Patent ID: 11961567
Assignee: PUFSECURITY CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A key storage device, comprising:
a first key unit, configured to output a first logic value through a first node, comprising:
a first setting circuit configured to output a first setting voltage; and
a first inverter comprising a first output transistor having a first threshold voltage, configured to receive the first setting voltage and generate the first logic value; and

a second key unit, configured to output a second logic value through a second node, comprising:
a second setting circuit configured to output a second setting voltage; and
a second inverter comprising a second output transistor having a second threshold voltage, configured to receive the second setting voltage and generate the second logic value,
wherein an absolute value of the first threshold voltage is lower than an absolute value of the second threshold voltage,
wherein the first setting voltage is higher than the second setting voltage, and
wherein the first setting circuit and the second setting circuit comprises a first setting transistor and a second setting transistor, respectively, receiving a constant voltage at a control terminal.