Patents by Inventor Martin J. Richards

Martin J. Richards 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: 11070774
    Abstract: A dual-modulation projection system (100) includes a light source (102), a phase modulator (104), an amplitude modulator (106), and a controller (110) having temporal lightfield simulation capabilities (114). The phase modulator (104) spatially modulates a lightfield from the light source (102) to generate an intermediate image on the amplitude modulator (106). The amplitude modulator (106) spatially modulates the intermediate image to form a final image. The controller (110) models the phase state of the phase modulator (104) during transitions between phase modulator frames and generates lightfield simulations of the intermediate image during the transition. The controller (110) utilizes the lightfield simulations to generate and provide sets of amplitude drive values to the amplitude modulator (106) at a faster rate than that at which the phase modulator (104) is capable of switching.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: July 20, 2021
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Trevor Davies, Martin J. Richards, Barret Lippey, Juan P. Pertierra, Christopher John Orlick, Peter Francis Van Kessel
  • Publication number: 20210218938
    Abstract: A novel projection system includes first and second light sources (e.g., sets of lasers), a spatial light modulator (SLM) that receives light from the first light source, and a beam steering device that receives light from the second light source and steers the light to highlight regions of the SLM. The SLM then modulates the light from both light sources to generate a highlighted imaging beam which can then be projected on a viewing surface. The highlighted imaging beam can represent a highlighted 2D image or a highlighted left- or right-eye view of a 3D image. The projection system thus improves peak brightness in the displayed highlighted images without incorporating a separate highlight projector or other expensive equipment. Methods for highlighting projected images are also described.
    Type: Application
    Filed: January 21, 2021
    Publication date: July 15, 2021
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Martin J. Richards, Barret Lippey
  • Publication number: 20210211624
    Abstract: A projector controller includes an object detector and control electronics, and is configured to protect audience members from intense light imposing an exclusion zone in front of a projector. The object detector is configured to optically sense a presence of an object in a detection region beneath the exclusion zone and above the audience members. The control electronics is configured to control the projector when the object detector indicates the presence of the object in the detection region. A method for protecting audience members from intense light imposing an exclusion zone in front of an output of a projector includes: (i) optically sensing a presence of an object in a detection region between the exclusion zone and the audience members, and (ii) controlling the projector when the presence of the object is sensed in the detection region.
    Type: Application
    Filed: May 14, 2019
    Publication date: July 8, 2021
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: John Frederick ARNTSEN, Juan P. PERTIERRA, Martin J. RICHARDS, Barret LIPPEY, Christopher John ORLICK, Douglas J. GORNY
  • Patent number: 11042081
    Abstract: A novel projection system includes a base signal source, a highlight signal source, a base/highlight destination, and a shared optical element. A base signal provided by the base source and a highlight signal provided by the highlight source are combined by the shared optical element. In a particular embodiment, the base signal source and the highlight signal source each include a light source, a spatial light modulator, and optics, and the base/highlight destination includes optics and a spatial light modulator. In a more particular embodiment, the base signal source and the highlight source provide spatially modulated lightfields to the shared optical element. In another particular embodiment, the base signal and the highlight signal are modulated by the spatial light modulator of the base/highlight destination after being combined.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: June 22, 2021
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Juan P. Pertierra, Martin J. Richards, Barret Lippey, Nathan S. Wainwright, John D. Jackson
  • Publication number: 20210152792
    Abstract: Smaller halftone tiles are implemented on a first modulator of a dual modulation projection system. This technique uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to effectively increase the number of levels provided by a given tile size in the halftone modulator. It addresses the issue of reduced contrast ratio at low light levels for small tile sizes and allows the use of smaller PSFs which reduce halo artifacts in the projected image and may be utilized in 3D projecting and viewing.
    Type: Application
    Filed: November 30, 2020
    Publication date: May 20, 2021
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. RICHARDS, Jerome SHIELDS
  • Publication number: 20210141238
    Abstract: An optical filter to increase contrast of an image generated with a spatial light modulator includes a lens for spatially Fourier transforming modulated light from the spatial light modulator, and an optical filter mask positioned at a Fourier plane of the lens to filter the modulated light. The modulated light has a plurality of diffraction orders, and the optical filter mask transmits at least one of the diffraction orders of the modulated light and block a remaining portion of the modulated light. A method that improves contrast of an image generated with a spatial light modulator includes spatially Fourier transforming modulated light from the spatial light modulator onto a Fourier plane, and filtering the modulated light by transmitting at least one diffraction order of the modulated light at the Fourier plane and blocking a remaining portion of the modulated light at the Fourier plane.
