Abstract: To switch a coordinate mode by automatically recognizing a coordinate mode more usable for a user performing a natural operation, a coordinate determination apparatus (200) according to the present invention includes: an obtain and store unit (204) which obtains coordinate information from a coordinate input device (201) and stores the coordinate information onto a recording medium; a time correlation specifying unit (320) which specifies a correlation between times of input indicated by first and second coordinate information; a coordinate correlation specifying unit (324) which specifies input coordinates indicated by the second and third coordinate information; a coordinate mode selection unit (326) which selects the coordinate mode based on a coordinate correlation value and a time correlation value; and a coordinate transform unit (328) which transforms the input coordinates indicated by the second coordinate information into coordinates selected according to the coordinate mode.

Abstract: An operating apparatus (200) which includes: an operation information obtaining unit (204) which obtains, from an input apparatus (203), operation information indicating operations inputted by a user to first and second input units (201 and 202); an operation amount calculation unit (205) which calculates amounts of the operations by the user to the first and second input units (201 and 202), using the operation information obtained by the operation information obtaining unit (204); and an operation region change unit (215) which changes sizes of first and second operation regions (301 and 302) so that areas of the first and second operation regions (301 and 302) corresponding to the first and second input units (201 and 202) increase as the amounts of the operations to the first and second input units (201 and 202) calculated by the operation amount calculation unit are greater.

Abstract: A user interface device (1) includes: a detection unit (3) which detects a position of a user; a display unit (2) which displays a work space; and a control unit (4) which controls display of an independent object which belongs to no user. The control unit (4) moves the independent object in a mode which varies between when the independent object is in a face-to-face space of the display unit (2) which is face to face with the position of the user and when the independent object is outside the face-to-face space. The control unit (4) also stops the moving independent object in a workspace assigned to the user when the user obtains the independent object.