William F Schreiber

Title: The Innovations of William F. Schreiber

Introduction

William F. Schreiber is a notable inventor based in Cambridge, MA, with a remarkable portfolio of 13 patents. His work primarily focuses on advancements in television transmission systems, showcasing his expertise in encoding and signal processing technologies.

Latest Patents

Among his latest patents, Schreiber has developed a television transmission system using spread spectrum and orthogonal techniques. This innovative apparatus encodes a television production signal for transmission, which includes a first input signal carrying a first class of data and a second input signal carrying a second class of data. The second class of data requires a higher-quality transmission than the first class. The first stage of the system generates multiple serial samples of the output sample stream, while the second stage combines the input signals to produce an intermediate sample stream. This process includes a Discrete Fourier Transform (DFT) module that generates a parallel output stream, ultimately creating a frequency division multiplexed (FDM) output signal.

Another significant patent involves a two-stage spread-spectrum system for transmitting a coded TV signal. This system differentiates between components requiring near-perfect transmission and those for which imperfect transmission is acceptable. The first stage determines the signal-to-noise ratio (SNR) of the second components, while the second stage nullifies the effects of multipath in the transmission channel. The output is then modulated on a carrier to generate a transmission signal.

Career Highlights

Schreiber has had a distinguished career, contributing to significant advancements in television technology. He has worked at the Massachusetts Institute of Technology, where he has been involved in groundbreaking research and development projects.

Collaborations

Throughout his career, Schreiber has collaborated with notable individuals such as Michael O. Polley and Andrew Benjamin Lippman. These collaborations have further enriched his contributions to the field of television transmission technology.

Conclusion

William F. Schreiber's innovative work in television transmission systems has significantly impacted the industry. His patents reflect a deep understanding of signal processing and transmission technologies, making him a key figure in the field.