Samsung patents memory circuit that adjusts for heat and signal noise
Samsung has been granted a patent for a specific circuit design used in computer memory chips. This decision feedback equalizer helps clean up data signals by adjusting for interference from previous bits and changes in temperature.
In the filing’s own words
A decision feedback equalizer (DFE) includes an adder including a first node and a second node, and the adder configured to: receive an input signal, amplify a voltage difference between a reference voltage level and a voltage level of the input signal, and output a first internal signal from the first node and a second internal signal from the second node, a first DFE tap configured to provide a first tap bias current to one of the first node and the second node, based on a first sample signal corresponding to an immediately preceding bit of the input signal, and a tap bias voltage generation circuit configured to provide the first DFE tap with a first tap bias voltage corresponding to the first tap bias current, based on the DQ bias voltage, a tap code, and a temperature code depending on a temperature of the DFE.
What exactly they claim (claim 1)
1. A decision feedback equalizer (DFE) comprising: an adder including a first node and a second node, and the adder configured to: receive an input signal, amplify a voltage difference between a reference voltage level and a voltage level of the input signal based on a DQ bias voltage, and output a first internal signal from the first node and a second internal signal from the second node; a first DFE tap configured to provide a first tap bias current to one of the first node and the second node, based on a first sample signal corresponding to an immediately preceding bit of the input signal; and a tap bias voltage generation circuit configured to provide the first DFE tap with a first tap bias voltage corresponding to the first tap bias current, based on the DQ bias voltage, a tap code set in a training operation of the DFE, and a temperature code depending on a temperature of the DFE.
Facts
- Company
- Samsung (Samsung Electronics Co., Ltd.)
- Official title
- Decision feedback equalizer, and memory device and memory system including the same
- Patent number
- US12738302B2
- Application number
- 18955883
- Filed
- Nov 21, 2024
- Granted
- Sep 15, 2026
- Inventors
- 2
- Claims
- 20
Classified under
G11C 7/1048 Physics & computingH04L 25/03057 Electricity & electronicsG11C 7/106 Physics & computingMore from Samsung in Chips & hardware
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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.