Method to overlay a secondary communication channel onto an encoded primary communication channel
View Patent ↗The disclosure relates to 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. A portion of at least a first word of one or more packets may be encoded 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 RD(+), then the running disparity is reversed to RD negative RD(−). Similarly, if an encoded running disparity is RD negative RD(−), then the running disparity is reversed to RD positive 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.
1. A method for processing information in a primary communication channel, the method comprising:
encoding at least a portion of at least a first word of at least one packet in a datastream; and
reversing a running disparity of said encoded at least a portion of said at least a first word of said at least one packet in said datastream.
2. The method according to claim 1 , further comprising:
if said encoded running disparity of said encoded at least a portion of said at least a first word is RD positive RD(+), reversing said encoded running disparity to RD negative RD(−); and
if said encoded running disparity of said encoded at least a portion of said at least a first word is RD negative RD(−), reversing said encoded running disparity to RD positive RD(+).
3. The method according to claim 1 , further comprising assigning n bits of information to each of said at least a first word, where n is greater than or equal to 1.
4. The method according to claim 3 , further comprising generating 2 n −1 enhanced words having said reversed running disparity.
5. The method according to claim 3 , further comprising controlling a secondary channel with said n assigned bits, wherein said secondary channel is overlaid on the primary communication channel.
6. The method according to claim 1 , wherein said at least a first word is one of a data word, control word and idle word corresponding to a data packet, a control packet and an idle packet, respectively.
7. The method according to claim 1 , further comprising dynamically resizing a number of words utilized for said encoding between said first word and a second word of said at least one packet.
8. The method according to claim 7 , further comprising:
randomly selecting said first word from a corresponding first packet; and
randomly selecting said second word from a corresponding second packet.
9. The method according to claim 1 , further comprising:
receiving said encoded at least a portion of said at least a first word having said reversed running disparity;
determining said reversed running disparity; and
reversing said reversed disparity of said encoded at least a portion of said at least a first word of said at least one packet in said datastream.
10. A machine-readable storage having stored thereon, a computer program having at least one code section for processing information in a primary communication channel, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
encoding at least a portion of at least a first word of at least one packet in a datastream; and
reversing a running disparity of said encoded at least a portion of said at least a first word of said at least one packet in said datastream.
11. The machine-readable storage according to claim 10 , further comprising:
code for reversing said encoded running disparity to RD negative RD(−) if said encoded running disparity of said encoded at least a portion of said at least a first word is RD positive RD(+); and
code for reversing said encoded running disparity to RD positive RD(+) if said encoded running disparity of said encoded at least a portion of said at least a first word is RD negative RD(−).
12. The machine-readable storage according to claim 10 , further comprising code for assigning n bits of information to each of said at least a first word, where n is greater than or equal to 1.
13. The machine-readable storage according to claim 12 , further comprising code for generating 2 n −1 enhanced words having said reversed running disparity.
14. The machine-readable storage according to claim 12 , further comprising code for controlling a secondary channel with said n assigned bits, wherein said secondary channel is overlaid on the primary communication channel.
15. The machine-readable storage according to claim 10 , wherein said at least a first word is one of a data word, control word and idle word corresponding to a data packet, a control packet and an idle packet, respectively.
16. The machine-readable storage according to claim 10 , further comprising code for dynamically resizing a number of words utilized for said encoding between said first word and a second word of said at least one packet.
17. The machine-readable storage according to claim 16 , further comprising:
code for randomly selecting said first word from a corresponding first packet; and
code for randomly selecting said second word from a corresponding second packet.
18. The machine-readable storage according to claim 10 , further comprising:
code for receiving said encoded at least a portion of said at least a first word having said reversed running disparity;
code for determining said reversed running disparity; and
code for reversing said reversed disparity of said encoded at least a portion of said at least a first word of said at least one packet in said datastream.