Patent Marketplace: Optics-Displays Patents for Sale
Three-Dimensional Viewing of a Display: Three U.S. Patents, Two Japanese Patents and Two European Patents, plus Two U.S. and One Japanese Patent Application
This exciting portfolio covers technology related to three-dimensional display apparatus viewing. The technology includes:
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3D content production and delivery
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Augmented reality
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Military/Aerospace simulations
This portfolio provides global coverage as it consists of U.S. Patent Nos. 5,822,177, “System for Three-Dimensional Viewing Including First and Second Light Polarization Layers,” 6,252,707, “System for Three-Dimensional Viewing and Projection,” and 7,190,518, “Systems for and Methods of Three Dimensional Viewing” The portfolio also includes two Japanese Patents and Two European Patents, as well as two U.S. Patent Applications and one Japanese Patent Application.
Traditional 3D displays either required the viewer to wear uncomfortable and cumbersome eyeglasses or greatly restrict the viewing angle required to view 3D images and video sequences. The technology disclosed in the portfolio helps to overcome this drawback by using two polarized layers, wherein one layer is responsible for presenting images to the right eye and the other layer presents images to the left eye. The rate of display of images to the eyes is so controlled that images are alternately presented to each eye of the viewer, thus allowing the viewer to compose a stereoscopic image by combining the images received by both eyes.
The technology includes eye-tracking techniques coupled with controlling apparatuses which provide high quality experience even if the viewer shifts or moves while watching the 3D content as the display is adjusted according to the position of the viewer’s eyes. With such features, this technology provides a significant upgrade and addresses a long-felt need of the market to provide eyeglass-free 3D content with a wide viewing angle.
Interactive Advertising: U.S. Patent No. 8,077,914 “Optical tracking apparatus using six degrees of freedom”
This patent covers a technology for gathering consumer information. It is a used for interactive advertising and has applications for retailers, game console designers, surveillance and teleconferencing equipment developers, and the military. It includes a real-time bright pupil detection tracker that recognizes on-lookers of a predefined object. An optical eyeball tracking apparatus uses six degrees of freedom: three translational and three angular coordinates that can be integrated into any location to gather consumer behavior.
This invention performs object locking and tracking. A single camera and two off-axis light sources are engaged. For more precise object tracking, two separate cameras and a single diode are used. In another embodiment, a third camera may be used to separate the locking and tracking tasks. The light sources may have different light wavelengths and may operate in a sequential mode. The cameras may be sensitive over different spectral ranges and may also differ in terms of field-of-view and resolution. This allows advertisers to make informed decisions and quantify ROI.
For more information about this patent, contact Rich Ehrlickman at rich@ipofferings.com or 845-368-8300.
Virtual TV (VTV) System Portfolio: U.S. Patent Nos. 7,688,346 and 7,719,563, and US patent application 12/732,671)
The portfolio covers a novel virtual television system that provides a 360° panoramic display in an augmented reality environment. The system includes an array of real-time image and video-capturing devices capable of capturing panoramic images/videos. The captured images/videos are transmitted to multiple dynamically controllable viewports featuring viewing angles up to a full 360° panoramic view. Based on user control, a viewer can dynamically change the apparent orientation of the images or videos (i.e. the orientation of the Virtual Camera).
This portfolio is a potential asset for companies engaged in:
- Panoramic camera technology
- Optical tracking technology where the tracking system may be mobile with an embedded camera that acts as a sensor (for example, a remote control with an embedded sensor camera)
- Virtual reality, augmented reality, or audio/ visual technologies such as spatial sound
Optical Fibres - Portfolio of Five Patent Families - 28 Granted Patents and Applications: U.S. Patent Nos. 5,721,615, 6,547,982, 7,338,615, 6,389,187, 6,621,956, 6,797,057 and 7,734,137
Optical Fibres and Photonic Materials and their manufacturing processes are a major part of the rapidly expanding optical fibre sensors and comms areas.
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The global market size for optical fibre sensors is been estimated at $1.6 billion for 2014, up from $250 million in 2007.
