Random Core Patents (Class 365/98)
-
Patent number: 9697783Abstract: A display apparatus includes a first interpolator configured to generate first correction data for a first polarity corresponding to an input data using a first look up table which stores correction data for the first polarity compensating for a luminance difference between the first polarity and a second polarity opposite to the first polarity of a data voltage for the sub pixel, a first delay compensator configured to apply a correction value to the first correction data for the first polarity and generate second correction data for the first polarity, the correction value compensating for an RC delay based on a pixel position corresponding to the input data.Type: GrantFiled: November 25, 2014Date of Patent: July 4, 2017Assignee: Samsung Display Co., Ltd.Inventors: Dong-Hyun Yeo, Byung-Kil Jeon, Yong-Bum Kim, Eun-Seon Kim, Suk-Jin Park, Su-Hyun Jeong
-
Patent number: 9159394Abstract: A ring-shaped magnetoresistive memory device includes a ring-shaped magnetoresistive memory cell, a first conductor, and a second conductor. The first conductor is positioned on a first surface of the ring-shaped magnetoresistive memory cell for generating a first magnetic field pulse. The second conductor is positioned on a second surface of the ring-shaped magnetoresistive memory cell for generating a second magnetic field pulse. The first surface is opposite to the second surface. An extension direction of the first conductor is perpendicular to an extension direction of the second conductor. A time delay is between the first magnetic field pulse and the second magnetic field pulse.Type: GrantFiled: May 1, 2014Date of Patent: October 13, 2015Assignee: NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Jyh-Shinn Yang, Ching-Ming Lee, Te-Ho Wu
-
Patent number: 8575667Abstract: A magnetic memory device includes a free layer and a guide layer on a substrate. An insulating layer is interposed between the free layer and the guide layer. At least one conductive bridge passes through the insulating layer and electrically connects the free layer and the guide layer. A diffusion barrier may be interposed between the guide layer and the insulating layer. The device may further include a reference layer having a fixed magnetization direction on a side of the free layer opposite the insulating layer and a tunnel barrier between the reference layer and the free layer. Related fabrication methods are also described.Type: GrantFiled: May 11, 2012Date of Patent: November 5, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: KyungTae Nam, Jangeun Lee, Sechung Oh, Woojin Kim, Dae Kyom Kim, Junho Jeong
-
Patent number: 8198102Abstract: A magnetic memory device includes a free layer and a guide layer on a substrate. An insulating layer is interposed between the free layer and the guide layer. At least one conductive bridge passes through the insulating layer and electrically connects the free layer and the guide layer. A diffusion barrier may be interposed between the guide layer and the insulating layer. The device may further include a reference layer having a fixed magnetization direction on a side of the free layer opposite the insulating layer and a tunnel barrier between the reference layer and the free layer. Related fabrication methods are also described.Type: GrantFiled: August 12, 2009Date of Patent: June 12, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: KyungTae Nam, Jangeun Lee, Sechung Oh, Woojin Kim, Dae Kyom Kim, Junho Jeong
-
Patent number: 8184466Abstract: According to one embodiment, a semiconductor storage device includes a first memory cell, a second memory cell and a third memory cell. The first memory cell forms a connection path used for storage of data. The second memory cell varies a connection place from a connection place of the connection path formed in the first memory cell, and stores data different from the data stored in the first memory cell is stored. The third memory cell varies a connection place from the connection place of the connection path formed in the second memory cell, and stores data same as the data stored in the first memory cell is stored.Type: GrantFiled: June 10, 2010Date of Patent: May 22, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Koji Kohara, Takehiko Hojo
-
Patent number: 8111544Abstract: A method of writing a magneto-resistive random access memory (MRAM) cell includes providing a writing pulse to write a value to the MRAM cell; and verifying a status of the MRAM cell immediately after the step of providing the first writing pulse. In the event of a write failure, the value is rewritten into the MRAM cell.Type: GrantFiled: November 13, 2009Date of Patent: February 7, 2012Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Shine Chung, Hung-Sen Wang, Tao-Wen Chung, Chun-Jung Lin, Yu-Jen Wang
-
Patent number: 7791920Abstract: The present invention provides a method for providing magnetic shielding for a circuit comprising magnetically sensitive materials, comprising actively shielding the circuit from a disturbing magnetic field. A corresponding semiconductor device is also provided. The method and device allows shielding for strong disturbing magnetic fields.Type: GrantFiled: November 25, 2008Date of Patent: September 7, 2010Assignee: NXP B.V.Inventor: Kars-Michiel Hubert Lenssen
-
