Memory controller including a hardware compression and decompression engine for managing system memory and graphical operations
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United States of America Patent
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May 8, 2012
Grant Date -
May 14, 2009
app pub date -
Jan 14, 2009
filing date -
Nov 16, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An integrated memory controller (IMC) preferably sits on the main CPU bus or a high speed system peripheral bus and couples to system memory. The IMC may use a lossless data compression and decompression scheme for improved performance. The IMC may also include microcode for specific decompression of particular data formats such as digital video and digital audio. Compressed data may be decompressed in the IMC and stored into system memory or saved in the system memory in compressed format. Internal memory mapping may allow for formal definition spaces which may define the format of the data and the data type to be read or written. Software overrides may be placed in applications software in systems that desire to control data decompression at the software application level.
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