SEMICONDUCTOR MEMORY DEVICE
First Claim
1. A semiconductor memory device comprising a plurality of semiconductor memory chips in which data requested to be written by an information processing apparatus is written, the data having one or more pieces of first data in a predetermined unit,the device includes:
- a write controller configured to write the pieces of the first data in the predetermined unit and redundancy information into different semiconductor memory chips, the redundancy information being calculated by using a predetermined number of pieces of the first data and being used for correcting an error in the predetermined number of pieces of the first data; and
a storage unit configured to store therein identification information and region specifying information so as to be associated with each other, the identification information associating the predetermined number of pieces of the first data and the redundancy information, and the region specifying information specifying a plurality of storage regions in the semiconductor memory chips to which the pieces of the first data and the redundancy information associated with each other are written.
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Accused Products
Abstract
According to one embodiment, a semiconductor memory device includes semiconductor memory chips in which data requested to be written. The data has one or more pieces of first data in a predetermined unit. The device includes a write controller that writes the first data and redundancy information calculated by using a predetermined number of pieces of the first data and used for correcting an error in the predetermined number of pieces of the first data into different semiconductor memory chips; and a storage unit that stores identification information and region specifying information so as to be associated with each other. The identification information associates the first data and the redundancy information, and the region specifying information specifies a plurality of storage regions in the semiconductor memory chips to which the pieces of the first data and the redundancy information associated with each other are written.
29 Citations
13 Claims
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1. A semiconductor memory device comprising a plurality of semiconductor memory chips in which data requested to be written by an information processing apparatus is written, the data having one or more pieces of first data in a predetermined unit,
the device includes: -
a write controller configured to write the pieces of the first data in the predetermined unit and redundancy information into different semiconductor memory chips, the redundancy information being calculated by using a predetermined number of pieces of the first data and being used for correcting an error in the predetermined number of pieces of the first data; and a storage unit configured to store therein identification information and region specifying information so as to be associated with each other, the identification information associating the predetermined number of pieces of the first data and the redundancy information, and the region specifying information specifying a plurality of storage regions in the semiconductor memory chips to which the pieces of the first data and the redundancy information associated with each other are written. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification