Patent ID: 11948654
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. An artificial reality system comprising:
a head mounted display (HMD) configured to output artificial reality content, the HMD including at least one system on a chip (SoC), wherein the at least one SoC comprises:
a first subsystem comprising a first memory;
a second subsystem comprising a second memory; and
an always-on subsystem, the always-on subsystem comprising processing circuitry configured to:
in response to a first activation event, signal the first subsystem to initiate repair operations on the first memory, and
in response to a second activation event occurring after the first event, signal the second subsystem to initiate repair operations on the second memory,

wherein at least one of:
the always-on subsystem further comprises a System Test and Repair (STAR) memory system (SMS) server configured to retrieve, in response to activation of the first subsystem, a repair signature for the first memory and transmit the repair signature to a SMS sub-server of the first subsystem, wherein the SMS sub-server initiates repair operations for the first memory; or
the first memory comprises a subsystem energy processing unit (SEPU) configured to maintain power to a retention flop after power has been removed from the first subsystem, wherein a bit to which the retention flop corresponds is unpowered after power is removed from the first subsystem.