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Television receiver with two electron beams simultaneously scanning along respective verticaly spaced apart lines
Television receiver with two electron beams simultaneously scanning along respective verticaly spaced apart lines
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机译：具有两个电子束的电视接收机同时沿各自垂直隔开的线进行扫描
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摘要
A television receiver for providing a non-interlaced display of a received television signal intended for interlaced display includes a cathode ray tube having first and second cathodes, control grids and a fluorescent screen, a circuit for applying a first video signal to the first cathode such that the first cathode emanates a first electron beam in response to the first video signal, a circuit for applying a second video signal to the second cathode such that the second cathode emanates a second electron beam in response to the second video signal, a deflection device for horizontally and vertically deflecting the first and second electron beams from the first and second cathodes simultaneously and a deflection compensating device provided between the first and second cathodes and the fluorescent screen for making the second electron beam impinge upon the fluorescent screen between the lines scanned by the first electron beam such that the second electron beam forms a visual display with lines 1/2 line interval apart, in the vertical direction, from a visual display formed by the first electron beam. The first and second video signals fed to the first and second cathodes are the same in one embodiment. In other embodiments, the video signals fed to the two cathodes in one line may be the video signal for that one line and the average of the video signal for that one line and the video signal for the preceding or succeeding line, respectively.
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