GB2173741A

GB2173741A - Unsecured postage applying system

Info

Publication number: GB2173741A
Application number: GB08609029A
Authority: GB
Inventors: George B Edelmann; Arno Muller; Ronald P Sansone; Michael P Taylor
Original assignee: Pitney Bowes Inc
Current assignee: Pitney Bowes Inc
Priority date: 1985-04-17
Filing date: 1986-04-14
Publication date: 1986-10-22
Also published as: AU5634586A; GB2173741B; IT8647902A0; IT1221060B; AU584187B2; FR2580843A1; DE3613025C2; CH672378A5; FR2580843B1; DE3613025A1; BR8601838A; GB8609029D0

Abstract

An unsecured postage applying system wherein the printer 30 and metering unit 14 are separated from one another by an unsecured link. The printer may be of any "off-the-shelf" type that is capable of printing alpha numerics or bar codes. More than one printer can be connected to a single metering unit to provide a network of printers accommodated by the one metering unit, Figure 3. The secure metering unit 14 encloses accounting and encryption modules 24,22; an encryption message is generated in the metering unit, and is transmitted for printing on the mail piece together with the postage value, Figure 2, for subsequent verification in the postal sorting system. The printer 30 is limited to metering unit 14 through user computer 28, or forms part of a word-processor, Figure 3. <IMAGE>

Description

SPECIFICATION Unsecured postage applying system and method Since the issuance of US Patent No 1 530 852 to Arthur H. Pitney, March 24, 1925, the postage me ter has hada stead evolution. Throughout the years, two general types of postage meters have been used: one that uses a rotary type printer, known as a rotary postage meter, and the other that uses a stationary print head and a reciprocat ing platen, known as a flat bed postage meter.

Most recently, there has been a change from com pletely mechanical devices to meters that incorpo rate extensive use of electronic components.

Although there have been a number of changes, there are certain elements that remain constant.

One of the constants has been that each meter had a printer included therein on a one-to-one ba sis, i.e. one metering device and one printing de- vice incorporated into a unit. In postage meters, the need for security is absolute. Such security is applied in prior postage meters both to the print ing portion of the meter and to the accounting portinn. The reason for the need of absolute security is because a postage meter is printing value, and unless security measures are taken, one would be able to print unauthorized postage, i.e. postage for which no payment is made, thereby defrauding the Postal Authorities. Most security measures taken are of a physical nature, but recently there have been suggestions for the use of encryption to as sure that a postage indicia is valid.Nevertheless, such encryption has merely supplemented the physical security systems that have been used and suggested by the prior art.

Although postage meters have performed satis factorily in the past, and continue to perform satis factorily, with the advancements in electronics and communications it is becoming apparent that ways of applying postage and accounting for the same can be achieved in systems that are less expensive to fabricate and more flexible in use while still pro viding the serviceability and security required.

Summary of the invention An unsecured postage applying system has been devised wherein an off the shelf printer or a plural ity of such printers may be used to print the re quired postage and may be controlled through an unsecured link. This printer would be connected to a computer or a combination of computer and printer, such as a word processor, may be used.

The computer or word processor would be in com munication with a secure metering unit that would include accounting and encryption modules. This secure metering unit, in turn, would be communi cable with a control center, either directly or through a user computer, which would be capable of inputting postage to the metering unit. With such a device, a relatively inexpensive printer with great flexibility may be used. Encryption is utilized to prevent the printing of unauthorised postage.

This combination of flexible printing and ecryption would allow an inexpensive way of processing mail. A further advantage is that a plurality of printers can be connected to and served by a single metering unit in network fashion.

The invention will be better understood from the following non-limiting description of examples thereof given with reference to the accompanying drawings in which: Figure l is a block diagram of a system that utilizes the invention; Figure 2 is a plan view of a mail piece prepared in accordance with the invention; and Figure 3 is a block diagram similar to Figure 1 but showing a system with a network of printers.

Referring initially to Figure 1, an unsecured postage applying system is shown generally at 10 and includes a control center 12 and a metering unit 14 that are in communication with one another through a communicating device such as a telephone 16, facsimile machine, telex machine, and the like.

