Head-mounted information processing apparatus and its controlling method

A head-mounted information processing apparatus having a main body device that is used in a state of being worn on a user's head, and a controller that controls the main body device, the apparatus comprising:

• the controller including:
• a proximity communication interface that communicates with the main body device;
• and
• a position/attitude sensor that detects a position/attitude of the controller;
• the main body device including:
• a proximity communication interface that communicates with the controller;
• and
• a display that displays a predetermined image;
• and
• the controller or the main body device including:
• a directional detector that detects a direction of the controller by calculation based on a detected result of the position/attitude sensor;
• a rotational detector that detects rotation of the controller by calculation based on the detected result of the position/attitude sensor, the direction of the controller being used as a rotational axis regarding the rotation of the controller;
• and
• an operation instruction converter that converts a detected result of the directional detector and a detected result of the rotational detector into instructions for the main body device,
• wherein the main body device has a display controller that displays a pointing point of a pointing beam or a cursor on the display, controls the pointing position in response to a movement instruction, and controls an object pointed to by the pointing position according to a trigger instruction,
• wherein the operation instruction converter issues the movement instruction based on the direction of the controller that is detected by the directional detector,
• wherein the operation instruction converter issues the trigger instruction in a case where a rotational amount of the rotation of the controller detected by the rotational detector exceeds a first rotational threshold value,
• wherein the operation instruction converter issues a rotation starting notification in a case where the rotational amount exceeds a second rotational threshold value that is a value smaller than the first rotational threshold value, and
• wherein the display controller changes the object, pointed to by the pointing position, into a provisionally selected state, in a case of receiving the rotation starting notification, and in a case of receiving the trigger instruction, changes the object from the provisionally selected state to a selected state regardless of whether the pointing position at a time of receiving the trigger instruction points to the object in the provisionally selected state.