FR1251286A - Clipping level control circuit - Google Patents

Clipping level control circuit

Info

Publication number
FR1251286A
FR1251286A FR810955A FR810955A FR1251286A FR 1251286 A FR1251286 A FR 1251286A FR 810955 A FR810955 A FR 810955A FR 810955 A FR810955 A FR 810955A FR 1251286 A FR1251286 A FR 1251286A
Authority
FR
France
Prior art keywords
control circuit
level control
clipping level
clipping
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.)
Expired
Application number
FR810955A
Other languages
French (fr)
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 FR810955A priority Critical patent/FR1251286A/en
Application granted granted Critical
Publication of FR1251286A publication Critical patent/FR1251286A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
FR810955A 1958-11-24 1959-11-23 Clipping level control circuit Expired FR1251286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR810955A FR1251286A (en) 1958-11-24 1959-11-23 Clipping level control circuit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US775968A US2975371A (en) 1958-11-24 1958-11-24 Clipping level control circuit
FR810955A FR1251286A (en) 1958-11-24 1959-11-23 Clipping level control circuit
US341274A US3339178A (en) 1958-11-24 1964-01-30 Video clipping circuit adjustable by digital feedback

Publications (1)

Publication Number Publication Date
FR1251286A true FR1251286A (en) 1961-01-20

Family

ID=27245352

Family Applications (1)

Application Number Title Priority Date Filing Date
FR810955A Expired FR1251286A (en) 1958-11-24 1959-11-23 Clipping level control circuit

Country Status (1)

Country Link
FR (1) FR1251286A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466153A1 (en) * 1979-09-21 1981-03-27 Thomson Csf Telecopier document analyser using photocell - compares each point of scanned line with variable threshold to determine whether it is black or white

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466153A1 (en) * 1979-09-21 1981-03-27 Thomson Csf Telecopier document analyser using photocell - compares each point of scanned line with variable threshold to determine whether it is black or white

Similar Documents

Publication Publication Date Title
FR1220993A (en) Magnetic control device
FR1290599A (en) Digital control device
FR1227542A (en) Magnetic control circuits
FR1242503A (en) Clipping level control unit
BE591289A (en) Control circuit.
FR1288576A (en) Control mechanism
FR1251286A (en) Clipping level control circuit
FR1284700A (en) Variable timing control
FR1304060A (en) Control gear
FR1098233A (en) Circuit breaker control
BE584828A (en) Control mechanism
FR1254297A (en) Advance control device
FR1310840A (en) Electro-dynamic control mechanism
FR1268778A (en) Rack control
FR1225564A (en) Control circuit
FR1263848A (en) Position control arrangements
FR1346457A (en) Flight time selector
FR1193043A (en) Magnetic control device
FR78479E (en) Scraper bucket control unit
FR1230002A (en) Time control circuit
FR1208233A (en) Thermostatic control
FR1148983A (en) Control circuits
FR1225649A (en) Gearbox control
FR1231932A (en) Control device
BE581335A (en) Control device