JPS6441915A - Method for detecting position phase of digitizer - Google Patents
Method for detecting position phase of digitizerInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-07 JP JP19787587A patent/JPS6441915A/en active Pending
Cited By (1)
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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