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An important application for photonic materials, nanophotonics, is estimated at $3.6 billion by 2014.
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IP focused on the novel structures and manufacture of the devices and components, with the aim of minimising various well known problems
Display Patents (QinetiQ): U.S. Patent Nos. 6,864,944, 7,257,007, 6,812,909, 7,061,463, 6,762,873, 6,930,692, 6,690,4446,930,693
This patent portfolio describes improvements to existing display technologies. The eight patents in this portfolio seek to overcome various limitations of current displays by providing dc balance, better grayscale resolution, higher mechanical strength, and better pixel resolution for displays. Potential application areas for the Qinetiq portfolio include CCD and CMOS sensors, LCD displays, AMOLED, OLED, 3D displays, and other integrated optics circuits.
These patents are applicable to:
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TFT (thin film transistor) LCD: Current large-area LC displays used in flat-panel TVs, laptops, etc.
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FLCOS (ferro-electric LCOS) for high speed switching
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DMD (digital micromirror device) or DLP
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CMOS Imager sensor for digital photography
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Plasma: Current large-area flat-panel display for TV and display-board
Phoretic: For e-readers, flexible displays, and low-power cell phones
Optical Disc Servo Technology (DataPlay): 53 U.S. Patents, Two Applications and One Foreign Patent
This portfolio has many patents that cover functions that derive from the use of All Digital Servo as well as patents that patent the basic all-digital concepts. The secondary functions include such elements as adaptive calibration, methods to optimize and seek and jump activities, specialized spin motor control, ways to enhance the handling of defects and off-track problems, and ways to enhance tracking and focus servo performance.
| Issued U.S. Patents | |||
| Patent No. | Title | App. Date | Grant Date |
| 7,839,729 | Digital Servo for Optical Disk Drive | 10-Sep-01 | 23-Nov-10 |
| 6,728,182 | Tracking and Focus Servo System with Writeable-to-Mastered and Mastered-to-Writeable Boundary Crossing Detector | 10-Sep-01 | 27-Apr-04 |
| 6,738,320 | System and Method for Moving Optical Pick Up from Current Position to Target Position with Smooth Control | 10-Sep-01 | 18-May-04 |
| 6,741,530 | System and Method for Coordinating Time Critical and Non-Time Critical Tasks in a Control System for an Optical Disc Drive | 10-Sep-01 | 25-May-04 |
| 6,762,980 | Digital Tracking Servo System with Multi-Track Seeking and Accelerated Servo Function for Regaining a Closed Tracking Loop | 10-Sep-01 | 13-Jul-04 |
| 6,781,929 | Digital Tracking Servo System with Multi-Track Seek with an Acceleration Clamp | 10-Sep-01 | 24-Aug-04 |
| 6,809,995 | Digital Focus and Tracking Servo System | 10-Sep-01 | 26-Oct-04 |
| 6,813,226 | Calibration of Focus Sum Threshold in a Focus Servo System | 10-Sep-01 | 2-Nov-04 |
| 6,813,228 | Tracking and Focus Servo System with Direction Sensor | 10-Sep-01 | 2-Nov-04 |
| 6,847,596 | Tracking Servo System Including a Multi-Track Seek Algorithm with a Track Zero Crossing Period Integrity Test | 10-Sep-01 | 25-Jan-05 |
| 6,847,597 | Optical Disk Drive with a Digital Focus and Tracking Servo System | 10-Sep-01 | 25-Jan-05 |
| 6,882,601 | Digital Servo System with Feed-Forward Control Loops | 10-Sep-01 | 19-Apr-05 |
| 6,882,603 | Digital Tracking and Focus Servo System with Tracking Skate Detection | 10-Sep-01 | 19-Apr-05 |
| 6,885,619 | Detector Input Stray Light Offset Calibration in an Optical Disk Drive | 10-Sep-01 | 26-Apr-05 |
| 6,885,620 | System and Method for Recovering from Performance Errors in an Optical Disc Drive | 10-Sep-01 | 26-Apr-05 |
| 6,891,781 | Digital Servo System with Second Order Compensator | 10-Sep-01 | 10-May-05 |
| 6,891,789 | Tracking and Focus Servo System with Automatic Media Type Detector | 10-Sep-01 | 10-May-05 |
| 6,898,164 | Close Tracking Algorithm in a Digital Tracking Servo System | 10-Sep-01 | 24-May-05 |
| 6,904,007 | Digital Servo System with Loop Gain Calibration | 10-Sep-01 | 7-Jun-05 |
| 6,906,985 | Calibration of Tracking Error Signal Gain in a Tracking Servo System | 10-Sep-01 | 14-Jun-05 |
| 6,909,676 | Digital Tracking Servo System Multi-Track Seek with Track Zero Crossing Detection | 10-Sep-01 | 21-Jun-05 |
| 6,922,380 | Tracking and Focus Servo System with Anti-Skate Algorithm | 10-Sep-01 | 26-Jul-05 |
| 6,930,963 | Tracking and Focus Servo System with Head Load | 10-Sep-01 | 16-Aug-05 |
| 6,937,543 | Digital Focus Servo System with a Sliding Notch Filter | 10-Sep-01 | 30-Aug-05 |
| 6,950,380 | Detector Input Dark Current Offset Calibration in an Optical Disk Drive | 10-Sep-01 | 27-Sep-05 |
| 6,956,797 | Digital Servo System with Error Signal Integrity Testing | 10-Sep-01 | 18-Oct-05 |
| 6,958,957 | Digital Tracking and Focus Servo System with TES-FES Crosstalk Calibration | 10-Sep-01 | 25-Oct-05 |
| 6,958,963 | System and Method for Handling Events in an Optical Disc Drive | 10-Sep-01 | 25-Oct-05 |
| 6,963,524 | System and Method for Controlling Interrupts in a Control System for an Optical Disc Drive | 10-Sep-01 | 8-Nov-05 |
| 6,965,547 | Tracking and Focus Servo System with Error Signal Inverse Non-Linearity Calibration | 10-Sep-01 | 15-Nov-05 |
| 6,970,403 | Calibration of Tracking Error Signal Offset in a Tracking Servo System | 10-Sep-01 | 29-Nov-05 |
| 6,970,410 | Focus Detection in a Digital Focus Servo System | 10-Sep-01 | 29-Nov-05 |
| 6,977,873 | System and Method to Adjust the Level of Re-Calibration Effort Based on Disc Drive Performance | 10-Sep-01 | 20-Dec-05 |
| 7,016,280 | Tracking and Focus Servo System with Defect Detection | 10-Sep-01 | 21-Mar-06 |
| 7,020,054 | Digital Servo System with Biased Feed-Forward | 10-Sep-01 | 28-Mar-06 |
| 7,023,766 | Flexible Servicing of Servo Algorithms Using a Digital Signal Processor | 10-Sep-01 | 4-Apr-06 |
| 7,023,776 | Calibration Initiation Methods for a Tracking and Focus Servo System | 10-Sep-01 | 4-Apr-06 |
| 7,038,988 | System and Method for Controlling Time Critical Operations in a Control System for an Optical Disc Drive | 10-Sep-01 | 2-May-06 |
| 7,054,242 | System and Method for Controlling Focus in an Optical Disc Drive | 10-Sep-01 | 30-May-06 |
| 7,057,983 | System and Method for Controlling Tracking and Seeking in an Optical Disc Drive | 10-Sep-01 | 6-Jun-06 |
| 7,092,322 | Calibration of Focus Error Signal Offset in a Focus Servo System | 10-Sep-01 | 15-Aug-06 |
| 7,095,683 | Tracking and Focus Servo System with Write Abort | 10-Sep-01 | 22-Aug-06 |
| 7,095,685 | System and Method for Detecting and Recovering from an Off-Format State in an Optical Disc Drive | 10-Sep-01 | 22-Aug-06 |
