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1.发明授权
公开(公告)号：US5185599A
公开(公告)日：1993-02-09
申请号：US555979
申请日：1990-07-23
摘要： A high performance graphics display system for use as an engineering workstation includes a compact method of generating vectors and transmitting addresses for same from a picture processor to frame buffer control circuitry for writing or reading pixel values along the vector in the frame buffer. The system uses a multiplexed address/data bus. Off-screen memory in communication with the picture processor is used to store pixel data read along vectors in the frame buffer preceding writing a vector so that the original data can be restored when the written vector is moved or removed. Vectors are encoded by the picture processor as a first word containing the address of the beginning point of the vector and major axis and X and Y direction bits to indicate the vector's direction. A second word includes a minor axis bit, indicating whether the next pixel to be written or read is on or off the major axis, in the direction indicated for such axis in the first word. The first word also includes a hesitate bit indicating whether the first pixel of a vector is to be written or read. The system is configured in pipe stages with a FIFO at each stage controlled by a hold signal that is pipelined from downstream stages in a direction opposite the pipelined data flow.
摘要翻译： 用作工程工作站的高性能图形显示系统包括一种紧凑的方法，用于产生矢量并将图像处理器的地址从图像处理器发送到帧缓冲器控制电路，用于沿着帧缓冲器中的向量写入或读取像素值。 系统使用复用的地址/数据总线。 与图像处理器通信的离屏存储器用于存储在写入向量之前沿着帧缓冲器中的向量读取的像素数据，使得当写入的向量被移动或移除时可以恢复原始数据。 向量由图像处理器编码为包含向量和长轴的起始点的地址的第一个字，以及指示向量方向的X和Y方向位。 第二个字包括一个短轴位，指示要写入或读取的下一个像素是否在长轴上或在第一个字中针对该轴指示的方向上。 第一个字还包括一个犹豫的位，指示矢量的第一个像素是要被写入还是读取。 该系统配置在管道阶段，每个阶段的FIFO由保持信号控制，保持信号从流水线数据流的相反方向从下游阶段流水线化。
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公开(公告)号：US5084830A
公开(公告)日：1992-01-28
申请号：US113045
申请日：1987-10-26
IPC分类号： G06T15/40
CPC分类号： G06T15/405
摘要： A memory device having a plurality of addressable memory locations, each of which can be defined uniquely by an address word having an X component and a Y component, which memory locations correspond respectively to grid points in a rectangular array at a pitch dX in the X direction and a pitch dY in the Y direction, is loaded with data values Q. In a first operating cycle, a first address word defining a memory location corresponding to a first grid point is generated. In a second cycle, a first value of Q as a function of X and Y is computed, and concurrently a second address word defining a memory location corresponding to a second grid point is generated. In a third cycle, the first value of Q is compared with a previous value of Q for the first grid point, and concurrently a third address word defining a memory location corresponding to a third grid point is generated and a second value of Q is computed. In a fourth cycle, the first value of Q is loaded into the memory location corresponding to the first grid point if that first value of Q bears a predetermined relationship to the previous value of Q.
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3.发明授权System and method for converting a non-interlaced video signal into an interlaced video signal 失效用于将非隔行扫描视频信号转换为隔行视频信号的系统和方法
公开(公告)号：US4386367A
公开(公告)日：1983-05-31
申请号：US277788
申请日：1981-06-26
CPC分类号： H04N7/0105
摘要： A system and method for receiving an input bit stream defining a non-interlaced video image and for producing concurrently an output bit stream defining an interlaced representation of such image. Intermediate storage of every other input raster line in a first-in/first-out oriented memory permits the output of the interlaced signal to be interleaved with the receipt of the non-interlaced input, and the interleaving of the input and output operations permits the use of a memory module having a capacity less than that required to store a complete raster line of input information. Provision is also made for synchronizing the output operation to U.S. or European standards.
