William J. Wrobleski is a notable inventor based in Sunnyvale, California, renowned for his significant contributions to video signal technology. His work has resulted in the award of five patents, emphasizing his dedication to enhancing the playability and quality of video signals.

Latest Patents

One of his latest patents is a "Method and apparatus for improving the playability of a PAL or NTSC video signal containing color burst modifications." This invention improves the known color stripe process used to prevent the recording of video signals. By modifying the phase of the color burst selectively, Wrobleski enhances color fidelity, reducing undesirable bands or stripes in video recordings. He also incorporates techniques to widen the normal color burst envelope, thereby improving performance in both NTSC and PAL color systems while ensuring that the PAL ID pulse remains undisturbed.

Another significant patent by Wrobleski is titled "Generational copy control of a video signal." This innovative method involves a digital video signal that includes content information alongside two types of supplemental information: a watermark pattern and a control pattern. By allowing copying of the content information only when a specific combination of these patterns is present, Wrobleski helps in securing video content against unauthorized duplication. The inclusion of pseudo-sync pulses in the blanking interval further enhances the integrity of the analog video signal converted from digital.

Career Highlights

William J. Wrobleski is a vital member of Macrovision Corporation, a company recognized for its innovations in video content protection. His inventive efforts align with the company’s mission to create secure and reliable technology for the multimedia industry.

Collaborations

Throughout his career, Wrobleski has collaborated with esteemed colleagues, including Ronald Quan and John O'Ryan, furthering the development of innovative technologies that enhance video signal applications. These partnerships exemplify the collaborative spirit prevalent in the tech and invention community.

Conclusion

William J. Wrobleski's inventions significantly improve video signal technologies, reflecting a commitment to innovation and excellence. His contributions not only advance technical capabilities within the industry but also protect valuable content against unauthorized reproduction, showcasing the importance of inventive thinking in the evolving landscape of multimedia technology.

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