Error Checking Patents (Class 235/437)
  • Patent number: 6199755
    Abstract: A machine data acquisition system connected to a machine, for acquiring data on an internal status of the machine, and for use with an IC card having storage. The machine data acquisition system comprises an IC card accepting device which accepts the IC card, a machine data acquisition device which acquires data on the internal status of the connected machine, and a card writer which writes data acquired by the machine data acquisition device into the storage in the IC card.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: March 13, 2001
    Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.
    Inventors: Kenji Matsumoto, Shigeyuki Itoh, Yutaka Takami, Masayuki Inoue, Koichi Yoneta, Tetsuharu Inamitsu
  • Patent number: 6148121
    Abstract: In a system for printing and recording multimedia information on an information recording medium in the form of an optically readable code pattern, reading the code pattern and restoring the original multimedia information, the code pattern of the information recording medium includes processing information necessary for editing and processing data according to the restoration processing procedure for restoring the multimedia information. Further, the restoration processing procedure includes a hierarchical structure of layers 1 to 5 and an application process. In the layer 5 and application process, a set specification identifier determining section selects the decoding section, selects the reproducing output section and sets parameters according to the set specification name identifier and SDCH supplied as header information prior to user data of the subset from the layer 4.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: November 14, 2000
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hiroyoshi Fujimori, Shinichi Imade, Shinzo Matsui, Hiroshi Sasaki, Takeshi Mori
  • Patent number: 6145744
    Abstract: A method of the invention reads a bar code based on bar-code data obtained by scanning the bar code with light. The method includes the steps of a) obtaining bar-code data, b) obtaining a sum of bar-data widths with respect to a predetermined number of bar data provided in at least one of a preceding portion and a following portion of the bar-code data, c) repeating the steps a) and b) once to obtain another sum, and d) making a comparison of the sum with another sum. The methods further includes a step of accepting the bar-code data as valid data when a result of the comparison satisfies a predetermined condition.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: November 14, 2000
    Assignee: Fujitsu Limited
    Inventors: Motohiko Itoh, Shinichi Satoh, Mitsuo Watanabe, Hiroaki Kawai, Isao Iwaguchi
  • Patent number: 6106147
    Abstract: An information storage apparatus is disclosed for storing information on inserted cards the apparatus comprising a sensing means for sensing printed patterns on the surface stored on the card, the patterns arranged in a predetermined number of possible active areas of the card; a decoding means for decoding the sensed printed patterns into corresponding data; a printing means for printing dot patterns on the card in at least one of the active areas; a positioning means for positioning the sensed card at known locations relative to the sensing means and the printing means; wherein the sensing means is adapted to sense the printed patterns in a current active printed area of the card, the decoding means is adapted to decode the sensed printed patterns into corresponding current data and, when the current data requires updating, the printing means is adapted to print the updated current data at a new one of the active areas after activation of the positioning means for correctly position the card.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: August 22, 2000
    Assignee: Silverbrook Research PTL Ltd
    Inventor: Kia Silverbrook
  • Patent number: 6070801
    Abstract: Demodulated data B containing the whole of a right block and a part of a left block is obtained after demodulated data A containing a start guard bar and based on a division reading process has been at first obtained. When demodulated data C containing an end guard bar and numerical data of three characters is thereafter obtained, a CPU aligns the demodulated data C with modulus 10-OK data obtained by synthesizing the demodulated data A with the demodulated data B on the basis of the end guard bar, and compares tenth through twelfth characters (of the numerical data) of both of data with each other. As a result of this comparison, if the tenth through twelfth characters (of the numerical data) of both of data are coincident with each other, the CPU increments an identical character counter.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: June 6, 2000
    Assignee: Fujitsu Limited
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Shinichi Sato, Hiroaki Kawai, Motohiko Itoh
  • Patent number: 6065672
    Abstract: A method for currency management and tracking utilizing a unique standardized cassette for the transportation of note bundles and loading of note bundles into currency processing apparatus, the cassette having an accompanying smart card on which data regarding the individual note history of each note contained therein and distributed therefrom is recorded. The invention further provides for the uploading of data stored on cassette smart cards to a central data bank, thus allowing for the management and statistical modeling of the currency pool.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: May 23, 2000
    Assignee: Currency Systems International
    Inventor: Richard Glen Haycock
  • Patent number: 6047892
    Abstract: A electro-optical memory includes a substrate on which is printed (or otherwise inscribed) a complex symbol or "label" or "bar code" of a high density two-dimensional symbology. The bar code contains component symbols or "codewords" which are placed in row and column formation, with a variable number of codewords per row, and a variable number of rows. The symbology utilizes implicit bar code encoding scheme for implicit encoding the number of rows and the number of columns of codewords, as well as a predetermined amount of error correction. The symbology is capable of supporting a fixed number of bar code variants, with each variant having a predetermined number of rows and columns of codewords, and a predetermined error correction capability. For some codewords the implicit encoding scheme is combined with a gray coding scheme to reduce the inter-row codeword crosstalk.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: April 11, 2000
    Assignee: Symbol Technologies, Inc.
