Integrated portable device for point of sale transactions

FIG. 4 is a bottom perspective view of the exemplary device shown in FIG. 1, depicting a receipt caddy in exploded view format.

FIG. 5 is a perspective view of an exemplary paper holder assembly. 5

FIG. 6 is a block diagram of the functional components of the exemplary device shown in FIG. 1 and a device for obtaining credit card transaction approval including a transceiver for communication with the device of the present invention. 10

PREFERRED EMBODIMENT FOR CARRYING
OUT THE INVENTION

FIG. 1 presents in perspective an exemplary portable device in accordance with the present invention, gener- 15 ally indicated by the numeral 10, that within a single housing 20 integrally furnishes all functions necessary to complete a credit card transaction as a POS terminal and facilitate handheld operation. Device 10, best seen overall in FIGS. 1 and 2, the latter of which presents 20 vertical sectional view of device 10 taken substantially along line 2—2 shown in of FIG. 1, may be made of several separate components furnishing various functions: magnetic card reader 40, first data entry keyboard 50, second data entry keyboard 60, barcode scanner 70, 25 display 80, printer assembly 90, communications assembly 110 and processor assembly 130. Housing 20 may be formed by molding or other acceptable means of a suitable material such as a rigid plastic suitable to integrally carry all the components in a substantially rectangular 30 block having a top surface 21, a bottom surface 22, a first end 23 and a second end 24. For reasons which will become more apparent hereinafter, a portion of the top surface 21 of housing 20 is sloped or titled upward moving from the first end 23 to the second end 24, as shown 35 at 25. The width of housing 20 should be about what may be comfortably grasped in a human operator's hand, less than about four inches (10.16 cm).

Magnetic card reader 40 may be any conventional reader suitable for reading credit card information en- 40 coded on a magnetic credit card 41 (FIG. 6) and carried and mounted by means not relevant hereto within housing 20 substantially adjacent to the first end 23 of housing 20 so as to allow an operator, whether a salesperson or customer, to wipe the magnetic stripe of the card 45 across the exposed reading head 42 of magnetic card reader 40, as further discussed below. Of course, where credit card 41 employs a different information encoding method, such as optical or electrical, card reader 40 may be appropriately selected to respond to such other 50 encoding method. A substantially planer card guide 43 for directing credit card 41 and its magnetic stripe into operative engagement with reading head 42 may be furnished and connected to housing 11 as with flat head screws 44. 55

First data entry keyboard 50 may be a conventional data entry mechanism, such as a keyboard with raised, travel-tactile keys, suitable for entry of customer information and, optionally, device commands. Keyboard 50 is carried and mounted by means not relevant hereto 60 within housing 20 substantially adjacent to the first end 23 of housing 20 so as to allow the operator to make entries at the top surface 21 of housing 20, and is preferably relatively thin to preserve as much space as possible within housing 20. 65

Second data entry keyboard 60 also may be a conventional data entry mechanism, but where customer receipts are to be signed by the customer atop keyboard

60, is a substantially flat preferably membrane keyboard having a mylar, customizable, user-interchangeable keypad cover. Keyboard 60 may be suitable for entry of additional customer or other information, and is carried and mounted, again by means not relevant hereto, within housing 20 substantially adjacent to keyboard 50 so as to allow the operator to make entries at the top surface 21 of housing 20. A second keyboard is not essential to the successful operation of device 10 as explained hereinafter; however, a second keyboard may be advantageously utilized for primarily alphabetic and preselectable command function input while the first keyboard may be employed for primarily numeric and limited query response.

