Patent ID: 11860356
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A system for displaying an image in a display region comprising:
a slow-scan mirror that is responsive to a slow-scan drive signal to direct a laser beam onto the display region and generate the image, wherein the slow-scan mirror generates a slow-scan feedback signal;
a slow-scan driver configured to generate the slow-scan drive signal; and
a slow-scan controller configured to adjust the slow-scan drive signal for the slow-scan mirror with the slow-scan driver, wherein the slow-scan controller includes:
an outer control loop with an open angle control for the slow-scan mirror; and
an inner control loop with a dynamic gain control for the slow-scan mirror, wherein the outer control loop and the inner control loop are responsive to the slow-scan feedback signal, and wherein the inner control loop is also responsive to the slow-scan drive signal and adapted to dynamically adjust a gain of the inner control loop to achieve a target gain such that overall gain variations from at least the slow-scan mirror are compensated and stabilized, wherein the dynamic gain control is configured to maintain the gain of the inner control loop in a range between a maximum value and a minimum value.