JPS6460087A - Signal processing circuit - Google Patents

Signal processing circuit

Info

Publication number
JPS6460087A
JPS6460087A JP62215162A JP21516287A JPS6460087A JP S6460087 A JPS6460087 A JP S6460087A JP 62215162 A JP62215162 A JP 62215162A JP 21516287 A JP21516287 A JP 21516287A JP S6460087 A JPS6460087 A JP S6460087A
Authority
JP
Japan
Prior art keywords
high frequency
low pass
signal
deterioration
characteristic
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
JP62215162A
Other languages
Japanese (ja)
Inventor
Katsumi Arisaka
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62215162A priority Critical patent/JPS6460087A/en
Publication of JPS6460087A publication Critical patent/JPS6460087A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the deterioration of a frequency characteristic and to suppress the generation of a moire by switching a low pass characteristic in accordance with the high frequency component of an input signal. CONSTITUTION:Detecting means 21, 22 for detecting the high frequency component of the input signal and a modulating means 13 for obtaining a signal through the passing means of different frequency characteristics and FM modulating it are provided to select the characteristic of a low pass means according to the quantity of the high frequency component included in the input signal. When a strong spectrum is included in the high frequency area of the signal, the moire is prevented by a low pass filter for lowering a component above 4MHz and at the time of the incoming of an ordinary video signal, it is passed through the low pass filter to prevent the deterioration of a high frequency output and prevent the deterioration of a resolution, accordingly.
JP62215162A 1987-08-31 1987-08-31 Signal processing circuit Pending JPS6460087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62215162A JPS6460087A (en) 1987-08-31 1987-08-31 Signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215162A JPS6460087A (en) 1987-08-31 1987-08-31 Signal processing circuit

Publications (1)

Publication Number Publication Date
JPS6460087A true JPS6460087A (en) 1989-03-07

Family

ID=16667679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215162A Pending JPS6460087A (en) 1987-08-31 1987-08-31 Signal processing circuit

Country Status (1)

Country Link
JP (1) JPS6460087A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1227678A2 (en) * 2001-01-18 2002-07-31 Seiko Epson Corporation Memory efficient image artifact removal technique for liquid crystal projectors
EP1231567A2 (en) * 2001-01-18 2002-08-14 Seiko Epson Corporation Image artifact removal technique for liquid crystal projectors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1227678A2 (en) * 2001-01-18 2002-07-31 Seiko Epson Corporation Memory efficient image artifact removal technique for liquid crystal projectors
EP1231567A2 (en) * 2001-01-18 2002-08-14 Seiko Epson Corporation Image artifact removal technique for liquid crystal projectors
US6879734B2 (en) 2001-01-18 2005-04-12 Seiko Epson Corporation Memory efficient image artifact removal technique for LCP
US6879733B2 (en) 2001-01-18 2005-04-12 Seiko Epson Corporation Image artifact removal technique for LCP

Similar Documents

Publication Publication Date Title
JPS5298408A (en) Mixer circuit
JPS52137924A (en) Colour solid photographing device
JPS6460087A (en) Signal processing circuit
JPS5599847A (en) Digital integrator having leakage function and equalizing circuit using it
JPS5671374A (en) Video recording method
JPS56106449A (en) Am stereo receiver
JPS5246709A (en) Signal receiving equipment
JPS5568774A (en) Blooming preventing device
JPS5514782A (en) Television picture receiver
JPS641393A (en) Voltage control type comb-line filter
JPS56119593A (en) Processing device of color video signal
DE3465564D1 (en) Circuit for steepening the edges of a video signal
JPS54149424A (en) Signal detector of television receiver
GB1490595A (en) Recording apparatus coding circuit for an image signal and corresponding decoding circuit
JPS6464481A (en) Emphasis/deemphasis circuit
JPS5731287A (en) Improving device of picture quality
JPS5453914A (en) Detection circuit for facsimile
JPS5715588A (en) Signal processing circuit
JPS5484964A (en) Detector of amplitude-modulated wave
JPS55143821A (en) Automatic frequency control unit
JPS5315858A (en) Spectrum analyzer
JPS5646385A (en) Dropout compensating circuit
JPS55130272A (en) Deflecting circuit device
JPS57174957A (en) Multi-path interference rejecting circuit
JPS543429A (en) Recording/reproducing device