    Inventors: Frederick Schuessler, Kevin Hunter, Sundeep Kumar, Cary Chu
  • Patent number: 6039412
    Abstract: The present invention relates to a card (such as a cash card) reject and recovery method, enabling to provide a reduced size of card reading/issuing apparatus capable of identifying an error cause for respective cards. The card issuing apparatus comprises: an embosser for embossing an error identification pattern on a card; an information reader for reading an information of a card; and a controller for determining, according to the information of the card, whether the card has an error. The card recovery method comprises steps of: feeding a card which has been determined to have an error, to the embosser; identifying an error identification pattern; and embossing on a card determined to have an error, a corresponding error identification pattern.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: March 21, 2000
    Assignee: NEC Corporation
    Inventors: Osamu Kazo, Tsuyoshi Kokubo
  • Patent number: 6029144
    Abstract: According to the present invention, a system and method for checking expense entries for compliance with policy rules and detecting the possibility of fraud is provided. The preferred embodiment includes a policy checker comprising a knowledge based system designed to determine expense entries' compliance with policy rules and detect a possibility of fraud. The preferred embodiment also includes an auditor workflow system that works with the policy checker to guide manual audits of those expense entries that are not in compliance with the policy rules. The preferred embodiment also includes a data pattern analyzer that detects patterns of behavior that can be indicative of fraud. The preferred embodiment also includes a prioritizer for ranking detected policy violations. These systems work together to provide an automated system for checking expense entries for compliance with company rules, detecting instances where fraud is likely, and generating the appropriate reports.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: February 22, 2000
    Assignee: International Business Machines Corporation
    Inventors: Merwin John Barrett, Stanley Philip Cason, Karen Marie D'Andria, Michael Wayne Gearing, Keith Ky Trieu Ho, Hope Eleanor Miller, Rosemary DeSantis Paradis, Eric Woisard
  • Patent number: 5999665
    Abstract: In a system for printing and recording multimedia information on an information recording medium in the form of an optically readable code pattern, reading the code pattern and restoring the original multimedia information, the code pattern of the information recording medium includes processing information necessary for editing and processing data according to the restoration processing procedure for restoring the multimedia information. Further, the restoration processing procedure includes a hierarchical structure of layers 1 to 5 and an application process. In the layer 5 and application process, a set specification identifier determining section selects the decoding section, selects the reproducing output section and sets parameters according to the set specification name identifier and SDCH supplied as header information prior to user data of the subset from the layer 4.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: December 7, 1999
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hiroyoshi Fujimori, Shinichi Imade, Shinzo Matsui, Hiroshi Sasaki, Takeshi Mori
  • Patent number: 5920056
    Abstract: An optically-guided indicia reader 10 system including a conveyor 12 carrying a parcel 14 bearing a destination address 20. An illumination source 24 defines a static area 26 to assist the positioning of the parcel 14 on the conveyor 12. A scanner 32 and a computer memory 42 of a character recognition system 40 are operated so as to store an image of a region defined with respect to the moving illuminated area 26. A sensor assembly 28, including a height sensor and reflectivity sensor, is located toward the downstream location of the illumination source 24. The scanner 32 is focused in response to height data from the height sensor, and the gain of the scanner 32 is adjusted in response to reflectivity data from the reflectivity sensor, so that the scanner 32 generates a clear image of the top of the parcel 14 as the parcel 14 passes beneath the scanner 32. A photo sensor 45 is positioned upstream from the scanner 32 to detect the presence of the parcel 14.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: July 6, 1999
    Assignee: United Parcel Service of America, Inc.
    Inventor: Henri Bonnet
  • Patent number: 5898709
    Abstract: An information (transmission) medium (30) has a code pattern printed and recorded thereon, containing processing information necessary to subject data to edit processing in accordance with a reproduction process for reproducing, to original multimedia information, a dot pattern which is read out from the information recording medium. A multimedia paper (MMP) reproduction apparatus (28) as the information reproducing apparatus performs data processing based on the processing information.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: April 27, 1999
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Imade, Yutaka Yunoki, Hiroyoshi Fujimori, Shinzo Matsui, Takeshi Mori, Hiroshi Sasaki
  • Patent number: 5877481
    Abstract: A document dispenser comprises a document guide defining a guide portion of an advancing document path and a document identification code reading aperture formed in the document guide wherein a single detector in communication with the dispenser controller is positioned proximate the document identification code reading aperture and is operative to read a specific document identification code through the document identification code reading aperture. Correlated data, indicative of a specific document identification code and corresponding document data input during dispensing of a document carrying the specific document identification code, is generated subsequent the reading of the identification code. A plurality of alternative document identification code reading apertures are formed in the document guide.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: March 2, 1999
    Assignee: The Standard Register Company
    Inventors: William Virgil Harrison, Lance Edward Kelley, John Henry Stolzenberg
  • Patent number: 5837983
    Abstract: An apparatus and method for monitoring and reporting optical symbol readability and operator and reader performance levels. The apparatus includes a reader for optical symbols which measures and reports the values of measurements with respect to the symbol and events occurring during the reading process indicative of the label readability. The apparatus further comprises data accumulation device including a memory storage to accumulate these measurement values for each set of labels, and a programmed computing system to analyze the measured values and report on the results of the analysis. A preferred method of monitoring and reporting optical symbol readability and operator and reader performance levels includes the steps of reading or attempting to read an optical symbol, performing measurements within the symbol and noting events during the reading process, accumulating these values, analyzing the accumulated data, and producing a report which lists the sets of labels which had readability problems.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: November 17, 1998
    Assignee: PSC, Inc.
    Inventors: Robert J. Actis, Craig D. Cherry, Alan C. Bradley, Donald D. Dieball
  • Patent number: 5835615
    Abstract: A printability gauge which make it possible for an observer by visual inspection of the gauge to determine the degree to which the dimensions of a printed bar code symbol deviate from the dimensions of an ideal bar code symbol defined by bars and spaces whose dimensions are derived from a unit bar of predetermined thickness. The gauge includes a checkerboard pattern whose black and white squares are all of the same size only when the thickness of the unit bar in the printed symbol matches that of the ideal symbol whereby the checkerboard pattern then appears to the observer to be 50 percent gray. Should the unit bar in the printed symbol, as a result of a processing error, be thicker than in the ideal symbol, then the size of the black squares will be correspondingly enlarged at the expense of the white squares, and the checkerboard pattern will then appear to be more than 50 percent gray.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: November 10, 1998
    Assignee: Synex
    Inventors: Allen Lubow, Xinying Gu
  • Patent number: 5811787
    Abstract: A electro-optical memory includes a substrate on which is printed (or otherwise inscribed) a complex symbol or "label" or "bar code" of a high density two-dimensional symbology. The bar code contains component symbols or "codewords" which are placed in row and column formation, with a variable number of codewords per row, and a variable number of rows. The symbology utilizes implicit bar code encoding scheme for implicit encoding the number of rows and the number of columns of codewords, as well as a predetermined amount of error correction. The symbology is capable of supporting a fixed number of bar code variants, with each variant having a predetermined number of rows and columns of codewords, and a predetermined error correction capability. For some codewords the implicit encoding scheme is combined with a gray coding scheme to reduce the inter-row codeword crosstalk.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: September 22, 1998
    Assignee: Symbol Technologies, Inc.
    Inventors: Frederick Schuessler, Kevin Hunter, Sundeep Kumar, Cary Chu
  • Patent number: 5790715
    Abstract: Recorded data is read by an image sensor from a recording medium on which the data is two-dimensionally recorded in a mesh pattern, and the read data is stored in an image RAM. The stored data is subjected to data decoding and error correction to reproduce target data. A scanning reference pattern of a mesh pattern recorded on the recording medium serves as a guide when the stored recorded data read by the image sensor is reproduced by scanning in the image RAM. A reproduction apparatus has a capability of coping with a partial destruction of the scanning reference pattern. Error checking codes are added to the recording medium in addition to the target data. These items of data are recorded as an encoded image after being subjected to scrambling processing and randomization processing. The reproduction apparatus can easily cope with an error when the encoded image is reproduced.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: August 4, 1998
    Assignee: Casio Computer Co., Ltd.