    Type: Application
    Filed: April 1, 2019
    Publication date: May 13, 2021
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Juan Pablo Pertierra, Martin J. RICHARDS
  • Publication number: 20210124183
    Abstract: Shaped glasses have curved surface lenses with spectrally complementary filters disposed thereon. The filters curved surface lenses are configured to compensate for wavelength shifts occurring due to viewing angles and other sources. Complementary images are projected for viewing through projection filters having passbands that pre-shift to compensate for subsequent wavelength shifts. At least one filter may have more than 3 primary passbands. For example, two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional passbands may be utilized to more closely match a color space and white point of a projector in which the filters are used. The shaped glasses and projection filters together may be utilized as a system for projecting and viewing 3D images.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 29, 2021
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. Richards, Wilson Allen, Gary D. Gomes
  • Publication number: 20210112224
    Abstract: A novel high efficiency image projection system includes a beam-steering modulator, an amplitude modulator, and a controller. In a particular embodiment the controller generates beam-steering drive values from image data and uses the beam-steering drive values to drive the beam-steering modulator. Additionally, the controller utilizes the beam-steering drive values to generate a lightfield simulation of a lightfield projected onto the amplitude modulator by the beam-steering modulator. The controller utilizes the lightfield simulation to generate amplitude drive values for driving the amplitude modulator in order to project a high quality version of the image described by the image data.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 15, 2021
    Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL AB
    Inventors: Juan P. Pertierra, Martin J. Richards, Christopher John Orlick, Clement Le Barbenchon, Angelo M. Pires Arrifano
  • Patent number: 10969742
    Abstract: Dual or multi-modulation display systems are disclosed that comprise projector systems with at least one modulator that may employ non-mechanical beam steering modulation. Many embodiments disclosed herein employ a non-mechanical beam steering and/or polarizer to provide for a highlights modulator.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 6, 2021
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Douglas J. Gorny, Martin J. Richards
  • Publication number: 20210080737
    Abstract: A projector system comprising a laser light source, a collimating lens, a fly-eye lens, an integrating rod and a first modulator is disclosed. The light from a laser light source/fiber illuminates a collimator to substantially collimate the light and then is transmitted through a fly's-eye lens. The fly's-eye lens provides a desired angular/spatial light distribution for further processing to a first modulator of the projector system.
    Type: Application
    Filed: November 24, 2020
    Publication date: March 18, 2021
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. RICHARDS, Duane Scott DEWALD, Nathan WAINWRIGHT, Barret LIPPEY
  • Publication number: 20210047061
    Abstract: Dual and multi-modulator projector display systems and techniques are disclosed. In one embodiment, a projector display system comprises a light source; a controller, a first modulator, receiving light from the light source and rendering a halftone image of said the input image; a blurring optical system that blurs said halftone image with a Point Spread Function (PSF); and a second modulator receiving the blurred halftone image and rendering a pulse width modulated image which may be projected to form the desired screen image. Systems and techniques for forming a binary halftone image from input image, correcting for misalignment between the first and second modulators and calibrating the projector system—e.g. over time—for continuous image improvement are also disclosed.
    Type: Application
    Filed: June 23, 2020
    Publication date: February 18, 2021
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Jerome SHIELDS, Martin J. RICHARDS, Juan P. PERTIERRA
  • Patent number: 10908486
    Abstract: A novel light source for a 3D display system includes a plurality of left eye light emitters and a plurality of right eye light emitters. The left eye emitters include a broad spectral distribution emitter and an overlapping narrow spectral distribution emitter in each of the blue, green, and red color bands. Similarly, the right eye emitters include a broad spectral distribution emitter and an overlapping narrow spectral distribution emitter in each of the blue, green, and red color bands. The combined spectral distributions of each of the broad and narrow emitters provide a primary light for each color and for each eye that has a desirable spectral shape, including wide bandwidth and short tail(s). The invention thus minimizes cross-talk and speckling in left- and right-eye images of 3D display systems.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: February 2, 2021
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Barret Lippey, Martin J. Richards
  • Patent number: 10904495
    Abstract: A novel high efficiency image projection system includes a beam-steering modulator, an amplitude modulator, and a controller. In a particular embodiment the controller generates beam-steering drive values from image data and uses the beam-steering drive values to drive the beam-steering modulator. Additionally, the controller utilizes the beam-steering drive values to generate a lightfield simulation of a lightfield projected onto the amplitude modulator by the beam-steering modulator. The controller utilizes the lightfield simulation to generate amplitude drive values for driving the amplitude modulator in order to project a high quality version of the image described by the image data.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: January 26, 2021
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Juan P. Pertierra, Martin J. Richards, Christopher John Orlick, Clement Le Barbenchon, Angelo M. Pires Arrifano
  • Patent number: 10904496
    Abstract: A novel projection system includes first and second light sources (e.g., sets of lasers), a spatial light modulator (SLM) that receives light from the first light source, and a beam steering device that receives light from the second light source and steers the light to highlight regions of the SLM. The SLM then modulates the light from both light sources to generate a highlighted imaging beam which can then be projected on a viewing surface. The highlighted imaging beam can represent a highlighted 2D image or a highlighted left- or right-eye view of a 3D image. The projection system thus improves peak brightness in the displayed highlighted images without incorporating a separate highlight projector or other expensive equipment. Methods for highlighting projected images are also described.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 26, 2021
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. Richards, Barret Lippey
  • Publication number: 20210021794
    Abstract: A display for displaying image data includes defining virtual color gamuts based on a plurality of primary display colors associated with a light source. At least one of the virtual color gamuts is defined to approximate an established color gamut. Intensity values associated with the virtual color gamuts are generated based on received video data, and the intensity values associated with the virtual color gamuts are used to generate drive values for the primary colors of the light source. A display using one or more virtual color gamuts is also disclosed.
    Type: Application
    Filed: October 6, 2020
    Publication date: January 21, 2021
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Trevor DAVIES, Martin J. RICHARDS, Ashley PENNA
  • Patent number: 10855960
    Abstract: Smaller halftone tiles are implemented on a first modulator of a dual modulation projection system. This techniques uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to effectively increase the number of levels provided by a given tile size in the halftone modulator. It addresses the issue of reduced contrast ratio at low light levels for small tile sizes and allows the use of smaller PSFs which reduce halo artifacts in the projected image and may be utilized in 3D projecting and viewing.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: December 1, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. Richards, Jerome Shields
  • Patent number: 10845607
    Abstract: A projector system comprising a laser light source, a collimating lens, a fly-eye lens, an integrating rod and a first modulator is disclosed. The light from a laser light source/fiber illuminates a collimator to substantially collimate the light and then is transmitted through a fly's-eye lens. The fly's-eye lens provides a desired angular/spatial light distribution for further processing to a first modulator of the projector system.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: November 24, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Martin J. Richards, Duane Scott Dewald, Nathan Wainwright, Barret Lippey
  • Patent number: 10841545
    Abstract: An Acoustic-Optic A/O device receives light from a source and deflecting the light onto the second A/O device which may be a multi-stacked set of individual A/O devices. The first and second devices may deflected light according to control signals. Also, a multi-modulator projector display system including a light source, controller, an A/O modulator illuminated by the light source and capable of deflecting light according to controller signals, a second modulator illuminated by light from said A/O modulator and capable of modulating the A/O modulated light, said second modulator comprising a plurality of mirrors, and said second modulator capable of modulating the light according to controller signals.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 17, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Martin J. Richards
  • Publication number: 20200336713
    Abstract: A dual-modulation projection system (100) includes a light source (102), a phase modulator (104), an amplitude modulator (106), and a controller (110) having temporal lightfield simulation capabilities (114). The phase modulator (104) spatially modulates a lightfield from the light source (102) to generate an intermediate image on the amplitude modulator (106). The amplitude modulator (106) spatially modulates the intermediate image to form a final image. The controller (110) models the phase state of the phase modulator (104) during transitions between phase modulator frames and generates lightfield simulations of the intermediate image during the transition. The controller (110) utilizes the lightfield simulations to generate and provide sets of amplitude drive values to the amplitude modulator (106) at a faster rate than that at which the phase modulator (104) is capable of switching.
    Type: Application
    Filed: December 17, 2018
    Publication date: October 22, 2020
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Trevor Davies, Martin J. RICHARDS, Barret Lippey, Juan P. Pertierra, Christopher John Orlick, Peter Francis Van Kessel
  • Patent number: 10809543
    Abstract: 3D glasses include an absorptive layer in a single lens of the glasses. The absorptive layer may be specifically tailored for spectral separation characteristics of a 3D filter portion of the lens. The absorptive layer may be combined with, and work in conjunction with, interference layers of a lens while also operating separately as an absorber. The absorptive layer may include biometric variations and/or positive runout. The absorptive layer may selectively absorb more of one color than other colors. A balancing absorber may be included in an opposite eye channel.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: October 20, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Barret Lippey, Martin J. Richards