Located within the metering unit 14 is a modem, port or converter 18 which interconnects the telephone 16 with a control module 20 of the metering unit, which control module may be a CPU such as in Intel 8085 microprocessor. The control module 20 has a memory 19 and a clock 21 either integral or in connection therewith. The memory 19 would include ROM,RAM operation instructions as well as the meter or customer number and other useful information. In communication with the control module 20 is an encryption module 22 as well as an accounting module 24. The encryption module 22 may be encrypted in accordance with the NBS Data Encryption Standard (DES). A suitable device for such purpose is the Intel 8294 encryptor. The accounting module 24 may be a RAM that incorporates the ascending and descending registers as well as the transaction number.As is known, an ascending register is a register that records the amount of postage that has been dispensed, or printed, in all transactions and the descending register is that which records the value, or amount of postage, remaining in the metering unit which.

value decreases as postage is applied. The transaction number is a unique number assigned by the control center 12 to the metering unit 14 at the time postage is charged or credited to the latter.

Another modem 26 within the metering unit 14 interconnects the control module 20 with a user computer 28. It will be appreciated that the metering unit may be at the same location as the user computer 28 or remote therefrom. The user computer may be any type of computer that has input, memory, arithmetic, logic and output, for example, a personal computer such as the IBM personal computer AT. Connected to the user computer 28 is a user printer 30. Although the user printer may be of any type that is capable of printing individual alpha numerics or bar code, a dot matrix printer is preferred. An example of a dot matrix printer would be a thermal printer or an ink jet printer. Although the combination of a user computer 28 and printer 30 is shown, it will be appreciated that a word processor 31 may be used as outlined in place of the two.

In the block diagram shown in Figure 1, the control center 12 is a source of postage value such as a Post Office. Systems are known whereby a postage meter may be charged remotely upon a customer number being provided to the Post Office.

The Post Office, in turn, will provide postage value that is automatically input to the customer's postage meter, or in this case the accounting unit 14, and charged to the customer's account An example of such a system is disclosed in U.S. Pat. No.

4,097,923. Although this preferred embodiment is described using remote resetting of the postage value, it will be appreciated that the metering unit may be recharged by physically taking the same to a post affice and paying for the amount of postage charged. In the system of Figure 1, a secure postage meter is replaced by the accounting unit 14 that is a secure unit such that tampering by physical, electronic or magnetic means is inhibited. Security features such as a shield, break away bolts and the like are well known and the means for physically securing the metering unit will not be described. The metering unit 14 would have no display and would only be accessible by the user computer 28 upon a selected code being received by the control module 20 from the user computer 28.The user printer 30 is not a secure printer nor are the links between the user computer 28 and the accounting unit 14 on the one hand and the user computer and the printer on the other. The postage to be printed by the user printer 30 would include an encryption number that is generated by the encryption module 22. Such encryption may be based upon any recognized code such as DES, supra, or Rivest, Shamir and Adieman cipher (RSA).

Upon the appropriate information being supplied to the metering unit 14 from the user computer, the encryption module 22 would generate an encryption number or encrypted message. This supplied information could include the customer number, the value of postage, address information and the like. The encrypted message is communicated to the user computer 28 for subsequent printing of the encrypted message.

In another preferred embodiment of the invention, the control center 12 communicates directly with the user computer 28 via the telephone 16.

This communication link is shown by the dash line in Figure 1. There are two primary advantages to having direct contact between the control center 12 and the user computer. The first advantage is one of cost. Because communication between the control center 12 and the user computer 28 is on the basis of computer to computer, the modem 18 is not required. More specifically, only one modem 26 would be needed in the metering unit 14 and all components and costs associated with the modem would be eliminated. The second advantage is that direct communication between the control center 12 and the user computer allows participation on the part of the user in funds transfer since the transaction would be displayed as being transacted on the CRT of the user computer 28 and the user could observe and communicate any comments back to the control center 12.

Referring now to Figure 2, a scheme is shown whereby postage would be applied to a mail piece such as an envelope 34. In this particular configuration, an envelope 34 is shown with a label 36 attached to the block address portion of the envelope. It will be appreciated that the instant invention would include printing postage directly upon the mail piece or upon the block address portion of an insert that would be viewable through a window type envelope. The first line 38 of the label would have information relative to the amount of postage and the customer number. The second line 40 contains the date of the mailing, the time the postage is imprinted and the class of mail.The third line 42 contains an encrypted combination of numbers and letters that may be derived from the information on the first two lines as well as information from the address of the recipient of the mail that follows this third line and information contained in the metering unit 14. For example, the first encrypted message B7C14 could reiate to the postage amount and date, the second group 45647 to zip code, the third group 66646 to the customer number and transaction number and the tast group 40028 to the class of mail. Following these three lines 38, 40 and 42 are the name and address of the mail piece recipient which is printed by the printer 28.

