JPS5123885B2 - - Google Patents
Info
- Publication number
- JPS5123885B2 JPS5123885B2 JP49016153A JP1615374A JPS5123885B2 JP S5123885 B2 JPS5123885 B2 JP S5123885B2 JP 49016153 A JP49016153 A JP 49016153A JP 1615374 A JP1615374 A JP 1615374A JP S5123885 B2 JPS5123885 B2 JP S5123885B2
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/12—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by optical means
-
- 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
- G11B3/68—Record carriers
- G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
-
- 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
- G11B3/68—Record carriers
- G11B3/72—Groove formations, e.g. run-in groove, run-out groove
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US331235A US3882214A (en) | 1973-02-09 | 1973-02-09 | Trapezoidal smooth grooves for video disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS49114401A JPS49114401A (en]) | 1974-10-31 |
| JPS5123885B2 true JPS5123885B2 (en]) | 1976-07-20 |
Family
ID=23293140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49016153A Expired JPS5123885B2 (en]) | 1973-02-09 | 1974-02-08 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3882214A (en]) |
| JP (1) | JPS5123885B2 (en]) |
| CA (1) | CA1009960A (en]) |
| DE (1) | DE2406365C3 (en]) |
| FR (1) | FR2217755B1 (en]) |
| GB (1) | GB1452975A (en]) |
| IT (1) | IT1007223B (en]) |
| NL (1) | NL7401480A (en]) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5177680U (en]) * | 1974-12-16 | 1976-06-18 |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4007295A (en) * | 1975-07-28 | 1977-02-08 | Rca Corporation | Olefin-SO2 copolymer film adhesion to a substrate |
| US4206256A (en) * | 1975-08-21 | 1980-06-03 | Rca Corporation | Metallized video disc having an insulating layer thereon |
| FR2397931A1 (fr) * | 1977-07-22 | 1979-02-16 | Thomson Brandt | Procede de reproduction de disque support d'information et disque obtenu par un tel procede |
| US4408319A (en) * | 1978-07-15 | 1983-10-04 | Pioneer Electronic Corporation | Optical information recording mother disc and method of producing the same |
| US4582885A (en) * | 1978-07-20 | 1986-04-15 | Minnesota Mining And Manufacturing Company | Shaped plastic articles having replicated microstructure surfaces |
| US4297312A (en) * | 1980-02-04 | 1981-10-27 | Rca Corporation | Method for preparing stylus lapping discs |
| US4363844A (en) * | 1980-09-22 | 1982-12-14 | Lewis Terry W | Metallized information carrying discs |
| US4519065A (en) * | 1980-09-22 | 1985-05-21 | Minnesota Mining And Manufacturing Company | Metallized information carrying discs |
| US4376087A (en) * | 1981-05-26 | 1983-03-08 | Rca Corporation | Processing of video discs |
| US5026510A (en) * | 1988-03-17 | 1991-06-25 | Canon Kabushiki Kaisha | Mold for cast molding substrate having preformat with information pits and method of using same |
| US5324188A (en) * | 1989-12-19 | 1994-06-28 | Canon Kabushiki Kaisha | Roller stamper for molding a substrate sheet to become an information recording medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3010153A (en) * | 1959-03-12 | 1961-11-28 | Gulton Ind Inc | Construction of paraboloid surfaces |
| US3795534A (en) * | 1972-04-19 | 1974-03-05 | Rca Corp | Manufacture of video discs |
-
1973
- 1973-02-09 US US331235A patent/US3882214A/en not_active Expired - Lifetime
-
1974
- 1974-02-01 IT IT20122/74A patent/IT1007223B/it active
- 1974-02-04 NL NL7401480A patent/NL7401480A/xx not_active Application Discontinuation
- 1974-02-05 GB GB519274A patent/GB1452975A/en not_active Expired
- 1974-02-07 CA CA191,967A patent/CA1009960A/en not_active Expired
- 1974-02-08 FR FR7404402A patent/FR2217755B1/fr not_active Expired
- 1974-02-08 JP JP49016153A patent/JPS5123885B2/ja not_active Expired
- 1974-02-11 DE DE2406365A patent/DE2406365C3/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5177680U (en]) * | 1974-12-16 | 1976-06-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2217755B1 (en]) | 1977-09-16 |
| US3882214A (en) | 1975-05-06 |
| DE2406365A1 (de) | 1974-08-15 |
| FR2217755A1 (en]) | 1974-09-06 |
| IT1007223B (it) | 1976-10-30 |
| GB1452975A (en) | 1976-10-20 |
| JPS49114401A (en]) | 1974-10-31 |
| AU6516474A (en) | 1975-08-07 |
| DE2406365C3 (de) | 1978-11-23 |
| NL7401480A (en]) | 1974-08-13 |
| DE2406365B2 (de) | 1978-03-23 |
| CA1009960A (en) | 1977-05-10 |