An H Do

Title: An H Do: Inventor in Neurotechnology

Introduction

An H Do is an inventor based in Irvine, California, whose work focuses on brain-signal acquisition and brain-computer interface technologies. His two patents describe systems designed to record neural signals and translate them into information that can support assistive devices and movement restoration.

Latest Patents

Do’s patent, “High Resolution Electroencephalograph Signal Acquisition System,” describes a non-invasive electroencephalography (EEG) recorder and a multiband active-electrode cap array. The system divides the desired brain-signal bandwidth into smaller bands, each handled by a separate amplification path. It also introduces a twisted differential feedback topology for amplifiers and active filters with ultra-high input impedance. The connected electrode network reduces wiring between the cap and its host processor, supports dynamic selection of the reference electrode, and adjusts the reference-node voltage before each recording step.

His patent, “Implantable Electrocorticogram Brain-Computer Interface System for Restoring Extremity Movement,” describes a fully implantable system that acquires and analyzes electrocorticogram (ECoG) signals recorded from the brain’s subdural space. A digital signal processor derives real-time commands from the signals and wirelessly sends them to a prosthetic device, such as a robotic gait exoskeleton or a functional electrical stimulation system. A subcutaneous cable connects the electrodes to the processor, avoiding wireless transmission of ECoG signals within the body.

Career Highlights

Do’s listed institutional affiliations include the University of California and the University of Southern California. His patented work spans non-invasive EEG recording and implantable ECoG-based control systems.

Collaborations

His listed collaborators include Zoran Nenadic and Payam Heydari. Their shared research context includes neural-signal technologies and engineering approaches relevant to brain-computer interfaces.

Conclusion

An H Do’s 2 patents address key challenges in acquiring brain signals and using them to control assistive technologies, connecting neural engineering with potential applications in mobility restoration.