摘要翻译： 一种用于接收定义非间行视频图像的输入比特流并同时产生定义这种图像的隔行扫描表示的输出比特流的系统和方法。 在先进先出的存储器中的每个其他输入光栅线的中间存储允许隔行信号的输出与非隔行输入的接收交错，并且输入和输出操作的交错允许 使用容量小于存储输入信息的完整光栅线所需容量的存储器模块。 还规定了输出操作与美国或欧洲标准的同步。
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公开(公告)号：US4157537A
公开(公告)日：1979-06-05
申请号：US677947
申请日：1976-04-19
申请人： Thomas B. Cheek , Douglas J. Doornink , Roger M. Handy , David E. Heinen , Joseph H. Hubert , Ronald J. Wilson
发明人： Thomas B. Cheek , Douglas J. Doornink , Roger M. Handy , David E. Heinen , Joseph H. Hubert , Ronald J. Wilson
摘要： A system wherein dynamic capability is incorporated into direct view storage tube terminals to provide both refreshed and stored information. More specifically, the system incorporates dynamic picture capability into direct view storage tubes by utilizing a constant rate vector generator, a high speed deflection system and a local digital memory operating simultaneously to enable refreshed and stored vectors to be simultaneously displayed.
摘要翻译： 一种系统，其中将动态能力并入到直视存储管终端中以提供刷新和存储的信息。 更具体地，该系统通过利用恒定速率矢量发生器，高速偏转系统和同时操作的本地数字存储器将动态图像能力并入到直视图存储管中，以使刷新和存储的矢量同时显示。
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公开(公告)号：US5452010A
公开(公告)日：1995-09-19
申请号：US276375
申请日：1994-07-18
申请人： Douglas J. Doornink
发明人： Douglas J. Doornink
CPC分类号： H04N5/073
摘要： A system for synchronizing asynchronous video signals with a reference signal for input to a digital video processing system has a first-in, first-out (FIFO) buffer for each input signal that writes the digitized video signal into the FIFO under control of an input clock signal derived from the digitized video signal, and reads the digitized video signal from the FIFO under control of the reference signal. An input state machine monitors the digitized video signal at the input and the occupancy of the FIFO to provide a write enable signal to the FIFO so long as the FIFO is not in danger of overflowing. An output state machine monitors the digitized video signal at the output and the occupancy of the FIFO to provide a read enable signal to the FIFO so long as the FIFO is not in danger of underflowing. When the FIFO is in danger of overflowing, the write enable signal is disabled during the blanking interval of the digitized video signal for a pre-determined number of pixels; and when the FIFO is in danger of underflowing, the read enable signal is disabled during the blanking interval of the digitized video signal for a pre-determined number of pixels.
摘要翻译： 用于将异步视频信号与用于输入到数字视频处理系统的参考信号同步的系统具有用于每个输入信号的先进先出（FIFO）缓冲器，其在数字视频信号的控制下将数字化视频信号写入FIFO 从数字化视频信号导出的时钟信号，并且在参考信号的控制下从FIFO读取数字化视频信号。 只要FIFO没有溢出的危险，输入状态机将监视FIFO的输入和占用时的数字化视频信号以向FIFO提供写使能信号。 输出状态机监视输出端的数字化视频信号和FIFO的占用，只要FIFO没有下溢的危险，就向FIFO提供读使能信号。 当FIFO处于溢出的危险时，在数字化视频信号的消隐间隔期间，对于预定数量的像素，写使能信号被禁止; 并且当FIFO处于下溢的危险时，在数字化视频信号的消隐间隔期间，对于预定数量的像素，读使能信号被禁止。
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6.发明授权Circuit and method for producing a full-screen cross-hair cursor on a raster-scan type display 失效用于在光栅扫描型显示器上生成全屏十字线光标的电路和方法
公开(公告)号：US4190834A
公开(公告)日：1980-02-26
申请号：US951703
申请日：1978-10-16
申请人： Douglas J. Doornink
发明人： Douglas J. Doornink
CPC分类号： G09G5/08
摘要： A circuit and method for receiving and sequentially decrementing the x and y coordinates of a desired cursor location so as to produce in a raster-scan display system a cross-hair cursor the component parts of which extend the full height and width of the display area.
摘要翻译： 一种用于接收并顺序地递减所需光标位置的x和y坐标的电路和方法，以便在光栅扫描显示系统中产生十字光标，其部分部分延伸显示区域的全部高度和宽度 。
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