Method and apparatus for increasing a perceived resolution of a display
First Claim
1. A method of increasing a perceived resolution of a display comprising:
- directing light at an optical dithering element; and
repeatedly transitioning the optical dithering element from a first position to a second position and then back to the first position such that the optical dithering element alternately directs light to a first position on the display and then to a second position on the display;
wherein each transition of the optical dithering element comprises controlling any overshoot or ringing in the position of the optical dithering element by providing a predetermined control signal to the optical dithering element;
wherein a resonant response period is defined as a time period between the beginning of a transition from the first position to the second position and the beginning of the next subsequent transition from the second position to the first position; and
wherein the predetermined control signal comprises;
a step pulse having a first magnitude and having a width of approximately twenty percent of the resonant response period; and
a quench pulse immediately following the step pulse, the quench pulse having a magnitude equal to the first magnitude but opposite in direction and having a width of approximately fourteen percent of the resonant response period.
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Abstract
According to one embodiment, a method of increasing a perceived resolution of a display includes directing light at a optical dithering element and repeatedly transitioning the optical dithering element from a first position to a second position and then back to the first position such that the mirror alternately reflects light to a first position on the display and then to a second position on the display. Each transition of the mirror includes controlling any overshoot or ringing in the position of the optical dithering element by providing a predetermined drive signal to the optical dithering element to smoothly accelerate and decelerate the element during the traverse between the first and second positions.
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Citations
13 Claims
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1. A method of increasing a perceived resolution of a display comprising:
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directing light at an optical dithering element; and repeatedly transitioning the optical dithering element from a first position to a second position and then back to the first position such that the optical dithering element alternately directs light to a first position on the display and then to a second position on the display; wherein each transition of the optical dithering element comprises controlling any overshoot or ringing in the position of the optical dithering element by providing a predetermined control signal to the optical dithering element; wherein a resonant response period is defined as a time period between the beginning of a transition from the first position to the second position and the beginning of the next subsequent transition from the second position to the first position; and wherein the predetermined control signal comprises; a step pulse having a first magnitude and having a width of approximately twenty percent of the resonant response period; and a quench pulse immediately following the step pulse, the quench pulse having a magnitude equal to the first magnitude but opposite in direction and having a width of approximately fourteen percent of the resonant response period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification