INPUT PEN

• Main Author: AONO YOSHITAMI
• Format: Patent
• Language: English
• Published: 10.07.1984
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

PURPOSE:To reduce the cost of a digitizer and also to obtain a miniature input pen which is easy to use by forming a coil sensor which detects the magnetic field of the digitizer by winding a lead wire round the outer circumferential surface of a bobbin made of a magnetic body with a cylindrical form, etc. CONSTITUTION:A coil sensor 10 is formed by winding a lead wire round the outer circumferential surface of a cylindrical bobbin made of a magnetic body. This sensor 10 is mounted inside the outer barrel 8 of a slender cylindrical form having an end face plate 8a formed at the lower edge. A felt pen 1 of a columnar shape is put through the center hole of the plate 8a as well as an axial hole of the bobbin 9 in a freely drivable way toward the axial center. A picture is drawn to a white plate, etc., put on a digitizer with a tip of the input pen 1. Then the pen 1 is put into the barrel 8, and a mobile contact 6a is connected to a fixed contact 6b. Thus a circuit between electronic display devices is closed by terminals 10a and 10b of the sensor 10. In a such constitution, the magnetic flux of the rotary magnetic field interlinks the sensor 10 much more frequently.