JPS5574274A - Adjuster for video quality - Google Patents

Adjuster for video quality

Info

Publication number
JPS5574274A
JPS5574274A JP14825478A JP14825478A JPS5574274A JP S5574274 A JPS5574274 A JP S5574274A JP 14825478 A JP14825478 A JP 14825478A JP 14825478 A JP14825478 A JP 14825478A JP S5574274 A JPS5574274 A JP S5574274A
Authority
JP
Japan
Prior art keywords
contrast
video quality
video
circuit
preshoot
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
JP14825478A
Other languages
Japanese (ja)
Inventor
Kenichi Tachibana
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14825478A priority Critical patent/JPS5574274A/en
Publication of JPS5574274A publication Critical patent/JPS5574274A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)

Abstract

PURPOSE: To improve the video quality to the adjustment toward maximum contrast, by adjusting the amplitude of preshoot and overshoot according to the contrast variable voltage, in the unit performing video quality adjustment through preshoot and overshoot.
CONSTITUTION: After the video signal detected at the video detection circuit 11 is made for the contrast adjustment at the contrast adjusting circuit 12, it is fed to the video qulaity circuit 13, where components are separated into low frequency and high frequency components, then they are again superimposed. The video quality control circuit 16 restricts the amplitude of the high frequency signal obtained at HPF15 through the use of the voltage taking maximum direction of contrast from the circuit 12. Further, since the video quality signal is obtained, in which the amplitude of preshoot and overshoot is restricted, sharp picture can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP14825478A 1978-11-30 1978-11-30 Adjuster for video quality Pending JPS5574274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14825478A JPS5574274A (en) 1978-11-30 1978-11-30 Adjuster for video quality

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14825478A JPS5574274A (en) 1978-11-30 1978-11-30 Adjuster for video quality

Publications (1)

Publication Number Publication Date
JPS5574274A true JPS5574274A (en) 1980-06-04

Family

ID=15448665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14825478A Pending JPS5574274A (en) 1978-11-30 1978-11-30 Adjuster for video quality

Country Status (1)

Country Link
JP (1) JPS5574274A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS573475A (en) * 1980-06-09 1982-01-08 Nec Home Electronics Ltd Picture quality adjusting circuit
JP2007104851A (en) * 2005-10-07 2007-04-19 Asmo Co Ltd Electric motor
JP2007151308A (en) * 2005-11-28 2007-06-14 Asmo Co Ltd Electric motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153796U (en) * 1974-06-04 1975-12-20
JPS5342496A (en) * 1976-09-30 1978-04-17 Yunichigaado Kk Automatic fire extinguisher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50153796U (en) * 1974-06-04 1975-12-20
JPS5342496A (en) * 1976-09-30 1978-04-17 Yunichigaado Kk Automatic fire extinguisher

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS573475A (en) * 1980-06-09 1982-01-08 Nec Home Electronics Ltd Picture quality adjusting circuit
JPS6339145B2 (en) * 1980-06-09 1988-08-03 Nippon Denki Hoomu Erekutoronikusu Kk
JP2007104851A (en) * 2005-10-07 2007-04-19 Asmo Co Ltd Electric motor
JP2007151308A (en) * 2005-11-28 2007-06-14 Asmo Co Ltd Electric motor

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