Company Filing History:
Years Active: 1997
Title: Innovations of Ashfaq Choudhury in Pulse Width Modulation
Introduction
Ashfaq Choudhury is a notable inventor based in Calgary, Canada. He has made significant contributions to the field of digital signal processing. His innovative work has led to the development of a unique patent that enhances the efficiency of pulse width modulation systems.
Latest Patents
Choudhury holds a patent for a "Pulse Width Modulation Pulse Shaper." This system utilizes a charge storage unit to generate shaped pulses in response to incoming digital signals. The invention detects transitions or patterns in the digital signal and produces a charging waveform that controls the charge maintained in the charge storage unit. Consequently, this affects the instantaneous value of the output voltage produced by the unit. The charging waveform is controlled by transition characteristics stored in transition memories, which are addressed based on detected patterns or transitions in the incoming digital signal. The system is designed to handle binary transmissions effectively, with memories containing rising and falling characteristics. The charging waveform may consist of a series of pulses with varying widths, a signal with a variable duty cycle, or a varying pulse count. The capacitors in the charge storage unit are charged through cascaded low pass filters, with a buffer amplifier placed between them to isolate and control the amplitudes of the shaped pulses.
Career Highlights
Choudhury is currently employed at Novatel Communications Ltd., where he continues to innovate in the field of communications technology. His work has been instrumental in advancing the capabilities of digital signal processing systems.
Collaborations
Choudhury collaborates with his coworker, Humphrey Gordon, to further enhance their projects and drive innovation within their company.
Conclusion
Ashfaq Choudhury's contributions to pulse width modulation technology exemplify the impact of innovative thinking in the field of digital communications. His patent reflects a significant advancement that can lead to more efficient systems in the industry.
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