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WO2000007115A1 - Procede et systeme de commande d'acces a des conferences sur ordinateur par utilisation d'objets en relief - Google Patents

Procede et systeme de commande d'acces a des conferences sur ordinateur par utilisation d'objets en relief Download PDF

Info

Publication number
WO2000007115A1
WO2000007115A1 PCT/US1999/017268 US9917268W WO0007115A1 WO 2000007115 A1 WO2000007115 A1 WO 2000007115A1 US 9917268 W US9917268 W US 9917268W WO 0007115 A1 WO0007115 A1 WO 0007115A1
Authority
WO
WIPO (PCT)
Prior art keywords
user
image
relief object
computer
host server
Prior art date
Application number
PCT/US1999/017268
Other languages
English (en)
Inventor
Robert L. Miller
Original Assignee
Ethentica, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ethentica, Inc. filed Critical Ethentica, Inc.
Priority to AU54612/99A priority Critical patent/AU5461299A/en
Publication of WO2000007115A1 publication Critical patent/WO2000007115A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints

Definitions

  • This invention relates to relief object image generators, and more particularly, to use of
  • Relief objects are objects
  • the platen is
  • the light is typically
  • TLR Internal Reflection
  • the optical system is usually comprised of
  • optically treated, modulated light then be
  • values for the array elements may then be processed by a computer for classification or
  • the platen surface is illuminated by the light source.
  • optically treating elements are typically placed at a distance and angle from the platen to receive
  • the optical treating elements must be located at distances from the platen where light rays
  • the platen and sensor array in a typical relief object imaging system are tilted to
  • a keystone distortion causes a type of distortion known as a keystone distortion, which is an apparent shortening of one side of the image due to an asymmetrical magnification factor imposed by this tilt angle.
  • the resulting optical aberration causes the relief object image generator to create a trapezoidal
  • treating elements exacerbates the geometric constraints for the system and further impacts the
  • moisture may not adequately correct degradation caused by excessively dry relief objects and
  • control systems use a password or other secret tokens that an authorized user enters to activate a
  • ⁇ are typically supported by a host server that couples two or more users together in a
  • conferences is "chat rooms.”
  • the servers that host communication sessions for conferences may
  • ISP Internet service provider
  • the ISP or third party may
  • the server can verify the user's authorization to join a conference.
  • PDN personal identification number
  • the PLN may be encrypted, the encrypted PLN may still be captured and the encryption method
  • pedophiles may
  • control devices are overcome by a system made in accordance with the principles of the present
  • present invention includes a relief object generator which is comprised of a single electrode
  • electroluminescent device coupled to an alternating current source to generate an image
  • image processor for generating image data corresponding to the electrical signals received from
  • the sensor array and for comparing the stored image data to the generated image data, the image
  • processor generating an access granted signal in response to the stored image corresponding to
  • the generated image data Preferably, the image data generated by the processor of the access
  • control device is descriptive information that corresponds to the generated image and the image
  • data stored in the memory is descriptive information that corresponds to the relief object image
  • invention includes a relief object image generator coupled to a computer for user access, the
  • relief object image generator for generating images of a relief object brought in proximity to the
  • relief object image generator for receiving the generated images and converting the images to electrical signals corresponding to the received images
  • image processor for
  • the image processor may generate a select signal in response
  • the image processor may control a "click"
  • image processor of the computer control device of the present invention may generate an
  • the computer control device may
  • present invention has a reduced geometry and the ability to incorporate other functions required
  • the electroluminescent device may be an inorganic or organic
  • the electrical current source has
  • one lead coupled to the single electrode of the electroluminescent device and a second lead
  • This electroluminescent device provides current to the relief object and the current is strongly coupled from the relief
  • An organic single electrode electroluminescent device creates an image of a relief object
  • conductive layer form current paths in the impedance layer and, correspondingly, an image of
  • DC direct current
  • optical image generated by the system of the present invention may be processed by
  • optical elements and provided to a sensor array.
