SU125321A1 - A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method - Google Patents

A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method

Info

Publication number
SU125321A1
SU125321A1 SU598408A SU598408A SU125321A1 SU 125321 A1 SU125321 A1 SU 125321A1 SU 598408 A SU598408 A SU 598408A SU 598408 A SU598408 A SU 598408A SU 125321 A1 SU125321 A1 SU 125321A1
Authority
SU
USSR - Soviet Union
Prior art keywords
sweep
linearization
carrying
television receiver
voltage
Prior art date
Application number
SU598408A
Other languages
Russian (ru)
Inventor
Б.И. Раппопорт
Original Assignee
Б.И. Раппопорт
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 Б.И. Раппопорт filed Critical Б.И. Раппопорт
Priority to SU598408A priority Critical patent/SU125321A1/en
Application granted granted Critical
Publication of SU125321A1 publication Critical patent/SU125321A1/en

Links

Landscapes

  • Details Of Television Scanning (AREA)

Description

Существующие способы улучшени  линейности развертки приемных трубок сводитс  к получению на сетке выходного каскада напр жени  такой формы, чтобы в отклон юидих катушках ток измен лс  но линейному закону. Однако это напр жение недостаточно точно воспроизводит ту форму, котора  необходима дл  получени  пилообразного тока. Кроме того, в р де случаев идеально пилообразный ток не дает идеальной линейности на экране трубки.The existing methods of improving the linearity of the sweep of the receiving tubes are reduced to obtaining on the output grid a voltage of such a form that the current in the deflected coils changes but linearly. However, this voltage does not accurately reproduce the shape that is necessary to obtain a sawtooth current. In addition, in a number of cases, the ideal sawtooth current does not give perfect linearity on the screen of the tube.

Предлагаемый способ и устройство дл  осуществлени  его (см. чертеж) позвол ют получить напр жение, точно отражаюшее характер нелинейности пр мо на экране приемной трубки, которое, поступа  через цепи отрицательной обратной св зи на сетку выходного каскада развертки , измен ет отклонение луча на экране трубки, дела  отклонение линейным. На экране приемной трубки / образуетс  свет ша с  полоска (развертка осуществл етс  в одном направлении), котора  проецируетс  через объектив 2 на поверхность фотоэлемента с боковым фотоэффектом 3. Напр жение на выходе фотоэлемента мен етс  по линейному закону в зависимости от положени  светового п тна на поверхности фотоэлемента .The proposed method and device for carrying it out (see drawing) allows to obtain a voltage that accurately reflects the non-linearity character directly on the screen of the receiving tube, which, through negative feedback circuits to the output sweep grid, changes the beam deflection on the screen tube, case deviation linear. On the screen of the receiving tube /, a strip of light is formed (the sweep is performed in one direction), which is projected through the lens 2 onto the surface of the photocell with side photo effect 3. The voltage at the output of the photocell varies linearly depending on the position of the spotlight on photocell surface.

Если развертка приемной трубки нелинейна во времени, то на выходе фотоэлемента будет напр жение, точно отражающее характер этой нелинейности. Это напр жение усиливаетс  усилителем 4, сравниваетс  в блоке 5 с контрольным пилообразным напр жени)ем высокой Линейности , получаемым от генератора контрольной пилы 6, и полученна  разность из сравнивающего блока 5 подаетс  на усилитель 7. обратной св зи. Так как размах контрольного пилообразного напр жени  невелик , оно может быть сформировано высоко линейным.If the sweep of the receiving tube is nonlinear in time, then the output of the photocell will have a voltage that accurately reflects the nature of this nonlinearity. This voltage is amplified by the amplifier 4, compared in block 5 with a high linearity control sawtooth voltage received from the generator of the test saw 6, and the resulting difference from the comparison block 5 is fed to the feedback amplifier 7.. Since the span of the control sawtooth is small, it can be highly linear.

