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Cable, GB
Adrian Cable, Harlton GB
| Patent application number | Description | Published |
|---|---|---|
| 20100014134 | HOLOGRAPHIC IMAGE DISPLAY SYSTEM - This invention relates to holographic image display systems, and to related methods and processor control code. We describe a method of displaying an image holographically, the method including: inputting display image data defining said image for display; processing said image data to determine first image data representing a first spatial frequency portion of said image data and second image data representing a second spatial frequency portion of said image data, wherein said second spatial frequency is higher than said first spatial frequency; displaying a hologram of said first image data on a spatial light modulator (SLM) to form a holographically-generated intermediate real image; modulating said intermediate real image using said second image data to display said image. | 01-21-2010 |
Adrian Cable, Hertfordshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20090002787 | Holographic Display Devices - This invention relates to electronic devices incorporating a holographic projector. A holographic projection module for a consumer electronic device, the holographic projection module comprising: at least one substantially monochromatic light source ( | 01-01-2009 |
| 20090128459 | Image Processing Systems - This invention generally relates to image processing systems, and more particularly to systems and methods for displaying images using multi-line addressing (MLA) or total matrix addressing (TMA) techniques, with reduced noise. Embodiments of the invention are particularly useful for driving OLED (organic light emitting diode) displays. A method of driving an electroluminescent display to display an image, the method comprising: inputting image data for said image; determining, using said image data, a first set of image subframe data for a first plurality of image subframes each representing a common spatial portion of said image, wherein said first plurality of image subframes combine to approximate said common spatial portion of said image; driving said display using said first set of image subframe data; determining, using said image data, a second set of image subframe data for a second plurality of image subframes each representing said common spatial portion of said image, wherein said second plurality of image subframes combine to approximate said common spatial portion of said image; and driving said display using said second set of image subframe data | 05-21-2009 |
Adrian Cable, Cambridgeshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20090322738 | METHODS AND APPARATUS FOR DISPLAYING IMAGES USING HOLOGRAMS - We describe a method of generating data for displaying an image defined by a plurality of holographically generated subframes for display sequentially in time to give the impression of said image, the method including: receiving data for said image for display; determining holographic data for a said subframe from target image data at a first spatial resolution derived from said received data; converting said holographic data to image subframe data for display to generate a said holographic subframe, said image subframe data having a second spatial resolution lower than said first spatial resolution; generating reconstructed image data at said first spatial resolution from said image subframe data, said reconstructed image data representing said displayed holographic subframe; adjusting said target image data using said reconstructed image data; and determining holographic data and image subframe data for a subsequent said subframe using said adjusted image data. | 12-31-2009 |
Adrian Cable, Cambridge GB
| Patent application number | Description | Published |
|---|---|---|
| 20090219380 | METHODS AND APPARATUS FOR DISPLAYING IMAGES USING HOLOGRAMS - The invention relates to method, computer program code and signal processing/image display systems for displaying one or more images using holographic techniques. We describe a method of generating data for displaying an image defined by displayed image data using a plurality of holographically generated temporal subframes, the temporal subframes being displayed sequentially in time such that they are perceived as a single noise-reduced image. The method includes generating from the displayed image data holographic data for each subframe of said set of subframes such that successive replay of holograms defined by said holographic data for said subframes gives the appearance of said image, and wherein the method further includes, when generating said holographic data for a said subframe, compensating for noise in said displayed image arising from one or more previous subframes of said sequence of holographically generated subframes. | 09-03-2009 |
| 20100085276 | HOLOGRAPHIC IMAGE DISPLAY SYSTEMS - This disclosure relates to methods, apparatus, and computer program code for the holographic display of images. We describe a method of displaying an image holographically. The method includes: dividing the image into a plurality of spatial tiles; and displaying, for each tile in rapid succession, at least one hologram to reproduce an image of the tile, to give the impression of the plurality of tiles together; and wherein the method also includes controlling a shutter spatial light modulator (SLM) in a replay field of the holograms such that when each tile is displayed light for the others of the plurality of tiles is substantially blocked. | 04-08-2010 |
Adrian J. Cable, Cambridge GB
| Patent application number | Description | Published |
|---|---|---|
| 20110248963 | Touch Sensitive Image Display - We describe a touch sensitive image display device for projecting a touch sensitive displayed image at an acute angle onto a surface on which the device is placed. The device comprises: light sources to project two-dimensional first and second light distributions in respective first and second planes; and a multi-pixel sensor system to remotely detect touch of an area of said surface within or adjacent to the displayed image by detecting light from the first distribution to provide a detected touch signal. The multi-pixel sensor system also remotely detects presence of an object within the second light distribution to provide a detected presence signal. The device is configured to multiplex projection of the first light and second distributions. A controller has an input to receive the detected touch and detected presence signals and is configured to control the device responsive to these signals. | 10-13-2011 |
Adrian James Cable, Cambridge GB
| Patent application number | Description | Published |
|---|---|---|
| 20100097673 | HOLOGRAPHIC IMAGE DISPLAY SYSTEMS - This invention relates to methods and apparatus for the holographic display of images. We describe a method of compensating for spatial phase non-uniformities in a holographic image display system, the system including a substantially coherent light source illuminating an SLM ( | 04-22-2010 |
| 20110157667 | Holographic Image Display Systems - The invention relates to holographic head-up displays, to holographic optical sights, and also to 3D holographic image displays. We describe a holographic head-up display and a holographic optical sight, for displaying, in an eye box of the display/sight, a virtual image comprising one or more substantially two-dimensional images, the head-up display comprising: a laser light source; a spatial light modulator (SLM) to display a hologram of the two-dimensional images; illumination optics in an optical path between said laser light source and said SLM to illuminate said SLM; and imaging optics to image a plane of said SLM comprising said hologram into an SLM image plane in said eye box such that the lens of the eye of an observer of said head-up display performs a space-frequency transform of said hologram on said SLM to generate an image within said observer's eye corresponding to the two-dimensional images. | 06-30-2011 |
| 20110251905 | Touch Sensitive Holographic Displays - We describe a touch sensitive holographic image display device for holographically projecting a touch sensitive image at an acute angle onto a surface on which the device is placed. The device includes holographic image projection optics comprising at least one coherent light source illuminating a spatial light modulator (SLM), output optics to project a hologram onto an acute angle surface, and a remote touch sensing system to remotely detect a touch of a location within or adjacent to the holographically displayed image. A control system is configured to provide data defining an image for display, to receive detected touch data, and to control the device responsive to remote detection of a touch of a the displayed image. | 10-13-2011 |
Adrian James Cable, Cambridgeshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20090219591 | METHODS AND APPARATUS FOR DISPLAYING COLOUR IMAGES USING HOLOGRAMS - We describe a method of projecting a colour image on a screen holographically. The method includes: inputting colour image data including data for at least two colour planes of said image, a first, longer wavelength colour plane and a second, shorter wavelength colour plane; generating data for respective first and second holograms from said first and second colour planes, said first hologram having a greater resolution than said second hologram; and displaying said first and second holograms in turn on a common spatial light modulator (SLM) illuminated by light of respective said first and second wavelengths to project said colour image onto said screen; and wherein a scaling in resolution between said first and second holograms is dependent on scaling between said first and second wavelengths such that, when projected on said screen pixels of said image generated by said first and second holograms have substantially the same pitch. | 09-03-2009 |
| 20090257104 | Hologram Viewing Arrangement and Alignment Device - The present invention relates to a hologram viewing arrangement, to an alignment device, to a display device, to a device for aligning first and second members and to a device for aligning an optical beam with a desired target. A hologram viewing arrangement comprising a pixellated phase mask substrate ( | 10-15-2009 |
| 20100277566 | HOLOGRAPHIC IMAGE DISPLAY SYSTEMS - We describe a method of displaying an image holographically using a spatial light modulator (SLM), the SLM having a plurality of pixels, the method including: displaying a diffraction pattern on the pixels of the SLM; and illuminating the pixels such that light diffracted by said diffraction pattern on the SLM pixels includes a content of said displayed image. A variation in brightness of said displayed image across the displayed image is modulated by an intensity envelope determined by the diffraction pattern of an individual said pixel, for example a sinc envelope. The method further includes moving a peak or centre of gravity of the intensity envelope away from a zero order spot and towards a centre of the displayed image by imposing a pattern of phase delay across the SLM pixels, the pattern of phase delay repeating at a spatial interval corresponding to a pixel interval of the SLM. | 11-04-2010 |
Adrian James Cable, Harlton GB
| Patent application number | Description | Published |
|---|---|---|
| 20100142016 | HOLOGRAPHIC IMAGE PROJECTION SYSTEMS - We describe a holographic image projection system for projecting an image at an acute angle onto a surface, the system including: a spatial light modulator (SLM) to display a hologram; an illumination system to illuminate said displayed hologram; projection optics to project light from said illuminated displayed hologram onto said surface at an acute angle form said image; and a processor having an input to receive input image data for display and an output to provide hologram data for said SLM, wherein said processor is configured to: input image data and convert this to target image data; generate from said target image data hologram data for display as a hologram on the SLM to reproduce a target image; and wherein said target image is distorted to compensate for said projection of said hologram at an acute angle to form said image. | 06-10-2010 |
| 20110002019 | HOLOGRAPHIC IMAGE DISPLAY SYSTEMS - The invention relates to techniques for speckle reduction in holographic optical systems, in particular holographic image display systems. We describe a holographic image display system for displaying an image holographically on a display surface, the system including: a spatial light modulator (SLM) to display a hologram; a light source to illuminate said displayed hologram; projection optics to project light from said illuminated displayed hologram onto said display surface to form a holographically generated two-dimensional image, said projection optics being configured to form, at an intermediate image surface, an intermediate two-dimensional image corresponding to said holographically generated image; a diffuser located at said intermediate image surface; and an actuator mechanically coupled to said diffuser to, in operation, move said diffuser to randomise phases over pixels of said intermediate image to reduce speckle in an image displayed by the system. | 01-06-2011 |
Martin Cable, Cambridgeshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20080228175 | Medical device - The invention provides a medical device with a retention section for anchoring the medical device in the body of a living being, a drainage section for draining fluids from the body, e.g. urine, and a tip which facilitates insertion into the body. During the anchoring of the medical device, the tip is retracted toward a proximal end of the device, improving the users control over the position of the tip relative to other parts of the device and achieving the free flow of fluids through the device. An indicator may be provided to give a visual, audible, or tactile indication of at least a first position of the tip relative to the remaining part of the medical device. | 09-18-2008 |