DE69620354T2 - Lesekanal für eine Magnetplatte mit Amplitudenabtastung mit interpolierender Rückgewinnung des Zeittaktes zur synchronen Erfassung von eingebetteten Servodaten - Google Patents
Lesekanal für eine Magnetplatte mit Amplitudenabtastung mit interpolierender Rückgewinnung des Zeittaktes zur synchronen Erfassung von eingebetteten ServodatenInfo
- Publication number
- DE69620354T2 DE69620354T2 DE69620354T DE69620354T DE69620354T2 DE 69620354 T2 DE69620354 T2 DE 69620354T2 DE 69620354 T DE69620354 T DE 69620354T DE 69620354 T DE69620354 T DE 69620354T DE 69620354 T2 DE69620354 T2 DE 69620354T2
- Authority
- DE
- Germany
- Prior art keywords
- data
- clock
- discrete time
- read
- generates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
- H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
- H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal
-
- 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
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
-
- 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
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
-
- 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
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
- G11B20/10064—EEPR4 or E2PR4, i.e. extended partial response class 4, polynomial (1-D)*(1+D)3
-
- 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
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
- G11B20/10074—EPR4, i.e. extended partial response class 4, polynomial (1-D) *(1+D)2
-
- 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
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/09—Digital recording
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
- H04L7/0062—Detection of the synchronisation error by features other than the received signal transition detection of error based on data decision error, e.g. Mueller type detection
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
-
- 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
- G11B2020/1087—Digital recording or reproducing wherein a selection is made among at least two alternative ways of processing
- G11B2020/10888—Digital recording or reproducing wherein a selection is made among at least two alternative ways of processing the kind of data being the selection criterion
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1232—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc sector, i.e. the minimal addressable physical data unit
- G11B2020/1234—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc sector, i.e. the minimal addressable physical data unit wherein the sector is a headerless sector, i.e. it does not comprise an ID field
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1281—Servo information
- G11B2020/1282—Servo information in embedded servo fields
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L2007/047—Speed or phase control by synchronisation signals using special codes as synchronising signal using a sine signal or unmodulated carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0004—Initialisation of the receiver
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/567,681 US5726818A (en) | 1995-12-05 | 1995-12-05 | Magnetic disk sampled amplitude read channel employing interpolated timing recovery for synchronous detection of embedded servo data |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69620354D1 DE69620354D1 (de) | 2002-05-08 |
DE69620354T2 true DE69620354T2 (de) | 2002-11-21 |
Family
ID=24268198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69620354T Expired - Lifetime DE69620354T2 (de) | 1995-12-05 | 1996-12-02 | Lesekanal für eine Magnetplatte mit Amplitudenabtastung mit interpolierender Rückgewinnung des Zeittaktes zur synchronen Erfassung von eingebetteten Servodaten |
Country Status (4)
Country | Link |
---|---|