  • the optical elements include
  • the present invention may be integrated circuits or the like. Using reduction lenses to reduce the
  • circuit is made of silicon which has a cost directly proportional to the physical surface area of the
  • a one-to-one sensor array is
  • the one-to-one sensor array located proximate to the single electrode electroluminescent device.
  • the electroluminescent device has a length and width which is approximately the same as the electroluminescent device.
  • one-to-one sensor array may be made of a semiconductor material on an insulating substrate
  • the sensor array is proximate to the
  • electroluminescent device are substantially orthogonal to the path of the light generated by the
  • the electroluminescent device includes a transparent electrode layer, a dielectric layer, a light emitting layer which is interposed between a first surface of the
  • the dielectric layer may be
  • a relief object relief generator used in a computer control device made in accordance with
  • the senor may be placed directly opposite the transparent electrode
  • a keyboard of a laptop computer may be located on a keyboard of a laptop computer to generate an image of a fingerprint
  • the fingerprint may be processed to generate descriptive information that is distinctive for the fingerprint.
  • information may be the image itself or a set of algorithmically derived templates which map
  • the descriptive information is compared to stored fingerprint descriptive information to
  • the computer access control device of the present invention may be used to generate
  • access granted signal may be transmitted to another computer coupled to an open network.
  • second computer may use the transmitted descriptive data to verify that the user associated with
  • the relief object at the remote site is authorized to access the second computer. Consequently,
  • Another inorganic single electrode elecfroluminescent device that may be used with
  • a transparent electrode layer a light emitting layer having an exposed outer surface
  • object is a person's finger.
  • the light emitting layer of the inorganic type of electroluminescent device may include
  • phosphor particles which may be a coating applied and adhered to the first surface of the
  • the light emitting particles may be any suitable light emitting particles.
  • the light emitting particles may be any suitable light emitting particles.
  • the light emitting particles may also be phosphor
  • the phosphor particles and the phosphor particles may be encapsulated within a protective dielectric layer to
  • inorganic electroluminescent device is comprised of indium tin oxide (ITO) or a zinc
  • the phosphor is preferably zinc sulfidexopper (ZnS:Cu) or
  • the dielectric layer may be barium titanate
  • the light emitting layer of this type of inorganic elecfroluminescent device may also be used.
  • Empirical measurements indicate that both the frequency and the waveform of the alternating
  • the average light intensity generated by the phosphors may be varied.
  • invention includes a pressure- variable impedance layer that covers the dielectric layer, a flexible
  • variable impedance layer is comprised of
  • emitting particles determines the intensity of the light for the optical image of the valleys
  • variable impedance layer conductive/capacitive paths through the variable impedance layer, excessive moisture or dryness
  • Systems made in accordance with the principles of the present invention may include an
  • organic electroluminescent device The structure of the organic elecfroluminescent device may
  • Alq a light-emitting polymer with specialized structures which provide
  • Light-emitting polymers include
  • the electroluminescent device If the relief object to be imaged is not capable of withstanding
  • an insulating layer is
  • the insulating layer is a pressure-variable impedance layer such as the one discussed
  • the pressure-variable impedance layer selectively provides an electrical impedance
  • the organic elecfroluminescent device More preferably, the organic elecfroluminescent device
  • elecfroluminescent device provide a relief object image generator which may be powered from a
  • a relief object image generator of the type described above possesses physical
  • PDN personal identification numbers
  • passwords
  • memory is any information storage media or device which is not physically resident with the relief object image generator but is typically controlled by the user. This includes, but is not
  • a single electrode electroluminescent device is mounted,
  • the current source and automatic gain control (AGC) are in electrical
  • processor or an application specific integrated circuit (ASIC) to generate descriptive information
  • the processor or ASIC determines whether the resulting set of
  • fingerprint descriptive information corresponds to one of the sets stored within the computer for
  • the computer is activated. Otherwise, access to the computer is denied.
  • the computer is activated. Otherwise, access to the computer is denied.
  • the relief object image generator is normally in a "sleep" mode when the computer is off.
