Patents by Inventor Josh Greer

Josh Greer 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).

  • Publication number: 20090128620
    Abstract: A method for demultiplexing frames of compressed image data is provided. The image data includes a series of left compressed images and a series of right compressed images, the right compressed images and left compressed images compressed using a compression function. The method includes receiving the frames of compressed image data via a medium configured to transmit images in single frame format, and performing an expansion function on frames of compressed image data, the expansion function configured to select pixels from the series of left compressed images and series of right compressed images to produce replacement pixels to form a substantially decompressed set of stereo image pairs. Additionally, a system for receiving stereo pairs, multiplexing the stereo pairs for transmission across a medium including single frame formatting, and demultiplexing received data into altered stereo pairs is provided.
    Type: Application
    Filed: September 29, 2008
    Publication date: May 21, 2009
    Inventors: Lenny Lipton, Robert Akka, Matt Cowan, Josh Greer
  • Patent number: 7477206
    Abstract: A method and system for use in conjunction with a push-pull liquid crystal modulator system for creating circularly polarized light of alternating handedness is provided. The method and system comprise a pair of surface mode liquid crystal cells and a driver electrically coupled to the cells. The driver is configured to move an electrical charge using a quenching pulse comprising a relatively brief voltage spike at a beginning of a waveform period. Multiple additional improvements are provided, including reducing the thickness of the LC gap (the distance between cell electrode plates), creating a charge connection or wiring connection to the cell electrodes, employing anti-reflection coating technology, thinner ITO and ITO index matched to the LC material, bonding all possible air to material surfaces, using superior glass, employing more efficient polarizers, and reducing projector blanking time.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: January 13, 2009
    Assignee: Real D
    Inventors: Matt Cowan, Josh Greer, Lenny Lipton, Joseph Chiu
  • Publication number: 20080143964
    Abstract: A system and method for projecting stereoscopic images using a multiple projector arrangement is provided. The design comprises transmitting a first field train from the first projector, the first field train comprising first projector left and right images and concurrently transmitting a second field train from the second projector, the second field train comprising second projector left and right images. The first projector left image is transmitted by the first projector at substantially a same time as the second projector right image is transmitted by the second projector. Alternately, the design comprises transmitting a first field train from the first projector, the first field train comprising first projector left images alternating with first projector right images, and concurrently ransmitting a second field train from the second projector, the second field train comprising second projector left images alternating with second projector right images. A quasi-interlacing technique is also provided.
    Type: Application
    Filed: October 18, 2006
    Publication date: June 19, 2008
    Inventors: Matt Cowan, Josh Greer, Lenny Lipton
  • Publication number: 20070258138
    Abstract: A method and system for use in conjunction with a push-pull liquid crystal modulator system for creating circularly polarized light of alternating handedness is provided. The method and system comprise a pair of surface mode liquid crystal cells and a driver electrically coupled to the cells. The driver is configured to move an electrical charge using a quenching pulse comprising a relatively brief voltage spike at a beginning of a waveform period. Multiple additional improvements are provided, including reducing the thickness of the LC gap (the distance between cell electrode plates), creating a charge connection or wiring connection to the cell electrodes, employing anti-reflection coating technology, thinner ITO and ITO index matched to the LC material, bonding all possible air to material surfaces, using superior glass, employing more efficient polarizers, and reducing projector blanking time.
    Type: Application
    Filed: May 8, 2006
    Publication date: November 8, 2007
    Inventors: Matt Cowan, Josh Greer, Lenny Lipton, Joseph Chiu
  • Publication number: 20070188602
    Abstract: A method and system for projecting linearly polarized stereoscopic images to a viewer that results in increased viewer head-tipping capabilities is provided. The design includes projecting linearly polarized light energy toward a screen and providing the viewer with a set of linearly polarized eyewear configured to receive the linearly polarized light energy projected to the screen and transmit a right perspective view to a right eye of the viewer and a left perspective view to a left eye of the viewer. Projecting comprises performing a noise reduction technique to reduce crosstalk in linearly polarized light energy images projected.
    Type: Application
    Filed: April 11, 2007
    Publication date: August 16, 2007
    Inventors: Matt Cowan, Josh Greer, Lenny Lipton
  • Publication number: 20070177007
    Abstract: An apparatus comprising a selection device and a multiple mode display device is disclosed. The multiple mode display device comprises a lens sheet comprising a plurality of individual lenticules forming a lenticular surface, an electro-optical modulator positioned adjacent the lens sheet, and a display device comprising a display surface. Alternatively, a multiple mode display arrangement is disclosed, comprising a lens sheet comprising a plurality of individual lenticules forming a lenticular surface and a display device comprising a display surface. The display device is positioned behind the lens sheet, thereby enabling viewing images transmitted in at least a planar mode and a stereoscopic mode.
    Type: Application
    Filed: January 27, 2006
    Publication date: August 2, 2007
    Inventors: Lenny Lipton, Josh Greer
  • Publication number: 20070109401
    Abstract: An autostereoscopic system is provided. The autostereoscopic system comprises a video source configured to provide video content in a video source format and a monitor system coupled to the video source and configured to receive the video content in the video source format. The monitor system comprises an interdigitation module configured to receive the video content in the video source format and interdigitate the video content in the video source format into an autostereoscopic image, a video rendering module coupled to the interdigitation module configured to receive the autostereoscopic image from the interdigitated module and provide a rendered autostereoscopic image, a display coupled to the video rendering module and configured to receive the rendered autostereoscopic image, and a lenticular screen held in juxtaposition with the display. Temperature compensation may be employed within the system.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 17, 2007
    Inventors: Lenny Lipton, Josh Greer
  • Publication number: 20060268104
    Abstract: A method and system for reducing ghost images in plano-stereoscopic image transmissions is provided. The method comprises establishing a plurality of expected ghosting profiles associated with a plurality of predetermined regions on a screen, and compensating for leakage in each predetermined region of a projected left and right eye images by removing an amount of ghost images leaking from the projected left eye image into the projected right eye image and vice versa. The system comprises a processor configured to receive the quantity of ghost artifacts and compute ghost compensation quantities for left eye images and right eye images. The processor is further configured to remove an amount of actual image ghost artifacts leaking from a projected left eye image into a projected right eye image and vice versa.
    Type: Application
    Filed: May 25, 2006
    Publication date: November 30, 2006
    Inventors: Matt Cowan, Josh Greer, Lenny Lipton