# US 2010/0166125 A1 · Systems and methods for enhancing performance of a low-power transceiver > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166125 A1 - Document ID: US20100166125A1 - Status: Published application - Kind: A1 - Application number: 12/344,778 - Filed: 2008-12-29 - Published: 2010-07-01 - Earliest claimed: 2008-12-29 - Assignees: Intel Corporation - Inventors: Amir Mezer - Web page: https://patentgrep.com/patent/US20100166125A1 ## CPC - H04B 1/10: Means associated with receiver for limiting or suppressing noise or interference - H04B: TRANSMISSION ## Abstract According to some embodiments, a digital switching distortion canceller may receive Ethernet data along with an Ethernet class AB transceiver switching signal. A combiner may combine the output of the digital switching distortion canceller with a digital high switching distortion signal to generate a corrected output signal. According to other embodiments, a switching-signal-to-voltage-converter receives an Ethernet class AB transceiver switching signal and generates a common-mode compensation voltage adjustment. An analog combiner may combine the common-mode compensation voltage adjustment with a noisy common-mode signal to generate a stabilized common-mode voltage. Note that reduction of switching-related distortion might be achieved in the digital domain, in the analog domain, or in both domains according to the embodiments described herein. ## Claims ### Claim 1 An apparatus, comprising: a digital switching distortion canceller to receive Ethernet data along with an Ethernet class AB transceiver switching signal and to generate an output; and a combiner to combine the output of the digital switching distortion canceller with a digital high switching distortion signal to generate a corrected output signal. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the digital switching distortion canceller comprises a digital signal processor. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein digital switching distortion canceller includes a plurality of canceller elements, each associated with a data signal family. ### Claim 4 (depends on 3) The apparatus of claim 3, wherein digital switching distortion canceller further includes a plurality of canceller elements, each associated with an AB transceiver switching signal family. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein outputs from the plurality of canceller elements associated with the data signal families and outputs from the plurality of canceller elements associated with the AB transceiver switching signal families are combined to generate the output of the digital switching distortion canceller. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein at least some of the canceller elements are associated with finite impulse response taps. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the digital switching distortion canceller is adapted based on a least mean squares filter algorithm. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the digital high switching distortion signal is associated with a noisy common-mode voltage. ### Claim 9 A method, comprising: receiving Ethernet data at an Ethernet transceiver; and generating a corrected output based on a digital high switching distortion signal, along with at least one of (i) the received Ethernet data or (ii) an Ethernet class AB transceiver switching signal, to generate a corrected output signal. ### Claim 10 (depends on 9) The method of claim 9, wherein said generating includes: correcting the digital high switching distortion signal based on the received Ethernet data and at least one of a plurality of data signal families. ### Claim 11 (depends on 10) The method of claim 10, further comprising: building the plurality of data signal families. ### Claim 12 (depends on 9) The method of claim 9, wherein said generating includes: correcting the digital high switching distortion signal based on the Ethernet class AB transceiver switching signal and at least one of a plurality of switching signal families. ### Claim 13 (depends on 12) The method of claim 12, further comprising: building the plurality of AB transceiver switching signal families. ### Claim 14 (depends on 9) The method of claim 9, wherein said generating comprises represents an application of a linear correction model to a non-linear noise phenomena. ### Claim 15 (depends on 9) The method of claim 9, wherein said generating the corrected output is based on both (i) the received Ethernet data and (ii) the Ethernet class AB transceiver switching signal. ### Claim 16 An apparatus, comprising: a switching-signal-to-voltage-converter to receive an lower-power mode transceiver switching signal and to generate a common-mode compensation voltage adjustment; and an analog combiner to combine the common-mode compensation voltage adjustment with a noisy common-mode signal to generate a stabilized common-mode voltage. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the noisy common-mode signal is associated with a medium dependent interface output signal. ### Claim 18 (depends on 17) The apparatus of claim 17, further comprising: a filter associated with the switching-signal-to-voltage-converter. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the filter is associated with at least one of: (i) an adaptive filter, or (ii) an adjustable filter. ### Claim 20 (depends on 16) The apparatus of claim 16, wherein the lower power mode is associated with an Ethernet class AB mode and further comprising: a digital switching distortion canceller to receive Ethernet data along with an Ethernet class AB transceiver switching signal and to generate an output; and a digital domain combiner to combine the output of the digital switching distortion canceller with a digital signal to generate a corrected output signal.