  • authorization process commences. If authorization is verified, the computer is automatically
  • generator may be used to obtain an image of a person's finger so it can be processed and the
  • an image of a person's finge ⁇ rint may be
  • the relief object image generator is mounted on or near a computer
  • This image data may be used to image a person's finge ⁇ rint. This image data may
  • the image data or identifying data set are included
  • a user identification message in a user identification message and sent to the conference host server.
  • the conference host server At the host server, a
  • biometric data corresponding to each authorized user is maintained.
  • data may be obtained during a registration process and converted to electronic form for storage at
  • the host server receives the user identification message containing the biometric
  • the user is coupled to the conference supported by the
  • a computer preferably, it is mounted in a location convenient for user access.
  • a cursor confrol device such as a mouse, joystick,
  • the relief object image generator By sizing the relief object image generator so it approximates or is less than that of known cursor control devices, the relief object image generator may be more readily inco ⁇ orated into
  • elements may transition from a light detecting state to a no light detected state or vice versa.
  • resulting change in the generated image is processed to determine a direction of movement of the
  • screen pointer to move in a corresponding direction. For example, if a finger is rolled to the
  • the cursor may be moved in
  • the "click" of known mouse devices for highlighting a displayed object may be
  • a computer control device of the present invention may use a relief object
  • the processor may
  • double-click may be implemented by detecting repetitive crossings of the image intensity
  • the computer control device of the present invention may also be used for operational
  • processor may detect changes in the relief object image so a user may select or activate a
  • the processor may detect other changes
  • a computer operational control device For example, a computer operational control device
  • processor and memory of the control device processes images of a finger or other object
  • the user may select a confrol parameter for the monitor, such as
  • Fig. 1 depicts a relief object image generating system made in accordance with the
  • Fig. 1A depicts the electroluminescent device of Fig. 1 having a concave surface to
  • Fig. 2 depicts an embodiment of the present invention that insulates the relief object from
  • Fig. 3 depicts an embodiment of the present invention in which an organic compound
  • Fig. 4 is an embodiment of the present invention using a reduction lens and sensor array
  • Fig. 5 depicts an embodiment of the present invention with a sensor array which is
  • Fig. 6 is a top plan view of a keyboard of a portable computer showing a location for a
  • Fig. 7 A is a depiction of a finge ⁇ rint sensed by the sensor array shown in Fig. 5;
  • Fig. 7B is a depiction of a change in the image of the finge ⁇ rint shown in Fig. 8 A that is
  • Fig. 8 is flowchart of exemplary processing performed on images to generate directional
  • Fig. 9 is a depiction of an alternative embodiment of the computer access
  • control/parameter control device of the present invention integrated with a document reader
  • Fig. 10 is a block diagram of a system in which the finge ⁇ rint imaging device of Fig. 6 is
  • Fig. 11 is a flowchart of an exemplary method to control access to a conference host
  • a relief object image generator that may be used to accomplish a practical
  • Relief object image generator 10 includes a single electrode electroluminescent device 12 and
  • the electrical current source has a lead 16 which is coupled to electroluminescent device 12, and a second lead 18 for coupling current to a relief object when it
  • electroluminescent device 12 generate light at intensities which correspond to the amount of
  • Elecfroluminescent device 12 may
  • planar electrodes which are mounted at opposite ends of the electroluminescent device so they
  • electroluminescent device with only one elecfrode and coupling a current source to the relief
  • the features of the relief object couple current differently to the electroluminescent device
  • Electroluminescent device 12 is formed with a slightly concave surface (Fig. 1A) to
  • a rounded relief object such as a fingertip
  • Elecfroliur ⁇ nescent device 12 may be an inorganic elecfroluminescent device or an
  • Organic electroluminescent device include thin sublimed
  • molecular films such as tris (8-quinolinolato) aluminum (III) commonly known as Alq or light-
  • the light-emitting polymers include poly (p-phenylene
  • Electroluminescent device 12 in Fig. 1 is an inorganic elecfroluminescent device.
  • Inorganic electroluminescent device 12 includes a fransparent elecfrode 22, a light emitting layer
  • Current source 16 is an alternating current (AC) source. Elecfrode
  • light emitting layer 24, and dielectric 26 are all preferably planar materials and are structured
  • electrode layer 22 has a first surface 30 which lies along one surface of light emitting
  • layer 24 and dielectric layer 26 has a first surface 34 which lies along the opposite planar surface
  • Lead 22 from alternating current source 14 is coupled to fransparent
  • elecfrode 22 and lead 18 extends from alternating current source 14 to a relief object 20.
  • the second lead may then
  • dielectric layer 26 may also be coupled to alternating source 14. In this arrangement lead
  • Transparent elecfrode 22 is, preferably, a polymeric material coated with a fransparent
  • Elecfrode 22 is transparent to permit light
  • Light emitting layer 24 may be a coating of light emitting particles applied and adhered to
  • the coating is preferably a
  • phosphor material such as zinc sulfidexopper (ZnS:Cu) although materials such as zinc
  • ZnS:Mn sulfide:manganese
  • light emitting particles may be used as well.
  • the light emitting layer is not a
  • the phosphor material may
  • insulating dielectric material such as barium titanate (BaTiO 3 ).
  • elecfroluminescent device are partially based on the interaction of the particles with and their
  • Some materials have physical properties that are manifested in
  • light emitting layer 24, and dielectric layer 26 are exemplary, they are not the only
  • transparent elecfrode 22 may also be made from zinc
  • ZnO:Al zinc oxide:aluminum
  • Zn 2 SiO 4 zinc silicate
  • the dielectric material may be from a variety of materials
  • yttrium oxide such as yttrium oxide, silicon nitride, or silicon oxy-nitride.
  • the dielectric material may be translucent, it is, preferably, substantially opaque.
  • This optical property blocks most of the ambient light that enters the dielectric layer. Because
  • the dielectric layer conducts the current generated by the relief object so it stimulates the light
  • an opaque dielectric layer permits the light sensed by the sensor array to be
  • the ambient light from the environment of the relief object primarily the light generated by the relief object.
  • the ambient light from the environment of the relief object primarily the light generated by the relief object.
  • relief object is attenuated by an opaque dielectric layer and does not generate optical noise that
  • dielectric layer 26 is not required in order to produce an
  • the finger being imaged possesses sufficient electrical capacitance that the finger can be imaged by an
  • inorganic single elecfrode elecfroluminescent device having a light emitting layer 24 with its
  • Alternating current source 14 may output a root-mean-square (RMS) voltage in the range
  • RMS microamperes
  • the light emitted by the phosphor and the materials disclosed above is within an emission
  • emission spectra may be used and remain within the principles of the present invention.
  • system 10 One way to construct system 10 is to modify the design of a known electroluminescent
  • layer 26 is bonded to an opaque elecfrode, such as aluminum, silver, or carbon.
  • an opaque elecfrode such as aluminum, silver, or carbon.
  • alternating current source is coupled to an EL lamp, the current passed from the opaque electrode
  • a relief object brought in contact with dielectric layer 26 may also be provided.
  • contact dielectric layer 26 provide current at a magnitude different from the current provided at
  • the dielectric layer/light emitting particles/transparent elecfrode structure may be
  • the capacitance of this structure is in the range of 2 to 6 nFarads
  • the resistance is in the range of 50 to
  • voltage of alternating current source 14 may be adjusted to alter the intensity of the emitted light
  • relief object is a portion of a person.
  • the light generated by the relief object image generator is governed by a complex
  • impedance may include capacitive, ion fransport, and resistive components and has been shown
  • elecfroluminescent device to conduct AC current and to illuminate a portion of the
  • the intensity of the illumination is proportional to the physical
  • the voltage amplitude may then be increased to
  • phosphor is strongly related to frequency with the optical illumination from an
  • relief object image intensity and confrast may be additionally optimized by
  • a system that includes an electroluminescent device which may be used without a current
  • Fig. 2 Using like numerals for like structure, system 40
  • system 40 includes a variable
  • the first lead 16 from alternating source 14 is coupled to transparent
  • Variable impedance layer 44 is comprised of a non-conducting, compressible polymeric
  • particles are distributed throughout the polymeric material and are separated from one another by
  • the conductive/capacitive electrode a distance which is slightly larger than the diameters of the particles.
