EP0902400B1 - Method for checking security imprints - Google Patents

Description

The invention relates to a method for testing Security imprints, in the preamble of Claim 1 specified type. The method comprises Steps to capture the serial number, postal value, the graphical symbols and their input via a Input device, as well as the start of an automatic Evaluation and signaling of the comparison result. The on a mail piece printed graphic symbols can with a suitable reader can be entered automatically.

A postage meter usually generates a print in a form agreed with the post office, right-justified, Starting parallel to the top edge of the mail with the content postal value in the postmark, date in Daily stamps and stamps for advertising clichés and if necessary, shipment type in the optional cancellation stamp. The postal value, the Date and the type of shipment form the according to the mail piece to be entered variable Information.

The postage value is the one from the sender prepaid transport fee (Franko), the one taken from the refillable credit register and the Freeing the mail item is used.

The date is a current date or around a future date in a postmark. While the current date of a clock / date module automatically provided, must be in a manual Pre-dating a setting of the desired future date. Interesting is the pre-dating in all cases where the advent of Mail processed very early and franked, but too must be sent on a specific date. The embedding the variable data for the date in the Daily cancellation can basically as well as the impression of the postage value.

The approved advertising clichés can embody messages of various kinds Art include, in particular the Address, the company logo, the PO Box and / or one any other message. When advertising cliché acts it is an additional one in the postal sense Indication to be agreed with the postal authority.

It is well known that an advertising message on a fixed printing block is applied, the User can be replaced. Such a machine delivers a distinctive fingerprint. It would be futile the impression with a modern color copier too copy, because even if the postage and in addition The serial number is forged by the unmistakable Fingerprint to identify that machine which is imitated in the fake intention. To a solution described in DE 38 40 041 the not constantly changing imprints of the Clichés applied to a printing drum and the variable parts of the cliché (characteristics) on electronic Paths generated and via a thermal printer printed. The characteristics are purely mechanical one assigned to specific place in the cliché.

As you know, the difficulty of advertising messages without a reduction in fee security to effect purely mechanically by replacing individual parts of a text carrying line castings be solved. But that is too time consuming and would lead to a print interruption. on the other hand would be such a change in fully electronic impact-less printing processes much faster possible.

From DE 37 12 100 is already a postage meter message printing system known, the to be printed Signs, a postage value and a telegraphic Embrace message. The electric postage meter is with a postage meter accounting circuit, which delivers the postage fee value, with one Telephone or transmission connection, with a message input device, with a transmission control system, with a printer and with a memory equipped. The memory delivers the message, thus the characters to be printed become at least partially due to data stored in memory.

With the between the transfer port and the memory switched transmission control system can the Advertising clichés are selectively changed by the data center, when with the message input device a request the data center via the transfer port the review of the coded Requirement in the data center was positive and that of the Data center transmitted message in the franking machine has been checked. Also already became proposed to a third party the possibility of To give advertising on the own post, by the Space leased for the franking machine message becomes. The data center then becomes the message of a Transmitted to third parties. The data center must have the message the third of the franking machine and controlled also the use of the message in the Franking machine. But here are always measures necessary to make sure the connection is maintained that the message authorizes is and that the data is correct.

It is no without a check in the data center Change of message possible. Because of the memory directly related to the printer and the Print data for the message stores, the user can Do not check what print data is in memory right now are stored. Also, the use of so stored message from the user of the franking machine not be controlled arbitrarily.

To selectively change the in the memory Saved advertising message must either the pixel data completely new from one for the advertising message Central are transmitted, the number of Prints, or the ones to be printed Advertising message is made by hand via a keyboard entered a memory to successively the Postage value, date data and lines of text to print.

The disadvantage here is that when changing manually Input information the previous old input information is lost. Only on in the central office Saved advertising messages can then be used become. Another disadvantage is that the change is not can be done without interruption. The se-tenant is electronically and mechanically consuming. The usage on the one hand by printing drums or on the other hand by Dot matrix printers also leads to an undesirable Noise pollution.

The inner structure of the printing drum, the already adjusting wheels for the postal value and the date, would also be so complicated that already proposed was, in the cliché print drum a separate second printer to arrange. From US 3,869,986 known, a second printing the variable data To use inkjet printer.

From US 4 580 144 is an electronic franking known with two thermal pressure devices, with the first the solid printed image part (Posthoheitszeichen and picture frame) and with the second the variable printed image part (postage and date) in succession to be printed. By this division and separate Treatment of variable and constant data can be Printing speed can be increased. However, it is due the missing fingerprint hereby no security impression already given. Rather, one more would have additional marking to be printed with.

In a franking machine known from US Pat. No. 4,746,234 be fixed and variable information in Storage means (ROM, RAM) stored in order then, if a letter on the transport path before the print position a microswitch actuated by means of a Microprocessor read and a pressure control signal to build. Both are then electronically to one Printed image composed and can by thermal pressure medium on an envelope to be franked be printed out. To be included in many variable window print image data delays the Formation of the pressure control signal accordingly. The at consistent postal data maximum achievable Printing speed is particularly due to the the formation of the pressure control signal required time limited. It would have an additional material expense operated or reducing the printing speed be accepted if from the data one Crypt number should be calculated to make it a Mark for a safety impression to produce. In both cases would be for such a machine (high Price and / or too slow) ultimately a lack of To expect acceptance by customers.

From EP 294 397 is an automatic transmission system known with user (chip) cards. The user cards are with a microprocessor and a data output unit Mistake. The franking machine points a terminal for the user cards with value processing section, Programming means for card microprocessor and a processing section microprocessor for execution of a programmed handling procedure on, with a graph of the card memory through Terminal is loaded into the printer memory. The possibility a modification of the graphic is only in the whole, d. H. about reloading an externally changed one Postage stamps including postmark by means of user cards. Through new advertising clichés can here Safety in itself can not be increased. Such can be easily generated electronically. on the other hand would change a promotional cliché to a manipulation clues. To evaluate such things, but is through the postal authority is not yet planned here.

From DE 38 23 719, however, a security system for use with a character printing authorization device known. A calculator of the franking machine is a memory for the data to be loaded Graphic change and data associated with the associated date. When the user asks for a change of funds nachkaufen, is from the computer of the franking machine an external selection device via a connection device (Modem) accessed a selection of one too printing character pattern. It is intended that the printed character pattern for checking the security the authorization of the franking machine used becomes. Here is the whole imprinted one special print pattern of the Post Office evaluate, which only with a high Effort is possible.

For the franking machine imprint is on the other hand has already been proposed, or certain hidden cryptographic characters, bar code, with multiple printheads as visible or invisible marks to raise the mail to identify counterfeits to be able to.

US-A-4775246 describes a check method for security imprints on mail, in which encrypted information on the mail is decrypted and the obtained unencrypted information for verification is compared with the franked postal indicia.

Thus, in US 4,775,246 an alphanumeric Number, in US 4,649,266 a single alphammeric Number in a number additionally in the postmark with printed, wherein the comparison by the Postal officials of such numerals or numbers subjective Errors are not excluded. In US 4,934,846 (ALCATEL), however, is already a machine-readable Barcode in a separate box next to the postmark reprinted, but in a disadvantageous way the available impression area for the postmark and / or the advertising cliché.

Such a bar code by means of a separate Printer is known from US 4,660,221 and the US 4,829,568, wherein in the latter US Patent also a character with offset elements printed whose offset is the relevant safety information contains. The evaluation is done, for example in US 4 641 346 by such a sign read column by column and with stored characters is compared in columns to the safety information recover. The evaluation is accordingly complicated and only by means of expensive Equipment from the postal authority.

Since the representation of the bar or bar code relative requires a lot of space, is already one two-dimensional barcode has been proposed. however remains as a disadvantage that bar code only machine, i. not additionally manually verifiable are. A security system known from US 4,949,381 uses imprints in the form of bitmaps in one separate check box below the postage meter stamp print. Although the bitmaps are particularly dense are packed, is still required by the Size check box the stamp image in its height reduced by the height of the check box. In order to is too much of the required for an advertising cliché Lost area. The disadvantage is also the required high-resolution detection device, for Evaluation of the mark.

Another security system uses imprints in Shape of a diagram (US 5 075 862) within the Frankiermaschinenstempelabdrucks. When printing elements are missing, the dots are missing in the printed image, resulting in signaling an alleged forgery can. Such marks in diagram form within the Franking machine stamp imprint are therefore not so for sure. Even with a faultless impression is the machine evaluation difficult because always the whole Print image is to evaluate.

Furthermore, in DE 40 03 006 A1 a method for Identification of mail to enable identification have been proposed by franking machines, with a multi-digit crypto involving of the date, the machine parameters, the postal value and formed the advertising clichés and cached separately becomes. About the printer means adjusting Printer control becomes the crypto number when printing additionally inserted in the print pattern. Thus, can by means of the crypto a forgery or any imitation of the postage meter stamp by a non-billed Postal value imprint can be recognized. Also at a plurality of users of a single franking machine, the user can easily find out who manipulated the postage. however this is not a fully electronic generated print image for an impact-less printer.

Already for fuse - technical reasons is in the DE 40 34 292 for a fully electronically generated printed image been proposed, only a constant part of the franking picture in the franking machine and the other associated variable part of the Data center of the franking machine to send to the to assemble final print image.

For the print data compilation is here at each Franking a communication of a franking module contained terminal with a central station necessary. This will delay the pressure, giving this solution for a massive franking of large mail volumes also unsuitable. The fully electronic generated advertising cliché belongs in this solution but as well to the constant data of the franking picture, how the frame layout of the value stamp and the day stamp with Location and if necessary the zip code. The advertising cliché but can not partially in that franking machine be changed.

The above solutions are either to achieve a high printing speed too expensive or have multiple printers or are for one Time-optimized assembly of constant and variable data for forming a pressure control signal unsuitable for a single printer.

On the one hand, all previous solutions, in which can be edited, no fast uninterruptible Change of an ad copy text part, at a high printing speed of up to approx. 6000 letters per hour. On the other hand, each contains Embassy so far exclusively the previously with the Postal Authority agreed information or if available several messages are selected one single may, a choice of agreed information. each Deviation leads either to the identification of one Counterfeiting or reduced counterfeit security, if such a derogation is allowed.

It was therefore the task, the disadvantages of the state of Overcome technology to a method of testing To create security imprints, which by a Franking on postal goods were generated.

The task is with the characterizing features of Claim 1 solved.

This is based on a franking device, on the one hand a machine-readable as well as manually readable and decodable form of the label, which can be visibly applied to the mail piece or franking strips together with the franking imprint, and for the other hand, a solution for assembling constant and quickly editable editable data and for printing control for a column-wise printing of a franking impression image has been developed.
As an additional function, the alteration of the cliché should be provided via the actuators in the new franking machine, without the need for prior approval by a data center or the post office and without compromising the security of billing and without such being franked Mail is sorted out at the post office as a forgery. At the same time, however, the security against counterfeiting should also be increased.

Distinguishing the manipulated in counterfeiting intent from such unmanipulated, but an editable Clicheetextteil having, franking machine imprints should continue with the postal authority easily to be possible. In addition, a reference to the Machine that was imitated by the manipulator or the self-manipulated and pointing to the machine, by the user beyond the inspection date was continued, given and / or from the impression be determinable.

Based on the consideration with a microprocessor and to get by on a printing module of a franking machine, is suggested for the safety impression, at a fully electronically generated print image the variable Data of the mark in one or more windows within a fixed area by the postage meter print image to embed the given frame during printing. For the time critical generation of the marking data becomes at least one after completing all entries Combination number formed from predetermined sizes and this according to an encryption algorithm to a Encrypted crypto number, which then into one Mark is implemented. Here is at least one associated with the higher digits of the combination number Number is a monotone variable. This changes the marking with each pressure, what such a franked mailpiece makes unmistakable.

This marker is preferably in the form of a Barcodes and / or as a series of symbols in one Field of the postage meter image simultaneously with printed by the single printer module. By the symbolism becomes next to the machine too a visual evaluation by a trained Examiner showing the shape and the conceptual content of the symbols evaluates, in the post office allows. The shape of the symbols, with orthogonal edges, allows over an integral Measurement of the degree of blackening a particularly simple and fast machine readability. Opposite the bar code becomes a higher information density with the symbol series achieved and thus space in the franking machine print image saved or can by means of the graphical Symbols are printed more information coded.

A major reason that by the required Time duration involved in the formation of the marking data is needed, the printing speed is not is reduced, but in total still increased can, lies in the development of a time reserve during printing, through the microprocessor Control device, the column-by-embedding of Performs window data.

For the procedure for the rapid production of a security impression for franking machines which coded Marking data before a print request after Editing window data and / or frame data of the Postage meter stamp image from same microprocessor a controller that controls the billing and Sequence control takes over, generates, is therefore provided that a pressure control signal after a print request is formed by the in binary pixel data converted tag data during the column-wise Print in the course of a special print routine column by column in the currently printed column to a predetermined Place to be inserted.

The invention assumes that after switching automatically the postage value in the value impression accordingly the last entry before turning off the franking machine and the date in the day stamp according to the current date are given that for the impression the variable data into the fixed data for the frame and for all unchanged data embedded electronically. This variable data the window contents will be briefly referred to as Window data and all fixed data for the value stamp, the day stamp and the ad slogan stamp as Frame data. The framework data is one first memory area of a nonvolatile random access memory removable. The window data is one second memory area for assembly an overall representation of a franking picture removed. According to the invention, the data from both Memory areas according to a freely selectable Assignment before printing to a pixel print image compounded and during printing to a column completed the entire franking machine print image. Those variable data, which during the Pressure to be embedded in the pressure column include at least the marking data. The time required for the previous composition of the entire pixel image with the remaining data is reduced accordingly.

The previous composition is similar to the Date in the postmark and as in the postage value in the stamp, where the variable information in the designated Windows subsequently supplemented and modified can be. It is assumed that a Embedding a variable text part in a frame for an advertising cliche can be done in the same way as with the other window data and that for one Window within the overall presentation of the advertising cliché is defined. To save time, will be only the parts of a graphic representation at a Newly saved change that actually changed become.

The procedure goes to the preparation of a cliche text part change for franking machines assume that loading of agreed cliché types via MODEM or Chip card and selecting a cliché type in can be done in a known manner. According to the invention becomes an optional editing of one in the postage meter stored cliche text part and a composition and the display of an overall view and if necessary, a saving of the edited text part additionally guaranteed before printing.

The arrangement for stereotype text part change for franking machines has according to the invention in a variant a pixel memory and a non-volatile memory with separate storage areas. Next the first memory area for the corresponding memory area Frame data, where the fixed data of the different Cliché types are assigned to a selection, the second memory area for window data, i.a. for a number of assignable plural cliche text parts, intended. The non-volatile memory is stationary with a facility that the data in this second Memory area automatically in a predetermined manner can change, in connection.

In particular, a message should be in an agreed upon Window of a field for an advertising cliché in the franking imprint be transmitted, with the message in Plain text directly addresses the addressee. The Message can not be arranged with the post office be an alphanumeric text part of any Information, e.g. Notes on company holidays, fairs, Conferences and / or public events.

So far, an authorization is required of each user Amendment required by the Postal Authority. The invention therefore continues to be based on the consideration with the post office an approval procedure for to partially agree on cliché types which can be supplemented by the customer, in the franking machine on her keyboard the function for changing alphanumeric text parts within the advertising cliché. This eliminates the need each time new advertising clichés from the postage meter manufacturer or dealer or request its data center and thus also eliminates the associated complex security procedure including the transmission coded Signals for cliché data via modem.

On the one hand, a change of text may not become one reduce counterfeit security and on the other hand in a review of the franking of mail, that with such a cliche text part change is provided in the post office no automatic rejection of the mail as allegedly causing falsification. For a security imprint is therefore a corresponding marking including the fixed Postage meter pixel image data used in cliche text editing remain unchanged, generated.

Advantageously, for changing a Cliche text part on already edited edited Parts of the text used so that during the current Printing a stack of mail, without a print interruption to bring about the advertising cliché partially changed or adapted to the current requirements can be.

According to the invention, hexadecimal is proposed Framework data, window data and assignment data in the each separate memory areas of an additional non-volatile memory and there to save the print image before printing and to edit the cliche text parts can. It takes place thereafter a takeover in the volatile pixel memory and an array of Window data corresponding to the allocation data in the Frame data. But this is by the invention possible to work time optimized, so that the Print speed is high.

Figur 1,

Blockschaltbild einer ersten Variante der Frankiermaschine,

Figur 2,

Ablaufplan für die Druckbilderstellung nach einer zweiten Variante der Frankiermaschine mit drei Pixelspeicherbereichen,

Figur 3a,

Darstellung eines Sicherheitsabdruckes mit einem Markierungsfeld

Figur 3b bis 3e,

Weitere Varianten der Anordnung von Markierungsfeldern für Sicherheitsabdruck

Figur 3f,

Darstellung eines Satzes an Symbolen für ein Markierungsfeld im Werbeklischee

Figur 4,

Sicherheitsabdruck-Auswerteeinrichtung,

Figur 5,

Ablaufplan nach einer dritten Variante der Frankiermaschine mit zwei Pixelspeicherbereichen,

Figur 6,

Ablaufplan nach einer vierten Variante der Frankiermaschine mit einem Pixelspeicherbereich,

Figur 7,

Postwertzeichenbild mit zugeordneten Druckspalten,

Figur 8,

Darstellung der auf ein Pixelspeicherbild bezogenen und davon getrennt gespeicherten Fensterkennwerte,

Figur 9a,

Decodierung der Steuercode, Dekomprimierung und Laden der festen Rahmendaten sowie Bildung und Speicherung der Fensterkennwerte,

Figur 9b,

Einbettung von dekomprimierten aktuellen Fensterdaten vom Typ 1 in die dekomprimierten Rahmendaten nach dem Start der Frankiermaschine bzw. nach dem Editieren von Rahmendaten,

Figur 9c,

Einbettung von dekomprimierten variablen Fensterdaten vom Typ 1 in die dekomprimierten Rahmendaten nach dem Editieren dieser Fensterdaten vom Typ 1,

Figur 10,

Bildung neuer codierter Fensterdaten vom Typ 2 für ein Markierungsbild,

Figur 11,

Decodierung von Steuercode und Umsetzung in dekomprimierte binäre Fensterdaten vom Typ 2,

Figur 12,

Druckroutine für das Zusammensetzen von Daten aus den Pixelspeicherbereichen I und II,

Figur 13,

Druckroutine für das Zusammensetzen aus einem Pixelspeicherbereich I und Arbeitsspeicherbereichen entnommenen Daten,

Advantageous developments of the invention are characterized in the subclaims or are presented in more detail below together with the description of the preferred embodiment of the invention with reference to FIGS. Show it:

FIG. 1,

Block diagram of a first variant of the franking machine,

FIG. 2,

Flow chart for the print image creation according to a second variant of the postage meter machine with three pixel storage areas,

FIG. 3a,

Presentation of a security impression with a checkbox

FIGS. 3b to 3e,

Other variants of the arrangement of marking fields for security impression

FIG. 3f,

Representation of a set of symbols for a checkbox in the advertising cliché

FIG. 4,

Security imprint evaluation device,

FIG. 5,

Flow chart according to a third variant of the franking machine with two pixel storage areas,

FIG. 6,

Flow chart according to a fourth variant of the franking machine with a pixel storage area,

FIG. 7,

Postage stamp image with associated printing columns,

FIG. 8,

Representation of the window image values related to a pixel memory image and stored separately therefrom,

FIG. 9a,

Decoding of the control codes, decompression and loading of the fixed frame data as well as formation and storage of the window parameters,

FIG. 9b,

Embedding decompressed current window data of type 1 in the decompressed frame data after the start of the franking machine or after the editing of frame data,

FIG. 9c,

Embedding decompressed variable window data of type 1 in the decompressed frame data after editing this type 1 window data,

FIG. 10,

Formation of new type 2 coded window data for a marker image,

FIG. 11,

Decoding of control code and conversion into decompressed binary window data of type 2,

FIG. 12,

Print routine for composing data from the pixel memory areas I and II,

FIG. 13,

Print routine for composing data taken from a pixel memory area I and memory areas,

FIG. 1 shows a block diagram of the invention Postage meter with a printer module 1 for a fully electronically generated franking picture, the Advertising slogan and / or a marker for one Safety impression contains, with at least one actuator having input means 2, and with a display unit 3, both via a I / O control module 4 are coupled, a non-volatile Memory 5 for at least the constant Parts of the franking picture and with a control device 6. A character memory 9 provides the necessary print data for the volatile main memory 7. The control device 6 has a microprocessor μP connected to the input / output control module 4, with the Character memory 9, with volatile memory 7 and with the non-volatile working memory 5, with a cost center memory 10, with a program memory 11, with a transport or feed device if necessary with strip release 12, one Encoder (coding disc) 13 and with a Clock / Date Module 8 is in communication.

In character memory 9 are all alphanumeric characters or symbols are stored pixel by pixel as binary data. Data for alphanumeric characters or symbols are in non-volatile memory 5 compressed in shape a hexadecimal number stored. According to the from the encoder 13 delivered position message via the Feed of the mail or paper strip in relation to the printer module 1, the compressed data from read the main memory 5 and using the character memory 9 in a binary pixel data exhibiting Converted print image, which decompressed in such Form stored in the volatile memory 7 becomes. To explain the invention will be below Memory 7a, 7b and pixel memory 7c used, although it is preferably physically physically is a single memory device.

The main memory 7b and the pixel memory 7c stand with the printer module 1 via a print register (DR) 15 and an output logic having printer control 14 in connection. The pixel memory 7c is output side to a first input of the printer controller 14 switched, at the other control inputs Aüsgangssignale the microprocessor control device 6 abut.

The arrangement for the rapid production of a security impression for franking machines, points in non-volatile Memory 5 a first memory area A (inter alia, for the data of the constant parts of the Franking picture u.a. the advertising cliché frame, being a associated indication i denotes the respective frame), and a pixel memory area I in the volatile one Pixel memory 7c on. For a quick change of Window data, in particular for a fast cliche text part change There is a second memory area B in the non-volatile memory 5 and a Pixel memory area II in the pixel memory 7c for the selected decompressed variable part data of the franking picture. A saved cliche text part is still by an assigned name or indication j.

