US 7,404,645 B2 · Image and light source modulation for a digital display system

Abstract

Image processing enhances display quality by controlling both the image modulator and the light sources. The image processing system utilizes a combination of user inputs, system configuration, design information, sensor feedback, pixel modulation information, and lighting control information to characterize the display environment on a per pixel basis. This per pixel characterization information is combined with one or more frames of the incoming real time display data. The image processing system processes each incoming pixel and produces a modified corresponding output pixel. Each pixel of each frame is processed accordingly. The image processing system also produces control information for the light sources. The light source control information can control individual lamps, tubes or LEDs, or can control a block or subset of the light sources. The resulting display has improved image consistency, enhanced color gamut, higher dynamic range and is better able to portray high motion content.

Claims15

Dependent claims

A display comprising:

one or more light source modulators including a plurality of light source controls to dynamically vary the brightness of LED light sources at multiple locations of said display;
a display modulator including an array of individually controllable pixels;
one or more light sensors that, when necessary, feed back real time readings measuring the brightness from said light source modulators and store said measurements;
and
a controller, connected both to said plurality of light source controls and to said display modulator, that receives an incoming data stream and, based both on values of the incoming data stream and on the stored measurements from said sensors, dynamically determines and controls at different ones of said locations the values for said light source brightness and the values for said display modulator array of pixels.

2 more elements

Dependencies are inferred from the claim text.

Image and light source modulation for a digital display system

Life of this patent

Image and light source modulation for a digital display system

Life of this patent

Abstract

Claims15