessors, for example, a CPU providing some or most of the reading terminal functionality and a specialized microprocessor performing some specific functionality. A skilled artisan would appreciate the fact that other schemes of processing tasks distribution among two or more microprocessors are within the scope of this disclosure. 
     Reading terminal  100  can further comprise a communication interface  340  communicatively coupled to the system bus  370 . In one embodiment, the communication interface can be provided by a wireless communication interface. The wireless communication interface can be configured to support, for example, but not limited to, the following protocols: at least one protocol of the IEEE 802.11/802.15/802.16 protocol family, at least one protocol of the HSPA/GSM/GPRS/EDGE protocol family, TDMA protocol, UMTS protocol, LTE protocol, and/or at least one protocol of the CDMA/IxEV-DO protocol family. Module  360  is an additional modular component that can replaced with upgraded or expanded modules and is disposed between the system bus  370  and communication interface  340 . This module  360  is compatible with, for example, auxiliary hard drives (including flash memory), RAM, communication interfaces, etc. 
     Reading terminal  100  can further comprise a camera system  353  and an image interpretation and processing module  388 . In one embodiment, the image interpretation and processing module  388  receives image data from camera system  353 . 
     Reading terminal  100  can further comprise a keyboard interface  354  and a display adapter  355 , both also coupled to the system bus  370 . Reading terminal  100  can further comprise a battery  356 . In one embodiment, the battery  356  can be provided by a replaceable rechargeable battery pack. 
     Reading terminal  100  can further comprise a GPS receiver  380 . Reading terminal  100  can further comprise at least one connector  390  configured to receive a subscriber identity module (SIM) card. 
     Reading terminal  100  can further comprise one or more EIR devices  330 , provided, for example, but not limited to, by an RFID reading device, a bar code reading device, or a card reading device. In one embodiment, the RFID terminal can be configured to read an encoded message from a decodable indicia using EIR device  330 , and to output raw message data containing the encoded message. In another embodiment, the RFID terminal can be configured to read an encoded message from a decodable indicia using EIR device  330 , and to output decoded message data corresponding to the encoded message. As used herein, “message” is intended to denote a character string comprising alphanumeric and/or non-alphanumeric characters. An encoded message can be used to convey information, such as identification of the source and the model of a product, for example, in a UPC code. 
     Of course, devices that read bar codes, read RFID, or read cards bearing encoded information may read more than one of these categories while remaining within the scope of this disclosure. For example, a device that reads bar codes may include a card reader, and/or RFID reader; a device that reads RFID may also be able to read bar codes and/or cards; and a device that reads cards may be able to also read bar codes and/or RFID. For further clarity, it is not necessary that a device&#39;s primary function involve any of these functions in order to be considered such a device; for example, a cellular telephone, smartphone, or PDA that is capable of reading bar codes is a device that read bar codes for purposes of this disclosure. 
     As noted herein supra, in one embodiment, reading terminal  100  can further comprise an RFID reading device  333 . Reading terminal  100  can be configured to read RFID tags containing decoded messages. In one embodiment, the RFID terminal can be configured to read, using RFID reading device  333 , an RFID tag containing an encoded message, and to output raw message data containing the encoded message. In another embodiment, the RFID terminal can be configured to read, using RFID reading device  333 , an RFID tag containing an encoded message, and to output decoded message data corresponding to the encoded message. 
     In a further aspect, the RFID reading device can comprise an antenna  338 . Antenna  338  is configured to transmit and receive electromagnetic energy to and from an area within a reception area of the antenna. The antenna may be sized so as to transmit at a frequency used for RFID communications. The antenna may transmit interrogation signals and response signals returned by RFID tags. 
       FIG. 4  illustrates reading terminal  100  wirelessly interacting with transponders associated with a plurality of inventory objects ( 404 A- 404 N,  405 A- 405 N,  406 A- 406 N, etc.). The inventory objects may be objects that are available for purchase in a retail establishment, such as clothing, perishable items, home items, etc. The inventory items in  FIG. 4  are shown within categories  500 A- 500 N, and categories  500 A- 500 N can be of any type. For example, categories  500 A- 500 N may each represent one of: a plurality of shelves on a fixture, a plurality of fixtures, a plurality of types of inventory objects (e.g., pants, shirts, socks, belts, hammers, saws, staplers etc.), a plurality of colors of inventory objects, a plurality of gender categories for inventory objects, a plurality of sizes of inventory objects (e.g., small, medium, large, etc.), a plurality of retail classifications (e.g., sale, clearance, restricted from sale to minors, etc.), a plurality of brand names of inventory objects, a plurality of price ranges, any other category, or any combination thereof. Furthermore, each inventory object  404  may be classified into more than one category. For example, inventory object  404 A may be located on the “second shelf” of the “fourth fixture” and may be classified in the “red” color category and the “large” size category. A user may be allowed to combine multiple categories in a Boolean style operation. It should be noted that while  FIG. 4  illustrates the objects  404 A-N,  405 A-N,  406 A-N, and  408  as being categorized, it should be understood that these objects may be intermingled on the same fixture or on different fixtures. For example, jeans (e.g.,  404 A) and shirts (e.g.,  405 A) may both be on the same fixture (not shown in  FIG. 4 ), and possibly on the same shelf or even somehow in the same pile of clothing on the fixture. Additionally, the objects of the same category (e.g., one or more objects  404 A-N) may be placed on separate fixtures. 
     Data associated with the inventory objects may be stored in a database  414 . For example, information associated with a pair of jeans may be a database entry stored in the database  414  having the category name for jeans, an identification code identifying the item as jeans, an image of jeans, and/or any other information related to the jeans. The database  414  includes database entries for each object on the fixture and each object is associated with the type/category of the object (e.g., jeans may be associated with the “jeans” category or “clothing” category). In some embodiments, an image is stored in each database entry based on the object type. For example, an image of jeans for jeans, an image of shirts for a shirt or a top, an image of a shirt for a t-shirt, and the like may be stored in the database for each respective object entry. In one embodiment, the database entry has a code stored in each database entry which is associated with an image. A series of images are stored in a database and are associated with each particular image. 
     The objects may be associated with multiple categories. For example, jeans may be categorized under general categories of “clothing,” “pants,” “jeans,” “Company X products,” etc. and/or may be categorized under a specific category specifically identifying the object “XXX jeans by Company X” or “product code #####.” 
     In one embodiment, an image is associated with the object in the database for each corresponding category. Referring back to the above example, if jeans are associated with category “jeans” and category “pants,” two images may be associated with the database entry for jeans. Thus, an image of jeans and a different image of pants may be associated with jeans in the database. 
     In one embodiment, the image may be an actual image of the jeans. For example, if the category is the specific description of the particular jeans (i.e., XXX jeans by Company X), the image may be of the actual jeans. However, it should be understood that generic images of the jeans may also be used and thus, generic images of the category may be used instead of actual pictures of the objects. 
     The reading terminal  100  may access a network  190  to access the database  402  which may be remote from the reading terminal  400 . In addition, or alternatively, the reading terminal  400  may include the database  402 . The reading terminal  400  may access one or both of these databases and communicate with these databases with the database communication interface  410  resident on the reading terminal. 
     It should be understood that reading terminal  400  may include the features and components of reading terminal  100 . For example, reading terminal  400  of  FIG. 4  may include a hardware processor  310 , memory  320 , a wireless communication interface  340 , a RFID reading device  333 , an antenna  338 , and/or any other feature of reading terminal  100  of  FIG. 3 . 
     The reading terminal  400  also may include a filtering images module  412 . The filtering images module  412  is configured to communicate with the database communication interface to obtain images from the image database  412 . The filtering images module  412  is further configured to select the appropriate image from the image database based on certain parameters from the scan. 
     As shown in  FIG. 5 , in one embodiment, a user identifies a fixture and/or a portion of a fixture to scan (block  502 ). For example, an employee at a retail store may be tasked with inventorying jeans on shelf “ 15 J.” The employee physically moves the reading terminal  100  proximate to the shelf so that the shelf is within the scanning area of reading terminal  100 . The reading terminal  100  may be moved into place prior to the scanning process or after the scanning has begun. 
     In block  504 , the reading device  100  receives a command to begin scanning process at the fixture. The command may be a user activating a button indicating that the reading terminal should begin transmitting interrogation signals to RFID tags, for example. The reading terminal may be initialized so that all transponders of objects are marked as not reconciled or not yet scanned according to an embodiment. In response to receiving the command, the process  500  may proceed to block  506 . 
     At  506 , the reading terminal begins scanning an area about the fixture so that transponders associated with the inventory objects on the fixture may be scanned. It should be understood that the reading terminal may scan transponders using RFID signals or may scan using some other type of technology, such as scanning barcodes using a barcode scanner. In any event, the reading terminal receives scan data for items (e.g., RFID tags, barcodes, etc.) associated with the inventory or objects of interest. 
