Company Filing History:
Years Active: 1992
Title: The Innovations of James J Hjerpe: Pioneering All-Digital Phase-Locked Loop Technology
Introduction: James J Hjerpe, a talented inventor based in San Diego, CA, has made significant contributions to the field of electrical engineering through his innovative work in digital technology. His most notable invention is an all-digital phase-locked loop (PLL), which revolutionizes the way output clock signals are synchronized with reference clock signals.
Latest Patents: Hjerpe holds a patent for an all-digital phase-locked loop designed to synchronize an output clock signal with a reference clock signal efficiently. The patented technology utilizes a multiple-tap, digital delay chain in its forward path, delaying the output clock signal based on a digital number controlled by a counter in the feedback path. Key components of this innovation include a phase detector that provides LEAD and LAG signals to indicate the relationship between the output and reference clock signals, as well as a digital sequencer that dynamically adjusts the digital number for synchronism. This groundbreaking approach eliminates the need for the unstable voltage-controlled oscillators used in prior art, securing a more reliable and efficient synchronization method.
Career Highlights: Hjerpe is associated with NCR Corporation, where he continues to push the boundaries of digital technology. His work reflects a commitment to advancing the field of electronics and has garnered attention from industry leaders.
Collaborations: Throughout his career, Hjerpe has collaborated with esteemed colleagues such as J. Dennis Russell and Rocky M. Young. Together, they have worked to further develop innovative technologies that enhance digital synchronization processes, marking their collective impact on the industry.
Conclusion: James J Hjerpe exemplifies the spirit of innovation with his all-digital phase-locked loop technology. His contributions not only demonstrate ingenuity but also pave the way for future advancements in digital synchronization. As he continues to work at NCR Corporation, the engineering community eagerly anticipates his future inventions and the potential they hold for the industry.