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US 2010/0244705 A1Published application
Detecting Screen Breakage in Display Systems
OwnerRoger A. Hajjar, David L. Kent +1inventors
InventorsRoger A. Hajjar, David L. Kent, Akihiro Machida
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Abstract
Display systems, devices and techniques based on a screen and a mechanism that detects breakage on the screen and interrupts the operation of the screen when a screen breakage is detected.
Claims22
A display device, comprising:
- a display screen assembly that produces images in response to one or more screen control signals, the display screen assembly comprising screen sensors spatially distributed at different locations in the display screen assembly and connected to form one or more continuous conductive paths, each conductive path carrying a sensor signal indicating whether there is a discontinuity of the display screen assembly at or near the respective conductive path;
- and
- a screen control module that receives the sensor signal carried by the one or more screen sensors and affects the one or more screen control signals to the display screen assembly to interfere with producing of the images at a region in a respective conductive path that the sensor signal indicates a discontinuity.
A display device, comprising:
- a light source module that produces one or more scanning optical beams having optical pulses to carry image information;
- a display screen positioned to receive the one or more scanning optical beams from the light source module and comprising different light-emitting regions that absorb the one or more scanning optical beams to emit visible light forming images, the display screen comprising a screen sensor that comprises electrically conductive segments spatially distributed at different locations of the display screen and connected to form a continuous electrically conductive path to carry a sensor signal indicative of a damage in the display screen when the damage in the screen breaks the conductive path of the screen sensor;
- and
- a light shut-off control module that receives the sensor signal from the screen sensor and controls the light source to shut off the one or more scanning optical beams when the sensor signal indicates a damage in the display screen.
1 more element
A method for detecting discontinuities in a display screen assembly, comprising:
- energizing one or more conductive paths in a display screen assembly that are formed by connecting conductive segments spatially distributed at different locations in the display screen assembly to effectuate a screen sensor that carries a sensor signal to indicate one or more discontinuities in the one or more conductive paths;
- and
- controlling the display screen assembly to substantially remove images displayed on the display screen assembly at a location on the screen display assembly in response to the sensor signal when the sensor signal indicates presence of one or more discontinuities in the display screen assembly.
Dependencies are inferred from the claim text.