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公开(公告)号：EP1216577B1
公开(公告)日：2003-11-12
申请号：EP00964257.0
申请日：2000-09-29
IPC分类号： H04N9/28
CPC分类号： H04N9/28
摘要： In a video display, correction data for a digital convergence arrangement are stored in a first non-volatile memory. During power turn on procedure, the correction data are read out of and stored in a volatile memory. During each deflection cycle, the data stored in the volatile memory are successively read out and applied to an auxiliary convergence winding. When a parity error is detected in the read out data, an output and/or an input of a convergence amplifier is actively disabled to prevent a disturbance of a screen of the cathode ray tube.
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2.发明授权ADAPTABLE RASTER DISTORTION CORRECTION SYSTEM FOR MULTIPLE HORIZONTAL SCANNING FREQUENCIES 有权可调器件失真GRID的进行多水平采样校正
公开(公告)号：EP1221257B1
公开(公告)日：2003-09-03
申请号：EP00966091.1
申请日：2000-09-29
CPC分类号： H04N3/2335 , H04N9/28
摘要： A memory and a switchable digital filter supply different numbers of digital distortion correction values. The supplied distortion correction values are converted to an analog distortion correction signal. A passive, analog low pass filter for the analog distortion correction signal generates an analog deflection signal. The low pass filter is optimized only for those of the analog deflection signals having a given sample rate. A controller varies the different numbers of the supplied distortion correction values to maintain the given sample rate of the analog deflection signal for different horizontal scanning rates. The controller selectively implements respective operating modes for different horizontal scanning frequencies in which no interpolated distortion correction values are supplied or different numbers of interpolated distortion correction values are supplied.
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公开(公告)号：EP1312223A1
公开(公告)日：2003-05-21
申请号：EP01962693.6
申请日：2001-05-30
IPC分类号： H04N9/28
CPC分类号： H04N9/28
摘要： A projection television set provided with a circuit for automatic convergence setting.For convergence setting, a projection television set contains photo sensors (S) for the primary colours R, G, B which supply an output signal (U1) in the event of impingement of a marker (M) contained in the projected picture.The photo sensors are connected in parallel to a single common evaluation circuit. The evaluation circuit is capable to determine which of several sensors has been illuminated.A method for automatic convergence setting is described taking into account that a plurality of photo sensors is connected in parallel to a single common evaluation circuit. In particular for a projection television set with convergence setting using a plurality of sensors.
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4.发明公开ADAPTABLE RASTER DISTORTION CORRECTION SYSTEM FOR MULTIPLE HORIZONTAL SCANNING FREQUENCIES 有权可调器件失真GRID的进行多水平采样校正
公开(公告)号：EP1221257A1
公开(公告)日：2002-07-10
申请号：EP00966091.1
申请日：2000-09-29
CPC分类号： H04N3/2335 , H04N9/28
摘要： A memory and a switchable digital filter supply different numbers of digital distortion correction values. The supplied distortion correction values are converted to an analog distortion correction signal. A passive, analog low pass filter for the analog distortion correction signal generates an analog deflection signal. The low pass filter is optimized only for those of the analog deflection signals having a given sample rate. A controller varies the different numbers of the supplied distortion correction values to maintain the given sample rate of the analog deflection signal for different horizontal scanning rates. The controller selectively implements respective operating modes for different horizontal scanning frequencies in which no interpolated distortion correction values are supplied or different numbers of interpolated distortion correction values are supplied.
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公开(公告)号：EP1216577A1
公开(公告)日：2002-06-26
申请号：EP00964257.0
申请日：2000-09-29
IPC分类号： H04N9/28
CPC分类号： H04N9/28
摘要： In a video display, correction data for a digital convergence arrangement are stored in a first non-volatile memory. During power turn on procedure, the correction data are read out of and stored in a volatile memory. During each deflection cycle, the data stored in the volatile memory are successively read out and applied to an auxiliary convergence winding. When a parity error is detected in the read out data, an output and/or an input of a convergence amplifier is actively disabled to prevent a disturbance of a screen of the cathode ray tube.
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公开(公告)号：EP1312223B1
公开(公告)日：2005-09-28
申请号：EP01962693.6
申请日：2001-05-30
IPC分类号： H04N9/28
CPC分类号： H04N9/28
摘要： A projection television set provided with a circuit for automatic convergence setting.For convergence setting, a projection television set contains photo sensors (S) for the primary colours R, G, B which supply an output signal (U1) in the event of impingement of a marker (M) contained in the projected picture.The photo sensors are connected in parallel to a single common evaluation circuit. The evaluation circuit is capable to determine which of several sensors has been illuminated.A method for automatic convergence setting is described taking into account that a plurality of photo sensors is connected in parallel to a single common evaluation circuit. In particular for a projection television set with convergence setting using a plurality of sensors.
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公开(公告)号：EP1250815B1
公开(公告)日：2003-05-14
申请号：EP00976050.5
申请日：2000-11-20
发明人： GLEIM, Günter , HEIZMANN, Friedrich
IPC分类号： H04N9/28
摘要： The invention relates to a projection television set, in particular a projection television set with convergence correction. In the projection television set according to the invention, the images of three monochromatic colour picture tubes (2, 3, 4) are influenced in such a way that these attain congruence whilst avoiding geometric distortion on a screen. This influencing is achieved by a convergence device (22) which applies corresponding convergence currents to convergence deflection coils (19) arranged on the picture tubes (2, 3, 4). The convergence correction is performed using correction values stored in a RAM-Memory. When the set is switched on, these data are copied from a non-volatile memory (33) into the RAM-memory. According to the invention, the control circuit examines the copied convergence data for errors in order to ensure that no erroneous convergence data are used for convergence correction.
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公开(公告)号：EP1250815A1
公开(公告)日：2002-10-23
申请号：EP00976050.5
申请日：2000-11-20
发明人： GLEIM, Günter , HEIZMANN, Friedrich
IPC分类号： H04N9/28
摘要： The invention relates to a projection television set, in particular a projection television set with convergence correction. In the projection television set according to the invention, the images of three monochromatic colour picture tubes (2, 3, 4) are influenced in such a way that these attain congruence whilst avoiding geometric distortion on a screen. This influencing is achieved by a convergence device (22) which applies corresponding convergence currents to convergence deflection coils (19) arranged on the picture tubes (2, 3, 4). The convergence correction is performed using correction values stored in a RAM-Memory. When the set is switched on, these data are copied from a non-volatile memory (33) into the RAM-memory. According to the invention, the control circuit examines the copied convergence data for errors in order to ensure that no erroneous convergence data are used for convergence correction.
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9.发明公开
公开(公告)号：EP1243128A1
公开(公告)日：2002-09-25
申请号：EP00991155.3
申请日：2000-12-09
摘要： A method for generating display correction waveforms for a CRT display comprises the steps of selecting one of a plurality of trace portions for forming part of a correction waveform, the trace portions having different average values. Completing each of the correction waveform by combining each selected trace portion with a respective retrace portion such that all completed correction waveforms have a predetermined average value. The correction waveforms may have vertical and/or horizontal rates.
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