Matches 1 - 39 out of 39
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7414871 Program control circuit of flash memory device having MLC and method thereof  
A program control circuit and method thereof selectively controls a supply time of a word line bias voltage depending on the number of program cycles being in progress. Therefore, over-programming...
7383376 Apparatus and methods for storing data in a magnetic random access memory (MRAM)  
An apparatus and methods store data in a magnetic random access memory (MRAM) in a fast and efficient manner. Embodiments advantageously decrease the number of clock cycles required to store data...
6728122 Semiconductor memory device capable of rewriting data signal  
In DRAM, a bit line pair are connected to the respective gates of an N channel MOS transistor pair of a read gate, and a write data line pair are connected to the respective gates of an N channel...
4931990 Hardened bubble memory circuit  
An economical circuit arrangement permits disruption, during a nuclear event or single event upset, of operation in portions of a bubble memory system and in a computer connected thereto while...
RE32545 Magnetic domain logic device  
A magnetic device comprising a first and a second plate of a magnetic material between which domains are situated. An interaction force occurs between the domains in the two plates. Stable domain...
4550983 Magneto-optic device for the control of electromagnetic radiation  
A magnetic domain device has at least one post element formed from a material that exhibits magnetic domain characteristics and that is positioned on a non-magnetic substrate material. A pair of...
4276613 Close-packed bubble propagation device  
A close-packed magnetic bubble propagation device includes a pattern having a plurality of propagation elements positioned in at least four adjacent rows. These elements are spaced to provide a...
4218762 Device for close-packed magnetic domains  
A device for storing digital information in the form of magnetic domains including at least two ferrimagnetic layers on a substrate. The ferrimagnetic layers are separated by a compensation wall...
4179749 Defect tolerant scheme for a bubble lattice file  
A defect tolerant lattice file memory having means in the access column for annihilating lattice bubbles in a previously detected defective row thus eliminating an error in the digital information...
4178636 Gradientless propulsion of magnetic bubble domains  
Magnetic bubble domains are propagated in a magnetic medium in a desired direction using magnetic fields which have no spatial gradients. This is in contrast with conventional propagation...
4172290 Closed loop propagation pattern for bubble lattices  
A bubble storage system includes a closed loop propagation pattern suitable for use with a bubble lattice. The closed loop propagation pattern is folded and contains, for example, segments of a...
4164026 Contiguous element field access bubble lattice file  
A bubble domain storage system is described which has the best features of contiguous element bubble propagation systems and bubble lattice file systems. An array of magnetic bubble domains, such...
4151599 Magnetic bubble display units  
In a display unit utilizing magnetic bubbles, selective extinction of the magnetic bubbles in a matrix results in a pattern of letters and/or images which are combinations of the magnetic bubbles...
4151602 Magnetic bubble multilayer arrangement  
A magnetic bubble device comprising a non-magnetic substrate layer, and a sequence of magnetic layers joined to each other and to the magnetic substrate layer, e.g. by epitaxial growing of...
4144585 Bubble domain structures and method of making  
A magnetic bubble domain structure and method of making comprising a film of a nickel-iron alloy of 80 to 83.5% nickel content and substantially zero constant of magnetostriction formed by vapor...
4139904 Bubble lattice files with selected access channel positioning  
A bubble lattice file has plural access channels, each access channel providing access to a bubble column aligned therewith for reading and/or writing in the aligned column. At least some of the...
4138530 Magnetic structures  
A magnetic structure having a high magnetic bubble mobility which has the property that magnetic bubbles can be transported in it at very high velocities while using comparatively weak driving...
4125876 Field access bubble lattice file device  
A bubble lattice file comprising a plurality of propagate elements of magnetic film material positioned as an overlay over bubble supporting material with each element spaced from the bubble...
4122536 Self-organizing magnetic bubble lattice file  
A structure and technique are provided for improving the average access time in a bubble lattice file (BLF) storage, and for providing reordering capability in the lattice file. The bubble lattice...
4067002 Field access of bubble domain lattice  
Propagation of a lattice of magnetic bubble domains by field access techniques is achieved by using a periodic array of magnetic chevron elements. In response to the reorientation of a magnetic...
4058800 Image pickup element and system utilizing magnetic bubbles  
A photomagnetic image pickup element and system, the element comprising a thin film of magnetic material capable of having magnetic bubbles formed therein where the intensity of the magnetic-bubble...
4052711 Bubble lattice file using movable fixed lattice  
A lattice file using magnetic bubble domains which are arranged in a regular lattice which is moved or expanded to allow different operations, without requiring the need for bubble domains to be...
4052709 Accessing information in a lattice array by dislocation punching  
A string of bubble domains having a length equal to that of a column portion to be extracted from a bubble domain lattice array is laterally punched into the input side of the array at the height...
4052710 Systems using lattice arrays of interactive elements  
Apparatus is provided using as an integral portion thereof a confined array (such as a lattice) of interactive elements, the interactions among which are largely determinative of the positions of...
4034357 Patterns for use in the field access propagation of a bubble lattice  
A rotating field access pattern for use in the propagation of a bubble lattice is disclosed. The pattern contains two sets of parallel oblong elements that are substantially perpendicular to each...
4028685 Field access propagation of bubble lattice  
A rotating field access pattern for use in the propagation of a bubble lattice is disclosed. The pattern contains a set of diamond shaped magnetic elements arranged in a regular array. The elements...
4023150 Bubble translation system  
A bubble lattice translation system is disclosed. The system is a combination of two arrays of parallel conductors and confining means. One array of parallel conductors is oriented at an angle of...
4015249 Transfer of domains between fields  
A system suitable to transfer a bubble domain from one field to a second field where the field is the largest area formed by exposing a pattern and which all of the dimensions are critical is...
4001796 Bubble lattice structure with barrier  
A bubble lattice structure is disclosed containing a barrier positioned between at least two adjacent rows of bubble domains and/or stripe domains. More than one barrier may be utilized to retain...
3996577 Method and apparatus for the controlled generation of wall-encoded magnetic bubble domains  
A magnetic layer is exchange coupled to a bubble medium in an area where bubble domains are nucleated, and is used together with or without an externally applied in-plane magnetic field to...
3996571 Double layer bubble domain lattice system  
A bubble domain lattice system in which information exists as the presence and absence of bubble domains. A lattice exists in a conveyor layer and lattice bubble domains are coupled...
3982234 Hard-magnetic film overlay apparatus and method for magnetic mobile domain control  
Stationary patterns of magnetic domains in a film layer of magnetically hard material define local field gradients for movement control of single-wall domains located in a contiguous sheet of...
3979737 Bistable magnetic bubble domain devices  
A magnetic film is incorporated in a device suitable for use with a computer; the film is capable of supporting magnetic bubble domains of two different sizes corresponding to stable hysteresis...
3953841 Closed loop bubble lattice system and method for stabilizing  
A closed loop bubble lattice system and a method for stabilizing the same is disclosed. The closed loop bubble lattice system contains at least one portion being curved wherein the lattice...
3953842 Bubble lattice initialization  
A method of providing an initial lattice containing magnetic bubble domains in a film is disclosed. The method includes a first step of providing a confinement area in a film to contain magnetic...
3930244 Bubble domain lattice buffer arrangement  
Bubble domains in an enclosed lattice are translated for data accessing and buffered by providing stripe domains on both ends of a bubble lattice parallel to the direction of the bubble domain...
3913079 Magnetic bubble domain pump shift register  
A propagation means for moving interactive elements, such as magnetic bubble domains in a magnetic medium, which comprises a very simple structure that can be used under many bias field conditions....
3836895 OPTO-MAGNETIC MEMORY  
A device for the magnetic storage of data which comprises a plate of a magnetizable material having a periodic structure of magnetic domains. Recording data occurs with an external magnetic field...
3798622 BINARY MEMORY DEVICES  
A memory device consists of a material containing bubble domains, the state of the memory being determined by the polarity of the bubble domains. Use of a transparent material containing bubble...
Matches 1 - 39 out of 39