Location History:
- Haddon Township, Camden County, NJ (US) (1994)
- Cherry Hill, NJ (US) (1997 - 2004)
Company Filing History:
2 out of 1,156 
1 out of 20,290 
1 out of 52 Years Active: 1994-2004
Title: The Innovations of Henry S. Landgraf
Introduction
Henry S. Landgraf is a notable inventor based in Cherry Hill, NJ (US). He has made significant contributions to the field of audio signal processing, holding a total of 4 patents. His work has had a lasting impact on the technology used in set-top boxes and audio systems.
Latest Patents
One of Landgraf's latest patents is a "Monaural and stereo audio signal control system." This system is designed for use in cable-signal set-top boxes and selects signal processing paths based on the nature of the incoming audio component. It distinguishes between "clear" and "masked" signals, allowing for effective processing of both monaural and stereo audio. Another significant patent is the "Method and apparatus for upgrading features and functions of a set top." This innovation allows for the easy upgrading or replacement of function circuitry in set-top boxes through a self-contained module, enhancing the flexibility and longevity of the devices.
Career Highlights
Throughout his career, Landgraf has worked with prominent companies such as General Instrument Corporation and Motorola Corporation. His experience in these organizations has contributed to his expertise in audio technology and signal processing.
Collaborations
Landgraf has collaborated with notable professionals in the field, including Vijay K. Pola and Anthony Troiano. These collaborations have further enriched his work and innovations.
Conclusion
Henry S. Landgraf's contributions to audio signal processing and set-top box technology demonstrate his innovative spirit and technical expertise. His patents continue to influence the industry and enhance user experiences in audio technology.