Patent ID: 8907866

Claim:
A head mount display reproducing both a first content data including an image and a second content data not including the image, the head mount display comprising: a reproducing unit reproducing the first content data and the second content data; a timer unit measuring a time that the reproducing unit reproduces the first content data; a displaying unit displaying the image; a recognizing unit recognizing a use history for multiple times of use of the displaying unit or a time required for adjusting the displaying unit before use; a decision unit deciding a permissible viewing time of the image for a user based on the use history for multiple times of use or the time required for adjusting; and a controlling unit stopping the display of the image by the displaying unit according to the time measured by the timer unit and the permissible viewing time, wherein the controlling unit determines whether reproduction of the first content data or reproduction of the second content data is instructed, and only when the reproduction of the first content data is instructed, the controlling unit corrects a stopping time decided (1) according to the permissible viewing time when stopping the display of the image by the displaying unit, (2) based on information of content data of the image which is an object to be displayed by the displaying unit, and (3) based on chapter information, which is different from the image information of the content data and is control information of the content data appended to the content data; the recognizing unit recognizes a degree to which the user is accustomed to using the displaying unit based on one of a number of times of use of the displaying unit, operating hours per use, accumulated operating hours, and a time required for adjusting the displaying unit before use; and the decision unit decides a permissible viewing time of the image for the user based on the degree to which the user is accustomed to using the displaying unit.