CA974641A - Software-generated recording signals - Google Patents
Software-generated recording signalsInfo
- Publication number
- CA974641A CA974641A CA139,556A CA139556A CA974641A CA 974641 A CA974641 A CA 974641A CA 139556 A CA139556 A CA 139556A CA 974641 A CA974641 A CA 974641A
- Authority
- CA
- Canada
- Prior art keywords
- software
- recording signals
- generated recording
- generated
- signals
- 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
- G11B20/16—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
-
- 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)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13667871A | 1971-04-23 | 1971-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA974641A true CA974641A (en) | 1975-09-16 |
Family
ID=22473887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA139,556A Expired CA974641A (en) | 1971-04-23 | 1972-04-12 | Software-generated recording signals |
Country Status (5)
Country | Link |
---|---|
CA (1) | CA974641A (en) |
DE (1) | DE2219676A1 (en) |
FR (1) | FR2144198A5 (en) |
GB (1) | GB1376679A (en) |
IT (1) | IT947882B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4378574A (en) * | 1980-06-25 | 1983-03-29 | Sundstrand Data Control, Inc. | Digital data recorder and method |
-
1972
- 1972-02-25 IT IT2101172A patent/IT947882B/en active
- 1972-02-29 FR FR7207625A patent/FR2144198A5/fr not_active Expired
- 1972-03-16 GB GB1220172A patent/GB1376679A/en not_active Expired
- 1972-04-12 CA CA139,556A patent/CA974641A/en not_active Expired
- 1972-04-21 DE DE19722219676 patent/DE2219676A1/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
FR2144198A5 (en) | 1973-02-09 |
GB1376679A (en) | 1974-12-11 |
DE2219676A1 (en) | 1972-11-09 |
IT947882B (en) | 1973-05-30 |
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