JPS57196167A - Device of generating digital signal representing input pulse frequency - Google Patents
Device of generating digital signal representing input pulse frequencyInfo
- Publication number
- JPS57196167A JPS57196167A JP8083681A JP8083681A JPS57196167A JP S57196167 A JPS57196167 A JP S57196167A JP 8083681 A JP8083681 A JP 8083681A JP 8083681 A JP8083681 A JP 8083681A JP S57196167 A JPS57196167 A JP S57196167A
- Authority
- JP
- Japan
- Prior art keywords
- input pulse
- counter
- input
- counters
- rise
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
PURPOSE:To detect rapidly the reciprocal of the period of input pulse by presetting a deduction counter and an addition counter by means of input pulse and at the same time controlling the frequency of an oscillator for counting by means of the outputs of both counters. CONSTITUTION:Input pulse is input to a monostable multivibrator MS2 through a monostable multi-vibrator MS1, and at the rise of signal S2 deduction counter CN1 and addition counter CN2 are respectively preset at 2N<-1> and 2N<-2>. By the outputs of a group of terminals of those counters CN1 and CN2, switches S0- SN-1 and W0-WN-1 are turned on, and the output pulse (p) of an oscillator OSC is inputted to the counters CN1 and CN2. The output of the decuction counter CN1 is maintained by a latch LA due to the rise of a signal S1 that is obtained by the next rise of the input pulse, and at the same time it is sent out to outside as digital output. With this arrangement values that are proportional to the reciprocal of the input period, that is the frequency can be obtained rapidly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8083681A JPS57196167A (en) | 1981-05-29 | 1981-05-29 | Device of generating digital signal representing input pulse frequency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8083681A JPS57196167A (en) | 1981-05-29 | 1981-05-29 | Device of generating digital signal representing input pulse frequency |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57196167A true JPS57196167A (en) | 1982-12-02 |
JPS6349190B2 JPS6349190B2 (en) | 1988-10-03 |
Family
ID=13729460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8083681A Granted JPS57196167A (en) | 1981-05-29 | 1981-05-29 | Device of generating digital signal representing input pulse frequency |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57196167A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0233474A2 (en) * | 1986-02-17 | 1987-08-26 | Robert Bosch Gmbh | Device for determining the number of revolutions of a shaft |
US7508886B2 (en) | 2005-03-29 | 2009-03-24 | Lockheed Martin Corporation | System for generating a digital signal |
-
1981
- 1981-05-29 JP JP8083681A patent/JPS57196167A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0233474A2 (en) * | 1986-02-17 | 1987-08-26 | Robert Bosch Gmbh | Device for determining the number of revolutions of a shaft |
US7508886B2 (en) | 2005-03-29 | 2009-03-24 | Lockheed Martin Corporation | System for generating a digital signal |
Also Published As
Publication number | Publication date |
---|---|
JPS6349190B2 (en) | 1988-10-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5537002A (en) | Fs modulation system | |
JPS57196167A (en) | Device of generating digital signal representing input pulse frequency | |
EP0048638A3 (en) | Maximum frequency limiter | |
JPS5520007A (en) | Interlace circuit | |
SU559384A1 (en) | Device for the formation of a symmetrical triangular voltage | |
ES467505A1 (en) | Circuit for producing a digital count representing the average value of a variable frequency | |
SU1059659A1 (en) | Digital frequency discriminator | |
JPS5448149A (en) | A/d converter using ring oscillation | |
JPS5429955A (en) | Frequency devider circuit | |
SU1088102A1 (en) | Multivibrator | |
JPS5579526A (en) | Digital type delay circuit | |
JPS5671474A (en) | Control device of inverter | |
JPS57164623A (en) | Generating circuit for reference signal having long time interval | |
JPS55166336A (en) | D/a converter | |
JPS5530715A (en) | Digital timer circuit | |
JPS5742859A (en) | Frequency converting circuit | |
JPS551703A (en) | Programmable pulse generator | |
JPS5783923A (en) | Controller for pulse width modulation | |
JPS56119579A (en) | Digital type vertical synchronizing circuit | |
JPS57193802A (en) | Multiplex processing device | |
JPS5753665A (en) | Velocity signal converting circuit | |
JPS54146944A (en) | Digital pulse phase shifter | |
JPS6449328A (en) | A/d convertor | |
JPS54112466A (en) | Numerical controller | |
JPS57181227A (en) | Analog-to-digital converter |