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DE19625043C1 - Method of separating items for mailing distribution - Google Patents

Method of separating items for mailing distribution

Info

Publication number
DE19625043C1
DE19625043C1 DE19625043A DE19625043A DE19625043C1 DE 19625043 C1 DE19625043 C1 DE 19625043C1 DE 19625043 A DE19625043 A DE 19625043A DE 19625043 A DE19625043 A DE 19625043A DE 19625043 C1 DE19625043 C1 DE 19625043C1
Authority
DE
Germany
Prior art keywords
overlap
probability
overlaps
consignment
shipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE19625043A
Other languages
German (de)
Inventor
Stefan Werner Dipl Ing Neumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
AEG Electrocom GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AEG Electrocom GmbH filed Critical AEG Electrocom GmbH
Priority to DE19625043A priority Critical patent/DE19625043C1/en
Application granted granted Critical
Publication of DE19625043C1 publication Critical patent/DE19625043C1/en
Priority to EP97108422A priority patent/EP0813912A3/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C1/00—Measures preceding sorting according to destination
    • B07C1/02—Forming articles into a stream; Arranging articles in a stream, e.g. spacing, orientating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/02—Function indicators indicating an entity which is controlled, adjusted or changed by a control process, i.e. output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/15—Height, e.g. of stack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/524—Multiple articles, e.g. double feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/23—Recording or storing data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/24—Calculating methods; Mathematic models

Landscapes

  • Sorting Of Articles (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

In a mail distribution assembly, the items for a mailing are taken separately from a stack, or stacks for collation. Any overlap is detected by a number of different measurements for each take-off to give an overlapping index for given measured values. Each established index is assigned to a probability (P mu i) for an overlap which has been set by a statistical study of a large number of representative test mailings. The total probability (P) for an overlapping is taken from the separate indices and their associated probabilities according to the following relationship: P=1-((1-P( mu 1)e1)(1-P( mu 2)e2)...(1-P( mu n)en)). Any overlapping is indicated on exceeding a selected threshold probability (Pg).

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Ermittlung von Überlappungen nach dem Oberbegriff des Patentanspruches 1.The present invention relates to a method for determining overlaps according to the preamble of claim 1.

In Sendungsverteilanlagen kommt es immer wieder vor, daß die zu verarbeitenden flachen Sendungen nicht einzeln vorliegen, sondern überlappt durch die Sendungsverteilanlage transportiert werden. Diese Überlappung entsteht, wenn statt nur einer Sendung mehrere Sendungen gleichzeitig von der Stoffeingabe abgezogen werden. Man spricht in diesem Fall von einem Doppel- oder Mehrfachabzug. Eine Fehlverteilung ist dann fast unumgänglich. Deshalb müssen diese Überlappungen erkannt werden; um sie anschließend zur Vermeidung der Fehlverteilungen auszuschleusen.It often happens in shipment distribution systems that those to be processed flat programs are not available individually, but overlapped by the Shipment distribution system can be transported. This overlap occurs when instead of just One consignment deducted several consignments from the substance input will. In this case one speaks of a double or multiple deduction. A Misalignment is then almost inevitable. That is why these overlaps be recognized; in order to avoid misdistribution eject.

Nach dem Stand der Technik gibt es verschiedene Lösungen, um Überlappungen zu ermitteln, z. B.According to the prior art, there are various solutions to overlap determine, e.g. B.

  • 1. Erkennen von Überlappungen biegsamer flacher Sendungen durch temporäre Auslenkung bewegbarer Sendungsabschnitte senkrecht zur Förderrichtung und Detektion des Rückschnellverhaltens der Sendungen (DE-43 37 004 A1).1. Detect overlapping of flexible flat mail items by temporary Deflection of movable mail segments perpendicular to the conveying direction and Detection of the flashback behavior of the mail items (DE-43 37 004 A1).
  • 2. Vermessen der Sendungslänge (erstmalig)
    Dabei kann eine als zu lang gemessene Sendung auch eine Überlappung sein (DE-OS 20 28 004).    2. Measure the shipment length (for the first time)
    A program measured as too long can also be an overlap (DE-OS 20 28 004).
  • 3. Vermessung der Sendungslänge (ein zweites Mal)
    Es wird die Differenz zur ersten Längenmessung ausgewertet. Ist die Differenz dieser Längen ungleich Null, so deutet das auf eine Überlappung hin, deren Einzelsendungen sich gegeneinander verschoben haben.    3. Measurement of the shipment length (a second time)
    The difference to the first length measurement is evaluated. If the difference between these lengths is not equal to zero, this indicates an overlap whose individual broadcasts have shifted against each other.
  • 4. Vermessung der Sendungshöhe
    Ein Höhensprung im Meßwert der Sendungsober- und/oder der Sendungsunter­ kante deutet auf eine Überlappung hin.    4. Measurement of the shipment height
    A jump in the measured value of the upper and / or lower edge of the item indicates an overlap.
  • 5. Vermessung der Sendungsdicke
    Ein Sprung im Meßwert der Sendungsdicke deutet auf eine zweite Sendungskante und damit auf eine Überlappung hin.    5. Measuring the consignment thickness
    A jump in the measured value of the consignment thickness indicates a second consignment edge and thus an overlap.
  • 6. Feststellen zweier kurz hintereinander liegender Sendungskanten (DE-AS 12 10 601). 6. Detection of two consecutive consignment edges (DE-AS 12 10 601).  
  • 7. Barcode-Erkennung
    (Nur bei Sendungen, die bereits einen Code tragen anwendbar). Bei Überlappung des Barcodes kann eine Sendungsüberlappung vorliegen.    7. Barcode recognition
    (Applicable only for shipments that already have a code). If the barcode overlaps, there may be a shipment overlap.
  • 8. Identificationscode-Erkennung
    (Nur bei Sendungen, die bereits einen Code tragen anwendbar). Bei Überlappung des Identificationcodes kann eine Sendungsüberlappung vorliegen.    8. Identification code recognition
    (Applicable only for shipments that already have a code). If the identification code overlaps, there may be a shipment overlap.

Jede einzelne dieser Methoden liefert kein 100%-ig sicheres Ergebnis. So kann ein Höhensprung auch durch eine verschobene Sendung hervorgerufen werden. Ein Sprung im Meßwert der Sendungsdicke kann durch eine dicke Sendung erzeugt werden, Adreß- Barcodes oder Identifikationscodes können fehlerhaft aufgedruckt worden sein, so daß trotz Meldung keine Überlappung vorliegt.Each of these methods does not provide a 100% certain result. So one can Jump in height can also be caused by a postponed shipment. A leap in the measured value of the consignment thickness can be generated by a thick consignment, Barcodes or identification codes may have been printed incorrectly, so that there is no overlap despite the message.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Ermittlung von Sendungsüberlappungen zu schaffen, das die Sicherheit bei der Ermittlung von Überlappungen gegenüber den bekannten einzelnen Lösungen erhöht.The present invention is therefore based on the object of a method for Determination of shipment overlaps to create security in the Determination of overlaps compared to the known individual solutions increased.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Hierbei werden alle Informationen genutzt die auf eine Sendungsüberlappung hinweisen. Da die einzelnen Verfahren unterschiedlich sicher auf eine Überlappung hinweisen, wird jedem Verfahren eine vorher statistisch ermittelte Wahrscheinlichkeit zugeordnet.This object is solved by the features of claim 1. Here are uses all information that indicates a shipment overlap. Since the Each method will point out an overlap with certainty to everyone Procedure assigned a previously statistically determined probability.

Das jeweilige Indiz für eine Sendungsüberlappung wird dann über die Wahrscheinlichkeitsrechnung zusammengefaßt. Als Ergebnis ergibt sich ein Wert, der die Wahrscheinlichkeit ausdrückt mit der die Überlappung richtig erkannt wurde. Liegt dieser Wert über einem vorgegebenen Grenzwert, so wird die entsprechende Sendung als Sendungsüberlappung (Mehrfachabzug) behandelt.The respective indication of a shipment overlap is then via the Probability calculation summarized. The result is a value that expresses the probability with which the overlap was correctly recognized. Lies this value is above a predetermined limit, the corresponding shipment treated as a consignment overlap (multiple deduction).

