JPS57193179A - Movement compensating noise reducing device - Google Patents

Movement compensating noise reducing device

Info

Publication number
JPS57193179A
JPS57193179A JP56077924A JP7792481A JPS57193179A JP S57193179 A JPS57193179 A JP S57193179A JP 56077924 A JP56077924 A JP 56077924A JP 7792481 A JP7792481 A JP 7792481A JP S57193179 A JPS57193179 A JP S57193179A
Authority
JP
Japan
Prior art keywords
movement
picture
picture signal
signal
estimating
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
Application number
JP56077924A
Other languages
Japanese (ja)
Other versions
JPH027553B2 (en
Inventor
Yuichi Ninomiya
Yoshimichi Otsuka
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting 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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP56077924A priority Critical patent/JPS57193179A/en
Priority to US06/373,268 priority patent/US4500911A/en
Publication of JPS57193179A publication Critical patent/JPS57193179A/en
Publication of JPH027553B2 publication Critical patent/JPH027553B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Abstract

PURPOSE:To reduce noises, by preventing malfunction caused by the effect of the noise produced when the movement of a picture is detected for the switching positive feedback which is carried out between the movement compensation estimating picture signal and the nonmovement compensation estimating picture signal and according to the result of detection for the presence of absence of the movement of picture given for each picture element. CONSTITUTION:A 1-frame preceding picture signal which is supplied to a movement detecting circuit 5 is compared with a present frame picture signal supplied from an input terminal to detect the movement of a picture. The movement vector thus obtained is supplied to a movement compensating circuit 6. Then a compensation estimating the movement of the picture is applied to the 1-frame preceding picture signal supplied from a frame memory 4 to form a movement compensation estimating signal. This estimating signal is led to a deciding circuit 7 via a switch 8. The circuit 7 decides whether the nonmovement or movement compensation estimating signal is more approximate to the present frame picture signal. Then the picture signal which is more approximate to the frame picture signal is fed to a subtractor 1 via the switch 8 as well as to an adder 3. Thus a desired noise reduced output picture signal is obtained.
JP56077924A 1981-05-25 1981-05-25 Movement compensating noise reducing device Granted JPS57193179A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56077924A JPS57193179A (en) 1981-05-25 1981-05-25 Movement compensating noise reducing device
US06/373,268 US4500911A (en) 1981-05-25 1982-04-29 Noise reduction apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077924A JPS57193179A (en) 1981-05-25 1981-05-25 Movement compensating noise reducing device

Publications (2)

Publication Number Publication Date
JPS57193179A true JPS57193179A (en) 1982-11-27
JPH027553B2 JPH027553B2 (en) 1990-02-19

Family

ID=13647630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077924A Granted JPS57193179A (en) 1981-05-25 1981-05-25 Movement compensating noise reducing device

Country Status (1)

Country Link
JP (1) JPS57193179A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796088A (en) * 1986-05-20 1989-01-03 Sanyo Electric Co., Ltd. Noise reducer using magnitude of noise and non-linear signal processing
JPH01128677A (en) * 1987-11-13 1989-05-22 Nippon Hoso Kyokai <Nhk> Motion correcting type contour correcting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4973031B2 (en) * 2006-07-03 2012-07-11 ソニー株式会社 Noise suppression method, noise suppression method program, recording medium recording noise suppression method program, and noise suppression device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432924A (en) * 1977-08-19 1979-03-10 Sony Corp Noise eliminator circuit
JPS5527765A (en) * 1978-08-21 1980-02-28 Hitachi Ltd Noise eliminating system
JPS5537018A (en) * 1978-09-08 1980-03-14 Nippon Hoso Kyokai <Nhk> Moving correction noise lowering system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432924A (en) * 1977-08-19 1979-03-10 Sony Corp Noise eliminator circuit
JPS5527765A (en) * 1978-08-21 1980-02-28 Hitachi Ltd Noise eliminating system
JPS5537018A (en) * 1978-09-08 1980-03-14 Nippon Hoso Kyokai <Nhk> Moving correction noise lowering system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796088A (en) * 1986-05-20 1989-01-03 Sanyo Electric Co., Ltd. Noise reducer using magnitude of noise and non-linear signal processing
JPH01128677A (en) * 1987-11-13 1989-05-22 Nippon Hoso Kyokai <Nhk> Motion correcting type contour correcting device

Also Published As

Publication number Publication date
JPH027553B2 (en) 1990-02-19

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