Back to results
US 12,675,189 B2Granted
Pseudoinverse-based noise equalization
AssigneeMicrochip Touch Solutions Limited
InventorPredrag D. Vukovic
Life of this patent
Estimating the term…
Abstract
A method including obtaining a first single-ended measurement signal and a second single-ended measurement signal; and producing an equalized measurement signal at least partially based on a predetermined pseudoinverse channel matrix and one or more of: the first single-ended measurement signal and the second single-ended measurement signal.
Claims20
An apparatus, comprising:
- a differential measurement circuit to provide a first single-ended measurement signal carried over a first physical channel of the differential measurement circuit and a second single-ended measurement signal carried over a second physical channel of the differential measurement circuit;
- and
- an equalization circuit to apply pseudoinverse-based noise equalization to one or more of the first single-ended measurement signal or the second single-ended measurement signal, wherein the pseudoinverse-based noise equalization comprises utilization of a predetermined pseudoinverse channel matrix at least partially based on a Singular Value Decomposition (SVD) of a channel matrix.
An apparatus, comprising:
- a differential measurement circuit to provide a first single-ended measurement signal and a second single-ended measurement signal;
- and
- an equalization circuit to apply pseudoinverse-based noise equalization to one or more of the first single-ended measurement signal or the second single-ended measurement signal,
- wherein the equalization circuit to produce an equalized measurement signal at least partially based on a predetermined pseudoinverse channel matrix and one or more of:
- the first single-ended measurement signal or the second single-ended measurement signal, and
- wherein the equalization circuit comprises:
- a differential signal reconstructor to produce a preliminary differential measurement signal at least partially based on a single-ended measurement input signal, the single-ended measurement input signal at least partially based on a difference between the first single-ended measurement signal and the second single-ended measurement signal;
- and
- a noise equalizer to produce a differential measurement signal at least partially based on the preliminary differential measurement signal and a predetermined pseudoinverse channel matrix.
6 more elements
An apparatus, comprising:
- a differential measurement circuit to provide a first single-ended measurement signal and a second single-ended measurement signal;
- and
- an equalization circuit to apply pseudoinverse-based noise equalization to one or more of the first single-ended measurement signal or the second single-ended measurement signal,
- wherein the equalization circuit to produce an equalized measurement signal at least partially based on a predetermined pseudoinverse channel matrix and one or more of:
- the first single-ended measurement signal or the second single-ended measurement signal, and
- wherein the equalization circuit comprises:
- a first noise equalizer to produce an equalized first single-ended measurement signal at least partially based on the first single-ended measurement signal;
- a second noise equalizer to produce an equalized second single-ended measurement signal at least partially based on the second single-ended measurement signal;
- and
- a differential driver to produce a differential measurement signal at least partially based on the equalized first single-ended measurement signal and the equalized second single-ended measurement signal.
7 more elements
A method, comprising:
- obtaining a first single-ended measurement signal and a second single-ended measurement signal carried a first physical channel of a differential measurement circuit and a second physical channel of the differential measurement circuit, respectively;
- and
- producing an equalized measurement signal at least partially based on a predetermined pseudoinverse channel matrix and one or more of:
- the first single-ended measurement signal and the second single-ended measurement signal, the predetermined pseudoinverse channel matrix at least partially based on a Singular Value Decomposition (SVD) of a channel matrix.
1 more element
A method, comprising:
- obtaining a first single-ended measurement signal and a second single-ended measurement signal;
- and
- producing an equalized measurement signal at least partially based on a predetermined pseudoinverse channel matrix and one or more of:
- the first single-ended measurement signal and the second single-ended measurement signal,
- wherein producing the equalized measurement signal comprises:
- producing a first single-ended equalized measurement signal at least partially based on the first single-ended measurement signal and a first predetermined pseudoinverse channel matrix of the predetermined pseudoinverse channel matrix;
- producing a second single-ended equalized measurement signal at least partially based on the second single-ended measurement signal and a second predetermined pseudoinverse channel matrix of the predetermined pseudoinverse channel matrix;
- and
- producing a differential measurement signal at least partially based on the first single-ended equalized measurement signal and the second single-ended equalized measurement signal.
6 more elements
Dependencies are inferred from the claim text.