Texas Instruments Corporation

Lennox Industries Inc.

Christopher Sean Tracy

Liming Xiu

Ajinder Singh

Hongbing Lian

Daniel Xavier Dudek

Evan David Cornell

Grady Cook

Richard Dutt

Yihe Hu

According to certain embodiments, a system comprises a master device and a plurality of slave devices. The master device configured to determine that one or more of the slave devices use a default address reserved for unconfigured devices, and to communicate a command to each slave device that is using the default address. The command comprises a list of unused addresses and an instruction to enter a selection round to select one of the addresses from the list.

Auto-addressing for a multi-device refrigeration system

A loop-powered transmitter includes a data isolation transformer including primary and secondary windings and an analog-to-digital converter (ADC) to convert a sensor signal to a digital value. The transmitter also includes a first microcontroller coupled between a multi-signal interface of the ADC and only one tap of the primary winding of the data isolation transformer, and a second microcontroller coupled to the secondary winding of the data isolation transformer. The first microcontroller is configured to receive the digital value from the ADC over the multi-signal interface and to provide data indicative of the digital value via a single output data line through the tap of the primary winding of the data isolation transformer to the second microcontroller. Unipolar voltage converters may also be included in the transmitter along with a current limiting resistor for the data isolation transformer to reduce the risk of saturating the data isolation transformer.

Loop powered transmitter with a single tap data isolation transformer and unipolar voltage converters

This invention uses a flying adder frequency synthesis circuit to provide the required frequency adjustments to accommodate the varying encoding density of a MPEG2 video data stream. This invention adjusts the local clock based on the information extracted from the program clock reference signal in the incoming data. This invention replaces an external or internal voltage-controlled crystal oscillator using a phase locked loop circuit on the video processing integrated circuit.

Method and apparatus for on-chip voltage controlled oscillator function

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Frisco, TX, United States of America

Christopher Sean Tracy