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公开(公告)号：US4675679A
公开(公告)日：1987-06-23
申请号：US805384
申请日：1985-12-04
申请人： Kazuo Onozawa
发明人： Kazuo Onozawa
摘要： A digital scan converter comprises an A/D converter; an input buffer; a random access memory; a write address generator; a plurality of read address generators; an address switch circuit composed of a first address switch means for switching the addresses from the write address generator and the read address generators and delivering the addresses via an address signal line to the random access memory, and alternately switching a first address signal line for transmitting the address from the write address generator and a common signal line for commonly transmitting the addresses from the plurality of the read address generators for connecting one of said switched lines with the address signal line, and a second switch means for switching in succession the connection between the common signal line and a plurality of second signal lines respectively connected with the plurality of the read address generators for transmitting the addresses; a plurality of output buffer; an output switch circuit having a third switch means cooperating with the second switch means for switching the connection between the first data line for transmitting the digital data from the random access memory and the plurality of the second data lines for transmitting the digital data to the output buffers, the output switch circuit being adapted to receive the digital data from the random access memory and switch the connections from the output switch circuit to the plurality of the output buffers; and a plurality of D/A converters.
摘要翻译： 数字扫描转换器包括A / D转换器; 一个输入缓冲区; 随机存取存储器 写地址生成器; 多个读地址生成器; 地址切换电路，由第一地址切换装置构成，第一地址切换装置用于切换来自写入地址发生器和读取地址生成器的地址，并通过地址信号线将地址传送到随机存取存储器，并且交替地切换用于发送的第一地址信号线 来自写地址发生器的地址和用于从多个读地址发生器共同发送地址的公共信号线，用于将所述切换行中的一个与地址信号线相连，以及第二开关装置，用于连续地切换 分别与多个读地址生成器连接的公共信号线和多个第二信号线，用于发送地址; 多个输出缓冲器; 输出开关电路，具有与第二开关装置配合的第三开关装置，用于切换用于从随机存取存储器发送数字数据的第一数据线与用于将数字数据发送到输出端的多条第二数据线之间的连接 缓冲器，输出开关电路适于从随机存取存储器接收数字数据，并将连接从输出开关电路切换到多个输出缓冲器; 和多个D / A转换器。
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公开(公告)号：US4642801A
公开(公告)日：1987-02-10
申请号：US597861
申请日：1984-04-09
申请人： Didier Perny
发明人： Didier Perny
CPC分类号： G01S7/531 , G01S15/8902 , G01S7/6218
摘要： A visual display process of objects identified by a classification sonar consisting of modifying the visual display cathode ray tube scan laws in order to obtain a representation which is modified according to a perspective mode where the ratio of their height to their width is constant whatever their range, or to a normalized dimension mode where identical objects of the same orientation have the same representation whatever their range.
