-
公开(公告)号：EP0201336A2
公开(公告)日：1986-11-12
申请号：EP86303497.1
申请日：1986-05-08
IPC分类号： H04N3/237
CPC分类号： H04N3/233
摘要： A combined top and bottom pincushion and gullwing distortion correction circuit uses a nonlinear reactor (T1) to introduce an appropriately modulated horizontal frequency (if) and second harmonic (i 2f ) of the horizontal frequency component into the vertical scanning current path. The nonlinear reactor (T1) is preferably a transformer with a secondary (W1, W2) that provides a correction voltage in series with the vertical scanning current path. The transformer effectively has two series opposing primary windings (W3, W4) magnetically coupled to the secondary (W1, W2). These primaries, energized by waves at the horizontal frequency and the second harmonic frequency, alternately predominate over each other to a variable degree, and in a manner determined by the vertical scanning current (i v ), for inducing corresponding voltage at the secondary winding (W1, W2). In a preferred embodiment the secondary winding is coupled to a first tuned circuit (L4, 64) that generates a horizontal rate north-south pincushion correction component voltage of the total correction voltage. The secondary winding is also coupled to a second tuned circuit (L3, C4) that generates a horizontal frequency second harmonic rate gullwing correction component voltage of the total correction voltage.
-
2.发明公开Digital vertical beam landing correction circuit 失效Digitalschaltung zur Vertikalkorrektur der Strahllandung。
公开(公告)号：EP0184356A2
公开(公告)日：1986-06-11
申请号：EP85308472.1
申请日：1985-11-21
CPC分类号： H04N3/2335
摘要： Vertical beam landing errors in color cathode ray tubes are corrected by a digital delay circuit (20) which provides horizontal scan line video pixel information at its proper location to produce a distortion corrected raster. Accurate correction is provided by sample interpolation techniques (31, 32, 37) that effectively form derived pixels that have an apparent location between scan-lines that corrects the scanning distortions. The location of the derived pixel relative to the video pixel samples can be determined by the selection (34, 35) of the interpolating coefficients. Such correction is preferably combined with a scan line offset technique (34, 30) providing a coarse correction.
摘要翻译： 彩色阴极射线管中的垂直光束着落误差由数字延迟电路（20）校正，数字延迟电路（20）在其适当的位置提供水平扫描线视频像素信息以产生失真校正的光栅。 通过样本插值技术（31,32,37）提供精确的校正，其有效地形成在校正扫描失真的扫描线之间具有明显位置的导出像素。 导出像素相对于视频像素样本的位置可以通过内插系数的选择（34,35）来确定。 这种校正优选地与提供粗略校正的扫描线偏移技术（34,30）组合。
-
公开(公告)号：EP1168826B1
公开(公告)日：2005-10-26
申请号：EP01401395.7
申请日：2001-05-29
申请人： Thomson Licensing
发明人： Wilber, James Albert
IPC分类号： H04N3/237
CPC分类号： H04N3/233
-
公开(公告)号：EP0657902A1
公开(公告)日：1995-06-14
申请号：EP94119423.5
申请日：1994-12-08
发明人： Tsutsumi, Yutaka , Konno, Isago , Ito, Takanobu
摘要： A horizontal linearity correction coil is used for a television receiver having a cathode ray tube of a wide deflection angle and has excellent productivity, quality and loading respectively. The ferrite magnetic core has the flanges (16, 17 and 18) at both ends and the middle and has a hollow shape at one winding core portion (19) of the ferrite magnetic core. The windings (22 and 23) are wound around the winding core portions (19 and 20) and the permanent magnets (24 and 25) are combined to both end flanges (16 and 18).
摘要翻译： 水平线性校正线圈用于具有宽偏转角的阴极射线管的电视接收机，分别具有优异的生产率，质量和负载。 铁氧体磁芯在两端和中部具有凸缘（16,17和18），并且在铁氧体磁芯的一个卷绕芯部（19）处具有中空形状。 绕组（22和23）缠绕在绕组芯部分（19和20）上，永磁体（24和25）组合到两个端部凸缘（16和18）。
-
公开(公告)号：EP0177585B1
公开(公告)日：1991-01-09
申请号：EP85901881.4
申请日：1985-04-04
CPC分类号： H04N3/237
摘要： The faceplate (18) of a square-planar picture tube (10) is relatively flat, with a curvature along the major axis and lines parallel thereto that is generally greater near the left and right edges than in the center. An LC tuned circuit (60), coupled to the deflection winding (LH), has a resonant period of oscillation approximately half that of the line trace interval. The tuned circuit (60) introduces an oscillatory correction component into the trace current that provides additional S-shaping in that portion of the line scan intermediate the center and the left or right edge.
-
公开(公告)号：EP0870399B1
公开(公告)日：2003-03-26
申请号：EP97936826.3
申请日：1997-09-08
CPC分类号： H04N3/233
摘要： A deflection circuit generates a deflection current (If) through a deflection coil (Lf). The deflection circuit comprises a series resistor (Rs) arranged in series with the deflection coil (Lf) to supply a feedback voltage (Vf; Vr), and a drive circuit (1, 5) which has an output coupled to the series arrangement of the deflection coil (Lf) and the series resistor (Rs). The drive circuit (1, 5) has an input coupled to the series resistor (Rs) to receive a feedback voltage (Vs). The drive circuit (1, 5) is further coupled to a conversion resistor (Rc) for receiving an input waveform (Vi). The drive circuit (1, 5) is arranged in a feedback loop to obtain a deflection current (If) with a shape resembling the input waveform (Vi). The deflection circuit further comprises a damping impedance (Rd) arranged in parallel with the deflection coil (Lf), and a current generating circuit (3) for generating a correction current (Ic) within the flyback period (Tf). The current generating circuit (3) is coupled to the conversion resistor (Rc) and/or the series resistor (Rs), and is activated during at least a last part of the flyback period (Tf). In this way the correction current (Ic) can easily be adapted with external components and does not suffer from tolerances in an integrated circuit.
-
公开(公告)号：EP0657902B1
公开(公告)日：1997-04-02
申请号：EP94119423.5
申请日：1994-12-08
发明人： Tsutsumi, Yutaka , Konno, Isago , Ito, Takanobu
-
-
-
公开(公告)号：EP0989742A4
公开(公告)日：2007-05-02
申请号：EP99917078
申请日：1999-04-21
申请人： SONY CORP
发明人： KIKUCHI KEN , WATANABE JUNZO , HONJI HIDETAKA
摘要： A horizontal deflection circuit which enables various kinds of correction. One end of a first parallel circuit having a first switching element (11), a first damper diode (12) and a first resonance capacitor (13) connected mutually in parallel is grounded, and the other end of the first parallel circuit is connected to one end of a second parallel circuit having a second switching element (21), a second damper diode (22) and a second resonance capacitor (23) connected mutually in parallel. The other end of the first parallel circuit is connected to a DC power supply terminal via a primary winding of a fly-back transformer (6). The other end of the second parallel circuit is grounded via a series circuit made up of a horizontal deflecting coil (4) and an S-distortion correction capacitor (5), and a connection nod between the horizontal deflecting coil (4) and the S-distortion correction capacitor (5) is grounded via a parallel circuit made up of an intermediate pin-cushion distortion correcting circuit (60) and a horizontal linearity correcting circuit (70). Switching element control means (40) for switching the first switching element (11) by a horizontal drive signal and for controlling off-start timing and off-period of the second switching element (21) is provided.
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.009 秒)
