Function extenders for enhancing a displayport feature set

A system comprising:

• a source;
• a sink operable to communicate with the source using a DisplayPort (DP) bus that adheres to the DP standard, wherein the DP bus includes a Main Link channel, an auxiliary (AUX) channel and a Hot Plug Detect (HPD) line;
• a first non-addressable device coupled between the source and the sink for use in a system having a source and a sink, the first non-addressable device comprising
• a first functional logic block for coupling between the source and the sink and operable to perform at least one function on data of one or both of the Main Link channel or data of the AUX channel received from the source, the data of the Main Link channel and the data of the AUX channel being addressed to the sink;
• and
• a Link-Training tunable Physical (PHY) repeater operable to transmit data of both the Main Link channel and the AUX channel after performance of the at least one function by the first functional logic block on the data of one or both of the Main Link channel or the AUX channel received from the source;
• and
• a second non-addressable device cascaded with the first non-addressable device operable to perform at least one other function on data of the Main Link channel or AUX channel different from the function performed by the first functional logic block of the first non-addressable device and wherein the second non-addressable device having a second functional logic block operable to perform the at least one other function to the data of the Main Link or AUX to which the at least one function of the first non-addressable device is performed.

A method for use in a computing system having a source that sends data addressed to a sink, the method comprising:

• receiving, by cascaded non-addressable devices, from the source, data addressed to the sink on first and second channels, the first channel for video and audio data or the second channel for sideband information;
• performing at least one function by at least one non-addressable device and one other function by another non-addressable device different from the function performed by the at least one non-addressable device on data of one or both of the first and second channels;
• and
• transmitting data of both the first and second channels, using a Physical (PHY) repeater, after performance of the at least one function and the at least one other function on the data of one or both of the first channel or the sideband channel received from the source and wherein the at least one function is operable in conjunction with the at least one other function performed by the another non-addressable device to perform the at least one other function when the non-addressable devices are cascaded together.

An article of manufacture having one or more non-transitory computer readable media storing instructions which, when executed by a system having a source that sends data addressed to a sink, cause the system to perform a method comprising:

• receiving, by cascaded non-addressable devices, from the source, data addressed to the sink on first and second channels, the first channel for video and audio data or the second channel for sideband information;
• performing at least one function by at least one non-addressable device and one other function by another non-addressable device different from the function performed by the at least one non-addressable device on data of one or both of the first and second channels;
• and
• transmitting data of both the first and second channels, using a Physical (PHY) repeater, after performance of the at least one function on the data of one or both of the first channel or the sideband channel received from the source and wherein the at least one function is operable in conjunction with the at least one other function performed by the another non-addressable device to perform the at least one other function when the non-addressable devices are cascaded together.