JPS5585257A - Phase difference measuring circuit - Google Patents
Phase difference measuring circuitInfo
- Publication number
- JPS5585257A JPS5585257A JP15745778A JP15745778A JPS5585257A JP S5585257 A JPS5585257 A JP S5585257A JP 15745778 A JP15745778 A JP 15745778A JP 15745778 A JP15745778 A JP 15745778A JP S5585257 A JPS5585257 A JP S5585257A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- counter
- phase difference
- frequency
- data
- 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
Landscapes
- Measuring Phase Differences (AREA)
Abstract
PURPOSE: To accomplish a highly accurate measurement of phase difference by taking logical product of the signal A and the signal B within a frequency f, and when the signal is positive, counter is counted by the pulse of the frequency nf whose value is substracted from n/2.
CONSTITUTION: Signals A and B are turned to a signal a through "and" with an and circuit 10. The signal B is multiplied by n to a signal b with a frequency mulitiplier 13. "And" of the signal a and b constitutes a clock of a counter 14. The signal A is applied to the counter 9. The number of the clock is counted by the counter 14 when the output c of the counter 9 is positive and memorized in a register 15. A data is transfered to a complementary counter 16 with the rise of the signal b and converted to the complement of 2. The data is provided to an adder 17. With the addition of the data and the binary of n/2, phase difference the signal A and B can be determined.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15745778A JPS5585257A (en) | 1978-12-22 | 1978-12-22 | Phase difference measuring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15745778A JPS5585257A (en) | 1978-12-22 | 1978-12-22 | Phase difference measuring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5585257A true JPS5585257A (en) | 1980-06-27 |
Family
ID=15650071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15745778A Pending JPS5585257A (en) | 1978-12-22 | 1978-12-22 | Phase difference measuring circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5585257A (en) |
-
1978
- 1978-12-22 JP JP15745778A patent/JPS5585257A/en active Pending
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