JPS5666977A - Picture gradation property conversion device - Google Patents

Picture gradation property conversion device

Info

Publication number
JPS5666977A
JPS5666977A JP14197579A JP14197579A JPS5666977A JP S5666977 A JPS5666977 A JP S5666977A JP 14197579 A JP14197579 A JP 14197579A JP 14197579 A JP14197579 A JP 14197579A JP S5666977 A JPS5666977 A JP S5666977A
Authority
JP
Japan
Prior art keywords
gradation property
picture signal
kinds
pcm
signal
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
JP14197579A
Other languages
Japanese (ja)
Other versions
JPS6339144B2 (en
Inventor
Nobuyoshi Ito
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting 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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP14197579A priority Critical patent/JPS5666977A/en
Publication of JPS5666977A publication Critical patent/JPS5666977A/en
Publication of JPS6339144B2 publication Critical patent/JPS6339144B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Image Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Circuits (AREA)

Abstract

PURPOSE:To convert to an optional gradation property, by executing simple processings such as PCM conversion, overlapped control and recomposition, etc., to the gradation property of a picture shown by an input picture signal. CONSTITUTION:An input picture signal is provided to the A-D converter 1, it is converted to a PCM picture signal of (n) bits, and also the input picture signal is provided to the conversion indicating pulse generator 8, as well. Said PCM picture signal is provided to the decoding demultiplexer 9, in which 2n kinds of level discrimination signals corresponding to the picture level of 2n stages contained in the PCM picture signal are generated. And said 2n kinds of level discrimination signals, and 2n kinds of process control signals which respectively have the value conforming with the desired gradation property generated by the process control part 10 are provided to the gradation property processor 4', and whenever 2n kinds of level discrimination signals are received, an analog signal of a new gradation property having the desired weight designated by the process control signal is output.
JP14197579A 1979-11-05 1979-11-05 Picture gradation property conversion device Granted JPS5666977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14197579A JPS5666977A (en) 1979-11-05 1979-11-05 Picture gradation property conversion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14197579A JPS5666977A (en) 1979-11-05 1979-11-05 Picture gradation property conversion device

Publications (2)

Publication Number Publication Date
JPS5666977A true JPS5666977A (en) 1981-06-05
JPS6339144B2 JPS6339144B2 (en) 1988-08-03

Family

ID=15304467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14197579A Granted JPS5666977A (en) 1979-11-05 1979-11-05 Picture gradation property conversion device

Country Status (1)

Country Link
JP (1) JPS5666977A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110368A (en) * 1984-06-26 1986-01-17 Matsushita Electric Ind Co Ltd Gamma correcting device of video signal
JPS61258567A (en) * 1985-05-13 1986-11-15 Hitachi Denshi Ltd Digital video signal processing system
JPS61258566A (en) * 1985-05-13 1986-11-15 Hitachi Denshi Ltd Video signal processing system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110368A (en) * 1984-06-26 1986-01-17 Matsushita Electric Ind Co Ltd Gamma correcting device of video signal
JPS61258567A (en) * 1985-05-13 1986-11-15 Hitachi Denshi Ltd Digital video signal processing system
JPS61258566A (en) * 1985-05-13 1986-11-15 Hitachi Denshi Ltd Video signal processing system

Also Published As

Publication number Publication date
JPS6339144B2 (en) 1988-08-03

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