公开(公告)号：US5068647A

公开(公告)日：1991-11-26

申请号：US331912

申请日：1989-04-03

申请人： Mark L. Hinton ,  John C. Belka, Jr.

发明人： Mark L. Hinton ,  John C. Belka, Jr.

IPC分类号： G09G1/08 ,  G09G1/16

CPC分类号： G09G1/16 ,  G09G1/08

摘要： A digital blanker for scanned displays is provided which turns off the electron beam on a Cathode Ray Tube whenever the beam is in a pre-defined area on the screen. A high speed analog to digital converter is utilized to digitize the position of either a raster or randomly scanned CRT beam. Once the beam position is digitized, the resulting number is used as an address to an EPROM. The data in the EPROM is coded to cause the CRT beam to be blanked if the beam is positioned in the predefined area where blanking is required.

摘要翻译： 提供用于扫描显示器的数字消隐器，每当光束在屏幕上的预定义区域中时，它将关闭阴极射线管上的电子束。 利用高速模数转换器对光栅或随机扫描的CRT光束的位置进行数字化。 一旦波束位置被数字化，结果的数字就被用作EPROM的地址。 EPROM中的数据被编码为使得如果光束被定位在需要消隐的预定区域中，则CRT光束被消隐。

公开(公告)号：US4882577A

公开(公告)日：1989-11-21

申请号：US277425

申请日：1988-11-25

申请人： Douglas M. DeVore

发明人： Douglas M. DeVore

IPC分类号： G09G1/08

CPC分类号： G09G1/08

摘要： A system is disclosed which allows two image signal sources with different update rates to timeshare a single calligraphic display monitor, such that the resulting image is a combination of the image data from both sources. The image signals from one source are monitored and analyzed by the system controller, which is adapted to locate temporal locations of the correct duration and frequency in the update cycle when the first source is not writing to the monitor. The controller controls the triggering of write signals by the second source to occur in the located temporal location in the write cycle of the first source. The controller also controls an analog switch for switching the image signals to the monitor during the times when the second image source is writing to the monitor. By controlling the timing of write signals from the second source, the two sources are maintained in the correct phase relationship with no overlap of write signals.

摘要翻译： 公开了一种系统，其允许具有不同更新速率的两个图像信号源对单个书法显示监视器进行分时，使得所得到的图像是来自两个源的图像数据的组合。 来自一个源的图像信号由系统控制器监测和分析，系统控制器适于在第一个源不向监视器写入时在更新周期中定位正确持续时间和频率的时间位置。 控制器控制由第二源触发写信号以在第一源的写周期中位于定位的时间位置。 控制器还控制模拟开关，用于在第二个图像源正在写入监视器的时间内将图像信号切换到监视器。 通过控制来自第二源的写入信号的定时，两个源保持在正确的相位关系，而不重叠写信号。

公开(公告)号：US4769636A

公开(公告)日：1988-09-06

申请号：US895848

申请日：1986-08-12

申请人： Hidefumi Iwami ,  Tomihiko Kojima ,  Shouji Nakamura ,  Fumiya Murata

发明人： Hidefumi Iwami ,  Tomihiko Kojima ,  Shouji Nakamura ,  Fumiya Murata

IPC分类号： G09G5/14 ,  G09G1/08

CPC分类号： G09G5/14

摘要： In a multi-window system for setting a plurality of windows on the screen for independent display in each window, a novel display control method is disclosed in which a visible region of a given window is determined from the positions and overlapped relations between the windows on the display screen, and display data is selectively applied to the visible region. The visible region is checked for crossing between an object window and another window making up a reference window on the screen, and if they cross each other, the object window is divided into subregions, while the subregion not overlapped with the reference window is regarded as a new object region, which is collated with another reference window and subdivided. This process of collation and division is repeated. A display output is thus applied sequentially to the subregions which are found to be a visible region.

