JPS5513875A - Frequency detector - Google Patents
Frequency detectorInfo
- Publication number
- JPS5513875A JPS5513875A JP8692378A JP8692378A JPS5513875A JP S5513875 A JPS5513875 A JP S5513875A JP 8692378 A JP8692378 A JP 8692378A JP 8692378 A JP8692378 A JP 8692378A JP S5513875 A JPS5513875 A JP S5513875A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- frequency
- input
- input signal
- pulse
- 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
Links
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
PURPOSE: To improve resolution and response by obtaining frequency information of an input signal by generating pulses of a frequency several times as high as that of the input signal and by counting the number of the pulses at a reference time.
CONSTITUTION: Input pulse P to be frequency-detected is inputted from one-shot circuit 1 to circuit 2, where pulses synchronizing with the rise and fall are generated respectively. Reference clocks generating part 3 generates reference clock pulse CP of a frequency much higher than that of input pulse P and it is led to dividers 4 to 12 to generate pulse signals having frequencies N times as high as that of the input signal, which are counted by counter 11. Therefore, frequency information of input pulses P updated invariably in a fixed reference period is outputted from latch circuit 15.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8692378A JPS5513875A (en) | 1978-07-17 | 1978-07-17 | Frequency detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8692378A JPS5513875A (en) | 1978-07-17 | 1978-07-17 | Frequency detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5513875A true JPS5513875A (en) | 1980-01-31 |
JPS6118989B2 JPS6118989B2 (en) | 1986-05-15 |
Family
ID=13900370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8692378A Granted JPS5513875A (en) | 1978-07-17 | 1978-07-17 | Frequency detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5513875A (en) |
-
1978
- 1978-07-17 JP JP8692378A patent/JPS5513875A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6118989B2 (en) | 1986-05-15 |
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