GB908892A - Improvements in or relating to methods and apparatus for recording signals - Google Patents
Improvements in or relating to methods and apparatus for recording signalsInfo
- Publication number
- GB908892A GB908892A GB759858A GB759858A GB908892A GB 908892 A GB908892 A GB 908892A GB 759858 A GB759858 A GB 759858A GB 759858 A GB759858 A GB 759858A GB 908892 A GB908892 A GB 908892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fed
- cut
- bridge
- depth
- disc
- 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
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
908,892. Gramophone disc recording. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 19, 1959 [March 10, 1958; Dec. 29, 1958], Nos. 7598/58 and 41821/58. Class 40 (2). The capacity between a probe electrode 9 and a conductive surface associated with a disc being cut 2 are referred to a bridge network 10 of the type described in Specification 581,164 [see Group XXXVI] to derive an output corresponding to surface irregularities or warpage of the record blank which is fed either to electromagnet means 19, 20 controlling the depth of cut or to a monitor meter. Advance information of the signal to be copied from a master magnetic tape is obtained from auxiliary heads in known manner and fed to the bridge at 25 to vary the depth of cut according to the amplitude of " mono-" signals or a signal corresponding to required hill-and-dale cutting as in stereo recording may be fed in. Alternative bridge arrangements are described in connection with Fig. 2 (not shown) and the Figure accompanying the Provisional Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB759858A GB908892A (en) | 1958-03-10 | 1958-03-10 | Improvements in or relating to methods and apparatus for recording signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB759858A GB908892A (en) | 1958-03-10 | 1958-03-10 | Improvements in or relating to methods and apparatus for recording signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB908892A true GB908892A (en) | 1962-10-24 |
Family
ID=9836190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB759858A Expired GB908892A (en) | 1958-03-10 | 1958-03-10 | Improvements in or relating to methods and apparatus for recording signals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB908892A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2411461A1 (en) * | 1977-12-12 | 1979-07-06 | Dolby Ray | PROCESS FOR REPRODUCING RECORDINGS ON DISC ALLOWING TO COMPENSATE CERTAIN MECHANICAL IMPERFECTIONS |
| FR2499280A1 (en) * | 1981-02-02 | 1982-08-06 | Dolby Ray | HEAD OF READING PHONOGRAPHIC RECORDINGS |
| US4918678A (en) * | 1977-12-12 | 1990-04-17 | Dolby Ray Milton | Disc reproducing system for compensating mechanical imperfections |
-
1958
- 1958-03-10 GB GB759858A patent/GB908892A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2411461A1 (en) * | 1977-12-12 | 1979-07-06 | Dolby Ray | PROCESS FOR REPRODUCING RECORDINGS ON DISC ALLOWING TO COMPENSATE CERTAIN MECHANICAL IMPERFECTIONS |
| US4918678A (en) * | 1977-12-12 | 1990-04-17 | Dolby Ray Milton | Disc reproducing system for compensating mechanical imperfections |
| FR2499280A1 (en) * | 1981-02-02 | 1982-08-06 | Dolby Ray | HEAD OF READING PHONOGRAPHIC RECORDINGS |
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