Method and apparatus for misalignment compensation in optical joysticks

摘要

An apparatus for misalignment compensation in optical joysticks is described. The optical joystick includes a light source, a plurality of photodetectors, and circuitry for controlling operation of the optical joystick. In some embodiments, each of the photodetectors may partitioned into a plurality of photodetector elements and select photodetector elements are configured to be individually activated in order to cause an electrical shifting of the selected photodetector elements to achieve a different operational alignment position of optical components of the optical joystick. In some embodiments, the light source may be similarly be calibrated by individually activating portions of a light-source array to cause an electrical shift. Various other embodiments and methods of operation are also described.

主权项

1. An optical joystick, comprising:
circuitry for controlling operation of the optical joystick; a light source; and a plurality of photodetectors partitioned into a plurality of photodetector elements, wherein select photodetector elements are configured to be individually activated in order to cause an electrical shifting of the selected photodetector elements to achieve a different alignment position of optical components of the optical joystick, and further wherein at least one of the photodetector elements of each of the photodetectors is activated.