Wireless identification based display

[0001] The present invention relates to the output of messages based on wireless identification and/or optionally scanned bar code identification.

[0002] A point of sale system is provided which comprises a processor, a display, an input which receives scanned bar code information and provides the scanned bar code information to the processor, an output which receives the scanned bar code information from the processor and provides the scanned bar code information to an electronic cash register, and a wireless information reader which receives information and provides the information to the processor. The processor outputs information on the display based on the scanned bar code information and/or information received by the wireless information reader.

[0003] A method for displaying promotional information at an electronic cash register comprises receiving a wireless identification signal and determining whether the wireless identification signal identifies a customer or a product. A message is displayed based on the wireless identification signal.

[0009] In accordance with exemplary embodiments, a system and method provide personalized messages at a point-of-sale terminal based on an identification of a customer and/or a product. Specifically, each customer is provided with a card which contains a mechanism which can be read wirelessly. The mechanism can be a radio frequency identification (RFID) tag. Products can also contain RFID tags. However, in instances where products do not contain RFID tags, exemplary embodiments provide for an identification of a product using scanned bar code information.

[0010] In accordance with exemplary embodiments, the message is provided to a customer in a discreet manner. For example, the message can be displayed in a manner in which only the customer to which the message is intended can view the message. Alternatively, or additionally, the message can include an audible portion which can be heard by the customer to which the message is intended or heard within a limited distance in the vicinity of the customer.

[0011] FIGS. 1A-1C illustrate portions of an exemplary point of sale system. The portion 100 is typically referred to in the art as a “change pad.” Change pads are typically located at a point of sale system, and are used as a surface for signing credit card receipts. The exemplary change pad includes a first portion 110 and a second portion 120. The change pad 100 can have a transparent top window covering the display. The top window may be made of glass, coated glass, hard crystalline material such as sapphire or quartz, clear polymer or coated polymer, or other transparent materials resistant to scuffing and breakage. The window may be embedded in a resilient material, such as rubber or other elastomers, to absorb shock and assist in sealing the window from liquid spills. Additionally, the window may be coated with a textured transparent surface.

[0012] Portion 110 includes display 115. In accordance with exemplary embodiments, display 115 can be a touch screen display allowing a customer to interact with the system, for example allowing a customer to select a particular promotion from a list of promotions. Alternatively, or additionally, the customer interaction can be performed using push button switches (not illustrated).

[0013] In order to provide discreet messaging, the display 115 can incorporate directional viewing properties such as those typically found in LCD displays. Moreover, the display 115 can incorporate lenses, such as lenticular arrays or holographic optical elements to manage the viewing angle. Other types of directional viewing materials, such as the microreplicate limited viewability angle materials manufactured by 3M Company, may be incorporated into the window to provide discreet messaging. In one embodiment, the display screen and its directional viewability lens can be segmented to simultaneously provide one message viewable only by the consumer and another message viewable only by the retail clerk. The directional lens can be in the form of holographic optical elements, and the segmentation can be in the style of a mosaic or lenticular array lens. If a segmented display is provided, the messages provided to the consumer and the retail clerk, based on the identification of the consumer and/or the product, can be different messages.

[0014] The change pad includes a 120 volt to 12 volt transformer 125, a bar code scanner input 130, a bar code scanner output 140, and a wireless communications unit 150. Transformer 125 is used to provide the appropriate amount of power required by change pad 100. Although a particular type of transformer is described, any transformer which provides the appropriate voltage required to operate the system can be employed. A bar code scanner typically interfaces directly with an electronic cash register. In accordance with exemplary embodiments, the bar code scanner interfaces with the change pad 100 via bar code scanner input 130. To provide the scanned bar code information to an electronic cash register, bar code scanner output 140 is provided. By providing the bar code scanner input and output, a preferred embodiment can use the scanned bar code information to identify the product without interfering with the normal operation of the bar code scanner and its interaction with an electronic cash register.

