Keyword: Integrated circuits

Briefs: Electronics & Computers

A design modification and a fabrication process that implements the modification have been conceived to solve two problems encountered in the development of...

Application Briefs: Photonics/Optics

Transport networks have witnessed two significant trends over the past half-decade or so. The first has been an explosion in the bandwidth these networks can support and the distances over which...

Briefs: Semiconductors & ICs
Error-Detecting Counters for FPGA and ASIC State Machines

Error-detecting counters have been proposed as parts of fault-tolerant finite state machines that could be implemented in field-programmable gate arrays (FPGAs) and application-specific integrated circuits that perform sequential logic functions. The use of error-detecting counters would...

Briefs: Information Technology

Two reliable fault-tolerant coding schemes have been proposed for state machines that are used in field-programmable gate arrays and application-specific integrated circuits to implement sequential...

Briefs: Physical Sciences
Sensing a Changing Chemical Mixture Using an Electronic Nose

A method of using an electronic nose to detect an airborne mixture of known chemical compounds and measure the temporally varying concentrations of the individual compounds is undergoing development. In a typical intended application, the method would be used to monitor the air in an...

Articles: Imaging

Most of us have seen still images or slow-motion video of fast-moving objects, such as a missile in flight or a humming bird flapping its wings. Both scenarios...

Who's Who: Semiconductors & ICs

The Aeronautics Research Mission Directorate at NASA's Glenn Research Center has developed a new silicon carbide differential amplifier integrated...

Briefs: Semiconductors & ICs

A method of fabricating flexible assemblies comprising flexible integrated circuits bonded onto or into flexible membranes has been developed. The method provides for bonding of thinned...

Briefs: Electronics & Computers

An inexpensive wall clock has been devised for displaying solar time or sidereal time as it would be perceived on a planet other than the Earth, or for displaying sidereal time on...

Articles: Electronics & Computers

Medical imaging is an information processing technique that takes data samples from medical devices such as magnetic resonance imaging (MRI) or computer tomography (CT)...

Articles: Electronics & Computers

The production of many electronic devices begins with wafer processing. In addition to complementary metal oxide semiconductor (CMOS) integrated circuits (ICs), this can include such diverse...

Briefs: Electronics & Computers

Whenever a data acquisition (DAQ) system is moved from the controlled environment of the laboratory to validation testing or the manufacturing floor,...

Briefs: Medical

The figure schematically depicts a system of electronic hardware and software that noninvasively tracks the direction of a person’s gaze in real time. Like prior commercial noninvasive...

Application Briefs: Photonics/Optics

As the volume of consumer electronics increases, semiconductor fabrication plants are manufacturing larger and larger wafers to handle the demand (e.g., 300 mm substrates). The escalating...

Briefs: Semiconductors & ICs

An improved design has been devised for on-chip-circuitry for measuring the delay through a chain of combinational logic elements in a field-programmable gate array (FPGA) or...

Briefs: Electronics & Computers

A very-large-scale- integrated-circuit (VLSI) turbo decoder has been designed to serve as a compact, high-throughput, low-power, lightweight decoder core of a receiver in a data-communication system. In a...

Application Briefs: Photonics/Optics

In today’s “micro world,” complex electrical systems, including analog and digital components, can fit on integrated circuits smaller than a fingernail. Microfluidics, a subset of...

Briefs: Electronics & Computers
Advanced High-Definition Video Cameras

A product line of high-definition color video cameras, now under development, offers a superior combination of desirable characteristics, including high frame rates, high resolutions, low power consumption, and compactness. Several of the cameras feature a 3,840 × 2,160-pixel format with progressive...

Briefs: Semiconductors & ICs

A proposed visible-light imaging spectrometer on a chip would be based on the concept of a heterostructure comprising multiple layers of silicon-based photodetectors interspersed with long-wavelength-pass...

Briefs: Physical Sciences

Artificial sensor skins modeled partly in imitation of biological sensor skins are undergoing development. These sensor skins comprise flexible polymer substrates that contain and/or...

Briefs: Photonics/Optics

Microelectromechanical systems (MEMS) of a proposed type would be designed and fabricated to effect lateral and vertical alignment of optical fibers with respect to optical,...

Articles: Electronics & Computers

Throughout 2006, we’ve been celebrating the 30th anniversary of NASA Tech Briefs with special feature articles highlighting the past 30 years of a different technology category each month. This month, we...

Briefs: Materials

Microscopic thermal-contact pads that include carpetlike arrays of carbon nanotubes have been invented for dissipating heat generated in integrated circuits and similarly sized single electronic...

Briefs: Physical Sciences

The figure depicts a proposed miniature ion-mobility spectrometer that would share many features of design and operation of the instrument described in the immediately preceding article. The main differences...

Briefs: Electronics & Computers

In a modified configuration of a coaxial probe feed for a layered printed-circuit antenna (e.g., a microstrip antenna), the outer conductor of the coaxial cable extends through the thickness...

Briefs: Electronics & Computers
Digital Front End for Wide-Band VLBI Science Receiver

An upgrade to the very long baseline interferometry (VLBI) science receiver (VSR) — a radio receiver used in NASA’s Deep Space Network (DSN) — is currently being implemented. The current VSR samples standard DSN intermediate frequency (IF) signals at 256 MHz and after digital...

Articles: Electronics & Computers
30 Years of Electronics & Semiconductors

In celebration of the 30th Anniversary of NASA Tech Briefs, our features in 2006 highlight a different technology category each month, tracing the past 30 years of the technology, and continuing with a glimpse into the future of where the technology is headed. Along the way, we include insights from...

Briefs: Electronics & Computers

Research on microelectromechanical system (MEMS) resonators dates back to the mid-1960s, but MEMS timing references are only now being introduced commercially. In this time, two...

Briefs: Photonics/Optics
Improved Photon-Emission-Microscope System

An improved photon-emission-microscope (PEM) instrumentation system has been developed for use in diagnosing failure conditions in semiconductor devices, including complex integrated circuits. This system is designed primarily to image areas that emit photons, at wavelengths from 400 to 1,100 nm,...