Analog Circuit Technology

Invented Crystal-Line™ and Current Balanced™ Analog Signal Isolation Technology

IET’s David Fiori, Jr. is an innovator in common mode signal isolation technology. His inventions include low cost, inherently stable and fault protected circuit technology that can provide high levels of common mode isolation in connection with unbalanced or single ended interface circuits. This technology is published in U.S. Patent Nos. 5,386,148, 5,436,593, and RE37,130. The RE37,130 patent teaches an extremely low cost and practical signal isolation circuit that was implemented in International Jensen Nitro™ series amplifiers, a famous name in aftermarket car stereo products. This technology was further developed to work in connection with balanced in addition to unbalanced interface circuits, and common mode isolation impedance was increased 100 to 500 times with very low cost and very stable and fault resistant circuit additions as taught by U.S. Patent Nos. 6,211,731, and 6,078,215. All in all, IET has developed a number of high performance audio products, ranging from innovative line level adapters, isolating analog audio signal preamplifiers, to an innovative speaker level noise gate system, all manufactured by Anamir Electronics, Inc. with the Crystal-Line and Current Balanced trademarks.

Digital Circuit and Industrial Control Systems

Extensive Experience in Digital Protocol Conversion and Peripheral Remote Control Emulation Technology

IET has over 10 years of experience in developing 46 digital protocol conversion and peripheral emulation devices. These product developments included the reverse engineering of vehicle OEM entertainment system multiplex control protocols and the implementation of those protocols to engage the remote control capabilities of a variety of entertainment system peripheral devices. For example, IET has developed protocol interfaces that make it possible to find, select and play iPod music tracks on a Ford factory entertainment system using Ford factory satellite radio receiver multiplex control protocols. IET has developed an extensive range of micro controller multi tasking firmware functions implemented in Microchip PIC micro controller assembler to maximize performance and minimize cost in high volume applications. IET has developed devices that simultaneously handle up to six time critical digital interface protocols while managing many other facets of device function, all with one low cost micro controller.

Experienced in Complex Industrial Control Systems

IET developed an extensive system for controlling a complex vacuum deposition system for integrated circuit fabrication. A number of systems using this control system were employed by Texas Instruments in their production of integrated circuits.

A non-linear coil winding automatic coil winding system for the manufacture of LVDT’s (Linear Variable Differential Transformers) based entirely on a PC-AT was developed for Schaevitz Engineering, a famous name in LVDTs.

Mixed Analog & Digital Circuit Technology

Invented Innovative Position Sensor Technology included in Digital Autoplex, RVIT, and Polytouch keyboard products.

IET’s David Fiori, Jr. is an innovator in frequency mode sensor technology. His Digital Autoplex ™ inductive sensor demodulation technology is now in widespread use in the sensor & transducer industries. David Fiori, Jr. also invented the RVIT (Rotary Variable Inductive Transducer) which incorporated the low cost Digital Autoplex circuit to achieve high levels of accuracy and temperature insensitivity in a non-contacting rotary angle measuring device. Devices using this technology are currently manufactured by Measurement Specialties. Other inventions originated by David Fiori, Jr. include a circuit that is able to develop high levels of accurate digital gain at low cost in connection with frequency domain signals which is described in Pat. No. 4,816,704, and the Electronic Music Keyboard inductive sensor system adopted by Ensoniq/E-My Systems Electronic Sampling Synthesizers. These inventions were disclosed in U.S. Patent Nos. 4,851,770, 4,841,245, 4,838,139, and 4,816,704. These circuits all work with the oscillation frequency developed from a set of inductors whose ratiometric inductance difference is abstracted with a synergistic mix of digital and analog circuits. These circuits achieve a very accurate indication of the position of a non-contacting moving part and are low in cost. Other sensor and transducer technologies developed by IET include a Torque Sensor System developed in cooperation with Bendix Technologies in addition to a Bathroom Scale and a non contacting Joystick.

PWM Digital to Analog and Analog to Digital Converter Technology

IET has innovated in precision PWM digital to analog converter technology as exemplified by patent No. 4,709,224, as well as innovative analog to digital converter technology for low cost digital voltmeter applications, as exemplified by patent no. 4,926,174.

Audio Noise Gate Technology

IET developed an Innovative audio noise gate that gates speakers for the ultimate in signal dynamic range. Patented low cost circuits included a mixed analog & digital circuit that develops the gate control with reduced sensitivity to random noise peaks. This system is protected by U.S. Pat. No. 5,664,022. Anamir Electronics, Inc. sells the noise gate system under their “Silencer™” trademark.

Color Recognition Systems

A color recognition system for Ford Aerospace was developed for tracking the manufacture of complex parts with color codes. This project involved precision circuits for the measurement of color intensities and software algorithms for the recognition of the colors from those measurements.

Crystal-Line™, Current Balanced™ and Silencer™ are trademarks of Anamir Electronics, Inc.