JPS56115024A - Automatic threshold level setting circuit - Google Patents
Automatic threshold level setting circuitInfo
- Publication number
- JPS56115024A JPS56115024A JP1729680A JP1729680A JPS56115024A JP S56115024 A JPS56115024 A JP S56115024A JP 1729680 A JP1729680 A JP 1729680A JP 1729680 A JP1729680 A JP 1729680A JP S56115024 A JPS56115024 A JP S56115024A
- Authority
- JP
- Japan
- Prior art keywords
- input signal
- threshold level
- maximum
- fluctuation
- minimum values
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
- H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To set the threshold level at the optimum value following the DC level as well as the amplitude of an input signal, by detecting both the maximum and minimum values of the input signal and thus using the mean value of these maximum and minimum values for the comparing threshold level to the input signal. CONSTITUTION:The input signal is applied to the input terminal 23 of the comparator 22 as well as to both the maximum and minimum value detector circuits 25 and 26 each to detect the maximum and minimum values of the input signal. The mean value detector circuit 27 averages the supplied maximum and minimum values of the input signal to use the mean value for the reference voltage of the circuit 22. Thus the threshold level has a fluctuation by the same value although the amplitude of the input signal has a fluctuation and the DC level of the input signal has a fluctuation. As a result, the threshold level is always set at 1/2 the input amplitude, and thus a fluctuation can be prevented for the duration of the output pulse.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1729680A JPS56115024A (en) | 1980-02-15 | 1980-02-15 | Automatic threshold level setting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1729680A JPS56115024A (en) | 1980-02-15 | 1980-02-15 | Automatic threshold level setting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56115024A true JPS56115024A (en) | 1981-09-10 |
Family
ID=11940027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1729680A Pending JPS56115024A (en) | 1980-02-15 | 1980-02-15 | Automatic threshold level setting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56115024A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0186324U (en) * | 1987-11-27 | 1989-06-07 | ||
WO1990006578A1 (en) * | 1988-11-25 | 1990-06-14 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Process for recovering a coded signal sequence |
EP0602697A1 (en) * | 1992-12-14 | 1994-06-22 | Delco Electronics Corporation | Analogue to digital converter |
EP0684455A1 (en) * | 1994-05-27 | 1995-11-29 | Snr Roulements | Interpolation circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5356918A (en) * | 1976-11-01 | 1978-05-23 | Oki Electric Ind Co Ltd | Picture read system |
-
1980
- 1980-02-15 JP JP1729680A patent/JPS56115024A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5356918A (en) * | 1976-11-01 | 1978-05-23 | Oki Electric Ind Co Ltd | Picture read system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0186324U (en) * | 1987-11-27 | 1989-06-07 | ||
WO1990006578A1 (en) * | 1988-11-25 | 1990-06-14 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Process for recovering a coded signal sequence |
EP0602697A1 (en) * | 1992-12-14 | 1994-06-22 | Delco Electronics Corporation | Analogue to digital converter |
EP0684455A1 (en) * | 1994-05-27 | 1995-11-29 | Snr Roulements | Interpolation circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5698060A (en) | Receiving circuit | |
DE3865336D1 (en) | CIRCUIT TO DETECT PULSES USING AMPLITUDE AND TIME QUALIFICATION. | |
JPS57154919A (en) | Detecting system for high frequency faulty power level | |
JPS55109968A (en) | Frequency decision circuit | |
JPS56115024A (en) | Automatic threshold level setting circuit | |
JPS56115023A (en) | Automatic threshold level controlling circuit | |
JPS56163835A (en) | Detecting device for electric discharge machining state | |
JPS57111425A (en) | Detector of ic chip temperature | |
JPS5514706A (en) | Reception detector circuit | |
JPS57190273A (en) | Circuit for detecting dropout of signal on magnetic tape | |
JPS56148178A (en) | Switching constant voltage source | |
JPS57192155A (en) | Optical receiver | |
JPS562767A (en) | Impulsive noise eliminating circuit | |
JPS55103079A (en) | Switching regulator | |
JPS57176485A (en) | Thresholding device | |
JPS5571319A (en) | Comparator circuit system | |
JPS56163834A (en) | State detector for electric discharge machining | |
JPS5790723A (en) | Power supply device | |
JPS57154965A (en) | Constant current source type filter having self-bias function | |
JPS5726940A (en) | Agc circuit | |
JPS641348A (en) | Transmitter-receiver | |
JPS57177281A (en) | Power supplying method using converter | |
JPS5780842A (en) | Pilot signal detecting device | |
JPS57150222A (en) | Binary signal converting circuit | |
JPS6422110A (en) | Power source instantaneous break detecting circuit |