公开(公告)号：GB2502574A

公开(公告)日：2013-12-04

申请号：GB201209674

申请日：2012-05-31

Applicant: IBM

Inventor： ROTHUIZEN HUGO E ,  DELLMANN LAURENT A ,  ENGELEN JOHAN B C ,  FURRER SIMEON ,  LANTZ MARK ALFRED

IPC: G11B5/265

Abstract: A write head 108 comprises a yoke 110 having at least a first and a second gap 112, 114 and a coil 116 for producing a magnetic field at each gap. The coil comprises a plurality of windings 118, 120 which are arranged to produce the same magnetic field strength at each gap and/or along each gap by use of a proximity effect between the windings and a respective gap. Gaps may be arranged symmetrically about a first line 214 and the windings 209, 209, 213, 213 can be arranged in a pattern symmetrically about a second line 212 where the first and second lines are offset from each other. The distance between neighboring winding portions may vary and the windings may be non-parallel to each other. The write head can be used for writing servo patterns on magnetic tape.

公开(公告)号：BR0206547A

公开(公告)日：2004-03-02

申请号：BR0206547

申请日：2002-01-14

Applicant: IBM

Inventor： FURRER SIMEON ,  MAIWALD DIETRICH ,  SCHOTT WOLFGANG

IPC: H04L12/28

Abstract: Communication device for processing outgoing and incoming packets. The device includes a plurality of signal processing units connected in sequence, each signal processing unit being clocked by a common clock signal. The device further includes a mode line connected to each signal processing unit for switching each signal processing unit between a transmit mode and a receive mode. The device further includes a control line to which each signal processing unit is connected. The control line communicating flow control information either in the transmit mode to at least one of the preceding signal processing units or in the receive mode to at least one of the following signal processing units.

公开(公告)号：AU2002219440A1

公开(公告)日：2002-07-30

申请号：AU2002219440

申请日：2002-01-14

Applicant: IBM

Inventor： MAIWALD DIETRICH ,  FURRER SIMEON ,  SCHOTT WOLFGANG

IPC: H04L12/28 ,  G06F12/08 ,  H04L12/56 ,  G06F9/46

Abstract: Communication device for processing outgoing and incoming packets. The device includes a plurality of signal processing units connected in sequence, each signal processing unit being clocked by a common clock signal. The device further includes a mode line connected to each signal processing unit for switching each signal processing unit between a transmit mode and a receive mode. The device further includes a control line to which each signal processing unit is connected. The control line communicating flow control information either in the transmit mode to at least one of the preceding signal processing units or in the receive mode to at least one of the following signal processing units.

公开(公告)号：DE112018004627T5

公开(公告)日：2020-07-16

申请号：DE112018004627

申请日：2018-10-25

Applicant: IBM

Inventor： TSURUTA KAZUHIRO ,  BUI NHAN XUAN ,  CHERUBINI GIOVANNI ,  FURRER SIMEON ,  LANTZ MARK ALFRED

IPC: G11B5/09

Abstract: Ein auf einem Bandlaufwerk implementiertes Verfahren umfasst Folgendes: Ermitteln einer Servobandkonfiguration von Servobändern auf einem Magnetband, Verwenden von Servo-Leseeinrichtungen auf einem Magnetbandkopf zum Lesen eines oder mehrerer der Servobänder auf Grundlage der ermittelten Servobandkonfiguration und Verwenden von dem einen oder den mehreren der Servobänder gelesener Informationen, um den Magnetbandkopf relativ zu dem Magnetband zu positionieren. Entlang des Magnetbandkopfs ist eine Anordnung aus Datenwandlern positioniert, wobei sich die Anordnung senkrecht zu einer Bewegungsrichtung des Magnetbands erstreckt. Darüber hinaus ist an jedem Ende der Anordnung aus Datenwandlern eine Gruppe der Servo-Leseeinrichtungen positioniert und ist ein Abstand zwischen jeder der unmittelbar benachbarten Servo-Leseeinrichtungen in jeder der Gruppen von Servo-Leseeinrichtungen kleiner als ein oder gleich einem Drittel einer vorgegebenen Breite jedes der Servobänder.

