Color-Specific Sequence Scaling for Sequential Color Displays

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Solution Overview

Problem

Existing DMD-based display systems using rapidly switching light sources face significant memory storage requirements due to the need to store numerous color sequences, and the light output of solid-state light sources can change over time, necessitating additional sequences for compensation.

Innovation Solution

A method and system for adjusting color segment durations in color sequences by computing scaling factors based on a reference color sequence, allowing for the generation of desired color sequences with reduced storage needs and precise control of color cycle times, using a controller to manage light modulators and light sources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If numerous color sequences are stored to compensate for light source output changes, then chromatic accuracy is maintained, but memory storage requirements increase significantly

Engineering Contradiction:
Improvechromatic accuracyVSAvoidmemory storage requirements
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent changes the parameter of color sequence duration by introducing scaling factors that adjust the time each color is displayed. Instead of storing multiple complete color sequences for compensation, the system stores a single reference sequence and dynamically modifies its duration parameters through scaling factors, thereby maintaining chromatic accuracy while significantly reducing memory storage requirements

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces dynamic adjustment capability to the color sequence display system. The controller dynamically calculates and applies scaling factors to the reference color sequence based on current light source output characteristics, allowing the system to adapt to light source degradation over time without requiring pre-stored compensation sequences

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If color sequence durations are adjusted for precise chromatic control, then image quality improves, but system complexity increases

Engineering Contradiction:
Improvechromatic control precisionVSAvoidsystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments the color sequence into individual color segments with adjustable durations. By dividing the sequence into discrete segments (red, green, blue colors) with independent duration control through scaling factors, the system achieves precise chromatic control while maintaining relatively simple implementation through straightforward temporal adjustment rather than complex modulation

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8493288B2System and method for color-specific sequence scaling for sequential color systems
Publication Date: 2013.07.23 TEXAS INSTRUMENTS INC
  • US8493288B2 patent drawing
  • US8493288B2 patent drawing
  • US8493288B2 patent drawing

AI summary

System and method for adjusting the color segment durations for colors in a color sequence in sequential color display systems. A preferred embodiment comprises receiving a desired color sequence to display, computing a scaling factor for each color in the desired color sequence based on a reference color sequence, and sequentially displaying the colors in the desired color sequence. The reference color sequence used in computing the scaling factors specifies a duration for each color in the reference color sequence, while the desired color sequence specifies a desired duration for each color in the desired color sequence. The use of a single reference color sequence to create a large number of color sequences can save a significant amount of storage space and can allow for the storage of reference color sequences to meet varying chromatic properties due to changes in the display system, user settings, and operating environment.