Tensor displays
US8848006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2013 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In exemplary implementations of this invention, an automultiscopic display device includes (1) one or more spatially addressable, light attenuating layers, and (2) a controller which is configured to perform calculations to control the device. In these calculations, tensors provide sparse, memory-efficient representations of a light field. The calculations include using weighted nonnegative tensor factorization (NTF) to solve an optimization problem. The NTF calculations can be sufficiently efficient to achieve interactive refresh rates. Either a directional backlight or a uniform backlight may be used. For example, the device may have (1) a high resolution LCD in front, and (2) a low resolution directional backlight. Or, for example, the device may have a uniform backlight and three or more LCD panels. In these examples, all of the LCDs and the directional backlight (if applicable) may be time-multiplexed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.