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US 11,693,993 B2Granted
Processor and memory system to selectively enable communication
AssigneeTexas Instruments Incorporated
InventorsVeeramanikandan Raju, Jonathan William Nafziger
Life of this patent
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Abstract
A system including a bus, a processor coupled to the bus, a non-volatile memory coupled to the bus, circuitry for providing a detected condition, and a secure controller. The secure controller is coupled to the circuitry for providing a detected condition and to selectively enable communication of information between the non-volatile memory and the bus in response to the detected condition.
Claims20
A method comprising:
- receiving, by a secure controller from a detector of a system, a detected condition, the condition indicative of a detected level of security of a network communicating with the system;
- receiving, at a bus from a non-volatile memory in the system, a request for an item of protected information, among a plurality of protected items of information stored in the non-volatile memory correlated with access rules also stored in the non-volatile memory, each access rule indicating whether a corresponding item of information is accessible for the detected condition;
- and
- selectively enabling communication of the requested item of protected information, by the secure controller between the non-volatile memory and the bus, as specified by a corresponding access rule for the detected condition indicative of the detected level of network security of the network communicating with the system.
1 more element
A system comprising:
- a bus;
- a processor coupled to the bus;
- circuitry configured to detect a condition associated with the system, the condition indicative of a detected level of security of a network communicating with the system;
- a non-volatile memory coupled to the bus and storing items of information and access rules correlated with the items of information, each access rule indicating whether a corresponding item of information is accessible for the detected condition;
- and
- a secure controller coupled to the circuitry and the non-volatile memory, wherein the secure controller is configured to selectively enable communication of a requested item of information, among stored items of information, between the non-volatile memory and the bus, as specified by a corresponding access rule for the detected condition indicative of the detected level of network security of the network communicating with the system.
3 more elements
Dependencies are inferred from the claim text.