JPS642121A - Tuning circuit for position indicator - Google Patents

Tuning circuit for position indicator

Info

Publication number
JPS642121A
JPS642121A JP15658687A JP15658687A JPS642121A JP S642121 A JPS642121 A JP S642121A JP 15658687 A JP15658687 A JP 15658687A JP 15658687 A JP15658687 A JP 15658687A JP S642121 A JPS642121 A JP S642121A
Authority
JP
Japan
Prior art keywords
capacitor
switch
circuit
phase
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15658687A
Other languages
Japanese (ja)
Other versions
JP2583512B2 (en
JPH012121A (en
Inventor
Tsugunari Yamanami
Toshiaki Senda
Toshihide Chikami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wacom Co Ltd
Original Assignee
Wacom Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wacom Co Ltd filed Critical Wacom Co Ltd
Priority to JP15658687A priority Critical patent/JP2583512B2/en
Publication of JPH012121A publication Critical patent/JPH012121A/en
Publication of JPS642121A publication Critical patent/JPS642121A/en
Application granted granted Critical
Publication of JP2583512B2 publication Critical patent/JP2583512B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To attain the proceeding of the phase of a signal without using a coil by providing at least one shifting phase circuit composed of an off-switch and a capacitor connected serially to the off-switch.
CONSTITUTION: A coil 1 and a capacitor 2 are mutually serially connected, a capacitor 3 is connected in parallel to the capacitor 2 through an off-switch 4 and these coil 1 and capacitors 2 and 3 constitute a resonance circuit. The off-switch 4 is operated, the contact is interrupted, and thus, the capacity value in the circuit is reduced, the resonance frequency is enlarged and the phase of the signal in the circuit can be essentially proceeded. Thus, since the capacity value of the capacitor is hardly changed by an ambient temperature, the advancing phase angle can be set with good accuracy and can be maintained.
COPYRIGHT: (C)1989,JPO&Japio
JP15658687A 1987-06-25 1987-06-25 Tuning circuit for position indicator Expired - Fee Related JP2583512B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15658687A JP2583512B2 (en) 1987-06-25 1987-06-25 Tuning circuit for position indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15658687A JP2583512B2 (en) 1987-06-25 1987-06-25 Tuning circuit for position indicator

Publications (3)

Publication Number Publication Date
JPH012121A JPH012121A (en) 1989-01-06
JPS642121A true JPS642121A (en) 1989-01-06
JP2583512B2 JP2583512B2 (en) 1997-02-19

Family

ID=15631002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15658687A Expired - Fee Related JP2583512B2 (en) 1987-06-25 1987-06-25 Tuning circuit for position indicator

Country Status (1)

Country Link
JP (1) JP2583512B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992009029A1 (en) * 1990-11-16 1992-05-29 Seiko Instruments Inc. Device for reading out coordinate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992009029A1 (en) * 1990-11-16 1992-05-29 Seiko Instruments Inc. Device for reading out coordinate

Also Published As

Publication number Publication date
JP2583512B2 (en) 1997-02-19

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Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees