| 摘要 |
PURPOSE:To unconsciously and excellently detect the line of sight without forcing a user to execute troublesome operation. CONSTITUTION:Update means 100 and 101 updating a parameter in a storage means 100a based on line-of-sight information obtained in the midst of the action of an equipment are provided so as to update the parameter used for calculating the actually adopted line-of-sight information based on the line-of- sight information obtained in the midst of the action (main action, for example) of the equipment. |
