This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignees: Analog Devices,inc., Other. Active years: 2003-2004.
Company Filing History:
2 out of 3,696 
1 out of 834,411 Years Active: 2003-2004
Title: Richard Schreier: Innovator in Digital-to-Analog Conversion Technology
Introduction
Richard Schreier is a notable inventor based in North Andover, MA (US). He has made significant contributions to the field of digital-to-analog conversion technology. With a total of 3 patents to his name, Schreier's work has had a lasting impact on the industry.
Latest Patents
One of his latest patents is titled "Mismatch-shaping for a quadrature digital-to-analog converter." This invention involves allocating elements from an element array to multiple DAC channels. Various state variables are utilized to keep track of element usage, ensuring that the number of state variables is less than the number of elements in the array. The element array can be treated as a bi-directional circular array, allowing for efficient allocation of elements to the two DAC channels. A collision resolution scheme is implemented to prevent overlapping allocations, making the process more efficient.
Another significant patent is the "Mixing digital to analog converter." This invention includes an analog output network, a current source, and a current switching circuit. The switch driver circuit responds to a digital input and a clock signal, selectively interconnecting the current source and the analog output network. The waveform generator drives the current source to produce an output current with multiple peaks, enhancing the DAC's performance.
Career Highlights
Throughout his career, Richard Schreier has worked with prominent companies, including Analog Devices, Inc. His experience in these organizations has contributed to his expertise in digital-to-analog conversion technologies.
Collaborations
Schreier has collaborated with talented individuals such as Susan Mary Dacy and Jennifer Lloyd. These partnerships have likely enriched his work and led to innovative solutions in his field.
Conclusion
Richard Schreier's contributions to digital-to-analog conversion technology are noteworthy. His patents reflect a deep understanding of the complexities involved in this area. As an inventor, he continues to influence the industry with his innovative ideas and solutions.