[0015] Wireless communication unit 150 is employed for transmitting and receiving information for the operation of change pad 100. In an exemplary embodiment, wireless communication unit 150 operates in accordance with the IEEE 802.11b communication standard, although other wireless communication protocols, such as IEEE 802.11g, or wired Ethernet connections may be used.

[0016] The change pad 100 also includes a first and second antenna, which respectively produce wireless reading fields 160 and 170. Wireless reading field 160 reads information directly above the change pad 100 and wireless reading field 170 reads information from customers and/or products which are approaching the electronic cash register and the change pad 100. In accordance with exemplary embodiments, the antennas which produce wireless read fields 160 and 170 are connected to wireless information readers which read RFID tags.

[0017] Wireless read fields 160 and 170 can be either magnetic fields or electrical fields depending upon the type of RFID tags to be read. For inductively coupled RFID tags, wireless read fields 160 and 170 are magnetic fields. The RFID tag receives the magnetic energy of the magnetic field and modulates the magnetic field. The wireless information reader reads the modulated magnetic field to identify the RFID tag. The system correlates the identification of the RFID tag with a customer and/or product based upon previously stored information. Capacitively coupled RFID tags operate in a manner similar to the inductive coupled RFID tags except that the RFID tag modulates the electric field, and the modulated electric field is used to identify the RFID tag.

[0018] With respect to wireless reading field 170, situations may occur where there are more than one RFID tag present in this field. However, it is desirable that the message is based on only the RFID tag most proximate to the point of sale system. To address these situations, exemplary embodiments employ logic which can detect the proximity of the read RFID tags. Specifically, based upon the strength of the signal read from the RFID tags, the system can determine that the strongest signal corresponds to the RFID tag most proximate to the point of sale system. Additionally, the system can employ a signal strength threshold to control how close an RFID tag must be before a message is presented. For example, based upon routine testing it can be determined that a predetermined signal strength corresponds to a predetermined distance from the point of sale terminal. This predetermined distance is selected to ensure that the message is provided only to those for whom the message is intended.

[0019] FIG. 2 illustrates components of the change pad in accordance with one embodiment. In accordance with exemplary embodiments the change pad 100 is controlled by processor 210. Processor 210 can be, for example, an Intel X-scale IXP 420 266 MHz core microprocessor. The microprocessor 210 controls display 115. Specifically, display 115 can comprise graphic engine 212 and liquid crystal display (LCD) 215. The LCD can be powered by power supply 222 via power supply subsystem 224. Power supply subsystem 224 also provides power to all of the other elements of the change pad. In accordance with exemplary embodiments the LCD can be a 10 inch SVGA TFT (super video graphics array thin film transistor) LCD with a high output CCFL (cold cathode fluorescent lamps) backlight. To drive such a display, in exemplary embodiments, graphic engine 212 can be an 800×600×24 graphic engine. It will be recognized that the present embodiments are not limited to the use of a particular type of display or graphics engine. The microprocessor 210 receives scanned bar code information from bar code scanner via RS-232 interface 230, and provides the scanned bar code information to an associated electronic cash register via RS-232 interface 240.

[0020] The operational program for processor 210 is contained within memory systems 280 and 285. Although particular types of memory and size of memories are illustrated in FIG. 2, other types of memories and sizes of memories can be employed with exemplary embodiments. In order to receive information from a customer and/or product database, wireless bridge 250 is provided.

[0021] The wireless information reading subsystem comprises RF front end 255, top near-field antenna 260 and front far-field antenna 270. In accordance with exemplary embodiments RF front end 255 is a dual channel ThingMagic AutoID RF front end. The top near-field antenna 260 produces the reading field 160 of FIG. 1, and front far-field antenna 270 produces the reading field 170 of FIG. 1. USB (universal serial bus) 1.1 communication interface 235 is provided for connection of additional components. For example, the USB 1.1 communication interface 235 can be used to connect a camera or biometric identity device to identify a customer. Additionally, this interface can be used for connection of a memory device, such as a USB flash RAM (random access memory) memory. The interface can also be used for connection of a local configuration or diagnostic computer.

