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For the Inventor, By the Inventor

Voerstetten, Germany

Heinrich Koehne

This inventor holds 4 USPTO granted patents. Top assignees: Deutsche Itt Industries Gmbh, Zenith Electronics Corporation. Active years: 1993-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Heinrich Koehne. Retrieved from https://idiyas.com/inventor/heinrich-koehne

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 20(Granted Patents)


Location History:

  • Emmendingen, DE (1993)
  • Voerstetten, DE (1994 - 1998)

Company Filing History:

goldMedal4 out of 173 
 
Deutsche Itt Industries Gmbh
 patents
silverMedal1 out of 948 
 
Zenith Electronics Corporation
 patents
where one patent can have more than one assignee

Years Active: 1993-1998

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4 patents (USPTO):Explore Patents
1. 5798802 - Video signal clamping circuit (1998-08-25),
2. 5448303 - Apparatus including amplitude limiter and associated method for (1995-09-05),
3. 5294985 - Signal limiting apparatus having improved spurious signal performance (1994-03-15),
4. 5220414 - Two-line comb filtering with spatial mixing (1993-06-15),

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.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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