METHOD TO REDUCE THE ENERGY COST OF NETWORK-ON-CHIP SYSTEMS
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United States of America Patent
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Issued Date -
Jul 5, 2012
app pub date -
Dec 14, 2011
filing date -
Dec 30, 2010
priority date (Note) -
Abandoned
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Abstract
In a network-on-chip (NoC) system, multiple data messages may be transferred among modules of the system. Power consumption due to the transfer of the messages may affect a cost and overall performance of the system. A described technique provides a way to reduce a volume of data transferred in the NoC system by exploiting redundancy of data messages. Thus, if a data message to be sent from a source in the NoC includes so-called “zero” bytes that are bytes including only bits set to “0,” such zero bytes may not be transmitted in the NoC. Information on whether each byte of the data message is a zero byte may be recorded in a storage such as a data structure. This information, together with non-zero bytes of the data message, may form a compressed version of the data message. The information may then be used to uncompress the compressed data message at a destination.
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