Adjustable equalizer control apparatus

Claim 2

In a communications transmission system including a transmission line and an adjustable bump equalizer responsive to signals transmitted by the transmission line, apparatus for controlling the frequency response levels of the several sections of the equalizer comprising: means for generating signals representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; processor means responsive to said integrated misalignment signals for solving a system of simultaneous equations relating said integrated misalignment signals to the effectiveness of each of said equalizer sections in each of said frequency ranges to produce signals for controlling the frequency response levels of said equalizer sections to reduce the misalignment of said transmission system; and means for applying said control signals to said equalizer sections.

Claim 3

The apparatus defined in claim 1 wherein said means for generating comprises: means for applying a test sweep signal having monotonically varying frequency of a predetermined amplitude to said transmission line; detector means responsive to the output signal of said equalizer for comparing the amplitude of said test sweep signal as transmitted by said transmission system to a predetermined reference amplitude level to develop a signal representative of the misalignment of said transmission system for all frequencies in said test sweep signal; and means responsive to the frequency of said test sweep signal for integrating said misalignment signal over each of said plurality of frequency ranges to produce said integrated misalignment signals.

Claim 4

The apparatus defined in claim 2 wherein said processor means multiplies said integrated misalignment signals by the inverse of a matrix representing the effectiveness of each equalizer section in each of said frequency ranges.

Claim 5

In a communications transmission system including a transmission line and an adjustable bump equalizer responsive to signals transmitted by the transmission line, apparatus for controlling the frequency response levels of the several sections of the equalizer comprising: means for generating signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; processor means responsive to said integrated misalignment quantities for generating quantities for controlling said equalizer to reduce the misalignment of said transmission system by solving a set of simultaneous equations relating said integrated misalignment signal quantities to quantities representing the effectiveness of each of said equalizer sections integrated over each of said frequency ranges; and means for applying said equalizer control quantities to said equalizer sections.

Claim 6

In a communications transmission system including a transmission line and an adjustable bump equalizer responsive to signals transmitted by the transmission line, apparatus for controlling the frequency response levels of the several sections of the equalizer comprising: means for generating signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; processor means responsive to said integrated misalignment quantities for generating quantities for controlling said equalizer to reduce the misalignment of said transmission system by solving a set of simultaneous equations relating said integrated misalignment signal quantities to quantities representing the effectiveness of each of said equalizer sections integrated over each of said frequency ranges; and means for applying said equalizer control quantities to said equalizer sections.

Claim 7

The apparatus defined in claim 4 wherein said means for generating comprises: means for applying a test sweep signal having monotonically varying frequency of a predetermined amplitude to said transmission line; detector means responsive to the output signal of said equalizer for comparing the amplitude of said test sweep signal as transmitted by said transmission system to a predetermined reference amplitude level to develop a signal representative of the misalignment of said transmission system for all frequencies in said test sweep signal; and means responsive to the frequency of said test sweep signal for integrating said misalignment signal over each of said plurality of frequency ranges to produce a vector of said integrated misalignment quantities.

Claim 8

The apparatus defined in claim 5 wherein said processor means multiplies said vector of integrated misalignment quantities by the inverse of a matrix of said quantities representing the effectiveness of each of said equalizer sections integrated over each of said frequency ranges to produce a vector of said equalizer control quantities.

Claim 9

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, comprising: means for applying a test sweep signal having monotonically varying frequency of a predetermined amplitude to said transmission line: detector means responsive to the output signal of said equalizer for comparing the amplitude of said test sweep signal as transmitted by said transmission system to a predetermined reference amplitude level to develop an output signal representative of the misalignment of said transmission system for all frequencies in said test sweep signal; means responsive to the output signal of said detector for integrating said misalignment signal over at least as many frequency ranges in said test sweep signal as there are equalizer sections to be adjusted to produce a plurality of integral misalignment signals; and means for multiplying said plurality of integral misalignment signals by the inverse of a matrix representing the effectiveness of each of said equalizer sections in each of said frequency ranges to produce signals for controlling the frequency response levels of said equalizer sections to reduce said misalignment.

