GB1278100A - Method and apparatus for storing digital data - Google Patents
Method and apparatus for storing digital dataInfo
- Publication number
- GB1278100A GB1278100A GB47283/69A GB4728369A GB1278100A GB 1278100 A GB1278100 A GB 1278100A GB 47283/69 A GB47283/69 A GB 47283/69A GB 4728369 A GB4728369 A GB 4728369A GB 1278100 A GB1278100 A GB 1278100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- digital data
- signals
- series
- storing digital
- superposed
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
1278100 Digital data storage on gramophone records EG & G Inc 25 Sept 1969 [2 Jan 1969] 47283/69 Heading G5R Digital data are stored in a record groove as undulations representing a series of superposed signals of the form where T is the interval between superposed signals, 1/T is the digital data rate, and t is the instantaneous time. Sinusoidal clock signals are added. Two series of signals may be recorded orthogonally in a single groove. A constant velocity recording characteristic is used.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78844169A | 1969-01-02 | 1969-01-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1278100A true GB1278100A (en) | 1972-06-14 |
Family
ID=25144498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB47283/69A Expired GB1278100A (en) | 1969-01-02 | 1969-09-25 | Method and apparatus for storing digital data |
Country Status (10)
Country | Link |
---|---|
BE (1) | BE740915A (en) |
BR (1) | BR6914619D0 (en) |
CH (1) | CH523569A (en) |
DE (1) | DE1964536A1 (en) |
FR (1) | FR2027630A1 (en) |
GB (1) | GB1278100A (en) |
IL (1) | IL32869A (en) |
NL (1) | NL6919439A (en) |
NO (1) | NO128931B (en) |
SE (1) | SE344841B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2531983C2 (en) * | 1975-07-17 | 1982-09-02 | Polygram Gmbh, 2000 Hamburg | Method for recording signals as frequency division multiplex in the groove of a disk-shaped recording medium and method for reproducing them. |
DE19740340C2 (en) * | 1997-09-13 | 2000-10-05 | Werner Doering | Automatic control device for leak diagnosis system |
-
1969
- 1969-08-20 IL IL32869A patent/IL32869A/en unknown
- 1969-08-22 NO NO03400/69A patent/NO128931B/no unknown
- 1969-09-25 GB GB47283/69A patent/GB1278100A/en not_active Expired
- 1969-10-09 SE SE13873/69A patent/SE344841B/xx unknown
- 1969-10-27 FR FR6936814A patent/FR2027630A1/fr not_active Withdrawn
- 1969-10-28 BE BE740915D patent/BE740915A/xx unknown
- 1969-10-29 CH CH1613269A patent/CH523569A/en not_active IP Right Cessation
- 1969-11-28 BR BR214619/69A patent/BR6914619D0/en unknown
- 1969-12-23 DE DE19691964536 patent/DE1964536A1/en active Pending
- 1969-12-24 NL NL6919439A patent/NL6919439A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NO128931B (en) | 1974-01-28 |
SE344841B (en) | 1972-05-02 |
BR6914619D0 (en) | 1973-01-04 |
BE740915A (en) | 1970-04-28 |
CH523569A (en) | 1972-05-31 |
IL32869A0 (en) | 1969-11-12 |
IL32869A (en) | 1972-01-27 |
DE1964536A1 (en) | 1970-08-13 |
NL6919439A (en) | 1970-07-06 |
FR2027630A1 (en) | 1970-10-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1011875A (en) | Information records and recording/playback systems therefor | |
CA1033834A (en) | Data record tracking using track identifying information in the gaps between recorded data groups | |
JPS5363002A (en) | Signal recording system and disk type medium for recording signal | |
CA1019832A (en) | Disk-shaped record carrier on which information is recorded in the form of an optical structure | |
GB1313227A (en) | Information storage devices | |
GB1213011A (en) | Improvements in and relating to magnetic recording | |
GB1278100A (en) | Method and apparatus for storing digital data | |
GB1034211A (en) | Phase modulation reading system | |
AU1355870A (en) | Multitrack high bit density record and reproduce system | |
GB1217532A (en) | Improvements in or relating to video recording | |
CA919208A (en) | Apparatus for recording and/or playing back magnetic recordings on or from a flexible, in particular tape-shaped, record carrier | |
CA955337A (en) | Digital data recording and reproducing system | |
GB951361A (en) | Improved recording head | |
CA918800A (en) | Apparatus for recording and for reproducing magnetic high-frequency recordings, in particular video signals, on or from a tape-shaped record carrier, and cassette for use with theapparatus | |
CA954217A (en) | Data recording and reproducing system | |
CA1022676A (en) | Apparatus for reading a record carrier in which information, for example, video and/or audio information, is recorded in at least one track | |
CA856636A (en) | Recording and playback apparatus for a record carrier in the form of a tape | |
JPS5215307A (en) | Data reader | |
CA974808A (en) | Information recording and reproducing system | |
CA1024650A (en) | High density information records and playback apparatus therefor | |
AU479735B2 (en) | High density information records and playback apparatus therefor | |
CA816570A (en) | Cartridge type magnetic helicoidal tape recorder and reproducer | |
CA947865A (en) | System for recording and reproducing a plurality of signals and a medium for carrying a plurality of signals | |
AU3949772A (en) | High density information records and playback apparatus therefor | |
CA965874A (en) | Digital data recording and reproducing system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |