Abstract: A handheld measurement device of an embodiment of the invention includes a distance measurement engine and an angular position measurement engine. A controller controls the distance measurement engine and associates an elevation, azimuth position, or relative angular position from the angular position measurement engine with distance measurements taken from the elevation engine. In preferred operations, each point measured from a target under the control of a user is automatically associated with an elevation and/or azimuth position obtained from the angular position engine. Preferably, the controller determines a set of relative coordinates in space for a plurality of related target points. The controller may then calculate a variety of useful distances, areas, volumes, etc., regarding the plurality of target points.

Abstract: A computer system includes an input pointer, a tablet having a two-dimensional tablet surface, and a data processor coupled to the tablet and operative to receive coordinate data from the tablet. The coordinate data is preferably in absolute-mode, and the data processor processes the coordinate data such that coordinate data influenced by a first segment of the tablet surface is processed in a relative-mode fashion, and coordinate data influenced by a second segment of the tablet surface is processed in an absolute-mode fashion. In consequence, the tablet is segmented for simultaneous relative-mode and absolute-mode operation. The segments can take on a number of configurations depending upon the configuration of the computer screen, the application program running, and user preferences.

Abstract: A method and an apparatus for contacting a touch-sensitive cursor-controlling input device to generate button values simulating the button state of a mechanical button switch. This method and apparatus enable an operator to utilize the touch-sensitive cursor-controlling input device to change the value of a ButtonState variable (which simulates the ButtonState of a mechanical button switch) by (1) detecting contact intervals when the user contacts the touch-sensitive input device, (2) detecting gap intervals between subsequent contact intervals, and (3) moving the cursor on the display screen and changing the value of the ButtonState variable based on the duration of the contact and gap intervals. In turn, this button generation capability enables an operator to perform with a single touch-sensitive input device numerous control operations, such as cursor manipulation, click, multi-click, drag, click-and-drag, and multi-click-and-drag operations.