The data for a first assignment of the name of the Cliche text parts to the names of the cliché frames lie in a third memory area C of the non-volatile Memory 5 before. Through this assignment the records in the memory areas A and B addressed and automatically called accordingly become.

The memory areas A to T in the nonvolatile random access memory 5 may contain a multiplicity of sub memory areas, under which the respective data are stored in data records. The sub-memory areas A _i are provided for i = 1 to m frame or fixed data, B _j for j = 1 to n window data and B _k for k = 1 to p window data, wherein different associations between the sub-memory areas of the various memory areas selectable and / or are stored in a predetermined manner.

The number chains (sTrings) which are input for the generation of the input data with a keyboard 2 or via an electronic balance connected to the input / output device 4, calculating the postal value and not shown in FIG. 1, are automatically entered in the memory area T of FIG nonvolatile random access memory 5 stored. This ensures that the last input variables are retained even when the postage meter machine is switched off, so that after switching on, the postage value in the value impression corresponding to the last input prior to switching off the franking machine and the date in the date stamp is preset according to the current date. In addition, data sets of the sub-memory areas, for example A _i , B _j , C, etc., also remain. In each record of a sub-memory area A _i , B _j and B _k , control codes and run-length-coded frame or window data are alternately included in succession.

The corresponding temporary assignment from window to Frame data will be displayed after switching on according to the current or predefined future date of the microprocessor having a control device 6 hit. Before printing will be out of the non-volatile memory 5 the respective selected Framework data for the advertising slogan stamp, for the postmark and for the postage stamp in the Register 100, 110, 120, ..., of a volatile Memory 7a taken over, during the Take control code decoded and in a separate Memory area of the working memory 7b stored become. Likewise, the respective selected Window data in register 200, 210, 220, ..., loaded. Preferably, the registers become sub memory areas in the memory area of the main memory 7a educated. In another variant these are aforementioned register part of the microprocessor control 6th

By decompressing, the run-length encoded hexadecimal data into corresponding binary pixel data transferred. Here are the decompressed binary Pixel data, unchanged over a longer period of time stay in a first pixel memory area I and the binary pixel data that changes frequently in adopted a second pixel memory area II. The Figure 1 shows a block diagram for such a first Variant of the solution according to the invention.

New frame and / or window data can be selected as long as after inserting and saving binary pixel data into the first pixel memory area I and the selection of editable window data followed by Decompress as well as their storage as binary pixel data in the second pixel memory area II still no print request is present.

For example, a large number of the same letters with the same date and with the same Post value to be freed, but in the same Moment, as well as the input is done, that one Replacing cliche text part, which in the second pixel memory area II is loaded. Especially it is advantageous, albeit the security markings in such a window in the postmark or in the Day stamp or between two stamps accommodated become. Reloading the pixel memory area II with the decompressed window data, the the selected ones in the memory areas of the main memory 5 compressed stored correspond to present, done before printing. The assembling with the remaining stored in the pixel memory area I. binary pixel data is preferably present a print request during a print routine. to Selection of the cliché text data now needs the Pressure not to be interrupted. The invention thus allows a fast uninterrupted Change of the advertising cliche text part and the marking, up to a printing speed of approx. 6000 letters per hour, for example on the basis of 16 bits Processor technology.

The number of printed letters with the respective above-mentioned Setting of advertising clichés will be in the Postage meter for a later evaluation registered.

In a further embodiment of this first variant, is - in a not shown in the figures Way - a variety of each separate Pixel storage areas for frame and for Window pixel data provided. The window data affect u.a. the current postage (postage) and franking machine specific data (serial number) in Franking stamp, the date or additional appropriate Data (absolute time or quantity) in the postmark, editable cliche text file details in cliché stamp. The composition of the frame and window pixel data takes place again - as in the first variant - during the execution of a special print routine.

FIG. 2 shows a second variant of the invention Solution. It can also be specially generated encrypted and in a sixth memory area F stored marking data used for identification become. The arrangement for stereotype text part change for Franking machines now has three separate pixel memories Storage areas on. Next to the first Memory area I for the data of the cliché type (Frame), the postal value and the current date and the second memory area II for several assignable Cliche text data becomes a third memory area III provided for the marking data. The Establish the data in this first, second and third memory area can change is the the same microprocessor of the control device 6, the also the billing routine and the print routine performs. The data from the three memory areas are determined according to a predetermined (in certain limits freely selectable) assignment during the Print to an overall presentation of an advertising cliché composed.

In particular, in amendment to DE 40 03 006 A1 shown solution, a marking of mail on the base of a crypto number generated to mark Enabling identification of postage meters be made without difficulty if the multi-digit crypto not included the data values of the data stored as a hexadecimal number entire clichés, but only with inclusion selected data values of the cliché frame and additional data, such as the machine parameter of the value setting and the date formed and cached becomes.

It is assumed that not only numeric or Numerical values, such as the number of the used Advertising clichés, but data values of image information used to form the encrypted information becomes. In contrast to DE-PS 40 03 006 can for Forming the crypto number any area of the Advertising clichés, which separate data, in one Record assigned are used. Out For this purpose, this data set will be individual data selected. It is advantageous that the Column end for each column to be printed as control code which is coded to the run length coded hexadecimal data connects. In this case, preferably the first in the record run-length encoded hexadecimal data become.

In development of the inventive solution is by an existing in the machine and / or generated physical size, in particular by the current one Date, the associated column-wise regional data Image information selected from the record to at least a number of data (hexadecimal numbers) too remove.

Furthermore, you can also add to each ad copy number several records can be assigned, with each one being Record those a subset of the Promotional data. It will by an existing in the machine and / or generated physical size, the record with the associated Data of the column-wise regional image information selected to contain at least a number of data (Hexadecimal numbers).

Preferably, those of a predetermined Print column corresponding runlength encoded hexadecimal Data together with at least some of the Data of the machine parameters (serial number, monotone changeable size, time data, inspection data, such as For example, the number of prints in the last Inspection) and the postage value to a number in more specifically - in connection with FIG. 10 explained - way combined and encrypted.

In the formation of new coded window data before their Storage in the third storage area III can for a high safety standard, for example the DES algorithm (Data Encryption Standard) for Encryption and additionally a conversion into one special graphic character set.

However, other encryption methods are as well Methods for converting the crypto number into a Marking or marking suitable.

A bar code claimed in the postage meter print image depending on the coded amount of information under certain circumstances considerable space or forces to Enlargement of the franking machine imprint or it can not print all the information in the bar code played.

According to the invention, a special graphic Symbols existing particularly compact impression related.

An example formed from to be printed symbols License plate can before, behind, under u./o. over one Field within the actual postage stamp impression to be printed. This is it according to the invention, by humans, as well machine-readable mark.

A letter envelope transported under the printer module 1 17 is with a postage meter stamp image printed. The check box is located in a manner advantageous for an evaluation in one Line below the fields for the value stamp, for the Daily cancellation, for the advertising cliché and possibly in the field for the optional printing accessory of the postage meter stamp image.

From a - shown in the figure 3a - representation a first example of the security print can be seen that a good readability for a manual Evaluation as well as machine readability with good Identification security is given.

The check box is in one within the postage meter image under the Day stamp arranged window FE 6. Der den Postal value in a first window FE 1, the Machine serial number in a second and third Windows FE 2 and FE 3 contains value stamps If necessary, a reference field in a window FE 7 and a If necessary, enter the number of the advertising cliché in one Window FE 9 on. The reference field serves for pre-synchronization for reading the graphic string and to obtain a reference value for the Light / dark threshold for a machine evaluation. A pre-synchronization for reading the graphic String will also be through and / or in connection with the frame, in particular the postage stamp or Value stamp reached.

The fourth window FE 4 in the day stamp contains the current or entered in special cases predated date. Underneath is an eighth window FE 8 for a compressed exact time, in particular for high-performance franking machines with tenths of a second. This ensures that no impression one similar impression, causing a fake by Copying the impression with a copier useless becomes.

A fifth window FE 5 is in the advertising cliche for a editable advertising cliché text part provided.

FIG. 3b shows the representation of a security impression with a checkbox in the columns between the stamp and the date stamp can be seen, wherein the upstream vertical part of the Frame of the value stamp of the Vorsynchronisation and if necessary serves as a reference field. This eliminates one separate window FE7. The marking data can be in this variant with a vertical arrangement of Series of symbols in near-time in near-time be detected.

It is also possible, compared to those in the figure 3a shown windows more windows for the open save unencrypted impression. This is On the other hand, the printing speed can be increased, because less windows before printing in the frame data are embedded and thus the formation of Marking data can start earlier. To achieve a simple copy protection is already sufficient cryptographic imprint using marker symbols, without an open unencrypted imprint of the absolute Time in a window FE8. In the checkbox FE 6 are the marking data, which due to at least the Post value and such a time count generated are - as explained below with reference to FIG 10 is - already sufficient.

In a - shown in Figure 3c - third Example of the security impression is in addition to the variant shown in Figure 3b another Checkbox in the postmark under the window FE 1 arranged for the postal value. Here are more Information, for example, about the number of Selected advertising clichés, unencrypted but in one Machine-readable form to be communicated.

In the figure 3d are in a fourth example of the security print, two more checkboxes in the postmark below and above the window FE 1 for the Postal value arranged.

In the figure 3e are in a fifth example of the security print, two more checkboxes in the postmark below and above the window FE 1 for the Postal value arranged. Where the check box, which in the postmark over the window FE 1 for the Postal value is arranged on a barcode. In order to can provide more information, for example about the Number of the selected advertising clichés, unencrypted but communicated in a machine-readable form.

With fewer available symbols Sentence, need more symbols for the same information to be printed. Then a symbol series can either two-line or in the form of a combination of in the Figures 3a to 3e shown variants.

The marking form is free with any postal authority compatible. Any general change of the marking picture or the arrangement of the marker field is because of the electronic pressure principle easily possible.

The arrangement for the rapid generation of a security impression for franking machines allows a fully electronically generated franking image, which was formed by the microprocessor-controlled printing process from fixed data and current data, to be set. For this purpose, a third memory areas C are provided in the non-volatile main memory, in which data for a first assignment of the names of the variable parts to the names of the constant parts are present. In contrast, the data for the constant parts of the franking image which relate to at least the frame of an advertising cliche are stored in a first storage area A _i , with an associated name identifying the cliché frame, and the data for the variable parts of the franking image are in a second storage area B _j or for tag data is stored in a memory area B _k , where an associated name identifies the variable part.

At predetermined intervals, for example regularly at every inspection of the franking machine, can In addition, a change or replacement of - in the 3f-set of symbols to increase counterfeit security.

FIG. 3f is an illustration of a sentence Symbols for a check box are shown, with the Symbols are formed in a suitable manner, so that both a machine as well as a visual evaluation by trained personnel in the postal authority becomes.

To increase the security against counterfeiting, a sentence is added Symbols used that are not in the default character set is included by usual pressure equipment.