公开(公告)号：BRPI0206547B1

公开(公告)日：2015-11-10

申请号：BR0206547

申请日：2002-01-14

Applicant: IBM

Inventor： MAIWALD DIETRICH ,  FURRER SIMEON ,  SCHOTT WOLFGANG

IPC: H04L12/28

Abstract: "sistema de banda base digital"'. a invenção proporciona um sistema de banda base para um sistema de radiocomunicação de curto alcance. ele está de acordo com a especificação de banda base bluetooth e é bem adequado para uma implementação eficiente de hardware, proporcionando um projeto de subsistema de rádio de baixa potência, pequeno porte e baixo custo. o sistema de banda base compreende uma unidade transceptora e uma unidade de armazenamento temporária, pelo que o sistema tem uma contagem de portas eficiente e um consumo de energia reduzido. o projeto da unidade transceptora está baseado em um processamento de sinal por encadeamento com controle de fluxo de rotas de dados distribuídos. a unidade transceptora processa pacotes de saída e de chegada e compreende uma pluralidade de unidades processadoras de sinais conectadas em seqüência, pelo que cada unidade processadora de sinais é cronometrada por um sinal de relógio comum. uma linha de modo é conectada a cada unidade processadora de sinais para comutar cada unidade processadora de sinais entre um modo de transmissão e um modo de recepção. uma linha de controle à qual cada unidade processadora de sinais é conectada comunica informação de controle de fluxo no modo de transmissão para uma ou mais das unidades processadoras de sinais precedentes ou no modo de recepção para uma ou mais das unidades processadoras de sinais seguintes. a unidade de armazenamento temporário compreende um sistema de armazenamento temporário que aplica um conceito de organização de memória flexível, que leva a uma implementação eficiente de elementos de armazenamentos temporários ou de armazenamento em termos de contagem de portas e consumo de energia e oferece a flexibilidade para alocar memória dinamicamente para pacotes de usuário de comprimento variável. o sistema de armazenamento temporário para armazenar dados da primeira unidade de processamento e da segunda unidade de processamento compreende uma pluralidade de elementos de armazenamento, pelo que cada elemento de armazenamento tem uma primeira unidade de armazenamento e uma segunda unidade de armazenamento. um subsistema de comutação é proporcionado para comutar cada elemento de armazenamento entre os primeiro e segundo modos. no primeiro modo, cada primeira unidade de armazenamento é endereçável pela primeira unidade de processamento e cada segunda unidade de armazenamento é endereçável pela segunda unidade de processamento. no segundo modo, cada segunda unidade de armazenamento é endereçável pela primeira unidade de processamento e cada primeira unidade de armazenamento é endereçável pela segunda unidade de processamento.

公开(公告)号：GB2518677A

公开(公告)日：2015-04-01

申请号：GB201317261

申请日：2013-09-30

Applicant: IBM

Inventor： CHERUBINI GIOVANNI ,  FURRER SIMEON ,  JELITTO JENS ,  LANTZ MARK ALFRED

IPC: G11B5/584

Abstract: A tape storage medium comprises at least one data band comprising a set of data sub-bands DSB1-11 adjacent to each other. Each data sub-band contains a set of data tracks along a longitudinal extension x of the tape and adjacent to each other. Each data sub-band of the set comprises a pair of servo tracks ST1, ST2 for determining positional information. The set of data tracks of each data sub-band is arranged between the servo tracks of the pair. Every N-th data sub-band forms a reference data sub-band having servo patterns SP1, SP2, SP3 that are distinct from each other and the servo tracks of the N-1 data sub-bands arranged between reference data sub-bands have servo patterns SP4, SP5 that are distinct from the servo patterns in the reference data sub-bands. Writing data to the tape includes writing a first data sub-band and a pair of servo tracks adjacent to a preformatted servo band and writing further data sub-bands and pairs of servo tracks adjacent to the previously written data sub-band.

