Intermittent operating type pointing device
AssigneeAlps Electric Co., Ltd.
InventorSadakazu Shiga
Life of this patent
Estimating the term…
Abstract
In detecting units for detecting the rotating operation of a ball, respective photoemitters serving as light sources are intermittently driven to emit light and respective photodetectors receive the light. A control unit recognizes a moving speed in the X-axial direction and that in the Y-axial direction from detection signals obtained by the detecting units. In the control operation of the control unit, when an increase in operating speed is detected, a light emitting period of each of the photoemitters is reduced. When a decrease in operating speed is detected, the light emitting period of each photoemitter is extended.
Claims6
An intermittent operating type pointing device comprising:
- detecting means which can detect the amount of movement due to an external operating force and which performs the intermittent detecting operation every driving period, and
- a control unit which changes the driving period of the detecting means in accordance with the amount of movement detected by the detecting means within a predetermined time, wherein
- data based on a detection output of the detecting means is transmitted to a host computer.
Dependencies are inferred from the claim text.