  • particles may be low density polymeric or ceramic spheres coated with a metallic layer.
  • Magnetic particles may also be added to the composition of the variable impedance layer to
  • variable resistance layer 44 the impedance of a conductive path from one surface of variable resistance layer 44 to the opposite surface as a
  • function of pressure applied to the first surface may be designed to vary over a wide range.
  • conductive/capacitive particles and non-conductive metric polymers should be smaller than the
  • variable impedance layer 44 The thickness of variable impedance layer 44
  • resistance layer is in the range of 50-100 micrometers.
  • Variable impedance layers which may be
  • flexible electrode 46 is made of a thin polymer such as polypropylene or
  • polyester that is less than 25 micrometers in thickness and having a very thin sputtered metallic
  • impedance layer 44 to form a conductive path to dielectric layer 26. This conductive path allows
  • conductive paths in the areas adjacent valleys 52 have electrical impedance that is greater than
  • impedance layer 44 emits light having an intensity that is less than that generated by the more tightly compressed areas. Accordingly, an optical image of the
  • Flexible electrode 46 and impedance layer 44 provide a pressure-to-optical conversion of
  • the relief object do not affect the image generated by the device shown in Fig. 2. Furthermore,
  • flexible elecfrode 46 isolates the relief object from the current output by alternating current
  • impedance layer at 44 to dielectric layer 26 is primarily impedance, altering the amplitude of the
  • the electroluminescent device is shown in Fig. 3.
  • the elecfroluminescent device 60 includes an
  • anode 62 an organic layer 64, and a pixelated, low work function metalization layer 66.
  • anode 62 is fransparent and may be formed by coating a base substrate of glass or
  • Organic layer 64 is formed by depositing a thin film layer
  • a metal such as calcium or aluminum, is deposited over the polyanilene.
  • organic layer 64 to form pixelated, low work function metalization layer 66.
  • current is supplied to organic layer 64 to form pixelated, low work function metalization layer 66.
  • source 14 is a direct current (DC) source which outputs a voltage of approximately 10 V at
  • the relief object to be imaged is capable of absorbing relatively high voltage drops at
  • the relief object may be brought in contact with a lead
  • impedance layer is inte ⁇ osed between the relief object and the organic layer.
  • the ridges of the relief object generate a lower impedance path through the impedance layer than
  • a pixelated low work function metallic layer such as aluminum or
  • variable impedance layer electrically isolates the relief object from the current source to reduce
  • system 10 is aligned with a reduction lens 70 and an integrated circuit
  • Reduction lens 70 and integrated circuit sensor array 72 are well known in the
  • the system of the present invention reduces the size of the generated image so the
  • reduction lens 70 While the system of Fig. 4 depicts the use of a reduction lens to transfer the
  • image generated by an elecfroluminescent device to a sensor array other known optical elements may be used for the image fransfer including, but not limited to, reduction lens systems of other
  • reduction lens 70 may be eliminated and a sensor array 78 placed along
  • Sensor array 78 is typically
  • sensor array 78 may utilize
  • signals from these sensor arrays may then be provided to a computer, either embedded or
  • an elecfroluminescent device having a single, transparent elecfrode is
  • the second lead is
  • a relief object is brought into contact with the exposed
  • the current through the relief object is coupled, either sfrongly at the ridge contacts or
  • An alternative relief object image generator includes a variable impedance layer that
  • the first lead of the current source is
  • the second lead is coupled to the flexible electrode.
