JPS57196684A - Frequency characteristic correcting device for transmission video signal - Google Patents

Frequency characteristic correcting device for transmission video signal

Info

Publication number
JPS57196684A
JPS57196684A JP56081536A JP8153681A JPS57196684A JP S57196684 A JPS57196684 A JP S57196684A JP 56081536 A JP56081536 A JP 56081536A JP 8153681 A JP8153681 A JP 8153681A JP S57196684 A JPS57196684 A JP S57196684A
Authority
JP
Japan
Prior art keywords
signal
circuit
video signal
frequency
frequency characteristic
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
JP56081536A
Other languages
Japanese (ja)
Other versions
JPH033995B2 (en
Inventor
Katsumi Ishii
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 JP56081536A priority Critical patent/JPS57196684A/en
Publication of JPS57196684A publication Critical patent/JPS57196684A/en
Publication of JPH033995B2 publication Critical patent/JPH033995B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)

Abstract

PURPOSE:To make the frequency characteristics constant, by providing a frequency characteristic correcting signal generating circuit at the reception side of a video signal and controlling this circuit so that the level of a color burst signal to be constant. CONSTITUTION:A composite color video signal is applied to a terminal 1. This signal is introduced to an output terminal 16 through an amplitude modulator 2, a coaxial cable 5, an AGC circuit 12, a demodulation circuit 13, and an amplifier 15. On the other hand, a signal of the circuit 13 is applied to a frequency characterisitc correction signal generating circuit 21, and the circuit 21 supplies a signal correcting the frequency characteristics into a flat characteristic to an addition circuit 14 in accordance with the frequency characteristics when the length of the cable 5 is a prescribed length. The output of the amplifier 15 is applied to a burst gate circuit 21, a color burst signal is obtained and this signal is applied to a frequency characteristic correcting signal generating circuit 20 to change the amount of correction.
JP56081536A 1981-05-28 1981-05-28 Frequency characteristic correcting device for transmission video signal Granted JPS57196684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081536A JPS57196684A (en) 1981-05-28 1981-05-28 Frequency characteristic correcting device for transmission video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081536A JPS57196684A (en) 1981-05-28 1981-05-28 Frequency characteristic correcting device for transmission video signal

Publications (2)

Publication Number Publication Date
JPS57196684A true JPS57196684A (en) 1982-12-02
JPH033995B2 JPH033995B2 (en) 1991-01-21

Family

ID=13749019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081536A Granted JPS57196684A (en) 1981-05-28 1981-05-28 Frequency characteristic correcting device for transmission video signal

Country Status (1)

Country Link
JP (1) JPS57196684A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555634A (en) * 1978-10-20 1980-04-23 Hitachi Denshi Ltd Frequency characteristic compensation method in coaxial cable transmission
JPS5582882U (en) * 1978-12-04 1980-06-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555634A (en) * 1978-10-20 1980-04-23 Hitachi Denshi Ltd Frequency characteristic compensation method in coaxial cable transmission
JPS5582882U (en) * 1978-12-04 1980-06-07

Also Published As

Publication number Publication date
JPH033995B2 (en) 1991-01-21

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