Display device and control method therefor
AssigneeKabushiki Kaisha Toshiba
InventorsAkihisa Moriya, Hiroaki Nakamura, Takashi Sasaki, Aira Hotta, Haruhiko Okumura
Life of this patent
Estimating the term…
Abstract
One embodiment provides a display device, including: a luminous flux generator which generates luminous flux including image information; a reflector plate which reflects the luminous flux generated by the luminous flux generator toward one eye of a viewer; a head detector which detects a head of the viewer by using at least two pairs of distance sensors; a controller which controls a position of the reflector plate based on an output from the head detector; and a driver which drives the reflector plate based on an output from the controller.
Claims10
A display device, comprising:
- a luminous flux generator which generates luminous flux including image information;
- a reflector plate which reflects the luminous flux generated by the luminous flux generator toward one eye of a viewer;
- a driver which drives the reflector plate to thereby adjust a direction of the luminous flux;
- a head detector which includes:
- a first pair of distance sensors which are disposed at predetermined positions and output first measurement values corresponding to distances therefrom to the head of the viewer;
- and
- a second pair of distance sensors which are disposed at positions different from the predetermined positions, and output second measurement values corresponding to distances therefrom to the head of the viewer;
- and
- a controller which:
- calculates a first calculation value and a second calculation value based on the first measurement values and the second measurement values respectively,
- determines a coefficient based on the first calculation value which is obtained at a time when the second calculation values becomes zero,
- calculates a relative position of the head of the viewer based on the first calculation value and the coefficient, and
- controls the driver to drive the reflector plate based on the calculated relative position.
A method for controlling a display device, comprising:
- generating luminous flux including image information;
- reflecting the generated luminous flux toward one eye of a viewer;
- measuring a first measurement value representative of a first distance from a first pair of distance sensors to a head of a viewer;
- measuring a second measurement value representative of a second distance from a second pair of distance sensors to the head of the viewer, wherein the second pair of distance sensors are at a different location than the first pair of distance sensors;
- calculating a first calculation value and a second calculation value based on the first measurement value and the second measurement value respectively;
- determining a coefficient based on the first calculation value being obtained at a time when the second calculation value becomes zero;
- determining a relative position of the head of the viewer based on the first calculation value and the coefficient;
- and
- driving a reflector plate to adjust a direction of the luminous flux to the determined relative position of the head of the viewer.
Dependencies are inferred from the claim text.