FR2401568A1 - Dispositif de traitement de signal - Google Patents

Dispositif de traitement de signal

Info

Publication number
FR2401568A1
FR2401568A1 FR7821737A FR7821737A FR2401568A1 FR 2401568 A1 FR2401568 A1 FR 2401568A1 FR 7821737 A FR7821737 A FR 7821737A FR 7821737 A FR7821737 A FR 7821737A FR 2401568 A1 FR2401568 A1 FR 2401568A1
Authority
FR
France
Prior art keywords
signal processing
diaphragm
processing device
tube
vidicon tube
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.)
Withdrawn
Application number
FR7821737A
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.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine 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 Hazeltine Corp filed Critical Hazeltine Corp
Publication of FR2401568A1 publication Critical patent/FR2401568A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/001—Volume compression or expansion in amplifiers without controlling loop
    • 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
    • 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
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Television Signal Processing For Recording (AREA)
  • Facsimiles In General (AREA)
  • Feedback Control In General (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)

Abstract

L'invention concerne les circuits électroniques de traitement de signal. Un dispositif de traitement de signal 14 comprend des circuits qui sont associés à un tube vidicon 30 et à un diaphragme à position variable 34. Ces circuits règlent automatiquement la position du diaphragme pour que l'intensité de la lumière qui atteint le tube vidicon corresponde aux conditions de fonctionnement optimales de ce tube, et ils corrigent ensuite le signal de sortie du tube vidicon pour en faire disparaître les variations introduites par les variations de la position du diaphragme. Application aux systèmes de simulation pour arts graphiques.
FR7821737A 1977-07-25 1978-07-21 Dispositif de traitement de signal Withdrawn FR2401568A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/818,773 US4158859A (en) 1977-07-25 1977-07-25 Automatic control of iris and clamping voltage in video signal generator

Publications (1)

Publication Number Publication Date
FR2401568A1 true FR2401568A1 (fr) 1979-03-23

Family

ID=25226376

Family Applications (2)

Application Number Title Priority Date Filing Date
FR7821737A Withdrawn FR2401568A1 (fr) 1977-07-25 1978-07-21 Dispositif de traitement de signal
FR7906253A Granted FR2411433A1 (fr) 1977-07-25 1979-03-12 Dispositif de traitement de signal

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR7906253A Granted FR2411433A1 (fr) 1977-07-25 1979-03-12 Dispositif de traitement de signal

Country Status (12)

Country Link
US (1) US4158859A (fr)
JP (1) JPS5424101A (fr)
AU (2) AU517928B2 (fr)
CA (1) CA1127754A (fr)
CH (1) CH641918A5 (fr)
DE (1) DE2830725A1 (fr)
FR (2) FR2401568A1 (fr)
GB (3) GB1581818A (fr)
IT (1) IT1108774B (fr)
MX (1) MX145365A (fr)
NL (1) NL7807881A (fr)
SE (1) SE438762B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5923367A (en) * 1978-04-23 1999-07-13 Canon Kabushiki Kaisha Integral image recording and image playback system
US4263555A (en) * 1979-06-15 1981-04-21 Rca Corporation Signal detection system
US4300167A (en) * 1980-02-07 1981-11-10 Circon Corporation Automatic iris control system
JPS56158636A (en) * 1980-05-09 1981-12-07 Olympus Optical Co Photographing apparatus
US4320420A (en) * 1980-07-03 1982-03-16 Xerox Corporation Hybrid bit clock servo
JPS5717951A (en) * 1980-07-07 1982-01-29 Dainippon Printing Co Ltd Color original estimation method
AU551633B2 (en) * 1980-11-27 1986-05-08 Sony Corporation Signal level detecting circuit
US4468700A (en) * 1983-03-15 1984-08-28 Lectrolarm Custom Systems, Inc. Automatic iris control lens system
JP2501782B2 (ja) * 1983-09-16 1996-05-29 株式会社ニコン 画像走査装置
JPH0773335B2 (ja) * 1983-10-24 1995-08-02 株式会社ニコン 光電変換装置
US4581648A (en) * 1984-06-07 1986-04-08 Lenzar Optics Corporation Video camera system
US4599654A (en) * 1984-10-31 1986-07-08 Rca Corporation Dark current eliminator useful for auto-iris controller
US4694356A (en) * 1985-09-16 1987-09-15 Eastman Kodak Company Modification of color component video signals to compensate for decreasing white sensitivity of photographic element
US4682238A (en) * 1986-01-29 1987-07-21 The United States Of America As Represented By The United States Department Of Energy Energy-efficient lighting system for television
US5084772A (en) * 1986-10-31 1992-01-28 Fuji Photo Film Co., Ltd. Shading correcting method in image reading device
NL8800510A (nl) * 1988-02-29 1989-09-18 Philips Nv Schakeling voor het lineair versterken en demoduleren van een am-gemoduleerd signaal en geintegreerd halfgeleiderelement daarvoor.
GB2255465B (en) * 1991-04-30 1995-02-01 Sony Broadcast & Communication Image capture apparatus
DE19649797A1 (de) * 1996-12-02 1998-06-04 Hell Ag Linotype Verfahren zum Abgleich eines Abtastgerätes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863938A (en) * 1954-06-16 1958-12-09 Technicolor Motion Picture Printing timer
US3131253A (en) * 1959-05-18 1964-04-28 Budd Co Color reproduction systems
US3123666A (en) * 1959-11-23 1964-03-03 Boost
US3128333A (en) * 1960-01-12 1964-04-07 Hazeltine Research Inc Electronic previewer for color printing processes
GB1270264A (en) * 1968-09-18 1972-04-12 Marconi Co Ltd Improvements in or relating to telecine equipment
US3578908A (en) * 1968-12-05 1971-05-18 Cohu Electronics Inc Automatic peak video control system
US3590811A (en) * 1968-12-06 1971-07-06 American Optical Corp Electrocardiographic r-wave detector
US3800071A (en) * 1972-04-10 1974-03-26 Hazeltine Corp Graphic arts process simultation system
US3767853A (en) * 1972-09-21 1973-10-23 S Bendell Automatic iris control

