Patents by Inventor Stefan Buettner
Stefan Buettner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8422313Abstract: In a circuit that reduces power consumption in an array system of memory cells accessible in parallel, a local evaluation circuit is connected to a memory cell and a global bit line of the array system of memory cells. A selection circuitry splits the global bit line into an upper part and a lower part of the global bit line. The selection circuitry is adapted to receive an early set prediction signal and to connect the upper part of the global bit line to the lower part of the global bit line based on the early set prediction signal. The early set prediction signal indicates whether a set of memory cells, which include the memory cell, is being read. The circuit also includes a N:1 multiplexer connected to the lower part of the global bit line to receive the lower part of the global bit line as input.Type: GrantFiled: October 28, 2011Date of Patent: April 16, 2013Assignee: International Business Machines CorporationInventors: Stefan Buettner, David A. Hrusecky, Werner Juchmes, Wolfgang Penth, Rolf Sautter
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Patent number: 8341990Abstract: A method for processing a plate workpiece supported on a workpiece support. The method includes moving a tool die and a tool punch along a stroke axis and toward a processing position above a support plane of the workpiece support. The processing position corresponds to a region of the plate workpiece having a formed shape, which extends upwardly from the support plane of the workpiece support.Type: GrantFiled: October 15, 2009Date of Patent: January 1, 2013Assignee: TRUMPF Werkzeugmaschinen GmbH + Co. KGInventor: Stefan Buettner
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Publication number: 20120155188Abstract: In a circuit that reduces power consumption in an array system of memory cells accessible in parallel, a local evaluation circuit is connected to a memory cell and a global bit line of the array system of memory cells. A selection circuitry splits the global bit line into an upper part and a lower part of the global bit line. The selection circuitry is adapted to receive an early set prediction signal and to connect the upper part of the global bit line to the lower part of the global bit line based on the early set prediction signal. The early set prediction signal indicates whether a set of memory cells, which include the memory cell, is being read. The circuit also includes a N:1 multiplexer connected to the lower part of the global bit line to receive the lower part of the global bit line as input.Type: ApplicationFiled: October 28, 2011Publication date: June 21, 2012Applicant: International Business Machines CorporationInventors: Stefan Buettner, David A. Hrusecky, Werner Juchmes, Wolfgang Penth, Rolf Sautter
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Publication number: 20120067187Abstract: In some aspects of the invention, tool components for processing of plate-like workpieces, the tool component include an end face adjoined by a tool region provided for regrinding, the tool region being configured to undergo regrinding as a result of wear; and at least one identification mark located on the tool component to indicate the amount of shortening of the tool region as a result of regrinding.Type: ApplicationFiled: September 22, 2011Publication date: March 22, 2012Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Stefan Buettner, Wolfgang Laib, Arnim Bruechle
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Publication number: 20120060580Abstract: The invention relates to disc-shaped compensation shims for compensating for the shortening of a tool die or a tool stamp due to regrinding. The shim includes a coding indicating a thickness of the tooling shim, the tooling shim being configured for use with a tool die or tool stamp to compensate for shortening of the tool die or tool stamp resulting from regrinding. The invention also relates to tool arrangements having at least one such shim, and to machine tools having such tool arrangements.Type: ApplicationFiled: September 21, 2011Publication date: March 15, 2012Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Stefan Buettner, Wolfgang Laib
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Publication number: 20120042764Abstract: In some aspects of the invention, a punching tool includes a punching stamp including a stamp shaft and an axial stop; and an adjustment ring having a center opening configured to receive the stamp shaft and abut the axial stop, where a first mark is located along a cylindrical portion of the stamp shaft adjoining the axial stop, and at least a portion of the first mark remains visible when the adjustment ring is abutted against the axial stop.Type: ApplicationFiled: September 22, 2011Publication date: February 23, 2012Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Stefan Buettner, Wolfgang Laib
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Publication number: 20110308362Abstract: A loading and unloading unit for sheet metal providing a first tool holder is provided. Therewith, sheet metal processing tools may be passed from a first tool magazine that is attached to a fixed unit of the loading and unloading unit to a second tool holder integrated in a sheet metal processing machine or to a tool fixture of the sheet metal processing machine, and, thus, the number of tools automatically exchangeable in the sheet metal processing machine can be increased to create a more efficient and space-saving manufacturing process.Type: ApplicationFiled: June 22, 2011Publication date: December 22, 2011Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Stefan Buettner, Stefan Kerscher, Marc Klinkhammer
