Back to results
US 11,693,231 B2Granted
Disturbance rejection for laser beam scanning display
AssigneeMicrosoft Technology Licensing, LLC
InventorsWenjun Liao, Chuan Pu
Life of this patent
Estimating the term…
Abstract
A laser beam scanning (“LBS”) display device is configured with an optical system that includes a laser beam emitter configured to emit a laser beam. The optical system also includes a driver configured to generate a driving signal for controlling a mirror, such as a microelectromechanical systems (“MEMS”) mirror. The optical system also includes a controller configured to generate a driving signal while rejecting a system disturbance response.
Claims12
A display device, comprising:
- a laser beam emitter configured to emit a laser beam;
- a driver configured to generate a driving signal for controlling a microelectromechanical systems (MEMS) mirror, the MEMS mirror configured to reflect the laser beam onto a display region to generate an image;
- and
- a controller configured to:
- generate a driving signal while rejecting a system disturbance;
- and
- provide the driving signal to the MEMS mirror;
- the controller comprising:
- a pre-filter with a transfer function equivalent to that of the MEMS mirror;
- a feedback loop with a transfer function equivalent to that of the MEMS mirror;
- and
- a parallel feedback loop with a constant gain.
9 more elements
A display device comprising:
- a laser beam emitter configured to emit a laser beam;
- a first microelectromechanical systems (MEMS) mirror;
- a second MEMS mirror;
- a first driver configured to generate a first driving signal for controlling the first MEMS mirror;
- a second driver configured to generate a second driving signal for controlling the second MEMS mirror, wherein the first driver and the second driver are configured to drive the first MEMS mirror and the second MEMS mirror respectively to reflect the laser beam onto a display region to generate an image;
- and
- a controller configured to:
- generate a driving signal while rejecting a system disturbance;
- and
- provide the driving signal to the first MEMS mirror;
- the controller comprising:
- a pre-filter with a transfer function equivalent to that of the first MEMS mirror;
- and
- a feedback loop with a transfer function equivalent to that of the first MEMS mirror.
11 more elements
A display device comprising:
- a laser beam emitter configured to emit a laser beam;
- a slow-scan microelectromechanical systems (MEMS) mirror;
- a slow-scan driver configured to generate a driving signal for controlling the slow-scan MEMS mirror;
- and
- a controller configured to:
- generate a driving signal while rejecting a system disturbance;
- and
- provide the driving signal to the slow-scan MEMS mirror;
- the controller comprising:
- a pre-filter with a transfer function equivalent to that of the slow-scan MEMS mirror;
- a feedback loop with a transfer function equivalent to that of the slow-scan MEMS mirror;
- and
- a parallel feedback loop.
10 more elements
Dependencies are inferred from the claim text.