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1. 发明授权

US5502576A Method and apparatus for the transmission, storage, and retrieval of documents in an electronic domain 失效
标题翻译：用于在电子域中传输，存储和检索文档的方法和装置
公开(公告)号：US5502576A
公开(公告)日：1996-03-26
申请号：US933623
申请日：1992-08-24
申请人： Thomas E. Ramsay , James C. Elkins
发明人： Thomas E. Ramsay , James C. Elkins
IPC分类号： H04N1/04 , H04N1/195 , H04N1/32 , H04N1/40 , H04N1/00
CPC分类号： H04N1/19584 , H04N1/0402 , H04N1/195 , H04N1/19594 , H04N1/32 , H04N1/32358 , H04N2201/0414 , H04N2201/3287
摘要： A method and apparatus for high speed conversion of tangible source documents to electronic images, and subsequent transmission or storage and retrieval of images, utilizing hybrid signal processing. The system employs a higher bandwidth analog signal for image capture and lower effective bandwidth analog signal for transmission or storage and retrieval, with an intervening digital memory utilized to construct a bitmap of the image to facilitate various dissection and seaming schemes which optimize image content and processing time. The system is designed around a conventional bus structure, and the memory serves as a junction with conventional personal computers, networks, and peripheral devices. In a representative embodiment, a tangible image is captured using a camera producing an analog signal with conventional raster synchronization. The synchronization is stripped from the analog signal, which is digitized for 8-bit grayscale and multiplexed to the memory where the image exists as a bitmap that may be divided into segments. The content is read from the memory, converted to an analog signal, and control signals are added. The control signals include horizontal and vertical sync pulses and interval blanking, a pilot signal to maintain alignment between adjacent segments along seams and to compensate for time-based errors, and calibration pulses to permit instantaneous adjustment of the gray level for each line, ensure accurate image content, and permit display enhancement. The resultant analog signal is stored on a randomly accessible storage medium as one or more frames, transmitted and reassembled, or displayed on a conventional monitor.
摘要翻译：一种利用混合信号处理将有形源文件高速转换成电子图像以及随后的图像传输或存储和检索的方法和装置。该系统采用更高带宽的模拟信号进行图像采集和较低有效带宽模拟信号进行传输或存储和检索，采用中间数字存储器构建图像的位图，以促进各种解剖和接缝方案，优化图像内容和处理时间。该系统围绕传统的总线结构设计，并且该存储器用作与常规个人计算机，网络和外围设备的连接。在代表性的实施例中，使用产生具有常规光栅同步的模拟信号的相机捕获有形图像。从模拟信号中去除同步，该模拟信号被数字化为8位灰阶，并且复用到图像存在的存储器中，作为可以被划分成段的位图。内容从存储器读取，转换为模拟信号，并添加控制信号。控制信号包括水平和垂直同步脉冲和间隔消隐，导频信号，以保持沿着接缝的相邻段之间的对准并补偿基于时间的误差，以及校准脉冲以允许对每条线的灰度级进行即时调整，确保准确图像内容，并允许显示增强。所得到的模拟信号作为一个或多个帧存储在随机存取的存储介质上，被传输和重新组装或显示在传统的监视器上。

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