Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8179706 | Method for modifying data more than once in a multi-level cell memory location within a memory array A method and apparatus for marking a block of multi-level memory cells for performance of a block management function by programming at least one bit in a lower page of the memory cell block such that a first logic state is stored in the at least one bit in the lowe... | 05/15/2012 |
| 7961488 | Method for modifying data more than once in a multi-level cell memory location within a memory array A method and apparatus for programming one or more bits in an upper page twice depending on the value in a corresponding bit in a corresponding lower page in a multi-level cell device. The method includes the steps of initializing the bit in the lower page and the b... | 06/14/2011 |
| 5648943 | Disk recording/reproduction device of reduced thickness with driving mechanism for moving heads parallel to the disk face A disk recording/reproduction device according to the present invention includes: a recording medium including a disk and a protective case for the disk; loading mechanism for guiding the recording medium from a first position outside the disk recording/r... | 07/15/1997 |
| 4881198 | Duplicator in a magnetic bubble memory and process for duplicating bubbles therein A duplicator in a magnetic bubble memory with non-implanted patterns, a process for realizing the duplicator and a serial - parallel magnetic bubble memory having at least one of the aforementioned duplicators are disclosed. In a magnetic bubble memory ha... | 11/14/1989 |
| 4837741 | Magnetic bubble memory device In a magnetic bubble memory device in which a major line and minor loops are constituted by ion-implanted tracks, a gate is constituted having two functions, i.e., having a replicate function and a pseudo swap function using conductor patterns of two laye... | 06/06/1989 |
| 4694424 | Combined nucleate-replicate single wall domain generate structure A bubble generator for use in a bubble memory device combines a nucleating generator and replicating generator in a unified structure with first and second hairpins disposed at respective first and second regions to define nucleation and replication sites... | 09/15/1987 |
| 4577290 | Replicator with improved propagation performance Bubble-to-bubble interaction in a magnetic bubble domain memory is reduced by a notch provided in the outer edge of the replicator of the bubble memory device. The notch serves to slow down the movement of the bubble around the replicator or U-turn elemen... | 03/18/1986 |
| 4561069 | Magnetic bubble memory device gates A magnetic bubble memory device comprises minor loops for the storage of information and a major loop operably associated with the minor loops through gates, the minor loops being defined by an ion-implanted pattern and the gate portions of the major line... | 12/24/1985 |
| 4547865 | Magnetic bubble replicator In a magnetic bubble replicator having a soft magnetic material element for propagating a magnetic bubble along an edge thereof in response to a change in a direction of an external magnetic field and a hairpin-shaped conductor superimposed on the soft ma... | 10/15/1985 |
| 4535422 | Magnetic bubble memory with unimplanted motifs The invention relates to a magnetic bubble memory having a first layer of monocrystalline magnetic material with at least one crystallographic axis having the property of being aplanar easy magnetization axis, whereby the first layer has groups of unimpla... | 08/13/1985 |
| 4528645 | Magnetic bubble memory device A magnetic bubble memory device is disclosed in which a magnetic bubble propagation circuit for forming a minor loop is formed by ion implantation, and at least part of a major line or major loop and at least part of connecting portions between the minor ... | 07/09/1985 |
| 4525807 | Magnetic bubble store with non-implanted motifs and method for controlling the same A magnetic bubble store, using adjoining non-implanted motifs as bubble-propagating motifs, the store comprising 3n identical, electrically interconnected storage devices, n being a positive integer, which are produced on an identical circuit chip and eac... | 06/25/1985 |
| 4519049 | Magnetic bubble memory having auxiliary storage loops A magnetic bubble memory has a plurality of minor loops for storing data represented by magnetic bubble sequences, a write line for transferring write data to couple them to the minor loops and a read line for transferring read data to a bubble detector. ... | 05/21/1985 |
| 4471468 | Magnetic bubble memory device A magnetic bubble memory device has a plurality of memory loops which comprise minor loops and a map loop arranged independently of the minor loops. The map loop stores index data and parameter data of the memory chip. By detecting the index data, paramet... | 09/11/1984 |
| 4468757 | Method of operating magnetic bubble memory device in multipage mode A magnetic bubble memory system controller is provided to interface a user system and a magnetic domain chip. The controller will functionally accept commands from a user system and deliver those same commands to the appropriate devices associated with th... | 08/28/1984 |
| 4463447 | Magnetic bubble generator A nucleation type magnetic bubble generator according to this invention has a conductor loop which consists of a hairpin portion and wiring portions. Moreover, the relationship of Wࣘ3/4 P holds between the width W of each wiring portion and the period P... | 07/31/1984 |
| 4458334 | Redundancy map storage for bubble memories A magnetic bubble domain memory device is provided that includes a magnetic bubble domain data chip having a major/minor loop organization in which one or more defective minor loops may be tolerated. Information in the form of a redundancy map is stored w... | 07/03/1984 |
| 4435784 | Multi-replicator stretcher detector A detector for magnetic bubble domain devices including an input path for receiving and propagating magnetic bubble domains, an expander device which intersects the input path and functions to expand the bubble domain in a first direction, and a replicati... | 03/06/1984 |
| 4434476 | Magnetic bubble memory device and method for operating the same A magnetic bubble memory device includes: a magnetic layer with a first region having an easy axis of magnetization extending in a certain direction and a second region surrounding the first region and having an easy axis of magnetization substantially pe... | 02/28/1984 |
| 4423489 | Replicator for ion-implanted bubble domain devices using stretching action of charged wall A replicator for an ion-implanted magnetic bubble domain device including a single level conductor bubble cutting element disposed between first and second spaced apart bubble domain guide structures. The charged wall movement in response to the rotating ... | 12/27/1983 |