| 7,116,621 | System and Method for Handling Commands in an Optical Disc Drive | 10-Sep-01 | 3-Oct-06 |
| 7,196,979 | Calibration Storage Methods for a Digital Focus and Tracking Servo System with Calibration | 10-Sep-01 | 27-Mar-07 |
| 7,260,031 | Digital Focus and Tracking Servo System with One-Track Jump | 10-Sep-01 | 21-Aug-07 |
| 7,414,940 | Calibration of a Focus Error Signal Gain in a Focus Servo System | 10-Sep-01 | 19-Aug-08 |
| 7,492,675 | Digital Servo System with Calibrated Notch Filters | 10-Sep-01 | 17-Feb-09 |
| 7,522,480 | Digital Tracking Servo System with Multi-Track Seeking with an Acceleration Clamp | 10-Sep-01 | 21-Apr-09 |
| 7,593,300 | Digital Tracking Servo System with Off-Format Detection | 10-Sep-01 | 22-Sep-09 |
| 7,672,199 | Close Focus Algorithm in a Digital Focus Servo System | 10-Sep-01 | 2-Mar-10 |
| 7,678,004 | Digital Servo System with Inverse Non-Linearity Compensation | 10-Sep-01 | 16-Mar-1024-Aug-10 |
| 7,782,721 | Digital Focus and Tracking Servo System with Multi-Zone Calibration | 10-Sep-01 | |
| Issued Foreign Patent | |||
| Patent No. | Title | App. Date | Grant Date |
| I277079 | Digital Focus and Tracking Servo System | 25-Jan-01 | 21-Mar-07 |
| Two Pending Patent Applications | ||||
| Docket No. | Title | Application No. | App. Date | Action Description |
| 70103.35 | Digital Augmentation for an Analog Controller | 61/352,796 | 8-Jul-10 | Provisional filed 6/8/10 |
| 70103.352 | Open Loop Repeatable Runout Correction | 61/353,563 | 10-Jul-10 | Provisional filed 6/10/10 |
Improve Performance of Display Devices (Hewlett Packard): Includes U.S. Patent No. 6,078,349 “Process and System for Increasing the Display Resolution of a Point-to-Point Video Transmission Relative to the Actual Amount of Video Data Sent”
The patents in this portfolio relate to display/screen and accessory processes, methods, and systems. In particular, they relate to improving the delivery or quality of displayed or projected content. The exemplary patent includes a process for selectively manipulating the display resolution of a sensory image displayed with a sensory image display device having display elements, the process comprising the steps of:
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Selecting, in accordance with a viewer's control, a subset of the display elements of the sensory image
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Transmitting to the sensory image display device a first level of detail for the selected subset of display
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Elements
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Transmitting to the sensory image display device a second level of detail for the remainder of the display elements which were not selected, wherein the previous steps are performed at the same time.
| Patent No. | Title |
| 6,817,722 | Method and System for Reducing Moire in Displays |
| 7,111,941 | Method and Apparatus for Multiple-Resolution Light Valve Projector |
| 7,251,399 | Method of Making Densely Packed Light Guide Ribbon |
| 7,268,942 | Method of Making a Self Aligned Light Guide Screen |
| 7,270,458 | Curved Light Guide Screen |
Display Technology (Hewlett Packard): U.S. Patent Nos. 6,072,274, 7,251,783, 7,133,201, 7,167,314, 7,143,478, 7,281,804, 7,458,688, 7,295,293, 7,324,278 and 7,307,376
The patents in this lot generally relate to projectors and computer display devices. In particular, they relate to technologies related to light separation, screen displays and reflectors.
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A projector comprising at least first and second micro-displays
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First and second cross total internal reflection (TIR) prisms respectively optically coupled to the at least first and second micro-displays
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Each of the at least first and second cross total internal reflection prisms have first and second total internal reflection interfaces
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A combiner optically coupled to the at least first and second cross total internal reflection prisms
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Each of the first and second cross TIR prisms are respectively configured for receiving light at
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a first direction and configured to reflect the received light from the respective first TIR interface to the respective first and second micro-displays
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Each of the first and second micro-displays and first and second cross TIR prisms are configured to direct ON light through the respective first and second TIR interfaces to the combiner, and to direct OFF light from the respective second TIR interfaces at a second direction substantially the same as the first direction to a beam dump
Projector Systems (Hewlett Packard) 12-Patent Portfolio: U.S. Patent Nos. 7,312,928, 7,310,186, 7,486,425, 7,431,488, 7,349,155, 7,322,707, 7,081,928, 6,362,922, 7,300,156, 7,283,289, 7,256,951 and 7,189,584
This portfolio includes patents related to:
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Projection system field lens
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Uniform multiple light source etendue
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Mirror device for projection system having plurality of tiltable mirrors tilted
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Light guide display with antireflection film
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Screen having a layer of reflectors
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Device stabilizer
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Optical system for full color, video projector using single light valve with plural sub-pixel reflectors
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Projection lens and system
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Prism assembly for separating light
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Projection system modulator reducing distortion and field curvature effects of projection system lens
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Light guide display with protective layer
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Fabrication alignment technique for light guide screen
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Illumination subsystem comprising a light source
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Lightguide adapted to direct illumination light from the light source
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Projection lens adapted to receive the illumination light from the lightguide and to direct image light derived from the illumination light
Projector and Image Control Methods (Hewlett-Packard): U.S. Patent Nos. 6,992,811, 7,036,939, 7,048,382, 7,102,833, 7,137,708, 7,167,216, 7,423,693, 7,465,054, 7,578,594 and 7,768,538
This 10-patent portfolio relates to projectors and display devices, specifically image focusing and mapping, beam filtering, and power control.
The key patent is 7,036,939 “Digital projector control and method apparatus.” This patent relates to a method to control a digital projector based on the light source temperature. A sensor-based feedback system in the projector provides the necessary information to control the light source and a cooling device.
Sample Claim from This Patent: A method of controlling a digital projector, comprising:
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Receiving a request to turn on the digital projector
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Receiving temperature data associated with a light source from a temperature sensor
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Comparing the temperature data to a predetermined threshold
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Turning on a cooling device and keeping the light source off if the temperature data is above the predetermined threshold and if a turn-on request has been received
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Turning on the light source if the temperature data is at or below the predetermined threshold and if a turn-on request has been received
Issued U.S. Patents |
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| Patent No. | Title | App. Date | Grant Date |
| 6,992,811 | Display device | 03-Feb-04 | 31-Jan-06 |
| 7,036,939 | Digital projector control method and apparatus | 28-Jul-03 | 02-May-06 |
| 7,048,382 | Recording length(s) of time high-temperature component operates in accordance with high-temperature policy | 26-Oct-02 | 23-May-06 |
| 7,102,833 | Method and apparatus for mapping image shapes for a display device | 12-Dec-03 | 05-Sep-06 |
| 7,137,708 | Infra-red and ultraviolet filtration in projection systems | 23-Jun-04 | 21-Nov-06 |
| 7,167,216 | Projection system with adjustable aspect ratio optics | 14-Nov-03 | 23-Jan-07 |
| 7,423,693 | Video delay stabilization system and method | 28-Jul-05 | 09-Sep-08 |
| 7,465,054 | Focusing arrangement | 29-Oct-04 | 16-Dec-08 |
| 7,578,594 | Illumination source activation based on temperature sensing | 26-Jul-05 | 25-Aug-09 |
| 7,768,538 | Hybrid data planes | 09-May-05 | 03-Aug-10 |
Projector - Image Enhancement Methods (Hewlett-Packard): U.S. Patent Nos. 6,874,892, 6,927,890, 6,956,702, 6,964,484, 7,018,044, 7,023,619, 7,050,120, 7,188,957, 7,273,282, 7,283,181, 7,306,343, 7,391,475, 7,453,454, 7,460,179, 7,497,579, 7,527,381 and 7,605,828
This 17-patent portfolio relates to projectors and display of images, specifically inventions in areas of image generation, digital projection systems, and optical spectral filters.
