Document Verification Or Graph Reader Patents (Class 250/556)
  • Publication number: 20030042438
    Abstract: A method and system are disclosed for detecting an amount of soiling of a bill. The method includes steps of (A) illuminating at least a portion of the bill with excitation light; in response to the excitation light, (B) emitting response light from the portion of the bill; (C) detecting an intensity of the emitted response light; and (D) correlating the detected intensity with an amount of soiling of the bill. The method can include a further step of (E) correlating the amount of soiling with an amount of wear of the bill, and may also further include a step of (F) detecting a presence of a substantially specular surface region on the bill, indicating a presence of a foreign substance, such as a piece of transparent or semi-transparent tape. Also disclosed is a method and system for detecting a presence of a foreign substance on a surface of a bill.
    Type: Application
    Filed: August 31, 2001
    Publication date: March 6, 2003
    Inventors: Nabil M. Lawandy, John A. Moon
  • Publication number: 20030038256
    Abstract: An imaging apparatus and method in which the focus of the imaging apparatus can be adjusted.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 27, 2003
    Inventors: Gregg S. Schmidtke, Paul C. Coffin, Richard A. Irwin
  • Patent number: 6525329
    Abstract: The invention is a multi-sensor device which generates a signal comprised of one or more electromagnetic waveforms, that are transmitted against a first target material, such as a wall, whereupon said wave or portion thereof is reflected by a first surface and a second wave or portion of said first wave will penetrate the target material and be reflected in part by a second surface for the purpose of ascertaining if the cavity between said first target surface and said second target surface contains a quantity of United States currency.
    Type: Grant
    Filed: October 1, 2000
    Date of Patent: February 25, 2003
    Inventor: David Berman
  • Patent number: 6522399
    Abstract: A signature recognition system for identifying an article with a distinctive diffraction element (or elements) and verifying the presence of that element or elements comprising: an article with one or more diffraction gratings impressed thereon, the grating(s) exhibiting periodic wave surface profiles having a depth-to-pitch ratio &dgr; of between 0.1 and 0.5, a source of polarized electromagnetic radiation of wavelength &lgr; such that the pitch G of the periodic wave surface profile of the grating(s) is comparable to an integer multiple n of that wavelength, a device for directing the source of polarized electromagnetic radiation to the surface of the grating(s) at a plane of incidence substantially normal to the plane of the surface of the diffraction grating and at an angle of approximately 45° azimuth to the alignment of the grooves on the surface, and a device for detecting radiation reflected from the grating(s) surface which is oppositely polarized to the incident radiation.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: February 18, 2003
    Assignee: Qinetiq Limited
    Inventors: Christopher R Lawrence, John R Sambles
  • Publication number: 20030020028
    Abstract: A photosensor system includes a photosensor array which is constituted by two-dimensionally arraying a plurality of photosensors and has a light-receiving surface, and a front light source which is arranged to face the light-receiving surface at an interval, and illuminates a rear surface of an object whose front surface is set on the light-receiving surface. An image reading assembly reads an object image by receiving light that is emitted by the front light source and passes through the object.
    Type: Application
    Filed: July 24, 2002
    Publication date: January 30, 2003
    Applicant: Casio Computer Co., Ltd.
    Inventors: Tomomi Iihama, Hisashi Aoki, Makoto Sasaki, Yasushi Mizutani, Yoshiaki Nakamura
  • Publication number: 20020190229
    Abstract: A photosensor system includes a photosensor array constituted by two-dimensionally arraying a plurality of photosensors, an image reading section which reads a subject image at a predetermined image reading sensitivity by using the photosensor array, a sensitivity adjustment image reading section which reads a sensitivity adjustment subject image while the image reading sensitivity in the photosensor array is changed to a plurality of stages, an optimal image reading sensitivity deriving section which derives an image reading sensitivity optimal for reading operation of the subject image, on the basis of a pixel data group relating to an image pattern of the subject image read by the sensitivity adjustment image reading section, and an image reading sensitivity setting section-which sets the optimal image reading sensitivity as the image reading sensitivity in the image reading section.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 19, 2002
    Applicant: Casio Computer Co., Ltd.
    Inventors: Yoshiaki Nakamura, Yasushi Mizutani
  • Publication number: 20020185615
    Abstract: The invention relates to an apparatus and corresponding method for examining documents, in particular documents of value, identification or security documents, having at least one excitation device for exciting luminescence light (16) in or on a document to be examined (10) and at least two detector units (1, 2) for detecting at least part of the luminescence light (16) emitted by the document (10).