| 4415987 | Magnetic bubble passive replicator A passive replicator for bubble devices receives a bubble from an input channel and splits that bubble into two bubbles which go into two separate output channels when a rotating magnetic field is applied. The bubble replicator is a single element which h... | 11/15/1983 |
| 4414648 | Magnetic bubble domain swap gate circuit A magnetic bubble domain swap gate circuit (28) for use with a magnetic bubble element having an information transmission line along which magnetic bubble domains are transferred and an information storage loop in which magnetic bubble domains are stored,... | 11/08/1983 |
| 4414647 | Bubble domain replicator for contiguous-disk devices A bubble domain replicator for ion-implanted contiguous disk devices has a cusp portion and a tip portion extending substantially away from the cusp portion so that the cusp forms part of a super track and the tip forms part of a bad track. A hairpin cond... | 11/08/1983 |
| 4403304 | Replicator for ion-implanted bubble domain devices A replicator for a magnetic bubble domain device including a hairpin loop conductor element traversing first and second spaced apart bubble domain guide structures. The replicator functions to replicate a bubble domain travelling along the first bubble pr... | 09/06/1983 |
| 4386417 | High performance bubble chip architecture A major/minor loop bubble memory system architecture includes a passive replicator in the major loop read channel which is connected by a first path to a mode switch-annihilator and a merge point in the major loop write channel and by a second path to an ... | 05/31/1983 |
| 4370735 | Magnetic bubble memory device A magnetic bubble memory device having a bubble generator which generates a magnetic bubble by conducting a pulse current on its hairpin-shaped conductor loop and a major propagation circuit for propagating the magnetic bubble to a transfer-in gate circui... | 01/25/1983 |
| 4370734 | Switching method for effecting replication in magnetic bubble devices Replication in a magnetic bubble device is realized by a method of operation that is based on the principle of stretching, then cutting the bubble by the control current pulses. In this mode of operation, the bubble is stretched, under the influence of a ... | 01/25/1983 |
| 4360904 | Segmented stretcher detector for magnetic bubble domain devices A magnetic bubble domain device including a segmented stretcher detector. The detector is formed from a propagation path for magnetic bubble domains, and a first replicator disposed adjacent the propagation path. The first replicator functions to replicat... | 11/23/1982 |
| 4346454 | Bubble memory with on chip error map storage on permalloy disk elements A bubble memory chip includes a plurality of data loops, some of which may be defective, for storing magnetic bubbles representative of data therein. A serial-parallel input propagation path and a parallel-serial output propagation path are provided for p... | 08/24/1982 |
| 4333162 | Bubble memory with conductor programmable transparent error map Disclosed is a bubble memory having a plurality of data loops, some of which may be defective, and first input and output paths for propagating magnetic bubbles to and from the data loops, respectively. The memory further includes a plurality of redundant... | 06/01/1982 |
| 4326268 | Magnetic bubble memory device A magnetic bubble memory device according to this invention comprises a plurality of minor loops, a read-out major line is disposed at one end of the minor loops through gates having a replicating function, and a magnetic bubble detector which includes a ... | 04/20/1982 |
| 4322818 | Magnetic bubble memory device A magnetic bubble memory chip is arranged in such a way that the major surface of the chip will not cross perpendicularly with the external bias magnetic field to generate a component of the bias magnetic field which is parallel to the major surface. This... | 03/30/1982 |
| 4321693 | Magnetic bubble memory chip with dedicated redundancy data section provided thereon A magnetic bubble memory chip structure on which a plurality of magnetic bubble storage loops are provided for containing information data as represented by bubbles and voids and including a dedicated area on the chip for containing redundancy data as rep... | 03/23/1982 |
| 4316263 | Transfer and replication arrangement for magnetic bubble memory devices A magnetic bubble replication and transfer arrangement is disclosed which provides for replicating magnetic bubbles in thin planar layers of magnetic material without the need for electrical current carrying conductor elements. The arrangement includes a ... | 02/16/1982 |
| 4301517 | Replicate/transfer bubble domain switch An active replicate/transfer magnetic bubble domain switch which is especially compatible with gap tolerant structures is provided. The switch includes a broadfaced corner element of relatively massive structure which retains the bubble domain for more th... | 11/17/1981 |
| 4301516 | Bubble memory storage unit A magnetic bubble domain memory device is provided that includes a magnetic domain data chip having a major-minor loop organization with on-chip firmware providing redundancy information enabling the use of the chip even though one or more defective minor... | 11/17/1981 |
| 4281395 | Magnetic bubble memory device The magnetic bubble memory device of this invention is arranged such that a magnetic bubble detector and a nucleation type magnetic bubble generator in a chip are made to operate at different phases of the same operation cycle of a rotating magnetic field... | 07/28/1981 |
| 4276612 | Magnetic bubble memory device with divided electrical conductors A magnetic bubble memory device according to this invention is characterized in that an electrical conductor which supplies a current pulse for driving gates having a replicating function is divided into a plurality of parts. The divided parts are connect... | 06/30/1981 |
| 4272817 | Multiplexed single wall domain generators An improved magnetic domain generator for a magnetic arrangement employing a layer of garnet in which single wall domains (bubbles) are moved by an in-plane rotating magnetic field. A first domain generator includes a first propagation circuit for moving ... | 06/09/1981 |
| 4270186 | Multiple generator block replicate bubble memory device A block replicate bubble memory device is provided with a plurality of series storage loops, wherein data words are written into or read out of the storage loops in parallel. The data is entered into write lines and is read on to read lines which are conn... | 05/26/1981 |
