This inventor holds 11 USPTO granted patents and 2 published patent applications. Top assignees: Silicon Laboratories Inc., Ember Corporation. Active years: 2010-2025.
Company Filing History:
Years Active: 2010-2025
Title: Dewitt Clinton Seward, Iv: Innovator in Voltage Detection and Cryptographic Security
Introduction
Dewitt Clinton Seward, Iv is a notable inventor based in Arlington, MA (US). He holds a total of 11 patents that showcase his contributions to the fields of voltage detection and cryptographic security. His innovative work has made significant impacts in technology and security systems.
Latest Patents
Seward's latest patents include advanced voltage glitch detectors. These detectors are designed to identify glitches on a supply voltage node. The positive glitch detector utilizes a capacitor and a resistor connected in series between the supply voltage node and ground. An amplifier is linked to a node between the capacitor and resistor, generating a clock pulse when a positive glitch occurs. Conversely, the negative glitch detector employs a capacitor and resistor in parallel to detect negative glitches, using an inverting amplifier to signal when a negative voltage glitch is present.
Another significant patent addresses countermeasures for power injection security attacks. This system determines if a cryptographic system is being monitored for power consumption analysis, which could compromise secret keys. It includes an external connection for input voltage and an internal voltage regulator that produces the necessary voltage for the cryptographic system. By monitoring the switch frequency in the regulator, the system can detect external voltage applications, allowing it to halt encryption or decryption operations if necessary.
Career Highlights
Throughout his career, Seward has worked with prominent companies such as Silicon Laboratories Inc. and Ember Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Seward has collaborated with notable individuals in his field, including Clayton H. Daigle and Gregory A. Hodgson. These partnerships have likely enhanced his work and led to further advancements in his inventions.
Conclusion
Dewitt Clinton Seward, Iv is a distinguished inventor whose work in voltage detection and cryptographic security has made a lasting impact. His innovative patents and collaborations reflect his commitment to advancing technology and security measures.