Company Filing History:
Years Active: 1981-1985
Title: The Innovations of Albert J. Stienstra
Introduction
Albert J. Stienstra is a notable inventor based in Eindhoven, Netherlands, recognized for his significant contributions to the field of electronics and signal processing. With a total of two patents to his name, Stienstra's work has been instrumental in enhancing communication technologies, particularly in stereo decoding systems.
Latest Patents
Stienstra's latest inventions include two prominent patents that have showcased his expertise in electronic circuits:
1. **Multiplier Circuit for Multiplying an Information Signal**: This patent involves a sophisticated multiplier circuit designed specifically for amplitude modulation purposes in stereo decoders. The innovation comprises multiple switching circuits, each connected to a clock pulse generator, facilitating the manipulation of an information signal x(t) by a periodic signal y(t) with frequency f.sub.o. The circuit operates through carefully timed clock pulses and incorporates a weighting network to achieve precise signal enhancement.
2. **Stereo Decoder with 19KHz-Pilot Suppression and Improved Oscillator**: This invention addresses the complexities in decoding multiplex signals by implementing a demultiplexer that effectively isolates left-hand and right-hand sound signals. The stereo decoder incorporates a phase-locked loop with a multiplicative phase detector and a pilot elimination circuit, aimed at reducing unwanted pilot signals and enhancing the output quality of the decoded audio.
Career Highlights
Stienstra has made significant strides in his career, working for U.S. Philips Corporation, a leading player in the field of electronics and technology. His contribution to the company has been marked by innovation and advancement in audio technology, particularly in stereo systems that leverage sophisticated decoding techniques.
Collaborations
Throughout his career, Stienstra has collaborated with distinguished colleagues, including Theodoor A. Claasen and Arthur H. Van Roermund. These partnerships have fostered an environment of innovation, enabling the development of cutting-edge technologies that continue to influence the electronics industry.
Conclusion
Albert J. Stienstra stands as a prominent figure in the world of inventors. His work not only enriches the domain of audio technology but also exemplifies the spirit of innovation essential for technological advancement. With his patented inventions, he has contributed to enhancing the quality of sound reproduction, paving the way for future developments in the industry.