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Browse Prior Art Database

Mouse

IP.com Disclosure Number: IPCOM000044176D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Nomura, H: AUTHOR [+2]

Abstract

This article describes a mouse, i.e., a position indicator, which is manually moved on a supporting surface. In addition to a rotatable ball associated with X and Y rollers for indicating the X and Y movement of the mouse, another ball and an associated roller are provided in the mouse to enable the detection of a rotational angle of the mouse around the Z axis. The detected angle is utilized to correct coordinate values for the mouse obtained based on the rotational amounts of the X and Y rollers. As roughly shown in the figure, a mouse 1 comprises two identical balls 2 and 3 in a housing. These balls contact a supporting surface and rotate as the mouse 1 is moved by an operator.

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Mouse

This article describes a mouse, i.e., a position indicator, which is manually moved on a supporting surface. In addition to a rotatable ball associated with X and Y rollers for indicating the X and Y movement of the mouse, another ball and an associated roller are provided in the mouse to enable the detection of a rotational angle of the mouse around the Z axis. The detected angle is utilized to correct coordinate values for the mouse obtained based on the rotational amounts of the X and Y rollers. As roughly shown in the figure, a mouse 1 comprises two identical balls 2 and 3 in a housing. These balls contact a supporting surface and rotate as the mouse 1 is moved by an operator. The Y axis is defined by a first line passing both centers of the balls 2 and 3, while the X axis is defined by a second line passing the center of the ball 2 perpendicular to the first line. Associated with the ball 2 are X and Y rollers 4 and 5 rotational axes of which are disposed along Y and X axes, respectively. The ball 3 is accompanied by a roller 6 which aligns with the roller 4. The mouse 1 includes appropriate means for generating three signals corresponding to the rotation of the rollers 4, 5 and 6. These signals are transferred to a display controller (not shown) as usual. The controller converts these signals to digital values by appropriate means, such as counters. The digital values based on the signals corresponding to the rotation of the rollers 4 and 5 nominally...