Alistair J Knox

Title: Alistair J Knox: Innovator in Video Copy Protection

Introduction

Alistair J Knox is a notable inventor based in Reading, Berkshire, GB. He has made significant contributions to the field of video technology, particularly in the area of copy protection. With a total of two patents to his name, Knox has developed innovative solutions to combat illegal video copying.

Latest Patents

Knox's latest patents focus on enhancements to video anticopying processes. One of his patents introduces copy protection for video signals by adding pulses that create an abnormally low amplitude video signal on illegal copies. This enhancement includes a negative going waveform that mimics a sync signal, causing early horizontal or vertical retraces in the television receiver or videotape recorder. Another version employs a checker pattern of alternating gray and black areas, which results in a horizontal shift of picture information, significantly degrading viewability. Additionally, Knox's patents address vertical picture instability and irregular vertical retraces by modifying horizontal sync signals.

Career Highlights

Knox is associated with Macrovision Corporation, a company known for its advancements in video technology and copy protection solutions. His work has played a crucial role in developing methods to protect intellectual property in the video industry.

Collaborations

Throughout his career, Knox has collaborated with notable colleagues, including Peter J Wonfor and Jeremy J Corcoran. These partnerships have contributed to the advancement of video technology and the effectiveness of copy protection measures.

Conclusion

Alistair J Knox's innovative work in video copy protection has made a significant impact on the industry. His patents reflect a deep understanding of video technology and a commitment to safeguarding intellectual property.