JPS646768A - Signal-level detection circuit - Google Patents

Signal-level detection circuit

Info

Publication number
JPS646768A
JPS646768A JP62162003A JP16200387A JPS646768A JP S646768 A JPS646768 A JP S646768A JP 62162003 A JP62162003 A JP 62162003A JP 16200387 A JP16200387 A JP 16200387A JP S646768 A JPS646768 A JP S646768A
Authority
JP
Japan
Prior art keywords
signal
capacitor
charged
detection circuit
diode
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
Application number
JP62162003A
Other languages
Japanese (ja)
Inventor
Takaaki Hashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Original Assignee
Nikon Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nikon Corp filed Critical Nikon Corp
Priority to JP62162003A priority Critical patent/JPS646768A/en
Publication of JPS646768A publication Critical patent/JPS646768A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To improve detecting accuracy and to improve response, by integrating the output voltage of a detection circuit, which detects the level of a signal that is generated periodically, sampling and holding the output voltage at a fixed timing based on a signal generation period, and resetting an integration circuit immediately after the holding. CONSTITUTION:When a periodic video signal Ei is inputted into a level detection circuit 7, the video signal Ei is detected with a diode 4. A capacitor 6 is charged with the detected voltage. Even if the video signal has reached a peak level and then the signal is decreased, the charged voltage corresponding to the peak level of the input signal is maintained in the capacitor 6 owing to the blocking of the discharge of the capacitor 6 with the diode 4. Said charged voltage is charged into a capacitor 14 and maintained by way of a FET 11. A reset pulse is imparted to a reset circuit 9 at a starting timing Tr of horizontal blanking. A FET 15 is turned ON through a diode 17. The maintained signal charge is discharged and reset. The charge in the capacitor 6 becomes 0V. Then the next charging is performed.
JP62162003A 1987-06-29 1987-06-29 Signal-level detection circuit Pending JPS646768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162003A JPS646768A (en) 1987-06-29 1987-06-29 Signal-level detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162003A JPS646768A (en) 1987-06-29 1987-06-29 Signal-level detection circuit

Publications (1)

Publication Number Publication Date
JPS646768A true JPS646768A (en) 1989-01-11

Family

ID=15746192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162003A Pending JPS646768A (en) 1987-06-29 1987-06-29 Signal-level detection circuit

Country Status (1)

Country Link
JP (1) JPS646768A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015509275A (en) * 2012-02-01 2015-03-26 コーニンクレッカ フィリップス エヌ ヴェ Driver device and driving method for driving a load, in particular, an LED unit having one or more LEDs
JP2022039237A (en) * 2020-08-28 2022-03-10 古河電気工業株式会社 Pulse signal detector, pulse signal generator, laser device, and pulse signal detection method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107167A (en) * 1983-11-15 1985-06-12 Toshiba Corp Data transmitter
JPS6182174A (en) * 1984-03-26 1986-04-25 Otani Denki Kk Peak detecting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107167A (en) * 1983-11-15 1985-06-12 Toshiba Corp Data transmitter
JPS6182174A (en) * 1984-03-26 1986-04-25 Otani Denki Kk Peak detecting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015509275A (en) * 2012-02-01 2015-03-26 コーニンクレッカ フィリップス エヌ ヴェ Driver device and driving method for driving a load, in particular, an LED unit having one or more LEDs
JP2022039237A (en) * 2020-08-28 2022-03-10 古河電気工業株式会社 Pulse signal detector, pulse signal generator, laser device, and pulse signal detection method

Similar Documents

Publication Publication Date Title
JPS55145481A (en) Mos image sensor
CA2393514A1 (en) Photodetector and method for detecting radiation
JPS57111120A (en) Reset pulse generator
ES8106990A1 (en) Pulse generator for a horizontal deflection system
JPS646768A (en) Signal-level detection circuit
US4616138A (en) Analog-type fire detector
JPS57173562A (en) Ignition device
JPS55143833A (en) Time controlling unit
JPS56154880A (en) Solid-state image sensor
JPS5448470A (en) A/d conversion circuit
JPS5534977A (en) Battery voltage detector
JPS57181281A (en) Television receiver
JPS56148795A (en) Charge transfer device
WO1997032218A3 (en) Circuit for detecting a level or a level variation of an input direct voltage
JPS56169969A (en) Synchronisum separation circuit
JPS54152849A (en) Binary coding device
JPS5485632A (en) Driving method for solid state pickup element
JPS57194677A (en) Signal processing circuit of solid state image pickup device
JPS54138362A (en) Analog-digital conversion unit
JPS5487280A (en) Analog input circuit
JPS5519781A (en) X ray photographying timer
JPS5770404A (en) Capacitance detecting circuit
JPS57135520A (en) D/a converter
SU970230A1 (en) Device for sweep ramp voltage synchronizing and shaping
JPS552915A (en) Device to detect number of revolution