[0022] A magnetic stripe reader 242 and/or a Smart Card Reader/Writer 244 is connected to the processor 210 via a general purpose input/output (GPIO) interface. The push buttons described above in connection with FIG. 1 can connect to the processor 210 via the GPIO, or any other type of interface.

[0023] FIG. 3 illustrates an exemplary change pad in accordance with another embodiment. The embodiment illustrated in FIG. 3 contains many of the same components arranged as described above in connection with FIG. 2, and hence, a detailed description of these components can be found above. For bar code scanners and electronic cash registers which do not employ a RS-232 interface, a scanner adapter card 330 can provide an interface between the processor 210, the scanner and the electronic cash register. Additionally, instead of employing the built-in medium access control (MAC) interface, the 802.11b bridge can be provided in the form of a mini-PCI card which interfaces with the processor 210 via bus 390. Additionally, as illustrated by flash RAM 380, additional memory can be provided for the operation of the system.

[0024] FIG. 4 is a software block diagram of the change pad and supporting systems in accordance with exemplary embodiments. The logic components are broken down into six categories, the RF subsystem 410, the electronic cash register-universal code subsystem 420, the database web services subsystem 430, the display subsystem 440, the communications subsystem 450 and the miscellaneous services subsystem 460.

[0025] In accordance with exemplary embodiments, the database 416 can be the Savant relational database system designed by MIT. The authentication logic 418 authenticates the information read by wireless information reader 412 from wireless information tags on cards and/or products.

[0026] The serial communication interface 422 controls the signal between the RS-232 interfaces and the Universal Product Code (UPC) trigger logic and coupon generator 426. The UPC trigger logic and coupon generator 426 includes UPC lookup 424. The UPC trigger logic and coupon generators 426 compare scanned bar code information to stored bar code information to determine whether a promotion should be provided to a customer. The UPC trigger logic and coupon generator uses the scanned bar code information to determine whether a virtual coupon should be provided to the associated electronic cash register. Promotion logic 428 interfaces between the UPC trigger logic and coupon generator 426 and web service 434. The promotion logic 428 can automatically generate a promotion for display in browser 444 using JPEG (Joint Photographic Experts Group) image files, predefined fonts, and/or predefined text. As a result of the promotion logic, the use of the virtual coupon and thus the resulting price reduction can be provided to a manufacturer or vendor of the product, wherein in turn, a payment for the price reduction can be sent from the manufacturer or vendor.

[0027] In accordance with exemplary embodiments, web service 434 can be a Bamboo/SQL (Structured Query Language) service (such as produced by ThingMagic), an Apache web server or other lightweight web service engine. Web service 434 accesses open file system 432 for generation of the information to be displayed in browser 444. Open file system 432 includes a browser cache and an encrypted file system. Database web service subsystem 430 includes cache 432 and web service 434.

[0028] The display is driven by a graphical user interface display driver 442 and a video buffer (not shown). The video buffer can be, for example, a 24 bit XVGA (Extended Video Graphics Array) video buffer.

[0029] Access to information from the Internet is provided by TCP/IP (Transmission Control Protocol/Internet Protocol) protocol stack 456 and authentication cryptographic component 458 in a conventional manner.

[0030] The software runs on a Linux Operating System 461. The Linux Operating System 461 provides the basic operating system functionally for the system, including memory management, task management, file system services and control of input/output devices. Other small kernel network capable, multitasking operating systems, such as MICROSOFT CE.NET, Radisys's 059, or Windriver System's Vxworks can be employed. The Java Engine 463 is the virtual machine for execution of Sun Microsystem's Java standard code, such as J2ME VM. Revision management component 465 maintains a listing of the version of each software component employed by the system. The event log 467 is a timed stamped log service where unusual events or errors are logged in sequence and saved to the file system for future review. The monitor 469 provides a real-time view of system operation and resources, and provides an HTML accessible web page of this information accessible through the web service engine.

