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US 8,997,209 B2Granted
Memory device comprising a plurality of memory chips, authentication system and authentication method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsWon-Seok Lee, Young-Kug Moon
Life of this patent
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Abstract
A memory device includes a plurality of memory chips, including one or more memory chips that store authentication information, and a controller including a first register that stores information indicating a representative memory chip, from among the one or more memory chips that store the authentication information, that stores valid authentication information.
Claims17
A memory device, comprising:
- a plurality of memory chips included in the memory device, wherein at least one memory chip of the plurality of memory chips is configured to store authentication information and one or more of the plurality of memory chips is a memory chip that is not configured to store the authentication information, wherein the at least one memory chip that stores valid authentication information is designated as a representative memory chip;
- and
- a controller included in the memory device and comprising a first register configured to store information indicating the representative memory chip from among the one or more memory chips and a second register configured to store revoked authentication information,
- wherein the memory device is authenticated using the valid authentication information read from the representative memory chip.
1 more element
An authentication system, comprising:
- a host device, comprising:
- an authentication unit configured to store a revoked authentication information list;
- and
- a memory device, comprising:
- a plurality of memory chips included in the memory device, wherein at least one memory chip of the plurality of memory chips is configured to store authentication information and one or more of the plurality of memory chips is a memory chip that is not configured to store the authentication information, wherein the at least one memory chip that stores valid authentication information is designated as a representative memory chip;
- and
- a controller included in the memory device and comprising a first register configured to store information indicating the representative memory chip from among the one or more memory chips and a second register configured to store information indicating at least one memory chip from among the one or more memory chips that stores revoked authentication information,
- wherein the at least one memory chip that stores the revoked authentication information is indicated by the revoked authentication information list, and the memory device is authenticated using the valid authentication information read from the representative memory chip.
5 more elements
An authentication method of a memory device, comprising:
- loading information indicating a representative memory chip into a first register included in the memory device while the memory device is powered on, wherein the memory device comprises a plurality of memory chips included in the memory device, at least one of the plurality of the memory chips store authentication information, at least one of the plurality of memory chips does not store the authentication information, and the at least one of the plurality of memory chips that stores valid authentication information is designated as the representative memory chin;
- reading the authentication information stored in the representative memory chip indicated by the information stored in the first register, wherein a second register is configured to store revoked authentication information;
- and
- authenticating the memory device using the valid authentication information read from the representative memory chip.
1 more element
Dependencies are inferred from the claim text.