JPS5668064A - Transmission circuit of direct current component - Google Patents

Transmission circuit of direct current component

Info

Publication number
JPS5668064A
JPS5668064A JP14405079A JP14405079A JPS5668064A JP S5668064 A JPS5668064 A JP S5668064A JP 14405079 A JP14405079 A JP 14405079A JP 14405079 A JP14405079 A JP 14405079A JP S5668064 A JPS5668064 A JP S5668064A
Authority
JP
Japan
Prior art keywords
pulse
level
video signal
additional pulse
processing circuit
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
JP14405079A
Other languages
Japanese (ja)
Other versions
JPS6316949B2 (en
Inventor
Takafumi Okada
Yutaka Tanaka
Atsushi Matsuzaki
Mitsuo Kawamata
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 JP14405079A priority Critical patent/JPS5668064A/en
Publication of JPS5668064A publication Critical patent/JPS5668064A/en
Publication of JPS6316949B2 publication Critical patent/JPS6316949B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/185—Maintaining dc voltage constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To make it possible to raise the transmission rate of DC components of the video signal to an arbitrary value, by supplying the clamp pulse, which is positioned in the section where an additional pulse level is added to the pedestal level of the output signal of the signal processing circuit, to the clamping circuit. CONSTITUTION:Signal processing circuit 30 adds an additional pulse, which has the level proportional to the average value of the video signal and to polarity in the black level direction, to a prescribed position in the horizontal blanking section of the video signal. The clamp pulse positioned in the section where the additional pulse is added to the pedestal level of the output signal of signal processing circuit 30 is supplied to clamping circuit 4. Switch 16 is controlled by the clamp pulse from input terminal 18. In this case, the additional pulse and the clamp pulse have the same position and time width to, and their periods are horizontal period th, and th- t0 is expressed by t1. When the video signal is denoted as f(t), the transmission rate or DC components can be raised to an arbitrary value (1 or more or less) if level alpha of the additional pulse is selected as shown by the right expression. In the expression, R1 and R2 are resistance values.
JP14405079A 1979-11-06 1979-11-06 Transmission circuit of direct current component Granted JPS5668064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14405079A JPS5668064A (en) 1979-11-06 1979-11-06 Transmission circuit of direct current component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14405079A JPS5668064A (en) 1979-11-06 1979-11-06 Transmission circuit of direct current component

Publications (2)

Publication Number Publication Date
JPS5668064A true JPS5668064A (en) 1981-06-08
JPS6316949B2 JPS6316949B2 (en) 1988-04-12

Family

ID=15353147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14405079A Granted JPS5668064A (en) 1979-11-06 1979-11-06 Transmission circuit of direct current component

Country Status (1)

Country Link
JP (1) JPS5668064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239370U (en) * 1985-08-29 1987-03-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239370U (en) * 1985-08-29 1987-03-09

Also Published As

Publication number Publication date
JPS6316949B2 (en) 1988-04-12

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