JPS5266321A - Picture quality improving unit - Google Patents

Picture quality improving unit

Info

Publication number
JPS5266321A
JPS5266321A JP14322475A JP14322475A JPS5266321A JP S5266321 A JPS5266321 A JP S5266321A JP 14322475 A JP14322475 A JP 14322475A JP 14322475 A JP14322475 A JP 14322475A JP S5266321 A JPS5266321 A JP S5266321A
Authority
JP
Japan
Prior art keywords
picture quality
quality improving
improving unit
video signal
level
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
JP14322475A
Other languages
Japanese (ja)
Inventor
Himio Nakagawa
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.)
Hitachi Ltd
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 JP14322475A priority Critical patent/JPS5266321A/en
Publication of JPS5266321A publication Critical patent/JPS5266321A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: At the portion where the level of the video signal fluctuates, the delay time is varied according to level fluctuation, thereby removing the noise at the border line of the video signal and decreasing the unnatural of the picture quality.
COPYRIGHT: (C)1977,JPO&Japio
JP14322475A 1975-11-30 1975-11-30 Picture quality improving unit Pending JPS5266321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14322475A JPS5266321A (en) 1975-11-30 1975-11-30 Picture quality improving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14322475A JPS5266321A (en) 1975-11-30 1975-11-30 Picture quality improving unit

Publications (1)

Publication Number Publication Date
JPS5266321A true JPS5266321A (en) 1977-06-01

Family

ID=15333769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14322475A Pending JPS5266321A (en) 1975-11-30 1975-11-30 Picture quality improving unit

Country Status (1)

Country Link
JP (1) JPS5266321A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5397331A (en) * 1977-02-04 1978-08-25 Sony Corp Video signal process circuit
JPS5498117A (en) * 1978-01-20 1979-08-02 Hitachi Ltd Automatic picture quality control circuit
US5237625A (en) * 1990-04-24 1993-08-17 Matsushita Electric Industrial Co., Ltd. Image contour enhancing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5397331A (en) * 1977-02-04 1978-08-25 Sony Corp Video signal process circuit
JPS6217427B2 (en) * 1977-02-04 1987-04-17 Sony Corp
JPS5498117A (en) * 1978-01-20 1979-08-02 Hitachi Ltd Automatic picture quality control circuit
JPS6238903B2 (en) * 1978-01-20 1987-08-20 Hitachi Ltd
US5237625A (en) * 1990-04-24 1993-08-17 Matsushita Electric Industrial Co., Ltd. Image contour enhancing device

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