Barco has patented a new projector design that uses a combination of spatial light modulators to efficiently generate high dynamic range (HDR) images. By separately controlling the phase and amplitude of light, the projector can produce significantly elevated highlights and darker black levels while reducing overall power requirements. GlobalData’s report on Barco gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Barco, Under-screen fingerprint recognition was a key innovation area identified from patents. Barco's grant share as of January 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
High dynamic range projector using phase and amplitude modulation
A recently granted patent (Publication Number: US11877102B2) discloses a method and apparatus for displaying video data in high dynamic range (HDR) using a two-dimensional spatial phase modulator. The method involves processing video data in real-time to generate phase-modulator control signals, which are then applied to the phase modulator to redistribute light from certain regions of the video frames to other regions, resulting in enhanced brightness contrast. The phase-modulated light is then directed to a viewing area, providing viewers with an improved visual experience.
The patent details a sophisticated process that includes establishing a mapping between target light patterns and the phase modulator, deriving a phase function, and optimizing it based on intensity comparisons. Additionally, the method involves amplitude-modulating the phase-modulated light and controlling a spatial light modulator to reduce blur. The apparatus consists of a light source, a two-dimensional spatial phase modulator, and a data processor that handles real-time processing of video data and control signals for the phase modulator. The data processor is also responsible for optimizing the phase function and controlling the spatial light modulator for amplitude modulation and blur reduction, ultimately enhancing the display of video data in HDR.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