公开(公告)号：GB2513572A

公开(公告)日：2014-11-05

申请号：GB201307697

申请日：2013-04-29

Applicant: IBM

Inventor： ENGELEN JOHAN B C ,  FURRER SIMEON ,  DELLMANN LAURENT A ,  ROTHUIZEN HUGO E ,  LANTZ MARK ALFRED

IPC: G11B15/64

Abstract: A tape head 1 comprises a tape bearing surface 11, shaped to form an air bearing 40, a thermal tape-head distance sensor circuit adapted to sense heat dissipated at the level of the tape bearing surface by the tape and thereby sense a distance d between the tape bearing surface and the tape. A tape-head distance control means 22 controls the bearing surface to tape distance according to a signal received from the tape-head distance sensor circuit. Closed loop feedback control can be used and the tape bearing surface may have non-skiving edges. The tape head to tape distance may be controlled with electrostatic attractors 24. The tape head may include a heater element 16 and heating circuit 13 to provide constant power to the heating circuit. The heating element may also be a resistance temperature detector which is thermally insulated from the tape bearing surface surrounding it by an air gap.

公开(公告)号：GB2508388A

公开(公告)日：2014-06-04

申请号：GB201221556

申请日：2012-11-30

Applicant: IBM

Inventor： CHERUBINI GIOVANNI ,  ENGELEN JOHAN B C ,  FURRER SIMEON ,  JELITTO JENS ,  LANTZ MARK ALFRED

IPC: G11B5/584

Abstract: A tape storage medium comprises a servo band SB along a longitudinal extension x of the tape TP for determining positional information. The servo band comprises a first servo subband SB1 and a second servo subband SB2. The first servo subband comprises a set of servo frames FR, wherein each servo frame FR of the set comprises a first burst A comprising servo stripes SP1 inclined at a first angle α, followed by a second burst B comprising servo stripes SP2 inclined at a second angle β which is different to the first angle. The second servo sub band contains a set of servo tracks ST1-6 arranged next to each other and extending along the tape, wherein each servo track of the set contains a servo pattern of magnetic transitions representing a waveform, where the waveforms of adjacent servo tracks are orthogonal to each other. The servo tracks may have three frequencies f1-f3 that are different from each other.

公开(公告)号：GB2503482A

公开(公告)日：2014-01-01

申请号：GB201211469

申请日：2012-06-28

Applicant: IBM

Inventor： DELLMANN LAURENT A ,  ENGELEN JOHAN B C ,  FURRER SIMEON ,  LANTZ MARK ALFRED ,  ROTHUIZEN HUGO E

IPC: G11B15/62

Abstract: A tape head system comprises a read and/or write head 102 having at least one read and/or write element 104 for reading from and/or writing to magnetic tape 112 and at least one electrostatic element 106, 108 arranged adjacent to the read and/or write element. A controller 122 applies a potential 118, 120 to the at least one electrostatic element. A voltage applied to the electrostatic element may be dynamically controlled to maintain a spacing d1, d2, d3, d4. The voltage may be applied so that the magnetic tape contacts the head along a first section 130 and is spaced apart from the head along a second section 138 by an air bearing 132. The head system may include a tensioning unit 128. The electrostatic elements may be formed metal islands integrated into the head surface.

公开(公告)号：CA2843349A1

公开(公告)日：2012-11-22

申请号：CA2843349

申请日：2012-04-24

Applicant: IBM

Inventor： CIDECIYAN ROY DARON ,  FURRER SIMEON

IPC: G11C7/00

Abstract: A method for writing data to a tape storage medium includes: writing first user data to a first physical region (11) of the tape storage medium (1) in a first write mode, writing second user data to a second physical region (12) of the tape storage medium (1) in a second write mode, wherein the second write mode differs from the first write mode. An apparatus for writing data to a tape storage medium, a tape storage medium, a tape cartridge are also provided.