专利名称：Control device and method for reading a
data character from a computer at a fast
rate and transmitting the character at a slow
rate on a communication line
发明人：Gordon W. Hodge,Ted D. Nye
申请号：US05/835130
申请日：19770921
公开号：US04143418A
公开日：
19790306
专利内容由知识产权出版社提供
摘要：A data rate control device interfacing between a computer and a communication line facilitates reading out of data from the computer at a fast rate and then transmitting that data at a slow rate on the communication line with allowance being made between data transmissions for reflections and echoes on the line to die down. The control device includes a clock generator, control logic and a clock transmitter for sending out Fast Clocks and causing the serial reading in of data to a shift register of the control device. Once the presence of one character of data is detected in the register by the control logic, the Fast Clocks are terminated and Slow Clocks are sent to the register for serial reading out of the data character to a loop transmitter of the control device for transmission of the data character on the communication line. A counter in the control device monitors the generation of Slow Clocks so as to facilitate the operation of the control logic in changing back to Fast Clocks after transmission of the data character. Further, the counter will prevent the transmission of a successive character of data until there has been a lapse of sufficient time between data transmissions for reflections on
the line to die down.
申请人：SPERRY RAND CORPORATION
代理人：John P. Dority,William E. Cleaver,Marshall M. Truex 更多信息请下载全文后查看register for

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