Claim 10

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, comprising: means for applying a test sweep signal having monotonically varying frequency of a predetermined amplitude to said transmission line: detector means responsive to the output signal of said equalizer for comparing the amplitude of said test sweep signal as transmitted by said transmission system to a predetermined reference amplitude level to develop an output signal representative of the misalignment of said transmission system for all frequencies in said test sweep signal; means responsive to the output signal of said detector for integrating said misalignment signal over at least as many frequency ranges in said test sweep signal as there are equalizer sections to be adjusted to produce a plurality of integral misalignment signals; and means for multiplying said plurality of integral misalignment signals by the inverse of a matrix representing the effectiveness of each of said equalizer sections in each of said frequency ranges to produce signals for controlling the frequency response levels of said equalizer sections to reduce said misalignment.

Claim 11

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, comprising: means for applying a test sweep signal having monotonically varying frequency of a predetermined amplitude to said transmission line; detector means responsive to the output signal of said equalizer for comparing the amplitude of said test sweep signal as transmitted by said transmission system to a predetermined reference amplitude level to develop an output signal representative of the misalignment of said transmission system for all frequencies in said test sweep signal; means responsive to the output signal of said detector for integrating said misalignment signal over at least as many frequency ranges in said test sweep signal as there are equalizer sections to be adjusted to produce a vector of integral misalignment signal quantities; means for multiplying said vector of integral misalignment quantities by the inverse of a matrix of quantities representative of the effectiveness of each of said equalizer sections in each of said frequency ranges to produce a vector of signal quantities for controlling the frequency response levels of said equalizer sections to reduce the misalignment of said transmission system; and means for applying said vector of equalizer control quantities to said equalizer.

Claim 12

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, comprising: means for applying a test sweep signal having monotonically varying frequency of a predetermined amplitude to said transmission line; detector means responsive to the output signal of said equalizer for comparing the amplitude of said test sweep signal as transmitted by said transmission system to a predetermined reference amplitude level to develop an output signal representative of the misalignment of said transmission system for all frequencies in said test sweep signal; means responsive to the output signal of said detector for integrating said misalignment signal over at least as many frequency ranges in said test sweep signal as there are equalizer sections to be adjusted to produce a vector of integral misalignment signal quantities; means for multiplying said vector of integral misalignment quantities by the inverse of a matrix of quantities representative of the effectiveness of each of said equalizer sections in each of said frequency ranges to produce a vector of signal quantities for controlling the frequency response levels of said equalizer sections to reduce the misalignment of said transmission system; and means for applying said vector of equalizer control quantities to said equalizer.

Claim 13

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, each equalizer section being characterized by a normalized frequency response function representative of the effectiveness of the equalizer section at all frequencies in the transmission band of the system, comprising: means for generating signals representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said plurality of integral misalignment signals by a matrix derived from the normalized frequency response function of each section of said equalizer integrated over each of said frequency ranges to produce signals for controlling the frequency response levels of said equalizer sections to reduce the misalignment of the transmission system; and means for applying said equalizer control quantities to said equalizer.

Claim 14

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, each equalizer section being characterized by a normalized frequency response function representative of the effectiveness of the equalizer section at all frequencies in the transmission band of the system, comprising: means for generating signals representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said plurality of integral misalignment signals by a matrix derived from the normalized frequency response function of each section of said equalizer integrated over each of said frequency ranges to produce signals for controlling the frequency response levels of said equalizer sections to reduce the misalignment of the transmission system; and means for applying said equalizer control quantities to said equalizer.

Claim 15

The apparatus defined in claim 9 wherein said matrix is the inverse of a matrix representing the normalized frequency response functions of each of said equalizer sections integrated over each of said frequency ranges.

Claim 16

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, each equalizer section being characterized by a normalized frequency response function representative of the effectiveness of the equalizer section at all frequencies in the transmission band of the system, comprising: means for generating a vector of signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said vector of integral misalignment signals by a matrix of signal quantities derived from the normalized frequency response function of each section of said equalizer integrated over each of said frequency ranges to produce a vector of signal quantities for controlling the frequency response levels of said equalizer sections to reduce the misalignment of the transmission system; and means for applying said vector of equalizer control quantities to said equalizer.

Claim 17

Apparatus for controlling the frequency response levels of the several sections of an adjustable equalizer, said equalizer being responsive to the output signal of transmission line apparatus in a transmission system, each equalizer section being characterized by a normalized frequency response function representative of the effectiveness of the equalizer section at all frequencies in the transmission band of the system, comprising: means for generating a vector of signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said vector of integral misalignment signals by a matrix of signal quantities derived from the normalized frequency response function of each section of said equalizer integrated over each of said frequency ranges to produce a vector of signal quantities for controlling the frequency response levels of said equalizer sections to reduce the misalignment of the transmission system; and means for applying said vector of equalizer control quantities to said equalizer.

Claim 18

The apparatus defined in claim 11 wherein said matrix is the inverse of an effectiveness matrix of quantities proportional to the normalized frequency response functions of each of said equalizer sections integrated over each of the frequency ranges.

Claim 19

The apparatus defined in claim 12 wherein the elements in each column of the effectiveness matrix are the integrated normalized frequency response quantities for one of said equalizer sections.

Claim 20

In a transmission system including a transmission line and an adjustable equalizer responsive to the output signal of the transmission line, said equalizer having a plurality of equalizer sections the frequency response levels of which are controlled by a first plurality of signal quantities stored in memories associated with said equalizer, apparatus for generating a second plurality of signal quantities for modifying said first plurality of signal quantities to reduce the misalignment of the transmission system comprising: means for generating a vector of signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said vector of integrated misalignment quantities by a matrix of signal quantities representative of the effectiveness of each section of said equalizer in each of said frequency ranges to produce said second plurality of signal quantities; and means for applying said second plurality of signal quantities to said equalizer for modification of said first plurality of signal quantities.

Claim 21

In a transmission system including a transmission line and an adjustable equalizer responsive to the output signal of the transmission line, said equalizer having a plurality of equalizer sections the frequency response levels of which are controlled by a first plurality of signal quantities stored in memories associated with said equalizer, apparatus for generating a second plurality of signal quantities for modifying said first plurality of signal quantities to reduce the misalignment of the transmission system comprising: means for generating a vector of signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said vector of integrated misalignment quantities by a matrix of signal quantities representative of the effectiveness of each section of said equalizer in each of said frequency ranges to produce said second plurality of signal quantities; and means for applying said second plurality of signal quantities to said equalizer for modification of said first plurality of signal quantities.

Claim 22

In a transmission system including a transmission line and an adjustable equalizer responsive to the output signal of the transmission line, said equalizer having a plurality of equalizer sections the frequency response levels of which are controlled by a first pluraliTy of signal quantities stored in memories associated with said equalizer, apparatus for generating a second plurality of signal quantities for modifying said first plurality of signal quantities to reduce the misalignment of the transmission system comprising: means for generating a vector of signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said vector of integrated misalignment quantities by a matrix of signal quantities representative of the effectiveness of each section of said equalizer in each of said frequency ranges and by a diagonal matrix of gain control quantities to produce said second plurality of signal quantities; and means for applying said second plurality of signal quantities to said equalizer for modification of said first plurality of signal quantities.

Claim 23

In a transmission system including a transmission line and an adjustable equalizer responsive to the output signal of the transmission line, said equalizer having a plurality of equalizer sections the frequency response levels of which are controlled by a first pluraliTy of signal quantities stored in memories associated with said equalizer, apparatus for generating a second plurality of signal quantities for modifying said first plurality of signal quantities to reduce the misalignment of the transmission system comprising: means for generating a vector of signal quantities representative of the misalignment of said transmission system integrated over each of a plurality of frequency ranges in the transmission band of the system; means for multiplying said vector of integrated misalignment quantities by a matrix of signal quantities representative of the effectiveness of each section of said equalizer in each of said frequency ranges and by a diagonal matrix of gain control quantities to produce said second plurality of signal quantities; and means for applying said second plurality of signal quantities to said equalizer for modification of said first plurality of signal quantities.