  • the ridges of the relief object compresses a portion of the impedance layer to form a conductive
  • the ridges have magnitudes that are greater than those through the conductive paths
  • elecfroluminescent device forms an optical image of the relief object where light areas
  • optical images of both embodiments may be focused by a reduction lens and
  • System 10 of Fig. 5 may be mounted in a keyboard of a computer as shown in Fig. 6.
  • Keyboard 100 is a typical QWERTY keyboard having function keys 104 and system 10, like the one shown in Fig. 5, is mounted under space bar 106 so a user can place a finger against exposed
  • object image generator 10 may include an organic or inorganic single elecfrode
  • elecfroluminescent device and the inorganic electroluminescent device may include or not
  • the image processor executes instructions stored in the memory 78 to receive and process an image of a user's finge ⁇ rint.
  • the image processor executes instructions stored in the image memory 78 to process an image of a user's finge ⁇ rint.
  • sensor array 78 by sensor array 78 to produce unique finge ⁇ rint descriptive information corresponding to the
  • optical image The descriptive information may then be stored or used for further processing or
  • the image processor and memory may be the processor and
  • processor and memory may be implemented in an
  • ASIC application specific integrated circuit
  • operation of the processor may be controlled by the operating system for the computer if the
  • the image processor compares a received image or descriptive
  • fixed memory applies to the memory
  • Portable memory is any information storage media or device which is not
  • the image processor includes, but is not limited to, printed data in the form of symbology, optical laser cards, smart chip cards, passive and active RF cards and magnetic stripe cards.
  • the image processor generates an access
  • a cursor confrol device such as a mouse
  • arrow keys, or system 10 may be mounted within a housing and coupled to a computer through
  • Host server 508 couples the plurality of users 504a-504d to a host conference server 508.
  • Host server 508 may be coupled directly to the open network, such as the Internet, or it may be indirectly coupled to the open network
  • the host server may be one that supports conferences
  • 504a-504d may be LBM PC compatible computers or the like having sufficient memory and
  • processor capability to support an open network browser 506 that typically supports a variety of
  • An application program 510 is also provided in
  • Such a finge ⁇ rint recognition program is
  • Finge ⁇ rint image data 582 or a set of identifying biometric data for authorized users may
  • the image data or biometric data are stored in an authorized user
  • a user personal identification number (PLN) 580 is stored at the host server 508.
  • a record 584 may be stored in a record 584 in association with the image or biometric data assoicated with a
  • the authorized user identifying data may be collected at retail stores of the sponsor of on ⁇
  • process begins with the user establishing a communication session with host server 508 for the
  • program 510 within computer 504a-504d images a relief object placed on the finge ⁇ rint imaging
  • the user's computer and host server 508 may use a public/private key
  • the server receives the user identification message, it parses the message and
  • the user identification data includes
  • a PLN or user name that may be used to point to a particular user in the user database maintained
  • a corresponding user record 584 may be located at the host server.
  • the identification dataset (such as image relief data) in
  • the record 584 compared to the identification dataset (such as the image relief data) extracted
  • image relief data for a user is substantially reduced because all records do not have to be
  • the identification dataset may be compared to all identification datasets stored in the authorized user database to determine
  • an access granted message is fransmitted to the computer from which the user
  • System 10 of the present invention may be coupled to or integrated into a computer
  • sensing circuitry may be coupled to the alternating current source to detect current being pulled
  • the sensing circuitry of the alternative embodiment may be
  • a power switch such as a relay or varistor, that is activated in response to current
  • the activated power switch applies electrical power to the sensor array
  • image processor for operation of the access control function. In response to the image processor
  • This embodiment maintains power to the access
  • confrol device and activates a power switch to apply power to the computer in response to the
  • the alternative embodiment includes
  • sensing circuitry that detects current being pulled from the alternating current source and a first
  • power switch is activated to apply power to the sensor array, memory, and image processor of
  • the access confrol device If the access confrol device generates an access granted signal then a
  • signal may be a binary signal or it may include information regarding the correspondence
  • the generated image data is generated by the generated image
  • data may identify a particular authorized user having image data stored in the memory of the
  • the access granted signal may contain identification of the authorized
  • an initialization module such as an initialization
  • the initialization module selects predetermined configuration data that
  • This configuration data may
  • signal may be provided to a computer coupled to the access confrol device through a LAN, WAN
  • the configuration data may be used in a
  • the access confrol device through a LAN, WAN or other known type of communication link.