Eine vorteilhafte Ausgestaltung der Erfindung ist im Patentanspruch 2 angegeben. Hierbei wird aufgezeigt wie mittels einer statistischen Auswertung einer größeren Anzahl repräsentativer Testsendungen, die in der Stoffeingabe einer Sendungsverteilanlage vereinzelt wurden, die Wahrscheinlichkeit auf eine Sendungsüberlappung für jedes einzelne Indiz ermittelt wird.An advantageous embodiment of the invention is specified in claim 2. Here it is shown how a statistical evaluation of a larger number representative test consignments in the substance input of a consignment distribution system were singled out, the probability of a shipment overlap for each individual evidence is determined.

In einem Ausführungsbeispiel wird die Erfindung näher erläutert.In one embodiment, the invention is explained in more detail.

Folgende Erkennungsverfahren für Sendungsüberlappungen wurden zur Auswertung herangezogen:The following detection methods for consignment overlaps were used for evaluation used:

  • 1. Vermessung der Sendungslänge µ1
    Eine gegenüber den erwarteten Längen als zu lang gemessene Sendung kann eine Überlappung sein (e₁ = 1).    1. Measurement of the shipment length µ1
    A consignment measured too long compared to the expected lengths can be an overlap (e 1 = 1).
  • 2. Zweimaliges Vermessen der Sendungslänge µ2
    Ist die Differenz zwischen beiden Messungen größer als ein festgelegter Wert, so ist dies ein Hinweis auf eine Überlappung (e₁ = 1).    2. Measure the consignment length µ2 twice
    If the difference between the two measurements is greater than a specified value, this is an indication of an overlap (e 1 = 1).
  • 3. Vermessung der Sendungshöhe µ3
    Höhensprünge im Meßwert und deren Auswertung (Sprunghöhe, Sprungverläufe) der Sendungsober- und/oder der Sendungsunterkante, deuten auf Überlappungen hin (e₁ = 1).    3. Measurement of the shipment height µ3
    Jumps in height in the measured value and their evaluation (jump height, jump courses) of the upper and / or lower edge of the mail item indicate overlaps (e 1 = 1).
  • 4. Vermessung der Sendungsdicke µ4
    Ein Sprung im Meßwert der Sendungsdicke deutet auf eine zweite Sendungskante und damit auf eine Überlappung hin (e₁ = 1).    4. Measuring the consignment thickness µ4
    A jump in the measured value of the consignment thickness indicates a second consignment edge and thus an overlap (e 1 = 1).

Die Werte für die Wahrscheinlichkeiten P (µi) wurden aus einer statistischen Erhebung heraus ermittelt. Jede Meßmethode zur Sendungsüberlappungsfindung wurde auf ihre Erkenntnissicherheit hin untersucht.The values for the probabilities P (µ i ) were determined from a statistical survey. Each measurement method for consignment overlap determination was examined for its reliability of knowledge.

Dazu wurde die Anzahl der erkannten Sendungsüberlappungen nach der jeweiligen Meßmethode µi durch die Anzahl der real auftretenden Überlappungen, die mittels High- Speed-Aufnahmen des Abziehvorganges verifiziert wurden, geteilt. Dies ergab für jede Meßmethode den Kennwert P (µi).For this purpose, the number of overlaps of the consignments identified was divided according to the respective measurement method µ i by the number of overlaps that actually occurred, which were verified by means of high-speed recordings of the peeling process. This gave the characteristic value P (µ i ) for each measurement method.

Das Testdeck bestand aus insgesamt 70.000 Stück Dead-Letter-Mail aus den USA und entsprach bezüglich geometrischer Formate und physikalischer Eigenschaften der mittleren Verteilung der im täglichen Betrieb auftretenden Sendungen. Für jede Meßmethode wurden 10.000 Stück Sendungen ausgewertet.The test deck consisted of a total of 70,000 dead letter mail from the USA and corresponded to the geometric formats and physical properties of the average distribution of the consignments occurring in daily operation. For every The measurement method was used to evaluate 10,000 items.

