Company Filing History:
Years Active: 2001-2012
Title: Innovations of John Justin Caffrey
Introduction
John Justin Caffrey is an accomplished inventor based in Indianapolis, IN (US). He holds a total of 4 patents that showcase his contributions to the field of audio technology. His work primarily focuses on wireless digital transmission and methods for enhancing audio quality.
Latest Patents
Caffrey's latest patents include a groundbreaking invention for the wireless digital transmission of low frequency effects and surround channels for surround sound systems. This innovative subwoofer is equipped with a wireless receiver that receives signals containing information for a Low Frequency Effects (LFE) channel and both surround channels. The design allows the LFE to be added to one or both surround channels, providing a stereo surround signal that includes a multiplexed LFE channel. The subwoofer utilizes the LFE channel to power surround speakers and passes the surround signals to the respective speakers. Additionally, a digital RF transmitter transmits the combined subwoofer and surround channels to the wireless receiver of the subwoofer.
Another significant patent by Caffrey is a method and apparatus for transmitting audio and non-audio information with error correction. This invention provides a digital quality transmission of audio and non-audio information using low-cost components. The method involves converting the data to conform to the CD standard format and generating a conditioned EFM signal for frequency modulation. This approach allows for low-cost transmission of data with error detection and correction, enhancing the reliability of audio and non-audio information transmission.
Career Highlights
Throughout his career, Caffrey has worked with notable companies, including Thomson Licensing S.a. and Thomson Licensing. His experience in these organizations has contributed to his expertise in audio technology and innovation.
Collaborations
Caffrey has collaborated with talented individuals such as Blaine Edward Ramey and Mingheng Wang. These partnerships have likely enriched his work and led to further advancements in his inventions.
Conclusion
John Justin Caffrey's contributions to audio technology through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the field, paving the way for advancements in wireless audio transmission and quality enhancement.