System and method of error correction of control data at a memory device

US8533558B2 · kind B2 · utility

Assignee

• Sandisk Technologies, Inc. · US

Inventors

• Damian Yurzola · Santa Clara, US
• Rajeev Nagabhirava · Santa Clara, US
• Arjun Kapoor · San Francisco, US
• Itai Dror · Omer, IL
• Annie C. Y. Chang · Palo Alto, US
• Peter Hwang · Newark, US
• Jian Chen · Yuchi, TW

Key dates

• Filing date: Nov 29, 2010
• Grant date: Sep 10, 2013
• Expiry date: Jul 2, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2212/403
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A method includes initiating a compression operation to compress data to be stored in a group of storage elements at a memory device that includes an error correction coding (ECC) engine. The method includes selecting one of a first mode of the ECC engine to generate a first number of parity bits and a second mode of the ECC engine to generate a second number of parity bits based on an extent of compression of the data. The method also includes encoding the compressed data to generate parity bits corresponding to the compressed data and storing the compressed data and the parity bits to the group of storage elements according to a page format that includes a data portion and a parity portion. The compressed data is stored in the data portion and at least some of the parity bits are stored in the parity portion.