Opposite a barcode is with a higher Information density when imprinting the symbols space saved. It suffices, between 10 To differentiate blackening levels, for example by about a factor of three compared to the ZIP CODE shorter length in the representation of the information too to reach. Thus, there are ten symbols, where the blackness differs by 10% each. at a reduction to five symbols can be the Blackness differ by 20%, but it is necessary, the number of symbols to be printed considerably increase if the same information as with the symbol set shown in FIG. 3f, should be reproduced. Also a sentence with a higher number of symbols is conceivable. Then shortened the row or rows of symbols correspond to each other, however, it also reduces accordingly Detection security, so that then suitable evaluation digital image processing, for example, those with edge detection, required are. Through the continuous use from orthogonal edges and waiving roundness, will already with simple algorithms of digital Image processing a sufficient recognition security reached. Use such recognition systems For example, commercial CCD line scan cameras and Personal computer based image processing programs.

Another advantage over a bar code is in by the symbolism of the picture content conditional good readability of the individual to each other lined up icons in the check box and the Possibility of image content for a manual evaluation to understand language.

In the preferred variant, the check box is at least under or in a field of the postage meter stamp image arranged and it becomes a line of such symbols below the franking stamp imprint and at the same time printed with this. By the Character memory 9 becomes a conversion of a Crypto-number in a marked symbol performed. In particular, one by another physical size, advantageously by the Postal value, selected list representing the individual Assigns crypto-numbers to graphical symbols. This will be the encrypted hexadecimal data decompressed by means of the character memory to the from the symbols to be printed license plate To Print. This is also one of them machine-readable mark.

The machine identification of the symbols in License plate can be made in two variants: a) via the integrally measured density of each symbol or b) via edge recognition for symbols.

By the quantized blackening difference between the symbols becomes a simple machine Evaluation without a complex pattern recognition allows. For this purpose, a suitable in a reader arranged focused photodetectors.

Even with different colored envelopes is this simple machine evaluation possible. To the Compensation gained different measured values whose Difference due to the different pressure conditions or paper grades, becomes a reference value derived from the reference field. The reference value is used for the evaluation of the degree of blackening. With this reference value obtained can be in advantageous Do a relative insensitivity too against failed printing elements, for example a thermal strip 16 in the printer module 1 can be achieved.

The advantage of a used symbol set of the specified Type is that, depending on the requirement of respective national postal authority in a simple way mechanically (by for example integral measurement of Degree of blackening of the symbols) and / or manually one Identification of an authentic franking stamp about the conceptual content of the icons is enabled.

Created for each serial number or user preferably in databases of the data center for all Postage meters stored present lists contain data values for each variable that are used for Checking the authenticity of a franking be used. So on the one hand the assignment of the Symbols for listed weights and on the other hand in another - not shown in FIG. 3f - Set of symbols the assignment of meaning and Degree of blackening different for different users be determined.

A corresponding - shown in FIG. 4 - Evaluation device 23 for a manual identification has a computer 26 with suitable program in Memory 28, input and output devices 25 and 27 on. The used at the respective postal authority Evaluation device 23 stands with a - in the figure. 4 not shown - data center 21 in conjunction.

a) visuelles Erfassen der Seriennummer und deren Eingabe über eine Eingabeeinrichtung 25,

b) visuelles Erfassen des Postwertes und Eingabe über die Eingabeeinrichtung 25,

c) visuelles Erfassen der graphischen Symbole und Eingabe über eine entsprechend gekennzeichnete Funktionstasten aufweisende Eingabeeinrichtung 25,

d) Start einer automatischen Auswertung, ggf. in Zusammenwirken mit einem Datenzentrum 21 und Signalisierung des Vergleichsergebnisses oder Anzeige mindestens eines Teils der aus der Markierung zurückgewonnenen Größen zur manuellen Überprüfung durch einen Prüfer der Postbehörde.

A suitable method for checking security impressions consists in the following steps:

a) visual capture of the serial number and its input via an input device 25,

b) visually detecting the post value and input via the input device 25,

c) visually acquiring the graphical symbols and input via an appropriately labeled function keys having input device 25,

d) Start of an automatic evaluation, if necessary in cooperation with a data center 21 and signaling of the comparison result or display of at least a portion of the quantities recovered from the marking for manual inspection by a verifier of the postal authority.

In a first evaluation variant are in the Input device 25 by the trained examiner manually or by means of a suitable reader 24 automatically the graphical symbols entered in order to on the mail (letter) printed mark in to convert back at least one first crypto KRZ1. Here, the actuators, in particular Keyboard, the input device with the symbols be marked to the manual input too facilitate.

In a second step, those from the Franking machine stamp image removable open-print Sizes, especially G0 for the serial number SN of the franking machine, G1 for the advertising cliché (frame) number WRN, G2 for date DAT and G3 for date Postal value PW, G4 for non-repetitive time data TIME and from at least one only the franking machine manufacturer and / or the data center known and the postal authority notified size G5 INS at least partially used to at least one Comparative crypto VKRZ1 form.

The verification takes place in a third step Comparison of the crypto numbers KRZ1 with VKRZ1 in the computer 26 the evaluation device 23, wherein a signal for Eligibility for equality or non-entitlement with negative comparison result (inequality) is delivered.

A second evaluation variant consists of the printed mark to recover the individual information and with those open on the mail piece compare printed information. Were the Crypto numbers for marking after a symmetric Algorithm (eg DES algorithm), so after the first step the first Evaluation variant from each crypto again the Output number can be generated. The starting number is one Combination number KOZ and contains the number combination at least two sizes, with one size through the upper digits of the combination number KOZ and the other size represented by the lower parts of the KOZ becomes. The part of the number combination, which is to be evaluated, for example the postal value is disconnected and displayed. Thus omitted here the second and third step of the first evaluation variant.

For evaluation, one with a corresponding suffices Program equipped device (laptop). Here you can possibly also from the postage meter stamp image not removable sizes G1 possibly G4 and at least one only the franking machine manufacturer and / or the Data center known and communicated to the postal authority Size G5 be encrypted. These will too recovered from the mark by decryption and then can be saved with the user-specific Sizes are compared. The in memory 28th stored lists can be connected via a link the data center 21 are updated. details Explanations are related to the - in of Figure 10 - step 45, a formation new coded "type 2" window data for a Mark picture made.

In a third evaluation variant are in the evaluation manually or automatically by the operator Sizes G0, G2, G3 and G4 are entered to use with the same key and encryption algorithm, like he is used in the franking machine, a crypto number derive. A mark generated from it becomes displayed and by the operator with the on the mail (Letter envelope) printed mark compared. the is the symbolism of the in the output unit 27th presented and printed on the mail Markings against.

Is an inexpensive (possibly simple unbalanced) Encryption algorithm used, for example a - not shown in the figures - purely mechanically acting template can be produced, the set accordingly, displays individual symbols. So are next to the frame number of the viewer recognizable used advertising frame, the Serial number, the date from the postmark and the Set postal value from the franking mark. A from this formed series of symbols is represented and can start with the row shown in the check box Symbols are compared. The verification takes place by comparing the markers to permission Equality or non-entitlement for negative Result of comparison (inequality).

The first size G1 is the advertising tile frame number WRN which the examiner recognizes from the franking stamp image. In addition to the user, this first variable is also known to the franking machine manufacturer and / or data center and is communicated to the postal authority. In a variant, preferably with a data connection to the data center, the advertising frame frames WR _{n associated} with the serial number SN of the respective franking machine are displayed with assigned numbers WRN _n on a screen of the data output device 27. The comparison with the advertising frame WR _b used on the letter is made by the examiner who inputs the thus obtained number WRN _n .

The transmitted from the data center in the memory 28 stored lists contain on the one hand the current assignment of the parts of the advertising cliché frame WRNT to a second size G2 (for example, the Date DAT) and on the other hand the assignment of symbol lists to a third size G3 (for example the Postage value PW). In addition, a list of through the first size G1, in particular the advertising cliché (frame) number WRN, selected parts SNT of the serial number SN to be available. User-specific information, such as For example, the ad clip frame number WRN can be used for random manual evaluation of the marking be used by decoding lists due to the user-specific information can be selected, the contain corresponding records. With the size G2 (DAT) will then be the byte from the record determines what happens when generating the combination number is used.

In the preferred variant is on the one hand for testing the distinctiveness of the impression a monotony test used. The examiner takes the serial number SN the windows FE2 and FE3 of the impression and sets the Frank machine user. This can additionally the ad unit numbers are used as they are in usually assigned to specific cost centers, if one and the same machine of different Users is used. In the o.g. Lists are data of last exam, etc. also data from the last one Inspection registered. Such data is for example, the number of pieces, if the machine over has an absolute piece count, or the absolute Time data, if the machine has an absolute Time counting features.

In the first test step, the correctness of the printed postage value according to the valid Provisions of the postal authority reviewed. This can be done in fraudulent intent Manipulation of the value impression can be determined. in the second test step becomes the monotony of the data, especially the one checked in window FE8. With that you can Copies of a franking imprint can be determined. A manipulation for the purpose of counterfeiting is therefore not promising, since these data in the form of a cryptized symbol series additionally in at least be printed on a check box.

For an absolute time or piece count, must be at the impression the number given in window FE8 has increased since the last exam. In the window FE8 are nine digits, representing the representation a period of about 30 years with a resolution of seconds, allowed. Only after this time would the Overflowed counter. From the mark this can Sizes are recovered to open with them compare printed unencrypted sizes.

In a third optional test step can then at Suspected of manipulating even the other sizes, in particular the serial number SN of the franking machine, if necessary the cost center of the user checked and be determined.

The information, as the advertising cliché (frame) number WRN, on the other hand, can by a predetermined window FE9 be specified. The associated window data is Type 1, i. they are changed less often than Type 2 window data, such as in the window FE8 the TIME and in window FE6 the marking data.

In a further embodiment, the data the windows FE8 and FE9 are not open unencrypted but are just for encryption used. Therefore, they are missing from FIG. 3a shown windows FE8 and FE9 in the - in the figures 3b to 3e - franking machine print images, to illustrate these variants.

In a preferred input variant for the exam are the temporarily variable variables to be entered, For example, the advertising cliché (frame) number WRN, the Date DAT, the post value PW, time data TIME and the Serial number SN automatically by means of a reader 24 in each case from the corresponding field of the postage meter stamp image detected and read. Here is the arrangement of the windows in the franking machine impression to comply in a predetermined manner.

Others associated with the respective serial number SN temporarily variable sizes are only the franking machine manufacturer and / or data center known and will be notified to the postal authority. For example, serves defined at the last inspection Number of frankings, as a fifth size G5.

All sizes to enter, except sizes G1, G4 and G5, have the individual windows FEj the franking machine stamp image be removable. This forms the Size G5, for example, the key for encryption, at predetermined time intervals, i.e. after each inspection of the franking machine will be changed. These time intervals are like this measured that it also with application of modern Analysis methods, such as the differential Cryptanalysis, certainly not succeed, from the Markings in the marking field the original information to reconstruct, then counterfeit Make franking stamp images.

The size G1 corresponds, for example, a Werbeklischee (frame) number. In the sub-memory areas T _i , T _{j of} the main memory 5 of the franking machine, corresponding number strings (sTrings) for window or frame input data are stored.

The sizes G0, G2 and G3 correspond, for example, to the window data stored in the sub-storage areas T _{j of} the main memory 5 of the franking machine, the size G0 in the windows FE2 and FE3 from the sub-storage areas T ₂ and T ₃ , the size G ₂ in the window FE4 from the window Subspace T ₄ and the size G3 in the window FE1 from the sub-storage area T ₁ stems.

a) Laden vereinbarter Klischeerahmen über MODEM oder Chipkarte,

b) Selektieren eines Klischeerahmens,

c) Editieren eines Klischeetextteils, das vor dem Frankieren automatisch abgespeichert wird,

d) Zusammensetzen und Anzeige einer Gesamtdarstellung des Frankierbildes,

For cliché text part change for postage meters, the following steps are provided:

a) loading agreed cliché frames via MODEM or smart card,

b) selecting a stereotype frame,

c) editing a cliche text part that is automatically stored before franking,

d) assembling and displaying an overall representation of the franking image,

If steps a) to c) have already been carried out before have been stored, the stored cliché frame with the used cliché text parts immediately displayed and selected to make a change in the Cliché or the combination of a cliché with the selected cliche text part without a print interruption to effect.

It is further provided that in the display unit 3 of the franking machine for the selection of a cliché frame is a representation of a number of names of the stereotypes frame or a clear representation for selecting the stereotype frame with associated cliché or standard text part of a pixel memory. By acknowledging the selection, an assignment of at least one of the variable text parts for FE5 to the respective cliché frame is made. By means of the actuators editing of the selected cliche text part can be done with simultaneous clear text display. After editing a cliche text part for the window FE5 and assembling and displaying an overall representation of a franking image, the edited text part is automatically stored before franking, whereby a new data record or a new assignment of the edited text part to the cliché frame in the memory areas B ₅ or C is stored.

In each case, the windows within the overall representation of the advertising cliché impression are defined so as to store in a separate sub-storage area B ₅ only the parts of a graphic representation in the event of a change, which are actually changed. The data of the window contents are the memory area B for the purpose of assembling to an overall representation of a franking picture again removed. At least in one area of the nonvolatile random access memory 5, a run-length coding of graphical data has been provided, the first code of each line of the coding indicating the number of pixels to be printed per column and control codes, for example, for windowing of the respective windows (types 1 or 2), Column End, Image End are in hexadecimal notation.

The cliché data and the data for the variable cliche text parts are extracted from the storage areas A _i and B ₅ as needed, taking the assignment into account. In the sub-memory areas B ₅ , a plurality of data sets for the cliche text parts are preferably stored. At startup, the user enters his cost center, whereby a predetermined frame frame data set from the storage area A _{i is} selected. By the selectable stereotype frames are each assigned to a cost center KST and / or a second assignment of stereotype type number to cost centers is stored in a fourth memory area D, the control unit 6 can perform the predetermined compilation of the print image data.

It is envisaged that the names of the cliched frames stored in a first storage area A are composed of the number KN of the cost center K and a type number TN such that the names of the cliche text parts stored in a second sub-storage area B ₅ are replaced by the one at the time of Generation current date and possibly determined by the time UZ and that the data for the first assignment in the third memory area C by storing both the cost center number CN and the type number TN containing name of the stereotype frame, as well as a date DAT and possibly a time UZ containing name of the cliche text part are determined. Depending on the selected cost center, an assignment is found in the memory area D and a predetermined record for the cliché frame from A _i selected. The associated cliché text part can be addressed on the basis of the assignment given in the memory area C in the memory area B ₅ and then automatically transmitted to the memory area 7a of the volatile main memory 7.

It is also envisaged that for a cliché selection required display in the display unit 3 is done only by names of such stereotypes, for which assignments falling within a defined period exist in the third memory area C. A cliché frame without existing assignment of a name a cliche text part name can not be displayed become. The assignment may be e.g. on the period of the current year. After selecting the The name and an acknowledgment are assigned to the corresponding cliché frame displayed in clear view.

The representation of the names of cliché text parts is done in the designated window of that field the display unit 3, in which also the Klardarstellung the cliché frame is visible.

For another variant of the illustration is for the better Selection of cliché text parts immediately after each other in one of the time dates of the name Sequence the clear representations of the cliche text parts in the window of the field of the display unit appear.

In a preferred variant is the defined period through the selectable time data in the data of Assignment of cliché text parts, especially those Time data such as the month and / or the year, in relation to the current of a clock / Datebaustein 8 delivered automatically.

In a further advantageous embodiment of the inventive concept is an assignment in a fifth Memory area E given which a freely programmable defined period in which the time data in the data of the associations of cliche text parts to cliché frames with the current Date related.

In the sub-memory areas B ₅ B ₆ and B _{7 of} the main memory 5 of the franking machine are the stored window data for a Werbeklischeetextteil, a check box and possibly for a reference field. It should be noted that in some of the sub-memory areas of the main memory 5 of the franking machine designated as B _k , the window data are written in and / or read out more often than in other sub-memory areas. If the nonvolatile memory is an EEPROM, a special memory method can be used to safely stay below the limit of memory cycles allowed for it. On the other hand, it is also possible to use a battery-supported RAM for the non-volatile main memory 5.

The temporally less changeable window data will be hereafter referred to as type 1 window data. On the other hand, with type 2 window data below the constantly changing window data called.

In FIG. 5, in relation to that in FIG. 2 shown second variant - now a third variant represented the solution according to the invention, wherein the Method for the presence of - in the figure 1 - is based on two pixel memory areas shown.

According to the frequency of a change of data, are decoded binary frame and window data in stored two pixel memory areas before printing. The window data of the type 1 which can not be changed constantly like date, serial number of the franking machine and that for several prints selected cliche text part before printing along with the frame data in Binary data decompressed and to one in the pixel memory area I stored pixel image composed become. In contrast, constantly changing window data of type 2 decompressed and as binary window data in the second pixel memory area II before printing saved. Type 2 window data is the too printing postage and transport-dependent postal value and / or the constantly changing marker. After a Print requests are made in the course of a print routine during printing for each column of the printed image the binary pixel data from the pixel memory areas I and II assembled into a print column control signal.

After the start in step 40 is due to the Enter the cost center in step 41 an automatic Enter the last currently saved window and frame data and in step 42 a corresponding one Display. In the manner described above, a Cliche text part, which a certain advertising cliché is assigned automatically.

In step 43, frame data in registers 100, 110, 120, ..., the volatile memory 7a taken and thereby control code detected and in the volatile Memory 7b stored. The remaining framework data are decompressed and stored in the volatile pixel memory 7c stored as binary pixel data. Likewise, the Window data in registers 200, 210, 220, ..., des volatile memory 7a loaded and thereby Control code detected and in volatile memory 7b stored and the remaining window data after their Decompression according to columns in the volatile Pixel memory 7c stored.

In FIG. 9a, the, decoding of the control code, Decompression and loading of the fixed frame data as well as the formation and storage of the window characteristics and in FIG. 9b the embedding of decompressed current type 1 window data into the decompressed frame data after the start of the Postage meter or after editing by Framework data shown in detail.

In step 44 are either the decompressed Frame and window data of type I as binary Pixel data stored in Pichelspeicherbereich I before and may be further processed in step 45 or there will be a new input of frame and / or Window data. In the latter case, the step 51 branched.

In step 51, the microprocessor determines whether via the input means 2 an input is made to Window data, for example, for the postal value, through to replace a new one or window data, for example, for a cliche text line to replace or edit. Is such an input made, At step 52, the required sub-steps for the inputs are made, i. it will be a finished one other data set selected (cliche text parts) and / or generates a new record that stores the data for the individual characters (numbers and / or letters) of the Input size contains.

In step 53, corresponding records for a Display for checking the input data is called and for the subsequent step 54 to reload the Pixel memory area I with the window data of type 1 provided.

In FIG. 9c, the step 54 for embedding decompressed type 1 variable window data into the decompressed frame data after a new entry or after editing this type 1 window data shown in detail. The data from according to the Input called records are evaluated to Control code for a "color change" or a To detect "column end" which is for embedding the newly entered window data is required. Then those data are not tax code are decompressed into binary window pixel data and in the pixel memory area I embedded in columns.

If, on the other hand, it was determined in step 51 that no Window data should be selected or edited, then a branch is made to step 55. In step 55 introduces the possibility to change the used fixed advertising clichés or framework data on one Step 56 to enter the currently selected one Frame data sets together with the window records perform. Otherwise, the step 44 branched.

If a new input of selected special sizes take place, a flag is set in step 44 and at the subsequent step 45 for formation of Data for a new marker symbol series considered, if here after a second variant a step 45b is to be completed.

In step 45, the new coded is formed Window data of type 2. Preferably here are the Marking data generated for a window FE6, where previous steps of encrypting data for Generation of a crypto number are included. In This step 45 is also a shape as Bar code and / or symbol chain provided. Based on FIG. 10 shows the formation of new variants in two variants coded window data of type 2 for a marker image explained. In a first variant are in a step 45a, a monotone variable processed, so that ultimately by the printed Markers symbol series every footprint unmistakable becomes. In a second variant, in one step 45b processed before the step 45a other sizes.

The correspondingly formed data record for the marking data is then loaded in an area F and / or at least in a sub-memory area B _{6 of} the non-volatile main memory 5, thereby overwriting the previously stored data record for which window characteristic values have already been determined or are predetermined and now only in the volatile random access memory 7b are stored. The sub-memory area B ₁₀ is preferably provided for a data record which leads to the printing of a second marker symbol row, as shown in FIGS. 3 c and 3d. In addition, double rows of symbols - in a manner not shown in Figure 3b - can be printed side by side. The area F is preferably provided for a record leading to the printing of a bar code, as shown in Figure 3e.

In step 46, data is transferred byte by byte into the volatile memory register 7a and the control characters "color change" and "column end" are decoded to decode the remaining data of the data set and decoded binary window pixel data of type 2 into the pixel memory area II of the volatile random access memory 7c. FIG. 11 shows in detail the decoding of control code and conversion into decompressed binary type 2 window data. Such type 2 window data are identified in particular by the index k and relate to the data for the window FE6, if necessary, to FE10 for marking data and optionally to FE8 for the time data of the absolute time count. Even the time data represent a monotonously variable, since time-dependent increasing size. First, still BCD-packed, supplied from the clock / date module 8 time data, if necessary, converted into a suitable TIME data record containing run-length-coded hexadecimal data. Now they can also be stored in a memory area B ₈ for type 2 window data FE8 and / or loaded in columns 46 in register 200 of the main memory 7a or in the pressure register 15 immediately in step 46.

In step 47, upon a successful print request on the a print routine including step 48 and in the case of a print request that has not yet been completed in Waiting for the print request. In one embodiment, the holding pattern is - in the Figures 5 and 6 shown - at the beginning of Step 47 returned directly. In another Embodiment is the holding pattern - in one in the Figures 5 and 6, not shown way - to the beginning of step 44 or 45 returned.

The printing routine for assembling printing gap data from the pixel storage areas I and II, which is shown in detail in FIG. 12 in step 48, takes place during the loading of the printing register (DR) 15. The printer control (DS) 14 effects this directly after the loading of the Print register (DR) 15 a pressure of the loaded printing column. Subsequently, it is checked in step 50 whether all columns for a franking machine print image are printed by comparing the current address Z with the stored end address Z _end . If the print routine for a mail item is executed, the system branches to step 57. Otherwise, the program branches back to step 48 to generate and print the next print column until the print routine is completed.

