1. A method of conveying information about peripheral device objects, the method comprising: displaying a plurality of attributes corresponding to state information of one or more of the peripheral device objects; displaying, simultaneously with displaying the plurality of attributes, a plurality of types of visual indicator appearances as potential appearances of an icon image to be generated, each type of visual indicator appearance being progressively modifiable in an intensity of appearance thereof according to a value of a selected attribute among the plurality of attributes corresponding to state information of the one or more peripheral device objects, wherein each type of visual indicator appearance is displayed according to at least three visual indicator appearance values corresponding to values of the selected attribute among the plurality of attributes corresponding to state information of the one or more peripheral device objects; receiving a visual indicator selection selecting a type of the visual indicator appearance among the displayed plurality of types of visual indicator appearances and receiving an input selecting an attribute among the plurality of attributes; creating a selection association between the selected attribute, the visual indicator selection, and the icon image; retrieving, from the one or more peripheral device objects, a measurement value for the selected attribute for representing the measurement of the selected attribute; generating the icon image according to the selection association and the retrieved measurement value, such that the appearance of the icon image corresponds to the visual indicator selection progressively modified in intensity to represent the measurement value of the selected attribute; and displaying the generated icon image.