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公开(公告)号：US5179322A
公开(公告)日：1993-01-12
申请号：US783485
申请日：1991-10-28
Applicant: Terence K. Gibbs , Graham Luck
Inventor： Terence K. Gibbs , Graham Luck
Abstract: Linearity correction apparatus for a raster scanned cathode ray tube display device is presented. The apparatus comprises first means (16) for generating a correction signal to correct an asymmetric non linearity in a sawtooth electron beam line deflection current. The line deflection current is generated by a line timebase circuit for energising electromagnetic electron beam deflection coils of the cathode ray tube. The apparatus further comprises second means (70,90,91) cooperative with the first means (16) and responsive to a change in line timebase frequency for compensating a variation in the correction signal generated by the first means (16) in response to said change in line timebase frequency.
Abstract translation: 提出了一种用于光栅扫描阴极射线管显示装置的线性校正装置。 该装置包括用于产生校正信号以校正锯齿电子束线偏转电流中的非对称非线性的第一装置（16）。 线路偏转电流由线时基电路产生，用于激励阴极射线管的电磁电子束偏转线圈。 该装置还包括与第一装置（16）协作的第二装置（70,90,91），并响应于线路时基频率的变化，以响应于所述第一装置（16）产生的校正信号的变化来补偿由第一装置 改变时间基准频率。
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62.发明授权
公开(公告)号：US5168199A
公开(公告)日：1992-12-01
申请号：US744918
申请日：1991-08-14
Applicant: David C. Huffman , Joseph W. Goode, III
Inventor： David C. Huffman , Joseph W. Goode, III
CPC classification number: G09G1/04 , H04N3/2335 , H04N9/24
Abstract: An improved system for continuously detecting and correcting the display in a cathode ray tube for errors in size and linearity. The system employs a crystal oscillator as a reference frequency to determine absolute error which is represented as "size" on the display screen, and relative error which is represented as linearity. The error is determined from the index pulse feedback, which is an output of a phase lock loop voltage controlled oscillator which is compared to the reference frequency to provide an error voltage level. This output level is then digitized and processed in terms of general control, interpolation, extrapolation, filtering, etc., testing, and stored in digital memory. The digital error data is converted back to analog levels for insertion into a horizontal auxiliary amplifier circuit for linearity correction. A main horizontal amplifier circuit receives size correction. Size correction is taken from the linearity data as a single data point per raster line which forms a lower frequency correction for each raster line. Linearity error includes approximately 256 points per raster line which provides for generation of complex correction wave forms.
Abstract translation: 一种用于在阴极射线管中连续检测和校正显示尺寸和线性误差的改进系统。 该系统采用晶体振荡器作为参考频率，以确定在显示屏上表示为“大小”的绝对误差，以线性表示的相对误差。 该误差由索引脉冲反馈确定，该反馈脉冲反馈是与参考频率进行比较以提供误差电压电平的锁相环压控振荡器的输出。 然后，该输出电平在通用控制，插值，外插，滤波等测试中进行数字化处理，并存储在数字存储器中。 将数字误差数据转换回模拟电平，以插入水平辅助放大器电路进行线性校正。 主水平放大器电路接收尺寸校正。 从线性数据获取尺寸校正作为每个光栅线的单个数据点，其形成每个光栅线的较低频率校正。 线性误差包括每个光栅线大约256个点，用于产生复杂的校正波形。
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公开(公告)号：US5136398A
公开(公告)日：1992-08-04
申请号：US694328
申请日：1991-05-01
Applicant: Enrique Rodriguez-Cavazos , Gunter Gleim , Jacques Chauvin
Inventor： Enrique Rodriguez-Cavazos , Gunter Gleim , Jacques Chauvin
IPC: H04N11/20 , G09G1/04 , G09G1/28 , H04N3/26 , H04N3/27 , H04N5/44 , H04N7/01 , H04N7/015 , H04N9/28
CPC classification number: H04N9/28
Abstract: A television apparatus comprises a video display having a wide format display ratio, for example approximately 16:9. A deflection circuit generates first and second selectable rasters having a common horizontal scan width corresponding to the display but having first and second vertical heights respectively, for example nominal and overscanned vertical heights. A control circuit selects one of the first and second rasters for displaying pictures from wide format display ratio video sources and conventional format display ratio video sources respectively, for example 16:9 and 4:3. A picture from the wide format display ratio video source is substantially uncropped and a picture from the conventional format display ratio video source is expanded and cropped. One of the vertical formats provides substantially no image aspect ratio distortion of the pictures as displayed. The other one of the vertical formats provides substantially no cropping of the pictures as displayed. The relative amounts of image aspect ratio distortion and cropping of the pictures as displayed are substantially inversely proportional. One of the vertical formats provides substantially no image aspect ratio distortion and substantially no cropping of the active picture portion as displayed, when the video source is in letterbox format. A convergence control system can be provided which automatically adjusts to the selected vertical format.