    Type: Application
    Filed: June 10, 2002
    Publication date: December 12, 2002
    Inventor: Thomas Giering
  • Publication number: 20020179862
    Abstract: A system for and a method of optical scanning which provide for focusing a light beam using one or more flex circuits, each flex circuit containing an aperture that is moved into or out of the outgoing optical path of a light beam via an electromagnetic mechanism. The electromagnetic mechanism includes a moving coil or moving magnet attached to each flex circuit for positioning the flex circuit aperture in or out of the outgoing optical path when the electromagnetic mechanism is actuated by an electric current. By positioning a greater or lesser number of apertures in the outgoing optical path, the final aperture size may be modified, thereby adjusting the focal location and depth of field of the light beam. Accordingly, the scanning system provides improved focusing characteristics, as well as an increased read range.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Applicant: PSC Scanning, Inc.
    Inventors: Bryan L. Olmstead, Joseph G. Mistkawi
  • Publication number: 20020175301
    Abstract: In order to provide an apparatus which has a simple arrangement, can be easily adjusted, and can authenticate a bill, negotiable instrument, and the like with high reliability, adjustment is performed in advance in the absence of an identification target to equalize outputs from a photoelectric converter with respect to light sources A and B that emit light beams having different wavelengths. In this state, the difference in output between detection signals based on the light beams transmitted through an identification target is detected as an output from a high-pass filter. A sampling circuit samples a signal proportional to the difference in output between the detection values based on the light sources A and B, which is based on this output difference. Authentication is performed on the basis of the sampled value.
    Type: Application
    Filed: July 11, 2002
    Publication date: November 28, 2002
    Applicant: Yokohama Denshi Kogyo Kabushiki Kaisha
    Inventor: Kunihide Iwaki
  • Patent number: 6483095
    Abstract: In order to provide an apparatus which has a simple arrangement, can be easily adjusted, and can authenticate a bill, negotiable instrument, and the like with high reliability, adjustment is performed in advance in the absence of an identification target to equalize outputs from a photoelectric converter with respect to light sources A and B that emit light beams having different wavelengths. In this state, the difference in output between detection signals based on the light beams transmitted through an identification target is detected as an output from a high-pass filter. A sampling circuit samples a signal proportional to the difference in output between the detection values based on the light sources A and B, which is based on this output difference. Authentication is performed on the basis of the sampled value.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: November 19, 2002
    Assignee: Yokohama Denshi Kogyo Kabushiki Kaisha
    Inventor: Kunihide Iwaki
  • Patent number: 6444969
    Abstract: A device for sensing and digitizing a fingerprint from a subject finger comprising a prism, a pixilated LED array affixed to the bottom surface of the prism and providing for the internal illumination, with a plurality of sub-beams, of the contact surface where the finger of the subject is pressed on the top surface of the prism, and a photoelectric sensor to detect the sub-beam radiation reflected from the fingerprint valley points. A sensor lens may also used for focusing the sub-beam radiation on the sensor. A lens wafer may be affixed between the prism and the LED array for focusing the radiation from each LED on its corresponding illumination point on the contact surface. The fingerprint ridge contact points do not reflect incident sub-beam radiation.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: September 3, 2002
    Assignee: International Automated Systems, Inc.
    Inventor: Neldon P. Johnson
  • Patent number: 6441891
    Abstract: A bill validator for detecting the presence of a bill comprising a bill passageway having a first side and a second side, a light source positioned at the first side, the light source for emitting light across the passageway, a reflecting surface positioned at the second side, and a detector device positioned at the first side, the detector device for receiving light reflected from the reflecting surface.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: August 27, 2002
    Assignee: Coin Acceptors, Inc.
    Inventors: Joseph L. Levasseur, Mark H. Leibu
  • Patent number: 6426509
    Abstract: In quantitatively detecting light permeated through or reflected from a paper sheet in order to detect optical characteristics of the paper sheet, an optical paper sheet checking apparatus detects with stability and optimum precision.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: July 30, 2002
    Assignee: Nippon Conlux Co., Ltd.
    Inventor: Eiji Itako
  • Publication number: 20020084406
    Abstract: Apparatus and method for detecting strings attached to bills or other forms of payment in a currency validator. In one implementation a string fraud detection means uses polarized light to detect a string. In another implementation, polarized light and light in a different range of wavelengths are used to detect a string.
    Type: Application
    Filed: November 30, 2001
    Publication date: July 4, 2002
    Inventors: Jeffrey T. Thawley, Edward M. Zoladz, Philippe S. Jard, David C. Deaville, Bernard Bouchet, Jerome Daout, Robert Clauser, Michael D. Nunn
  • Patent number: 6403944
    Abstract: A system for measuring a biological parameter, such as blood glucose, the system comprising the steps of directing laser pulses from a light guide into a body part consisting of soft tissue, such as the tip of a finger to produce a photoacoustic interaction. The resulting acoustic signal is detected by a transducer and analyzed to provide the desired parameter.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: June 11, 2002
    Assignee: Abbott Laboratories
    Inventors: Hugh Alexander MacKenzie, John Matthew Lindberg
  • Patent number: 6399938
    Abstract: As shown in FIG. 1, an optical device 10 comprises an input optical member 11, in which a plurality of optical fibers 14 are arranged parallel to each other and integrally formed, having an entrance surface 11a and an exit surface 11b which intersect an optical axis at an angle of 15° and at an angle of 30°, respectively; and an output optical member 12, in which a plurality of optical fibers are c:l arranged parallel to each other and integrally formed, having an entrance surface 12a and an exit surface 12b which intersect an optical axis at an angle of 7.5° and at an angle of 90°, respectively. Here, the exit surface 11b of the input optical member 11 and the entrance surface 12a of the output optical member 12 are in contact with each other, whereas the angle formed between the optical axis of the input optical member 11 and the optical axis of the output optical member 12 is an angle of 22.5° which is the difference between 30° and 7.5° mentioned above.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Takeo Sugawara, Makoto Suzuki
  • Patent number: 6378683
    Abstract: A currency evaluation device for receiving a stack of currency bills and rapidly evaluating all the bills in the stack. The device includes an input receptacle for receiving a stack of bills to be evaluated and a single output receptacle for receiving the bills after they have been evaluated. A transport mechanism transports the bills, one at a time, from the input receptacle to the output receptacle along a transport path. The device further includes a discriminating unit that evaluates the bills. The discriminating unit comprises two detectors positioned along the transport path between the input receptacle and the output receptacle. The detectors are disposed on opposite sides of the transport path so that they are disposed adjacent to opposite sides of the bills. The discriminating unit counts and determines the denomination of the bills. The evaluation device also includes means for flagging a bill when the denomination of the bill is not determined by the discriminating unit.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: April 30, 2002
    Assignee: Cummins-Allison Corp.
    Inventor: Douglas U. Mennie
  • Patent number: 6365888
    Abstract: A grid-shaped array of conductor areas is used for capacitive image acquisition. Shielding conductors are disposed in each case between the conductors that are provided for measurement. During a plurality of charging and discharging cycles, the potential is always carried along on the conductors belonging to a respective pixel in order to prevent displacement currents between the shielding capacitors. By way of example, a compensation line with a feedback operational amplifier can be used for identically altering the electrical potentials on the conductors.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: April 2, 2002
    Assignee: Infineon Technologies AG
    Inventors: Paul-Werner Von Basse, Josef Willer, Thomas Scheiter, Stephan Marksteiner
  • Patent number: 6359287
    Abstract: A module (28) for sensing the edges of a banknote as it passes through the module. The module consists of an array of LEDs (32) optically coupled to a light diffusing element (36) past which the banknote moves. A CCD array (40) has photoelectric conversion elements coupled to the path in which the banknote moves by a self-focusing fiber-optic lens array (38). The CCD array consists of four segments (42,44,46,48) having individual shift registers which are read out in parallel, and converted to digital signals by a number of comparators (56). The comparators compare the CCD pixel output with individual threshold levels which are stored in a digital memory (54). The pixel threshold levels are converted to an analog signal for comparison with the CCD output signals by digital to analog converters (54). The digital data streams produced are divided into series of data which are analyzed to determine the presence of an optical transition in the corresponding pixel series of the CCD arrays.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: March 19, 2002
    Assignee: Mars Incorporated
    Inventors: Christian Voser, Didier Rossel, Derek Hutchinson
  • Patent number: 6355937
    Abstract: A fingerprint optical input apparatus comprises a contact image sensor for viewing a moving finger and providing a high contrast image. A narrow strip of the fingerprint touching a transparent platen is illuminated by sheet of collimated light normal to or at an oblique angle to the surface. The fingerprint image is viewed at an oblique angle by partially scattered light or by frustrated total internal reflection by a GRIN rod lens array and projected onto a linear array sensor. Various embodiments of the platen provide a compact design by using TIR or mirror reflections of the fingerprint image.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: March 12, 2002
    Assignee: Kinetic Sciences Inc.
