FR1422716A - Circuit réglable d'écrêtage de signaux vidéo - Google Patents

Circuit réglable d'écrêtage de signaux vidéo

Info

Publication number
FR1422716A
FR1422716A FR3427A FR3427A FR1422716A FR 1422716 A FR1422716 A FR 1422716A FR 3427 A FR3427 A FR 3427A FR 3427 A FR3427 A FR 3427A FR 1422716 A FR1422716 A FR 1422716A
Authority
FR
France
Prior art keywords
video signal
clipping circuit
signal clipping
adjustable video
adjustable
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.)
Expired
Application number
FR3427A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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
Priority claimed from US775968A external-priority patent/US2975371A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to FR3427A priority Critical patent/FR1422716A/fr
Application granted granted Critical
Publication of FR1422716A publication Critical patent/FR1422716A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/02—Volume compression or expansion in amplifiers having discharge tubes
    • 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
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR3427A 1958-11-24 1965-01-27 Circuit réglable d'écrêtage de signaux vidéo Expired FR1422716A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR3427A FR1422716A (fr) 1958-11-24 1965-01-27 Circuit réglable d'écrêtage de signaux vidéo

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US775968A US2975371A (en) 1958-11-24 1958-11-24 Clipping level control circuit
US341274A US3339178A (en) 1958-11-24 1964-01-30 Video clipping circuit adjustable by digital feedback
FR3427A FR1422716A (fr) 1958-11-24 1965-01-27 Circuit réglable d'écrêtage de signaux vidéo

Publications (1)

Publication Number Publication Date
FR1422716A true FR1422716A (fr) 1965-12-24

Family

ID=27241881

Family Applications (1)

Application Number Title Priority Date Filing Date
FR3427A Expired FR1422716A (fr) 1958-11-24 1965-01-27 Circuit réglable d'écrêtage de signaux vidéo

Country Status (1)

Country Link
FR (1) FR1422716A (fr)

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