Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1995-07-31
1997-04-15
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
364707, B60L 100
Patent
active
056212500
ABSTRACT:
A low quiescent current wake-up interface and method for awakening an automotive electronics module from its inactive state. In one particular aspect of the invention, the wake-up interface comprises at least one wake-up input switch (28A-I, 38A-I); wake-up input switch interface circuitry (30A-I, 36A-I) for generating a first current transient when one of the input switches (28A-I, 38A-I) is closed; and wake-up sense circuitry (40) responsive to the first current transient for providing a wake-up command signal. Preferably the wake-up sense circuitry (40) includes a first latch (102) for detecting the first current transient, a second latch (172) responsive to the first latch (102) for providing the wake-up command signal, and timing circuitry (128) for providing a time delay. In another aspect of the invention, a method for awakening an automotive electronics module having a microcontroller (32) and at least one wake-up input switch (38A-I) coupled thereto comprises the steps of: generating a first current transient when one of the input switches is closed; sensing the first current transient; and generating a wake-up command signal in response to the first current transient.
REFERENCES:
patent: 4381552 (1983-04-01), Nocilini et al.
patent: 4455623 (1984-06-01), Wesemeyer et al.
patent: 4698748 (1987-10-01), Juzswik et al.
patent: 4839530 (1989-06-01), Greenwood
patent: 4965550 (1990-10-01), Wroblewski
patent: 5073943 (1991-12-01), Chapman
patent: 5166661 (1992-11-01), Chen
patent: 5196728 (1993-03-01), Jaux
patent: 5239520 (1993-08-01), Arnold
patent: 5249298 (1993-09-01), Bolan et al.
patent: 5305459 (1994-04-01), Rydel
patent: 5351041 (1994-09-01), Ikata et al.
patent: 5361364 (1994-11-01), Nagashige et al.
Elms Richard T.
Ford Motor Company
Godwin Paul K.
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