NO120958B - - Google Patents
Download PDFInfo
- Publication number
- NO120958B NO120958B NO1102/68A NO110268A NO120958B NO 120958 B NO120958 B NO 120958B NO 1102/68 A NO1102/68 A NO 1102/68A NO 110268 A NO110268 A NO 110268A NO 120958 B NO120958 B NO 120958B
- Authority
- NO
- Norway
- Prior art keywords
- recording
- amplitude
- waveform
- pulses
- pulse
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 description 64
- 230000000694 effects Effects 0.000 description 14
- 238000001514 detection method Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 7
- 238000012937 correction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000012217 deletion Methods 0.000 description 3
- 230000037430 deletion Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 206010020675 Hypermetropia Diseases 0.000 description 1
- 101100246029 Mus musculus Ptpn2 gene Proteins 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- G11B20/10194—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using predistortion during writing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Magnetic Recording (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62508867A | 1967-03-22 | 1967-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO120958B true NO120958B (nl) | 1970-12-28 |
Family
ID=24504533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO1102/68A NO120958B (nl) | 1967-03-22 | 1968-03-21 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3503059A (nl) |
| AT (1) | AT283781B (nl) |
| BE (1) | BE710510A (nl) |
| CH (1) | CH462249A (nl) |
| DK (1) | DK130698B (nl) |
| ES (1) | ES351840A1 (nl) |
| FI (1) | FI49759C (nl) |
| FR (1) | FR1554196A (nl) |
| GB (1) | GB1175172A (nl) |
| NL (1) | NL160411C (nl) |
| NO (1) | NO120958B (nl) |
| SE (1) | SE350636B (nl) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597751A (en) * | 1969-04-21 | 1971-08-03 | Ibm | Signal recovery system for use with magnetic media |
| US3665485A (en) * | 1969-06-11 | 1972-05-23 | Petter Instr Co Inc | Method and system for high density recording of information on premagnetized magnetic tape |
| US3623040A (en) * | 1969-06-25 | 1971-11-23 | Scient Data Systems Inc | Digital decoding of reproduced signals |
| NL160963C (nl) * | 1969-07-09 | Burroughs Corp | Stelsel voor magnetische registratie en reproduktie. | |
| US3618119A (en) * | 1970-03-13 | 1971-11-02 | Storage Technology Corp | Compensation in a magentic write circuit |
| US3852810A (en) * | 1972-03-17 | 1974-12-03 | Gen Instrument Corp | Self-clocking nrz recording and reproduction system |
| US3911485A (en) * | 1972-03-17 | 1975-10-07 | Gen Instrument Corp | Self-clocking NRZ recording and reproduction system |
| US3947878A (en) * | 1972-03-17 | 1976-03-30 | General Instrument Corporation | Self-clocking NRZ recording and reproduction system |
| US3789377A (en) * | 1972-05-26 | 1974-01-29 | Lockheed Electronics Co | Pseudo-random sequence synchronization for magnetic recording system |
| US3831194A (en) * | 1973-07-19 | 1974-08-20 | Honeywell Inf Systems | Digital data recovery system with circuitry which corrects for peak shifting |
| US4167761A (en) * | 1978-04-03 | 1979-09-11 | Sperry Rand Corporation | Precedent and subsequent minor transitions to alleviate pulse crowding |
| US4202017A (en) * | 1978-05-08 | 1980-05-06 | Sperry Rand Corporation | Magnetic recording signal equalization apparatus |
| DE2832719A1 (de) * | 1978-07-26 | 1980-02-07 | Basf Ag | Anordnung zur kompensation von ungleichen schreibfeldern in magnetischen datenspeichereinrichtungen, insbesondere in magnetplattenspeichern |
| JPS56165910A (en) * | 1980-05-24 | 1981-12-19 | Sony Corp | Recording method of binary signal |
| JPS5829110A (ja) * | 1981-08-17 | 1983-02-21 | Hitachi Denshi Ltd | デイジタル信号の磁気記録方法 |
| US4596023A (en) * | 1983-08-25 | 1986-06-17 | Complexx Systems, Inc. | Balanced biphase transmitter using reduced amplitude of longer pulses |
| DE3724256A1 (de) * | 1987-07-22 | 1989-02-02 | Hell Rudolf Dr Ing Gmbh | Funktionsweise einer schaltungsanordnung zum betrieb von graviersystemen fuer die gravur von druckformen |
| JPH03203005A (ja) * | 1989-12-28 | 1991-09-04 | Y E Data Inc | フロツピーデイスクドライブ装置におけるライトデータの書き込み補正方式とその装置 |
| 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 |
| US5339202A (en) * | 1993-03-26 | 1994-08-16 | Minnesota Mining And Manufacturing Company | Method and apparatus for amplitude compensated write equalization |
| US5768235A (en) * | 1996-10-08 | 1998-06-16 | Imation Corp. | Control signal for recording a disc according to a clock signal, data signal, and an index signal |
| US6970312B2 (en) * | 2002-12-23 | 2005-11-29 | Imation Corp. | Full amplitude time-based servopositioning signals |
| CN102243292A (zh) * | 2011-04-02 | 2011-11-16 | 兰州大学 | 确定软磁薄膜材料饱和磁化强度的方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108265A (en) * | 1957-08-14 | 1963-10-22 | Time Inc | Magnetic data recording system |
-
1967
- 1967-03-22 US US625088A patent/US3503059A/en not_active Expired - Lifetime
-
1968
- 1968-01-25 GB GB3870/68A patent/GB1175172A/en not_active Expired
- 1968-01-30 FR FR1554196D patent/FR1554196A/fr not_active Expired
- 1968-02-08 BE BE710510D patent/BE710510A/xx not_active IP Right Cessation
- 1968-02-21 ES ES351840A patent/ES351840A1/es not_active Expired
- 1968-03-11 CH CH359168A patent/CH462249A/de unknown
- 1968-03-19 AT AT272768A patent/AT283781B/de active
- 1968-03-20 NL NL6803913.A patent/NL160411C/nl not_active IP Right Cessation
- 1968-03-20 FI FI680770A patent/FI49759C/fi active
- 1968-03-21 SE SE03764/68A patent/SE350636B/xx unknown
- 1968-03-21 DK DK122868AA patent/DK130698B/da unknown
- 1968-03-21 NO NO1102/68A patent/NO120958B/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL160411B (nl) | 1979-05-15 |
| US3503059A (en) | 1970-03-24 |
| DE1774004B2 (de) | 1976-10-14 |
| AT283781B (de) | 1970-08-25 |
| FR1554196A (nl) | 1969-01-17 |
| DE1774004A1 (de) | 1972-03-23 |
| SE350636B (nl) | 1972-10-30 |
| GB1175172A (en) | 1969-12-23 |
| ES351840A1 (es) | 1969-06-16 |
| FI49759C (fi) | 1975-09-10 |
| DK130698C (nl) | 1975-09-01 |
| NL6803913A (nl) | 1968-09-23 |
| NL160411C (nl) | 1979-10-15 |
| CH462249A (de) | 1968-09-15 |
| FI49759B (nl) | 1975-06-02 |
| BE710510A (nl) | 1968-06-17 |
| DK130698B (da) | 1975-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO120958B (nl) | ||
| US2734186A (en) | Magnetic storage systems | |
| US4924447A (en) | Optical memory device for recording, reproducing or erasing information onto a recording medium, including a recorded region detecting circuit. | |
| GB1535914A (en) | Reproduction of a recorded signal | |
| US4736352A (en) | Optical recording medium and apparatus for recording and reproducing data therein | |
| US3838448A (en) | Compensated baseline circuit | |
| KR840000861A (ko) | 트랙킹 프리셋트 보정회로 | |
| AU562158B2 (en) | Detection of clogging of gaps in rotary magnetic heads | |
| US3217183A (en) | Binary data detection system | |
| US4092682A (en) | Cross coupled demodulator for generating a servo head position error signal | |
| GB2030342A (en) | Device for compensating unequal write fields in magnetic data-storage devices especially in disc memories | |
| EP0464090A1 (en) | Method for modulating binary data | |
| KR960000447B1 (ko) | 정보 기록용 장치 | |
| US2774646A (en) | Magnetic recording method | |
| US3299414A (en) | Phase modulated binary magnetic recording and reproducing system | |
| US3585502A (en) | Method and apparatus for subperiod measurement of successive variable time periods | |
| US3248570A (en) | Signal discriminator circuit | |
| US5383065A (en) | Magnetic disk recorder | |
| US2969528A (en) | Read-write circuit for magnetic recording | |
| US4092683A (en) | Dual-mode demodulator for movement of a servo head | |
| US3016523A (en) | Information storage systems | |
| US3007145A (en) | Synchronizing circuit for magnetic drum | |
| US3434131A (en) | Pulse width sensitive magnetic head with associated binary identification circuit | |
| US3064242A (en) | Magnetic record sensing apparatus | |
| US3133274A (en) | Ternary recording and reproducing apparatus |