Cylindrical magnetic domain propagating circuit and logic circuit

Claim 2

A cylindrical magnetic domain propagating circuit and logic circuit comprising: a sheet of magnetic material capable of retaining cylindrical magnetic domains; means for applying a magnetic field substantially perpendicular to the sheet so as to maintain the magnetic domain; means for generating a magnetic field rotating within the plane of the sheet; and a cylindrical magnetic domain propagating means composed of a plurality of Yshaped patterns of soft magnetic material thin film having three strokes forming a Y pattern, said strokes forming substantially 120* angles with one another, and the Y-shaped patterns being disposed on the sheet so that the magnetization sufficient to hold said domains moves from stroke to stroke in succession in the Y-shaped patterns in a direction depending on the rotating magnetic field, thereby making the magnetic domains propagate in the sheet toward a predetermined direction, said plurality of Yshaped patterns comprises a group of successively positioned Yshaped patterns each having one stroke shorter than the other two strokes, and the Y-shaped patterns being disposed recurrently so that said shorter strokes are parallel to each other and substantially perpendicular to the said direction of propagation and the Longer strokes of each Y-shaped pattern are adjacently aligned with one another without any intervening magnetic thin film patterns between the adjacent long strokes of adjacent Yshaped patterns.

Claim 3

A cylindrical magnetic domain propagating circuit and logic circuit as claimed in claim 1 wherein said plurality of Y-yhaped patterns further comprises a second group of Y-shaped patterns disposed to intersect with said first group and having the same structure as said first group array; and one Y-shaped pattern disposed at the intersection of said two groups and having all three strokes of equal length.

Claim 4

A cylindrical magnetic domain propagating circuit and logic circuit comprising: a sheet of magnetic material capable of retaining cylindrical magnetic domains; means for applying a magnetic field substantially perpendicular to the sheet so as to maintain the magnetic domain; means for generating a magnetic field rotating within the plane of the sheet; and a cylindrical magnetic domain propagating means composed of a plurality of Y-shaped patterns of soft magnetic material thin film having three strokes forming a Y pattern, said strokes forming substantially 120* angles with one another, and the Y-shaped patterns being disposed on the sheet so that the magnetization sufficient to hold said domains moves from stroke to stroke in succession in the Y-shaped patterns in a direction dpending on the rotating magnetic field, thereby making the magnetic domains propagate in the sheet toward a predetermined direction, said plurality of Y-shaped patterns comprises, a first group of successively positioned Y-shaped patterns having one stroke shorter than the other two strokes and being recurrently disposed so that the longer strokes of said patterns are adjacently aligned with one another, one of said first group constituting a first particular Y-shaped pattern having its shorter stroke longer than the short strokes of the other patterns in said first group, a second group of successively positioned Y-shaped patterns having one stroke shorter than the other two strokes and being recurrently disposed so that the longer strokes of said patterns are adjacently aligned with one another, one of said second group constituting a second particular Y-shaped pattern having one of its longs strokes longer than all other long strokes in said second pattern, and one of said second group constituting a third particular Y-shaped pattern adjacent to the longest stroke of said second particular Y-shaped pattern and displaced slightly above the other patterns in said second group, said third particular Y-shaped pattern having the same shape as all other patterns in said second group except for said second particular Y-shaped pattern, and said first and second groups being positioned relative to one another so that the end of the short stroke of said first particular Y-shaped pattern is closer to the end of said longest stroke of said second particular Y-shaped pattern than it is to the ends of its own long strokes, and the end of the short stroke of said first particular Y-shaped pattern is closer to the ends of its own long strokes than it is to that long stroke of said third particular Y-shaped pattern which is adjacent to the longest stroke of said second particular Y-shaped pattern.