     It should be noted that the term objects is used herein broadly. In this regard, objects refers to physical items (e.g., retail store inventory items) which each have a transponder associated therewith and/or attached therewith, according to one embodiment. 
     In block  508 , a determination is made as to whether any objects are left to be reconciled. Since the reading terminal  100  has begun scanning, none of the objects&#39; transponders have been reconciled. However, when each object&#39;s transponder has been scanned and processed for each scanning session (i.e., each time process  500  is performed from start to finish), such transponder may be marked as scanned or reconciled and may not be scanned and processed again for the scanning session. If there are transponders left to be reconciled, the process  500  may proceed to  510 ; otherwise, the process  500  may proceed to  532  where an inventory report is submitted to the system and/or displayed on the display screen of the reading terminal. 
     In  510 , the reading terminal scans a transponder of an object by sending out an interrogation signal to an area of the reading terminal. The transponder then responds with data contained therein. Such data may include an identifier. The transponder identifier may be used to query the database as is discussed in more detail below with regard to block  512 . The identifier may be any data associated with or identifying the object and/or transponder. For example, the identifier may be an alphanumeric code (e.g., a product code) that, when read, is understood to indicate that the object is jeans having certain parameters (e.g., brand, color, size, price, etc.). It should be noted that the identifier may be encoded and as such, the reading terminal (or another computing device) may decode the encoded data to determine the identifier. 
     In  512 , the reading terminal determines or obtains category data associated with the object. This may be accomplished by the reading terminal querying the database with the transponder identifier, which would then return category information associated with such identifier. The database contains database entries that contain category information associated with each object identifier. The reading terminal transmits a query for category data along with the identifier determined from the scanned transponder. The database then returns the category data, and the reading terminal assigns the detected inventory items to the returned category  500 . 
     As described above in reference to  FIG. 4 , each inventory item ( 404 ,  405 ,  406 , etc.) can be assigned to multiple categories  500 . For example, jeans may be assigned to a “jeans” category or a “pants” category, while short sleeve shirts may be assigned to a “shirts” category or “short sleeve shirts” category. These categories may be predefined so that the categories are predetermined prior to the inventory being assigned to the categories. 
     Referring back to  FIG. 5 , at  514 , the process obtains a one or more images, each image corresponding to one of the categories  500 . The images may be obtained from a database. The database contains database entries that contain at least one image for each category for each respective object scanned (as each of the images is different from each other). For example, for the category of jeans made by Company X, there may be a particular image displayed, while there may be a different image associated with the general category of jeans made by Company Y. 
     As described above in relation to  FIG. 4 , the database may be a remote database  401  or a local database  402 . The remote database may be a database that is stored on a computer communicative with the reading terminal over a network while the local database may be a database residing on the memory of the reading terminal. 
     At  516 , a list of the scanned objects, relevant categories of the objects, and corresponding images of the objects obtained from the database may be displayed on the display screen of the reading terminal  100 . An example of information related to the display screen and the information displayed thereon is illustrated at and discussed below with regard to  FIG. 6 . In this regard, the objects or items scanned may each be displayed on the display screen with a corresponding image according to one embodiment. This may be a display where a listing of items scanned is displayed sequentially on the display screen. Each line may represent a different item scanned and on each line, the display may show a graphical representation of the item as well as a textual description of that item (e.g., category, name, color, size, brand, etc.). In another embodiment, only one image may be presented on the display screen for each category of items displayed and associated with the single image for that category may be a listing of items (or merely the number of items scanned) that falls under that category. For example, the display screen may show a picture of Company X blue jeans and state that there were 40 items founds that fall under that category. This may occur for each category. 
     The images displayed on the display screen may be selectable. For example, the images may have an embedded or adjacent checkbox or other activation means associated therewith to allow for a user to select an image. 
     In one embodiment, the interface only displays a single graphical image on the interface for each object. In this regard, the quantity and other associated data may not be displayed. 
     In  518 , the reading terminal  100  determines whether the scanned objects that are displayed on the interface are each assigned to the same category set. In this regard the scanned items that are displayed on the interface may be exact duplicates of one another or have at least one shared feature (e.g., same color, size, brand, etc.) as defined by the user. If one or more of the displayed scanned objects are not in the same category (e.g., an object is in the “jeans” category while another object is in the “shirts” category), the process may proceed from  520 . If all items displayed on the interface are in the same category, the process  500  may proceed back to  508  to continue scanning fixture for additional objects/transponders. 
     At block,  520 , the reading terminal notifies the user that the scan results in displayed objects under multiple categories and category filtering may be necessary to narrow the items that belong to a single category. A user interface may be presented on the display of the reading terminal  100  for the user to select/deselect objects to be displayed on the reading terminal in response to scanning the transponders on the fixture. 
     It should be noted that the scanning may be interrupted at any time by the user to stop scanning so that the user can filter the objects displayed. The user can then resume scanning as desired. In one embodiment, the user can filter the categories (and thus, filter the objects displayed) in real-time (i.e., while the reading terminal is scanning the transponders of the objects on the fixture). 
     In  522 , the system determines whether a filtering command (e.g., confirmed the selection or deselection of one or more categories using the displayed images on the display screen) has been entered by a user and received by the reading terminal. The command may be a request generated by the reading terminal in response to the user activating a button or the like with the reading terminal using a communication interface. The command and/or request is indicative of the user desiring to filter the scanned objects to identify items falling under the selected category(ies). 
     As mentioned above, the user may select or deselect images using the displayed images on the display screen. This may be accomplished by selecting on the screen a checkbox or other portion of the interface associated with each respective image. In one embodiment, the user can select the particular image of interest (e.g., an image of jeans) and the reading terminal would receive such selection. The user may select multiple images if the user wishes to display objects pertaining to multiple categories. Regardless, after the user provides the category selection(s), the user provides an indication that the user has completed the filtering command/request by submitting the selections to the reading terminal. 
     In response to receiving the filtering command/request, the process may proceed to  524  where the reading terminal applies a category filter using the selections submitted by the user. In this regard, the reading terminal only displays on the display screen objects associated with those transponders that have been scanned and that are associated with the categories selected by the user via the filtering command/request. As such, the user can selectively display the objects on the display screen by selecting the images corresponding to specifically-desired categories. 
     In applying the category filter, the reading terminal hides (or otherwise removes) the data associated with those categories that were not selected (or deselected) by the user. In this regard, the data displayed on the display screen is then removed by the reading device so that the only data displayed is associated with the selected images and corresponding category(ies). If the user wishes to unhide the hidden objects, the user may select an option to allow all categories (and thus, images to all scanned objects) to be displayed. 
     After (or while) the category filter is/has been applied, the process  500  may proceed back to block  508  to continue scanning transponders of objects remaining on the fixture. If the reading terminal determines if there are more items to scan, the remaining unscanned objects are scanned. If there are no remaining items to scan (e.g., the reading terminal is determines that the scan is complete because all responses to the interrogation signals have already been received and processed), the process  500  may proceed to  532  and the inventory report is submitted (e.g., to the display screen or to another destination). 
     Blocks  510 - 524  are performed until all transponders have been scanned/reconciled or if the user has stopped the scanning, according to some embodiments. 
       FIG. 6  illustrates one embodiment of a graphical user interface  600  on the display screen of the reading terminal  100 . The interface  600  is used to display images and a listing of objects where the transponder thereof has been scanned. As illustrated, at least four different types of objects (i.e., female Levis jeans, male Levis jeans, RL tops, and Hanes shirts) on a fixture have been (or are currently being) scanned. These objects are displayed on the interface along with an image  602  associated with each particular category. The user can scroll in the interface to view the other category of objects scanned. 
     The interface  600  allows for the user to select/deselect images to filter the categories of items to be displayed on the display screen. The interface  600  may include a plurality of tabs  601  which a user can select to change interfaces and modes for the reading terminal  100 . For example,  FIG. 6  illustrates that the RFID scanning mode has been selected. As such, the reading terminal scans for transponders on a fixture under this portion of the interface. The other tabs  601  may correspond to a barcode scanning portion and a database access tool. 
     In one embodiment, the interface  600  includes images  602 , where each image  602  indicates a different category. Each image may include a selection indication box  602   a  (e.g., a checkbox) which allows the user to select/deselect the image (and thus, the category corresponding to the image). As illustrated in  FIG. 6 , an image  602   b  associated with female Levis jeans has been checked. In this regard, the user has indicated that she would like the interface to only display those objects that have been scanned that fall under the “female Levis jeans” category. When the user applies the selection of this category, only the objects (in this case 9 objects) will be shown on the interface. In this regard, the men&#39;s jeans, tops and t-shirts will not be displayed on the interface. 
     In addition to the image provided in the interface, the interface may also display additional information  606  (e.g., brand, color, size, and/or any other information pertinent to the object). In one embodiment, the category may also include quantity information  605  which relates to how many objects falling with that category have been scanned. The interface  600  may also indicate the current status  604  of the reading terminal  100  (e.g., “scanning,” “paused,” “completed,” “error,” etc.) and provide further options  603  (e.g., a button for starting/stopping scanning, etc.). 
