Motorola Corporation

David D Kang

Neal W Hollenbeck

Lawrence Edwin Connell

William J Roeckner

Anthony R Schooler

W John Rinderknecht

An apparatus and method of filtering at least one set of data comprises determining a subset of Q data elements of a set of L data elements (12), and determining a filtered value based upon the subset of Q data elements (14). Each of the subset of Q data elements is greater than at most a first predetermined number of the L data elements and greater than or equal to at least a second predetermined number of the L data elements other than itself.

Time-weighted trimmed-mean filtering apparatus and method

An interference dependent adaptive phase clock controller method and system includes synthesis of a signal processing clock signal (307). An interference signal (311 ) dependent on a phase of the signal processing clock signal is measured, and a phase correction signal (317) is provided dependent thereon. A magnitude of the interference signal is reduced by adjusting the phase of the signal processing clock signal (307) dependent on the phase correction signal (317).

Interference dependent adaptive phase clock controller

An apparatus and method for determining a time that a system's main power was inactive includes a counter circuit (171) for accumulating transitions of a clock signal (149) while the system's main power (117) is inactive. Preferably, another circuit (159, 125) determines a periodicity of the clock signal (149) after the system's main power (117) transitions active. Then a computational circuit, preferably a microcontroller (129), determines the time (183) that the system's main power (117) was inactive dependent on a number of transitions of the clock signal (149) accumulated by the counter circuit (171) when the system's main power (119) was inactive and the determined periodicity of the clock signal (149) after the system's main power (117) transitions active. Preferably, this apparatus and method are used in a vehicle to determine how long a time that an engine is turned off and to modify an engine control strategy dependent on that determined time.

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Schaumburg, IL, United States of America

David D Kang