Die einzelnen Wahrscheinlichkeiten ergaben sich zu:
P(µ₁) 0,12
P (µ₂) 0,78
P (µ₃) 0,82
P (µ₄) 0,35. The individual probabilities were:
P (µ₁) 0.12
P (µ₂) 0.78
P (µ₃) 0.82
P (µ₄) 0.35.

Das bedeutet z. B., daß 78% aller nach der Methode µ₂ gefundenen Überlappungen auch wirklich Überlappungen sind.That means e.g. B. that 78% of all overlaps found by the method µ₂ are really overlaps.

Die Gesamtwahrscheinlichkeit wird nach folgender Beziehung ermittelt:The overall probability is determined according to the following relationship:

P = 1-[(1-P(µ₁)e₁)(1-P(µ₂)e₂)(1-P(µ₃)e₃)(1-P(µ₄)e₄)].P = 1 - [(1-P (µ₁) e₁) (1-P (µ₂) e₂) (1-P (µ₃) e₃) (1-P (µ₄) e₄)].

Das ergibt, wenn nach allen Methoden eine Sendungsüberlappung identifiziert wurde (ei = 1, für 1 < i < 4) einen Maximalwert von 0,977.This results in a consignment overlap identified by all methods (e i = 1, for 1 <i <4) a maximum value of 0.977.

Der Wert der Grenzwahrscheinlichkeit Pg wird z. B. zu 0,4 angesetzt. Das bedeutet, daß eine als Überlappung ausgeschleuste Sendung mit 40% Sicherheit auch wirklich eine Überlappung war. Im beschriebenen Fall wird dieser Wert bereits überschritten, wenn die Ereignisse µ₁ und µ₄ eintreten.The value of the limit probability Pg is e.g. B. set at 0.4. It means that a shipment that is diverted as an overlap with 40% certainty is really one Was overlap. In the case described, this value is already exceeded when the Events µ₁ and µ₄ occur.

Wird eine höhere Erkennungssicherheit gewünscht, müssen mehr Indizien vorliegen. Dies senkt allerdings die Anzahl der ausgeschleusten Sendungen.If a higher level of recognition security is required, more evidence must be available. However, this reduces the number of rejected shipments.

Hier ist es sinnvoll, mit Hilfe von Kostenmodellen den jeweils optimalen Grenzwert zu definieren, da bei einem kleinen Wert für Pg mehr Sendungen als Überlappungen erkannt werden, dies aber mit einer geringen Sicherheit, und bei einem hohen Wert für Pg weniger Sendungen ausgeschleust werden, es sich hierbei jedoch mit hoher Sicherheit um Überlappungen handelt.Here it makes sense to use cost models to find the optimal limit define, since with a small value for Pg more mail items than overlaps can be recognized, but with a low certainty, and with a high value for Pg fewer shipments can be rejected, but this is higher Security is about overlaps.

Claims (2)

