Memory decision feedback equalizer
AssigneeMicron Technology, Inc.
InventorsJennifer E. Taylor, Raghukiran Sreeramaneni
Life of this patent
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Abstract
A device includes a decoder configured to receive an input signal. The decoder is configured to also output a control signal based on the input signal. The device further includes an equalizer configured to receive a distorted bit as part of a data stream, receive the control signal, select a distortion correction factor based upon the control signal, apply the distortion correction factor to the distorted bit to offset inter-symbol interference from the data stream on the distorted input data to generate a modified value of the distorted bit, and generate a corrected bit based on the modified value of the distorted bit.
Claims20
A device, comprising:
- a plurality of switchable elements configured to transmit a voltage in response to a plurality of control signals activating one or more of the plurality of switchable elements to select the voltage from a plurality of voltages;
- a latch configured to:
- receive the voltage from the one or more of the plurality of switchable elements and a distorted bit from a data channel;
- and
- generate a corrected bit at least in part by comparing the distorted bit to the voltage;
- and
- a decoder configured to:
- receive one or more previously transmitted bits;
- generate a decoded value representative of the one or more previously transmitted bits as one of the plurality of control signals;
- and
- transmit the decoded value to the plurality of switchable elements.
A method, comprising:
- receiving a distorted bit;
- receiving an indication of previously transmitted bits;
- selecting a correction voltage from a plurality of correction voltages at least in part by generating, via a decoder, a control signal to control respective states of a plurality of switchable elements based on the indication of previously transmitted bits;
- and
- applying the voltage to the distorted bit to generate a corrected bit.
A device, comprising:
- a plurality of switchable elements configured to transmit a voltage based on respective states of one or more switchable elements of the plurality of switchable elements;
- a latch directly connected to the plurality of switchable elements and a data channel, wherein the latch receives the voltage from the plurality of switchable elements, and wherein the latch receives a bit from the data channel and uses the voltage to determine a value of the bit and
- a decoder coupled to the plurality of switchable elements and the latch, wherein the decoder is configured to generate a control signal to control the respective states of the one or more switchable elements based on an indication of previously transmitted bits.
Dependencies are inferred from the claim text.