摘要翻译： 在用于在每个窗口中设置用于独立显示的屏幕上的多个窗口的多窗口系统中，公开了一种新颖的显示控制方法，其中根据窗口上的位置和重叠关系来确定给定窗口的可见区域 显示屏幕和显示数据被选择性地应用于可见区域。 检查可视区域是否在对象窗口和构成屏幕上的参考窗口的另一窗口之间交叉，并且如果它们彼此交叉，则将对象窗口划分为子区域，而不与参考窗口重叠的子区域被视为 一个新的对象区域，它与另一个参考窗口进行整理并进行细分。 重复整理和分割的这个过程。 因此，显示输出被顺序地应用于被发现是可见区域的子区域。

公开(公告)号：US4713813A

公开(公告)日：1987-12-15

申请号：US878101

申请日：1986-06-25

申请人： Masayasu Sugimori ,  Mitsuhiro Morishita

发明人： Masayasu Sugimori ,  Mitsuhiro Morishita

IPC分类号： G06F11/22 ,  G01R13/28 ,  G01R31/3177 ,  G06F11/25 ,  G01R31/28 ,  G09G1/08

CPC分类号： G01R31/3177 ,  G06F11/25

摘要： A logic analyzer including at least a sampling system for sampling input data with a sampling clock signal comprises a condition decision circuit having inputs supplied with the input data and an internal clock signal for producing a conditioning signal in dependence on the input data in synchronism with the internal clock signal, a clock detection circuit for deciding whether the sampling clock signal makes appearance within a predetermined period of the internal clock signal to produce a signal representative of the result of the decision, and a control circuit having inputs supplied with the conditioning signal and the signal representative of said result for producing a trigger signal corresponding to the conditioning signal in dependence on the signal representative of the result of decision.

摘要翻译： 至少包括用于采样时钟信号对输入数据进行采样的采样系统的逻辑分析器包括条件判定电路，其具有输入的输入数据和内部时钟信号，用于根据输入数据同步产生调节信号 内部时钟信号，时钟检测电路，用于判定采样时钟信号是否在内部时钟信号的预定周期内出现，以产生表示该决定结果的信号;以及控制电路，其具有被提供有调节信号和 所述信号表示所述结果，用于根据表示决定结果的信号产生对应于调节信号的触发信号。

公开(公告)号：US4648113A

公开(公告)日：1987-03-03

申请号：US774781

申请日：1985-09-11

申请人： John J. Horn ,  Daniel G. Baker

发明人： John J. Horn ,  Daniel G. Baker

IPC分类号： H04N17/02 ,  G09G1/08 ,  H04N17/00 ,  H04N17/06 ,  H04S7/00 ,  H04R5/00

CPC分类号： H04S7/40

摘要： A visual indication of the relationship between first and second electrical signals, such as the left and right channel signals in a stereophonic audio system, is provided through use of a video vectorscope. The first and second signals are used to modulate the amplitude of two sinusoidal waves at a subcarrier frequency and in phase quadrature, so as to synthesize the chrominance portion of a composite video signal. The two modulated sine waves are additively combined, and the resulting signal is applied to the input terminal of the vectorscope.

摘要翻译： 通过使用视频矢量示波器提供第一和第二电信号之间的关系的视觉指示，例如立体声音频系统中的左和右声道信号。 第一和第二信号用于以副载波频率和相位正交来调制两个正弦波的振幅，以便合成复合视频信号的色度部分。 两个调制的正弦波被相加地组合，并且所得到的信号被施加到矢量示波器的输入端。

公开(公告)号：US4631532A

公开(公告)日：1986-12-23

申请号：US595810

申请日：1984-04-02

申请人： Steven P. Grothe

发明人： Steven P. Grothe

IPC分类号： G09G5/20 ,  G09G1/07 ,  G09G1/08 ,  G09G5/42 ,  G09G1/28

CPC分类号： G09G5/42 ,  G09G1/07 ,  G09G1/08

摘要： A color cathode ray tube has raster scan color zones defined by X and Y positional signals derived from a stroke vector generator and stored in a digital memory. Raster scan and stroke vector displays are alternately presented in a hybrid display. The display face of the tube is scanned by a plurality of raster lines and a color transition point is defined by the intersection of a stroke vector with a raster line. The X and Y addresses of the intersection points define the raster line, pixel element, and color at the transition point. The system is arranged so that the X and Y addresses are provided by the stroke vector generator in synchronous relation with the color transition points, and read into memory during the stroke vector refresh period. During the raster scan refresh period, the memory contents are recalled in synchronism with the raster scan, passed through a digital to analog converter, and then applied to the display tube to provide filled-in color zones superposed on the stroke vector display. The reduced memory requirements and controller access time permit dynamically rotating symbology in a synthetic display for aircraft flight instrumentation.

