| 摘要 |
An encoder apparatus is provided, which includes an upper encoder and first and second lower encoders. The upper encoder has an upper encoded output and a corresponding upper running disparity. The first and second lower encoders have respective first and second lower encoded outputs. The first lower encoder generates the first lower encoded output assuming the upper running disparity has a first state. The second lower encoder generates the second lower encoded output assuming the upper running disparity has a second, different state. A multiplexer multiplexes the first and second lower encoded outputs based on the upper running disparity.
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