Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A multiplexer comprising multiplexer means for selecting one of a plurality of input signals as an output signal from said multiplexer means, first circuit means for applying a plurality of remotely generated input signals to said multiplexer means, local signal means for generating at least one local input signal for said multiplexer means, second circuit means for applying said local input signal as another input signal to said multiplexer means, common mode signal means for producing a common mode signal representative of the difference between a common signal level of said remotely generated input signals and a local common signal level of said local input signal, means for adding said common mode signal to said local input signals, and means for subtracting said common mode signal from an output signal from said multiplexer means.
Claim 2
Dependent Claim
134 words
A multiplexer comprising multiplexer means for selecting one of a plurality of input signals as an output signal from said multiplexer means, first circuit means for applying a plurality of remotely generated input signals to said multiplexer means, local signal means for generating at least one local input signal for said multiplexer means, second circuit means for applying said local input signal as another input signal to said multiplexer means, common mode signal means for producing a common mode signal representative of the difference between a common signal level of said remotely generated input signals and a local common signal level of said local input signal, means for adding said common mode signal to said local input signals, and means for subtracting said common mode signal from an output signal from said multiplexer means.
Claim 3
Dependent Claim
57 words
A multiplexer as set forth in claim 1 wherein said means for subtracting includes an operational amplifier having a first inverting input and second non-inverting input, third circuit means connecting said first input to an output of said common mode signal means, and forth circuit means connecting said second input to an input of said multiplexer means.
Claim 4
Dependent Claim
64 words
A multiplexer as set forth in claim 2 wherein said common mode signal means includes a second operational amplifier having an inverting input and a non-inverting input, fifth circuit means connecting said inverting input of said second amplifier to a local common signal level source and sixth circuit means connecting said non-inverting input of said second amplifier to a remote common signal level source.
Claim 5
Dependent Claim
36 words
A multiplexer as set forth in claim 1 wherein said means for adding includes a seventh circuit means connecting an output signal from said common mode signal means as an input to said local signal means.
Claim 6
Dependent Claim
26 words
A multiplexer as set forth in claim 4 wherein an output signal from said subtracting means is 1.5 times an input signal to said multiplexer means.
Claim 7
Independent Claim
75 words
A method for multiplexing remote and local signals comprising the steps of selecting ones of remote and local input signals, generating a common mode signal representing the difference between a common signal level of the remote input signals and a common signal level of the local input signals, adding the common mode signal to the local input signals and subtracting the common mode signal from the selected ones of the remote and local input signals.
Claim 8
Independent Claim
75 words
A method for multiplexing remote and local signals comprising the steps of selecting ones of remote and local input signals, generating a common mode signal representing the difference between a common signal level of the remote input signals and a common signal level of the local input signals, adding the common mode signal to the local input signals and subtracting the common mode signal from the selected ones of the remote and local input signals.