    Inventors: Keith Antonelli, Geoffrey Vanderkooy, Timothy Vlaar, Guy Immega
  • Patent number: 6353233
    Abstract: In a cleaning sheet for cleaning a bill identification unit comprising bill identification sensors, a brush part is formed on the surface of a main sheet body of the cleaning sheet so that when the brush part passes through bill identification sensors, the brush part cleans the bill identification sensors and concave portions where the bill identification sensors are embedded so that even a non-contact type bill identification sensor disposed slightly retreated from the surface of a bill transporting route can be cleaned.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 5, 2002
    Assignee: Kabushiki Kaisha Nippon Conlux
    Inventors: Tetsuro Kikuchi, Shigeru Yasuda, Yuichi Sakamoto
  • Patent number: 6333989
    Abstract: A fingerprint sensing device and recognition system includes a capacitive array of sense elements in conjunction with a means of determining motion of a surface being imaged. A plurality of images is combined to form a composite image having an area that is greater than the area of a single captured image. The sensing device is disposed between protective surfaces and supported by a flexible structure.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: December 25, 2001
    Assignee: DEW Engineering and Development Limited
    Inventor: Stephen J. Borza
  • Patent number: 6310683
    Abstract: A light beam emitted by a surface illuminant reaches the surface of a transparent base layer of a recess/projection detection optical element. A light beam emitted almost vertically is emitted to an air layer. A light beam incident on the transparent base layer at an angle larger than a total reflection angle returns to a two-dimensional photosensor at a portion contacting the air layer, but scatters in a transparent particle at a portion contacting the transparent particle. When a finger is brought into contact with a scattering reflection layer, the scattering reflection state does not change in an area corresponding to a valley of a fingertip. As indicated by an arrow, an amount of reflected light beam is large. In an area corresponding to a ridge of the fingertip, the light beam scattered by the transparent particle is absorbed. The amount of reflected light beam is small, as indicated by an arrow.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: October 30, 2001
    Assignee: Casio Computer Co., Ltd.
    Inventors: Minoru Fujiwara, Makoto Sasaki, Hiromitsu Ishii, Tetsuo Muto
  • Patent number: 6301047
    Abstract: The object to be identified is affixed with an identification medium comprising a reflective layer consisting of a reflective hologram or diffraction grating. The high polymer cholesteric liquid crystal provides an inexpensive identification medium, and the use of the second light receiving unit for providing a reference signal provides a high S/N output signal which is highly distinct and resistant to the contamination of the identification medium. Also, the elimination of the need for expensive optical elements such as beam splitters also contributes to the reduction of cost.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: October 9, 2001
    Assignee: NHK Spring Co., Ltd.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Seiya Shibuya
  • Publication number: 20010017357
    Abstract: A reading unit has an auxiliary scanning feed unit for feeding a stimulable phosphor sheet vertically in an auxiliary scanning direction, a scanning light applying unit for applying a laser beam to the stimulable phosphor sheet, a reading assembly for reading radiation image information carried by the stimulable phosphor sheet, a fixed guide unit for holding one surface of the stimulable phosphor sheet, and first and second movable guide units for holding the other surface of the stimulable phosphor sheet, the first and second movable guide units being movable toward and away from the stimulable phosphor sheet. Consequently, the radiation image information recorded on the stimulable phosphor sheet can be read highly accurately and efficiently with a simple arrangement.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 30, 2001
    Inventor: Hiroshi Chikugo
  • Patent number: 6259108
    Abstract: A fingerprint optical input apparatus comprises a contact image sensor for viewing a moving finger and providing a high contrast image. A narrow strip of the fingerprint touching a transparent platen is illuminated by sheet of collimated light at an oblique angle to the surface. The fingerprint image is viewed by frustrated total internal reflection by a GRIN rod lens array and projected onto a linear array sensor. Various embodiments of the platen provide a compact design by using TIR or mirror reflections of the fingerprint image.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: July 10, 2001
    Assignee: Kinetic Sciences Inc.
    Inventors: Keith Antonelli, Geoffrey Vanderkooy, Timothy Vlaar, Guy Immega
  • Patent number: 6255641
    Abstract: A device for sensing and digitizing a fingerprint from a subject finger comprising a prism, a pixilated illuminating radiation source such as a surface-emitting laser or a radiation source and a LCD affixed to the bottom surface of the prism and providing for the internal illumination, with a plurality of sub-beams, of the contact surface where the finger of the subject is pressed on the top surface of the prism, a photoelectric sensor to detect the sub-beam radiation reflected from the fingerprint valley points, and a lens for focusing the sub-beam radiation on the sensor. The fingerprint ridge contact points do not reflect incident sub-beam radiation. A computer can provide for sequential emission of the sub-beams so that a single cell photoelectric sensor can be used to detect the reflected sub-beams or a multiple cell photoelectric sensor can be used, with each cell corresponding to a particular sub-beam. Reflected sub-beam radiation corresponds to a fingerprint valley point.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: July 3, 2001
    Assignee: International Automated Systems, Inc.
    Inventor: Neldon P. Johnson
  • Patent number: 6223876
    Abstract: A bank note detector has four LED's emitting Red, Green, Blue, and infrared light and a detector for sensing light reflected and transmitted from the bank note. The system includes microprocessor for analysis circuiting for selecting and adjusting the LED's, for programmable amplifying the light detected and feeding the amplified signal to the microprocessor.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: May 1, 2001
    Assignee: Global Payment Technologies, Inc.
    Inventors: Michael Walsh, Miroslaw Blaszczec, Thomas W. Mazowiesky
  • Patent number: 6220419
    Abstract: A currency evaluation device for receiving a stack of currency bills and rapidly evaluating all the bills in the stack. The device includes an input receptacle for receiving a stack of bills to be evaluated and a single output receptacle for receiving the bills after they have been evaluated. A transport mechanism transports the bills, one at a time, from the input receptacle to the output receptacle along a transport path. The device further includes a discriminating unit that evaluates the bills. The discriminating unit comprises two detectors positioned along the transport path between the input receptacle and the output receptacle. The detectors are disposed on opposite sides of the transport path so that they are disposed adjacent to opposite sides of the bills. The discriminating unit counts and determines the denomination of the bills. The evaluation device also flags a bill when the denomination of the bill is not determined by the discriminating unit.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: April 24, 2001
    Assignee: Cummins-Allison
    Inventor: Douglas U. Mennie
  • Patent number: 6191410
    Abstract: A device for sensing and digitizing a fingerprint from a subject finger comprising a prism, a pixilated illuminating radiation source such as a surface-emitting laser or a radiation source and a LCD affixed to the bottom surface of the prism and providing for the internal illumination, with a plurality of sub-beams, of the contact surface where the finger of the subject is pressed and the top surface of the prism, and a photoelectric sensor to detect the sub-beam radiation reflected from the fingerprint valley points. The fingerprint ridge contact points do not reflect incident sub-beam radiation. A computer can provide for sequential emission of the sub-beams so that a single cell photoelectric sensor can be used to detect the reflected sub-beams or a multiple cell photoelectric sensor can be used, with each cell corresponding to a particular sub-beam. Reflected sub-beam radiation corresponds to a fingerprint valley point. Non-reflected sub-beam radiation corresponds to a fingerprint ridge point.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: February 20, 2001
    Assignee: International Automated Systems, Inc
    Inventor: Neldon P. Johnson
  • Patent number: 6188080
    Abstract: A module (28) for sensing the edges of a banknote as it passes through the module. The module consists of an array of LEDs (32) optically coupled to a light diffusing element (36) past which the banknote moves. A CCD array (40) has photoelectric conversion elements coupled to the path in which the banknote moves by a self-focusing fibre-optic lens array (38). The CCD array consists of four segments (42,44,46,48) having individual shift registers which are read out in parallel, and converted to digital signals by a number of comparators (56). The comparators compare the CCD pixel output with individual threshold levels which are stored in a digital memory (54). The pixel threshold levels are converted to an analog signal for comparison with the CCD output signals by digital to analog converters (54). The digital data streams produced are divided into series of data which are analysed to determine the presence of an optical transition in the corresponding pixel series of the CCD arrays.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: February 13, 2001
    Assignee: Mars Incorporated
    Inventors: Christian Voser, Didier Rossel, Derek Hutchinson
  • Patent number: 6163034
    Abstract: An improved optical sensor for a banknote validator uses an aspherical lens having a planar wall as a combination radiation plug for a port in the pathway and a focusing arrangement. Emitters and receivers are closely positioned on a common support and generally located at the focal point of the lens. The radiation reflected by a banknote is focused and received by the receiver. The lens also serves to collimate the produced radiation of the emitters for scanning of the banknote.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: December 19, 2000
    Assignee: Cashcode Company Inc.
    Inventor: Vitold Khvostov
  • Patent number: 6154580
    Abstract: A fingerprint sensor is disclosed, which employs a plurality of tactile sensors, each has an elastic insulating body between a member of an electrically conductive material, i.e., a gate electrode, and an insulating film deposited on a channel region of a field-effect transistor (FET). The channel region is formed between a source region and a drain region. Each of the tactile sensors is connected in series with a transistor that serves as a source of constant or steady current to form a source follower circuit. With the source follower circuit, output of each of the tactile sensors is converted into source voltage. The source voltage of each of the source follower circuits is extracted via a first switching element at a common output terminal. The source follower circuits are connected via a second switching element to a source of electric power.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: November 28, 2000
    Assignee: NEC Corporation
    Inventors: Toshihide Kuriyama, Michihisa Suga
  • Patent number: 6150665
    Abstract: A fingerprint detecting device includes a flat transparent body, a light source, a thin surface film layer, a fluid layer, and an image detection unit. The transparent body on which a skin surface of a finger is pressed has a surface constituted by a scattering surface with a fine three-dimensional unevenness. The light source irradiates incident light from an inside of the transparent body on the skin surface pressed against the surface of the transparent body. The surface film layer is formed on the surface of the transparent body via a small gap, on which a three-dimensional pattern of the skin surface is transferred by pressing the finger. The fluid layer is formed by sealing one of a gas and a liquid in the gap between the surface of the transparent body and the surface film layer, and is pressed by the surface film layer on which the three-dimensional pattern of the skin surface is transferred.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: November 21, 2000
    Assignee: NEC Corporation
    Inventor: Michihisa Suga
  • Patent number: 6125986
    Abstract: A sheet discriminating apparatus includes a light source for emitting light toward a sheet, a spectrophotometer for receiving light emitted from the light source and reflected by a non-printed surface portion of the sheet and generating spectral data, a memory for storing reference data, and a discriminator for discriminating genuineness of the sheet based on the spectral data generated by the spectrophotometer and the reference data stored in the memory. According to the thus constituted sheet discriminating apparatus, it is possible to accurately discriminate the genuineness of a sheet, particularly a bill or security certificate.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: October 3, 2000
    Assignee: Laurel Bank Machines Co., Ltd.
    Inventor: Mitsuhiro Nagase
  • Patent number: 6108438
    Abstract: A fingerprint sensing device comprises an array of sense elements (12) which each include a sense electrode (33), providing in combination with an overlying fingerprint part a capacitance (35), and first and second diode devices (30, 31) connected respectively between the sense electrode and associated ones (18, 20) of first and second sets (e.g. row and column) address conductors. An address circuit (22, 24) connected to the address conductors biases the diode devices in a respective address period such that a potential is applied via the first address conductor and the first diode device to the sense electrode and thereafter stored charge, indicative of the capacitance, is transferred via the second diode device to the second address conductor. The device offers fast, reliable, scanning and can conveniently be implemented using thin film technology for low cost and compactness.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: August 22, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Neil C. Bird, Gerard F. Harkin
  • Patent number: 6104036
    Abstract: An apparatus and method for detecting watermark and security thread in a currency note. Optical sensing circuits positioned from the surface of the currency note rely upon the transmissive and reflective characteristics of the security features and the note itself to determine the authenticity of the note and the security feature. The apparatus and methods determine a difference signal between the transmissive and reflective light signals and compare the difference signal to a series of known difference signals.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: August 15, 2000
    Assignee: Global Payment Technologies
    Inventor: Thomas W. Mazowiesky
  • Patent number: 6097035
    Abstract: A fingerprint detection apparatus which includes a detection array having a detection surface, and a fingerprint platform configured to supply a plurality of partial fingerprint images of a fingerprint to the detection surface as the fingerprint is moved relative to the detection surface. The fingerprint detection apparatus also includes a processing device that is configured to construct a final fingerprint image from the plurality of partial fingerprint images supplied to the detection surface. A method of detecting a fingerprint image comprising the steps of: (1) supplying a plurality of partial fingerprint images of a fingerprint to a detection surface of a detection array as the fingerprint is moved relative to the detection surface; and (2) constructing a final fingerprint image from the plurality of partial fingerprint images.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: August 1, 2000
    Assignee: Digital Persona, Inc.
