Signal output device and method for sending signals at multiple transfer rates while minimizing crosstalk effects
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 6, 2002
Grant Date -
Oct 18, 2001
app pub date -
Jan 31, 2001
filing date -
Feb 7, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The signal output device of the present invention comprises of a driver circuit and a controller. The signal sending method of the present invention sets any one of a plurality of the different sending rates. The method also includes setting a slew rate of the driver circuit to a standard value that is in accordance with the predetermined data transfer rate, thereby starting signal transmission. The next step involves determining whether or not a data transfer error occurrence rate is below a predetermined allowable threshold. Then, changes in the slew rate of the driver circuit are made if the data transfer error occurrence rate is determined to be over the allowable threshold. Next, a search for a slew rate value that can decrease the data transfer error occurrence rate below the allowable threshold or decrease the data transfer error occurrence rate is performed. The new slew rate value is set as a new standard value. Finally, the process ends by setting the new standard slew rate for the driver circuit if the slew rate value can decrease the data transfer error occurrence rate below the allowable threshold or decrease the data transfer error occurrence rate.
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