An exemplary patent is No. 7,391,475 “Display image generation with differential illumination” that relates to a method of producing a display image from received information representing the image to be displayed. The final image is formed from a plurality of images of different colors and is projected along an optical path.
Exemplary Claim from This Patent: A display system comprising:
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Image source having a light source
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Image source being configured to produce, in response to received image information, a composite image formed of a plurality of component images
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Each component image being of a different color and having a color intensity that corresponds to energy applied to the light source
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The energy applied during production of a component image of one color being greater than the energy applied during production of a component image of another color
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Display device configured to display the plurality of images produced by the image source
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Image source is further configured to apply different levels of energy during production of the component image of the one color
Issued U.S. Patents |
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| Patent No. | Title | App. Date | Grant Date |
| 6,874,892 | Color setting monitoring system for a digital projector | 13-Nov-03 | 05-Apr-05 |
| 6,927,890 | Image display system and method | 30-Oct-03 | 09-Aug-05 |
| 6,956,702 | Projector with spectral filter | 23-Apr-03 | 18-Oct-05 |
| 6,964,484 | Overfill reduction for an optical modulator | 02-Feb-04 | 15-Nov-05 |
| 7,018,044 | Display system incorporating spectral separation and homogenization | 26-Jun-03 | 28-Mar-06 |
| 7,023,619 | Digital projection system optical reflector having facets | 17-Jun-04 | 04-Apr-06 |
| 7,050,120 | Display device with cooperative color filters | 31-Jan-02 | 23-May-06 |
| 7,188,957 | Projection systems and methods for both color and monochromatic displays | 20-Oct-04 | 13-Mar-07 |
| 7,273,282 | Projection system with optical filter | 23-Oct-04 | 25-Sep-07 |
| 7,283,181 | Selectable color adjustment for image display | 14-Mar-03 | 24-Jun-08 |
| 7,306,343 | Image rotator | 22-Apr-05 | 11-Dec-07 |
| 7,391,475 | Display image generation with differential illumination | 14-Mar-03 | 24-Jun-08 |
| 7,453,454 | Image display system and method | 26-Oct-05 | 18-Nov-08 |
| 7,460,179 | Adaptive image display | 14-Mar-03 | 02-Dec-08 |
| 7,497,579 | Active color wheel | 02-Sep-05 | 03-Mar-09 |
| 7,527,381 | Optical system architecture | 29-Jul-05 | 05-May-09 |
| 7,605,828 | Method and system for reducing gray scale discontinuities in contrast enhancing screens affected by ambient light | 18-Feb-04 | 20-Oct-09 |
Microprocessors and Graphics Processing (Hewlett Packard): U.S. Patent Nos. 5,943,492, 5,949,440, 5,956,042, 5,958,040, 5,995,121 and 6,573,893
This six-patent portfolio relates to methods to provide adaptive stream buffers using instruction-specific pre-fetching avoidance (ISPA).
The exemplary patent in this portfolio is U.S. Patent No. 5,958,040, “Adaptive stream buffers.” Each time the CPU executes an instruction that results in pre-fetched cache lines not being used, the instruction address is stored in a table. Subsequent instruction addresses are compared to the instruction addresses in the table. A stream buffer is not allocated when the subsequent instruction address is found within the table.
