Invention Grant
- Patent Title: Position pointer of the electromagnetic induction type and electronic ink cartridge
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Application No.: US15019747Application Date: 2016-02-09
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Publication No.: US10234962B2Publication Date: 2019-03-19
- Inventor: Masayuki Obata
- Applicant: Wacom Co., Ltd.
- Applicant Address: JP Saitama
- Assignee: Wacom Co., Ltd.
- Current Assignee: Wacom Co., Ltd.
- Current Assignee Address: JP Saitama
- Agency: Seed IP Law Group LLP
- Priority: JP2012-167827 20120728
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F3/0354 ; G01B7/00 ; H01F38/00 ; G06F3/046

Abstract:
A position pointer is disclosed, in which an electronic ink cartridge of an electromagnetic induction type is accommodated. The electronic ink cartridge includes a resonance circuit having a coil and a capacitor circuit, and is configured to detect pressure applied to a core member accommodated in the position pointer based on a variation of a resonance frequency of the resonance circuit. The cartridge includes a tubular member, in which the core member and the coil are accommodated such that the coil is positioned between the core member, which extends outwardly from one end of the tubular member, and the capacitor circuit along a direction of a center axis of the tubular member. The cartridge also includes a connection member in the tubular member, which electrically connects a first end and a second end of the coil to a first terminal and a second terminal of the capacitor circuit, respectively.
Public/Granted literature
- US20160162053A1 POSITION POINTER OF THE ELECTROMAGNETIC INDUCTION TYPE AND ELECTRONIC INK CARTRIDGE Public/Granted day:2016-06-09
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