    Inventor: Nobuo Iizuka
  • Patent number: 5777310
    Abstract: A bar code imaging system capable of accurately and efficiently reading a printed bar code that is partially damaged, distorted, or erased. The bar code imaging system comprises an imaging element adapted to receive light reflected from a bar code symbol and provide a two-dimensional image of the bar code symbol. The two-dimensional image is decoded into data representative of the bar code symbol. More particularly, code words in the bar code pattern are decoded along a path beginning at the start of the bar code and moving toward the end of the bar code. As each code word is decoded, the decoded data is stored in a memory. When an invalid code word is encountered, decoding continues along a path beginning at the end of the bar code and moving toward the beginning of the bar code, and the decoded data is stored in the memory with the previously decoded data.
    Type: Grant
    Filed: November 6, 1995
    Date of Patent: July 7, 1998
    Assignee: Intermec Corporation
    Inventors: Lingnan Liu, Mark Yukio Shimizu
  • Patent number: 5760385
    Abstract: A secure monetary system comprises an electronic module and equipment to access the electronic module. The electronic module comprising a substantially token-shaped module and secure memory circuitry to store monetary information. The secure memory positioned in the substantially token-shaped module. The equipment accesses and manipulates the monetary information stored in the memory in the electronic module. The equipment comprises memory to store control and encryption programs and the memory is coupled to a microprocessor, which is also coupled to the electronic module and a control panel. The microprocessor is secure.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: June 2, 1998
    Assignee: Dallas Semiconductor Corporation
    Inventors: Stephen M. Curry, Michael L. Bolan
  • Patent number: 5761219
    Abstract: A method and apparatus is described which provides improved error correction for reading a PDF417 or other machine-readable symbol having a data region with symbol characters representing encoded data. A processor receives the encoded data read from the PDF417 symbol and executes an error correction routine. The error correction routine includes a two dimensional discrete Fourier transform with a reduced number of arithmetic operations. The transform is a variant of the Good-Thomas FFT performed over the Galois field GF(929), and includes a set of first index values i.sub.1 (consisting of all integers from 0 to 28 inclusive) and a second set of index values i.sub.2 (consisting of all integers from 0 to 31 inclusive). For a given first index value, the transform is performed only over a subset of the second index values. The subset of second index values is the first k values of a sequence given by i.sub.1 +29*r, where r=0, 1, 2, . . . , 31, and k is the minimum of values 31 and ?b/29!+1.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: June 2, 1998
    Assignee: Intermec Technologies Corporation
    Inventor: Pavel A. Maltsev
  • Patent number: 5679941
    Abstract: A checkout device including a conveying section for conveying an article in one direction, an optical scanner for scanning the article conveyed by the conveying section with a scanning light beam to read an article code affixed thereto, and a registration processing section for registering the article based on the article code read by the optical scanner. The optical scanner is provided with a variable scanning range to which the scanning light beam is applied, and the registration processing section includes control means for detecting physical features of the article conveyed by the conveying section and for controlling the scanning range of the optical scanner to be optimized for reading the article code affixed to the article based on a conveying position and the detected physical features of the article.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: October 21, 1997
    Assignee: Kabushiki Kaisha TEC
    Inventors: Hitoshi Iizaka, Masahito Sano, Yasuo Matsumoto
  • Patent number: 5644750
    Abstract: A data memory of an IC card is divided into a plurality of areas, a logic type used when data is written in each area is set, and the logical AND between the written data and stored data in the memory is calculated by an AND logic circuit and written in the memory. In read access, output data can be directly obtained from the memory.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: July 1, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasuo Iijima
  • Patent number: 5563393
    Abstract: A business system including at least one transaction terminal such as an automated teller machine ATM (10) and an interface device (12) for use by an operator in carrying out maintenance of the ATM (10) or replenishing consumable items used during its operation. The interface device (12) is separate from the ATM (10) and two-way communication between the interface device (12) and the ATM (10) is arranged to take place in a contactless manner. Preferably communication is enabled by the use of a radio frequency technique. The interface device (12) provides the operator with a sequence of instructions and is arranged to await the receipt of a confirmation signal from the ATM (10) prior to displaying the next instruction in the sequence. The ATM (10) provides the confirmation signal only when a sensor (22-44) within the ATM (10) detects that the previously displayed instruction has been carried out by the operator.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: October 8, 1996
    Assignee: AT&T Global Information Solutions Company
    Inventor: Michael G. Coutts
  • Patent number: 5557095
    Abstract: A scanner communicates with a microcomputer over a serial communications link utilizing the serial I/O port of the microcomputer. Both signals representing the data which is scanned and signals representing commands to the scanner and commands from the scanner indicative of the status thereof (e.g., scanner trigger actuation) are communicated over a plurality of lines in the communication link. These lines may be of the type utilized for transmission of data and commands in accordance with a communications protocol, such as the RS-232 protocol. Interrupts are generated when the scanner is connected to the serial port via the communication link and the microcomputer is available for decoding. Then appropriate interrupts are generated to actuate the scanner and to respond to the data. The scanner may be a laser or optical beam scanner or a wand which is moved across a bar code symbol. The symbol has bars which are relatively opaque and reflective (black or white).
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: September 17, 1996
    Assignee: PSC Inc.
    Inventors: Timothy J. Clark, Shoeb Ansari
  • Patent number: 5553084
    Abstract: A method and apparatus for error correction enhancement for machine-readable symbols applies particularly to symbols having symbol characters, repeating characters such as pad characters, and error correction characters derived from the symbol and pad characters. The method and apparatus read a selected symbol where the selected symbol has at least one damaged pad character. After failing to decode the symbol, the method determines that the symbol has at least one damaged pad character and then locates at least two consecutive pad characters in the selected symbol. The method replaces any damaged pad characters, and then again attempts to decode the symbol, using the error correction characters, after the pad characters have been replaced.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: September 3, 1996
    Assignee: Intermec Corporation
    Inventors: H. Sprague Ackley, Christopher A. Wiklof
  • Patent number: 5550365
    Abstract: A system for decoding a bar code symbol receives a signal representative of the symbol and searches the signal in one dimension to locate two adjacent critical points corresponding to an element of the symbol. The system also computes a value representative of the signal energy between the two critical points and determines the width of the element in accordance with the value.A bar code symbol decoding system receives a signal representative of a bar code symbol having a plurality of characters, one of which is a checksum character. The system determines a first choice for each of the characters and a second choice for at least one of the characters from the signal. The system performs checksum analysis in accordance with the first choice for each of the characters. If that checksum analysis is not satisfied, then the system performs checksum analysis using the second choice.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: August 27, 1996
    Assignee: United Parcel Service of America, Inc.
    Inventors: Mihael Klancnik, Luis Figarella
  • Patent number: 5525785
    Abstract: A bar code demodulating method includes a step of measuring lengths of successive characters of a bar code, a second step of obtaining a ratio of the length of a demodulating character which is to be demodulated and the length of a preceding, demodulated character and a third step of demodulating the demodulating character by mutually different first and second demodulation schemes, selected in accordance with the obtained length ratio falling within respective, and different, first and second predetermined ranges.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 11, 1996
    Assignee: Fujitsu Limited
    Inventors: Hiroaki Kawai, Shinichi Sato
  • Patent number: 5525784
    Abstract: A bar code demodulating method, in a first step, determines a number of modules, corresponding to the black bars present within a demodulating character of a bar code to be demodulated, with reference to reference black bars in a previously demodulated character and, in a second step, determines a number of modules corresponding to all white bars present within the demodulating character, based on a corresponding reference white bar in the previously demodulated character and, then, demodulates the demodulating character based on the respective numbers of modules determined in the first and second steps.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 11, 1996
    Assignee: Fujitsu Limited
    Inventors: Hiroaki Kawai, Shinichi Sato
  • Patent number: 5504315
    Abstract: A portable, conveniently usable, and inexpensive non-contact bar code verifier permits testing of bar code labels at some arbitrary but constant distance from the verifier. Means are provided for analog analysis of bar code label contrast levels, and for derivation of new, instructive indices characterizing the readability and print quality. Additionally, a new method for determination of absolute bar code label dimensions is disclosed. The method of calibration for arbitrary scanning distance and angle standardizes not only the verifier's ability to measure absolute dimensions at unknown distances, but also its ability to discern contrast under arbitrary lighting conditions and scanning equipment. This is accomplished by employing calibration standards of known characteristics. Bar code verification information may be stored and/or employed for a variety of control and analytical functions as recognized in the art.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: April 2, 1996
    Assignee: Symbol Technologies, Inc.
    Inventors: John Hardesty, Edward Barkan, Christina S. Barkan, Dean Fletcher, Timothy Almeida
  • Patent number: 5494544
    Abstract: Methods of operating embossed card package production system (10) by verifying by reading and comparing information obtained by reading embossed (32) and magnetically encoded information (35) and coded information (27) on a carrier (26A, 26B) stored card and carrier information in a forms data memory (44) and a card data memory (40) to make new cards appropriately prepared and are correctly matched to the carriers (26A, 26B). Incorrect cards (30) are sent to a reject location (90) to prevent formation of incorrect packages. Only cards (30) which are determined to be correctly prepared have activation labels 21 applied which also serve to distinguish them from incorrectly prepared cards (30) and inventory reports are automatically kept of rejected carriers, rejected cards and the number of labels as well as the number of correct carriers produced which are printed on the very type of carrier to which the accounting information relates with a carrier printer (48).