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ELECTRONIQUE INDUSTRIELLE, no. 133, mai 1970 (PARIS, FR) BURKHART et al. "Appareils originaux pour la mesure des courants faibles", pages 276-282 *
IBM TECHNICAL DISCLOSURE BULLETIN, volume 19, no. 3, août 1976 (NEW YORK, US) M.M. SIVERLING et al. "Optical-scanner video circuit", pages 1049-1050 *
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, volume NS-12, no. 1, février 1965 (NEW YORK; US) G.A. GILMOUR et al. "A wide range logarithmic amplifier for NERVA", pages 346-350 *

Also Published As

Publication number Publication date
IT7868763A0 (it) 1978-07-24
FR2411433A1 (fr) 1979-07-06
GB1581817A (en) 1980-12-17
NL7807881A (nl) 1979-01-29
MX145365A (es) 1982-01-27
AU544640B2 (en) 1985-06-06
FR2411433B3 (fr) 1982-01-15
DE2830725A1 (de) 1979-02-15
SE7807736L (sv) 1979-01-26
CH641918A5 (de) 1984-03-15
JPS5424101A (en) 1979-02-23
GB1581818A (en) 1980-12-17
SE438762B (sv) 1985-04-29
AU517928B2 (en) 1981-09-03
IT1108774B (it) 1985-12-09
US4158859A (en) 1979-06-19
AU3680378A (en) 1979-12-06
AU7210081A (en) 1981-11-12
GB1581819A (en) 1980-12-17
CA1127754A (fr) 1982-07-13

Similar Documents

Publication Publication Date Title
FR2401568A1 (fr) Dispositif de traitement de signal
FR2423949A1 (fr) Dispositif de prise de vues radiographiques
JPS5389451A (en) Endoscope visual field direction changing attachment optical system
FR2395560A1 (fr) Systeme de controle et de surveillance
FR2387563A1 (fr) Procede et appareil acoustique pour compenser des defauts de l'ouie
FR2455189A1 (fr) Systeme de calcul et de reglage de l'optimalisation de l'avance a l'allumage
FR2388201A1 (fr)
JPS5328428A (en) Light control for electrophoto graphic copier
FR2455411A1 (fr) Dispositif de reglage perfectionne pour appareil de television en couleur
FR2433199A1 (fr) Appareil de commande electronique d'un moteur
JPS5391728A (en) Correction device for uneven intensity of illumination for variable multiplication copier
FR2428191A1 (fr) Dispositif destine a reduire les resonances provoquees par le courant dans un diffuseur
JPS5232323A (en) Front iris large aperture ratio lens
JPS57101471A (en) Read-in system
LU79603A1 (fr) Dispositif pour le reglage de la valeur des aberrations de chromatismo d'un systeme optique et procede comportant l'application d'un tel dispositif pour le reglage de cameras de television en couleur en utilisant un diascope
JPS56159622A (en) Flash controller for camera
JPS57128326A (en) Finder optical system
SE8306134D0 (sv) Process for producing photographic emulsions beeing free from cadmium ions
JPS5393834A (en) Exposure illuminance detector of copying machine
FR2392543A1 (fr) Ligne a retard a fibre optique
FR1116493A (fr) Dispositif destiné aux appareils de prises de vues cinématographiques ou photographiques, permettant de modifier la distance et, l'ouverture du diaphragme ou l'une desdeux pendant la visée
ATE42154T1 (de) Hybridkamera.
JPS5380227A (en) Photographic attachment lens
SU114564A1 (ru) Способ освещени глубоких объектов при фотографировании
JPS5394826A (en) Control device for input/output signal

Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
DI Inadmissibility of an action of restoration