US (1) | US5726818A (de) |
EP (1) | EP0777211B1 (de) |
JP (1) | JP3164519B2 (de) |
DE (1) | DE69620354T2 (de) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5835295A (en) * | 1996-11-18 | 1998-11-10 | Cirrus Logice, Inc. | Zero phase restart interpolated timing recovery in a sampled amplitude read channel |
US5901010A (en) * | 1997-02-07 | 1999-05-04 | Cirrus Logic, Inc. | Magnetic disc recording system employing two stage actuators for simultaneous accesses through multiple recording heads |
US5862157A (en) * | 1997-02-24 | 1999-01-19 | Texas Instruments Incorporated | Method and circuitry for monitoring a digital channel |
US6032284A (en) * | 1997-03-12 | 2000-02-29 | Cirrus Logic, Inc. | Trellis coding system for disc storage systems |
KR100400533B1 (ko) * | 1997-06-13 | 2003-10-08 | 시게이트 테크놀로지 엘엘씨 | 온도 종속 디스크 드라이브의 파라미터적 구성 |
US6266203B1 (en) * | 1997-06-13 | 2001-07-24 | Seagate Technology Llc | Integrated temperature sense circuit in a disc drive |
US6111710A (en) * | 1997-06-25 | 2000-08-29 | Cirrus Logic, Inc. | Asynchronous/synchronous gain control for interpolated timing recovery in a sampled amplitude read channel |
KR100244767B1 (ko) * | 1997-06-25 | 2000-02-15 | 전주범 | 디지탈 자기 기록/재생 시스템의 선택적 동기/비동기 부분 응답 채널 데이터 검출 장치 |
KR100244770B1 (ko) * | 1997-06-30 | 2000-02-15 | 전주범 | 디지탈 자기 기록/재생 시스템의 보간 필터 |
JP2000123491A (ja) | 1998-10-14 | 2000-04-28 | Alps Electric Co Ltd | 磁気ディスク装置 |
US6487672B1 (en) | 1998-12-24 | 2002-11-26 | Stmicroelectronics, N.V. | Digital timing recovery using baud rate sampling |
US6591283B1 (en) * | 1998-12-24 | 2003-07-08 | Stmicroelectronics N.V. | Efficient interpolator for high speed timing recovery |
US6307694B1 (en) | 1999-02-24 | 2001-10-23 | Cirrus Logic, Inc. | Error signal biasing for an adaptive filter in a disk drive read channel |
US6549354B1 (en) | 1999-04-16 | 2003-04-15 | Infineon Technologies North America Corp. | Acquisition signal error estimator |
US6657802B1 (en) | 1999-04-16 | 2003-12-02 | Infineon Technologies Corporation | Phase assisted synchronization detector |
US6560059B1 (en) | 1999-05-07 | 2003-05-06 | Seagate Technology Llc | Method and apparatus for suppressing seek-induced vibration in a disc drive |
US6549351B1 (en) | 1999-06-22 | 2003-04-15 | Cirrus Logic, Inc. | Auxiliary data encoding in a disk drive system |
US6594217B1 (en) | 1999-06-22 | 2003-07-15 | Cirrus Logic, Inc. | Servo synch mark processing in a disk drive system |
US6408419B1 (en) | 1999-07-01 | 2002-06-18 | Infineon Technologies North America Corp. | Trellis code for extended partial response maximum likelihood (EPRML) channel |
US6381085B1 (en) | 1999-07-12 | 2002-04-30 | Cirrus Logic, Inc. | Zero forcing adaptive equalization in a disk drive read channel |
US6396788B1 (en) | 1999-07-13 | 2002-05-28 | Cirrus Logic, Inc. | Re-timing and up-sampling a sub-sampled user data signal from in an optical disk |
US6510015B2 (en) | 1999-12-10 | 2003-01-21 | Seagate Technology Llc | Magnetic disc having physical servo patterns with a magnetic carrier, and method of making and using the same |
US6600615B1 (en) | 2000-02-02 | 2003-07-29 | Infineon Technologies North America Corp. | Synchronous timing for interpolated timing recovery |
US6493403B1 (en) | 2000-02-02 | 2002-12-10 | Infineon Technologies North America Corp. | Asynchronous timing for interpolated timing recovery |
US6493163B1 (en) | 2000-03-03 | 2002-12-10 | Cirrus Logic, Inc. | Increased lock range PLL for constrained data |
US6707627B1 (en) | 2000-03-03 | 2004-03-16 | Cirrus Logic, Inc. | Error checking in a disk drive system using a modulo code |
US6614609B1 (en) | 2000-03-08 | 2003-09-02 | Cirrus Logic, Inc. | Gray code detection for a disk drive system |
US6680807B1 (en) | 2000-03-08 | 2004-01-20 | Cirrus Logic, Inc. | Servo mark detection for a disk drive system |
