Digital backplane
The present invention provides a various methods, systems and devices for controlling light modulating elements and/or spatial light modulators. In some embodiments of the present invention, a recursive feedback method is used to control light modulating elements and/or spatial light modulators.
1. A device comprising:
electrode means comprising at least one electrode for controlling a light modulating element of an array of light modulating elements; and
recursive feedback control means for controlling at least one pulse width using recursive feedback, said pulse width driving said electrode means.
2. The device of claim 1 , wherein said recursive feedback is based on an output bit.
3. The device of claim 2 , wherein said output bit is a drive output bit.
4. The device of claim 2 , wherein said output bit is an intermediate output bit.
5. The device of claim 1 , wherein said device includes a backplane and wherein said backplane includes said recursive feedback control means.
6. The device of claim 1 , wherein said device includes a panel interface controller and wherein said panel interface controller includes said recursive feedback control means.
7. The device of claim 1 , wherein said electrode means comprises at least two electrodes.
8. The device of claim 1 , wherein said array of light modulating elements is part of a visual display apparatus.
9. The device of claim 1 , wherein said array of light modulating elements is on a single silicon backplane.
10. The device of claim 1 , wherein said recursive feedback is explicit.
11. The device of claim 1 , wherein said recursive feedback is implicit.
12. The device of claim 1 , wherein said at least one pulse width comprises at least two pulse widths.
13. The device of claim 1 , wherein said device includes a plurality of pixel value bits for controlling a pixel value of said pulse width and wherein said recursive feedback control means only uses some of said pixel value bits to determine a next state of said pulse width.
14. The device of claim 1 , further comprising a visual display apparatus including said array of light modulating elements.
15. The device of claim 14 , wherein said visual display apparatus is an LCoS device and wherein said visual display apparatus includes pH indicating means indicating when a liquid crystal and/or the environment surrounding said liquid crystal of said visual display apparatus is damaged.
16. The device of claim 1 , wherein said device is a visual display apparatus.