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    • 11. 发明授权
    • Colour television receiver
    • 彩色电视接收机
    • US3893174A
    • 1975-07-01
    • US37431173
    • 1973-06-28
    • TOKYO SHIBAURA ELECTRIC CO
    • SANO SHUNICHIKASAHARA KOICHIMURPHY JR HARRY CSTAUFFER HARRY C
    • H04N9/28H04N9/20C10G23/02
    • H04N9/28
    • In a colour television receiver wherein three electron beams respectively modulated by red, green and blue video signals are simultaneously deflected to display on a fluorescent screen a composite picture image of three colour picture images, there is provided a time axis converter for compressing, expanding or delaying with respect to time the image signal adapted to modulate at least one electron beam in one horizontal scanning period for different intervals so as to accurately superposing each other the multi-colour picture images over the entire surface of the fluorescent screen thus forming a multi-colour composite picture image free from any misalignment.
    • 在由红色,绿色和蓝色视频信号分别调制的三束电子束同时偏转以在荧光屏上显示三色彩色图像的复合图像的彩色电视接收机中,提供了一种时间轴转换器,用于压缩,扩展或 相对于时间延迟图像信号适于在一个水平扫描周期中对不同间隔调制至少一个电子束,以便在荧光屏的整个表面上彼此精确地叠加多色图像, 彩色复合图片图像没有任何错位。
    • 13. 发明授权
    • White-balance servicing circuit
    • 白平衡维修电路
    • US3598905A
    • 1971-08-10
    • US3598905D
    • 1970-02-25
    • PHILCO FORD CORP
    • KEPRTA BURAN I JRWALCZAK SYLVESTER JR
    • H04N9/20
    • H04N9/20
    • A switching circuit for alternatively conditioning a color television receiver to display images on the screen of its picture tube or to permit accurate adjustment of biases controlling the white balance of the image displayed by the picture tube. The circuit comprises a double-pole single-throw switch so interconnected with sources of operating voltages for the vertical deflection output tube, the video output tube, and the picture tube, that, when the switch is thrown to its ''''service'''' position, i.e. is opened, the receiver is conditioned simultaneously in three ways: (1) plate voltage is removed from the vertical deflection output tube of the receiver, thereby cutting off that tube and preventing vertical deflection of the cathode-ray beams on the picture tube; (2) a bias voltage sufficient to cut off the video output tube is applied to a grid thereof, thereby blocking transmission of the video signal to the picture tube; and (3) a reference black level bias voltage is applied to each of the three kinescope cathodes. When the receiver is so conditioned, the white balance of the image displayed by the picture tube can be accurately set by adjusting the biases supplied to the screen grids of the picture tube. When the double-pole single-throw switch is thrown to its ''''operate'''' position, i.e. is closed, normal operating voltages are restored to the receiver, thereby enabling it to reproduce color television pictures.