  • the image processor may be used for
  • a person may place a finger on relief object image
  • the image processor may then provide that descriptive information as a
  • a remote site such as a bank processing center
  • corresponding descriptive information may also be used to access other information such as real ⁇
  • System 10 may be used to provide cursor control signals as well as access control.
  • embodiments of the present invention may also use relief object image generators that use other mechanisms for
  • movement may be detected by evaluating the image of a finge ⁇ rint. For example, the
  • finge ⁇ rint in Fig. 7A is a fairly full image of a finge ⁇ rint generated by a relief object image
  • cursor confrol using a relief object generator is shown in Fig. 8. That process is preferably
  • the process begins by determining whether an
  • Stabilization may be determined by (1)
  • the process determines if a
  • the image of the finger is substantially absent, i.e., a substantial portion of the sensor
  • the process determines whether the
  • swipe specific direction including up, down,
  • swipes including up/down, left/right, clockwise/counterclockwise, vice versa, or the like
  • Detecting intensity changes to generate confrol signals is especially appropriate for
  • confrol devices having a pressure-variable impedance coating where an operator triggers desired
  • impedance layer that intensifies the image.
  • the processor detects an image change and generates a control
  • Functions activated by multiple signals may be implemented by detecting repetitive crossings of the image intensity across a single threshold or a series of
  • a system comprised of a relief object image generator, sensor array 78 (or one of the
  • the image processor, and memory may be used to confrol
  • the image processor may detect
  • the operational parameter for the device or activate a component of the device For example, the
  • parameter confrol device of the present invention may be inco ⁇ orated in an automobile or an
  • the relief object image generator to generate an image of the finger that the image
  • the image processor detects and processes. As the image of the finger changes, the image processor
  • a selected device function or activate a device component.
  • a device component For example, such a system may be
  • Such a system may be used to confrol access to a device and then activate an initialization
  • access granted signal generated by the access control/operational parameter confrol device may
  • an initialization command file such as an initialization command file or hardware initialization controller such as a BIOS circuit, or an initialization module that includes a memory for the storage of parameter
  • the initialization module selects
  • This type of access confrol device may be used to initialize device components such as seat
  • the access granted signal generated by the image processor may be
  • a communication link which may be wired or wireless.
  • the operational confrol device may be used to select or activate a
  • the image processor may detect changes to the relief
  • object image as commands and generate confrol signals to select and adjust specific confrol
  • the corresponding right or left directional confrol signal may be used to increase or
  • parameter confrol device is exemplary only and the reader should appreciate that other types of parameters and greater numbers of operational parameters for a number of devices may be
  • a relief object image generator controlled by a system having a relief object image generator, a sensor array, an image processor,
  • elecfroluminescent device proximate a sensor array that is used to receive data from a writing
  • This embodiment builds upon the computer access, cursor confrol and computer
  • a conductive stylus is coupled to
  • the image is received by the sensor array, converted to electrical signals and then the
  • the stylus point may be determined by an image processor generating a composite image of the
  • the pressure of the stylus creates a
  • the access confrol/operational parameter confrol device In both of these embodiments, the access confrol/operational parameter confrol device
  • the computer accesses
  • confrol/parameter control device discussed above may be integrated with a document reader.
  • An exemplary embodiment of an integrated confrol device/document reader 900 is shown in Fig. 9.
  • the device includes an elecfroluminescent device 10, sensor array 902, fransparent substrate 906,
  • Elecfroluminescent device 10 may be fixedly separated or
  • 900 may be located near an edge of a computer housing (like device 38 in Fig. 6) so gap G is
  • elecfroluminescent device 10 may be pivotally or slideably mounted to the housing of a
  • one of elecfroluminescent device 10 and sensor array 902 is
  • array 902 and elecfroluminescent device 10 displaces the biased component or components as a
  • Transparent substrate 906 and external light source 910 are known components. Sensor
  • array 902 is a sensor array like the one described in U.S. Patent No. 5,349,174. This type of
  • sensor array has a plurality of elements arranged in a matrix on a fransparent substrate.