DE10024267A1 (de) * | 2000-05-17 | 2001-11-29 | Bosch Gmbh Robert | Rundfunkempfänger für den Empfang von digitalen Rundfunksignalen und Verfahren zum Empfang von digitalen Rundfunksignalen |
US6816328B2 (en) | 2000-06-20 | 2004-11-09 | Infineon Technologies North America Corp. | Pseudo-synchronous interpolated timing recovery for a sampled amplitude read channel |
US6747838B2 (en) | 2001-02-15 | 2004-06-08 | Seagate Technology Llc | Thermal performance of an integrated amplifier in a disc drive |
US6731453B2 (en) | 2001-02-15 | 2004-05-04 | Seagate Technology Llc | Optimizing thermal performance of an integrated circuit in a disc drive |
US7286313B2 (en) * | 2004-05-26 | 2007-10-23 | Seagate Technology, Llc | Correcting radial incoherence in servo track sensing |
US7196644B1 (en) | 2004-07-01 | 2007-03-27 | Seagate Technology Llc | Decoupling of analog input and digital output |
EP1622300A1 (de) | 2004-07-30 | 2006-02-01 | STMicroelectronics S.r.l. | Verfahren zur Verbesserung der Robustheit des Synchronisierungssystems im Festplattenlaufwerk durch eine minimale Latenzschleife |
US7616395B2 (en) * | 2004-08-20 | 2009-11-10 | Panasonic Corporation | Information reproduction apparatus |
US7564931B2 (en) * | 2005-05-10 | 2009-07-21 | Seagate Technology Llc | Robust maximum-likelihood based timing recovery |
US7245450B1 (en) * | 2006-01-26 | 2007-07-17 | International Business Machines Corporation | Synchronous servo channel for longitudinal position detection and position error signal generation in tape drive systems |
US7365929B2 (en) * | 2006-07-30 | 2008-04-29 | International Business Machines Corporation | Synchronous servo channel for tape drive systems |
US7643235B2 (en) | 2006-09-28 | 2010-01-05 | Seagate Technology Llc | Synchronization for data communication |
US7715138B1 (en) * | 2007-11-20 | 2010-05-11 | Western Digital Technologies, Inc. | Disk drive estimating a servo zone after synchronously detecting a servo sync mark |
US8116024B2 (en) * | 2009-08-10 | 2012-02-14 | Seagate Technology Llc | Timing recovery detector |
US8237597B2 (en) * | 2010-09-21 | 2012-08-07 | Lsi Corporation | Systems and methods for semi-independent loop processing |
JP5776657B2 (ja) | 2012-09-18 | 2015-09-09 | 株式会社デンソー | 受信回路 |
US9819456B1 (en) | 2016-10-17 | 2017-11-14 | Seagate Technology Llc | Preamble detection and frequency offset determination |
US10164760B1 (en) | 2016-10-18 | 2018-12-25 | Seagate Technology Llc | Timing excursion recovery |
US10152457B1 (en) | 2016-10-25 | 2018-12-11 | Seagate Technology Llc | Target parameter adaptation |
US10277718B1 (en) | 2016-11-22 | 2019-04-30 | Seagate Technology Llc | Preamble defect detection and mitigation |
US10084553B1 (en) | 2016-12-22 | 2018-09-25 | Seagate Technology Llc | Iterative recovery from baseline or timing disturbances |
US9954537B1 (en) | 2016-12-23 | 2018-04-24 | Seagate Technology Llc | Wide frequency range clock generation with phase interpolation |
US9979573B1 (en) | 2016-12-23 | 2018-05-22 | Seagate Technology Llc | Position error signal burst demodulation |
US9998136B1 (en) | 2017-02-17 | 2018-06-12 | Seagate Technology Llc | Loop consistency using multiple channel estimates |
US10382166B1 (en) | 2017-02-22 | 2019-08-13 | Seagate Technology Llc | Constrained receiver parameter optimization |
US9935810B1 (en) * | 2017-03-07 | 2018-04-03 | Xilinx, Inc. | Method and apparatus for model identification and predistortion |
US9928854B1 (en) | 2017-05-03 | 2018-03-27 | Seagate Technology Llc | MISO equalization with ADC averaging |
CN112583571A (zh) * | 2019-09-30 | 2021-03-30 | 深圳市中兴微电子技术有限公司 | 一种信号的采样方法及装置 |
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US4866647A (en) * | 1988-02-04 | 1989-09-12 | American Telephone And Telegraph Company | Continuously variable digital delay circuit |
