SYSTEM AND METHOD FOR HIBERNATION USING A DELTA GENERATOR ENGINE
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United States of America Patent
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Issued Date -
May 4, 2017
app pub date -
Oct 29, 2015
filing date -
Oct 29, 2015
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Abstract
Apparatus and method for hibernating part of a memory device are disclosed. A memory device may seek to reduce its power consumption by entering deep power down (DPD) mode. In DPD mode, power to a section of volatile memory in the memory device may be removed. To that end, the memory device stores in non-volatile memory all of the data stored in the section of volatile memory. The data stored in non-volatile memory is accessed upon exiting DPD mode. Upon subsequent entries into DPD mode, a differential, between the data stored in non-volatile memory and the data currently stored in the section of volatile memory subject to power removal, is generated and stored in non-volatile memory. Upon exit of the DPD mode, the data stored in non-volatile memory and the differential are used to recreate the data stored in volatile memory at entry into DPD mode.
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