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: February 27, 1996
    Assignee: Dynetics Engineering Coporation
    Inventors: Jeffery L. Hill, Gregory S. Hill, Robert J. Bretl, Gary Zuck, Fred J. Kassabian, Bryant J. Jordan
  • Patent number: 5489767
    Abstract: The media labeling system makes use of human-readable and machine-readable label indicia to automatically identify of the media type contained within each of a plurality of data storage elements that have a substantially uniform external form factor. The machine-readable indicia includes a standard 3-of-9 bar code in addition to a unique bar and space code to provide error detection for damaged or partially obliterated labels, and to help low resolution bar code interpreters to distinguish the media type label from other label indicia present on the data storage element.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: February 6, 1996
    Assignee: Storage Technology Corporation
    Inventor: Robert L. Billington
  • Patent number: 5484993
    Abstract: A card reader maintenance system includes a card reader and a maintenance apparatus.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 16, 1996
    Assignee: Tamura Electric Works, Ltd.
    Inventors: Yoshiaki Seto, Masayuki Miyauchi, Takanobu Fujii
  • Patent number: 5453600
    Abstract: A method of entering a hand-marked response into a system by altering a predetermined modified bar code symbol in a manner so that the bar code is rendered readable. In this manner, bar code reading devices can be utilized to detect the hand marked response. In an alternative embodiment, one of several potential responses may be marked and rendered non-decodable. A bar code reading device determines which of the several responses has been hand-marked by ascertaining which is non-decodable. Marking the response sheets may be aided by using an opaque template sheet or using a pressure sensitive overlay sheet.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: September 26, 1995
    Assignee: Symbol Technologies, Inc.
    Inventor: Jerome Swartz
  • Patent number: 5448047
    Abstract: A method of obtaining and providing card identifying information from a data card presented in connection with a financial transaction, the data card having a magnetic stripe and an embossed region containing identifying information, the method being carried out in a data card terminal. The data card terminal is operative for gathering credit card or check information required for customer transactions at a point of sale. The method comprises providing a transaction risk parameter selectively indicative of a first or second level of transaction security to be provided for the data card terminal. In response to the transaction risk parameter indicating the first level of security, verified card identifying information is provided if either the first data record region or the second data region contains valid card identifying information. In response to the transaction risk parameter indicating the second level of security, a second level security check is performed.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: September 5, 1995
    Assignee: MicroBilt Corporation
    Inventors: Parameswaran B. Nair, John C. Evans, James F. Price, Kumar S. Choudhuri, James T. Stills, Victor V. Goulding
  • Patent number: 5440142
    Abstract: A system and method for testing bar code scanner window viability which determines whether the window is scratched or otherwise damaged enough to require replacement. The system includes a laser beam source. The laser beam passes through a window glass for scanning a bar code label. Light reflected from the bar code label passes through the window glass and is detected and converted into an electrical signal. Finally, a processor determines the bar code information from the electrical signal and determines whether the window glass is damaged enough that the bar code information cannot accurately be determined. The method determines the variance between the widths of the bars and spaces from a plurality of bar code scans and compares the variance to a predetermined threshold. The window glass is replaced when the threshold is exceeded.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: August 8, 1995
    Assignee: AT&T Global Information Solutions Company
    Inventor: Craig E. Maddox
  • Patent number: 5424522
    Abstract: A card convey device includes a card convey unit, a punching unit, a counting unit, and a control unit. The card convey unit selectively conveys a card in a discharging direction and an opposite direction thereto. The punching unit punches the card which slows down, while the card is conveyed by the card convey unit in the discharging direction. The counting unit is enabled after a punching operation is performed by the punching unit, and counts the number of times of repetition of a reciprocal card convey operation in the opposite direction and the discharging direction. The control unit controls a convey operation of the card convey unit and repeatedly reciprocally conveys the card in the opposite direction and the discharging direction until the count value of the enabled counting unit reaches a predetermined count value. When the count value of the counting unit reaches the predetermined count value, the control unit conveys the card in the discharging direction and discharges the card.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: June 13, 1995
    Assignee: Tamura Electric Works, Ltd.
