Patent Publication Number: US-7591430-B2

Title: Point-of-sale terminal

Description:
This application claims priority under 35 U.S.C. 119(e) to U.S. Provisional Patent Application No. 60/737,078 entitled “POINT-OF-SALE TERMINAL,” filed Nov. 15, 2005, the disclosure of which is incorporated herein by reference. 
    
    
     BACKGROUND 
     Point-of-sale (POS) terminals allow customers to pay for purchases using a wide variety of payment methods, such as with credit cards, debit cards, and gift cards and other prepaid cards, among others. Typically a terminal includes a card reader, a keypad, a display, additional reprogrammable keys surrounding the display, a printer, and a communication capability, e.g., a serial port, a parallel port, Ethernet, or a wireless transceiver. The communication capability links the terminal to a POS system, such as a PC-based cash register, in a retail establishment so that a customer can use a card to pay for goods or services provided in the establishment. The POS system typically processes the payment by communication with the terminal and with a payment processor. 
     A terminal provided with a wireless communication capability, and made sufficiently small and ergonomic to be handheld, can be carried by an employee of the retail establishment so that payments can be made at a location convenient for the customer. Such a portable terminal may be sized and shaped to fit in a waist-carried holster or to be hand-carried by the employee. The terminal may have an upper surface where the keypad, display, and reprogrammable keys are located. These keys and display can be more ergonomic in terms of ease of use and viewing, while maintaining a sufficiently small size and shape for portability, if other features of the terminal, such as the printer, use a lower, side, or rear surface, rather than the upper surface. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  is an isometric view of a terminal in accordance with an embodiment of the invention, with an external compartment shown as partially transparent and internal paper roller and printing mechanism shown within the compartment and external display and keypad on an upper surface of the compartment. 
         FIG. 2  is a side view of the components of the terminal with the compartment removed, showing the display, keypad, and a paper roll. 
         FIG. 3  is an isometric view of the terminal of  FIG. 1  from an opposite angle showing a printer door on a lower surface of the compartment, a paper exit adjacent the door and a rear surface of the compartment, and a magnetic stripe reader on a right side of the compartment. 
     
    
    
