US 8,412,893 B2 · Data storage device and method for handling data read out from memory using a ping-pong buffer

Abstract

The invention provides a method for handling data read out from a memory. In one embodiment, a controller corresponding to the memory comprises a ping-pong buffer. First, a first sector read time period required by the memory to read and output a data sector to the ping-pong buffer is calculated. A second sector read time period required by a host to read a data sector from the ping-pong buffer is calculated. A page switch time period required by the memory to switch a target read page is obtained. A total sector number is determined according to the first sector read time period, the second sector read time period, and the page switch time period. When the memory outputs data to the ping-pong buffer, a first buffer and a second buffer of the ping-pong buffer are switched to receive the data output by the memory according to the total sector number.

Claims16

Dependent claims

A method for handling data read out from a memory, wherein a controller corresponding to the memory comprises a ping-pong buffer, the ping-pong buffer comprises a first buffer and a second buffer, the memory comprises a plurality of pages, and each of the pages stores a plurality of data sectors, comprising:

calculating a first sector read time period required by the memory to read and output a data sector to the ping-pong buffer;
calculating a second sector read time period required by a host to read a data sector from the ping-pong buffer;
obtaining a page switch time period required by the memory to switch a target read page from one page to another page of the memory;
determining a total sector number according to the first sector read time period, the second sector read time period, and the page switch time period;
and
when the memory outputs data to the ping-pong buffer, switching the first buffer and the second buffer of the ping-pong buffer to receive the data output by the memory according to the total sector number.

3 more elements

A data storage device, coupled to a host, comprising:

a memory, comprising a plurality of pages for data storage, wherein each of the pages stores a plurality of data sectors;
and
a controller, comprising a ping-pong buffer for storing data output by the memory, calculating a first sector read time period required by the memory to read output a data sector to the ping-pong buffer, calculating a second sector read time period required by the host to read the data sector from the ping-pong buffer, obtaining a page switch time period required by the memory to switch a target read page, and determining a total sector number according to the first sector read time period, the second sector read time period, and the page switch time period, and when the memory outputs data to the ping-pong buffer, switching a first buffer and a second buffer of the ping-pong buffer to receive the data output by the memory according to the total sector number.

Dependencies are inferred from the claim text.

Data storage device and method for handling data read out from memory using a ping-pong buffer

Life of this patent

Data storage device and method for handling data read out from memory using a ping-pong buffer

Life of this patent

Abstract

Claims16