Communications: electrical – Digital comparator systems
Patent
1975-03-03
1977-04-12
Moffitt, James W.
Communications: electrical
Digital comparator systems
340174S, G11C 1114
Patent
active
040176045
ABSTRACT:
A packaging assembly for magnetic bubble chips comprising at least one module assembly board having a surface to which is secured in a substantially planar array a plurality of magnetic bubble chips for the storing and processing of information. First and second sets of terminals are located on opposed lateral edges of the module assembly board for the routing therethrough of information to and from the chips. First and second mounting boards are provided, each board having a set of receptacles for the soldering thereto of a corresponding set of the terminals. A first coil surrounds the module assembly board and is wound about an axis parallel to that of the plane of the chips for producing a magnetic field parallel thereto. A second coil surrounds the first coil and is wound about an axis perpendicular to that of the first coil and parallel to that of the plane of the chips for producing a magnetic field parallel thereto. A bias field source is positioned exterior to the second coil to produce a substantially constant magnetic field perpendicular to the plane of the chips. The first and second coils are excited to produce a rotating magnetic field parallel to the plane of the chips to control the movement of magnetic bubbles therein. Control components for the storage and processing of information in the chips are also provided. Convenient access to the chips may be gained by the sequential disassembly of the bias field source, the second coil, reheating the solder connection between the terminals and receptacles, and the first coil.
REFERENCES:
patent: 3702991 (1972-11-01), Bate et al.
patent: 3742471 (1973-06-01), Mikami
patent: 3848209 (1974-11-01), Lee et al.
AIP Conference Proceedings- No. 5; Pt 1, 1971 pp. 225-229.
IBM Technical Disclosure Bulletin - vol. 16, No. 7, Dec. 1973 pp. 2129-2130.
Naden Rex Alan
Noe Terry Wayne
Comfort James T.
Hiller William E.
Levine Harold
Moffitt James W.
Texas Instruments Incorporated
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