    Inventor: Mitsuru Iwata
  • Patent number: 5416423
    Abstract: A Contact Smart Card (3) is inserted in a contact card reader and its capacitance is measured by applying a square wave generated by an oscillator (1) to it via a resistor (4). The capacitance effect of the smart card (3) affects the amplitude of the output from the resistor (1) and the output is monitored in an amplitude detector (2) connected to receive the signal output from the resistor (4) and to compare it against a threshold level for the signal previously established and stored for an acceptable card.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: May 16, 1995
    Assignee: GPT Limited
    Inventor: Duncan O. De Borde
  • Patent number: 5412194
    Abstract: The robust coding system makes use of a robust bar code on a label to enable a label reading system to automatically reconstruct label indicia information, even though the label has been damaged and is partially obliterated. An error correcting code is incorporated into the bar code sequence imprinted on the label to detect and correct a plurality of errors in the bar code. The error correcting bar code digits can be interleaved with the data imprinted in bar code form on the label or appended thereto. In addition, when the robust coding system is used on labels for data media cartridges, additional information is included in the bar code field to identify the type of media contained in the media cartridge.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: May 2, 1995
    Assignee: Storage Technology Corporation
    Inventors: Hartvig E. Melbye, Robert N. Spurr
  • Patent number: 5404004
    Abstract: A bar code reader employs plural scanners for scanning a bar code mark with respective, plural optical scanning beams, counters connected with the scanners respectively producing numerical data representing the widths of corresponding black and white bars of the bar code. A composer selects the numerical data from the scanners so as to produce composed numerical data, and a decoder decodes the composed numerical data and produces a bar code data signal output. The composer, upon detecting a false data such as an overflow error data or waveform error data present in the respective numerical data output of a first selected scanner, switches therefrom to the respective numerical data output of a second scanner.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: April 4, 1995
    Assignee: Fujitsu Limited
    Inventors: Shinich Sato, Isao Iwaguchi
  • Patent number: 5365586
    Abstract: A method and apparatus is disclosed for determining the remanent noise in a magnetic medium by DC saturation of a region thereof and measurement of the remaining DC magnetization. A conventional magnetic recording transducer may be used to determine the remanent noise. Upon determination, the remanent noise may then be digitized and recorded on the same magnetic medium to thereby "fingerprint" the magnetic medium. This "fingerprint" may then be later used to verify and authenticate the magnetic medium as being an original. In such manner, any magnetic medium, or any object having an associated magnetic medium, may be "fingerprinted" including credit cards, computer programs, compact discs, videotapes, cassette tapes, etc.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: November 15, 1994
    Assignee: Washington University
    Inventors: Ronald S. Indeck, Marcel W. Muller
  • Patent number: 5365045
    Abstract: An IC card comprises, a memory including a system area for storing system information, and a user area for storing user information, a CPU for controlling information read/write access of the memory, and a memory for storing program data for determining an operation of the CPU. The CPU stores predetermined data in the user area on the basis of a first command obtained from an external device, and compares the predetermined data with another predetermined data stored in the user area on the basis of a second command obtained from the external device. The CPU detects an abnormality of one of the memory, and data and address lines of the memory according to the result of comparison.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: November 15, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasuo Iijima
  • Patent number: 5334825
    Abstract: A system and method for monitoring barcode label quality at a point of sale which alerts an operator of a defective label and stores the number of defective labels for each manufacturer. The system includes an optical scanner, including a controller and a memory, a quality indicator, and a point-of-service terminal. The system may additionally include a central host computer. The method of the present invention puts the scanner in predetermined operating modes which activate the quality monitoring functions listed above.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: August 2, 1994
    Assignee: NCR Corporation
    Inventor: Craig E. Maddox
  • Patent number: 5334823
    Abstract: Systems and methods for operating a data card terminal, such as a credit card transaction terminal, for providing chargeback protection services for the benefit of merchants are disclosed. The terminal includes a transaction terminal comprising an embossed character reader and magnetic stripe reader, with a separate signature capture printer. The transaction terminal is operative for detecting the physical presence of a data card during a card transaction. The embossed character reader employs a tactile imager and pattern recognition for detecting the embossed characters on the data card. A signature capturing printer prints a paper receipt, which is signed by a cardholder at a signature capturing window on the printer. A signature capturing system digitizes and compresses signals corresponding to the signature of the card holder.