The postage amount, customer number, and zip code are transmitted by the user computer 28 to the control module 20. The memory 19 provides the transaction number and the clock 21 provides the time. The encrypting module 22 then generates an encrypted message and sends it to the user computer according to the system protoral. This encryption message line 42, is then printed by the user printer 30 on line 3 of the label 36 and the postage value is subtracted from the postage value stored in the accounting module 24. With this information, a Postal Service representative would be able to input the encrypted message into a suitable computer and decrypt in accordance with the selected cipher to determine whether the postage is genuine.More specifically, if one were to select characters at random for the third line 42 in order to send a mail piece through the mail without paying for the- postage, it would be detected since the decrypted message could not be obtained from the information on the face of the label 38. Consequently, an unsecure printer 30 may be used because an unauthorized person would not be able to place an appropriate encrypted message 42 on the mail piece 34.

Although the system has been shown using a plurality of lines, it will be appreciated that the encrypted information may be printed anywhere on the label 36 or envelope 34.

The advantage of the system shown and described in Figure 3 is the use of a single metering unit for a plurality of printing stations. The metering unit 14 could belong to an individual who purchases postage from the Post Office and then supplies services to a number of other individuals through communication links. In Figure 3 a network system is shown where like numbers are used to identify like parts as in Figure 1. The modem 26 within the accounting unit 14 acts as a gateway between the control module 20 and a plurality of user word processors 28-1, 28-2...28-n. The user word processor may be any type of word processor having computer capability such as a Dictaphone 6000 word processor. Although the word processors 28-1, 28,-2...28-n are shown as being connected in parallel, it will be appreciated that other types of connections may be used including serial, circular, star and the like.

Claims

1. An unsecured postage applying system comprising in combination: a metering unit including a control module, an encryption generating means connected to said control module and accounting means connected to said control module; a plurality of computers; means for providing communication between said metering unit and each of said computers; and at least one printer operatively connected to each of said computers.

2. An unsecured postage applying system comprising: a control center; a metering unit including a control module, an encryption generating means connected to said control module and accounting means connected to said control module; a computer; means for providing unsecured communication between said control center and said computer; means for providing communication between said computer and said metering unit; and a printer in communication with said computer.

3. A system according to claim 2 in which the said means for providing communication between said computer and said metering unit is a means for providing unsecured communication between said control module and said computer.

4. A system according to claim 2 in wich there are a plurality of computer and means for providing communication between said metering unit and each of said computers; there being at least one printer operatively connected to each of said computers.

5. A system according to claim 4 in which the said means for providing communication between each of said computers and said metering unit is unsecured.

6. A system according to claim 4 in which at least some of the said plurality of computers are constituted by word processors, and means are included for providing communication between each of said word processors and said metering unit.

7. A method of applying postage to a mail piece with an unsecure printer, comprising: transmitting postage value to a metering unit; storing the postage value within the metering unit; selecting an amount of postage to be printed; communicating the amount of postage to the metering unit; generating an ecrypted message within the metering unit; communicating the encrypted message; printing the encrypted message and postage onto a mail piece; and subtracting the amount of postage applied from the postage value in the metering unit.

8. The method of claim 7 including the step of including postage information in the generating of the encrypted message.

9. The method of claim 8 including the step of communicating with a plurality of printers and selecting ones of the printers to apply the encrypted message and postage onto a mail piece.

10. A method of applying postage to a mail piece with an unsecure printer, comprising: storing postage value within a metering unit; selecting an amount of postage to be printed; communicating the amount of postage to the metering unit; generating an ecrypted message within the metering unit; communicating the encrypted message and the amount of postage to be printed to one of a plurality of printers; printing the encrypted message and postage onto a mail piece using the one printer; and subtracting the amount of postage applied from the postage value in the metering unit.

11. The method of claim 10 including the step of including postage information in the generating of the encrypted message.

12. An unsecured postage applying system substantially as herein described with reference to and as illustrated in the accompanying drawings.

13. Any novel combination or sub-combination disclosed and/or illustrated herein.