摘要翻译： 彩色阴极射线管具有由X和Y位置信号定义的光栅扫描色区，该位置信号从一个笔画矢量发生器导出并存储在数字存储器中。 栅格扫描和笔画矢量显示交替显示在混合显示中。 通过多条光栅线扫描管的显示面，并且通过笔画矢量与光栅线的交叉来定义颜色转变点。 交点的X和Y地址在过渡点定义光栅线，像素元素和颜色。 该系统被布置成使得X和Y地址由与颜色转换点同步的笔画向量生成器提供，并且在笔画向量刷新周期期间被读入存储器。 在光栅扫描刷新周期期间，与光栅扫描同步地调用存储器内容，通过数模转换器，然后施加到显示管，以提供叠加在笔画矢量显示上的填充色区。 减少的内存要求和控制器访问时间允许在用于飞行器飞行仪表的合成显示器中动态旋转符号系统。

公开(公告)号：US4510432A

公开(公告)日：1985-04-09

申请号：US464490

申请日：1983-02-07

申请人： Francois G. Desjardins

发明人： Francois G. Desjardins

IPC分类号： G09G1/08 ,  G06F3/13 ,  H03K13/02

CPC分类号： G09G1/08

摘要： A vector generator includes a linear charge pump in the form of a DAC with a constant but variable current output that can charge a capacitor connected between the output and one of the input terminals of an operational amplifier. A second constant current generator having an output current one-half that of the maximum output current of the DAC and of opposite polarity also is provided for charging the capacitor, the constant current generators being so connected to the capacitor that it can be charged either positively or negatively. A switching network controls whether the capacitor is charging or not depending on the state of the switching network. A second DAC with a constant but variable output voltage is provided and produces an output indicative of the coordinate of the vector to be drawn. The voltage on the capacitor is compared to the output voltage of the second DAC, and, when they are equal, a control signal is produced that changes the state of the switch to terminate charging of the capacitor.

摘要翻译： 矢量发生器包括具有恒定但可变电流输出的DAC形式的线性电荷泵，其可对连接在运算放大器的输出端和输入端之间的电容器进行充电。 提供具有DAC的最大输出电流的两倍的输出电流并且具有相反极性的第二恒定电流发生器用于对电容器充电，恒定电流发生器被连接到电容器，使其可以正向地被充电 或负面。 交换网络根据交换网络的状态来控制电容器是否正在充电。 提供具有恒定但可变输出电压的第二DAC，并产生指示要绘制的矢量的坐标的输出。 将电容器上的电压与第二DAC的输出电压进行比较，当它们相等时，产生改变开关状态以终止电容器充电的控制信号。

公开(公告)号：US4449124A

公开(公告)日：1984-05-15

申请号：US221221

申请日：1980-12-30

申请人： Albert D. Edgar

发明人： Albert D. Edgar

IPC分类号： G09G5/36 ,  G09G1/08 ,  G09G1/14

CPC分类号： G09G1/08

摘要： With a directed beam imaging system, a method is presented employing a low-pass filter in the positional signal path, a time-discrete positional signal, and precompensation of this time-discrete signal for phase and amplitude errors of the overall positional control circuitry. As a consequence of this method, the uncompensatable vector nonlinearities of the prior art vector stroke are obviated, the useable system bandwidth or stroke per unit time is extended beyond the prior art to the maximum driveable frequency, and in many text and graphics applications fewer strokes are needed to produce the desired image.

