CA1063239A - Magnetic bubble read head for record carrier - Google Patents
Magnetic bubble read head for record carrierInfo
- Publication number
- CA1063239A CA1063239A CA220,709A CA220709A CA1063239A CA 1063239 A CA1063239 A CA 1063239A CA 220709 A CA220709 A CA 220709A CA 1063239 A CA1063239 A CA 1063239A
- Authority
- CA
- Canada
- Prior art keywords
- sheet
- domain
- magnetic
- record carrier
- respect
- 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
Links
- 230000005381 magnetic domain Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 230000005415 magnetization Effects 0.000 claims description 2
- 230000008021 deposition Effects 0.000 abstract 1
- 230000003993 interaction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 241000252073 Anguilliformes Species 0.000 description 1
- 241001137251 Corvidae Species 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 235000015108 pies Nutrition 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/06—Diagnosis, testing or measuring for television systems or their details for recorders
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
-
- 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
-
- 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
-
- 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
- G11B5/49—Fixed mounting or arrangements, e.g. one head per track
- G11B5/4907—Details for scanning
- G11B5/4915—Structure of specially adapted heads
- G11B5/4923—Structure of specially adapted heads in which zones of the transducing part are being physically controllable
- G11B5/493—Control of magnetic properties, e.g. saturation, anisotropy
- G11B5/4938—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films
- G11B5/4946—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films for formation or displacement of magnetic domains, e.g. walls, bubbles
-
- 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
- G11B5/49—Fixed mounting or arrangements, e.g. one head per track
- G11B5/4969—Details for track selection or addressing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
- Magnetic Record Carriers (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7402690A NL7402690A (en) | 1974-02-28 | 1974-02-28 | Storage and reproduction of data - using disc and platelet of magnetisable material with bubble generated in platelet |
| NL7402694A NL7402694A (nl) | 1974-02-28 | 1974-02-28 | Inrichting voor het opslaan en weergeven van informatie. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1063239A true CA1063239A (en) | 1979-09-25 |
Family
ID=26644969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA220,709A Expired CA1063239A (en) | 1974-02-28 | 1975-02-25 | Magnetic bubble read head for record carrier |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS588050B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1063239A (enrdf_load_stackoverflow) |
| DE (1) | DE2506426A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2262850B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1491963A (enrdf_load_stackoverflow) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2362844A1 (de) * | 1973-01-10 | 1974-07-11 | Philips Nv | Vorrichtung zur magnetischen aufzeichnung mit einer magnetischen streifendomaene als eingabe/ausgabekopf |
-
1975
- 1975-02-15 DE DE19752506426 patent/DE2506426A1/de not_active Ceased
- 1975-02-25 JP JP50022490A patent/JPS588050B2/ja not_active Expired
- 1975-02-25 CA CA220,709A patent/CA1063239A/en not_active Expired
- 1975-02-25 GB GB779575A patent/GB1491963A/en not_active Expired
- 1975-02-28 FR FR7506353A patent/FR2262850B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1491963A (en) | 1977-11-16 |
| FR2262850B1 (enrdf_load_stackoverflow) | 1980-03-28 |
| DE2506426A1 (de) | 1975-09-04 |
| JPS50120812A (enrdf_load_stackoverflow) | 1975-09-22 |
| FR2262850A1 (enrdf_load_stackoverflow) | 1975-09-26 |
| JPS588050B2 (ja) | 1983-02-14 |
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