When the print routine is finished, in step 57 Checked if further mail pieces are to be franked. is this is the case, then in step 60, the franking completed. Otherwise, the end of printing is not yet reached and it is branched back to step 51.

In the figure 6 is a fourth variant of solution according to the invention, wherein different from the Block diagram of Figure 1 only a pixel memory area I used is shown. In the sen pixel memory area I become decoded binary Frame data and Type 1 window data before printing assembled and stored. The steps are up on the step 46, which here in this variant is saved according to the figure 6, and the step 48, which is replaced by step 49 here, identical. Until step 46 results in Essentially a same order in the process.

FIG. 13 details the printing routine for the composition of a pixel memory area I and Data taken from memory areas.

The constantly changing type 2 window data will be displayed in the Step 49 during the printing of each column decompressed and along with the columns too printing binary pixel data from the pixel memory area I is composed into a print column control signal. Type 2 window data is for example the to be printed postgut- and promotion-dependent Postage value and / or the constantly changing marking.

Based on a postage stamp image shown in FIG. 7 and the data of the print control signal assigned to a print column, its generation from the frame and window data is explained. A letter envelope 17 is moved under the printing module 1 of an electronic postage meter machine with the speed v in the direction of the arrow and printed in the column s ₁ starting grid-like columns by column with the illustrated Postwertzeichenbild. The printer module 1 has, for example, a pressure bar 16 with a number of pressure elements d1 to d240. For printing, the inkjet, or a thermal transfer printing principle, for example, the ETR printing principle (Electroresistive Thermal Transfer Ribbon) can be used.

A column s _f to be printed has a printed pattern 30 to be printed consisting of colored dots and non-colored dots. In each case a colored pressure point is printed by a printing element. On the other hand, the non-color printing dots are not printed. The first two printing dots in the printing column s _f are colored to print the frame 18 of the postal stamp image 30. Then, 15 non-colored (ie non-active) and 3-colored (ie active) pressure points are alternately followed until a first window FE1 is reached in which the postal value (postage) is to be inserted. This is followed by a range of 104 non-colored pressure points to the end of the column. Such run-length coding is realized in the data record by means of hexadecimal numbers. The storage space requirement is minimized by having all the data in such a compressed form.

With hexadecimal data "QQ" 256 bits can be generated become. If one of them the required Control code bits subtracted remain less than 256 Bit for controlling the dots generating means.

But if you use additional a color change causing control characters "00", even more than 256 dots can be controlled, in the sub-memory area A _{i of} the main memory 5 but now more space is needed. The exemplary embodiments according to FIGS. 9, 11, 12 and 13 are designed for such a high-resolution printer module.

Control characters are "00" intended for color change. Thus, a following hexadecimal number will still be considered evaluated in color (f: = 1), otherwise not colored would apply. A reset color flip-flop (f: = 0) is set at color change (f: = 1) and at the next Color change switched again (f: = 0). With this In principle, 256 dots or more can be addressed become. The register 15 in the print controller 14 becomes loaded bitwise from the pixel memory (e.g., for a Pressure column with N = 240 dots).

Further control characters are "FE" for column end, "FF" for picture, "F1" for the beginning of the window of the first Window FE1, etc.

In the following example, which is used to explain FIG. 7, less memory space in the ROM is required compared to a pressure column to be controlled with more than 240 dots, since the control characters are placed favorably. For hexadecimal data "01", "02", ..., "QQ", ... "F0" are 1 to 240 dot ("F0" = [F * 16 ¹ ] + [0 * 16 ⁰ ] = [ 15 * 16] + [0 * 1] = 240).

Here can the tax code "00" for color change theoretically omitted, as with a single Hexadecimal number "F0" a whole column of pressure of 240 Dots with a same color scheme complete can be defined. Nevertheless, at only imperceptible Multiple storage requirements, with several windows in a column also makes sense to a color change.

This method yields a data set for the pressure column s _f in the form shown in detail:
... "2", "0D", "02", "4F", "F1", "68", "FE", ..., ...

When transferred to a register 100 of the μP controller 6 become hexadecimal numbers "QQ" control characters detected and in the course of a step 43 evaluated.

In this evaluation also window characteristics Z _j , T _j , Y _j or Z _k , T _k , Y _{k are} generated and together with specified values for the start address Z ₀ , end address Z _end and the total run length R, ie the number of per printing column required binary data stored in volatile memory RAM 7b.

For the 13 control characters "F1" to "FD", a maximum of 13 windows could be called and the start addresses determined. For example, with "F6" for window start of a window FE6 of type 2, an initial address Z ₆ can be determined and stored as a window characteristic value.

FIG. 8 shows a representation of the window characteristic values relating to a pixel memory image and stored separately therefrom for a first window FE1. The window has a window column run length Y ₁ = 40 pixels and a column number of about 120, which is stored as a window column variable T ₁ . If, for this purpose, the window start address Z ₁ is stored as the destination address, the position of the window FE1 in the binary pixel image can be reconstructed at any time.

Binary data converted from the registers 100, 200 are read bit by bit into the volatile pixel memory RAM 7c, each bit being assigned an address. If the hexadecimal number loaded in the register is a detected control character "F2", the window characteristic value Z _j for an initial address of the window of No. j = 2 is determined for a total of n windows. With this, window data can later be reinserted into the frame data at this point marked by the address. It is the window column run _length Y _j <R total run length of the print column. By adding R, the new address can be generated in the same row but in the next column.

Figure 9a shows the decoding of the control codes, decompression and loading of the fixed frame data as well as the formation and storage of the window characteristics. With the consideration of the production of very high-resolution prints, a control code "color change" was taken into account. Therefore, in a first sub-step 4310, a color flip-flop 1 is to be reset to f: = 0. The source address H _i for finding the frame data is initially H _i : = H _i -1 and the destination address Z: = Z ₀ .

For the type 1 window data, in sub-step 4311, the window column variable T _j : = 0, for j = 1 to n window and for the type 2 window data, the window column variable T _k : = 0 is set for k = 1 to p window. In sub-step 4312, the source address H _i for frame data is incremented and a color change is made, so that the initial data byte is evaluated, for example, as colored, which later leads to correspondingly activated printing elements.

The above-mentioned byte, which is a run-length-coded hexadecimal number for frame data, is now transferred in sub-step 4313 from the area A _{i of} the non-volatile memory 5 selected accordingly by the cost center KST to a register 100 of the volatile memory 7a. In this case, control characters are detected and a run-length variable X is set back to zero.

In sub-step 4314, a control character "00" for recognized a color change, what after re-branching up Sub-step 4312 results in a color change, i. causes the next run-length encoded hexadecimal number an inactivation of the printing elements according to the Run length. Otherwise, in sub-step 4315 determines if a control character "FF" for picture end is present. If such is detected, the point d achieved according to the figures 5 or 6 and the Step 43 completed.

Otherwise, if in sub-step 4315 such a control character "FF" is not recognized for picture end, it is checked in sub-step 4316 whether there is a control character "FE" for a column end. If such is detected, the color flip-flop 1 is reset in sub-step 4319 and branched to the sub-step 4312, and then in sub-step 4313 to load the byte for the next printing column. If no column end exists, it is determined in sub-step 4317 whether there is a control character for a type 2 window. If such has been recognized, then branching is made to sub-step 4322. Otherwise, it is examined in sub-step 4318 whether there is a control character for type 1 windows. If this is the case, then a point c _{1 is} reached at which a step 43b-shown in FIG. 9b-is carried out.

If sub-step 4318 does not use a control character for Window data of type 1 detected, then lie in bytes called the run length encoded frame data which is decoded in sub-step 4320 and in binary Frame pixel data converted in the pixel memory area I of the pixel memory 7c at the set address Z get saved. In the following sub-step 4321 is according to the number of bits converted the Column run length variable X determines and then the Destination address for the pixel memory area I to this Variable X increased. This is a point b reached and to call a new byte will be back on the Sub-step 4312 branches back.

In sub-step 4322, if there is a control character for type 2 window data, the executed storage of window characteristics T _{k is} determined. If a window characteristic value, in this case the window column running variable T _{k, is} still at the initial value zero, the window start address Z _k corresponding to the address Z is determined in a sub-step 4323 and stored in the volatile main memory 7 b. Otherwise, a branch is made to a sub-step 4324. The sub-step 4323 is also followed by the sub-step 4324, in which the window characteristic value of the window column variable T _{k is} incremented. In the subsequent sub-step 4325, the previous window column variable T _k stored in the volatile main memory 7 b is overwritten with the current value, and the point b is reached.

The window characteristics are so for k = 1 to p window, in particular FE6 possibly FE10 or FE8 loaded. After that is branched back to the sub-step 4312 in order to Sub-step 4313 to load a new byte. The from the hexadecimal data converted bits (dot = 1) ie in step 43a shown in FIG. 9a byte by byte in the pixel memory area I of the volatile Pixel memory 7c taken and consecutively as Binary data stored.

FIG. 9b shows the embedding of decompressed current window data of type 1 in the decompressed frame data after the start of the franking machine or after the editing of frame data. Provided that a control character for type 1 window has been detected in sub-step 4318, the point c _{1 is reached,} and thus the beginning of step 43b.

In sub-step 4330, the executed storage of window parameters T _{j is} determined. If a window characteristic value, in this case the window column running variable T _{j, is} still at the initial value zero, the window start address Z _j corresponding to the address Z is determined in a sub-step 4331 and stored in the volatile main memory 7 b. Otherwise, a branch is made to a sub-step 4332. The sub-step 4331 is also followed by the sub-step 4332, in which the window characteristic of the window column run length Y _j and the window column run length variable Wj to zero, and the window source address U _j to the initial value U _oj - 1 and the second color flip-flop for windows on " do not print in color ".

In the subsequent sub-step 4333, the previous window source address U _{j is} incremented and a color change is performed, so that any window bytes loaded in the following sub-step 4334 are evaluated as colored, which subsequently leads, during the printing, to activated printing elements.

In sub-step 4334, one byte from the sub-memory areas B _j in the non-volatile main memory 5 is loaded into register 200 of the volatile main memory 7 a, thereby detecting for control characters.

In sub-step 4335, the window column run length Y _j is incremented by the value of the window column run-length variable W _j . In sub-step 4336 it is determined whether there is a control character "00" for color change. If such has been detected, the program branches back to sub-step 4333. Otherwise, it is examined in sub-step 4337 whether there is a control character "FE" for the end of the column. If this is not the case, window data is available. Thus, in a sub-step 4338, the content of the register 200 is decoded with the aid of the character memory 9 and the binary window pixel data corresponding to that byte is stored in the pixel memory area I of the pixel memory 7c.

The window column run length variable W _j is then determined in a sub-step 4339 to increment the address Z to the value of variable W _j. Thus, the new address is available for a new byte of the record to be converted and it is branched back to the sub-step 4333, in which also the new source address for a byte of the record for window FEj is generated.

Was in sub-step 4337, a control character "FE" detected for a column end, a branch is made to sub-step 4340, in which increments the window column variable T _j and the volatile memory 7b saved window column variable T _j, and the window column run length Y _j with the current value is overwritten be. Subsequently, a color change is performed in the sub-step 4341 and the point b is reached.

Thus, the step 43b is completed and new Frame data could be translated in step 43a, if a next window is not recognized or the Point d has been reached.

In Fig. 9c, the embedding of decompressed variable window data of type 1 into the decompressed frame data after the editing of this type 1 window data is illustrated. As already shown, pixel memory data and window characteristics have already been stored prior to the beginning of step 54.
Sub-step 5440 begins by determining the number n 'of windows for which the data has been changed and determining the associated window start address Z _j and window column variable T _j for each window F Ej. In addition, a window count variable q is set equal to zero.

In sub-step 5441 it is determined whether the value of the window count variable q has already reached the value of the window change number n '. At zero changes, ie n '= 0, the comparison is positive and the point d is reached. Otherwise, the system branches to sub-step 5442, wherein for a first window FEj whose data has been changed, the window start address Z _j and the window column variable T _{j are taken} from the volatile main memory 6b. In addition, the source address U _{j is set} to an initial value U _oj -1, the destination address Z _{j used} to address the pixel memory area I, a window column counter P _j and the second color flip-flop set back to the initial value zero.

In the subsequent sub-step 5443, the source address is incremented and a color change is performed before the sub-step 5444 is reached. In sub-step 5444, a byte of the changed data set in nonvolatile memory is called and transferred to register 200 of volatile memory 7a, detecting control characters. In the case of a control character "00" for color change, branching back to sub-step 5443 takes place in sub-step 5445. Otherwise, a branch is made to sub-step 5446 to search for control characters "FE" for a column end. However, if such a control character is not present, the content of the register 200 can be decoded in the following sub-step 5447 with the assistance of the character memory 9 and converted into binary pixel data for the window to be changed. These now replace the previous pixel data stored in the region I of the pixel memory 7c from the point predetermined by the window start address Z _j . The bits converted thereby are counted as window run length variable W _j , with which in sub-step 5448 the destination address V _{j is} incremented. Subsequently, a branch is made back to sub-step 5443 in order to load the next byte in sub-step 5444.

If, however, a control character "FE" for the end of the column is detected in the sub-step 5446, the program branches to the sub-step 5449, in which the window column counter P _{j is} incremented.

In sub-step 5450 it is examined whether the window characteristic value for the associated window column variable T _{j is} reached by the window column counter P _j . Then, for a first changed window, all change data would be loaded into the pixel memory area I and branched back to sub-step 5453 and from there to sub-step 5441 to transfer change data to the pixel memory area I for a possibly second window. In sub-step 5453, the window count variable q is incremented for this purpose and the subsequent window start address Z _{j + 1} and the following window column variable T _{j + 1 are} determined.

Otherwise, if in sub-step 5450 the window column variable T _j has not yet been reached by the window column counter P _j , then the sub-steps 5451 and 5452 branch back to sub-step 5443 to overwrite another window column in the pixel memory area until the old binary window pixel memory data is replaced by the new one have been completely replaced. In sub-step 5451, for this purpose, the destination address for the data in the pixel memory area I is incremented by the frame total column length R. The destination address V _j is thus set to the next column for binary pixel data of the window in the pixel memory area I. In sub-step 5452, the color flip-flop is reset to zero to begin conversion with pixel data evaluated as colored. If no further new input is determined in step 44, the formation of new coded window data of type 2 for a marking image, in particular according to a first variant with a step 45a, can now take place in step 45.

Step 45 includes further sub-steps, shown in Figure 10, for forming new coded type 2 window data for a marker image.
While decompressed binary pixel data are already present in the pixel memory area I, after step 44 in step 45 the output data for the data records containing the compressed data are again required for the windows FEj and possibly for the frame data to generate new coded window data of type 2 for a Make markup symbol array. The individual output data (or input data) are stored in accordance with the respective quantities G _w in the memory areas T _w as a BCD-packed number. In addition to the non-volatile data records stored in the sub-memory areas A _i and B _j, the data for a data record for window FEk of type 2 are now assembled in several steps and stored non-volatilely in a sub-memory area B _k .

a) Generierung einer Kombinationszahl KOZ1, wobei eine stetig monoton veränderbare Größe G4 zur Bildung von ersten zusammenhängenden Stellen und mindestens eine das Postgut charakterisierende weitere Größe G3 zur Bildung von zweiten zusammenhängenden Stellen der Kombinationszahl KOZ1 zur Verfügung gestellt werden,

b) Verschlüsselung der Kombinationszahl KOZ1 zu einer Kryptozahl KRZ1,

c) Umsetzen der Kryptozahl KRZ1 in mindestens eine Markierungssymbolreihe MSR1 anhand eines Satzes SSY1 an Symbolen.

The method for rapidly generating a security impression comprises, after providing sizes, a sub-step 45a performed by the microprocessor of the postage meter controller 6 before a print request (step 47), comprising the sub-steps:

a) generation of a combination number KOZ1, wherein a continuously monotone variable G4 for the formation of first contiguous positions and at least one characterizing the mail further size G3 are provided for forming second contiguous positions of the combination number KOZ1,

b) encryption of the combination number KOZ1 to a crypto number KRZ1,

c) converting the crypto number KRZ1 into at least one marker symbol series MSR1 based on a set of symbols SSY1.

In a first variant 1, a marking symbol series are generated in a step 45a. Preferably, due to the amount of information by the sizes G0 to G5, which are only partially to be printed unencrypted open in franking machine stamp image, at least part of the sizes are used in the franking machine to form a single number combination (sub-step 451) a single crypto-number is encrypted (sub-step 452) and then converted into a mark to be printed on the mail (sub-step 453). The storage of the data record to be generated for the marking in a window FE6 can take place in a concluding sub-step 454. Then the point c _{3 is} reached. As a result of this first variant carried out in sub-step 45a, the time otherwise required in the franking machine for generating further crypto-numbers can be saved.

It is provided that the continuously monotone variable G _{w is} at least one ascending or descending machine parameter, in particular a time count or its complement during the service life of the franking machine.

It is advantageous if a machine parameter is time dependent, especially if he is the one decreasing battery voltage of the battery-backed Memory characterizing size G4a and a second steadily monotonically decreasing size G4b or the respective Complement sizes G4a and G4b.

It is further provided in a variant that the second steadily decreasing size G4b the complement the quantity or a steadily monotonically decreasing is time-dependent size.

It is provided on the one hand in a variant that the continuously monotonically decreasing size is a numerical value according to the next inspection date (INS) and is a steadily monotonically decreasing time-dependent quantity.

On the other hand, it is envisaged that a continuous monotonous ascending size the date or the last one Inspection determined quantity included.

It is advantageous, as already explained in more detail, if to the formation of third contiguous bodies the combination number KOZ1 is part of the user of the Franking machine characterizing size G0, G1 of the control device 6 is provided.

Preferably, the upper 10 digits of the combination number KOZ1 for the TIME data (size G4) and the lower 4 digits for the post value (size G3) are provided in the sub-step 451 from the memory areas T _w . This results in a combination number with 14 digits, which would then be encrypted. When using the DES algorithm, a maximum of 8 bytes, ie 16 digits, can be encrypted at once. Thus, the combination number KOZ1 can be supplemented in the direction of the lower digits, if necessary, by a further size. For example, the supplementary part may be part of the serial number SN or the number WRN of the advertising frame or the byte selected from the record of the advertising frame in dependence on another size.

This combination number KOZ1 can be found in sub-step 452 in FIG encoded for about 210 ms into a crypto KRZ1 Here are a number of others in itself Expire known steps. After that is in the sub-step 453 the crypto KRZ1 based on a predetermined in the memory areas M of the nonvolatile random access memory 5 saved marking list in one to convert the corresponding symbol series. Here can especially those which are so advantageous in the later imprint, increased information density can be achieved.

Even if a - shown in the figure 3f - sentence with 10 symbols, i. without an increase in information density compared to the crypto KRZ1 is used, but two rows of marks (next to, or below each other) could be printed, more symbols remain, with which further information be displayed unencrypted or encrypted could. Preferably this is then Information that does not change or hardly changes, and only once encrypted and converted into a series of symbols will need. These are preferably the size G5, i. Inspection data (INS), for example the date of the last inspection or the rest the serial number SN or SN and the byte of the Record of Werbeklischeer framework, which in the first combination number KOZ1 was not included, or selected predetermined parts thereof. In the figure 3c are arranged in - here othogonal to each other - Windows FE6 and FE10 each one row together with 20 symbols shown, with which, for example, the total 8 bytes, i. 16 digits, the crypto KRZ1 and further information may be unencrypted or up other ways are encrypted.

A second variant with a step 45b in addition to step 45a differs from the first variant by other but equally to be considered Output or input variables. In the second variant become one after the other in two steps 45b and 45a Mark series, wherein step 45b is carried out analogously to step 45a.

In a first sub-step 450 of the Control device 6 performed step 45 tested whether a flag has been set to carry out of sub-steps 45b and / or 45a, in sub-step 45b one at least the other Part of the users of the franking machine characterizing Size G0, G1 having second combination number KOZ2 formed, then to a second crypto KRZ2 encrypted and then into at least one second marker symbol series MSR2 based on a second Set of SSY2 is converted to symbols.

In sub-step 455, 451 is compared with the sub-step a combination number KOZ2 formed, in which case in particular the sizes for remaining parts of the serial number, for advertising clichés (frame) number, etc. Enter sizes can. In sub-step 456, as in sub-step 452 a crypto-number KOZ2 formed. In sub-step 457 then the transformation into one takes place again Marker string, which is sub-step 458 is cached non-volatile.

Subsequently, sub-step 45a comprising sub-steps 451 to 453 takes place. This may optionally be connected by a sub-step 454. Subsequently, the point c _{3 is} reached.

In spite of two applications of the DES algorithm, so far nevertheless a time saving on, since in a first sub-step 450 an evaluation whether the selected, for the formation of the Marker string required in substep 45b Sizes, have been changed by an input are. When re-entering selected special Sizes, a flag would be set at step 44 and at a subsequent formation of data for a new one Marker icon row to be considered here to complete step 45b. Is not that the Case, then can on already educated earlier and in stored in a memory area 458 non-volatile present marker symbol series or parts of the Marking symbol series are used.

In an embodiment variant, a sub-step 456 is entered different encryption algorithm than the DES for Time saved used.

In an advantageous embodiment variant is in Sub-step 453 of the first variant or in the sub-step 457 of the second variant of a transformation to additional increase in the density of information Marking symbol series opposite to the crypto number KRZ1 or KRZ2 made. For example, at a 16 digit crypto number now a set of 22 symbols used to transfer the information using only 12 digit - in the manner shown in the figure 3b - depict. For two cryptos, there is the marker symbol row shown there to double. This can be done by means of a the - shown in Figure 3b - mark symbol series parallel further marker symbol series happen.

Accordingly, it can be further shown that for a Marker symbol string of 14 digits only one 14 symbols required symbol set is required. The already previously described test in the postal authority of such pieces of markers having mailpieces can therefore - after the second evaluation variant - by an inverse transformation of the marker symbol series in crypto KRZ1 possibly KRZ2, whose subsequent decryption to combination numbers KOZ1 possibly KOZ2, whose individual sizes with those on the Mail in franking franked sizes be compared done.

