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Samsung patents circuit design to reduce signal interference in chips

Samsung has been granted a patent for a specific electronic circuit design used to clean up data signals. The system uses two parallel logic circuits to compare a copy of a sent signal with the received signal, allowing the device to subtract unwanted noise or 'echo' from the data stream.

Why it mattersThis is a low-level hardware improvement that helps ensure data travels cleanly between chips, which is standard practice for maintaining reliable performance in modern electronics.

In the filing’s own words

A system may include a signal replica transmitter configured to generate a replica signal based on a first signal, and an echo canceller configured to remove crosstalk from a second signal. The echo canceller may include a first current mode logic (CML) circuit configured to receive a first set of input signals, and a second CML circuit configured to receive a second set of input signals, wherein a first output from the first CML circuit and a second output from the second CML circuit may be combined to remove the crosstalk from the second signal and generate an output signal from the echo canceller.

What exactly they claim (claim 1)

1. A system comprising: a signal replica transmitter configured to generate a replica signal based on a first signal; and an echo canceller configured to remove crosstalk from a second signal, the echo canceller comprising: a first current mode logic (CML) circuit configured to receive a first set of input signals; and a second CML circuit configured to receive a second set of input signals, wherein a first output from the first CML circuit and a second output from the second CML circuit are combined to remove the crosstalk from the second signal and generate an output signal from the echo canceller; wherein the first signal is generated by a near-end transmitter (NETX) of a first electronic device, and the second signal comprises a third signal generated by a far-end transmitter (FETX) of a second electronic device and the crosstalk from the first electronic device; wherein the first set of input signals comprises the replica signal, the first CML circuit comprises a first transistor and a second transistor, the replica signal is applied to a gate of the first transistor, and the replica signal is applied to a gate of the second transistor.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
Dual CML echo canceller with single-ended to differential conversion
Patent number
US12744561B2
Application number
18780281
Filed
Jul 22, 2024
Granted
Sep 22, 2026
Inventors
2
Claims
16

Classified under

H04B 3/32 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.