公开(公告)号：DE69027778D1

公开(公告)日：1996-08-14

申请号：DE69027778

申请日：1990-12-14

Applicant: IBM

Inventor： BEARDALL GAVIN DAVID ,  CALDER GARY JAMES

IPC: G06F3/023 ,  G06F3/033 ,  G06F3/038 ,  G06F3/041 ,  G06F3/048

Abstract: A coordinate processor for a computer system having an absolute position pointing device (10) such as a touch sensitive display screen comprises stimulus detection means (200) for detecting a tactile stimulus of an absolute position pointing device (10) directed to a point within a data display area (610) of a computer system. The processor further comprises coordinate locking means (210-320) for locking a current cursor position to the point within the display area corresponding to the tactile stimulus in response to said stimulus exceeding a predetermined threshold value. The processor permits the computer system to distinguish a stimulus of the pointing device (10) for repositioning the cursor within the data display area (610) from a stimulus of the pointing device (10) for issuing a button click command to the computer system. The processor may be embodied in an electronic logic circuit within a pointing device adapter portion of the computer system. Equally, the coordinate processor may be in the form of a central processing unit operating under the control of a computer program.

公开(公告)号：DE69027778T2

公开(公告)日：1997-01-23

申请号：DE69027778

申请日：1990-12-14

Applicant: IBM

Inventor： BEARDALL GAVIN DAVID ,  CALDER GARY JAMES

IPC: G06F3/023 ,  G06F3/033 ,  G06F3/038 ,  G06F3/041 ,  G06F3/048

Abstract: A coordinate processor for a computer system having an absolute position pointing device (10) such as a touch sensitive display screen comprises stimulus detection means (200) for detecting a tactile stimulus of an absolute position pointing device (10) directed to a point within a data display area (610) of a computer system. The processor further comprises coordinate locking means (210-320) for locking a current cursor position to the point within the display area corresponding to the tactile stimulus in response to said stimulus exceeding a predetermined threshold value. The processor permits the computer system to distinguish a stimulus of the pointing device (10) for repositioning the cursor within the data display area (610) from a stimulus of the pointing device (10) for issuing a button click command to the computer system. The processor may be embodied in an electronic logic circuit within a pointing device adapter portion of the computer system. Equally, the coordinate processor may be in the form of a central processing unit operating under the control of a computer program.