GB910021A - Improvements in electronic scanning systems - Google Patents

Improvements in electronic scanning systems

Info

Publication number
GB910021A
GB910021A GB3623558A GB3623558A GB910021A GB 910021 A GB910021 A GB 910021A GB 3623558 A GB3623558 A GB 3623558A GB 3623558 A GB3623558 A GB 3623558A GB 910021 A GB910021 A GB 910021A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
beam
beam current
mosaic
synchronized
image
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
GB3623558A
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.)
ELTRO GmbH
Original Assignee
ELTRO GmbH
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/228Circuit details for pick-up tubes
    • H04N5/2283Beam current control

Abstract

910,021. Cathode-ray tube operating circuits. ELTRO G.m.b.H. Nov. 11, 1958 [Feb. 20, 1958], No. 36235/58. Drawings to Specification. Class 40 (7). [Also in Groups XL (a) and XL (b)] In an electronic scanning system employing a pick-up tube of the kind utilizing the variation in resistivity with applied radiation of a mosaic of semi-conductor material, a rectangular-waveform generator is synchronized with a tube beam deflection signal generator so as to interrupt the beam current periodically in such a manner that following each scanning of any part of an image with the beam current uninterrupted, at least the next time that the deflection signal corresponds to that part of the image, the beam current is interrupted. Blurring of moving objects on reconstituted images, due to persistence of the effect of radiation on the mosaic, is thus avoided. The beam interruption may be synchronized with either line or frame deflection. Beam intensity during scanning may be controlled to vary inversely as the recurrence factor of the periods of uninterrupted beam current.
GB3623558A 1958-02-20 1958-11-11 Improvements in electronic scanning systems Expired GB910021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE0015394 1958-02-20

Publications (1)

Publication Number Publication Date
GB910021A true true GB910021A (en) 1962-11-07

Family

ID=7069025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3623558A Expired GB910021A (en) 1958-02-20 1958-11-11 Improvements in electronic scanning systems

Country Status (1)

Country Link
GB (1) GB910021A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087296A2 (en) * 1982-02-23 1983-08-31 Ampex Corporation Apparatus and method for generating high quality pictures under low light conditions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087296A2 (en) * 1982-02-23 1983-08-31 Ampex Corporation Apparatus and method for generating high quality pictures under low light conditions
EP0087296A3 (en) * 1982-02-23 1986-12-30 Ampex Corporation Apparatus and method for generating optimizing pictures under low light conditions

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