1. Verfahren zur Ermittlung von Überlappungen bei der Vereinzelung von Sendungen in einer Sendungsverteilanlage unter Verwendung von n unterschiedlichen Messungen zu jedem Abzug, die jeweils bei bestimmten Meßwerten ein Indiz für eine Überlappung darstellen,
dadurch gekennzeichnet,
daß jedem ermittelten Indiz eine Wahrscheinlichkeit (Pµi) für eine Überlappung zugeordnet wird, die vorher in einer statistischen Erhebung anhand einer größeren Menge von repräsentativen Testsendungen ermittelt wurde,
daß eine Gesamtwahrscheinlichkeit P für eine Überlappung aus den Einzelindizien und deren zugehörigen Wahrscheinlichkeiten nach der Beziehung P=1-[(1-P(µ₁)e₁)(1-P(µ₂) e₂) . . . (1-P(µn)en)]ermittelt wird, und
daß bei Überschreiten einer gewählten Grenzwahrscheinlichkeit Pg eine Überlappung gemeldet wird, 1. Method for determining overlaps when separating mail items in a mailing distribution system using n different measurements for each deduction, each of which is an indication of an overlap for certain measured values,
characterized,
that each identified indicator is assigned a probability (Pµ i ) for an overlap that was previously determined in a statistical survey using a larger number of representative test items,
that an overall probability P for an overlap from the individual indicators and their associated probabilities according to the relationship P = 1 - [(1-P (µ₁) e₁) (1-P (µ₂) e₂). . . (1-P (µ n ) e n )] is determined, and
that an overlap is reported when a selected limit probability Pg is exceeded, 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Ermittlung der Wahrscheinlichkeit der Einzelindizien die größere Menge von repräsentativen Testsendungen vereinzelt wird, die Doppelabzüge mit einer Hochgeschwindigkeitskamera ermittelt und gezählt werden und die über jedes Indiz gezählten Überlappungen ins Verhältnis zur wirklichen Anzahl der Überlappungen gesetzt werden.2. The method according to claim 1, characterized, that to determine the probability of the individual indicators, the larger amount of representative test shipments, the double deductions with a High-speed camera can be determined and counted and that over every indication overlaps counted in relation to the actual number of overlaps be set.
DE19625043A 1996-06-22 1996-06-22 Method of separating items for mailing distribution Expired - Fee Related DE19625043C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19625043A DE19625043C1 (en) 1996-06-22 1996-06-22 Method of separating items for mailing distribution
EP97108422A EP0813912A3 (en) 1996-06-22 1997-05-24 Method for determining overlapping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19625043A DE19625043C1 (en) 1996-06-22 1996-06-22 Method of separating items for mailing distribution

Publications (1)

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DE19625043C1 true DE19625043C1 (en) 1997-04-10

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DE19625043A Expired - Fee Related DE19625043C1 (en) 1996-06-22 1996-06-22 Method of separating items for mailing distribution

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2841487A1 (en) * 2002-06-26 2004-01-02 Solystic METHOD FOR DETECTING SINGLE PLIERS AND MULTIPLE PLUG PLUGS IN A POSTAL SORTING FACILITY
EP1619152A1 (en) * 2004-07-22 2006-01-25 Solystic Method for identifying overlapping mailings
WO2007042093A1 (en) * 2005-10-12 2007-04-19 Siemens Aktiengesellschaft Apparatus for, and method of, sorting flat objects, in particular mail in the form of letters

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DE4337004A1 (en) * 1993-10-29 1995-05-04 Licentia Gmbh Device and method for detecting overlaps of flexible flat mail items

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Publication number Priority date Publication date Assignee Title
DE1210601B (en) * 1960-08-15 1966-02-10 Standard Elektrik Lorenz Ag Photoelectric control device to recognize double draws
DE2028004A1 (en) * 1970-06-08 1971-12-16 Deutsche Bundespost Letter distribution system
DE4337004A1 (en) * 1993-10-29 1995-05-04 Licentia Gmbh Device and method for detecting overlaps of flexible flat mail items

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2841487A1 (en) * 2002-06-26 2004-01-02 Solystic METHOD FOR DETECTING SINGLE PLIERS AND MULTIPLE PLUG PLUGS IN A POSTAL SORTING FACILITY
WO2004002637A1 (en) * 2002-06-26 2004-01-08 Solystic Method for detecting single postal covers and postal covers stuck together in a mail sorting machine
US7446278B2 (en) 2002-06-26 2008-11-04 Solystic Method for detecting single postal covers and postal covers stuck together in a mail sorting machine
EP1619152A1 (en) * 2004-07-22 2006-01-25 Solystic Method for identifying overlapping mailings
FR2873361A1 (en) * 2004-07-22 2006-01-27 Solystic Sa METHOD FOR IDENTIFYING MULTIPLE INPUT SENDS
US7482549B2 (en) 2004-07-22 2009-01-27 Solystic Method of identifying overlapping articles
WO2007042093A1 (en) * 2005-10-12 2007-04-19 Siemens Aktiengesellschaft Apparatus for, and method of, sorting flat objects, in particular mail in the form of letters
US7629602B2 (en) 2005-10-12 2009-12-08 Siemens Aktiengesellschaft Apparatus and method for detecting overlapping flat objects with a doubles detector and electronic images of first and second flat sides of an object

Also Published As

Publication number Publication date
EP0813912A3 (en) 1999-01-20
EP0813912A2 (en) 1997-12-29

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