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Man-Machine Interface Device for Polar Coordinates

IP.com Disclosure Number: IPCOM000099297D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Kimoto, H: AUTHOR

Abstract

Disclosed is a device for the input/output of (3-D) polar coordinates. The device makes the more visible and easier than the current So this device is useful, for example, for the of the view point or the light direction in 3-D systems and/or 3-D image synthesis systems.

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This is the abbreviated version, containing approximately 83% of the total text.

Man-Machine Interface Device for Polar Coordinates

       Disclosed is a device for the input/output of (3-D) polar
coordinates.  The device makes the more visible and easier than the
current  So this device is useful, for example, for the of the view
point or the light direction in 3-D systems and/or 3-D image
synthesis systems.

      The external form of the device is illustrated in Fig.  The
device consists of a sphere and three dials.

      The sphere rotates in two directions:  theta-direction
phi-direction.  The inputs two elements of 3-D polar (theta, phi) by
rotating the sphere.  Also, the knows the two elements (theta, phi)
by the sphere  There are two marks on the sphere.  The marks show
current coordinate (theta, phi).  One is main, and the is sub.  The
difference between the two is only in  The marks are located exactly
at opposite points to other on the sphere, so that the operator can
see at one of the two at any time.  This prevents the from missing
the current coordinates.

      The three dials are endless dials.  The operator inputs polar
coordinates (r, theta, phi) by rotating each dial. r-dial is for the
input of the r-element.  The others for the fine tuning and/or for
only one-element

      The structure of the device is illustrated in Fig. 2. main
parts are the sphere, the dials, and a control

      The sphere is double.  The inside sphere rotates in the
direction, and the outside sphere rotates in the  The...