Method of operating magnetic bubble memory device in multipage mode

Claim 1

A shift register type memory, comprising; a plurality of minor loops each of which has a plurality of bits, a major loop which is large enough to permit data of at least two blocks to simultaneously exist therein when data of one block from said minor loops are constructed of the same number of bits as the number of said minor loops, means for controlling transfer of the data between said major loop and said minor loops, means for generating first timing signals for transferring out a plurality of blocks into said major loop sequentially and successively at time intervals shorter than a period of time required for the data to travel round said major loop, and means for generating a second timing signal for transferring in the data having been already transferred out to said major loop by said first timing signal, to predetermined positions within said minor loops at a point of time between timings of the successive transfer-out operations.

Claim 7

A method of operating a magnetic bubble memory device which includes a major propagation loop and a plurality of data storage minor loops operably associated therewith, wherein each minor loop has a plurality of bit positions for the storage of data as represented by a magnetic domain or a void, said method comprising: transferring a page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop, wherein the page of stored data is defined by a plurality of bit positions extending across the plurality of minor loops and made up of a single bit position from each of the plurality of minor loops and disposed in the same virtual bit position therein common to each of the minor loops; propagating said first page of data around said major loop to a point on the major loop where replication/annihilation of said data occurs; transferring a second page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop such that the first and second pages of data are a predetermined fixed distance d apart on the major loop; propagating both the first and second pages of data around the major loop until the second page of data reaches a point on the major loop where replication/annihilation of said second page of data occurs, while completing processing operations on said first page of data; thereafter propagating both the first and second pages of data around said major loop until the first page of data is aligned with the plurality of minor loops; and transferring the first page of data in parallel from the serially arranged bit positions of said major loop into the respective bit positions of each of said minor loops as disposed in the same virtual bit position therein common to each of said minor loops.

Claim 8

A method of operating a magnetic bubble memory device which includes a major propagation loop and a plurality of data storage minor loops operably associated therewith, wherein each minor loop has a plurality of bit positions for the storage of data as represented by a magnetic domain or a void, said method comprising: transferring a page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop, wherein the page of stored data is defined by a plurality of bit positions extending across the plurality of minor loops and made up of a single bit position from each of the plurality of minor loops and disposed in the same virtual bit position therein common to each of the minor loops; propagating said first page of data around said major loop to a point on the major loop where replication/annihilation of said data occurs; transferring a second page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop such that the first and second pages of data are a predetermined fixed distance d apart on the major loop; propagating both the first and second pages of data around the major loop until the second page of data reaches a point on the major loop where replication/annihilation of said second page of data occurs, while completing processing operations on said first page of data; thereafter propagating both the first and second pages of data around said major loop until the first page of data is aligned with the plurality of minor loops; and transferring the first page of data in parallel from the serially arranged bit positions of said major loop into the respective bit positions of each of said minor loops as disposed in the same virtual bit position therein common to each of said minor loops.

Claim 10

A method of operating a magnetic bubble memory device which includes a major propagation loop and a plurality of data storage minor loops operably associated therewith, wherein each minor loop has a plurality of bit positions for the storage of data as represented by a magnetic domain or a void, said method comprising: transferring a page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop, wherein the page of stored data is defined by a plurality of bit positions extending across the plurality of minor loops and made up of a single bit position from each of the plurality of minor loops and disposed in the same virtual bit position therein common to each of the minor loops; propagating said first page of data around said major loop to a point on the major loop where replication/annihilation of said data occurs; transferring a second page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop such that the first and second pages of data are a predetermined fixed distance d apart on the major loop, wherein the distance d between the first and second pages of data on the major loop corresponds to a positive even number of bubble propagation periods, and the distance d and the number of bit positions in each of said minor loops are mutually prime; propagating both the first and second pages of data around the major loop until the second page of data reaches a point on the major loop where replication/annihilation of said second page of data occurs, while completing processing operations on said first page of data; thereafter propagating both the first and second pages of data around said major loop until the first page of data is aligned with the plurality of minor loops; and transferring the first page of data in parallel from the serially arranged bit positions of said major loop into the respective bit positions of each of said minor loops as disposed in the same virtual bit position therein common to each of said minor loops.

Claim 11

A method of operating a magnetic bubble memory device which includes a major propagation loop and a plurality of data storage minor loops operably associated therewith, wherein each minor loop has a plurality of bit positions for the storage of data as represented by a magnetic domain or a void, said method comprising: transferring a page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop, wherein the page of stored data is defined by a plurality of bit positions extending across the plurality of minor loops and made up of a single bit position from each of the plurality of minor loops and disposed in the same virtual bit position therein common to each of the minor loops; propagating said first page of data around said major loop to a point on the major loop where replication/annihilation of said data occurs; transferring a second page of stored data in parallel from the plurality of minor loops into consecutive serially arranged bit positions of the major loop such that the first and second pages of data are a predetermined fixed distance d apart on the major loop, wherein the distance d between the first and second pages of data on the major loop corresponds to a positive even number of bubble propagation periods, and the distance d and the number of bit positions in each of said minor loops are mutually prime; propagating both the first and second pages of data around the major loop until the second page of data reaches a point on the major loop where replication/annihilation of said second page of data occurs, while completing processing operations on said first page of data; thereafter propagating both the first and second pages of data around said major loop until the first page of data is aligned with the plurality of minor loops; and transferring the first page of data in parallel from the serially arranged bit positions of said major loop into the respective bit positions of each of said minor loops as disposed in the same virtual bit position therein common to each of said minor loops.