JPS4949B1 - - Google Patents
Info
- Publication number
- JPS4949B1 JPS4949B1 JP43057454A JP5745468A JPS4949B1 JP S4949 B1 JPS4949 B1 JP S4949B1 JP 43057454 A JP43057454 A JP 43057454A JP 5745468 A JP5745468 A JP 5745468A JP S4949 B1 JPS4949 B1 JP S4949B1
- Authority
- JP
- Japan
- 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
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
- G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
-
- 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
- G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Digital Magnetic Recording (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66038367A | 1967-08-14 | 1967-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4949B1 true JPS4949B1 (ja) | 1974-01-05 |
Family
ID=24649319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP43057454A Pending JPS4949B1 (ja) | 1967-08-14 | 1968-08-14 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3537084A (ja) |
| JP (1) | JPS4949B1 (ja) |
| FR (1) | FR1604157A (ja) |
| GB (1) | GB1242576A (ja) |
| NL (1) | NL163651C (ja) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3631422A (en) * | 1969-02-03 | 1971-12-28 | Ibm | System for detection of data time interval measurement |
| US3761906A (en) * | 1971-01-08 | 1973-09-25 | Cogar Corp | Tape system |
| US3755792A (en) * | 1971-03-26 | 1973-08-28 | N Harvey | Digital data storage system |
| US3736581A (en) * | 1971-07-02 | 1973-05-29 | Honeywell Inc | High density digital recording |
| US3749889A (en) * | 1971-08-19 | 1973-07-31 | Interface Ind Inc | Reader apparatus for reading record materials at speeds which are independent of recording speeds |
| US3727202A (en) * | 1972-01-10 | 1973-04-10 | Telex Computer Products | Application of an automatic pulse width controlled, monostable multivibrator for detecting phase encoded information on magnetic tape |
| US3815108A (en) * | 1972-03-17 | 1974-06-04 | Gen Instrument Corp | Self-clocking nrz recording and reproduction system |
| US3838448A (en) * | 1973-02-07 | 1974-09-24 | Control Data Corp | Compensated baseline circuit |
| US4544964A (en) * | 1978-02-24 | 1985-10-01 | Burroughs Corporation | Strobe for read/write chain |
| JPS5813046A (ja) * | 1981-07-17 | 1983-01-25 | Victor Co Of Japan Ltd | デ−タ読み取り回路 |
| GB2205467B (en) * | 1987-05-28 | 1992-02-12 | Apple Computer | Disk drive controller |
| US5151985A (en) * | 1987-05-28 | 1992-09-29 | Apple Computer, Inc. | Disk drive controller |
| US5303416A (en) * | 1993-01-21 | 1994-04-12 | Motorola, Inc. | Method and apparatus for adjusting peak and valley acquisition rates of a signal received by a radio communication device |
| US5394441A (en) * | 1993-02-05 | 1995-02-28 | Motorola, Inc. | Method and apparatus for digitally tracking highs and lows of a signal received by a radio communication device |
| US5425056A (en) * | 1993-03-23 | 1995-06-13 | Motorola, Inc. | Method and apparatus for generating threshold levels in a radio communication device for receiving four-level signals |
| US5557482A (en) * | 1994-12-19 | 1996-09-17 | International Business Machines Corporation | Multipath channel apparatus and method for data storage devices and communications systems wherein a data path is selected based on errors |
| US5670951A (en) * | 1995-07-17 | 1997-09-23 | Motorola, Inc. | Radio communication device and method for generating threshold levels in a radio communication device for receiving four-level signals |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2972735A (en) * | 1955-05-04 | 1961-02-21 | Lab For Electronics Inc | Data processing |
| US3067422A (en) * | 1958-12-24 | 1962-12-04 | Ibm | Phase distortion correction for high density magnetic recording |
| US3243580A (en) * | 1960-12-06 | 1966-03-29 | Sperry Rand Corp | Phase modulation reading system |
| US3271750A (en) * | 1962-12-13 | 1966-09-06 | Ibm | Binary data detecting system |
| US3223115A (en) * | 1963-01-04 | 1965-12-14 | W A Kates Company | Flow regulating apparatus |
| US3405391A (en) * | 1964-12-21 | 1968-10-08 | Ibm | Double frequency detection system |
-
1967
- 1967-08-14 US US660383A patent/US3537084A/en not_active Expired - Lifetime
-
1968
- 1968-08-09 GB GB38050/68A patent/GB1242576A/en not_active Expired
- 1968-08-13 NL NL6811499.A patent/NL163651C/xx not_active IP Right Cessation
- 1968-08-14 FR FR1604157D patent/FR1604157A/fr not_active Expired
- 1968-08-14 JP JP43057454A patent/JPS4949B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL6811499A (ja) | 1969-02-18 |
| FR1604157A (ja) | 1971-07-26 |
| NL163651C (nl) | 1980-09-15 |
| GB1242576A (en) | 1971-08-11 |
| US3537084A (en) | 1970-10-27 |
| NL163651B (nl) | 1980-04-15 |