Coordinate detection device

• US 6,344,847 B1
• Filed: 07/22/1998
• Issued: 02/05/2002
• Est. Priority Date: 10/03/1997
• Status: Expired due to Term

• Current Assignee: Fujitsu Takamisawa Component Limited
• Original Assignee: Fujitsu Takamisawa Component Limited
• Inventors: Nagao, Naoyuki
• Primary Examiner(s): Jankus, Almis R.
• Application Number:
  US09/120,338
• Time in Patent Office: 1,294 Days
• Field of Search: 345/173-179, 345/146, 345/163
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04186 Touch location disambiguation
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A coordinate detection device includes a coordinate input panel which generates coordinate data based on voltages obtained when the coordinate input panel is touched, a first unit which determines whether a touch operation on the coordinate input panel satisfies a predetermined condition, and a second unit which outputs switch information based on a result of a determination executed by the first unit.

Claims

1. A coordinate detection device, comprising:

coordinate input panel which generates coordinate data based on voltages obtained when the coordinate input panel is touched; and

a unit generating switch information using the coordinate data when the coordinate input panel is touched at a first point and is then touched at a second point while being touched at the first point, said switch information depending on the coordinates of the second point with respect to those of the first point.

2. A coordinate detection device, comprising:

a coordinate input panel which generates coordinate data based on voltages obtained when the coordinate input panel is touched; and

a unit generating switch information using the coordinate data when the coordinate input panel is touched at a first point and is then touched at a second point while being touched at the first point and generating different switch information when the coordinate input panel is touched at a third point different from the second point while being touched at the first point.

3. A coordinate detection device, comprising:

a coordinate input panel which generates coordinate data based on voltages obtained when the coordinate input panel is touched, said coordinate input panel including segmented areas; and

a unit generating switch information by using the coordinate data when the coordinate input panel is touched on one of the segmented areas, said switch information having different items depending on the segmented areas.