     DETAILED DESCRIPTION 
     A POS terminal in accordance with an embodiment of the present disclosure is indicated generally at  10  in  FIGS. 1-3 . Terminal  10  may be provided with an 802.11g Wi-Fi wireless communication capability and additionally or alternatively may be provided with any suitable communication capability, such as a serial port, a parallel port, Ethernet, or others. Preferably the terminal provides WPA-level encryption and WPA-PSK (pre-shared keys) for Wi-Fi security and/or comparable security for other communication modes. 
     Terminal  10  may be sized and shaped to be handheld, permitting the terminal to be handed over to a customer of a retail establishment. Alternatively the terminal may be used on a countertop. Terminal  10  may include any type of card reader, such as a magnetic stripe reader  12 , and additionally or alternatively a smart card reader using electrical terminals or RF communication. A keypad  14  may also be used to enter card and/or PIN information. 
     Terminal  10  may be made with a rugged compartment  16  to handle a retail operating environment that may involve impacts from dropping or other rough handling of the terminal and spills or other sources of liquids. Magnetic stripe reader  12  may include a moisture seal or restriction to prevent liquids from getting inside the terminal, as described in a non-provisional application (which is incorporated herein by reference for all purposes) filed by the owner of this application on the same day as this application. 
     Compartment  16  defines an upper surface  18  extending roughly from a front side  20  to a rear surface  22 . A display  24  and keypad  14  are typically disposed on upper surface  18 . A right side  26  and a left side  28  extend from front side  20  to rear surface  22  on opposite sides of compartment  16 . A lower surface  30  is opposite the upper surface  18 , and compartment  16  defines a distance between the upper and lower surfaces. Lower surface  30  may be provided with a curved shape with a narrow middle section  32  to aid in holding terminal  10  by hand, in which case the distance between the upper and lower surfaces varies and a particular distance can be identified at any point between rear surface  22  and front side  20 . Preferably, the weight of the terminal is distributed in a manner for balanced holding of the terminal at or adjacent the middle section. 
     The terminal includes a microprocessor and other electronics for carrying out typical POS functions and for controlling the display and receiving input from the magnetic stripe reader. For example, a 32-bit ARM9 processor may be used. Preferably, the microprocessor is designed and programmed with a secure architecture to prevent loading and operation of any unauthorized programs. A battery is provided to power the electronics, for example, a lithium ion battery. 
     Display  24  may include one or more keys disposed around the display, which preferably are reprogrammable by the microprocessor to carry out any of various functions, and typically the display will indicate the function adjacent the reprogrammable key. Display  24  may also be a touch-screen panel with keys integrated into the display. Such keys may be programmed to provide an ATM-style user interface using keys that are either on the display or alongside it, or both. Preferably display  24  is a high-contrast, white backlit display, preferably including a large viewing area, e.g., at least about 128×128 pixels. 
     Upper surface  18  defines a length USL from front side  20  to rear surface  22  in a direction parallel to the left and right sides. Typically upper surface length USL is about 160 mm, but may be greater or lesser depending on various factors including the target application for the terminal. Display  24  and keypad  14  define a user interface length UIL parallel to the right and left sides from the front-most portion of the keypad to the rearmost portion of the display. Preferably user interface length UIL is about 130 mm, but may be greater or lesser. Preferably, the ratio of user interface length UIL to upper surface length USL is at least about 75% and more preferably is at least about 82%. 
     Terminal  10  may include within compartment  16  a printer  34  that includes a printing mechanism  36 , e.g., a high-speed thermal print head, and a paper roller for mounting a paper roll  38 . A printer door  40  is preferably provided in lower surface  30  to allow drop-in, clam-shell loading of paper roll  38 . Preferably the terminal can accommodate a paper roll of at least about 40 mm diameter, although other sizes may be used depending on the application. As will be understood, the paper roll defines an initial diameter, e.g., the aforementioned 40 mm, before the paper is used for printing, and the size of the paper roll diminishes as the paper is used for printing receipts. Terminal  10  preferably includes a rear paper exit  42  that may be located at a rear end  44  of printer door  40  adjacent rear surface  22 . Paper exit  42  is preferably provided with a dual-tear bar so a printed receipt that has exited the terminal can be torn off either upwardly or downwardly. 
     As shown in  FIGS. 1 and 2 , paper roll  38  and printing mechanism  36  are preferably disposed beneath display  24 . Printing mechanism  36  preferably is disposed in a rearward location in the compartment. Printing mechanism  36  is preferably closer than the paper roll to the rear surface. Paper roll  38  and printing mechanism  36  are preferably disposed alongside one another at roughly equivalent positions relative to the upper and lower surfaces, as opposed to being stacked, one on top of the other. Display  24 , as shown in  FIGS. 1 and 2 , may be mounted over paper roll  38 , in which case display  24  defines a distance from upper surface  8  down to the roll of paper. In this embodiment, compartment  16  defines a distance between upper surface  18  and lower surface  30 , at the center of paper roll  38 , that is substantially equal to the depth of display  24  plus the initial diameter of the roll of paper. Such distance between upper surface  18  and lower surface  30  at the center of paper roll  38  may be, as shown in  FIGS. 1 and 2 , a maximum distance for the compartment between the upper and lower surfaces as compared to any other point. 
     Terminal  10  may be provided with a base station (not shown) that includes a charger for recharging the battery in the terminal. The base station may also include a spare battery for installation in the terminal in case the original battery fails. Terminal  10  may also include one or more USB ports and dial-up modem modules for uploading and downloading programs and information from the terminal. 
     This disclosure may include one or more independent or interdependent inventions directed to various combinations of features, functions, elements and/or properties. While examples of apparatus and methods are particularly shown and described, many variations may be made therein. Various combinations and sub-combinations of features, functions, elements and/or properties may be claimed in one or more related applications. Such variations, whether they are directed to different combinations or directed to the same combinations, whether different, broader, narrower or equal in scope, are regarded as included within the subject matter of the present disclosure. 
     The described examples are illustrative and directed to specific examples of apparatus and/or methods rather than a specific invention, and no single feature or element, or combination thereof, is essential to all possible combinations. Thus, any one of various inventions that may be claimed based on the disclosed example or examples does not necessarily encompass all or any particular features, characteristics or combinations, unless subsequently specifically claimed. Where “a” or “a first” element or the equivalent thereof is recited, such usage includes one or more such elements, neither requiring nor excluding two or more such elements. Further, ordinal indicators, such as first, second or third, for identified elements are used to distinguish between the elements, and do not indicate a required or limited number of such elements, and do not indicate a particular position or order of such elements unless otherwise specifically indicated.