Optical system for determining the roll orientation of a remote

Details Optical system for determining the roll orientation of a remote Optical system for determining the roll orientation of a remote

1994-01-07

1996-11-12

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345166, 356138, 3561521, G09G 508

Patent

active

055744796

ABSTRACT:
A system for determining the pointing orientation of a remote unit relative to a base unit. The fixed base unit comprises at least one light source for emitting at least one light beam, and a polarizer for polarizing light emitted by said light source in at least one particular predetermined orientation. The movable remote unit comprises a photodetector for detecting light emitted by said light source means of the fixed base unit and determining components of pitch, yaw and roll of the remote unit relative to the base unit. The remote unit transmits signals related to the pitch, yaw and roll to the base unit. Either the base unit or the remote unit may compute corrected pitch and yaw of the remote unit on the basis of the roll of the remote unit. The roll information may be used alone to rotate an icon in a graphical user interface on a television or computer screen.

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