Nine-position resistor ladder switch assembly

Details Nine-position resistor ladder switch assembly Nine-position resistor ladder switch assembly

2007-09-04

2007-09-04

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S155000

Reexamination Certificate

active

11363659

ABSTRACT:
A switch assembly is provided for use on a vehicle having a source of supply voltage. The assembly comprises a switching network having an input terminal configured to be coupled to the supply voltage and an output terminal. The network comprises: (1) nine series-coupled resistors coupled between the input terminal and the output terminal, each resistor having a substantially predetermined resistance; and (2) nine switches each coupled between the input terminal and the output terminal and capable of being opened and closed by an operator of the vehicle. Eight of the switches are each coupled to a different junction of adjacent resistors, and the ninth switch is coupled between the output terminal and the ninth resistor. The switch assembly further comprises a control module coupled to the output terminal for determining which, if any, of the nine switches is closed.

REFERENCES:
patent: 5952952 (1999-09-01), Choi et al.
patent: 6695837 (2004-02-01), Howell
patent: 6762693 (2004-07-01), Wand
patent: 6956952 (2005-10-01), Riggs
patent: 7020289 (2006-03-01), Riggs
patent: 7064682 (2006-06-01), Fedigan

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