Abstract translation: 电视设备包括具有宽格式显示比例的视频显示器，例如大约16:9。 偏转电路产生具有与显示器相对应的共同的水平扫描宽度的第一和第二可选择光栅，分别具有第一和第二垂直高度，例如标称和过扫描垂直高度。 控制电路分别从宽格式显示比视频源和常规格式显示比视频源分别选择第一和第二光栅中的一个用于显示图像，例如16：9和4：3。 来自宽格式显示比视频源的图像基本上未被裁剪，并且来自常规格式显示比视频源的图像被扩展和裁剪。 垂直格式之一基本上不显示图像的图像宽高比失真。 另一种垂直格式基本上不显示所显示的图片的裁剪。 显示的图像的图像宽高比失真和裁剪的相对量大体上成反比。 当视频源处于信箱格式时，垂直格式之一基本上不提供图像宽高比失真并且基本上不显示所显示的活动图像部分的裁剪。 可以提供会议控制系统，其自动地调整为所选择的垂直格式。
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公开(公告)号：US5115171A
公开(公告)日：1992-05-19
申请号：US722809
申请日：1991-06-28
Applicant: Peter E. Haferl
Inventor： Peter E. Haferl
Abstract: An East-West switching transistor is coupled between a flyback transformer primary winding and a horizontal deflection output transistor circuit to control retrace energy to obtain an East-West modulation of the deflection current amplitude as required for East-West pincushion raster correction. The East-West switching transistor isolates a retrace resonant circuit that includes a horizontal deflection winding from a flyback resonant circuit that includes the flyback transformer during a portion of retrace. The deflection winding is coupled to a common conductor to permit the use of a retrace voltage sample developed in the deflection winding as a feedback signal to synchronize the deflection current to the video signal. The arrangement reduces phase modulation of the deflection current as a function of beam current variations, that could be visible as a beam current dependent horizontal picture shift or a raster bending in a horizontal direction.
Abstract translation: 东西开关晶体管耦合在反激式变压器初级绕组和水平偏转输出晶体管电路之间，以控制回扫能量，以获得东西枕形光栅校正所需的偏转电流幅度的东西调制。 东西开关晶体管在回扫部分期间隔离包括回扫谐振电路的回扫谐振电路的回扫谐振电路，其包括反激式变压器。 偏转绕组耦合到公共导体，以允许使用在偏转绕组中产生的回扫电压样本作为反馈信号来使偏转电流与视频信号同步。 该布置减少了作为束电流变化的函数的偏转电流的相位调制，其可以作为依赖于电流的水平图像偏移或在水平方向上的光栅弯曲而可见。
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公开(公告)号：US5089947A
公开(公告)日：1992-02-18
申请号：US546209
申请日：1990-06-29
Applicant: Carleton D. Driscoll , Ronald S. Jungling , Elie M. Najm
Inventor： Carleton D. Driscoll , Ronald S. Jungling , Elie M. Najm
CPC classification number: H02M3/33507
Abstract: A full reset flyback regulator includes a power transformer having a primary winding and at least one secondary winding coupled to a load. A single control winding on a primary side of the power transformer is coupled through control circuitry to a gate electrode of a switching device that is connected to the primary winding. The voltage polarity on the control winding alternates so that if the switching device is "ON" a drive voltage is provided on its gate electrode and if the switching device is "OFF" a bias voltage is provided to the error amplifier control circuit. Each cycle of the regulator is initiated via a sync pulse which is provided from the high voltage flyback transformer of a display or monitor subsystem.
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Patent Agency Ranking
公开(公告)号：US5051668A
公开(公告)日：1991-09-24
申请号：US561738
申请日：1990-08-01
Applicant: Seiji Kawaberi , Junzo Watanabe , Hitoshi Suzuki
Inventor： Seiji Kawaberi , Junzo Watanabe , Hitoshi Suzuki
Abstract: A sine wave deflecting circuit has a simplified configuration capable of ensuring an efficient and stable operation with a function of facilitating external synchronization. The deflecting circuit comprises a resonant circuit comprising a deflecting coil and a resonant capacitor, and a circuit for detecting a signal waveform of the resonant circuit and driving the resonant circuit in accordance with the detection signal, wherein the deflecting coil is driven with sine waves generated by self-oscillation. A deflection interruption time is set during the driving action, and the sine-wave driving frequency is controlled by controlling the length of such interruption time.
Abstract translation: 正弦波偏转电路具有能够确保有效且稳定的操作的简化配置，具有促进外部同步的功能。 偏转电路包括包括偏转线圈和谐振电容器的谐振电路，以及用于检测谐振电路的信号波形并根据检测信号驱动谐振电路的电路，其中偏转线圈被产生的正弦波驱动 通过自振荡。 在驱动动作期间设定偏转中断时间，通过控制这种中断时间的长度来控制正弦波驱动频率。
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公开(公告)号：US5034667A
公开(公告)日：1991-07-23
申请号：US508448
申请日：1990-04-13
Applicant: Jeffery B. Lendaro
Inventor： Jeffery B. Lendaro
Abstract: An arrangement that compensates for a tendency in a raster width of a display screen of a video display or television to increase when a variation in a beam current occurs, decreases an amplitude of a deflection current to decrease in a nonlinear manner as a function of an increase in the beam current. At a low beam current, a given increase in the beam current produces a decrease in the amplitude of the deflection current that is substantially greater than caused by the same increase at a high beam current.
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公开(公告)号：US4991023A
公开(公告)日：1991-02-05
申请号：US355729
申请日：1989-05-22
Applicant: Gary H. Nicols
Inventor： Gary H. Nicols
CPC classification number: G09G1/167 , G09G2320/08
Abstract: A microprocessor controlled video montior is presented. The video monitor is able to automatically adjust the values of its parameters to adjust to operation on a number of different computer systems. The video monitor includes control lines, digital-to-analog converters and a control processor. The control processor, through the digital-to-analog converters, controls the values of the parameters of the video monitor. Stored in a non-volatile memory are entries which contain values of video monitor parameters. The control processor recognizes different computing systems on the basis of the frequency and polarity of horizontal and vertical synchronization signals. When either frequency or polarity of either the horizontal or vertical synchronization signals changes, the control processor will search the non-volatile memory for an entry in which values stored for both the frequency and polarity of both the horizontal and vertical synchronization signals matches the currently measured frequency and polarity of the horizontal and vertical synchonization signals. If a match is found the values for the parameters stored in the entry are applied by the control processor through the digital-to-analog converters to the control lines. A user may adjust certain parameters through the use of switches which are periodically polled by the control processor. When the control processor receives instructions from a user through manipulation of the switches the control processor makes the specified changes to the video monitor parameters and stores the new values in non-volatile memory.
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公开(公告)号：US4894719A
公开(公告)日：1990-01-16
申请号：US223551
申请日：1988-07-25
Applicant: Ik H. Moon
Inventor： Ik H. Moon
CPC classification number: H04N5/04
Abstract: A synchronizing signal automatic selecting circuit comprising a signal inverter for inverting synchronizing signal from a synchronizing signal separating circuit, a synchronizing signal detector for detecting synchronizing signal when a synchronizing signal is inputted to a horizontal and horizontal/vertical synchronizing signal input terminal and grounding the output signal of the signal inverter, a polarity detecting circuit for detecting the synchronizing signal polarity of the horizontal and horizontal/vertical synchronizing signal input terminal and a vertical synchronizing signal separator for separating the vertical synchronizing signal from the output signal of a transistor. The circuit is designed to automatically select with priority the synchronizing signal where the composite video signal and the synchronizing signal are inputted at the same time to a monitor used for a peripheral equipment of a computer without using a switch.
Abstract translation: 一种同步信号自动选择电路，包括用于反转来自同步信号分离电路的同步信号的信号反相器，同步信号检测器，用于当同步信号输入到水平和水平/垂直同步信号输入端时检测同步信号，并将输出接地 信号反相器的信号，用于检测水平和水平/垂直同步信号输入端子的同步信号极性的极性检测电路和用于从晶体管的输出信号分离垂直同步信号的垂直同步信号分离器。 该电路被设计为优先同步地将复合视频信号和同步信号同时输入到用于计算机的外围设备的监视器而不使用开关的同步信号。
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公开(公告)号：US4856920A
公开(公告)日：1989-08-15
申请号：US43551
申请日：1987-04-22
Applicant: Royden C. Sanders, Jr.
Inventor： Royden C. Sanders, Jr.
CPC classification number: G06K15/1238 , B41J25/006 , G06K15/028 , G06K15/10 , G06K2215/0082
Abstract: A unique Dot Scanning System is described which gives superior quality speed performance. One form of this dot scanning system is intra-dot and is applicable to both serial and line impact dot matrix printers, line and serial thermal printers, ink jet, as well as laser and LCD printers. In general, the speed of quality printing is more than doubled for given printhead performance. Another aspect of the invention involves inter-dot scanning as well as intra-dot recording and can be used in all the above applications. The scanning is preferably perpendicular to the printhead motion over the paper.
Abstract translation: 描述了独特的点扫描系统，其提供优异的速度性能。 这种点阵扫描系统的一种形式是点内，适用于串行和线路冲击点阵打印机，线阵列和串行热敏打印机，喷墨打印机以及激光和液晶打印机。 一般来说，给定的打印头性能，打印速度提高了一倍以上。 本发明的另一方面涉及点间扫描以及点内记录，并且可用于所有上述应用。 扫描优选垂直于纸上的打印头运动。
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