     Another embodiment of a method  700  for filtering inventory is illustrated in  FIG. 7 . At  702 , a user identifies a fixture and/or a portion of a fixture to scan similar to block  502  of  FIG. 5 . 
     At  704 , an interface is presented to the user to select items that the user desires to scan. The interface may be an interface which allows the user to browse all possible categories. The reading terminal queries the database to determine the categories to present to the user. The list of categories is, therefore, obtained from the database and is associated with object data stored on the database. Corresponding images are also obtained from the database. The interface displays both the images and categories. For example, the interface may display an image of jeans cut for females are illustrated with the category “female Levi jeans” after obtaining such data from the database. The image presented may be selectable so that the user can select a category using the image. In one embodiment, a checkbox or other selectable device may be provided for each category so that the user can select the particular category. 
     It should be understood that multiple categories may be selected or only one category may be selected. For example, the user may select only the “female Levi jeans” category so that only jeans matching this category are displayed. 
     In block  706 , the reading terminal receives a selection of the categories of objects desired to be scanned (e.g., from a user providing such selection via the interface on the display). The reading terminal saves such information in memory for use with regard to block  718 . 
     Blocks  708 - 716  correspond to blocks  504 - 512  of  FIG. 5  in that a command or request is received and transponders are scanned. A transponder of an object is scanned in block  714  and, in block  716 , the category of the scanned object is determined by querying the database with the transponder&#39;s identifier. 
     At block  718 , the reading terminal (or other device) determines if the category associated with the scanned object in the database matches the user-selected categories (selected in block  706 ). The reading terminal may compare the selected categories with the category of the scanned object. If a match is determined, the process  700  may proceed to  720 ; otherwise the process  700  may proceed back to  712  where the next transponder is scanned. 
     At  720 , the scanned object is displayed on the interface of the display screen (along with other displayed objects if any previously-scanned objects are already displayed and which match the selected category). This allows the reading terminal to build a list of scanned objects which match the categories selected by the user (using images of the categories/objects). Other data may also be displayed on the interface similar to block  516  discussed above with reference to  FIG. 5 . 
     Blocks  722 - 724  are similar to block  522 - 524  of  FIG. 5 . In this regard, the user may change or add any additional categories to the currently-selected categories if desired. This way, the user can change the objects desired to be displayed or scanned during the scanning process. If the user does not desire to change/add categories, the process  700  may proceed back to block  712  and block  714  where each additional unscanned object is scanned. Thus, the process of blocks  712 - 720  is repeated until all objects have been reconciled. 
     In one embodiment, the reading terminal may be able to determine the identifiers that should be scanned during the scan by querying the database prior to block  708 . In this regard, the reading terminal could query the database for all items corresponding to the selected categories. In response thereto, the database would forward to the reading device the transponder identifiers that are associated with the selected categories. Then, during the RFID scanning procedure, if each transponder&#39;s identifier does not match one of the identifiers downloaded from the database, the reading terminal would not access additional information about that transponder or the object associated therewith and thus, would not display the object on the interface. 
     It should be noted that the fixtures can be any physical structure configured to support objects with transponders, such as shelving units, linear clothing racks, non-linear clothing racks, tables with one or more surfaces, or any combination thereof. 
     In light of the above, a user is allowed to select an image to filter objects that are displayed on the interface to the user. This allows an ease of filtering items because the user can visually ascertain which objects should be filtered in a quick manner. The user need not read textual data to determine which items should be filtered. Additionally, the images may match with the ones that the user is viewing on the fixture to be scanned and thus, an image provided directly to the user on the reader may be advantageous. Moreover, the images may be selectable, adding to further ease of filtering. A user who cannot read or understand the language presented may be able to scan using the images as discussed herein. Regardless, embodiments of the present disclosure provide a more efficient and more effective means of filtering scanned data, especially in an inventorying context. 
     The flowcharts and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. 
     The corresponding structures, materials, acts, and equivalents of all means or step plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. The description of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to embodiments of the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of embodiments of the disclosure. The embodiments were chosen and described in order to best explain the principles of embodiments of the invention and the practical application, and to enable others of ordinary skill in the art to understand embodiments of the invention for various embodiments with various modifications as are suited to the particular use contemplated. 
     The foregoing descriptions of specific embodiments have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain principles and practical applications of the invention, and to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but these are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present invention. The following claims are in no way intended to limit the scope of embodiments of the invention to the specific embodiments described herein.