Patent number: 7474547Abstract: Magnetic shielding is provided using a variety of methods, systems, devices and circuits. Aspects of present invention provide a method for providing magnetic shielding for a circuit comprising magnetically sensitive materials. The circuit is actively shielded from a disturbing magnetic field. A corresponding semiconductor device is also provided. The method and device can provide shielding for strong disturbing magnetic fields.Type: GrantFiled: August 20, 2004Date of Patent: January 6, 2009Assignee: NXP B.V.Inventor: Kars-Michiel Hubert Lenssen
-
Patent number: 7263027Abstract: An integrated circuit chip having programmable functions and features in which one-time programmable (OTP) memories are used to implement a non-volatile memory function, and a method for providing the same. The OTP memories may be based on poly-fuses as well as gate-oxide fuses. Because OTP memories are small, less die area is utilized as compared to metal fuses. Addtionally, because OTP memories can be implemented as part of standard complementary metal oxide semiconductor (CMOS) processes, the method is less costly and complex than the use of electrically-erasable programmable read-only memories (E2PROMs).Type: GrantFiled: January 13, 2005Date of Patent: August 28, 2007Assignee: Broadcom CorporationInventors: Neil Y. Kim, Pieter Vorenkamp
-
Patent number: 7203382Abstract: A plurality of reference words based on a second distance index that allows coding of a first distance index are registered in an associative memory core in advance. In a first pipeline stage, a retrieved word having a predetermined number of bits is extracted from input data in a predetermined clock cycle, and the retrieved word is coded with the second distance index and output to the core. In a second pipeline stage, the core searches for a reference word inhabiting the largest similarity with respect to the retrieved word (winner) obtained in the previous clock cycle. In a third pipeline stage, the core output result in the previous clock cycle is analyzed, one winner is determined on the basis of a specific priority, and an address indicating the location of the winner and the distance between the input data and the winner are coded and output.Type: GrantFiled: June 4, 2003Date of Patent: April 10, 2007Assignee: President of Hiroshima UniversityInventors: Hans Juergen Mattausch, Tetsushi Koide
-
Patent number: 7075807Abstract: A magnetoresistive or magnetic memory element and a magnetic random access memory having one or more magnetic memory elements. The memory element includes a magnetic tunnel junction including first and a second magnetic layers. The first magnetic layer having a free magnetization. The free magnetization of the first magnetic layer is magnetically coupled to a first current line and a second current line for switching the free magnetization, and a mechanism for applying a static magnetic offset field in the direction of at least one of the first and second current lines.Type: GrantFiled: August 18, 2004Date of Patent: July 11, 2006Assignees: Infineon Technologies AG, Altis SemiconductorInventors: Rainer Leuschner, Daniel Braun, Gill Yong Lee, Ulrich Klostermann
-
Patent number: 6949779Abstract: There are provided a first reference layer, in which a direction of magnetization is fixed, and a storage layer including a main body, in which a length in an easy magnetization axis direction is longer than a length in a hard magnetization axis direction, and a projecting portion provided to a central portion of the main body in the hard magnetization axis direction, a direction of magnetization of the storage layer being changeable in accordance with an external magnetic field.Type: GrantFiled: September 3, 2003Date of Patent: September 27, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Kai, Shigeki Takahashi, Tomomasa Ueda, Tatsuya Kishi, Yoshiaki Saito
-
Publication number: 20040109339Abstract: A method and system for providing and using a magnetic random access memory are disclosed. The method and system include providing a plurality of magnetic memory cells, a first plurality of write lines, and a second plurality of write lines. The first plurality of write lines is a plurality of magnetic write lines. At least one of the plurality of magnetic lines and at least one of the second plurality of write lines each carrying a current for writing to at least one of the plurality of magnetic memory cells. Preferably, the plurality of magnetic write lines have soft magnetic properties and are preferably magnetic bit lines. For magnetic tunneling junction stacks within the magnetic memory cells, the magnetic bit lines are preferably significantly thicker than and closely spaced to the free layers of the magnetic memory cells.Type: ApplicationFiled: June 11, 2003Publication date: June 10, 2004Inventor: David Tsang
-
Patent number: 6704220Abstract: A resistive memory device (40) and method of manufacturing thereof including magnetic memory cells (14) having a second magnetic layer (20) including at least a first and second material (24/26). The Curie temperature of the second material (26) is lower than the Curie temperature of the first material (24). A plurality of non-continuous second conductive lines (22) are disposed over the magnetic memory cells (14). A current (28) may be run through the second conductive lines (22) to increase the temperature of the second material (26) to a temperature greater than the second material (26) Curie temperature, causing the second material (26) to lose its ferromagnetic properties, providing increased write selectivity to the memory array (40).Type: GrantFiled: May 3, 2002Date of Patent: March 9, 2004Assignee: Infineon Technologies AGInventor: Rainer Leuschner
-
Patent number: 6391483Abstract: A device including a magnetic material having a magnetization configuration that is circular in a plane, and a word line for producing a magnetic field in the plane, the magnetic field being radial with respect to a point in the plane and within the circular magnetization configuration.Type: GrantFiled: March 30, 1999Date of Patent: May 21, 2002Assignee: Carnegie Mellon UniversityInventors: Jian-Gang Zhu, Youfeng Zheng, Gary A. Prinz
-
Patent number: 5969978Abstract: A memory architecture for a regular array of non-volatile ferromagnetic rom access annular memory elements which can be based on the giant magnetoresistance (GMR) effect. A first sense row in the array connects the memory elements with strips which are staggered so that each memory element is connected through its upper surface to the memory element on one side and through the lower surface to one on the other side. Running transverse to the first sense row is a word line made up of a series of wires passing in magnetic field producing proximity to the memory elements along a column of the array and not being in electrical contact with the memory elements. The strips of the word line are staggered so they similarly produce a meandering conductive pathway through the word line from one side of the array to the other in series. The wires of the word line can pass through the open core of the annular element or the wires can pass adjacent to the memory elements.Type: GrantFiled: September 30, 1998Date of Patent: October 19, 1999Assignee: The United States of America as represented by the Secretary of the NavyInventor: Gary A. Prinz
-
Patent number: 5757695Abstract: A multi-layer magnetic memory cell is provided, with magnetic vectors aligned along a length of the cell. To align the magnetic end vectors, an ellipsoidal shape is formed at the ends of the memory cell. Magnetic vectors aligned along the length prevent from forming high fields and magnetic poles at the discontinuity or ends of the layers. The memory cell with the ellipsoidal shape shows a constant magnetic resistance of the magnetic cell when a magnetic field is applied to the cell and attains a reduction of power consumption for the magnetic cell.Type: GrantFiled: February 5, 1997Date of Patent: May 26, 1998Assignee: Motorola, Inc.Inventors: Jing Shi, Theodore Zhu, Saied N. Tehrani
-
Patent number: 5748519Abstract: Improved methods for selecting memory cells in magnetic random access memory (MRAM) are provided. Whenever a state in a memory cell is sensed, a MRAM requires to adjust an output of comparator to a zero voltage (auto-zeroing step) before the content of memory cell is detected. This invention sequentially accesses memory cells 29-30 once sense line 25 is selected and auto-zeroed. Accordingly, a higher speed operation is attained because the invention does not require an auto-zeroing step every sensing a memory cell.Type: GrantFiled: December 13, 1996Date of Patent: May 5, 1998Assignee: Motorola, Inc.Inventors: Saied N. Tehrani, Herbert Goronkin
-
Patent number: 5682287Abstract: An integrated circuit breaker is described having shunt trip capability along with automatic overcurrent protection through the circuit breaker trip unit and shunt trip module. The shunt trip module further provides auxiliary power to the trip unit and allows the trip unit microprocessor to report and record the shunt trip operation.Type: GrantFiled: January 16, 1996Date of Patent: October 28, 1997Assignee: General Electric CompanyInventors: John Allen Pollman, Paul Hamilton Singer, Esteban Santos
-
Patent number: 5541868Abstract: A memory element has a sandwich structure in which rings of ferromagnetic material are spaced apart by a layer of a non-magnetic conductor (which is also typically a ring). These ferromagnetic rings will have differing magnetic hardness. At least one ring will be magnetically hard or antiferromagnetically-pinned. At least one other ring will be magnetically softer than the hard or antiferromagnetically-pinned ring. The non-magnetic conductor is at least thick enough to prevent essentially all exchange coupling between the ferromagnetic rings. Conducting leads provide current to pass through the ferromagnetic rings, perpendicular to magnetic moments in the ferromagnetic rings.Type: GrantFiled: February 21, 1995Date of Patent: July 30, 1996Assignee: The United States of America as represented by the Secretary of the NavyInventor: Gary A. Prinz
-
Patent number: 5329486Abstract: A ferromagnetic memory circuit (10) and a ferromagnetic memory device (15) which has a substrate (42). Within the substrate (42), a first current electrode (44) and a second current electrode (46) are formed. A control electrode (50) is formed to control current flow between the first and second current electrodes (44 and 46). A ferromagnetic region (68) is used to store a logic value via magnetic flux. Two conductive layers (62 and 70) and a conductive spacer (78) form a sense conductor for device (15). The sense conductor is used to externally provide the logic value stored in the device (15). A conductive layer (82) forms a program/erase line for altering the logic value stored in the device (15). A logic one or a logic zero is stored in ferromagnetic region (68) depending upon a direction and a magnitude of current flow through conductive layer (82).Type: GrantFiled: July 23, 1993Date of Patent: July 12, 1994Assignee: Motorola, Inc.Inventor: Craig S. Lage