JPS6236482U - - Google Patents
Info
- Publication number
- JPS6236482U JPS6236482U JP1985128571U JP12857185U JPS6236482U JP S6236482 U JPS6236482 U JP S6236482U JP 1985128571 U JP1985128571 U JP 1985128571U JP 12857185 U JP12857185 U JP 12857185U JP S6236482 U JPS6236482 U JP S6236482U
- Authority
- JP
- Japan
- Prior art keywords
- reversible counter
- output signal
- control device
- controlled oscillator
- voltage controlled
- 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.)
- Pending
Links
- 230000002441 reversible effect Effects 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
Classifications
-
- 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
-
- 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
- G11B5/54—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 into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
- G11B5/553—Details
- G11B5/5547—"Seek" control and circuits therefor
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
- Control Of Position Or Direction (AREA)
- Control Of Stepping Motors (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985128571U JPS6236482U (US20100012521A1-20100121-C00001.png) | 1985-08-23 | 1985-08-23 | |
| US06/899,812 US4797757A (en) | 1985-08-23 | 1986-08-25 | Servo head positioner with pulse adjusting circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985128571U JPS6236482U (US20100012521A1-20100121-C00001.png) | 1985-08-23 | 1985-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6236482U true JPS6236482U (US20100012521A1-20100121-C00001.png) | 1987-03-04 |
Family
ID=14988046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985128571U Pending JPS6236482U (US20100012521A1-20100121-C00001.png) | 1985-08-23 | 1985-08-23 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4797757A (US20100012521A1-20100121-C00001.png) |
| JP (1) | JPS6236482U (US20100012521A1-20100121-C00001.png) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933786A (en) * | 1988-09-21 | 1990-06-12 | Maxtor Corporation | Fault tolerant index patterns and decoding means |
| NO922249L (no) * | 1991-06-07 | 1992-12-08 | Minnesota Mining & Mfg | Flerspors servo-opptakshode, resulterende medium som inneholder forhaandsregistrert servospor samt servostyrt hodeposisjoneringssystem |
| US5418670A (en) * | 1991-07-29 | 1995-05-23 | Eastman Kodak Company | Magnetic recording medium having a servo pattern of the intermittent type with compensation for suppressing self-generated residual fields |
| KR970010638B1 (ko) * | 1994-05-11 | 1997-06-28 | 삼성전자 주식회사 | 서보 어드레스 마크 검출 보상 회로 |
| KR100194027B1 (ko) * | 1996-02-22 | 1999-06-15 | 윤종용 | 섹터 펄스 생성방법과 회로 |
| KR101417197B1 (ko) * | 2010-11-30 | 2014-07-08 | 엘에스산전 주식회사 | Ｐｌｃ 위치 결정 장치 및 방법과 이를 이용한 ｐｌｃ 시스템 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3201781A (en) * | 1962-07-23 | 1965-08-17 | Hewlett Packard Co | Analog to digital transducers |
| US3868677A (en) * | 1972-06-21 | 1975-02-25 | Gen Electric | Phase-locked voltage-to-digital converter |
| GB2039078B (en) * | 1978-12-27 | 1982-11-24 | Ibm | Sampled data servo positioning system |
| US4414586A (en) * | 1980-10-07 | 1983-11-08 | Victor Company Of Japan, Ltd. | Pilot signal recording and reproducing system |
| US4462053A (en) * | 1981-07-02 | 1984-07-24 | Irwin International, Inc. | Method for controlling a disc head |
| US4542428A (en) * | 1982-10-01 | 1985-09-17 | Matsushita Electric Industrial Co., Ltd. | Disk for measuring off-track quantity of magnetic head, and measuring apparatus using the disk |
| US4516162A (en) * | 1983-04-21 | 1985-05-07 | Magnetic Peripherals Inc. | Method for verifying servo data |
| US4586094A (en) * | 1984-03-13 | 1986-04-29 | Irwin Magnetic Systems, Inc. | Method and apparatus for pre-recording tracking information on magnetic media |
| US4530019A (en) * | 1984-06-04 | 1985-07-16 | Dma Systems | Servo pattern |
-
1985
- 1985-08-23 JP JP1985128571U patent/JPS6236482U/ja active Pending
-
1986
- 1986-08-25 US US06/899,812 patent/US4797757A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US4797757A (en) | 1989-01-10 |
