Location History:
- Emmendingen, DE (1993)
- Voerstetten, DE (1994 - 1998)
Company Filing History:
4 out of 173 
1 out of 948 
Years Active: 1993-1998
Title: Heinrich Koehne: Innovator in Video Signal Processing
Introduction
Heinrich Koehne is a notable inventor based in Voerstetten, Germany. He has made significant contributions to the field of video signal processing, holding a total of 4 patents. His work has had a lasting impact on how video signals are processed and adapted for digital devices.
Latest Patents
Koehne's latest patents include a video signal clamping circuit designed to adapt the DC level of a composite video signal to the processing range of digital video signal processing devices. This innovative circuit features an isolating capacitor in the analog video signal path and a controlled current source that charges or discharges the isolating capacitor using a digitally controlled clamping current. The clamping pulses are managed by a comparator circuit that compares predetermined reference values with mode-dependent comparison values.
Another significant patent involves an apparatus and method for generating a modified video signal. This system combines a correction signal derived from a digitized video input signal with the video input signal itself. The correction signal is processed through a frequency-band limiter and an amplitude limiter, ensuring that unwanted harmonics are avoided by utilizing a transfer function described by a rational integral function of the nth degree.
Career Highlights
Throughout his career, Koehne has worked with prominent companies such as Deutsche Itt Industries GmbH and Zenith Electronics Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in video technology.
Collaborations
Koehne has collaborated with notable individuals in the industry, including Hans-Juergen Desor and Herbert Elmis. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Heinrich Koehne's contributions to video signal processing through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence the way video signals are processed in modern technology.