FI49759B - - Google Patents
Info
- Publication number
- FI49759B FI49759B FI770/68A FI77068A FI49759B FI 49759 B FI49759 B FI 49759B FI 770/68 A FI770/68 A FI 770/68A FI 77068 A FI77068 A FI 77068A FI 49759 B FI49759 B FI 49759B
- Authority
- FI
- Finland
Links
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 (2)
| Publication Number | Publication Date |
|---|---|
| FI49759B true FI49759B (he) | 1975-06-02 |
| FI49759C FI49759C (fi) | 1975-09-10 |
Family
ID=24504533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI680770A FI49759C (fi) | 1967-03-22 | 1968-03-20 | Tapa tallentaa tietoja magneettiseen tallennusvälineeseen ja tavan sov eltamiseen käytettävä laite. |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3503059A (he) |
| AT (1) | AT283781B (he) |
| BE (1) | BE710510A (he) |
| CH (1) | CH462249A (he) |
| DK (1) | DK130698B (he) |
| ES (1) | ES351840A1 (he) |
| FI (1) | FI49759C (he) |
| FR (1) | FR1554196A (he) |
| GB (1) | GB1175172A (he) |
| NL (1) | NL160411C (he) |
| NO (1) | NO120958B (he) |
| SE (1) | SE350636B (he) |
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 |
| US3947878A (en) * | 1972-03-17 | 1976-03-30 | General Instrument Corporation | 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 |
| 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/xx not_active IP Right Cessation
- 1968-03-20 FI FI680770A patent/FI49759C/fi active
- 1968-03-21 DK DK122868AA patent/DK130698B/da unknown
- 1968-03-21 NO NO1102/68A patent/NO120958B/no unknown
- 1968-03-21 SE SE03764/68A patent/SE350636B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL160411C (nl) | 1979-10-15 |
| US3503059A (en) | 1970-03-24 |
| NL160411B (nl) | 1979-05-15 |
| CH462249A (de) | 1968-09-15 |
| DE1774004A1 (de) | 1972-03-23 |
| NL6803913A (he) | 1968-09-23 |
| NO120958B (he) | 1970-12-28 |
| AT283781B (de) | 1970-08-25 |
| FR1554196A (he) | 1969-01-17 |
| GB1175172A (en) | 1969-12-23 |
| BE710510A (he) | 1968-06-17 |
| DK130698C (he) | 1975-09-01 |
| ES351840A1 (es) | 1969-06-16 |
| SE350636B (he) | 1972-10-30 |
| DK130698B (da) | 1975-03-24 |
| DE1774004B2 (de) | 1976-10-14 |
| FI49759C (fi) | 1975-09-10 |