CS223956B2 - Method of optical recording of information - Google Patents
Method of optical recording of information Download PDFInfo
- Publication number
- CS223956B2 CS223956B2 CS774900A CS490077A CS223956B2 CS 223956 B2 CS223956 B2 CS 223956B2 CS 774900 A CS774900 A CS 774900A CS 490077 A CS490077 A CS 490077A CS 223956 B2 CS223956 B2 CS 223956B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- track
- light
- information
- width
- dark
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000003287 optical effect Effects 0.000 title abstract description 11
- 238000005286 illumination Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 210000001747 pupil Anatomy 0.000 abstract 2
- 238000005452 bending Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000008774 maternal effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7622622A FR2359476A1 (fr) | 1976-07-23 | 1976-07-23 | Procede de lecture optique d'un support d'information et lecteur optique mettant en oeuvre un tel procede de lecture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS223956B2 true CS223956B2 (en) | 1983-11-25 |
Family
ID=9176095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS774900A CS223956B2 (en) | 1976-07-23 | 1977-07-22 | Method of optical recording of information |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4171879A (de) |
| JP (1) | JPS5315104A (de) |
| CA (1) | CA1104716A (de) |
| CS (1) | CS223956B2 (de) |
| DE (1) | DE2733209A1 (de) |
| FR (1) | FR2359476A1 (de) |
| GB (1) | GB1560976A (de) |
| PL (1) | PL115951B1 (de) |
| SU (1) | SU822773A3 (de) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56126747A (en) * | 1980-03-12 | 1981-10-05 | Hitachi Ltd | Inspecting method for flaw, alien substance and the like on surface of sample and device therefor |
| US4349901A (en) * | 1980-06-20 | 1982-09-14 | Eastman Kodak Company | Apparatus and method for reading optical discs |
| JPS5797261U (de) * | 1980-12-05 | 1982-06-15 | ||
| NL8103505A (nl) * | 1981-07-24 | 1983-02-16 | Philips Nv | Inrichting voor het puntsgewijs aftasten van een voorwerp. |
| NL8104946A (nl) * | 1981-11-02 | 1983-06-01 | Philips Nv | Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestructuur op een registratiedrager. |
| JPS58121147A (ja) * | 1982-01-11 | 1983-07-19 | Olympus Optical Co Ltd | 光学的情報記録再生装置 |
| EP0241942B1 (de) * | 1986-04-18 | 1992-03-04 | Mitsubishi Denki Kabushiki Kaisha | Optischer Kopf |
| JP3063805B2 (ja) * | 1991-02-25 | 2000-07-12 | オリンパス光学工業株式会社 | 光学式情報再生装置および記録媒体 |
| FR2723243B1 (fr) * | 1994-07-26 | 1996-09-06 | Thomson Csf | Dispositif d'enregistrement et/ou de lecture de tetes magnetiques et son procede de realisation |
| FR2739965B1 (fr) * | 1995-10-17 | 1997-11-07 | Thomson Csf | Dispositif emetteur-recepteur de lumiere et systeme de lecture optique |
| KR100354534B1 (ko) * | 1998-03-17 | 2002-12-11 | 삼성전자 주식회사 | 협트랙광디스크를위한광픽업 |
| FR2786345B1 (fr) | 1998-11-24 | 2001-02-09 | Thomson Csf | Dispositif de cryptage quantique |
| US7149173B2 (en) * | 2000-10-17 | 2006-12-12 | Thales | Medium for recording optically readable data, method for making same and optical system reproducing said data |
| FR2824905B1 (fr) * | 2001-05-15 | 2003-08-29 | Thomson Csf | Gyrometre a fibre optique |
| ATE468808T1 (de) | 2005-03-01 | 2010-06-15 | Masimo Laboratories Inc | Nichtinvasiver multiparameter-patientenmonitor |
| US8374665B2 (en) | 2007-04-21 | 2013-02-12 | Cercacor Laboratories, Inc. | Tissue profile wellness monitor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2266932B1 (de) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
| FR2235448B1 (de) * | 1973-06-29 | 1976-05-07 | Thomson Brandt | |
| US3983317A (en) * | 1974-12-09 | 1976-09-28 | Teletype Corporation | Astigmatizer for laser recording and reproducing system |
| US4065786A (en) * | 1975-09-30 | 1977-12-27 | Rca Corporation | Videodisc playback system |
-
1976
- 1976-07-23 FR FR7622622A patent/FR2359476A1/fr active Granted
-
1977
- 1977-07-19 US US05/817,010 patent/US4171879A/en not_active Expired - Lifetime
- 1977-07-20 GB GB30563/77A patent/GB1560976A/en not_active Expired
- 1977-07-21 PL PL1977199801A patent/PL115951B1/pl unknown
- 1977-07-22 CA CA283,394A patent/CA1104716A/en not_active Expired
- 1977-07-22 CS CS774900A patent/CS223956B2/cs unknown
- 1977-07-22 SU SU772505402A patent/SU822773A3/ru active
- 1977-07-22 DE DE19772733209 patent/DE2733209A1/de not_active Ceased
- 1977-07-22 JP JP8748177A patent/JPS5315104A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| CA1104716A (en) | 1981-07-07 |
| PL199801A1 (pl) | 1978-04-10 |
| US4171879A (en) | 1979-10-23 |
| GB1560976A (en) | 1980-02-13 |
| SU822773A3 (ru) | 1981-04-15 |
| JPS6128172B2 (de) | 1986-06-28 |
| DE2733209A1 (de) | 1978-02-09 |
| PL115951B1 (en) | 1981-05-30 |
| JPS5315104A (en) | 1978-02-10 |
| FR2359476A1 (fr) | 1978-02-17 |
| FR2359476B1 (de) | 1978-12-22 |
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