Erdős Number
Despite being neither a mathematician nor a prolific author, I'm quite proud to have an Erdős number of four. For the less-nerdly among you, an Erdős number is the degrees-of-separation in authorship between the incredibly prolific late mathematician Paul Erdős and another individual. Similarly, my Turing number is seven and my Torvalds number is three.
Academic Papers
Full Color-Tunable Vertically Stacked Quantum Dot Light Emitting Diodes for Next-Generation Displays and Lighting • December 2020 • Nanoscale • [Link]
We report solution-processed color tunable vertically stacked electroluminescent red, green, and blue quantum dot light emitting diodes (QLEDs). These QLEDs can be independently driven to produce all primary, secondary, and white lights. We have fabricated the device by chemical and electrical isolation of each QLED with transparent polymers and by the use of transparent electrodes. These stacked QLEDs can be used for next-generation display and lighting applications that need high pixel density along with quantum dots' intrinsic benefits such as low turn-on voltage, color purity, and solution processability.
A Technology-Agnostic Simulation Environment (TASE) for Iterative Custom IC Design Across Processes • Oct 2009 • ICCD'09 • [Link]
A designer's intent and knowledge about the critical issues and trade-offs underlying a custom circuit design are implicit in the simulations she sets up for design creation and verification. However, this knowledge is tightly conjoined with technology-specific features and decoupled from the final schematic in traditional design flows. As a result, this knowledge is easily lost when the technology specifics change. This paper presents a Technology Agnostic Simulation Environment (TASE), which is a tool that uses simulation templates to capture the designer's knowledge and separate it from the technology-specific components of a simulation. TASE also allows the designer to form groups of related simulations and port them as a unit to a new technology. We demonstrate the usefulness of TASE by investigating Read and Write noise margins for a 6T SRAM in predictive technologies down to 16 nm.
Body Area Sensor Networks: Challenges and Opportunities • Jan 2009 • IEEE Computer • [Link]
Body area sensors can enable novel applications in and beyond healthcare, but research must address obstacles such as size, cost, compatibility, and perceived value before networks that use such sensors can become widespread.
Single-Ended Coding Techniques for Off-Chip Interconnects to Commodity Memory • Apr 2007 • DATE '07 • [Link]
This paper introduces a class of single-ended coding schemes to reduce off-chip interconnect energy consumption. In contrast to double-ended codes that require specialized memories to participate, a single-ended code enables the memory controller to encode data stored in memory and subsequently decode that data when it is retrieved, allowing the use of commodity memories. Simulation results show that such codes can reduce the energy consumption of an uncoded off-chip interconnect by up to 42.5%.
Patents
System and Method for Simulation Visualization • [Link]
A method for simulation visualization coordinating a control logic component for modeling and simulating a physical product or process with a render engine that generates a visualization of the component's outputs, communicated via a predefined interface.
Display-Integrated Infrared Emitter and Sensor Structures • [Link]
An electronic display of coplanar hexagon-shaped pixels, some carrying infrared (IR) emitter subpixels and others carrying IR detector subpixels, each with anode and cathode layers surrounding an IR emissive or detector layer.
Three-Dimensional Electronics Distribution by Geodesic Faceting • [Link]
A flexible circuit board of facet locations connected by serial wire traces. When flat, gaps separate the facets; when formed into a three-dimensional shape the gaps are eliminated, permitting rigid sensor and display facets to form continuous surfaces.
Plenoptic Cellular Axis Redirection • [Link]
A display assembly with two microlens layers of walled lenslet cells, an image sensor layer, a display layer, and Fresnel prisms that redirect incoming and emitted light into and out of the cells.
Systems and Methods for Producing a Light Field from a Depth Map • [Link]
A system that determines depth data for each pixel of a source image and maps the pixels and depth data to a four-dimensional light field for display.
Optical Foveation for Integral Imaging • [Link]
An image sensor and electronic display each coupled to optical distortion elements, with a processing unit mixing distorted virtual and digitized images so that the second distortion element undistorts the result to produce an emitted light field.
Eccentric Incidence Luminance Pupil Tracking • [Link]
A flexible circuit board curved to be concentric with a viewer's eye, carrying individually-addressable facets whose emitters and receptors detect light reflected from the retina to determine the center of gaze.
Multi-Resolution Regionalized Data Transmission • [Link]
A bandwidth-reduction method for multi-resolution images of concentric regions: duplicate pixels are discarded per ring, ring fragments are compacted toward the center, and the array is resized to preserve greater resolution near the center of gaze.
Foveated Imaging System • [Link]
A display and controller that locate where a user's center of gaze intersects the display and reduce the angular and spatial resolution of concentric regions in proportion to their distance from that point.
Distributed Multi-Aperture Camera Array • [Link]
An electronic camera assembly of individually-addressable sensor facets, each able to capture at a selectable resolution, transmitting to a display to reproduce light captured at heterogeneous resolutions.
Display Assemblies with Electronically Emulated Transparency • [Link]
A display assembly with microlens layers on both sides of a circuit board that emulates transparency by emitting light at angles corresponding to the angles of incoming light detected on the opposite side.
Distributed Multi-Screen Array for High Density Display • [Link]
An electronic display assembly of individually-addressable display facets, each with a selectable display resolution, driven through facet locations on a circuit board to provide heterogeneous display resolutions.
Plenoptic Cellular Imaging System • [Link]
A microlens layer of walled lenslet cells adjacent to a pixel array layer, with optional filter layers that limit light passing through each cell to a specific incident angle.
Plenoptic Cellular Vision Correction • [Link]
A display assembly whose logic layer renders a sub-image in each microlens cell and applies linear transformations and shifts to the surrounding cells' sub-images according to a user's vision-correction parameters, providing digital vision correction.
In-Layer Signal Processing • [Link]
A display assembly with a logic unit layer that receives signals from a sensor array, performs operations on them, and transmits the resulting signals to a display array using the same signal protocol.
Direct Camera-to-Display System • [Link]
A display assembly with a sensor array and display array on opposite sides of a circuit board, each particular sensor pixel unit mapped to a corresponding display pixel unit so the display reproduces the light captured by its mapped sensor unit.