Barcode scanner 70 may be a compact mechanism for facilitating acquiring information about the item(s) the customer wishes to purchase, such as the CCD scanning module manufactured by Opticon Inc. of Orangeburg, N.Y., or a diode laser scanning module such as that available through Photographic Sciences Corp of Webster, N.Y. Optically scannable barcodes, now almost always placed on retail and inventory product, provides a unique product identification. As shown diagrammatically in FIG. 6, barcode scanner 70 generates a light scanning beam 71 for striking the barcode 72 applied to a product 73 to be purchased, its label or packaging. Barcode scanner 70 is carried within housing 20 by suitable means (not shown or relevant herein) such that the light scanning beam 71 is projected outwardly and upwardly from the upwardly inclined second end 24 of housing 20 through a light transparent window 74 (best seen in FIGS. 2 and 3). This orientation of light scanning beam 71 greatly enhances the ease with which the operator of device 10 may quickly and automatically identify all products to be purchased, as will be further explained hereinbelow.

Display 80 may be any conventional low-power consumption display such as a liquid crystal display for visual depiction of operating mode status, operator prompts, or any information acquired during the POS transaction. Display 80 may be carried and mounted by means not relevant hereto within housing 20 so that its display is viewable through a window 81 in the upward sloping portion 25 of top surface 21.

Printer assembly 90 may include any conventional receipt printer 91 able to print a narrow customer receipt in duplicate original, one copy of which is retained by the operator and the other given to the customer, a paper exit cover 92 and a printer paper holder 93. One suitable compact impact receipt printer 91 capable of printing 24 characters per line on 2.26 inch (5.74 cm) wide two-ply paper is dot matrix printer Model M-180 Ultra Small-Sized Printer available from Epson America Inc. of Torrance, Calif. Receipt printer 91 is carried within and mounted by means not relevant hereto to housing 20 such that paper exiting receipt printer 91 passes directly to paper exit cover 92 described further hereinafter. The width of receipt printer 91 may require housing 20 to include slight side protuberances 98 for accommodation, as shown in FIGS. 1 and 4.

Paper exit cover 92, best shown in FIGS. 1 and 2, is mounted in the top surface 21 of housing 20 between the inclined portion 25 and keyboard 60, and includes two parallel flanges 94 forming a guide channel 95 for directing the printer paper 96 out of device 10, and a serrated cutting edge 97. Printer paper holder 93, best depicted in FIGS. 2 and 5, includes a plate 100 contoured to removably, matingly engage the lower portion of the second end 24 of housing 20 and a portion of the bottom surface 22 of housing 20 nearby the second end 24, posts 101 to carry a roll of printer paper 96, and an angled paper guide 102 for optimally directing printer paper 96 into paper receipt printer 91. A plural- 5 ity of interchangeable plates 100 may be formed with sufficient curvature to receive rolls of printer paper 96 of different diameter, as may be desired by the operator and as shown in phantom in FIG. 2. An interlock 103 may be integrally formed in plate 100 to allow the requi- 10 site removable, mating engagement with housing 20. The side edges of paper guide 102 may be made slightly wider than that of printer paper 96 sufficient to fold over and furnish paper edge guides 104 for more readily directing printer paper 96 into the printhead of receipt 15 printer 91.

Prior to initial operation, and anytime the supply of receipt paper 91 is substantially depleted, the operator may install or replenish the supply by applying slight pressure on plate 100 under interlock 103 and removing 20 the printer paper holder from its operational position. A new roll of printer paper 96 is placed between posts 101, and the free end of printer paper 96 inserted through paper guide 102. Thereafter plate 100 is reinserted into housing 20, placing the free end of printer paper 96 into 25 receipt printer 91, and a preselected keyboard button actuating the paper feed by receipt printer 91 depressed until printer paper 96 extends through guide channel 95 and out past serrated cutting edge 97. Device 10 is then ready to print customer receipts. 30

Processor 130 may include any conventional central processing unit (CPU) 131, microprocessor or microcomputer having sufficient capacity to control operation of device 10, memory 132 to retain the control program and an input/output circuit 133 for receiving 35 and conditioning all control and data signals.