摘要翻译： 利用定向光束成像系统，提出了一种采用位置信号路径中的低通滤波器，时间离散位置信号和该时间离散信号的预补偿的方法，用于整个位置控制电路的相位和幅度误差。 作为这种方法的结果，消除了现有技术矢量笔画的不可补偿矢量非线性，每单位时间的可用系统带宽或笔画被扩展到现有技术到最大可驱动频率，并且在许多文本和图形应用中较少笔画 需要产生所需图像。

公开(公告)号：US4364036A

公开(公告)日：1982-12-14

申请号：US209488

申请日：1980-11-24

申请人： Kazunari Shimizu

发明人： Kazunari Shimizu

IPC分类号： G01R13/28 ,  G01R13/22 ,  G01R31/3177 ,  G06F11/25 ,  G09G1/08

CPC分类号： G01R13/22 ,  G01R31/3177 ,  G06F11/25

摘要： A combined logic timing and state analyzer comprises an internally clocked, timing analyzer section receiving a first set of logic signals, and an externally clocked, state analyzer section receiving a second set of logic signals. The timing analyzer section samples the first set of logic signals, as well as the external clock signal associated with the second set of logic signals, at a rate determined by the internal clock pulses and stores the samples in a first set of memories. The state analyzer section samples the second set of logic signals at a rate determined by the external clock pulses and stores the samples in a second set of memories. Data introduction into the memories terminates when they are triggered, as in the event of a malfunction of the system being investigated. The logic analyzer further includes a display circuit for repetitively reading out the first and the second sets of memories and for causing a display device to visually present the output data of the first memory set in the form of a timing diagram and the output data of the second memory set in the form of a state table. The time relationship between the two display formats can be readily ascertained since the timing diagram includes a waveform, or other visual representations, indicative of the external clock pulses used for sampling the second set of logic signals.

摘要翻译： 组合逻辑定时和状态分析器包括接收第一组逻辑信号的内部时钟定时分析器部分和接收第二组逻辑信号的外部时钟状态分析器部分。 定时分析器部分以由内部时钟脉冲确定的速率对第一组逻辑信号以及与第二组逻辑信号相关联的外部时钟信号进行采样，并将采样存储在第一组存储器中。 状态分析器部分以由外部时钟脉冲确定的速率对第二组逻辑信号进行采样，并将采样存储在第二组存储器中。 数据引入到存储器当它们被触发时终止，如在被调查的系统发生故障的情况下。 逻辑分析器还包括显示电路，用于重复地读出第一和第二组存储器，并且使得显示装置以时序图的形式可视地呈现第一存储器组的输出数据，并且输出数据 第二个内存以状态表的形式设置。 由于时序图包括指示用于对第二组逻辑信号进行采样的外部时钟脉冲的波形或其他视觉表示，所以可以容易地确定两种显示格式之间的时间关系。

公开(公告)号：US4251816A

公开(公告)日：1981-02-17

申请号：US972177

申请日：1978-12-21

申请人： Ricky L. Eppley

发明人： Ricky L. Eppley

IPC分类号： G09G1/08 ,  G09G5/08 ,  G06F3/14

CPC分类号： G09G5/08 ,  G09G1/08

摘要： A method and apparatus for plotting graphics or images such as arrows and grids, for example, on a display device such as a cathode ray tube (CRT) screen. The method includes generating a plotting string for the image to be displayed, with the plotting string including a repeat factor and a control factor for each segment of the image to be displayed, with the repeat factor containing the number of times a plotting character is to be repeated to produce the length of an associated segment in the image, and with the control factor containing x and y offsets for the associated segment. The method also includes utilizing the associated control factor to establish direction along x and y coordinates on the screen of the CRT for a segment in the image, and utilizing the associated repeat factor to determine the number of times the plotting character is to be repeated on the screen along a line established by the associated control factor to thereby produce the length of the associated segment. This process is repeated for each of the segments in the image.

摘要翻译： 用于在诸如阴极射线管（CRT）屏幕的显示装置上绘制诸如箭头和网格的图形或图像的方法和装置。 该方法包括为要显示的图像生成绘制字符串，其中绘制字符串包括要显示的图像的每个片段的重复因子和控制因子，重复因子包含绘制角色的次数 重复以产生图像中的相关段的长度，并且具有包含相关段的x和y偏移的控制因子。 该方法还包括利用相关联的控制因子来在CRT的屏幕上沿着图像中的段的x和y坐标建立方向，并且利用相关的重复因子来确定绘制人物将被重复的次数 沿着由相关联的控制因素建立的线的屏幕，从而产生相关段的长度。 对于图像中的每个片段重复该过程。