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1. 发明授权

US5025483A System for scanning documents without loss of image data 失效
标题翻译：用于扫描文档而不丢失图像数据的系统
公开(公告)号：US5025483A
公开(公告)日：1991-06-18
申请号：US469967
申请日：1990-01-25
申请人： Raymond F. Dinan , Hugh C. Fallon , Jerald R. Malin , Robert R. Rodite , Clair F. Rohe , Gene D. Rohrer
发明人： Raymond F. Dinan , Hugh C. Fallon , Jerald R. Malin , Robert R. Rodite , Clair F. Rohe , Gene D. Rohrer
IPC分类号： G06F3/00 , H04N1/17
CPC分类号： H04N1/17 , G06F3/002
摘要： A document processing system directs documents at a high rate of speed past an optical scanner which captures written information on the documents as video image data. The video image data is directed over a data channel to a host computer system where the data is stored on a mass data storage device for subsequent retrieval. A buffer is provided between the scanner and the data channel, which receives data a rate which varies in relation to the amount of information present on the documents. Data is extracted from the buffer at a rate which is limited by the host computer's channel transfer rate. A control means is associated with the buffer and is operable for controlling a hierarchy of actions ranging from slowing down the incoming data stream to stopping the data stream altogether in order to prevent any loss of video image data due to overfilling of the buffer.
摘要翻译：文件处理系统以高速度通过光学扫描器来引导文档，其将文档上的书面信息作为视频图像数据捕获。视频图像数据通过数据信道被引导到主计算机系统，其中数据被存储在大容量数据存储设备上用于随后的检索。在扫描器和数据通道之间提供缓冲器，该缓冲器接收数据相对于文档上存在的信息量而变化的速率。以受主机通道传输速率限制的速率从缓冲器提取数据。控制装置与缓冲器相关联，并且可操作用于控制动作的层次结构，其范围从进入的数据流的减慢到完全停止数据流，以便防止由于缓冲器的过满而导致的视频图像数据的任何丢失。

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