System and method for dynamic memory power management

Patent metadata

Field	Value
Publication number	US-9104413-B2
Application number	US-201213668865-A
Country	US
Kind code	B2
Filing date	Nov 5, 2012
Priority date	Nov 5, 2012
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

Various embodiments of methods and systems for hardware (“HW”) based dynamic memory management in a portable computing device (“PCD”) are disclosed. One exemplary method includes generating a lookup table (“LUT”) to track each memory page located across multiple portions of a volatile memory. The records in the LUT are updated to keep track of data locations. When the PCD enters a sleep state to conserve energy, the LUT may be queried to determine which specific memory pages in a first portion of volatile memory (e.g., an upper bank) contain data content and which pages in a second portion of volatile memory (e.g., a lower bank) are available for receipt of content. Based on the query, the location of the data in the memory pages of the upper bank is known and can be quickly migrated to memory pages in the lower bank which are identified for receipt of the data.

First claim

What is claimed is:

1. A method for hardware (“HW”) based dynamic memory management in a portable computing device (“PCD”), the method comprising:
generating a memory page lookup table (“LUT”) in a memory component, wherein the LUT includes a record for each of a plurality of memory pages located across multiple portions of a volatile memory;
updating the LUT such that each record indicates whether data content is stored in the memory page associated with the record, wherein up…

Assignees

• Qualcomm Inc

Inventors

• Lo Haw-Jing
• Taha Ali
• Chun Dexter T

Classifications

• G06F12/023

  Physics · mapped topic

• Y02B60/1228

  Cross-Sectional Technologies · mapped topic

• G06F1/3225 Primary

  Physics · mapped topic

• Y02B60/32

  Cross-Sectional Technologies · mapped topic

• G06F1/3275

  Physics · mapped topic