Marcel F C Schemmann

Title: Marcel F C Schemmann: Innovator in Optical and Power Supply Technologies

Introduction

Marcel F C Schemmann is a notable inventor based in Echt, Netherlands. He has made significant contributions to the fields of optical signal generation and power supply technologies. With a total of 6 patents to his name, Schemmann's work has had a considerable impact on the industry.

Latest Patents

One of Schemmann's latest patents is focused on the uncooled laser generation of narrowcast CATV signals. This innovation involves a cable television (CATV) distribution system and a method for forming and utilizing it. In one embodiment, a narrowcast optical signal is generated by an uncooled laser and converted into a narrowcast electrical signal by a receiver. Another embodiment combines a narrowcast optical signal with a broadcast optical signal at a hub, generating a composite optical signal that is split into broadcast and narrowcast components at a CATV node. Additionally, a third embodiment allows for the generation of a narrowcast optical signal by an uncooled laser, which is then combined with a broadcast optical signal using a single receiver.

Another significant patent by Schemmann is the frequency modulated self-oscillating switching power supply. This invention allows the power supply to operate in critical conduction mode as a self-oscillating power supply during moderate loads, while switching to discontinuous conduction mode under small loads. The design includes a power switch that remains off until a zero-current detector signals that the output current has fallen to zero, allowing for efficient power consumption management.

Career Highlights

Throughout his career, Schemmann has worked with prominent companies such as Koninklijke Philips Corporation N.V. and Broadband Royalty Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Some of Schemmann's notable coworkers include Venkatesh Gururaj Mutalik and Zhijian Sun. Their collaborative efforts have likely played a role in advancing the projects they have worked on together.

Conclusion

Marcel F C Schemmann is a distinguished inventor whose work in optical signal generation and power supply technologies has led to several patents. His contributions continue to influence the industry and showcase the importance of innovation in technology.