GB2022379A - Focusing system for color TV camera - Google Patents

Focusing system for color TV camera

Info

Publication number
GB2022379A
GB2022379A GB7909693A GB7909693A GB2022379A GB 2022379 A GB2022379 A GB 2022379A GB 7909693 A GB7909693 A GB 7909693A GB 7909693 A GB7909693 A GB 7909693A GB 2022379 A GB2022379 A GB 2022379A
Authority
GB
United Kingdom
Prior art keywords
focus
vernier
focusing system
focus coil
pickup 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.)
Granted
Application number
GB7909693A
Other versions
GB2022379B (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.)
RCA Corp
Original Assignee
RCA 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 US05/970,805 external-priority patent/US4223253A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB2022379A publication Critical patent/GB2022379A/en
Application granted granted Critical
Publication of GB2022379B publication Critical patent/GB2022379B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • H04N23/13—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with multiple sensors

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)
  • Details Of Television Scanning (AREA)

Abstract

The focusing system for a multi-pickup tube color television camera includes a main focus coil 20, 21 and 23 and a vernier focus coil 30, 31 and 33 about each pickup tube 10, 11 and 13. The main focus coils are coupled in series to a common source 25 and the vernier focus coils are independently controllable, eg. by a respective digital control signal operative on an independent vernier focus current supply 40, 41 and 43. This avoids having to digitize voltages of the order of 1000 volts or having to use individual current shifts in the focus coil currents, and hence lead to registration errors. <IMAGE>
GB7909693A 1978-03-21 1979-03-20 Focusing system for colour tv camera Expired GB2022379B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1119778 1978-03-21
US05/970,805 US4223253A (en) 1978-03-21 1978-12-18 Focusing system for color TV camera

Publications (2)

Publication Number Publication Date
GB2022379A true GB2022379A (en) 1979-12-12
GB2022379B GB2022379B (en) 1982-05-12

Family

ID=26248132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909693A Expired GB2022379B (en) 1978-03-21 1979-03-20 Focusing system for colour tv camera

Country Status (4)

Country Link
JP (1) JPS5835435B2 (en)
DE (1) DE2911117C2 (en)
FR (1) FR2420892A1 (en)
GB (1) GB2022379B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131749A1 (en) * 1980-08-11 1982-03-11 Ampex Corp., 94063 Redwood City, Calif. ARRANGEMENT FOR MEASURING THE OPTIMAL FOCUSING CONDITION OF AN ELECTRON BEAM OF A RECEIVER'S EAR IN A TELEVISION CAMERA

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147379A (en) * 1981-03-05 1982-09-11 Sony Corp Focusing circut of multitube type image pickup device
JPS587991A (en) * 1981-07-08 1983-01-17 Sony Corp Registration adjusting circuit for multitube color camera

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994803A (en) * 1958-06-26 1961-08-01 Edgerton Germeshausen And Grie Focusing field correction apparatus
DE1134703B (en) * 1961-03-25 1962-08-16 Fernseh Gmbh Circuit for achieving grid coverage in color television cameras or playback systems with several cathode ray tubes
DE1161308B (en) * 1962-09-29 1964-01-16 Fernseh Gmbh Deflection device for cathode ray tubes
US3586902A (en) * 1968-07-30 1971-06-22 Fernseh Gmbh Vertical deflection arrangement in a color television system
US3564330A (en) * 1969-03-28 1971-02-16 Us Air Force Device for providing exposure control for a camera
JPS5126842B2 (en) * 1971-08-23 1976-08-09
JPS532527B2 (en) * 1973-07-30 1978-01-28
JPS5714469Y2 (en) * 1974-08-19 1982-03-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131749A1 (en) * 1980-08-11 1982-03-11 Ampex Corp., 94063 Redwood City, Calif. ARRANGEMENT FOR MEASURING THE OPTIMAL FOCUSING CONDITION OF AN ELECTRON BEAM OF A RECEIVER'S EAR IN A TELEVISION CAMERA

Also Published As

Publication number Publication date
DE2911117A1 (en) 1979-09-27
JPS5835435B2 (en) 1983-08-02
GB2022379B (en) 1982-05-12
DE2911117C2 (en) 1981-10-08
JPS54130827A (en) 1979-10-11
FR2420892A1 (en) 1979-10-19
FR2420892B1 (en) 1983-11-10

Similar Documents

Publication Publication Date Title
ATE158129T1 (en) MULTIPLE LENS IMAGE RECORDING DEVICE AND MISREGISTRATION CORRECTION
US2513221A (en) Register correction for television
US3705328A (en) Electronic zooming in video cameras by control of the deflection system
GB2022379A (en) Focusing system for color TV camera
GB2224883B (en) Electron gun for color picture tube having unipotential focusing lens
ATE79980T1 (en) IMAGE REPRESENTATION DEVICE WITH MEANS FOR COMPENSATION OF THE STREAMING FIELDS.
US3586902A (en) Vertical deflection arrangement in a color television system
JPS56131276A (en) Field-sequence color television image pickup system
US3931466A (en) Circuit arrangement for use in a television camera tube with an anti-comet tail electron gun
DK166241C (en) DEFINITION CIRCUIT TO CORRECT GIANT SCREENING IN A IMAGE PLANT WITH A SQUARE SHAPED PLANT IMAGE
ATE100987T1 (en) CIRCUIT ARRANGEMENT FOR CORRECTING GEOMETRY DISTORTION.
JPS55109081A (en) Television camera
DE3767922D1 (en) CIRCUIT ARRANGEMENT FOR ELIMINATING GEOMETRY DISTORTIONS.
JPS5720069A (en) Circuit for correcting television camera image pickup tube
US3619707A (en) Astigmatism correction for electron beam devices
JPS57106278A (en) Video camera
EP0274820B1 (en) Color imaging apparatus
SU1679649A1 (en) Imaging device
JPS60149261A (en) Correction method of shading data
JPS592426B2 (en) vertical deflection circuit
DK163629C (en) CIRCUIT DEVICE FOR VERTICAL DEFINITION OF ELECTRON RADIATIONS IN A TELEVISION VIEW SWITCH
GB765010A (en) Improvements in or relating to devices for producing colour television signals
JPS5669760A (en) Scanning electronic microscope
JPS57151161A (en) Focusing device of electron microscope
DE1295622B (en) Arrangement for the television-like reproduction of negative images

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee