William Posner

Title: Innovations of William Posner

Introduction

William Posner is an accomplished inventor based in Plainview, NY (US). He holds 2 patents that showcase his expertise in video signal processing and data communication systems. His work has significantly contributed to advancements in technology, particularly in the realm of video signals.

Latest Patents

William Posner's latest patents include a data and synchronization extraction circuit for processing composite video signals containing closed captioning data. This invention features a dual mode voltage clamp realized in CMOS technology, which incorporates temperature-compensated current sources in the form of complementary current mirrors. Additionally, a modified version of these current sources allows for trimming of the current after manufacture and packaging. The circuit effectively separates sync pulses by amplifying the composite video signal and comparing it with a back porch level derived from a sample-and-hold device. Furthermore, frequency and phase synchronization is achieved through a combination of a frequency lock loop and a phase lock loop, generating a control voltage for a voltage-controlled oscillator in a flywheel mode. This oscillator provides a clean source of timing information for the circuit, while digital counting circuits eliminate the effects of impulse noise in detecting vertical retrace pulses.

Another notable patent focuses on a search and lock technique for reliable acquisition of data transmitted via horizontal scan lines of video signals. This invention minimizes issues related to false acquisition and missed or dropped lines. The system employs a two-tier approach, consisting of a search mode and a lock mode, to ensure the retrieval of valid data-bearing scan lines in successive fields of the video signal.

Career Highlights

Throughout his career, William Posner has worked with various companies, including Eeg Enterprises, Inc. and Extratek, Inc. His contributions to these organizations have furthered the development of innovative technologies in the field of video processing.

Collaborations

William has collaborated with notable individuals such as Eric B Berman and Apparajan Ganesan. These partnerships have enriched his work and led to significant advancements in his projects.

Conclusion

William Posner's contributions to the field of video signal processing and data communication systems are noteworthy. His innovative patents and collaborations reflect his dedication to advancing technology. His work continues to influence the industry and inspire future innovations.