Claim 5

A cylindrical magnetic domain propagating circuit and logic circuit comprising: a sheet of magnetic material capable of retaining cylindrical magnetic domains; means for applying a magnetic field substantially perpendicular to the sheet so as to maintain the magnetic domain; means for generating a magnetic field rotating within the plane of the sheet; and a cylindrical magnetic domain propagating means composed of a plurality of Y-shaped patterns of soft magnetic material thin film having three strokes forming a Y pattern, said strokes forming substantially 120* angles with one another, and the Y-shaped patterns being disposed on the sheet so that the magnetization sufficient to hold said domains moves from stroke to stroke in succession in the Y-shaped patterns in a direction dpending on the rotating magnetic field, thereby making the magnetic domains propagate in the sheet toward a predetermined direction, said plurality of Y-shaped patterns comprises, a first group of successively positioned Y-shaped patterns having one stroke shorter than the other two strokes and being recurrently disposed so that the longer strokes of said patterns are adjacently aligned with one another, one of said first group constituting a first particular Y-shaped pattern having its shorter stroke longer than the short strokes of the other patterns in said first group, a second group of successively positioned Y-shaped patterns having one stroke shorter than the other two strokes and being recurrently disposed so that the longer strokes of said patterns are adjacently aligned with one another, one of said second group constituting a second particular Y-shaped pattern having one of its longs strokes longer than all other long strokes in said second pattern, and one of said second group constituting a third particular Y-shaped pattern adjacent to the longest stroke of said second particular Y-shaped pattern and displaced slightly above the other patterns in said second group, said third particular Y-shaped pattern having the same shape as all other patterns in said second group except for said second particular Y-shaped pattern, and said first and second groups being positioned relative to one another so that the end of the short stroke of said first particular Y-shaped pattern is closer to the end of said longest stroke of said second particular Y-shaped pattern than it is to the ends of its own long strokes, and the end of the short stroke of said first particular Y-shaped pattern is closer to the ends of its own long strokes than it is to that long stroke of said third particular Y-shaped pattern which is adjacent to the longest stroke of said second particular Y-shaped pattern.

Claim 6

A cylindrical magnetic domain propagating circuit and logic circuit comprising: a sheet of magnetic material capable of retaining cylindrical magnetic domains; means for applying a magnetic field substantially perpendicular to the sheet so as to maintain the magnetic domain; means for generating a magnetic field rotating within the plane of the sheet; and a cylindrical magnetic domain propagating means composed of a plurality of Y-shaped patterns of soft magnetic material thin film having three strokes forming a Y pattern, said strokes forming substantially 120* angles with one another, and the Y-shaped patterns being dispoSed on the sheet so that the magnetization sufficient to hold said domains moves from stroke to stroke in succession in the Y-shaped patterns in a direction depending on the rotating magnetic field, thereby making the magnetic domains propagate in the sheet toward a predetermined direction, said plurality of Y-shaped patterns comprises at least two rows of Y-shaped patterns disposed near and in parallel relation to each other, each group comprising successively positioned Y-shaped patterns, all but one of which has one stroke shorter than the other two strokes and all except said one being of substantially the same shape, and said longer strokes aligned adjacently with one another, said one exception in each row having three stroke lengths different from those in said other Y-shaped patterns, and being disposed in said rows, respectively, in corresponding position, whereby a domain held at one stroke of said one exception in said first row will tend to move to a stroke of said one exception in said second row when said rotating field rotates and in the absence of a repelling force to prevent such movement.

Claim 7

A cylindrical magnetic domain propagating circuit and logic circuit comprising: a sheet of magnetic material capable of retaining cylindrical magnetic domains; means for applying a magnetic field substantially perpendicular to the sheet so as to maintain the magnetic domain; means for generating a magnetic field rotating within the plane of the sheet; and a cylindrical magnetic domain propagating means composed of a plurality of Y-shaped patterns of soft magnetic material thin film having three strokes forming a Y pattern, said strokes forming substantially 120* angles with one another, and the Y-shaped patterns being dispoSed on the sheet so that the magnetization sufficient to hold said domains moves from stroke to stroke in succession in the Y-shaped patterns in a direction depending on the rotating magnetic field, thereby making the magnetic domains propagate in the sheet toward a predetermined direction, said plurality of Y-shaped patterns comprises at least two rows of Y-shaped patterns disposed near and in parallel relation to each other, each group comprising successively positioned Y-shaped patterns, all but one of which has one stroke shorter than the other two strokes and all except said one being of substantially the same shape, and said longer strokes aligned adjacently with one another, said one exception in each row having three stroke lengths different from those in said other Y-shaped patterns, and being disposed in said rows, respectively, in corresponding position, whereby a domain held at one stroke of said one exception in said first row will tend to move to a stroke of said one exception in said second row when said rotating field rotates and in the absence of a repelling force to prevent such movement.