公开(公告)号：DE3481086D1

公开(公告)日：1990-02-22

申请号：DE3481086

申请日：1984-11-09

Applicant: IBM

Inventor： CASTELLANO JR ,  DISTEFANO THOMAS HERMAN ,  OLYHA JR

IPC: G01N21/88 ,  G01N21/956 ,  G01N27/00 ,  G01R31/265 ,  G01R31/308 ,  H01L21/66 ,  G01R31/26

公开(公告)号：DE69521657T2

公开(公告)日：2002-05-02

申请号：DE69521657

申请日：1995-08-31

Applicant: IBM

Inventor： BARRETT ROBERT C ,  OLYHA JR ,  RUTLEDGE JOSEPH D

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

Abstract: A user interface apparatus and method for a computing or processing system employing a graphical user interface is presented. In order to provide a good user feel, and specifically to avoid a feeling of inertia or sluggishness in cursor motion as the user starts or stops movement, the apparatus and method provide a negative inertia transfer function. That is, the cursor movement signal produced by applying the input parameter to a transfer function in accordance with the invention is related to a sum of (i) the input parameter, and (ii) a signal related to the rate of change of the input parameter. This is preferably implemented as an additive high-pass transfer function. Preferred embodiments can employ analog circuitry or a digitally programmed transfer function algorithm. The input parameter to which the transfer function is applied can be a magnitude signal, such as that from a polar coordinate system, or separate components, such as x- and y-components from a rectangular coordinate system, can be treated separately.

公开(公告)号：DE69521657D1

公开(公告)日：2001-08-16

申请号：DE69521657

申请日：1995-08-31

Applicant: IBM

Inventor： BARRETT ROBERT C ,  OLYHA JR ,  RUTLEDGE JOSEPH D

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

Abstract: A user interface apparatus and method for a computing or processing system employing a graphical user interface is presented. In order to provide a good user feel, and specifically to avoid a feeling of inertia or sluggishness in cursor motion as the user starts or stops movement, the apparatus and method provide a negative inertia transfer function. That is, the cursor movement signal produced by applying the input parameter to a transfer function in accordance with the invention is related to a sum of (i) the input parameter, and (ii) a signal related to the rate of change of the input parameter. This is preferably implemented as an additive high-pass transfer function. Preferred embodiments can employ analog circuitry or a digitally programmed transfer function algorithm. The input parameter to which the transfer function is applied can be a magnitude signal, such as that from a polar coordinate system, or separate components, such as x- and y-components from a rectangular coordinate system, can be treated separately.