US5177734A (en) * | 1988-05-02 | 1993-01-05 | Itt Corporation | Multirate wire line modem apparatus |
US5127051A (en) * | 1988-06-13 | 1992-06-30 | Itt Corporation | Adaptive modem for varying communication channel |
US5235534A (en) * | 1988-08-18 | 1993-08-10 | Hewlett-Packard Company | Method and apparatus for interpolating between data samples |
US5241433A (en) | 1990-04-17 | 1993-08-31 | International Business Machines Corporation | Disk drive servo control |
JP3255179B2 (ja) * | 1992-02-14 | 2002-02-12 | ソニー株式会社 | データ検出装置 |
US5291499A (en) | 1992-03-16 | 1994-03-01 | Cirrus Logic, Inc. | Method and apparatus for reduced-complexity viterbi-type sequence detectors |
US5329554A (en) | 1992-05-08 | 1994-07-12 | Cirrus Logic, Inc. | Digital pulse detector |
US5255131A (en) * | 1992-08-13 | 1993-10-19 | International Business Machines Corporation | Asynchronous servo identification/address mark detection for PRML disk drive ssytem |
US5311178A (en) * | 1992-08-14 | 1994-05-10 | Silicon Systems, Inc. | Method for processing sample values in an RLL channel |
US5341249A (en) * | 1992-08-27 | 1994-08-23 | Quantum Corporation | Disk drive using PRML class IV sampling data detection with digital adaptive equalization |
US5258933A (en) * | 1992-08-27 | 1993-11-02 | Quantum Corporation | Timing control for PRML class IV sampling data detection channel |
US5321559A (en) * | 1992-08-27 | 1994-06-14 | Quantum Corporation | Asynchronous peak detection of information embedded within PRML class IV sampling data detection channel |
US5309484A (en) * | 1992-09-01 | 1994-05-03 | Motorola, Inc. | Method and apparatus for asynchronous timing recovery using interpolation filter |
US5359631A (en) * | 1992-09-30 | 1994-10-25 | Cirrus Logic, Inc. | Timing recovery circuit for synchronous waveform sampling |
US5295128A (en) * | 1992-10-28 | 1994-03-15 | International Business Machines Corporation | Clock controller employing a discrete time control loop method for clocking data in an asynchronous channel |
US5293369A (en) * | 1992-10-28 | 1994-03-08 | International Business Machines Corporation | Asynchronous sampling digital detector system for magnetic and optical recording channels |
JPH0828702B2 (ja) * | 1992-11-25 | 1996-03-21 | 日本電気株式会社 | クロック再生器 |
US5315284A (en) * | 1992-12-23 | 1994-05-24 | International Business Machines Corporation | Asynchronous digital threshold detector for a digital data storage channel |
US5343340A (en) * | 1992-12-31 | 1994-08-30 | International Business Machines Corporation | Digital servo signal demodulation method and apparatus utilizing a partial-response maximum-likelihood (PRML) channel in a disk file |
US5297184A (en) | 1993-02-01 | 1994-03-22 | Cirrus Logic, Inc. | Gain control circuit for synchronous waveform sampling |
US5424881A (en) | 1993-02-01 | 1995-06-13 | Cirrus Logic, Inc. | Synchronous read channel |
JPH06309809A (ja) * | 1993-04-27 | 1994-11-04 | Pioneer Electron Corp | ディジタル信号再生装置 |
US5384671A (en) * | 1993-12-23 | 1995-01-24 | Quantum Corporation | PRML sampled data channel synchronous servo detector |
US5459757A (en) * | 1994-09-21 | 1995-10-17 | Seagate Technology, Inc. | Timing and gain control circuit for a PRML read channel |
-
1995
- 1995-12-05 US US08/567,681 patent/US5726818A/en not_active Expired - Lifetime
-
1996
- 1996-12-02 DE DE69620354T patent/DE69620354T2/de not_active Expired - Lifetime
- 1996-12-02 EP EP96119296A patent/EP0777211B1/de not_active Expired - Lifetime
- 1996-12-05 JP JP32576996A patent/JP3164519B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5726818A (en) | 1998-03-10 |
EP0777211A3 (de) | 1998-08-19 |
DE69620354D1 (de) | 2002-05-08 |
JP3164519B2 (ja) | 2001-05-08 |
EP0777211B1 (de) | 2002-04-03 |
EP0777211A2 (de) | 1997-06-04 |
JPH09204622A (ja) | 1997-08-05 |
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