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: August 2, 1994
    Assignee: National Bancard Corporation
    Inventors: Paul W. Noblett, Jr., Mark Brady, Peter R. Cavicchi, Kumar S. Choudhuri, Timothy W. Depew, John C. Evans, Shelley K. Friedman, James H. Hamilton, Edward G. Kligfeld, Holly B. Krahe, Thomas J. Liney, Murray A. Morton, Parameswaran B. Nair, Gregory A. Philmon, James F. Price, James T. Stills, Laura J. Turner, Diane T. Vogt
  • Patent number: 5331137
    Abstract: A method of entering a hand-marked response into a system by altering a predetermined modified bar code symbol in a manner so that the bar code is rendered readable. In this manner, bar code reading devices can be utilized to detect the hand-marked response. In an alternative embodiment, one of several potential responses may be marked and rendered non-decodable. A bar code reading device determines which of the several responses has been hand-marked by ascertaining which is non-decodable. Marking the response sheets may be aided by using an opaque template sheet or using a pressure sensitive overlay sheet.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: July 19, 1994
    Assignee: Symbol Technologies, Inc.
    Inventor: Jerome Swartz
  • Patent number: 5327510
    Abstract: A data reading apparatus reads data of dots from a recording sheet on which data is recorded in the form of a mesh pattern, and decodes the read data into binary data. The data reading apparatus has an image sensor to read black/white levels of dots of the mesh pattern using the image sensor and to binarize the read levels by a hardware component or CPU processing according to software. An image can have a high recording density by minimizing a dot size.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: July 5, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Shigenori Morikawa, Takeshi Matsuoka, Hiroshi Chikakiyo
  • Patent number: 5293568
    Abstract: The present invention reads out track addresses written onto ID sections of a recording medium, for example, from five, tracks of the plurality of tracks read out simultaneously, to execute demodulation and error correction. In case where the addresses are multiple-written onto the ID sections, the optical spot judges the track address of the desired track on the basis of the plurality of read-out track addresses until the optical spot passes through the remaining track address. Further, in case where there is only a single one of the track addresses written on said ID sections, the track addresses are read out one by one, are demodulated and are error-corrected. The track address of the desired track is judged on the basis of the plurality of read-out track addresses, prior to the fact that the optical spot enters an information recording area.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: March 8, 1994
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Mitsuo Oshiba, Kazutake Sugawara
  • Patent number: 5283422
    Abstract: Coding systems utilizing machine-readable coding are disclosed. The coding systems are extremely simple to use and preferred embodiments of the machine-readable coding require no external reference or reference code or starting point or orientation for reading or decoding. The number of usable codes for any given number of code elements (bits or digits) is maximized, or, conversely, a minimum number of code elements is required for a given application, thus allowing each code element to be of maximum size for a given coding area. Also, methods and apparatus for encoding objects, and for reading, decoding, processing and using the information obtained from such encoded objects are disclosed. The coding may be applied to objects such as casino chips, currency, automated production line components, consumer products, household items, zip coded objects, etc.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: February 1, 1994
    Assignee: CIAS, Inc.
    Inventors: Leonard Storch, Ernst van Haagen
  • Patent number: 5262626
    Abstract: A method for reading bar code symbols which enables legitimate characters recognized by the code in use to be derived from a plurality of scans corresponding to illegitimate characters not recognized by the code in use is disclosed. The method includes the steps of storing representations of the bar code symbol which cannot be decoded to produce legitimate character(s). One of the representations is improved, or corrected, using another representation, and an attempt is made at decoding the corrected representation to produce a legitimate character. If the decoding attempt is not successful, further corrections are made in order to provide a representation which may be decoded to produce a legitimate character.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: November 16, 1993
    Assignee: Symbol Technologies, Inc.
    Inventors: David P. Goren, Theodosios Pavlidis, Glenn Spitz
  • Patent number: 5252813
    Abstract: An automatic transaction apparatus for dealing with cash or the like operates by being accessed by the user through the use of a user specific transaction medium card, which is inserted to the apparatus so that information recorded on it is read. In the event of some trouble of the apparatus, if the card cannot be ejected and returned to the user, a receipt slip of the card with information specific to the user being printed thereon is issued to the user in response to the ejection failure signal.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: October 12, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Yasunori Hamada, Masuo Furutono
  • Patent number: 5247505
    Abstract: The information recording method of the present invention comprises steps of recording information on a recording medium by a recording head during forward movement, reading the information recorded during the forward movement in the opposite sequence to the recording sequence during backward movement, and checking if the information has been correctly written or not based on the information read during the backward movement.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: September 21, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui, Hiroshi Matsuoka, Kazuhiko Matsuoka, Hideki Hosoya, Akio Aoki, Masahiko Enari, Kazuo Minoura