Display device, display method, integrated circuit, and program

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 identification unit is configured to identify a person among a plurality of persons as a user and determined whether or not eyes of each person other than the user among the plurality of persons are positioned along a line parallel to a direction from one eye to the other eye of the user, and
• the control unit is configured to cause the light deflection unit to deflect the light toward the eye position of a person other than the user when the eyes of the person other than the user are determined to be positioned along a line parallel to the direction from one eye to the other eye of the user, and cause the light deflection unit to deflect the light away from the eye position of the person other than the user when the eyes of the person other than the user are determined to be not positioned along a line parallel to the direction from one eye to the other eye of the user.

A display method comprising:

• causing a light source to emit light;
• detecting an eye position of a person;
• causing a light deflection unit to deflect the light;
• identifying the person;
• receiving the light deflected by the light deflecting unit and displaying an image including a region set to be a security region, the receiving and the displaying being performed by a display device;
• and
• (i) controlling, using a control unit, a deflecting direction in which the light deflection unit deflects the light, according to whether or not access right information held by a display information management unit, which indicates whether or not the person has a right to access an information item displayed in the security region, indicates that the person has a right to access the information item and (ii) causing, using the control unit, the light deflection unit to deflect light in the security region away from the eye position of the person and the light outside the security region toward the eye position of the person, when the access right information indicates that the person does not have the right to access the information item,
• wherein the detecting includes recognizing an eye position of each of a plurality of persons,
• the controlling and causing includes causing, using the control unit, 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 controlling and causing includes causing, using the control unit, 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 controlling and causing includes causing, using the control unit, 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.

An integrated circuit which is included in a display device including:

• a light source which emits light;
• a light deflection unit configured to deflect 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, the integrated circuit comprising:
• a position detection unit configured to detect an eye position of a person;
• an identification unit configured to identify the person;
• and
• a control unit configured to (i) control a deflecting direction in which the light deflection unit deflects the light, according to whether or not access right information, which indicates whether or not the person has a right to access an information item displayed in the security region, 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,
• wherein 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.

A non-transitory computer-readable recording medium for use in a computer, the recording medium having a program recorded thereon for causing a computer which is a display device including:

• a light source which emits light;
• a light deflection unit configured to deflect the light;
• and
• 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, to execute:
• detecting an eye position of a person;
• identifying the person;
• and
• (i) controlling, using a control unit, a deflecting direction in which the light deflection unit deflects the light, according to whether or not access right information, which indicates whether or not the person has a right to access an information item displayed in the security region, indicates that the person has a right to access the information item and (ii) causing, using the control unit, 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, when the access right information indicates that the person does not have the right to access the information item,
• wherein the detecting includes recognizing an eye position of each of a plurality of persons,
• the controlling and causing includes causing, using the control unit, 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 controlling and causing includes causing, using the control unit, 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 controlling and causing includes causing, using the control unit, 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.