System and method for moving a cursor on a screen

摘要

The invention provides a system (10) and method for moving a cursor (16) in response to pointing device movements according to a certain transfer function, wherein the transfer function is such that when the cursor (16) hits the edge of the screen (12) and the pointing device movement continues further beyond this point in a direction which cannot be followed by the cursor (16) due to reaching the edge of the screen (12), the pointing device movement is remembered and the cursor (16) starts moving away from the edge again, when the pointing device (20) is moved back by the same distance as it was moved beyond the point when the cursor (16) had hit the edge of the screen (12); or wherein the transfer function is variable according to previous pointing device movements, which were made within a previous time frame, such that small movements within the previous time frame lead to the ratio of pointing device movement to the cursor movement being greater than in the case of large movements within the previous time frame. The invention further provides a computer program for executing such a method, a data storage medium on which such a computer program is stored and a medical device comprising such a system or being adapted to execute such a method.

主权项

1. A system for moving a cursor, the system comprising:
a pointing device for entering commands in form of a pointing device movement being the movement of the pointing device as a whole or part of it; a screen on which the cursor is displayable; and a control device being connected with the pointing device and the screen, and being configured for controlling the movement of the cursor within edges of the screen in response to the pointing device movement according to a certain transfer function, wherein the transfer function is such that when the cursor hits the edge of the screen and the pointing device movement continues further beyond this point in a direction which cannot be followed by the cursor due to reaching the edge of the screen, the pointing device movement is remembered and the cursor starts moving away from the edge again, when the pointing device as a whole or part of it is moved back by the same distance as it was moved beyond the time point when the cursor had bit the edge of the screen.