Picture Reproducers Using Projection Devices TRIZ Cases

A portable touchscreen maps projected-image points to draggable icons, replacing cumbersome remote-key correction with direct coordinate updates.

Obstacle detection separates a projection target into clear and obstructed regions, using different images to show where projection is possible.

Stored test and reference patterns preserve geometric correction data, reducing manual work when a projector is reinstalled.

High-contrast simulator projections reveal paint-related mottling; a camera and spatial filter generate brightness compensation for the screen.

A light combiner and conjugate image position align visible and infrared projection, improving contrast without a long back focal length.

Spatial frequency analysis of captured projector output identifies brightness variation, enabling a compensation filter that improves display image quality.

Curved windshields can distort head-up displays; holograms and optical deflection correct light paths for clearer driver data.

Sensors measure projector brightness across color channels to automate black-level blending and reduce tint differences in overlap regions.

Touch-drag control maps screen icons to projector adjustment points, replacing slow remote-key and cursor operations for faster correction.

Three DMD panels, unpolarized dichroic mirrors, and shared optics target brighter output without a refrigerator-sized projector.

A distance sensor compares averaged readings with a reference value to pause projection playback automatically when an obstacle enters the path.

Reference-image capture and differential analysis help select structured light for the projection surface, reducing manual setup complexity.

Sensor measurements characterize brightness and tint at each projector point, automatically adjusting video levels for uniform black overlap blending.

Group-level authority flags automate access-right invalidation and restoration after contract changes, reducing manual checks and reconfiguration.

A dedicated projection and summation circuit calculates reflection vectors on the fly, synchronizing pixels with mirror motion and compensating for fluctuations.

Bulky tape measures are difficult to position across multiple surfaces; processor-calibrated projection displays a virtual scale for precise, convenient measurement.

Uniform monochromatic illumination obscures characters; selected-region gradation inversion increases contrast for clearer projection.

Projected markers and external-device posture data help correct keystone distortion, improving image alignment while reducing calculation complexity.

The camera maps projected pixels and optical states to estimate projector position and attitude without extra calibration equipment.

A movable projector housing switches one optical waveguide between AR and VR modes.

A lookup table separates forward and backward sweeps from camera-captured display content for continuous, markerless bi-phase calibration.

Captured images, environment data, and user input guide learning-model content generation for better projection alignment.