Communications assembly 110 allows device 10 to obtain approval of credit card transactions, and may include, alternatively or in combination, the components necessary to effect several different methods of 40 obtaining such approval. For example, device 10 may include a conventional radio frequency transceiver 111, preferably employing spread spectrum modulation, to send the information necessary for approval to a base station 112 including a like transceiver 113, central pro- 45 cessing unit 114, memory 115 and input/output circuit 116 connected to a telephone line. Base station 112 will call the credit card verification telephone number, forward the necessary information, and receive and radio back to device 10 approval or disapproval. If desired 50 additional memory 117 may be included within communications assembly 110 to store the information necessary for approval and transmit all such information in one or more larger data batches, instead of transmitting each piece of information as it is read, scanned or en- 55 tered in device 10. Data jacks suitable for direct serial data transmission may be provided in both device 10 and base station 112, and device 10 and base station 112 plugged together to effect transfer. A modem 118 and telephone jack may be installed within device 10, and 60 device 10 plugged directly into the public telephone network to obtain transaction approval. Communications assembly 110 may be carried within and mounted by means not relevant hereto to housing 20 substantially adjacent to magnetic card reader 40 underneath key- 65 board 50.

Device 10 may include a caddy 140 to facilitate signature of the customer receipt and temporarily store the

operator's copy of the signed receipt. One suitable caddy 140 is illustrated in partial exploded form in FIG. 4 where a five-sided, substantially planer tray only slightly narrower than the width of device 10 is seen to include four corner hooks 141 for removable, sliding engagement with the bottom surface 22 of housing 20, thereby providing a receipt storage chamber 142. The height of caddy 140 may be selected by the manufacturer, and holders having a variety of heights may be made available, but a shallow depth of about 3/16 inch (0.48 cm) is believed to provide adequate storage capacity for many applications. An aperture 143 through which signed customer receipts may be inserted into holder 141 may be formed at the end closest to the first end 23 of housing 20, and a receipt holding recessed flange 144 integrally formed into the end of caddy 140 closest to the second end 24 of housing 20 with a very small clearance above the preferably recessed top surface of caddy 140. When a customer receipt is printed and ready for signature, the operator of device 10 may turn it over, slip a narrow end of the customer receipt under recessed flange 144, securing the receipt by interference fit and providing a hard, flat surface for signature by the customer. A raised flange (not shown) also may be integrally formed into housing 20 extending from top surface 21 between the keyboard 50 and keyboard 60 such that the customer receipt is positioned over the flat keyboard 60 for signature, and keyboard 60 selectively, temporarily deactivated during such signature.

FIG. 4 also presents two mechanisms for carrying of device 10 by the operator. The first mechanism is a somewhat s-shaped, flexible clothing (including belt) hook 146 that may be integrally formed with the card guide 43 so that it extends out from the center thereof along the bottom surface 22 of housing 20. The second mechanism is an adjustable neck strap 147 the ends of which are secured to the opposite ends of a closure bar 148, which is in turn slid under clothing hook 146. Closure bar 148 may be made to extend beyond the width of device 10 to facilitate separation of closure bar 148 from device 10. Carry device 10 with such mechanisms allows device 10 to be hung from the operator's clothing in a vertical orientation with the first end 23 closest to the operator's head and the second end 24 furthest therefrom whether device 10 is suspended from the operator's clothing or from the neck strap positioned around the operator's neck. In such a position the operator will have both hands free for other operations and device 10 will be stabilized by the front of the operator's body.

A self-contained energy source such as batteries 149 are carried within and mounted by means not relevant hereto to housing 20 between communications assembly 110 and receipt printer 91 underneath keyboard 60.

Operation of device 10 is straightforward. For purposes of explanation it shall be assumed that a supply of printer paper 96 is installed within device 10, device 10 is transmitting necessary information to base station 112 for transaction approval, and a customer has approached the operator with several products to be purchased in a credit card transaction, all as discussed above.

First, allowing device 10 to hang vertically free from the operator's clothing or neck, the operator may use both hands to guide the products to be purchased so that barcodes thereon pass beneath barcode scanner 70. The angular orientation of the upward sloping portion