Cursor display apparatus

• US 4,887,230 A
• Filed: 02/17/1988
• Issued: 12/12/1989
• Est. Priority Date: 02/18/1987
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd., Hitachi Process Computer
• Original Assignee: Hitachi, Ltd., Hitachi Process Computer Engineering, Inc.
• Inventors: Yamada, Hitoshi, Noguchi, Yasuhiro, Funyu, Yukio
• Primary Examiner(s): Lall, Parshotam S.
• Assistant Examiner(s): Teska, Kevin J.
• Application Number:
  US07/156,847
• Time in Patent Office: 664 Days
• Field of Search: 340/709, 340/710, 364/521, 364/522, 364/560, 364/561, 364/709.11
• US Class Current: 345/157
• CPC Class Codes: G06F 3/03544 having dual sensing arrangement, e.g. two balls or two coils used to track rotation of the pointing device
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0383 Signal control means within the pointing device

Abstract

The movement volumes of X and Y to the X axial direction and the Y axial direction and the rotate angle θ of the coordinate input device moved on the substrate, are calculated by the input controller. The calculating device outputs instruction signals to the display device to move the cursor displayed on the display device by the movement volumes of X and Y, and rotate the cursor by the rotation angle corresponding to that calculated by the input controller.

Claims

1. A cursor display apparatus for displaying a cursor for showing an input coordinate position on a display device, comprising:

a coordinate input device moveable on a surface for outputting coordinate values, in ordinate and abscissa directions, of a cursor position on said display device, including a first movement detecting sensor for detecting first movement amounts Δ

Xo, Δ

Yo of said coordinate input device in horizontal and vertical directions corresponding to the extent of movement of the first movement detecting sensor on said surface, and a second movement detecting sensor for detecting second movement amounts Δ

X1, Δ

Y1, of said coordinate input device in horizontal and vertical directions corresponding to the extent of movement of the second movement detecting sensor on said surface;

an input controller coupled to said coordinate input device and having a first movement amount calculating circuit which calculates a cursor moement amount X in the abscissa direction on said display device based on the movement amounts Δ

Xo, Δ

X1 of said coordinate input device in the horizontal direction detected by said first movement detecting sensor, a second movement amount calculating circuit which calculates a cursor movement amount Y in the ordinate direction on said display device based on the movement amounts Δ

Yo, Δ

Y1, in the vertical direction detected by said second movement detecting sensor and a rotation amount calculating circuit which calculates a rotation angle θ

of said cursor displayed on said display device based on the relationship ##EQU1## and a calculating device coupled to said input controller for outputting to said display device cursor data based on said movement amounts X, Y and said rotation angle θ

on said display device based on the output signals from said input controller.

2. A cursor display apparatus for displaying a cursor for showing an input coordinate position on a display device, comprising:

a coordinate input device moveable on a surface for outputting coordinate values, in ordinate and abscissa directions, of a cursor position on said display device, including a movement detecting sensor for detecting movement amounts Δ

Xo, Δ

Yo of said coordinate input device in horizontal and vertical directions corresponding to the extent of movement of the movement detecting sensor on said surface, and an angle movement detector including a button for outputting a signal indicating an angle θ

which is proportional to a time period during which the button is depressed;

an input controller coupled to said coordinate input device and having a first movement amount calculating circuit which calculates a cursor movement amount X in the abscissa direction on said display device based on the movement amount Δ

Xo of said coordinate input device in the horizontal direction detected by said movement detecting sensor, a second movement amount calculating circuit which calculates a cursor movement amount Y in the ordinate direction on said display device based on the movement amount Δ

Yo in the vertical direction detected by said second movement detecting sensor and a rotation amount calculating circuit which calculates a rotation angle θ

'"'"' of said cursor displayed on said display device based on the relationship ##EQU2## where r is a constant; and

a calculating device coupled to said input controller for outputting to said display device cursor data based on said movement amounts X, Y and said rotation angle θ

'"'"' on said display device based on the output signals from said input controller.