公开(公告)号：DE69521268T2

公开(公告)日：2001-11-08

申请号：DE69521268

申请日：1995-10-26

Applicant: IBM

Inventor： KNOW ANDREW ,  BEETESON JOHN S

IPC: G06F3/041 ,  G06F3/033 ,  G06F3/044 ,  H01J29/88 ,  G06K11/16

Abstract: A touch sensor input for a computer display is disclosed in which a conductive coating on the front surface of the display screen is used to determine the position of an object, such as a user's finger, touching the screen. Sensors at the edge of the conductive coating detect changes in the level of ambient field pickup when the user's finger touches the display screen. The conductive coating may optionally be divided into blocks with separate connections to each block, or may have a resistivity profile so as to allow full X and Y co-ordinate determination of the position of the finger. Also, optionally, a stylus generating an electromagnetic field when in contact with the display may be used in place of the finger.

公开(公告)号：DE69521268D1

公开(公告)日：2001-07-19

申请号：DE69521268

申请日：1995-10-26

Applicant: IBM

Inventor： KNOW ANDREW ,  BEETESON JOHN S

IPC: G06F3/041 ,  G06F3/033 ,  G06F3/044 ,  H01J29/88 ,  G06K11/16

Abstract: A touch sensor input for a computer display is disclosed in which a conductive coating on the front surface of the display screen is used to determine the position of an object, such as a user's finger, touching the screen. Sensors at the edge of the conductive coating detect changes in the level of ambient field pickup when the user's finger touches the display screen. The conductive coating may optionally be divided into blocks with separate connections to each block, or may have a resistivity profile so as to allow full X and Y co-ordinate determination of the position of the finger. Also, optionally, a stylus generating an electromagnetic field when in contact with the display may be used in place of the finger.