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公开(公告)号：EP0447061A2
公开(公告)日：1991-09-18
申请号：EP91301568.1
申请日：1991-02-26
申请人： EEV LIMITED
CPC分类号： H04N5/238 , H01J29/98 , H01J31/50 , H01J2231/50063 , H01J2231/50094 , H04N5/2254 , H05G1/64
摘要： The high voltage power supply (2) of an image intensifier (3) is operated intermittently to minimise the effect on the intensified image of interference produced by the power supply (2), the input capacitance of the intensifier maintaining the high voltage at an acceptable level when the power supply (2) is not operating.
When used in conjunction with a video camera, the power supply (2) may be allowed to operate only during the frame synch and/or line synch periods. A shutter may inhibit operation of the image intensifier (3) whilst its power supply is operating.摘要翻译： 图像增强器（3）的高电压电源（2）间歇地操作以最小化对由电源（2）产生的干扰对增强的图像的影响，将增强器的输入电容保持在可接受的高电压 电源（2）不工作时的电平。 当与摄像机一起使用时，电源（2）可以仅允许在帧同步和/或线同步期间操作。 快门可以在其电源运行的同时禁止图像增强器（3）的操作。
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公开(公告)号：EP0379371A1
公开(公告)日：1990-07-25
申请号：EP90300530.4
申请日：1990-01-18
申请人： EEV LIMITED
IPC分类号： H04N3/14
CPC分类号： H04N5/37213
摘要： A CCD imaging array includes one or more shift registers. By injecting a charge packet at one end of the shift register, at times related to the start of line read out, then the charge packet reaches the other end of the shift register at the end of the line period. Thus the shift register can be used to generate line synchronisation signals. The technique can also be applied for more complex waveform generation and for field generation.
摘要翻译： CCD成像阵列包括一个或多个移位寄存器。 通过在移位寄存器的一端注入一个充电数据包，在与行读出的开始相关的时间，充电数据包在行周期结束时到达移位寄存器的另一端。 因此，移位寄存器可用于生成线路同步信号。 该技术还可用于更复杂的波形生成和现场生成。
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公开(公告)号：EP0519589A3
公开(公告)日：1993-12-01
申请号：EP92303610.7
申请日：1992-04-22
申请人： EEV LIMITED
CPC分类号： H04N5/3765 , H04N5/3577
摘要： In a pulse generating circuit each output pulse is produced in response to a counter counting a predetermined number of clock pulses. While the same number of pulses are counted each time, the intermediate count states used to produce consecutive output pulses are different. This reduces or eliminates coherent interference produced by the counter during counting which would otherwise give rise to visually intrusive banding (Fig. 1). When used to generate timing pulses for a video imager, the circuit produces a randomly or pseudo-randomly scattered interference pattern (Fig. 2). While the actual amount of interference is unchanged, the distributed pattern is subjectively less objectionable than the visually intrusive regular banded interference pattern produced by a conventional counter which always uses the same count sequence.
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公开(公告)号：EP0519589A2
公开(公告)日：1992-12-23
申请号：EP92303610.7
申请日：1992-04-22
申请人： EEV LIMITED
CPC分类号： H04N5/3765 , H04N5/3577
摘要： In a pulse generating circuit each output pulse is produced in response to a counter counting a predetermined number of clock pulses. While the same number of pulses are counted each time, the intermediate count states used to produce consecutive output pulses are different. This reduces or eliminates coherent interference produced by the counter during counting which would otherwise give rise to visually intrusive banding (Fig. 1).
When used to generate timing pulses for a video imager, the circuit produces a randomly or pseudo-randomly scattered interference pattern (Fig. 2). While the actual amount of interference is unchanged, the distributed pattern is subjectively less objectionable than the visually intrusive regular banded interference pattern produced by a conventional counter which always uses the same count sequence.摘要翻译： 在脉冲发生电路中，响应于计数预定数量的时钟脉冲的计数器产生每个输出脉冲。 虽然每次都对相同数量的脉冲进行计数，但是用于产生连续输出脉冲的中间计数状态是不同的。 这会减少或消除计数过程中计数器产生的相干干扰，否则会导致视觉侵入性条带（图1）。 当用于产生用于视频成像器的定时脉冲时，电路产生随机或伪随机散射的干涉图案（图2）。 虽然实际的干扰量不变，但是分布式模式主观上比总是使用相同计数序列的常规计数器产生的视觉侵入式常规带状干扰图形更不令人反感。
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公开(公告)号：EP0447061A3
公开(公告)日：1992-01-29
申请号：EP91301568.1
申请日：1991-02-26
申请人： EEV LIMITED
CPC分类号： H04N5/238 , H01J29/98 , H01J31/50 , H01J2231/50063 , H01J2231/50094 , H04N5/2254 , H05G1/64
摘要： The high voltage power supply (2) of an image intensifier (3) is operated intermittently to minimise the effect on the intensified image of interference produced by the power supply (2), the input capacitance of the intensifier maintaining the high voltage at an acceptable level when the power supply (2) is not operating. When used in conjunction with a video camera, the power supply (2) may be allowed to operate only during the frame synch and/or line synch periods. A shutter may inhibit operation of the image intensifier (3) whilst its power supply is operating.
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