JPS56131275A - Color-picture-quality improving device of color television picture receiver - Google Patents

Color-picture-quality improving device of color television picture receiver

Info

Publication number
JPS56131275A
JPS56131275A JP3502280A JP3502280A JPS56131275A JP S56131275 A JPS56131275 A JP S56131275A JP 3502280 A JP3502280 A JP 3502280A JP 3502280 A JP3502280 A JP 3502280A JP S56131275 A JPS56131275 A JP S56131275A
Authority
JP
Japan
Prior art keywords
color difference
signal
color
difference signal
output
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
JP3502280A
Other languages
Japanese (ja)
Other versions
JPS6033358B2 (en
Inventor
Yoshio Yasumoto
Tetsuo Tomimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3502280A priority Critical patent/JPS6033358B2/en
Publication of JPS56131275A publication Critical patent/JPS56131275A/en
Publication of JPS6033358B2 publication Critical patent/JPS6033358B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/19—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in series, e.g. for voltage multiplication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To improve the resolution of a picture part by widening the band width of a color difference signal at the picture part, by positively mixing high frequency components of a luminance signal according to the magnitude of the color difference signal. CONSTITUTION:Luminance signal Y' from luminance signal source 12 and color difference signal C'-Y' from color difference signal source 11 are inputted to color resolution improving circuit 13, which applies corrected color difference signal C''- Y'' to adder 15. Luminance signal Y' passed through delay circuit 14 is applied to this adder 15, whose output is displayed on display device 16. This circuit 13 is provided with a circuit which extracts high frequency components of luminance signal Y' and further only the positive-directional output of the high frequency components, by making the output into a prescribed output, and by multiplaying it by the signal that corresponds to the input of color difference signal C'-Y' to output a corrected signal. Then, high frequency components of the luminance signal are positively mixed according to the magnitude of the color difference signal at a picture part to improve the resolution of the picture part.
JP3502280A 1980-03-18 1980-03-18 Color image quality improvement device for color television receivers Expired JPS6033358B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3502280A JPS6033358B2 (en) 1980-03-18 1980-03-18 Color image quality improvement device for color television receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3502280A JPS6033358B2 (en) 1980-03-18 1980-03-18 Color image quality improvement device for color television receivers

Publications (2)

Publication Number Publication Date
JPS56131275A true JPS56131275A (en) 1981-10-14
JPS6033358B2 JPS6033358B2 (en) 1985-08-02

Family

ID=12430428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3502280A Expired JPS6033358B2 (en) 1980-03-18 1980-03-18 Color image quality improvement device for color television receivers

Country Status (1)

Country Link
JP (1) JPS6033358B2 (en)

Also Published As

Publication number Publication date
JPS6033358B2 (en) 1985-08-02

Similar Documents

Publication Publication Date Title
ES477647A1 (en) Converter circuit and monochrome picture display device comprising such a converter circuit
JPS56131275A (en) Color-picture-quality improving device of color television picture receiver
JPS5620390A (en) Controlling circuit of television superimposition screen
JPS5324724A (en) Color television receiver
JPS53125724A (en) Color television receiver
JPS5690690A (en) Automatic regulator of color television receiver
JPS6416115A (en) Slew rate limiting filter
KR950034196A (en) Video signal mixing element
JPS5437522A (en) Camma correction circuit
JPS5679593A (en) Color television receiver
JPS57193172A (en) Pseudo color display device for picture signal
JPS57178488A (en) Luminance signal generator of color television system
JPS5579592A (en) Color television receiver
JPS5642485A (en) Improving device for picture quality of color television receiver
JPS5755680A (en) Television receiver
JPS51117869A (en) Cathode ray tube
JPS5460825A (en) Television picture receiver
JPS5230117A (en) Single tube frequency separation type color television camera
JPS53145522A (en) Beam index type color television picture receiver
JPS53101934A (en) Color television set of projection type
JPS5575387A (en) Chroma circuit
JPS56104595A (en) Flesh color level correcting circuit
KR940001695A (en) On-screen character height adjustment circuit
JPS5336425A (en) Color television picture receiver of beam index time
JPS54122032A (en) Television screen display unit