Patents by Inventor Daniel F. Maase

Daniel F. Maase has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8547426
    Abstract: Systems, apparatus, and methods for providing a micro-scanning system with low settle times for fingerprint image capture are provided. In one embodiment, a flexure apparatus includes a stiffening device and parallelogram structures. The flexure apparatus is configured to move an image sensor to different positions to capture images that can be used to form a composite image according to micro-scanning techniques. The stiffening device allows the resonant frequency of the flexure apparatus to be established at a higher level than the operation frequency of the flexure apparatus, minimizing the settle time required for the flexure apparatus.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: October 1, 2013
    Assignee: Identix Incorporated
    Inventors: John D. Hamre, Daniel F. Maase
  • Patent number: 8354640
    Abstract: Apparatus and methods for providing an optically based planar scanner for generating an image are provided. In one embodiment, the apparatus includes a switchable Bragg grating. An area of the switchable Bragg grating is configured to be activated to direct light to a platen. The platen is configured to reflect the light to a waveguide or to refract the light. The light reflected to the waveguide is guided to a light detector. By activating a number of the areas of the switchable Bragg grating and measuring the intensity of the light with a light detector, an image of an object contacting the platen may be formed.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: January 15, 2013
    Assignee: Identix Incorporated
    Inventors: John D. Hamre, Daniel F. Maase
  • Publication number: 20110063604
    Abstract: Apparatus and methods for providing an optically based planar scanner for generating an image are provided. In one embodiment, the apparatus includes a switchable Bragg grating. An area of the switchable Bragg grating is configured to be activated to direct light to a platen. The platen is configured to reflect the light to a waveguide or to refract the light. The light reflected to the waveguide is guided to a light detector. By activating a number of the areas of the switchable Bragg grating and measuring the intensity of the light with a light detector, an image of an object contacting the platen may be formed.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 17, 2011
    Applicant: IDENTIX INCORPORATED
    Inventors: John D. Hamre, Daniel F. Maase
  • Publication number: 20100315499
    Abstract: Systems, apparatus, and methods for providing a micro-scanning system with low settle times for fingerprint image capture are provided. In one embodiment, a flexure apparatus includes a stiffening device and parallelogram structures. The flexure apparatus is configured to move an image sensor to different positions to capture images that can be used to form a composite image according to micro-scanning techniques. The stiffening device allows the resonant frequency of the flexure apparatus to be established at a higher level than the operation frequency of the flexure apparatus, minimizing the settle time required for the flexure apparatus.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 16, 2010
    Applicant: IDENTIX INCORPORATED
    Inventors: Daniel F. Maase, John D. Hamre
  • Patent number: 5528355
    Abstract: An electro-optic palm scanner system employing a non-planar platen for obtaining high quality palmprints and heelprints. The platen includes an upper contact surface having a convex portion for contacting a palm to be imaged, and a planar portion for contacting the heel of the hand. The imaging system includes an optical carriage movably secured to a frame. The carriage supports a light source, lens system, and light detector. Total internal reflection occurs when light is incident on the platen at an angle greater than a critical angle of the platen, providing identifying information. The detector may include a linear CCD array which detects ridges and valleys in the hand to obtain image data. The image data is processed and the corresponding print of the heel or hand may be displayed on a video screen, and stored. The images of the palm and heel may be merged to form a single image.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: June 18, 1996
    Assignee: Idnetix Incorporated
    Inventors: Daniel F. Maase, Thomas F. Sartor