Patent ID: 9400554
Filing Date: 2016-07-26
CPC Classification: G02B,G06F

Claim Text:
1. An information display system comprising: a transmission type head-mounted display including a display and projection section configured to display an object on a virtual screen with superimposing the object on a background, and an imaging section configured to take an image of both eyes of a user; a control section for controlling the transmission type head-mounted display, the control section including a gaze point detecting section configured to detect a point of gaze of the user by using image data of the both eyes of the user taken by the imaging section, a first judgment section configured to, by using the point of gaze, judge whether the user gazes at a certain area on the virtual screen or the user gazes on a background beyond the virtual screen, a second judgment section configured to judge whether a sight-line region overlaps with a display position of the object on the virtual screen or not, the sight-line region being a region around an intersection of the virtual screen and a line connecting a midpoint of the both eyes and the point of gaze, and a display control section configured to, in response to a movement of the point of gaze, make a change of the object in at least one of a display position and a display mode on a basis of judgment results of the first judgment section and the second judgment section; and a storage section storing an object property table in which each object displayed on the virtual screen and a property of the each object are associated with each other, wherein the display control section is configured to make the change of the object on the first judgment section judging that the user gazes on the background beyond the virtual screen and the second judgment section judging that the sight-line region overlaps with the display position of the object, wherein the control section further includes a third judgment section configured to, by using the object property table, judge whether the object overlapping with the sight-line region has a first property indicating that the object is to be displayed in consideration of the background or has a second property indicating that the object is to be displayed regardless of the background, and the display control section is configured to make the change of the object in the at least one of the display position and the display mode further on the third judgment section judging that the object has the second property.