Разность контрольного пилообразного напр жени  высокой линейности и напр жени  с выхода фотоэлемента дает сигнал ошибки, отражающий характер нелинейности на экране трубки. Сигнал ошибки усиливаетс  у идителём- 7 обратной св зи и подаетс  на сетку выходного каскада генера.уора, 8 развертки и далее на отклон ющую систему 9, улучща  линейность отклонени .The difference between the control sawtooth voltage of high linearity and the voltage from the photocell output gives an error signal reflecting the nature of nonlinearity on the tube screen. The error signal is amplified by the feedback terminal 7 and is applied to the grid of the output stage, 8 sweeps and then to the deflection system 9, improving the linearity of the deflection.

Предмет изобретени Subject invention

Claims (2)

1.Способ повыщени  линеаризации развертки телевизионных приемных трубок, отличающийс  тем, что светлую полосу, образующуюс  на экране при работе развертки, проецируют на поверхность фотоэлемента с боковым фотоэффектом, выходное напр жение которого сравнивают с контрольным пилообразным нанр жением высокой линейности , а полученный разностный сигнал подают в обратной пол рности в генератор развертки.1. A method for increasing the linearization of the sweep of television receiver tubes, characterized in that the bright band formed on the screen during the sweep operation is projected onto the surface of the photocell with a side photo effect, the output voltage of which is compared with a control sawtooth high linearity, and the resulting difference signal is supplied in reverse polarity in the sweep generator. 2.Устройство дл  осуществлени  способа по п. I, отличающеес   тем, что оно выполнено из объектива, фотоэлемента с боковым фотоэффектом , усилител  выходного сигнала, сравнивающего устройства, генератора контрольного пилообразного напр жени  и усилител  обратной св зи.2. A device for carrying out the method according to claim I, characterized in that it is made of a lens, a photo cell with a side photo effect, an amplifier of the output signal comparing devices, a generator of a control sawtooth voltage and a feedback amplifier.
SU598408A 1958-04-26 1958-04-26 A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method SU125321A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU598408A SU125321A1 (en) 1958-04-26 1958-04-26 A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU598408A SU125321A1 (en) 1958-04-26 1958-04-26 A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method

Publications (1)

Publication Number Publication Date
SU125321A1 true SU125321A1 (en) 1959-11-30

Family

ID=48396684

Family Applications (1)

Application Number Title Priority Date Filing Date
SU598408A SU125321A1 (en) 1958-04-26 1958-04-26 A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method

Country Status (1)

Country Link
SU (1) SU125321A1 (en)

Similar Documents

Publication Publication Date Title
US2462263A (en) Reproduction of sound
US2604534A (en) Apparatus for controlling scanning accuracy of cathode-ray tubes
US2437323A (en) Apparatus for instantaneously indicating on an oscilloscope screen the absorption spectrum of a substance
US2563395A (en) Calibration
US3886331A (en) Electronic scanning spectrophotometer system
US2773413A (en) Apparatus for and method of measuring the quality of optical devices
SU125321A1 (en) A method for enhancing linearization of a television receiver tube sweep and apparatus for carrying out the method
US3358184A (en) Sweep linearization system for cathode ray tube-optical data scanner
US3225137A (en) Cathode-ray display system
GB1405953A (en) Dimension comparison
US2315621A (en) Electron camera
US2539971A (en) Oscillographic voltage measuring device
US2743379A (en) Sweep voltage systems
US2930898A (en) Cathode ray tube apparatus for the inspection of articles
US3887841A (en) High speed camera
US2905757A (en) Light correcting apparatus for electron pick-up tubes
US2582014A (en) Scanning device for television transmitters
US3517118A (en) Crt line-by-line tracker with automatically correcting beam deflection circuit
US2999184A (en) Control of photoemission
US2907888A (en) Function generator
SU1017928A1 (en) Device for registering investigated physical value maximum position (its versions)
SU139734A1 (en) The method of determining the nonlinearity of the scan of the beam on the screen of the cathode ray tube
SU397856A1 (en) DEVICE FOR THE CONTROL OF LAMPS, PRE-APPEARANCE FOR SINGLE-WAVE GAIN
US3539718A (en) Electronic type composing apparatus
SU465633A1 (en) Voltage dividing device