Method and apparatus for individualized selection of special fee postage value computations

Abstract: A method and apparatus are described for controlling access of a user of a postal value computing system to the computation of special fees. A directory memory stores a special fee control byte which is combined with a rate fee screen byte that is generated by the system to represent the special fee computations requested in response to actua­ tions of the keyboard. The combining of the bytes employs a bit for bit AND operation with the result stored as a modified rate screen byte for use in the subsequent special fee computations. Access may then be granted or denied, depending upon the special fee control byte.

Description: This invention relates to postage value computation systems generally and more specifically to a method and apparatus for enabling a user of such system to choose his access to automatic computation of special postage fees. Postage value computation systems have been described in the art. Such system, in response to information of the weight of the article to be mailed and its destination, determines the amount of postage to be applied. The required postage is a function of many variables such as, for example, different classes, whether for United States Postal Service (USPS) or United Parcel Service (UPS) or international service, etc. In addition, special fees may be selected and additional required postage for that must be computed. Such special fees may be for registered mail, special delivery, return receipt, certified, insurance, or cash on delivery. In the U.S. Patent 4,286,325 to D. F. Dlugos et al, a postal value computing system is described capable of handling a wide range of postage variables. Such system organizes the postal values in rate charts occupying areas in a memory. The system employs a digital processor, keyboard and physically replaceable memories (also known as PROMS for programmable read-only memories) such as a rate memory in which the rate charts are stored and a directory memory which stores vectors to direct a program in the processor to rate charts to which access is requested by actuations of the keyboard. In U.S. Patent No. 4,325,440 to R.R. Crowley, E.P. Daniels and B. Holtz and entitled "Method and System for Computing Special Fees in a Parcel Postage Metering System", a technique is described to compute special postal fees. U.S. Patent No. 4,320,461 supplements the disclosure of U.S. Patent No.4,286,325 and discloses individually replaceable rate and directory memories. In the Applicants' European Patent Application (EP-A) No. 99666, a technique is described to enable a user to individualize his postage value computation system whereby only those postal rate values can be computed for which the user has a need. In such system, which employs replaceable directory and rate PROMS, the directory PROM is tailored to fit the needs of the user while the rate PROM is only updated, when the rates and fees selected by the user so require. The latter system achieves such individualized tailoring by controlling data memories and without program modifications. According to the invention, there is provided an apparatus for the computation of a postage value, comprising: a system in which a processor operated by a program is used with independently physically replaceable rate and directory memories wherein said rate memory includes rate chart data used to compute postage values for articles to be mailed in various modes and under special conditions in response to actuations of a keyboard, said directory memory stores vectors for directing said program in said processor to rate charts and special fee computations to which access is requested by actuations of said keyboard, and said rate memory also includes a special fee rate screen byte containing bits which control access to said special fee computations, characterized in that said directory memory incorporates at a predetermined location a special fee control byte containing bits which control access to said special fee computations, and said system further comprises means for combining said special fee rate screen byte with said special fee control byte to form a modified rate fee screen byte which controls access to said special fee computations. In a preferred embodiment of the invention, said special fee rate screen byte comprises a predetermined number of hits which control access to respective ones of said special fee computations, and said special fee control byte comprises the same number of bits as said special fee rate screen byte with said bits of said special fee control byte controlling access to respective ones of said special fee computations. With a postal value computing method and apparatus as particularly disclosed and illustrated herein, a user may choose to include or exclude access to special fee postal computations. This is achieved in one embodiment by modifying a special fee rate screen employed in the technique described in the aforementioned U.S. Patent (US-A) No. 4 286 325. The screen serves to determine which special fee is to be computed for a particular postal rate structure requested by the actuation of the keyboard. An advantage of the invention is that the replacement of rate memories because of postal rate changes can be limited to those to which the user has access. The values of the bits in the special fee control byte are selected to determine whether access to a special fee computation is to be granted. A special fee control technique in accordance with the invention is particularly useful with existing postage value computing systems as described in the aforementioned Dlugos et al patent. A special fee control can be added to such system with few program modifications. It is, therefore, an aim of the invention to provide a method and apparatus whereby a user of a postage value computing system may choose whether his system should compute special fees. It is a further aim of the invention to provide control over access to the computation of special fees in postage value computing system in a convenient and simple manner. The invention can be understood from the following detailed description of an embodiment in conjunction with the drawing. Fig. 1 is a schematic representation of a memory segment and program steps in a postal value computing system for establishing control over the access of the computation of special fees. In the Figure a technique 2 is shown for establishing access control over the computation of special fees with a postage value computing system, not shown, but as shown and described in the U.S. Patent Nos. 4,286,325 to D. F. Dlugos et al and 4,325,440 to R. R. Crowley et al. Such system incorporates a microprocessor 4 with memories and a program to calculate postage values for a wide variety of mailing methods as are generally encountered and as more particularly described in the patent. The postage value computing system organizes postage values in rate charts, not shown here, in a physically replaceable rate memory 6. Computation of a postal, value is commenced with the actuation of a key 8 in a keyboard 10, thus causing a transfer of the program in the processor to a directory memory 12. The latter memory is also a physically, replaceable memory and is preferably tailored to fit the needs of a user in the manner as described in the aforementioned Dlugos et al patent application. A visual display 13 is included in the system and operated by the program processor 4. The computation of special fees involves a program, only a part 14 being shown in Fig.1, and which employs at 16 those program steps used to compute a rate for a class in the manner described in U.S. Patent 4,286,325. The computed rates are displayed at 18 and at 20 a byte related to the class for which postage was computed, is read from the rate memory and temporarily stored in a random access memory location. The class byte serves to determine the type of class that is being computed. This information is needed during the special fee computation since for certain classes certain special fees either are not available or may be mutually exclusive. For example, if the class byte represents third class, then the article for which postage is to be computed cannot be mailed registered. At 22 a special rate fee screen 23 is read and temporarily stored. Special rate fee screen byte 23 is, as described in the aforementioned special fee computing patent 4,235,440, an eight bit word as shown at 23. The bits in the word 23 represent particular special functions that are permissible with the selected class. Thus, for example, bit 24.1, if an active one, indicates that Return Receipt is proper. Bit 24.2 represents registered mail, bit 24.3 certified mail, with the sequential bits, respectively representing special delivery, insurance, special handling and C.0.D. (cash on delivery). The last bit 24.8 is a spare bit which may be employed to indicate to the program that no special fee computation is to be made for that particular specific fee. There are as many special rate fee screen bytes 23 as there are mailing classes that require such screen to enable the computation of permisible special fees. At 26 the program reads a special fee control byte 28 at location 30 in directory memory 12 and stores the control byte in a suitable random access memory location. The control byte 28 is provided with as many bits as there are special fee bits in word 23. At 36 the program 14 combines the rate fee screen 23 with the special fee control 28. This combining step in practice ANDs the corresponding bits. Thus, bit 24.1 is ANDed with bit 32.1 and so on for all bits. The result is a modified eight bit rate fee screen 38. The AND type of combination of the respective bits 24 and 32 in rate fee screen 23 and control word 28 results in that all special fee requests are cancelled to zero unless a one is present in both bits that are being ANDed. Thus, bit 40.4 in the new rate fee screen 38 is an active one since both bits 24.4 and 32.4 were active ones. On the other hand, bit 40.5 is a deactive zero since bit 32.5 was inactive. The AND combining of bits is a well known logic process. The modified rate fee screen 38 is then stored at 42 as the new rate fee screen in the same temporary memory location in which the old rate fee screen 23 was stored at step 22. At 44 a routine for computing the special fee is begun based upon the new rate fee screen 38. The special fee computation is done in the manner as described in the aforementioned patent application for computing special fees. In the special fee computations 44, comparisons are made between the appropriate bit in the modified rate fee screen and the original rate fee screen. If the two screens are not the same, the special fee computation for which the comparison was made is cancelled and a return of the program is made. Hence, by controlling the contents of the rate fee screen with the control byte 28, access to individual special functions may be selected by a user. As a result, the replacement of rate memories 6 because of postal rate changes can be limited to those to which the user has access. Having thus explained an embodiment for granting or denying access to special fee computations in accordance with the invention, its advantages can be appreciated. Variations may be employed without departing from the scope of the claims. For example, in the embodiment a single control byte 28 is employed to determine which special fee is to be computed. The selected special fee is then available for all classes. However, one could employ a number of control bytes 28 for respectively different mailing classes.

Claims: An apparatus for the computation of a postage value, comprising: a system in which a processor (4) operated by a program (14) is used with independently physically replaceable rate and directory memories (6,12) wherein said rate memory (6) includes rate chart data used to compute postage values for articles to be mailed in various modes and under special conditions in response to actuations of a keyboard (10), said directory memory (12) stores vectors for directing said program in said processor to rate charts and special fee computations to which access is requested by actuations of said keyboard, and said rate memory (6) also includes a special fee rate screen byte (23) containing hits (24.1-24.8) which control access to said special fee computations, characterized in that said directory memory (12) incorporates at a predetermined location (30) a special fee control byte (28) containing bits (32.1-32.8) which control access to said special fee computations, and said system further comprises means (36) for combining said special fee rate screen byte (23) with said special fee control byte (28) to form a modified rate fee screen byte (38) which controls access to said special fee computations. An apparatus as claimed in claim 1 wherein said special fee rate screen byte (23) comprises a predetermined number of bits (24.1-24.8) which control access to respective ones of said special fee computations, and said special fee control byte (28) comprises the same number of bits (32.1-32.8) as said special fee rate screen byte (23) with said bits (32.1-32.8) of said special fee control byte (28) controlling access to respective ones of said special fee computations. An apparatus as claimed in claim 2 wherein said combining means (36) is arranged to logically AND said bits of said special fee rate screen byte (23) with the corresponding ones of said bits of said special fee control byte (28) to form said modified rate fee screen byte (38). A method for controlling access to the computation of special fees with a postage value computing system having a program operated processor (4), a physically replaceable rate memory (6) storing postage rate information, and a directory memory (12) storing vectors for directing the program in the processor to rate charts and special fee computations to which access is requested by actuations of a keyboard, the directory memory (12) being physically replaceable independently of the rate memory (6), the method comprising the steps of: storing in the rate memory (6) a special fee rate screen byte (23) which controls access to the special fee computations; reading at a location (30) in the directory memory (12) a special fee control byte (28) which controls access to the special fee computations; combining the special fee rate screen byte (23) with the special fee control byte (28) to form a modified rate fee screen byte (38); and computing special fees in accordance with the modified rate fee screen byte (38). A method as claimed in claim 4 wherein the combining step includes the step of: forming a logical AND between corresponding bits (24.1-24.8, 32.1-32.8) in the special fee rate screen byte (23) and special fee control byte (28) wherein the bits that correspond relate to the same special fee, and storing the result of the logical AND step as a bit (40.1-40.8) in the modified rate fee screen byte (38).

Inventors: DANIELS EDWARD P, DLUGOS DANIEL F, DANIELS, EDWARD P., DLUGOS, DANIEL F.
Applicants: PITNEY BOWES INC, PITNEY BOWES, INC.
Application year: 1983
Main classification: G07B17
IPC codes: G07B17, G07C9