Input device of rotational operation quantity and operating...

Details Input device of rotational operation quantity and operating... Input device of rotational operation quantity and operating...

2006-07-11

2006-07-11

Osorio, Ricardo (Department: 2673)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Mechanical control

C345S156000

Reexamination Certificate

active

07075527

ABSTRACT:
An efficient rotational-operation-quantity input device suitable to be built into a small electrical appliance is provided. An operational force applied by an operator is input in time series as a coordinate value (x, y) in an XY two-dimensional rectangular coordinate system by a two-dimensional force sensor100, and is converted into a coordinate value (r, θ) by a polar-coordinate converting section200.When a value r of the coordinate value (r, θ) obtained in time series is larger than a predetermined threshold rt, an operation-quantity recognizing section300recognizes the coordinate value (r, θ) as a significant coordinate value, and, when the value θ generates a variation Δθ exceeding a predetermined threshold θt with respect to a value “θ before” immediately therebefore during a period during which a significant coordinate value (r, θ) is obtained continuously, it recognizes a value corresponding to the variation Δθ as an operation quantity indicating a rotation.

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