Selective switching between data sources

A method comprising:

• detecting a selection of a sink output port to be coupled to a desired output data source from a plurality of sinks;
• powering down a circuit in a first channel of a non-selected sink input port while leaving powered up (i) a circuit in a second channel of the non-selected sink input port carrying a vertical sync signal and (ii) a circuit in a third channel of the non-selected sink input port carrying an encryption enable code;
• detecting encrypted HDMI data at a plurality of input ports of the plurality of sinks;
• synchronizing a decryption engine at those sinks with encrypted data to an encryption engine of a respective data source of the encrypted HDMI data;
• maintaining synchronization while encrypted HDMI data is detected;
• outputting decrypted HDMI data at an output port of those sinks with encrypted data;
• and
• coupling the selected sink output port to a master output to select the desired output data source.

A method comprising:

• detecting a selection of a sink to be enabled from a plurality of sinks;
• powering down a circuit in a first channel of a non-selected sink input port while leaving powered up (i) a circuit in a second channel of the non-selected sink input port carrying a vertical sync signal and (ii) a circuit in a third channel of the non-selected sink input port carrying an encryption enable code;
• detecting encrypted HDMI data at a plurality of input ports of the plurality of sinks;
• synchronizing a decryption engine at those sinks with encrypted data to an encryption engine of a respective data source of the encrypted HDMI data;
• maintaining synchronization while encrypted HDMI data is detected;
• outputting decrypted HDMI data at an output port of those sinks with encrypted data;
• coupling the output ports of each sink to a master output;
• and
• selectively enabling an output port of the selected sink to output desired HDMI data from the respective data source at the master output.