JPS6441915A - Method for detecting position phase of digitizer - Google Patents

Method for detecting position phase of digitizer

Info

Publication number
JPS6441915A
JPS6441915A JP19787587A JP19787587A JPS6441915A JP S6441915 A JPS6441915 A JP S6441915A JP 19787587 A JP19787587 A JP 19787587A JP 19787587 A JP19787587 A JP 19787587A JP S6441915 A JPS6441915 A JP S6441915A
Authority
JP
Japan
Prior art keywords
phase voltage
replacing
voltage
phase
frequency
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.)
Pending
Application number
JP19787587A
Other languages
Japanese (ja)
Inventor
Daizo Yamazaki
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.)
Graphtec Corp
Original Assignee
Graphtec Corp
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 Graphtec Corp filed Critical Graphtec Corp
Priority to JP19787587A priority Critical patent/JPS6441915A/en
Publication of JPS6441915A publication Critical patent/JPS6441915A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To shorten a measuring time by generating the replacing phase voltage the same in frequency with a reference phase voltage, and determining a phase difference obtained by operation. CONSTITUTION:The position phase detecting method of the digitizer is constituted of a change-over switch 3, a band pass filter 4, an amplifier 5, a comparator 6, a flip flop (F/F) 7, an AND gate 8, a counter 9 and a clock oscillator 10, and the phase difference between a reference phase voltage 1 and a phase voltage to be measured 2 with the counted value of the counter 9 is detected, etc. At such a time, a replacing phase voltage generating circuit 11 and an F/F 12 are provided. The replacing phase voltage is the voltage of the same frequency as the reference phase voltage 1 and the replacing phase voltage is generated by frequency-dividing the output pulse of the clock oscillator 10 to 1/n. Thus, a phase difference theta0 to the replacing phase voltage of the reference phase voltage 1 can be measured.
JP19787587A 1987-08-07 1987-08-07 Method for detecting position phase of digitizer Pending JPS6441915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19787587A JPS6441915A (en) 1987-08-07 1987-08-07 Method for detecting position phase of digitizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19787587A JPS6441915A (en) 1987-08-07 1987-08-07 Method for detecting position phase of digitizer

Publications (1)

Publication Number Publication Date
JPS6441915A true JPS6441915A (en) 1989-02-14

Family

ID=16381771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19787587A Pending JPS6441915A (en) 1987-08-07 1987-08-07 Method for detecting position phase of digitizer

Country Status (1)

Country Link
JP (1) JPS6441915A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05119908A (en) * 1991-05-06 1993-05-18 Internatl Business Mach Corp <Ibm> Electromagnetic digitizer tablet and guiding pen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05119908A (en) * 1991-05-06 1993-05-18 Internatl Business Mach Corp <Ibm> Electromagnetic digitizer tablet and guiding pen

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