Variable analog function generator

A variable analog function generator independent of external data source and control during time of generation of at least one predetermined output function of at least one input variable with said output function expressed in terms of hybrid variables each having an analog portion and a digital portion comprising

• first dedicated memory means having stored therein breakpoints and first differences defining the input variable,
• second dedicated memory means having stored therein tables of values defining said digital portion,
• means for generating said analog portions independent of said external data source and control in response to (1) the input variable and (2) said breakpoints and said first differences accessed in parallel from said first dedicated memory means, and,
• means for generating said output function independent of said external data source and control in response to (1) said analog portions and (2) said tables of values accessed from said second dedicated memory means.

A variable analog function generator independent of external data source and control during time of generation of a predetermined output function of at least one input variable with aid output functon being expressed in terms of hybrid variables each having an analog portion and a digital portion and receiving from said data source during set up time (1) breakpoints and first differences defining the input variable and (2) tables of values defining the digital portion comprising

• analog portions generation means including first dedicated memory means for receiving from said data source and loading only during set up time the breakpoints and first differences of the input variable,
• output function generating means including second dedicated memory means for receiving from said data source and storing only during set up time the tables of values of the digital portions,
• said analog portions generating means including means for comparing during function generation time and independent of said external data source and control the input variable with the breakpoints and first differences accessed in parallel from said first dedicated memory means for generating analog portions of the hybrid variable,
• means for producing sets of weighting function from said generated analog portions, and
• said output function generating means including means for multiplying during function generation time and independent of said external data source and control sets of weighting functions by their associated stored tables of values of the digital portions to produce sets of product signals and means for adding predetermined sets of product signals to generate said output function.