[0031] FIG. 5 illustrates an exemplary method of using a preferred point of sale system. Initially, it is determined whether a wireless identification signal has been received (step 503). If a wireless identification signal has not been received (“NO” path out of decision step 503), then it is determined whether scanned bar code information has been received (step 506). If it is determined that scanned bar code information has not been received (“NO” path out of decision step 506), then a default message is output (step 509). If, however, scanned bar code information is received (“YES” path out of decision step 506), then a message is output based on the scanned bar code information (step 512). The message can be an audio and/or a visual message. The virtual coupon is output to an associated electronic cash register.

[0032] If it is determined that a wireless identification signal has been received (“YES” path out of decision step 503), then it is determined whether the wireless identification signal identifies a customer or a product (step 515). After it has been determined whether the wireless identification signal identifies a customer or product, it is determined whether an additional wireless information signal has been received (step 518). If an additional wireless identification signal has been received (“YES” path out of decision step 518), then it is determined whether the wireless identification signal identifies a customer or a product (step 515). As can be seen from the feedback loop from step 518 to step 515, exemplary embodiments can employ wireless identification signals from both a customer and/or one or more products.

[0033] If it is determined that no additional wireless identification signals have been received (“NO” path out of decision step 518), then it is determined whether scanned bar code information has been received (step 521). If scanned bar code information is not received (“NO” path out of decision step 521), then a message is output based on the received wireless identification signal (step 524). If, however, scanned bar code information is received (“YES” path out of decision step 521), then a message is output based on the received wireless identification signal and scanned bar code information (step 527).

[0034] Although the present invention has been described above in connection with particular exemplary embodiments, the present invention can include other variations. For example, in addition to, or as an alternative to, the use of a display, an audible message can be provided to the consumer. The audible message can be used with a localized sound projection system. The localized sound projection system can employ parabolic or spherical reflector localizers or hemispheric domes which are commercially available as “Localizers” products produced by Brown Innovations in Chicago, Ill. Alternatively, or additionally, ultrasonic parametric array sound localizers, such as those produced by Holosonic Research Labs, Inc. in Watertown, Mass. or the American Technology Corporation in San Diego, Calif. may be employed. As an alternative, emitters of the ultrasonic parametric array can be placed into the area surrounding the change pad such that their audible area can be pre-focused into the same area into which the visual display is optimized. The pre-focusing can be performed by phase shifting the emitters to create a non-normal beam and/or by tilting the emitters in the desired direction.

[0035] As described above, the type of message provided is based on the identification of a customer and/or a product. Accordingly, the system may be provided to the retail establishment by a particular company. The particular company can then display messages intended to direct the customer towards the particular company's products. For example, if it is determined that the customer is about to purchase a product from a competitor, the message can inform the customer that a discount will be provided if the customer purchases a similar product from the particular company.

[0036] One embodiment of a point of sale system can be a cigarette kiosk. For example, in a cigarette kiosk, a bar code for a cigarette package can be scanned to an electronic cash register while a wireless information reader can read a loyalty card with an RFID tag of a customer possessing the cigarette package. Using information from the card and/or the bar code, customer specific cigarette promotional information, such as specifying the customer and/or a cigarette brand by name, can be sent to the customer, by means of a display in the kiosk. The information can be provided discreetly with increased privacy by means of a limited viewing angle display or a limited area audible transmission. By providing the information discreetly, the customer can receive customer and/or cigarette brand specified information, while other people around the customer will not necessarily be exposed to the information provided to the customer.

[0037] The preferred embodiments are merely illustrative and should not be considered restrictive in any way. The scope of the invention is given by the appended claims, rather than the preceding description, and all variations and equivalents which fall within the range of the claims are intended to be embraced therein.