JPS535909A - De-emphasis circuit - Google Patents

De-emphasis circuit

Info

Publication number
JPS535909A
JPS535909A JP8012476A JP8012476A JPS535909A JP S535909 A JPS535909 A JP S535909A JP 8012476 A JP8012476 A JP 8012476A JP 8012476 A JP8012476 A JP 8012476A JP S535909 A JPS535909 A JP S535909A
Authority
JP
Japan
Prior art keywords
emphasis circuit
emphasis
vtr
needless
oscillation
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
JP8012476A
Other languages
Japanese (ja)
Inventor
Jun Hirai
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 JP8012476A priority Critical patent/JPS535909A/en
Publication of JPS535909A publication Critical patent/JPS535909A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:In the emphasis of luminance signals on VTR, the needless oscillation is prevented by removing a feedback loop, thereby making a sufficient de-emphasis possible.
JP8012476A 1976-07-06 1976-07-06 De-emphasis circuit Pending JPS535909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8012476A JPS535909A (en) 1976-07-06 1976-07-06 De-emphasis circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8012476A JPS535909A (en) 1976-07-06 1976-07-06 De-emphasis circuit

Publications (1)

Publication Number Publication Date
JPS535909A true JPS535909A (en) 1978-01-19

Family

ID=13709449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8012476A Pending JPS535909A (en) 1976-07-06 1976-07-06 De-emphasis circuit

Country Status (1)

Country Link
JP (1) JPS535909A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717240A (en) * 1980-07-04 1982-01-28 Hitachi Ltd Dynamic deemphasis circuit
JPS5880990A (en) * 1981-11-09 1983-05-16 Matsushita Electric Ind Co Ltd How to record and play back color television signals
JPS5897992A (en) * 1981-12-07 1983-06-10 Hitachi Ltd Chroma signal regeneration device
JPS58156282A (en) * 1982-03-12 1983-09-17 Hitachi Ltd Color signal processing circuit of magnetic recording and reproducing device
JPS5914469U (en) * 1982-07-19 1984-01-28 ソニー株式会社 Color VTR
JPS5972605A (en) * 1982-10-20 1984-04-24 Toshiba Corp Noise cancelling device
JPS59138186A (en) * 1983-01-28 1984-08-08 Hitachi Ltd Emphasis and de-emphasis circuit of chroma signal
JPS6030296A (en) * 1983-07-29 1985-02-15 Victor Co Of Japan Ltd Recording and reproducing device of video signal
JPS61142894A (en) * 1985-10-18 1986-06-30 Hitachi Ltd Chrominance signal recording and reproducing circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717240A (en) * 1980-07-04 1982-01-28 Hitachi Ltd Dynamic deemphasis circuit
JPS5880990A (en) * 1981-11-09 1983-05-16 Matsushita Electric Ind Co Ltd How to record and play back color television signals
JPS5897992A (en) * 1981-12-07 1983-06-10 Hitachi Ltd Chroma signal regeneration device
JPS58156282A (en) * 1982-03-12 1983-09-17 Hitachi Ltd Color signal processing circuit of magnetic recording and reproducing device
JPS5914469U (en) * 1982-07-19 1984-01-28 ソニー株式会社 Color VTR
JPS5972605A (en) * 1982-10-20 1984-04-24 Toshiba Corp Noise cancelling device
JPS59138186A (en) * 1983-01-28 1984-08-08 Hitachi Ltd Emphasis and de-emphasis circuit of chroma signal
JPS6030296A (en) * 1983-07-29 1985-02-15 Victor Co Of Japan Ltd Recording and reproducing device of video signal
JPS61142894A (en) * 1985-10-18 1986-06-30 Hitachi Ltd Chrominance signal recording and reproducing circuit

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