    Inventors: Serge J. Belongie, Vance C. Bjorn
  • Patent number: 6061122
    Abstract: Provided is an economical identification system suitable for use on commercial products which is difficult to duplicate, and highly identifiable. The system includes an identification medium having a high-polymer cholesteric liquid crystal material applied thereon. The high-polymer cholesteric liquid crystals selectively reflect a certain wavelength, and this wavelength changes with the change in the incident angle of the light. The liquid crystals also have the property to circularly polarize the reflected light in either sense. By taking advantages of such properties, it is possible to provide a highly identifiable structure which, however, is highly difficult to illicitly duplicate. In particular, by forming the reflective layer of a hologram with high-polymer cholesteric liquid crystals, the hologram can be used as an identification medium which is highly difficult to duplicate but easy to identify with a machine.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: May 9, 2000
    Assignees: NHK Spring Co., Ltd., Nippon Mitsubishi Oil Corporation
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Seiya Shibuya
  • Patent number: 6044952
    Abstract: A document acceptor includes a document transport path and a multi-function optical sensor disposed adjacent the document path. The multi-function sensor can be operated in one of two or more modes. Depending on the mode in which the sensor is operated, signals from the sensor can be used, for example, to indicate whether a document has reached a particular position, to determine whether the document includes a predetermined pattern, such as a bar-code pattern, or to determine whether an attempt is being made to pull the document out of the acceptor.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: April 4, 2000
    Assignee: Mars, Incorporated
    Inventors: Chad C. Haggerty, Patrick J. McGarry, Edward M. Zoladz, Jr.
  • Patent number: 6024202
    Abstract: A method and apparatus for detecting radiation in a relatively narrow wavelength band within radiation having a wide range of wavelengths. The method comprises detecting radiation in a first wavelength band including the narrow wavelength band and other wavelengths; detecting radiation in a second wavelength band which comprises substantially only the other wavelengths; and comparing the levels of detected radiation to determine the presence of radiation in the narrow wavelength band.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: February 15, 2000
    Assignee: De La Rue International Limited
    Inventor: Michael Potter
  • Patent number: 6025603
    Abstract: The present specific document determining apparatus according to the present invention comprises a microwave sensor for irradiating a microwave to and scanning a document, detecting a reflected portion of the irradiated microwave, outputting a first detection signal, again irradiating a microwave and scanning the document after the document is placed on a contact glass, detecting a reflected portion of the irradiated microwave, and outputting a second detection signal; a signal processing section for using the first detection signal as a reference signal and comparing a level of the reference signal to a level of the second detection signal to make determination as to whether metallic fiber is included in the document or not, and a controller for making determination as to whether the document is a specific one or not according to a result of determination by the signal processing section.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: February 15, 2000
    Assignee: Ricoh Company, Ltd.
    Inventors: Yutaka Hasegawa, Takeshi Ukai, Hideaki Yamagata, Kazuhisa Ohtsubo, Mamoru Maeda
  • Patent number: 6002139
    Abstract: An image input device includes a light source, a light guide for guiding the light, a first and a second low refractive index layer formed on surfaces of the light guide, the first and second low refractive index layers having a lower refractive index than that of the light guide, a light input device to make the light from the light source incident onto the light guide so that the incident light is totally reflected at the boundary of the light guide with the first or second low refractive index layer, a photoelectric converter, the photoelectric converter being disposed on the second low refractive index layer and an optical element having a plurality of lenses optically contacted with the surface of the light guide via the first low refractive index layer, the optical element taking out part of the light traveling in the light guide to illuminate a document and collecting reflected light from the document onto the photoelectric converter by means of the lenses.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 14, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masayuki Katagiri
  • Patent number: 5990915
    Abstract: A time recorder receives bar coded time cards, punches time data on the cards and stores the time data in memory. Each card has a bar code at each end corresponding to the same value. For each pay period, a unique bar code and the card on which it is printed are assigned to each employee during an initialization process. A card is inserted upside down into the time recorder for each employee and the bar code is read by the system and assigned to an employee. At the same time, employee information is printed on the card.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: November 23, 1999
    Assignee: Simplex Time Recorder Co.
