Iwao Akiyama

Title: Iwao Akiyama: Innovator in DDS Pulse Generator Technology

Introduction

Iwao Akiyama is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of digital signal processing, particularly in the development of pulse generator architectures. With a total of 2 patents to his name, Akiyama's work has advanced the capabilities of digital devices.

Latest Patents

Akiyama's latest patents include innovative designs for DDS pulse generator architectures. The first patent describes a DDS pulse generator that utilizes an accumulator to produce phase accumulator values. This design incorporates a lookup table containing a digital representation of a pulse waveform, allowing for the generation of a pulse output signal. A key feature of this invention is the use of a programmable modulo value, which enables the adjustment of the pulse output signal's period without altering the edge positions. Additionally, an address mapper is employed to optimize the mapping of phase accumulator values, resulting in a pulse output signal with independently controlled period and pulse width.

The second patent focuses on a triggered DDS pulse generator architecture. This design accumulates a phase increment value in response to a DDS clock, generating phase accumulator values for addressing a waveform lookup table. A time measurement circuit is integrated to determine the interval between a trigger signal and the subsequent DDS clock cycle. This interval is crucial for maintaining a constant time between the trigger signal and the desired output signal, enhancing the precision of the generated waveform.

Career Highlights

Iwao Akiyama is currently employed at Tektronix, Inc., where he continues to innovate in the field of digital signal processing. His work has been instrumental in developing advanced technologies that improve the performance of electronic devices.

Collaborations

Akiyama has collaborated with notable colleagues, including Steven K Sullivan and Yasumasa Fujisawa. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Iwao Akiyama's contributions to DDS pulse generator technology exemplify his innovative spirit and dedication to advancing digital signal processing. His patents reflect a deep understanding of the complexities involved in waveform generation, making a lasting impact in the field.