摘要翻译： 由分类声纳识别的物体的视觉显示过程，其包括修改视觉显示阴极射线管扫描定律，以便获得根据其高度与其宽度的比率恒定的透视模式进行修改的表示，无论其范围如何 或归一化尺度模式，其中相同取向的相同对象具有相同的表示，而不管其范围如何。
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公开(公告)号：US4449199A
公开(公告)日：1984-05-15
申请号：US206243
申请日：1980-11-12
申请人： Ronald E. Daigle
发明人： Ronald E. Daigle
IPC分类号： G01S7/539 , G01S7/298 , G01S7/531 , G06F3/153 , G06F13/00 , G09G5/39 , G09G5/393 , G09G5/395 , G11C7/00 , H04N7/01 , G06F15/20
摘要： Imaging information characterizable as a pixel grid or matrix of 256 image columns and 512 image rows is supplied by a scanning transducer means delivering a series of ray lines of information where each ray corresponds to an image column. The incoming pixels of the rays are converted into digitized data words, and stored for scan conversion by being routed, in simultaneous blocks of eight words, to a respective one of eight different page memories, in accordance with an image memory organization scheme assigning a different page routing number to each pixel of a block for the entire image matrix, to enable parallel memory access for both input and output operations. The first page for the first pixel of each incoming ray is determined by logic which subtracts the ray or column number from eight, modulo 8. Subsequent pages are generated by incrementing repetitively within the range 0, 1, 2 . . . for each subsequent incoming pixel, after being set to said first page number. Each page is associated with a corresponding element of an input buffer, to receive the corresponding pixel for each incoming column block. All elements of the full buffer are dumped in parallel to the eight page memories simultaneously. This occurs repetitively for all blocks of each ray/column until each pixel of a frame is stored at an individually separate page address determined by simple arithmetical logic. For output, the page memories are read out in rows, in simultaneous parallel row blocks of eight, one block element from each page, to an output buffer having an element connected to each page, with the page address for each pixel of a row block determined by a simple arithmetical operation. The output buffer elements are fed serially to a video display subsystem in an order determined by the page routing numbers of the rows of the image memory organization scheme. Simple circuitry determines the order of buffer element readout, with the first page/buffer element number being simply the number of the image row being read out, (Modulo 8), and subsequent page/buffer element numbers of that row being generated incrementing repetitively within the range 0, 7, 6 . . . 1, after being set to said row first page number. Such readout in successive rows of course effects conversion to a conventional video format for display.
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公开(公告)号：US4214269A
公开(公告)日：1980-07-22
申请号：US19321
申请日：1979-03-09
摘要： A digital scan converter is disclosed for processing the sequence of analog signals supplied by a sector scanning surveillance system to form a signal compatible with television type display devices. The signals supplied by the surveillance system are digitized by an analog-to-digital converter at a rate proportional to the cosine of the azimuthal scan angle that is associated with each analog signal to thereby effect a first portion of the required conversion from the polar coordinate format of the surveillance system to the Cartesian coordinate format of the television display. The digitized signals are stored in a memory so as to permit addressing of a set of stored data that corresponds to one horizontal trace of the television display. The data sets corresponding to successive horizontal lines of the television display are sequentially accessed in accordance with conventional television timing signals and data is serially read from memory and supplied to a digital-to-analog converter at a rate that completes the required polar-to-Cartesian format conversion.
摘要翻译： 公开了一种用于处理由扇区扫描监视系统提供的模拟信号序列以形成与电视型显示设备兼容的信号的数字扫描转换器。 由监视系统提供的信号由模拟数字转换器以与每个模拟信号相关联的方位扫描角度的余弦成正比的速率进行数字化，从而从极坐标执行所需转换的第一部分 监视系统的格式以电视显示的笛卡尔坐标格式。 数字化信号被存储在存储器中，以便允许寻址对应于电视显示器的一个水平轨迹的一组存储的数据。 根据传统的电视定时信号顺序地访问与电视显示器的连续水平行相对应的数据集，并且数据从存储器串行读取并以完成所需的极 - 数转换的速率提供给数模转换器， 笛卡尔格式转换。
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公开(公告)号：US4047147A
公开(公告)日：1977-09-06
申请号：US710969
申请日：1976-08-02
CPC分类号： G01S7/6218 , G01S15/89 , G01S7/531
摘要： Docking sonar uses first and second fan-shaped beams sequentially scanning a target zone in mutually perpendicular directions. Target returns from one beam scan are compared with target returns from the other beam scan and the results are placed into a storage medium such as a video disc and then displayed on a conventional TV monitor, with brightness of the target on the display being an indication of target range.
摘要翻译： 对接声纳使用第一和第二扇形光束在相互垂直的方向上顺序地扫描目标区域。 将来自一个波束扫描的目标返回与来自另一个波束扫描的目标返回进行比较，并将结果放置在诸如视频盘的存储介质中，然后显示在常规TV监视器上，显示器上的目标的亮度是指示 的目标范围。
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