| 摘要 |
Disclosed herein is a method and system for providing a secondary communication channel overlaid on a primary communication channel using an enhanced encoding method to effectively expand the utilized information capacity of the primary communication channel. Aspects of the invention may include encoding a portion of at least a first word of one or more data packets in a datastream. A running disparity of the encoded word may be reversed. Hence, if an encoded running disparity of an encoded word is RD positive, i.e., RD(+), then the running disparity is reversed to RD negative, i.e., RD(-). Similarly, if an encoded running disparity is RD negative, i.e., RD(-), then the running disparity is reversed to RD positive, i.e., RD(+). The word may be a data word, control word, or an idle word corresponding to a data packet, a control packet, and an idle packet, respectively.
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