Ford Motor Company Limited

Visteon Global Technolgoies, Inc.

A123 Systems LLC

John William Wagner

J William Whikehart

John Elliott Whitecar

Nicholas Lawrence Difiore

James Alfred Wargnier

Christopher John Hagan

Brian D Rutkowski

Brian Moorhead

Paul W Firehammer

Systems and methods for communicating notice to limit battery degradation within a battery pack are disclosed. In one example, a signal is generated and passed between modules of a battery pack to provide notice to limit battery pack degradation. The system and method may be particularly useful for a battery pack with distributed battery modules.

System and method for communicating notice to limit degradation within a battery pack

A carrier-based signal is received from a tuner and is digitized to produce a digital intermediate frequency (IF) signal. Automatic gain control is applied to the carrier-based signal either prior to or after digitization. An adaptive intermediate frequency bandwidth control system detects IF signal level after channel filtering. The level is compared to a predetermined threshold having a value related to the known signal level of the AGC'ed signal which is being input to the channel filter in order to provide a measure of either 1) the presence of interfering adjacent channels, or 2) reception or a weak signal which can't be compensated for by AGC. The IF bandwidth is narrowed in either circumstance. Digital FIR or IIR filtering is used. The invention allows bandwidth switching to be done very quickly with minimal transient effects. A threshold value is selected depending upon the IF channel bandwidth being used at any given time.

Digital processing radio receiver with adaptive bandwidth control

An adaptive intermediate frequency bandwidth control system detects IF signal levels both before and after channel filtering. The two levels are compared to provide a measure of the presence of interfering adjacent channels. This measure is compared to a programmable threshold and the IF bandwidth is narrowed if any interferers are detected. Digital FIR or IIR filtering is used. The invention allows bandwidth switching to be done very quickly with minimal transient effects. A difference threshold is selected depending upon the IF channel bandwidth being used at any given time.

Growing community of inventors

Ann Arbor, MI, United States of America

John William Wagner