Appliance control identification system employing user interface scan matrix
First Claim
1. A method of identifying a select user interface connected to a universal controller for a domestic appliance comprising:
- assembling the domestic appliance with the controller and the select user interface having an associated keypad matrix;
initiating a keypad matrix scan;
signaling shorts sensed during the keypad matrix scan to the controller; and
establishing a set of pre-stored operational firmware, corresponding to the select user interface, to be executed by the controller of the domestic appliance based on the shorts signaled in the keypad matrix.
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Accused Products
Abstract
A universal controller is employed in a domestic appliance including a user interface. In order to determine the particular user interface utilized and, correspondingly, the available cycles, features and options of the appliance, a scan of a keypad matrix associated with the user interface is performed to determine the presence and/or absence of shorts used to reflect the existence of permanently closed keys of the matrix. In accordance with the invention, the shorts can be indicated individually, in sequence and/or in combination in order to indicate to the controller which firmware to execute for a particular user interface.
62 Citations
14 Claims
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1. A method of identifying a select user interface connected to a universal controller for a domestic appliance comprising:
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assembling the domestic appliance with the controller and the select user interface having an associated keypad matrix;
initiating a keypad matrix scan;
signaling shorts sensed during the keypad matrix scan to the controller; and
establishing a set of pre-stored operational firmware, corresponding to the select user interface, to be executed by the controller of the domestic appliance based on the shorts signaled in the keypad matrix. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating of a domestic appliance comprising:
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assembling the domestic appliance with a universally programmed controller and a user interface selected from a plurality of user interfaces;
performing a scan of a keypad matrix for the appliance;
signaling a presence or absence of shorts during the keypad matrix scan to the controller;
identifying the user interface based on signals received during the scan of the keypad matrix; and
executing firmware during operation of the domestic appliance based on the identified user interface. - View Dependent Claims (7, 8, 9)
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10. A domestic appliance comprising:
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a control panel including a predetermined user interface having a plurality of control elements for selecting a desired one of a plurality of available operating cycles for the appliance, said plurality of control elements defining a keypad matrix corresponding to the predetermined user interface;
a controller, linked to the control panel, for establishing the one of the plurality of desired operating cycles, said controller being configured to operate with a plurality of distinct user interfaces; and
means for performing a scan of and signaling shorts in the keypad matrix in order to automatically identify the predetermined user interface of the control panel. - View Dependent Claims (11, 12, 13, 14)
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Specification