Conductor-pattern apparatus for controllably inverting the sequence of a serial pattern of single-wall magnetic domains

Claim 2

An improved domain propagation channel arrangement including a layer of material in which single-wall magnetic domains are movable, a groove in said layer having serrated edges, and a propagation conductor which crosses said groove a plurality of times in a serpentine path, wherein the improvement comprises: the serrated edges of said groove are configured in such a manner that the lateral distance between the edges in a direction perpendicular to the longitudinal axis of said groove is constant over the length of said groove so that domains propagate in opposite directons along the edges of said groove in response to the application of a train of propagation pulses of alternating polarity to said propagation conductor.

Claim 3

In combination: a layer of material in which single-wall magnetic domains are movable; a groove in said layer having first and second serrated edges, the distance between said first and second edges in a direction perpendicular to the longitudinal axis of the groove being constant over the length of the longitudinal axis of said groove; conductive means for defining a first sequence of stable domain positions along said first edge of said groove and a second sequence of stable positions along said second edge of said groove, such that a serial pattern of domains propagates in a first direction along said first sequence of stable positions and a serial pattern of domains propagates in a second direction along said second sequence of stable positions in response to the application to said conductive means of a first pulse of a first predetermined amplitude, and a serial pattern of domains propagating in said first direction along said first sequence of stable positions is displaced to said second sequence of positions in response to the application to said conductive means of a second pulse of a second predetermined amplitude greater than said first amplitude, thereby reversing the direction of propagation and inverting the sequence of said pAttern of domains.

Claim 4

In combination: a layer of material in which single-wall magnetic domains are movable; a groove in said layer having first and second serrated edges, the distance between said first and second edges in a direction perpendicular to the longitudinal axis of the groove being constant over the length of the longitudinal axis of said groove; conductive means for defining a first sequence of stable domain positions along said first edge of said groove and a second sequence of stable positions along said second edge of said groove, such that a serial pattern of domains propagates in a first direction along said first sequence of stable positions and a serial pattern of domains propagates in a second direction along said second sequence of stable positions in response to the application to said conductive means of a first pulse of a first predetermined amplitude, and a serial pattern of domains propagating in said first direction along said first sequence of stable positions is displaced to said second sequence of positions in response to the application to said conductive means of a second pulse of a second predetermined amplitude greater than said first amplitude, thereby reversing the direction of propagation and inverting the sequence of said pAttern of domains.

Claim 5

The combination in accordance with claim 2 in which said conductive means crosses said groove plural times in a serpentine path which extends a predetermined lateral distance from the longitudinal axis of said groove.

Claim 6

The combination in accordance with claim 3 in which the lateral distance which the pattern defined by said conductive means extends from the longitudinal axis of said groove is sufficiently large to preclude lateral displacement of domains across said groove in response to one of said first pulses; and the lateral distance which the pattern defined by said conductive means extends from the longitudinal axis of said groove is sufficiently small to result in the lateral displacement of domains across said groove in response to one of said second pulses.

Claim 7

The combination in accordance with claim 4 in which domains are displaced from said first edge to said second edge of said groove in response to a second pulse of a first polarity and are displaced from said second edge to said first edge in response to a second pulse of a second polarity.

Claim 8

The domain propagation channel arrangement in accordance with claim 1 in which the lateral distance between the edges of said groove is sufficiently large to allow the oppositely propagating patterns of domains to pass one another.