Patent ID: 9286819
Filing Date: 2016-03-15
CPC Classification: G02B,G09G,H04N

Claim Text:
1. A display device comprising: a light source which emits light; a position detection unit configured to detect an eye position of a person; a light deflection unit configured to deflect the light; an identification unit configured to identify the person; a control unit configured to control a deflecting direction in which the light deflection unit deflects the light; a display unit configured to receive the light from the light deflection unit and display an image formed by the light, the image including a region set to be a security region; and a display information management unit configured to hold access right information indicating whether or not the person has a right to access an information item displayed in the security region, wherein the control unit is configured to (i) control the deflecting direction in which the light deflection unit deflects the light, according to whether or not the access right information indicates that the person has a right to access the information item and (ii) when the access right information indicates that the person does not have the right to access the information item, cause the light deflection unit to deflect light in the security region away from the eye position of the person and light in a region other than the security region toward the eye position of the person, the position detection unit is configured to recognize an eye position of each of a plurality of persons, the control unit is configured to cause the light deflection unit to deflect the light toward the plurality of persons in sequence in a time-division manner to allow the plurality of persons to view the image, the display information management unit holds access right information for each of the plurality of persons, the control unit is configured to cause the light deflection unit to deflect light in an entire region of the image toward the eye position of a first person among the plurality of persons, the first person being indicated by the access right information as a person having the right, and the control unit is configured to cause the light deflection unit to deflect light in the security region away from the eye position of a second person among the plurality of persons, the second person being indicated by the access right information as a person not having the right.