Single wall domain information transfer arrangement

Claim 2

A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, means for moving single wall domains in first and second propogation channels through first and second transfer stages in said first and second channels, respectively, said transfer stages being spaced apart a distance such that the presence of a domain in each results in only negligible interaction effects, means for defining a relay position for a single wall domain intermediate said first and second transfer stages, said means for moving domains in said first channel being adapted to move said relay domain in a manner to alter the movement of a domain in said second transfer stage only when a domain is moved into said first transfer stage.

Claim 3

An arrangement in accordance with claim 1 wherein each of said first and second channels comprises a lateral displacement domain propagation arrangement.

Claim 4

An arrangement in accordance with claim 2 wherein each of said first and second channels is a closed loop for recirculating information therein.

Claim 5

An arrangement in accordance with claim 3 wherein said means for moving comprises first and second serpentine conductors adapted for moving domains along a first or second side of a rail in each of said first and second channels, respectively.

Claim 6

An arrangement in accordance with claim 4 wherein said first conductor comprises a geometry modified at said transfer position to include said relay position.

Claim 7

An arrangement in accordance with claim 5 wherein said relay position includes a single wall relay domain and a plurality of magnetically soft dots for fixing the position of said relay domain with respect to said first conductor such that said relay domain is normally not affected by a pulse in said conductors.

Claim 8

An arrangement in accordance with claim 6 wherein said transfer stage comprises a first position to said first side of said rail in said first channel and is spaced apart from said relay position a distance such that a domain moved into said first position by a pulse in said first conductor offsets said relay domain to a position where a pulse in said first conductor is operative to move said relay domain further in a manner to interact with and thus alter the course or a domain synchronously moved along the second side of the rail in said second channel.

Claim 9

A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, means for defining in said layer first and second multistage channels for said domains, each of said channels including a rail for defining first and second stable positions for a domain in each of said stages, said channels being disposed in close proximity at a transfer stage such that a first domain to a first side of said rail of said first channel is closely spaced from a second domain to a first side of said rail in said second channel said first and second domains being separated by an intermediate position and normally having only negligible effect on one another, means for defining a stable position for a relay domain in said intermediate position, said relay domain being displaced towards said second domain by said first domain, and an electrical conductor arrangement for advancing information in saId first channel, said arrangement comprising conductor loops corresponding to said stages and including at said transfer stage an elongated loop encompassing said relay domain in a manner such that only a displaced relay domain is moved by a pulse therein to a position to interact with said second domain to cause said second domain to cross said rail in said second channel.

Claim 10

A magnetic domain arrangement comprising a layer of material in which single wall domains can be moved, means for defining in said layer first and second multistage channels for said domains, each of said channels including a rail for defining first and second stable positions for a domain in each of said stages, said channels being disposed in close proximity at a transfer stage such that a first domain to a first side of said rail of said first channel is closely spaced from a second domain to a first side of said rail in said second channel said first and second domains being separated by an intermediate position and normally having only negligible effect on one another, means for defining a stable position for a relay domain in said intermediate position, said relay domain being displaced towards said second domain by said first domain, and an electrical conductor arrangement for advancing information in saId first channel, said arrangement comprising conductor loops corresponding to said stages and including at said transfer stage an elongated loop encompassing said relay domain in a manner such that only a displaced relay domain is moved by a pulse therein to a position to interact with said second domain to cause said second domain to cross said rail in said second channel.