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Patent number: 7992475Abstract: A plate workpiece processing method includes utilizing one or more cutting devices of a machine tool to perform first and second cutting operations on a plate workpiece. During the first cutting operation, the workpiece is moved relative to cutting device(s) used for the first cutting operation, at least two cut-outs are partially formed in the workpiece with only a common residual connection left that jointly connects the partially formed cut-outs to a remaining portion of the workpiece and that is shortened along one or more cutting lines of the second cutting operation to a size that is larger than a working area of the cutting device(s) used for the second cutting operation. During the second cutting operation, the workpiece is maintained stationary supported by the machine tool, the shortened common residual connection is severed along the cutting line(s) to completely separate the cut-outs from the remaining portion of the workpiece.Type: GrantFiled: April 23, 2009Date of Patent: August 9, 2011Assignee: TRUMPF Werkzeugmaschinen GmbH + Co. KGInventor: Stefan Buettner
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Patent number: 7844871Abstract: A method for testing memory elements of an integrated circuit with an array built in self test (ABIST) comprises providing an ABIST interface to interface between an ABIST engine and a plurality of latches of a memory element under test, providing a multiplex (MUX) stage adjacent a scan input port of each latch, providing functional signal inputs to a data input port of the latches, setting the latches to an ABIST mode by activating an ABIST enable signal and delivering the ABIST enable signal to each of the latches, generating a plurality of ABIST test signals with the ABIST engine, applying the ABIST test signals in parallel to the scan input ports of the latches, determining whether one or more test patterns have been executed, and setting the latches to a normal run mode by deactivating the ABIST enable signal.Type: GrantFiled: November 11, 2008Date of Patent: November 30, 2010Assignee: International Business Machines CorporationInventors: Uwe Brandt, Stefan Buettner, Werner Juchmes, Juergen Pille
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Publication number: 20100139470Abstract: A tool system is provided that has a stamp or punch adapter including eccentrically positioned stamp receptacles. This system permits a simple exchange of tool inserts in the stamp adapter. These tool inserts are also usable in another tool system. The system also permits combining the stamp adapter with a stamp shaft, which can also be used in another tool system. These features permit stamping (and punching) with minimal tooling and retooling efforts.Type: ApplicationFiled: December 10, 2009Publication date: June 10, 2010Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Stefan Buettner, Wolfgang Laib
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Publication number: 20100122128Abstract: A method for testing memory elements of an integrated circuit with an array built in self test (ABIST) comprises providing an ABIST interface to interface between an ABIST engine and a plurality of latches of a memory element under test, providing a multiplex (MUX) stage adjacent a scan input port of each latch, providing functional signal inputs to a data input port of the latches, setting the latches to an ABIST mode by activating an ABIST enable signal and delivering the ABIST enable signal to each of the latches, generating a plurality of ABIST test signals with the ABIST engine, applying the ABIST test signals in parallel to the scan input ports of the latches, determining whether one or more test patterns have been executed, and setting the latches to a normal run mode by deactivating the ABIST enable signal.Type: ApplicationFiled: November 11, 2008Publication date: May 13, 2010Applicant: International Business Machines CorporationInventors: Uwe Brandt, Stefan Buettner, Werner Juchmes, Juergen Pille
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Publication number: 20100095726Abstract: A method for processing a plate workpiece supported on a workpiece support. The method includes moving a tool die and a tool punch along a stroke axis and toward a processing position above a support plane of the workpiece support. The processing position corresponds to a region of the plate workpiece having a formed shape, which extends upwardly from the support plane of the workpiece support.Type: ApplicationFiled: October 15, 2009Publication date: April 22, 2010Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventor: Stefan Buettner
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Publication number: 20100095815Abstract: A machine tool that includes a workpiece support and a punching die. The punching die includes a support surface, for supporting a workpiece to be processed, and a discharging slope. The discharging slope is configured such that a workpiece part, severed from a workpiece supported on the support surface of the punching die, is displaced, in at least one of a rotational, tilting, or linear movement, from a processing position at least partially overlying the discharging slope toward a removal position on the discharging slope. The discharging slope is also configured such that a workpiece part, severed from a workpiece supported on the support surface of the punching die, is directed, in a sliding movement, toward a discharging position located beneath the support surface and adjacent the punching die.Type: ApplicationFiled: October 20, 2009Publication date: April 22, 2010Applicant: TRUMPF WERKZEUGMASCHINEN GMBH + CO. KGInventors: Wolfgang Laib, Eric Schneider, Stefan Buettner
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Publication number: 20090223334Abstract: A plate workpiece processing method for obtaining at least two workpiece cut-outs from a plate workpiece. The method includes utilizing one or more cutting devices of a machine tool to perform a first cutting operation and a second cutting operation on a plate workpiece. During the first cutting operation, with the plate workpiece moving relative to the cutting device or cutting devices used for the first cutting operation, at least two workpiece cut-outs are partially formed in the plate workpiece with only a common residual connection being left that jointly connects the partially formed workpiece cut-outs to a remaining portion of the plate workpiece and that is shortened along one or more cutting lines of the second cutting operation to a size that fits within a working area of the cutting device or cutting devices used for the second cutting operation.Type: ApplicationFiled: April 23, 2009Publication date: September 10, 2009Applicant: TRUMPF Werkzeugmaschinen GmbH + Co. KGInventor: Stefan Buettner
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Patent number: 7495949Abstract: An asymmetrical random access memory cell (1) including cross coupled inverters (2, 3) which are driven at their nodes (22, 32) by separate bit-lines (blt, blc) of a pair of complementary bit-lines, which are connected via a pass-transistors (21, 31), wherein said cross coupled inverters (2, 3) have different switching thresholds and exhibit asymmetrical physical behaviours, wherein an additional pass-transistor (4) is provided in series to one of the pass-transistors (21) between one of the nodes (22) and its dedicated bit-line (blc). Further the invention relates to a random access memory including such memory cells and to a method of operating such a memory.Type: GrantFiled: January 31, 2007Date of Patent: February 24, 2009Assignee: International Business Machines CorporationInventors: Stefan Buettner, Torsten Mahnke, Wolfgang Penth, Otto Wagner
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Publication number: 20080080259Abstract: A method and memory circuit comprising a plurality of cells accessible by word lines and bit lines is described, wherein each cell includes a group of six transistors adapted to both store a bit inserted into the cell during a write operation and affect a signal asserted during a read operation on a bit line coupled to the cell such that the affected signal matches a value of the bit stored in the cell, wherein the word lines and bit lines of the memory are divided into sections assigned to groups of equal numbers of cells, wherein said sections are individually accessible for read or write operations such that one cell of a group can be read simultaneously while writing another cell of the group.Type: ApplicationFiled: September 27, 2007Publication date: April 3, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Stefan Buettner, Juergen Pille, Otto Wagner, Dieter Wendel
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Publication number: 20070189061Abstract: Asymmetrical random access memory cell, memory comprising asymmetrical memory cells and method to operate such a memory The invention relates to an asymmetrical random access memory cell (1) comprising cross coupled inverters (2, 3) which are driven at their nodes (22, 32) by separate bit-lines (b1t, b1c) of a pair of complementary bit-lines, which are connected via a pass-transistors (21, 31), wherein said cross coupled inverters (2, 3) have different switching thresholds and exhibit asymmetrical physical behaviours, wherein an additional pass-transistor (4) is provided in series to one of the pass-transistors (21) between one of the nodes (22) and its dedicated bit-line (blc). Further the invention relates to a random access memory comprising such memory cells and to a method of operating such a memory.Type: ApplicationFiled: January 31, 2007Publication date: August 16, 2007Inventors: Stefan Buettner, Torsten Mahnke, Wolfgang Penth, Otto Wagner
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Patent number: 6977863Abstract: A method and a device for decoding an address word into word-line signals. A plurality of address lines feed the address word into a plurality of decoding blocks each associated to a particular address in the address space formed by the address word for generating a respective word-line signals, whereby each of the decoding blocks is connected to the plurality of address lines. At least one decoding block associated to a predetermined address in the address space formed by the address word is omitted, so that none of the generated word lines is switched to the active state, whenever the predetermined address word is inputted over the plurality of address lines.Type: GrantFiled: February 4, 2005Date of Patent: December 20, 2005Assignee: International Business Machines CorporationInventors: Stefan Buettner, Jens Leenstra, Juergen Pille, Christian Schweizer
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Publication number: 20050128845Abstract: A method and a device for decoding an address word into word-line signals. A plurality of address lines feed the address word into a plurality of decoding blocks each associated to a particular address in the address space formed by the address word for generating a respective word-line signals, whereby each of the decoding blocks is connected to the plurality of address lines. At least one decoding block associated to a predetermined address in the address space formed by the address word is omitted, so that none of the generated word lines is switched to the active state, whenever the predetermined address word is inputted over the plurality of address lines.Type: ApplicationFiled: February 4, 2005Publication date: June 16, 2005Applicant: International Business Machines CorporationInventors: Stefan Buettner, Jens Leenstra, Juergen Pille, Christian Schweizer
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Patent number: 6873567Abstract: A method and a device for decoding an address word into word-line signals. A plurality of address lines feed the address word into a plurality of decoding blocks each associated to a particular address in the address space formed by the address word for generating a respective word-line signals, whereby each of the decoding blocks is connected to the plurality of address lines. At least one decoding block associated to a predetermined address in the address space formed by the address word is omitted, so that none of the generated word lines is switched to the active state, whenever the predetermined address word is inputted over the plurality of address lines.Type: GrantFiled: August 7, 2003Date of Patent: March 29, 2005Assignee: International Business Machines CorporationInventors: Stefan Buettner, Jens Leenstra, Juergen Pille, Christian Schweizer