A marker symbol row - as shown in FIG. 3a has been shown - is designed for 10 digits and can map a crypto KRZ1 if the symbol set 40 symbols. Here is a fully automated Input and evaluation - even subjective errors of the To avoid examiner in recognizing the symbols meaningful.

In a step subsequent to step 45 then the data of a record for the Marker symbol series after decompression in embedded the remaining pixel data. For that are According to the invention in particular two different ways intended. The one possibility is based on the FIG. 11 shows another with reference to FIG explained.

In FIG. 11, step 46 of FIG. 5 is explained in particular. In a sub-step 4660, window characteristics Z _k and T _{k are} specified for changed window data, the window change number p 'is determined, and a window count variable q is set equal to zero. In a sub-step 4661 it is evaluated whether window count variable q is equal to the window change number p '. Then the point d ₃ and thus the next step 47 would already be reached. However, this path is not regularly entered at the beginning because the monotonically increasing size constantly generates new marker symbol rows for each impression.

Otherwise, if a change has occurred, it will open Sub-step 4662 branches to window characteristics according to the changed windows and to enter To set initial conditions.

In a sub-step 4663, a new source address for the data of the record of the currently processed window FEk is generated to load in the next sub-step 4664 a byte of the coded window data of type 2 from the memory area B _k in registers of the nonvolatile memory 7a and to detect control characters ,

In a sub-step 4665, the window column run length Y _k is then incremented by the window column run length variable W _k , which is still zero. Thereafter, control characters for color changes are examined (sub-step 4666) and, if necessary, branched back to sub-step 4663 or searched for control characters column end (sub-step 4667). If successful, the sub-step 4669 is branched and the window column counter P _{k is} incremented. Otherwise, in the next sub-step 4668, a decoding of the control code and a conversion of the called byte into decompressed binary window pixel data of type 2 is to be carried out.

Sub-step 4670 then checks whether all columns of the window have been processed. If this is the case, a branch is made to the sub-step 4671 and the column run length Y _{k of} the window FEk is stored in the memory 7b and branched back to the sub-step 4673. If it is detected in sub-step 4670 that not all the columns have yet been processed, branching back to sub-step 4663 via sub-step 4672, whereby the window characteristic value Y _k and the color flip-flop are set back to zero. In the next sub-step 4668, a decoding of the control code and an implementation of the called byte into decompressed binary window pixel data of type 2 may then be carried out again.

After sub-step 4673, where the parameters of the next changed window are called, the program branches back to sub-step 4661. When processing all change windows, the point d _{3 is} reached.

The printing routine shown in FIG. 12 for the Composing data from the pixel memory areas I and II expire when in step 47 a Print request is detected and data in a - in 5 not shown - Sub-step 471 loaded have been.

In sub-step 471, the end address Z _{end is} loaded, the current address Z (run variable) to the value of the source address Z ₀ in the area I of the pixel memory 7c, the window column counter P _k to the respective value corresponding to the stored window column variable T _k , the window bit count lengths X _k is set to the respective value corresponding to the stored window column run length Y _k , and the destination addresses Z _K for k = p windows and the total run length R are loaded for a print column s _k . The pressure column has N pressure elemnt.

Subsequently, with the reaching of the point e ₁ at the beginning of the step 48, several sub-steps take place. Thus, first in a sub-step 481, the register 15 of the printer controller 14 is serially loaded bit by bit from the area I of the pixel memory 7c with binary print gap data called with the address Z and the window counter h is set to a number which is the number of windows increased by one p corresponds. In sub-step 482, a window counter h is decremented, which successively outputs window numbers k, whereupon in sub-step 483 the address Z reached in the pixel memory is compared with the window start address Z _{k of} the window FE _k . If the comparison is positive and a window start address is reached, the process branches to sub-step 489, which in turn consists of sub-steps 4891 to 4895. Otherwise, a branch is made to sub-step 484.

In sub-step 4891, a first bit from region II of pixel memory 7c for window FE _k is serially loaded into register 15, the sub-step 4892 increments address Z and bit count variable 1 and decrements window bit count X _k . In a sub-step 4893, if not all bits corresponding to the window column run length Y _{k have been} loaded, further bits are loaded from area II. Otherwise, a branch is made to the sub-step 4894, wherein the window start address Z _k for the addressing of the next window column is increased by the total length R and the window column counter P _{k is} decremented accordingly. At the same time, the original window bit count length X _k corresponding to the window column run length Y _{k is} restored.

Sub-step 4895 then checks whether all window columns have been processed. If this is the case, then the starting address Z _k for the corresponding window FE _{k is set} to zero or an address which lies outside of the pixel memory area I. Otherwise, and after the sub-step 4896, a branch is made to the point e ₁ .

In sub-step 484 it is checked whether all window start addresses have been queried. If that is done, then is branched to the sub-step 485 to the current Increment address Z. Has not happened yet? is branched back to the sub-step 481 to the To continue to decrement window counter h until the next window start address is found or until in sub-step 484, the window counter h becomes zero.

In sub-step 486 it is checked whether all data for the column s _k to be printed in register 15 is loaded. If this is not yet the case, the bit count variable 1 is incremented in the sub-step 488 to return to the point e ₁ and then (in the sub-step 481) to load the next bit addressed by the address Z from the pixel memory area into the register 15.

If the register 15 is full, then the column is printed out in sub-step 487. Thereafter, in a step 50 already shown in FIG. 5, it is determined whether all the pixel data of the pixel memory areas I and II have been printed out, that is, the mail piece has been franked. If that is the case, then the point f _{1 is} reached. Otherwise, branching is made to the sub-step 501 and the bit-count variable 1 is reset to zero, and then branched back to the point e ₁ . Now the next pressure column can be created.

The print routine for composing data taken from only one pixel memory area I and work memory areas will be explained in more detail with reference to FIG. After pressure request, which is detected in the step 47 shown in FIG. 6, a sub-step 471 immediately takes place, as already explained in connection with FIG. 12, in order to reach the point e ₂ . The now beginning - already shown in Figure 6 - step 49, comprising the sub-steps 491 to 497 and the sub-steps 4990 to 4999th The sub-steps 491 to 497 run with the same result in the same order as the sub-steps 481 to 487, the have already been explained in connection with FIG. Only in the sub-step 493 is the sub-step 4990 branched to reset a color flip-flop to g: = 0, whereupon the already explained in connection with Figure 6 process of printing column-wise decompression of the coded window data type 2 with the sub-step 4991 initiated becomes. Here, an already explained in connection with the figure 7 - color change in the evaluation of the converted window pixel data of type 2, so that the first hexadecimal data of the retrieved record are evaluated, for example, as colored. The source address is incremented. Then loading the compressed window data for the window FE carried _k of type 2, in particular for the marking data from the (in the corresponding sub-memory B _j stored) predetermined data set in the register 200 of the volatile memory 7a in sub-step 4992nd A hexadecimal "QQ "corresponds to one byte.

In this case also the control codes are detected. If a window column is to be printed which starts with non-colored pixels, that is to say not to be printed, a control code "color change" would have come first in the data record at this point. Thus, in sub-step 4993, sub-step 4991 is withheld to perform the color change. Otherwise, the system branches to sub-step 4994. In sub-step 4994 it is determined whether a control code "column end" exists. If this is not the case, then the register contents must be decoded and decompressed. For each run-length-coded hexadecimal numerical value, the character memory (CSP) 9 contains a series of binary pixel data which can be correspondingly retrieved on the basis of the hexadecimal number loaded in the volatile main memory 7a. This is done in sub-step 4995, and then the decompressed window pixel data for a column of windows FE _j of type 2 are loaded serially into the print register 15 of the printer controller 14.

In sub-step 4996, the address is then incremented and a corresponding next hexadecimal number is selected in the data set stored in non-volatile random access memory 5 in sub-area B ₅ , as well as the bits converted in the decoding of the run-length encoding to form a window column run-length variable W _j with which the destination address is incremented. Thus, the new destination address for the reading is generated. and it may be branched back to sub-step 4991.

When the end of the column has been reached, sub-steps 4997 to 4999 follow, and then branch back to point e ₂ . Sub-steps 4998 and 4999 are similar to sub-steps 4895 and 4894 shown in Figure 12.

In sub-step 497, the ready loaded Print column printed. Sub-steps 491 to 497 run similar to the one shown in FIG. Sub-steps 481-487.

In addition to a lower mechanical complexity results a high printing speed at a variety in to embed a stored solid print image variable print image data.

In particular, the advantageous variants are closer but with a faster one Hardware is quite possible, the order of Modify procedural steps, as well as a safety footprint to produce quickly.

Will in step 47 when a print request has been made on the a print routine including step 48 and in the case of a print request that has not yet been completed in waiting for the print request, by - in the manner shown in Figures 5 and 6 - on the beginning of step 47 is decreased directly, the invention has a further temporal Advantage, since not permanently new the DES algorithm is generated. The next detectable time after a generation of the marker symbol series already trigger the pressure. Nevertheless, as mentioned, also other back branches possible.

Likewise, in another variant, the step 45 be placed between steps 53 and 54. In the Step 45 subsequent step 54 then becomes Data of a record for the mark symbol series after its decompression into the remaining pixel data of the pixel memory area I embedded. Another Pixel memory area is then not required.

Another opposite variant saves in Pixel storage area only the frame pixel data and Bets all window pixel data into the same Pressure register 15 corresponding columns read without intervening a pixel memory for Window data is needed.

In a variant, without the automatic editing of cliche text parts, the memory area A _{i can be} dispensed with. Instead, the invariable image information is stored in a read-only memory, eg in the program memory (ROM) 11. In the decoding of the invariable image information, this read-only memory 11 is accessed, so that the intermediate storage can be dispensed with.

The invention is not limited to the present embodiment limited.

Claims (6)

1. A method for checking security prints on postal items by means of a graphical character string, comprising the visual scanning of the serial number, of the postage value and of graphical symbols applied as a marking as well as their entry by input means (25), characterized by the steps of

   entry of the scanned graphical symbols successively via input means (25) in order to convert the marking printed on the postal item back into at least one crypto-number (KRZ1);

   start of an automatic analysis in the computer (26) of an analysis means (23) and comparison of the comparative crypto-numbers (VKRZ1) formed from the printed plain values with the first crypto-number (KRZ1) and signalization of the result of comparison.
2. A method according to claim 1, characterized in that, upon scanning, the graphical symbols printed on a postal item are entered automatically by means of a suitable reading device (24).
3. A method according to any of claims 1 to 2, characterized in that the scanning of the graphical character string is connected with the reading of a reference field for pre-synchronization and for obtaining a reference value for the light/dark threshold in an analysis by machine.
4. A method according to claim 3, characterized in that part of a frame of the postage stamp serves as reference field.
5. A method according to claim 1, characterized in that, upon visual scanning of the graphical symbols, their entry is effected via the input means (25) provided with respectively marked function keys.
6. A method according to any of claims 1 to 5, characterized in that the automatic analysis of the graphical character string is made by interaction of the analysis means (23) with a data center (21).

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