JPS56143018A - Noise rejecting circuit - Google Patents

Noise rejecting circuit

Info

Publication number
JPS56143018A
JPS56143018A JP4462880A JP4462880A JPS56143018A JP S56143018 A JPS56143018 A JP S56143018A JP 4462880 A JP4462880 A JP 4462880A JP 4462880 A JP4462880 A JP 4462880A JP S56143018 A JPS56143018 A JP S56143018A
Authority
JP
Japan
Prior art keywords
circuit
signal
output
level
ff10
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
JP4462880A
Other versions
JPS6236571B2 (en
Inventor
Isao Fukushima
Katsuhiko Goto
Yasunori Kobori
Hideo Nishijima
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55044628A priority Critical patent/JPS6236571B2/ja
Publication of JPS56143018A publication Critical patent/JPS56143018A/en
Publication of JPS6236571B2 publication Critical patent/JPS6236571B2/ja
Application status is Expired legal-status Critical

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise

Abstract

PURPOSE:To reject the noise produced in the leading and trailing of the rotating detection pulse signal and to make the circuit suitable for the servo circuit by digital signal processing, by constituting of R-FF, T-FF, coincidence circuit and counter circuit. CONSTITUTION:When a pulse signal 16 overlapping noise at leading and trailing is input at the input terminal 8, if the output 18 of T-FF11 is at H level, the output of a coincidence circuit 9 is at H level, and an R-FF10 is set. This output signal 19 and the reference clock signal 17 are fed to the counter circuit 14. When the output 21 of the circuit 14 is fed as the reset signal of FF10 and the clock signal of FF11, FF10 is reset and the output signal 19 is at L level. In this case, the circuit 14 is reset with the inverting signal Q' of the output signal 19. Thus, the counter output 21 is again at L level. On the other hand, the output 18 of T-FF11 is triggered with the said output signal 21 and inverted into L level. The coincidence with the L level at the trailing timing of the input signal 16 is detected at the circuit 9 and FF10 is again set.
JP55044628A 1980-04-07 1980-04-07 Expired JPS6236571B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55044628A JPS6236571B2 (en) 1980-04-07 1980-04-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55044628A JPS6236571B2 (en) 1980-04-07 1980-04-07

Publications (2)

Publication Number Publication Date
JPS56143018A true JPS56143018A (en) 1981-11-07
JPS6236571B2 JPS6236571B2 (en) 1987-08-07

Family

ID=12696682

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55044628A Expired JPS6236571B2 (en) 1980-04-07 1980-04-07

Country Status (1)

Country Link
JP (1) JPS6236571B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477312A (en) * 1987-09-18 1989-03-23 Aisin Seiki Noise removing circuit
JPH01105205A (en) * 1987-07-30 1989-04-21 Mitsubishi Rayon Co Ltd Clad material for optical fiber
JPH02307382A (en) * 1989-05-19 1990-12-20 Sanyo Electric Co Ltd Circuit for controlling motor speed
EP2037580A1 (en) * 2006-07-03 2009-03-18 Toshiba Kikai Kabushiki Kaisha Digital filter device, phase detection device, position detection device, ad conversion device, zero cross detection device, and digital filter program
JP2010130550A (en) * 2008-11-28 2010-06-10 Seiko Epson Corp Clock generating apparatus, and jitter reducing method in the same
JP2010141499A (en) * 2008-12-10 2010-06-24 Toshiba Corp Trigger signal detection apparatus
JP2011004072A (en) * 2009-06-17 2011-01-06 Renesas Electronics Corp Digital noise filter circuit
JP2011097138A (en) * 2009-10-27 2011-05-12 Renesas Electronics Corp Noise reduction circuit and semiconductor device provided with noise reduction circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524158A (en) * 1975-06-24 1977-01-13 Hitachi Ltd Noise eliminator
JPS5313086A (en) * 1976-07-21 1978-02-06 Matsushita Electric Ind Co Ltd Digital speed control sys tem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524158A (en) * 1975-06-24 1977-01-13 Hitachi Ltd Noise eliminator
JPS5313086A (en) * 1976-07-21 1978-02-06 Matsushita Electric Ind Co Ltd Digital speed control sys tem

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01105205A (en) * 1987-07-30 1989-04-21 Mitsubishi Rayon Co Ltd Clad material for optical fiber
JPS6477312A (en) * 1987-09-18 1989-03-23 Aisin Seiki Noise removing circuit
JPH02307382A (en) * 1989-05-19 1990-12-20 Sanyo Electric Co Ltd Circuit for controlling motor speed
EP2037580A1 (en) * 2006-07-03 2009-03-18 Toshiba Kikai Kabushiki Kaisha Digital filter device, phase detection device, position detection device, ad conversion device, zero cross detection device, and digital filter program
EP2037580A4 (en) * 2006-07-03 2014-02-19 Toshiba Machine Co Ltd Digital filter device, phase detection device, position detection device, ad conversion device, zero cross detection device, and digital filter program
JP2010130550A (en) * 2008-11-28 2010-06-10 Seiko Epson Corp Clock generating apparatus, and jitter reducing method in the same
US8339160B2 (en) 2008-11-28 2012-12-25 Seiko Epson Corporation Clock generating device and jitter reducing method in the clock generating device
JP2010141499A (en) * 2008-12-10 2010-06-24 Toshiba Corp Trigger signal detection apparatus
JP2011004072A (en) * 2009-06-17 2011-01-06 Renesas Electronics Corp Digital noise filter circuit
JP2011097138A (en) * 2009-10-27 2011-05-12 Renesas Electronics Corp Noise reduction circuit and semiconductor device provided with noise reduction circuit

Also Published As

Publication number Publication date
JPS6236571B2 (en) 1987-08-07

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