GB1449383A - Distortion correcting circuits - Google Patents
Distortion correcting circuitsInfo
- Publication number
- GB1449383A GB1449383A GB505174A GB505174A GB1449383A GB 1449383 A GB1449383 A GB 1449383A GB 505174 A GB505174 A GB 505174A GB 505174 A GB505174 A GB 505174A GB 1449383 A GB1449383 A GB 1449383A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- pulses
- circuit
- average
- detects
- 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
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
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732306310 DE2306310C3 (de) | 1973-02-08 | Digitale Entzerrerschartung zur Entzerrung der von einem Magnetschichtspeicher gelieferten Leseimpulsfolgen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1449383A true GB1449383A (en) | 1976-09-15 |
Family
ID=5871375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB505174A Expired GB1449383A (en) | 1973-02-08 | 1974-02-04 | Distortion correcting circuits |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE810779A (fr) |
| FR (1) | FR2217757B3 (fr) |
| GB (1) | GB1449383A (fr) |
| IT (1) | IT1007175B (fr) |
| NL (1) | NL7401456A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1206332B (it) * | 1983-10-25 | 1989-04-14 | Honeywell Inf Systems | Apparato digitale per sistema di recupero di informazioni binarie registrate su supporti magnetici. |
| IT1200426B (it) * | 1985-03-21 | 1989-01-18 | Honeywell Inf Systems | Apparato digitale per sistema di recupero di informazioni binarie registrate su supporti magnetici |
| IT1185412B (it) * | 1985-10-10 | 1987-11-12 | Honeywell Inf Systems | Tseparatore digitale di dati |
-
1974
- 1974-01-31 IT IT2001474A patent/IT1007175B/it active
- 1974-02-01 NL NL7401456A patent/NL7401456A/xx unknown
- 1974-02-04 GB GB505174A patent/GB1449383A/en not_active Expired
- 1974-02-07 FR FR7404141A patent/FR2217757B3/fr not_active Expired
- 1974-02-08 BE BE140696A patent/BE810779A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2217757B3 (fr) | 1976-11-26 |
| DE2306310A1 (de) | 1974-08-29 |
| IT1007175B (it) | 1976-10-30 |
| NL7401456A (fr) | 1974-08-12 |
| FR2217757A1 (fr) | 1974-09-06 |
| DE2306310B2 (de) | 1975-06-26 |
| BE810779A (fr) | 1974-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |