30 results about "Path stability" patented technology

A Hardware-Embedded Delay Physical Unclonable Function (“HELP PUF”) leverages entropy by monitoring path stability and measuring path delays from core logic macros. Reliability and security enhancing techniques for the HELP PUF reduce bit flip errors during regeneration of the bitstring across environmental variations and improve cryptographic strength along with the corresponding difficulty of carrying out model building attacks. A voltage-based enrollment process screens unstable paths on normally synthesized (glitchy) functional units and reduces bit flip errors by carrying out enrollment at multiple supply voltages controlled using on-chip voltage regulators.

The invention discloses a database optimized storage method based on the industrial control field. The method comprises the following steps of: S1, reading return path data, storing the return path data related to the automatic control rate into a real-time return path automatic control rate acquisition table, and storing the return path data related to the stability rate into a real-time return path stability rate acquisition table; taking the return path data with same space attribute as the tree node data, obtaining and storing the real-time automatic control rate and the stability rate of the tree node according to the return path data in the acquisition tables; S2, while reading the next round of return path data, executing the step S1, and simultaneously executing a step S3; and S3, storing a time stamp in a historical return path acquisition table before storing the current return path data; determining a statistic cycle, accumulating the length of the time stamp, storing the return path data in the historical return path acquisition table into each table corresponding to the statistic cycle, and then, obtaining the historical automatic control rate and the stability rate of the tree node. The invention further discloses a corresponding database optimized query method. With the method provided by the invention, the data query efficiency in a local database with a huge data volume can be improved.