Exemplary Claim from This Patent:
A method for pre-fetching data to a computer readable memory for possible use by a processor, the method comprising the steps of providing a table for storing unproductive pre-fetch instruction addresses for each memory reference instruction issuing from the processor that encounters a cache miss:
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Determining whether an instruction address of the issued instruction matches any of the unproductive pre-fetch instruction addresses stored in the table;
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Selectively allocating the computer readable memory to pre-fetch data only when the instruction address of the issued instruction does not match any of the unproductive pre-fetch instruction addresses stored in the table
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Determining whether data pre-fetched for the issued instruction is productive
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Selectively storing the instruction address of the issued instruction in the table as an unproductive pre-fetch instruction address only when data pre-fetched for the issued instruction is not productive
Issued U.S. Patents |
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| Patent No. | Title | App. Date | Grant Date |
| 5,943,492 | Apparatus and method for generating external interface signals in a microprocessor | 05-Dec-97 | 24-Aug-99 |
| 5,949,440 | Method and apparatus for processing graphics primitives in multiple modes using reconfigurable hardware | 25-Nov-97 | 07-Sep-99 |
| 5,956,042 | Graphics accelerator with improved lighting processor | 30-Apr-97 | 21-Sep-99 |
| 5,958,040 | Adaptive stream buffers | 28-May-97 | 28-Sep-99 |
| 5,995,121 | Multiple graphics pipeline integration with a windowing system through the use of a high speed interconnect to the frame buffer | 16-Oct-97 | 30-Nov-99 |
| 6,573,893 | Voxel transfer circuit for accelerated volume rendering of graphics Image | 01-Nov-00 | 03-Jun-03 |
Optical Disks and Systems (Hewlett Packard): U.S. Patent Nos. 5,801,895, 5,847,902, 5,901,157, 6,084,824, 6,188,335, 6,947,364 and 7,002,895
This seven-patent portfolio relates to areas of optical head assembly and servo motor system, and also includes applications related to card readers and storage systems.
The exemplary patent in this portfolio is U.S. Patent No. 5,901,157, “Method and apparatus for reducing the access time for storage systems.” This is achieved through identifying the portion of the data within an error correction data block that is required to be changed or overwritten. Improved access time is achieved through accessing only the portion of the data block that is modified.
Exemplary Claim from This Patent:
An error correction method, comprising the steps of:
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Scanning old data to be changed
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Calculating contribution to a correction code from the old data to be changed
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Calculating contribution to the correction code from new data to replace the old data to be changed
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Adjusting the correction code based upon a change in the correction code contribution
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Writing the new data and the adjusted correction code, wherein the contribution to the correction code from the old data to be changed is calculated using a matrix multiplication
Issued U.S. Patents |
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| Patent No. | Title | App. Date | Grant Date |
| 5,801,895 | Disk drive servo demodulation system which suppresses noise on the position error signal | 28-May-96 | 01-Sep-98 |
| 5,847,902 | Head suspension assembly having parallel-coupled load/gimbal springs | 08-Aug-97 | 08-Dec-98 |
| 5,901,157 | Method and apparatus for reducing the access time for storage systems | 29-Oct-96 | 04-May-99 |
| 6,084,824 | Optical card reader including mechanical scanning assembly | 20-Oct-98 | 04-Jul-00 |
| 6,188,335 | Method and apparatus having cascaded decoding for multiple run-length-limited channel codes | 19-Aug-98 | 13-Feb-01 |
| 6,947,364 | Detecting track jumps during reading or writing of data on an optical disk | 15-May-00 | 20-Sep-05 |
| 7,002,895 | Optical disk having zone constant angular velocity wobble | 18-Nov-00 | 21-Feb-06 |
Projection Systems and Optics (Hewlett Packard): 34-Patent Portfolio Related to Projection Assemblies and Their Operations, Light Modulators, Lamp Assemblies and Light Guides
The exemplary patent for this portfolio, U.S. Patent No. 6,733,139 “Projector with narrow-spectrum light source to complement broad-spectrum light source,” relates to a projection system comprised of a reflector and primary and secondary light sources. The primary light source is positioned within the reflector and has a broad spectrum. The secondary light source complements the primary and is positioned adjacent to the primary light source within the reflector and has a narrow spectrum.
The exemplary claim from this patent covers a projections system comprised of:
- A reflector
- A primary light source positioned within the reflector and having a broad spectrum
A secondary light source positioned adjacent to the primary light source within the reflector and having a narrow spectrum.