  • the partially-transparent sensor array is partially-fransparent.
  • sensor array 902 transparent
  • substrate 906, and external light source 910 may be used to image objects placed against or near
  • a function key may be depressed to activate light
  • Such a device may be used to image

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Image Input (AREA)

Abstract

La présente invention concerne un système (500) et un procédé d'utilisation d'un générateur (514) d'image d'objet en relief destiné à commander un curseur, un accès à un ordinateur, et un paramètre opérationnel. Le système (500) comprend un générateur (514) d'objet en relief, un réseau de capteur, un processeur d'image et une mémoire. Le générateur (514) génère des images d'objets en relief, telles que des empreintes digitales, amenés au voisinage de la surface exposée de ce générateur (514). Le processeur d'image reçoit l'image en provenance du réseau de capteur, traite l'image, et compare l'information descriptive résultante (582) à l'information stockée (518) qui correspond aux utilisateurs autorisés (504). Si une correspondance est trouvée, l'utilisateur se voit autorisé l'accès à l'ordinateur. Le processeur d'image peut aussi traiter l'image afin de déterminer le mouvement d'image ou la présence d'image, et l'absence d'image est utilisée en vue de générer des signaux de mise en évidence et de sélection. Ces signaux coïncident avec ceux générés à l'aide de dispositifs de souris connus de manière à ce que le système de la présente invention puisse remplacer un dispositif de variable de position dans le clavier d'un ordinateur portatif ou d'un autre ordinateur portable sans sacrifier la fonctionnalité du système. La présente invention concerne d'autres utilisations du système (500) comprenant des commandes de paramètres opérationnels de dispositif tels que la brillance et le contraste d'un écran d'affichage, ainsi que l'émission d'images d'objet en relief à des sites éloignés aux fins d'identification d'utilisateur (504).
PCT/US1999/017268 1998-07-30 1999-07-30 Procede et systeme de commande d'acces a des conferences sur ordinateur par utilisation d'objets en relief WO2000007115A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54612/99A AU5461299A (en) 1998-07-30 1999-07-30 Method and system for controlling access to computer conferences using relief objects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12654398A 1998-07-30 1998-07-30
US09/126,543 1998-07-30

Publications (1)

Publication Number Publication Date
WO2000007115A1 true WO2000007115A1 (fr) 2000-02-10

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EP1545300A4 (fr) * 2002-08-22 2009-04-22 Smiths Medical Pm Inc Combinaison empreinte digitale et dispositif d'oxymetrie
WO2017018921A1 (fr) * 2015-07-29 2017-02-02 Fingerprint Cards Ab Acquisition d'une image d'empreinte digitale

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US5229764A (en) * 1991-06-20 1993-07-20 Matchett Noel D Continuous biometric authentication matrix
US5615277A (en) * 1994-11-28 1997-03-25 Hoffman; Ned Tokenless security system for authorizing access to a secured computer system
US5764789A (en) * 1994-11-28 1998-06-09 Smarttouch, Llc Tokenless biometric ATM access system
US5805719A (en) * 1994-11-28 1998-09-08 Smarttouch Tokenless identification of individuals
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Publication number Priority date Publication date Assignee Title
EP1545300A4 (fr) * 2002-08-22 2009-04-22 Smiths Medical Pm Inc Combinaison empreinte digitale et dispositif d'oxymetrie
WO2005029298A3 (fr) * 2003-09-15 2005-11-17 Intel Corp Systeme informatique comprenant un ecran amovible
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US9600706B2 (en) 2015-07-29 2017-03-21 Fingerprint Cards Ab Acquisition of a fingerprint image

Also Published As

Publication number Publication date
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