    Inventors: Radu R. Tenenbaum, David R. Beaulieu, Peter J. Simone, Russ S. Camacho
  • Patent number: 5964336
    Abstract: A sensor section for obtaining identification data from a bill passing through a bill transfer path can selectively be mounted in a plurality of positions on the body of a bill identifying apparatus. The sensor section is mounted in one of the mounting positions, and a certain region of the bill passing through the transfer path is sensed by means of a sensor section to obtain identification data. When the use of forged bill is identified by the bill identifying apparatus, or after the machine has been used for a predetermined time, the mounting position of the sensor section is changed to another one. Thereupon, the sensor section senses other region of the bill passing through the transfer path to obtain identification data. Thus, the sensor section can easily cope with the use of the counterfeit bill even if the bill identifying apparatus is designed to be capable of sensing only a part of the whole area of the bill.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: October 12, 1999
    Assignee: Nippon Conlux Co., Ltd.
    Inventors: Eiji Itako, Yukio Ito
  • Patent number: 5947255
    Abstract: The present invention provides a discrimination method which reduces memory size and validate bills at a high speed. According to the present invention, reflected light or transmitted light from a paper note is received by an image sensor, image data is stored in a memory device, a region of the paper note is cut out from the image data in the memory device, the cut-out paper note image data is blocked and normalized, and a bit corresponding to the blocked value is turned on, the block paper note image data is encoded into pattern data, and the compression-coded pattern data is compared with prestored reference paper note pattern data to discriminate the paper note.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: September 7, 1999
    Assignee: Glory Kogyo Kabushiki Kaisha
    Inventors: Hironori Shimada, Toshimitsu Kozuki
  • Patent number: 5942762
    Abstract: An optical scanner utilizes two linear CCD detectors and a bandpass means to improve the ability of the scanner to discriminate against specular reflection. A coded symbology is illuminated by a noncoherent light source and light reflected from the coded symbology along a first path strikes the front face of the bandpass means. The bandpass means, functioning as a notch filter, transmits a select bandwidth of light while reflecting all other light onto a first CCD detector. Simultaneously, light reflected from the bar code symbol travels along a second path, at a different angle with respect to the plane of the coded symbology than the first path, is reflected from a mirror onto the back face of the bandpass means. The bandpass means transmits the select bandwidth of light onto a second CCD detector and reflects all other light. The second CCD detector has a notch filter which permits the detection of only the select bandwidth.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: August 24, 1999
    Assignee: Accu-Sort Systems, Inc.
    Inventor: Kurt Hecht
  • Patent number: 5942761
    Abstract: A fingerprint reading modular device capable of extracting and accurately reproducing and enhancing the ridge pattern on the skin of a fingertip is provided. A narrow illumination source spanning the width of the device is focused onto a movable glass or transparent platen, producing reflected rays containing fingerprint information, as the finger is placed on this platen. Reflected rays are focused by a Selfoc optic fiber lens array onto a linear array of solid state reading elements which convert the image of the fingerprint to electrical signals, producing a digital image for each line of information. The movable transparent platen has an initial position and a terminal position, such that the method of scanning begins with the finger pressed against the platen in its initial position and pushed until the platen reaches its terminal position, whereby the solid state elements read multiple lines of the finger as it moves towards the terminal position.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 24, 1999
    Inventor: Raja Singh Tuli
  • Patent number: 5892239
    Abstract: A bill or security discriminating apparatus includes at least one irradiating device for irradiating a surface of a bill or security at a predetermined angle with the surface thereof, at least one polarization separating device for receiving light reflected by the surface of the bill or security and separating the received light into P-polarized light and S-polarized light, at least one first light detector for photoelectrically detecting the P-polarized light separated by the at least one polarization separating device and generating an electrical signal in accordance with intensity of the detected light, at least one second light detector for photoelectrically detecting the S-polarized light separated by the at least one polarization separating device and generating an electrical signal in accordance with intensity of the detected light, and a discriminator for discriminating the bill or security in accordance with the intensity of the P-polarized light and S-polarized light based on the electrical signals
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: April 6, 1999
    Assignee: Laurel Bank Machines Co., Ltd.
    Inventor: Mitsuhiro Nagase
  • Patent number: 5859420
    Abstract: An optical imaging device such as a fingerprint imager or a CCD camera, has a reduced size due to the provision of multiple lenses which are associated with respective CCDs. The optical path between the lenses and the CCDs is shortened. In a fingerprint version of the device, a staircase-shaped prism is advantageously used in combination with the multiple lens and multiple CCD arrangement. An alignment means is provided to facilitate the reconstructing the image out of partial images created by separate CCDs.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: January 12, 1999
    Assignee: Dew Engineering and Development Limited
    Inventor: Stephen J. Borza