Issued U.S. Patents |
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| Patent No. | Title | App. Date | Grant Date |
| 6,262,851 | Double-pass projection displays with separate polarizers and analyzers | 18-Jan-00 | 17-Jul-01 |
| 6,733,139 | Projector with narrow-spectrum light source to complement broad-spectrum light source | 03-May-02 | 11-May-04 |
| 6,905,212 | Varying light beam for a display system | 02-Jul-03 | 14-Jun-05 |
| 6,905,217 | Projector with narrow-spectrum light source to complement broad-spectrum light source | 21-Feb-04 | 14-Jun-05 |
| 6,986,591 | Non-imaging photon concentrator | 20-Dec-02 | 17-Jan-06 |
| 7,011,434 | Non-imaging photon concentrator | 01-Aug-05 | 14-Mar-06 |
| 7,055,969 | Reflective optical assembly | 29-Apr-04 | 06-Jun-06 |
| 7,083,287 | Tilt detection in illumination source | 13-May-03 | 01-Aug-06 |
| 7,108,382 | Digital projector access panel | 08-Jul-03 | 19-Sep-06 |
| 7,136,209 | Light modulators | 20-Oct-04 | 14-Nov-06 |
| 7,175,289 | Optical relay | 15-Sep-04 | 13-Feb-07 |
| 7,188,962 | Light modulator device | 08-Apr-05 | 13-Mar-07 |
| 7,204,599 | Offset projection system | 16-Dec-04 | 17-Apr-07 |
| 7,244,031 | Light source arrangement | 08-Jul-04 | 17-Jul-07 |
| 7,256,549 | Three electrode arc-discharge lamp | 09-Mar-06 | 14-Aug-07 |
| 7,276,852 | Lamp header with start-up conductor for an ultra high pressure bulb | 9-Aug-04 | 02-Oct-07 |
| 7,293,882 | Optical relay | 05-Jan-07 | 13-Nov-07 |
| 7,300,164 | Morphing light guide | 26-Aug-04 | 27-Nov-07 |
| 7,318,645 | Beam splitter | 09-Jun-05 | 15-Jan-08 |
| 7,380,949 | Light modulator device | 09-Jan-07 | 03-Jun-08 |
| 7,422,346 | Method of forming a lamp assembly | 29-Jul-05 | 09-Sep-08 |
| 7,434,942 | Projection system | 29-Apr-04 | 14-Oct-08 |
| 7,441,909 | Optical assembly for a projection system | 20-Jan-05 | 28-Oct-08 |
| 7,445,343 | Modular display system | 25-Oct-05 | 04-Nov-08 |
| 7,460,293 | Display system | 30-Sep-05 | 02-Dec-08 |
| 7,462,087 | Display device | 31-Oct-05 | 09-Dec-08 |
| 7,497,577 | Light modulator assembly | 09-Jun-05 | 03-Mar-09 |
| 7,506,985 | Projection light source having multiple light emitting diodes | 26-Oct-05 | 24-Mar-09 |
| 7,529,026 | Optical system with nanoscale projection antireflection layer/embossing |
28-Apr-05 | 05-May-09 |
| 7,530,696 | Projectors and operation thereof | 13-Feb-06 | 12-May-09 |
| 7,546,025 | Media projector system | 06-Jul-04 | 06-Jun-09 |
| 7,546,031 | Lamp bracket to illumination optics assembly interface | 09-Sep-04 | 09-Jun-09 |
| 7,554,730 | Woven projection screen | 30-Apr-07 | 30-Jun-09 |
| 7,695,146 | Projection assembly | 24-Oct-05 | 13-Apr-10 |
Photo Diodes (QinetiQ) - Portfolio of Five Patent Families - 19 Granted Patents and Applications: U.S. Patent Nos. 6,774,460, 6,683,294, 6,978,067, 7,271,376, 6,858,912
Avalanche photodiodes are particularly useful in optical communications, range finding, imaging, laser scanners and specialist applications such as photon counting.
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The total market size for this technology includes $300 Million for low level light detection and $1.5 billion for
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IP focussed on the design and structure of the diode component to ensure more efficient operation than pre-existing designs
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