TWI341520B - Apparatus and method to read information from a tape storage medium - Google Patents
Apparatus and method to read information from a tape storage mediumInfo
- Publication number
- TWI341520B TWI341520B TW093129385A TW93129385A TWI341520B TW I341520 B TWI341520 B TW I341520B TW 093129385 A TW093129385 A TW 093129385A TW 93129385 A TW93129385 A TW 93129385A TW I341520 B TWI341520 B TW I341520B
- Authority
- TW
- Taiwan
- Prior art keywords
- storage medium
- read information
- tape storage
- tape
- read
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/002—Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
- G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/40—Combinations of multiple record carriers
- G11B2220/41—Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/683,519 US6987633B2 (en) | 2003-10-10 | 2003-10-10 | Apparatus and method to read information from a tape storage medium |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200521996A TW200521996A (en) | 2005-07-01 |
TWI341520B true TWI341520B (en) | 2011-05-01 |
Family
ID=34422751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW093129385A TWI341520B (en) | 2003-10-10 | 2004-09-29 | Apparatus and method to read information from a tape storage medium |
Country Status (4)
Country | Link |
---|---|
US (1) | US6987633B2 (zh) |
JP (1) | JP4117280B2 (zh) |
CN (1) | CN1273956C (zh) |
TW (1) | TWI341520B (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8040994B1 (en) * | 2007-03-19 | 2011-10-18 | Seagate Technology Llc | Phase coefficient generation for PLL |
US8559129B2 (en) * | 2008-10-01 | 2013-10-15 | International Business Machines Corporation | Pass-through accessor comprising a fixturing apparatus for storing a plurality of portable data storage cassettes |
US8331055B2 (en) * | 2009-07-09 | 2012-12-11 | International Business Machines Corporation | Control method and apparatus for a dual-channel weighted LPOS combining scheme |
EP2502393B1 (en) * | 2010-09-02 | 2015-07-01 | Huawei Technologies Co., Ltd. | Phase offset compensator |
US8405925B2 (en) * | 2011-06-01 | 2013-03-26 | International Business Machines Corporation | Track-dependent data randomization mitigating false VFO detection |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909735A (en) * | 1974-04-04 | 1975-09-30 | Ncr Co | Slow switch for bandwidth change in phase-locked loop |
US4007429A (en) * | 1976-01-19 | 1977-02-08 | Gte International Incorporated | Phase-locked loop having a switched lowpass filter |
US4636736A (en) * | 1981-10-13 | 1987-01-13 | Microdyne Corporation | Variable phase signal demodulator |
US4613825A (en) * | 1984-12-20 | 1986-09-23 | Motorola, Inc. | Rapid acquisition, tracking PLL with fast and slow sweep speeds |
US4855689A (en) * | 1987-02-13 | 1989-08-08 | Hughes Aircraft Company | Phase lock loop with switchable filter for acquisition and tracking modes |
US4928075A (en) * | 1989-06-26 | 1990-05-22 | Digital Equipment Corporation | Multiple bandwidth filter system for phase locked loop |
US5442315A (en) * | 1993-07-27 | 1995-08-15 | International Business Machines Corporation | Bit stream rate asynchronous digital phase-locked loop |
US6246733B1 (en) * | 1998-05-20 | 2001-06-12 | International Business Machines Corporation | Synchronous interface for asynchronous data detection channels |
JP2999759B1 (ja) * | 1998-10-13 | 2000-01-17 | 松下電器産業株式会社 | デジタル再生信号処理装置 |
US6816328B2 (en) * | 2000-06-20 | 2004-11-09 | Infineon Technologies North America Corp. | Pseudo-synchronous interpolated timing recovery for a sampled amplitude read channel |
US6538518B1 (en) * | 2000-12-26 | 2003-03-25 | Juniper Networks, Inc. | Multi-loop phase lock loop for controlling jitter in a high frequency redundant system |
US7019922B2 (en) * | 2003-04-29 | 2006-03-28 | International Business Machines Corporation | Apparatus and method to read information from a tape storage medium |
-
2003
- 2003-10-10 US US10/683,519 patent/US6987633B2/en not_active Expired - Fee Related
-
2004
- 2004-09-29 TW TW093129385A patent/TWI341520B/zh not_active IP Right Cessation
- 2004-10-04 JP JP2004291055A patent/JP4117280B2/ja not_active Expired - Fee Related
- 2004-10-09 CN CN200410083520.XA patent/CN1273956C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP4117280B2 (ja) | 2008-07-16 |
US6987633B2 (en) | 2006-01-17 |
US20050078398A1 (en) | 2005-04-14 |
TW200521996A (en) | 2005-07-01 |
CN1273956C (zh) | 2006-09-06 |
JP2005116158A (ja) | 2005-04-28 |
CN1606063A (zh) | 2005-04-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |