IT1140243B - Trasduttore piezoelettrico per la registrazione di informazioni video - Google Patents
Trasduttore piezoelettrico per la registrazione di informazioni videoInfo
- Publication number
- IT1140243B IT1140243B IT24645/81A IT2464581A IT1140243B IT 1140243 B IT1140243 B IT 1140243B IT 24645/81 A IT24645/81 A IT 24645/81A IT 2464581 A IT2464581 A IT 2464581A IT 1140243 B IT1140243 B IT 1140243B
- Authority
- IT
- Italy
- Prior art keywords
- recording
- video information
- piezoelectric transducer
- piezoelectric
- transducer
- Prior art date
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
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/201,057 US4349902A (en) | 1980-10-27 | 1980-10-27 | Piezoelectric transducer for recording video information |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8124645A0 IT8124645A0 (it) | 1981-10-22 |
IT1140243B true IT1140243B (it) | 1986-09-24 |
Family
ID=22744303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT24645/81A IT1140243B (it) | 1980-10-27 | 1981-10-22 | Trasduttore piezoelettrico per la registrazione di informazioni video |
Country Status (8)
Country | Link |
---|---|
US (1) | US4349902A (it) |
JP (1) | JPS57101499A (it) |
AU (1) | AU538733B2 (it) |
CA (1) | CA1167567A (it) |
DE (1) | DE3142601A1 (it) |
FR (1) | FR2493089A1 (it) |
GB (1) | GB2086126B (it) |
IT (1) | IT1140243B (it) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4802156A (en) * | 1987-07-29 | 1989-01-31 | Industrial Technology Research Institute | Cutting machine for pits on CD master |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3842194A (en) * | 1971-03-22 | 1974-10-15 | Rca Corp | Information records and recording/playback systems therefor |
US3805100A (en) * | 1972-01-22 | 1974-04-16 | Ted Bildplatten | Piezoelectric record cutting stylus |
DE2216051A1 (de) * | 1972-04-01 | 1973-11-22 | Ted Bildplatten | Verfahren zur mechanischen signalaufzeichnung und anordnung zur ausuebung des verfahrens |
US3824352A (en) * | 1973-04-30 | 1974-07-16 | Zenith Radio Corp | Stacked piezoelectric transducer acting as quarter-wave resonator for recording video information |
US3835262A (en) * | 1973-06-04 | 1974-09-10 | Zenith Radio Corp | Video disc cutting using pressurized air to control depth of grooves |
US3976830A (en) * | 1974-10-24 | 1976-08-24 | Cbs Inc. | Apparatus and method for embossing information on a disc |
US4035590A (en) * | 1975-06-30 | 1977-07-12 | Rca Corporation | Apparatus for electromechanical recording of short wavelength modulation in a metal master |
US4044379A (en) * | 1975-06-30 | 1977-08-23 | Rca Corporation | Method and apparatus for electromechanical recording of short wavelength modulation in a metal master |
DE2618866A1 (de) * | 1976-04-29 | 1977-11-17 | Eckhard Laue | Abtaster fuer dichtspeicherplatten |
DE2752022C3 (de) * | 1977-11-22 | 1980-07-17 | Ted Bildplatten Ag Aeg-Telefunken- Teldec, Zug (Schweiz) | Gerät zur mechanischen Aufzeichnung eines Signals mit mehreren MHz Bandbreite, insbesondere zur mechanischen Aufzeichnung eines Videosignals auf eine Bildplatte |
-
1980
- 1980-10-27 US US06/201,057 patent/US4349902A/en not_active Expired - Lifetime
-
1981
- 1981-10-16 CA CA000388166A patent/CA1167567A/en not_active Expired
- 1981-10-20 AU AU76663/81A patent/AU538733B2/en not_active Ceased
- 1981-10-22 IT IT24645/81A patent/IT1140243B/it active
- 1981-10-23 GB GB8131973A patent/GB2086126B/en not_active Expired
- 1981-10-23 JP JP56170649A patent/JPS57101499A/ja active Pending
- 1981-10-26 FR FR8120057A patent/FR2493089A1/fr active Granted
- 1981-10-27 DE DE19813142601 patent/DE3142601A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
IT8124645A0 (it) | 1981-10-22 |
GB2086126A (en) | 1982-05-06 |
CA1167567A (en) | 1984-05-15 |
DE3142601A1 (de) | 1982-07-15 |
GB2086126B (en) | 1985-04-17 |
JPS57101499A (en) | 1982-06-24 |
US4349902A (en) | 1982-09-14 |
FR2493089A1 (fr) | 1982-04-30 |
AU538733B2 (en) | 1984-08-23 |
AU7666381A (en) | 1982-05-06 |
FR2493089B1 (it) | 1985-03-08 |
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