Multiple-bit, current mode data bus

A current mode data communication system to simultaneously transmit and simultaneously receive two digital data bits, comprising:

• a) a transmitter coupled between a high supply voltage source and a low supply voltage source, to combine said two digital data to form a current mode signal, wherein the current mode signal comprises a first positive current, a second positive current, a first negative current and a second negative current, whereby said transmitter has a first and second transmitter input terminal to capture the two digital data bits and a transmitter output terminal to transmit said current mode signal;
• b) a double bit current mode bus coupled to the transmitter output terminal to transfer said current mode signal;
• c) a receiver coupled between the high supply voltage source and the low supply voltage source, to receive the current mode signal, whereby said receiver has a receiver input terminal connected to the double bit current mode bus and a first and second receiver output terminal containing an unextracted form of the two digital data bits;
• and
• d) a data extractor circuit coupled to the first and second receiver output terminal to extract the two digital data bits from the unextracted form of the two digital data bits.

A multiple-bit bidirectional current mode communication system to simultaneously transmit and simultaneously receive a plurality of digital data bits, comprising:

• a) a first current mode transmission circuit to accept a first grouping of at least one bit of the plurality of the digital data bits and combine said first grouping to form a first current mode signal for transmission;
• b) a first current mode receiver circuit to receive a second current mode signal simultaneously with transmission of said first current mode signal and to extract a second grouping of at least one bit of the plurality of the digital data bits from said second current mode signal;
• c) a bidirectional transmission medium connected at a first end to the first current mode transmission means and the first current mode receiver means for transference of the first and second current mode signals;
• d) a second current mode transmission circuit coupled to a second end of the bidirectional transmission medium to transmit the second current mode signal that is a combination of the second grouping of the plurality of the digital data bits;
• and
• e) a second current mode receiver circuit coupled to the second end of the bidirectional transmission medium to receive the first current mode signal simultaneously with the transmission of the second current mode signal and extract the first group of the plurality of digital data bits.