Patents by Inventor Anton L. Baljet

Anton L. Baljet 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: 7002619
    Abstract: Systems including projection mechanisms, screens, and eyeglasses are detailed. The systems significantly reduce perceptible ghosting even when high contrast images (such as dark figures against a white background) are projected.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: February 21, 2006
    Assignee: Imax Corporation
    Inventors: David M. M. Dean, Paul D. Panabaker, Anton L. Baljet
  • Patent number: 5402191
    Abstract: Stereoscopic images are presented by alternately displaying corresponding left eye and right eye images in succession, substantially extinguishing transmission of light from the left eye images to the right eye of a viewer and from the right eye images to the left eye of the viewer, for example by the use of polarizing filters, and alternately and in synchronism with the alternate display of images, scattering unextinguished light from the left eye images that leaks through to the viewer's right eye and from the right eye images that leaks through to the viewer's left eye. In a preferred embodiment, scattering is achieved by using a liquid crystal scattering shutter that is electrically triggered in synchronism with the display of images. The shutter disperses the unextinguished light that leaks through the system so that no image information is perceived and the light appears merely as a slight increase in background illumination.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: March 28, 1995
    Assignee: Imax Corporation
    Inventors: David M. Dean, Paul D. Panabaker, Anton L. Baljet, Sayyid K. U. Hassan
  • Patent number: 5002387
    Abstract: An alternate eye 3-d projection system has a projector projecting alternate eye left and right images, has alternating eye 3-d glasses alternating between left and right lens transmissiveness, and has a phase delay unit synchronizing the left lens transmissiveness to left images and right lens transmissiveness to right images. A timing shutter is driven through a mechanical link to the projector primary mechanism at a frequency proportional to the frequency of the transition between images. A sensor outputs pulses according to the rotationally frequency of the timing shutter. The phase delay unit receives the pulses, a multiplier multiplies the frequency of the pulses, a phase lock loop locks on to the frequency and a counter counts the pulses. After a preset delay the counter outputs a pulse. The delay is adjustable. The counter pulse enables a 60 KHz oscillator. The oscillations are counted by another counter and passed to a transmitter.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: March 26, 1991
    Assignee: Imax Systems Corporation
    Inventors: Anton L. Baljet, Gerard C. Carter, Gordon W. Harris