GB8525682D0 - Relational database storage on magnetic & optional disks - Google Patents

Relational database storage on magnetic & optional disks

Info

Publication number
GB8525682D0
GB8525682D0 GB8525682A GB8525682A GB8525682D0 GB 8525682 D0 GB8525682 D0 GB 8525682D0 GB 8525682 A GB8525682 A GB 8525682A GB 8525682 A GB8525682 A GB 8525682A GB 8525682 D0 GB8525682 D0 GB 8525682D0
Authority
GB
United Kingdom
Prior art keywords
magnetic
relational database
database storage
accessed
segments
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.)
Granted
Application number
GB8525682A
Other versions
GB2178569B (en
GB2178569A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Germuska M J
Original Assignee
Germuska M J
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Germuska M J filed Critical Germuska M J
Publication of GB8525682D0 publication Critical patent/GB8525682D0/en
Publication of GB2178569A publication Critical patent/GB2178569A/en
Application granted granted Critical
Publication of GB2178569B publication Critical patent/GB2178569B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • 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
    • G11B20/1252—Formatting, e.g. arrangement of data block or words on the record carriers on discs for discontinuous data, e.g. digital information signals, computer programme data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F2003/0697—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers device management, e.g. handlers, drivers, I/O schedulers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

A disk drive for storing data in a tabular format provides fast access to both rows and columns by superposing a pair (5, 7 Fig. 4) of oscillators upon an overall spiral motion (4) of a head able to access records on the disc, so that segments in a plurality of different tracks may be accessed within one revolution of the disc. Two heads oscillating in antiphase may enable all segments in all tracks to be so accessed (Fig. 5). The data may be stored in such a way that when an element changes, only that element is recorded again and not the record to which it belongs. Write-once-only optical disks may thus be made suitable for storage of live data and not just for archiving. <IMAGE>
GB8525682A 1985-07-27 1985-10-18 Disk data storage system Expired GB2178569B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8519004A GB8519004D0 (en) 1985-07-27 1985-07-27 Computer disk drive

Publications (3)

Publication Number Publication Date
GB8525682D0 true GB8525682D0 (en) 1985-11-20
GB2178569A GB2178569A (en) 1987-02-11
GB2178569B GB2178569B (en) 1989-07-19

Family

ID=10582965

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8519004A Pending GB8519004D0 (en) 1985-07-27 1985-07-27 Computer disk drive
GB8525682A Expired GB2178569B (en) 1985-07-27 1985-10-18 Disk data storage system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8519004A Pending GB8519004D0 (en) 1985-07-27 1985-07-27 Computer disk drive

Country Status (1)

Country Link
GB (2) GB8519004D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003559A1 (en) * 1987-10-07 1989-04-20 Gorbatenko George G Memory spaced array for storing relational data
JPH0268764A (en) * 1988-09-02 1990-03-08 Pioneer Electron Corp Multiple speed reproducing controller for video disk player
US7289285B2 (en) * 2002-10-24 2007-10-30 Charles Frederick James Barnes Information storage systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150173A (en) * 1981-03-12 1982-09-16 Victor Co Of Japan Ltd Reproducer for disc shape information recording medium

Also Published As

Publication number Publication date
GB2178569B (en) 1989-07-19
GB2178569A (en) 1987-02-11
GB8519004D0 (en) 1985-09-04

Similar Documents

Publication Publication Date Title
EP0351470A3 (en) Automatic disk exchange device
GB1446010A (en) Information orecord and reading apparatus therof
FR2581470B1 (en)
DE3750831D1 (en) Device for recording and quickly retrieving video signal sections on a magnetic tape.
RU2008142676A (en) A MEDIA RECORDING STORING AUDIO-VISUAL DATA INCLUDING METADATA, A PLAYBACK AND METHOD FOR SEARCHING AUDIO-VISUAL DATA USING METADATA
MY136902A (en) Apparatus for recording and/or reproducing data with respect to information storage medium
JPS5224027A (en) Record regenerator
DE3775925D1 (en) TURNTABLE WITH MAGAZINE.
GB1512430A (en) Recording and/or reading apparatus for use with a magnetic storage element
GB8525682D0 (en) Relational database storage on magnetic &amp; optional disks
DE69016557D1 (en) Information data recording / reproducing device.
JPS57172552A (en) Reproducing method for stored information
EP0403224A3 (en) Method of reading recorded information from information storage medium with tracks
JPS6414776A (en) Method for processing defective sector in optical data recording/reproducing device
DE69120227D1 (en) Magnetic disk
JPS57113414A (en) Servo disk system
JPS6448282A (en) Storage control method for optical disk
JPS6459597A (en) Information recorder
JPS58122681A (en) Recording medium
JPH0218714A (en) Life control system for optical disk medium
JP2633851B2 (en) Optical information recording / reproducing device
JPS63117373A (en) Optical recording medium
Dulude Optical disk drives make heads spin.
JPS5674881A (en) Memory retrieval system for picture information
JPS6466869A (en) Information recording medium

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee