Company Filing History:
1 out of 8 
1 out of 210 Years Active: 1977-1980
Title: Innovations of John R Thompson
Introduction
John R Thompson is a notable inventor based in Los Angeles, CA. He has made significant contributions to the field of television technology, holding a total of 2 patents. His work has influenced the way we experience and interact with television broadcasts.
Latest Patents
Thompson's latest patents include a subscription television apparatus and methods. This invention involves an encoder that begins the inversion of a video signal during the last horizontal trace line of a randomly selected vertical interval. The encoder continues to invert trace lines in the following field of the video signal while suppressing the amplitude of randomly selected horizontal blanking pulses during specific fields. A decoder is designed to reinvert trace lines following the detection of an inverted last horizontal trace line. Additionally, the decoder selectively rebiases the video signal to restore the horizontal blanking pulses upon detection of a suppressed amplitude.
Another significant patent is for a TV monitor that includes an antenna coupler capable of selectively coupling the TV receiver to an antenna or an RF oscillator. This oscillator operates to impose an RF signal onto the antenna input of the receiver between successive horizontal blanking periods. The monitor utilizes probes to detect the 'on' or 'off' condition of the receiver and to identify the channel to which the receiver is tuned. This innovative approach allows for channel identification through successive frequencies within the bandwidth of individual channels.
Career Highlights
Throughout his career, John R Thompson has worked with prominent companies in the television industry. He has been associated with American Television and Communications Corporation and Control Data Corporation. His experience in these organizations has contributed to his expertise and innovative capabilities in the field.
Conclusion
John R Thompson's contributions to television technology through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the industry and enhance the viewing experience for audiences.