JPS5483314A - Space frequency improving circuit for color signal - Google Patents

Space frequency improving circuit for color signal

Info

Publication number
JPS5483314A
JPS5483314A JP15134677A JP15134677A JPS5483314A JP S5483314 A JPS5483314 A JP S5483314A JP 15134677 A JP15134677 A JP 15134677A JP 15134677 A JP15134677 A JP 15134677A JP S5483314 A JPS5483314 A JP S5483314A
Authority
JP
Japan
Prior art keywords
signal
color difference
color
change
amplitude
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
JP15134677A
Other languages
Japanese (ja)
Other versions
JPS6050111B2 (en
Inventor
Takahisa Tsuchiya
Takafumi Okada
Yoshio Ishigaki
Shoji Omori
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP52151346A priority Critical patent/JPS6050111B2/en
Publication of JPS5483314A publication Critical patent/JPS5483314A/en
Publication of JPS6050111B2 publication Critical patent/JPS6050111B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To improve the space frequency of a color signal to prevent blotting of the color by superposing the high frequency signal of a luminance signal on the color signal in a TV image pickup device.
CONSTITUTION: Wide band luminance signal YW separated from video signal, color difference signal RN-YN for demodulated R and color difference signal BN-YN for B are entered respectively to terminals 1a, 1b and 1c, and the luminance signal and each color difference signal are supplied respectively to matrix circuit 2, so that primary signals R to B are formed. Correction signal SP to be superposed on color difference signals RN-YN and BN-YN is formed from luminance signal YW. Correction signal SP is high frequency signal YH of luminance signal YW with the amplitude corresponding aproximately to the ratio of the amount of change of amplitude of low frequency signal YN constituting luminance signal YW to the amount of change of the color difference signals at the time of change of amplitude; the amount of change of amplitude in each signal corresponds to the differential output of each signal and signal SP is obtained from the differential output.
COPYRIGHT: (C)1979,JPO&Japio
JP52151346A 1977-12-16 1977-12-16 Color signal spatial frequency characteristic improvement circuit Expired JPS6050111B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52151346A JPS6050111B2 (en) 1977-12-16 1977-12-16 Color signal spatial frequency characteristic improvement circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52151346A JPS6050111B2 (en) 1977-12-16 1977-12-16 Color signal spatial frequency characteristic improvement circuit

Publications (2)

Publication Number Publication Date
JPS5483314A true JPS5483314A (en) 1979-07-03
JPS6050111B2 JPS6050111B2 (en) 1985-11-06

Family

ID=15516551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52151346A Expired JPS6050111B2 (en) 1977-12-16 1977-12-16 Color signal spatial frequency characteristic improvement circuit

Country Status (1)

Country Link
JP (1) JPS6050111B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6340315U (en) * 1986-08-30 1988-03-16
JPH05305936A (en) * 1992-04-21 1993-11-19 Akashiya:Kk Writing implement storage case

Also Published As

Publication number Publication date
JPS6050111B2 (en) 1985-11-06

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