DE2624375B2 - Disc-shaped information carrier for image or video signals - Google Patents
Disc-shaped information carrier for image or video signalsInfo
- Publication number
- DE2624375B2 DE2624375B2 DE19762624375 DE2624375A DE2624375B2 DE 2624375 B2 DE2624375 B2 DE 2624375B2 DE 19762624375 DE19762624375 DE 19762624375 DE 2624375 A DE2624375 A DE 2624375A DE 2624375 B2 DE2624375 B2 DE 2624375B2
- Authority
- DE
- Germany
- Prior art keywords
- information carrier
- disc
- video signals
- image
- recess
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 10
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims 1
- 239000000969 carrier Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 229920000638 styrene acrylonitrile Polymers 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
Description
Die Erfindung bezieht sich auf einen plattenförmigen, aus wärmehärtbarem Material bestehender Informationsträger mit einer im Zentrum vorgesehenen Ringscheibe aus formbeständigem Material, für vor- ω zugsweise optisch auslesbare, in Form von Oberflächenstrukturen eingespeicherte Bild-bzw. Videosignale.The invention relates to a plate-shaped information carrier made of thermosetting material with an annular disc made of dimensionally stable material in the center, for pre- ω preferably optically readable images or images stored in the form of surface structures. Video signals.
Bei aus wärmehärtbarem Kunststoff hergestellten Informationsträgern hoher Speicherdichte, wie Bildplatten oder dgl, ergibt sich insofern eine Schwierigkeit, & als es bei derartigen Materialien aufgrund von thermischen Spannungen, die während des Herste!- lungsprozesses auftreten, zu nachträglichen Zug-* und/oder Druckspannungen kommen kann, die wiederum die Ursache von mehr oder weniger starken 4() Verformungen der Oberflächenstruktur sind. Oberflächenverformungen dieser Art führen dann meist zu Abtastfehlern, die die Signalwiedergabe erheblich beeinträchtigen können.High storage density for products manufactured from thermosetting plastic information carriers such as optical disks or the like, there is so far a problem, and when it in such materials due to thermal stresses during the Herste - come averaging process occur at subsequent tensile * and / or compressive stresses! which in turn are the cause of more or less severe 4 () deformations of the surface structure. Surface deformations of this kind then usually lead to scanning errors that can significantly impair signal reproduction.
Aus der US-PS 34 30 966 ist ein transparenter 4S plattenförmiger Informationsträger für Bildsignale bekannt, der im Zentrum einen flachen, vom Kunststoffmaterial des Trägerkörpers beidseitig abgedeckten Magnetring aufweist. Dieser Magnetring dient ausschließlich dazu, den Informationsträger durch Magnetkraft am Drehteller des Wiedergabegerätes festzuhalten. From US-PS 34 30 966 a transparent 4S plate-shaped information carrier for image signals is known, which has in the center a flat magnetic ring covered on both sides by the plastic material of the carrier body. This magnetic ring is used exclusively to hold the information carrier on the turntable of the playback device by means of magnetic force.
Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, einen insbesondere aus wärmehärtbarem Kunststoff bestehenden Informationsträger in der « Weise auszubilden, daß die eingangs erwähnten Oberflächenverformungen weitgehend vermieden werden. The present invention is based on the object, in particular of thermosetting Plastic information carriers to be designed in such a way that those mentioned at the beginning Surface deformations are largely avoided.
Ausgehend von einem plattenförmigen Informationsträger der eingangs näher bezeichneten Art wird diese Aufgabe erfindungsgemäß in der Weise gelöst, daß der zentrale, informationsfreie Bereich des Trägerkörpers eine entsprefhend große, kreisrunde Aussparung aufweist und daß die Ringscheibe in diese Aussparung eingesetzt und mit dem Trägerkörper fest verbunden ist.Starting from a plate-shaped information carrier of the type described in more detail at the outset, this According to the invention, the object is achieved in such a way that the central, information-free area of the carrier body has a correspondingly large, circular recess and that the annular disc in this recess is used and firmly connected to the carrier body.
Vorteilhafte Weiterbildungen des Erfindungsgedankens sind den Merkmalen der Unteransprüche entnehmbar. Advantageous further developments of the inventive concept can be found in the features of the subclaims.
Zwei Ausführungsbeispiele von erfindungsgemäß ausgebildeten Informationsträgern werden im folgenden anhand der Zeichnung näher erläutert.Two exemplary embodiments of information carriers designed according to the invention are described below explained in more detail with reference to the drawing.
Die F i g. 1 zeigt in Schnittdarstellung einen aus wärmehärtbarem Kunststoffmaterial bestehenden Informationsträger 1, in dessen Zentrum eine kreisrunde Aussparung vorgesehen ist. Dieser scheibenförmige Informationsträger 1 enthält wenigstens auf einer Seite eine insbesondere optisch auslesbare, in Form von Oberflächenstrukturen eingespeicherte Information, beispielsweise Bild- bzw. Videosignale. In der zentralen Aussparung ist eine flache, der Dicke des Trägerkörpers angepaßte Ringscheibe 2 aus formbeständigem Material eingesetzt. Infolge der wenigstens teilweisen Verwendung formbeständigen Materials anstelle üblicher thermoplastischer Kunststoffe werden die durch mechanische Spannungen verursachten Oberflächenverformungen zumindest so weit verringert, daß dadurch bedingte Abtastfehler weitgehend vermieden werden. Geeignete Materialien für die mit einem Mittelloch versehene Ringscheibe 2 sind Metall, Holz, holzähnliche oder sonstige verstärkte Kunststoffe, während für den eigentlichen Informationsträger 1 vorzugsweise transparente oder farbige wärmehärtbare Kunststoffe auf der Basis von Polyvinylchlorid, Styrol-Acrylnitril, Polymethyl-Metacrylat oder dergleichen sowie GaIs vorgesehen sind.The F i g. 1 shows, in a sectional illustration, an information carrier made of a thermosetting plastic material 1, in the center of which a circular recess is provided. This disc-shaped Information carrier 1 contains at least one side, in particular an optically readable, in the form of Information stored in surface structures, for example image or video signals. In the central The recess is a flat washer 2 made of dimensionally stable material and adapted to the thickness of the support body used. As a result of the at least partial use of dimensionally stable material instead of the usual Thermoplastics are the surface deformations caused by mechanical stresses at least so far that scanning errors caused thereby are largely avoided. Suitable materials for the annular disk 2 provided with a central hole are metal, wood, wood-like or other reinforced plastics, while preferably transparent for the actual information carrier 1 or colored thermosetting plastics based on polyvinyl chloride, styrene-acrylonitrile, Polymethyl methacrylate or the like and GaIs are provided.
Am Außenrand der Ringscheibe 2 ist ein dünner, flanschartiger Ringansatz 3 vorgesehen, der in eine entsprechende Ausnehmung im Trägerkörper eintaucht und so eine formschlüssige Verbindung zwischen Ringscheibe 2 und Trägerkörpeir 1 herstellt. Die Befestigung der Ringscheibe 2 am Trägerkörper erfolgt zweckmäßigerweise durch Kleben, Heften, Schweißen oder dergleichen.On the outer edge of the annular disk 2, a thin, flange-like ring shoulder 3 is provided, which is in a corresponding recess is immersed in the support body and so a form-fitting connection between Ring disk 2 and support body 1 produces. The ring disk 2 is attached to the carrier body expediently by gluing, stapling, welding or the like.
Der in F i g. 2 im Schnitt dargestellte Informationsträger Γ enthält eine im Vergleich zum Ausführungsbeispiel gemäß F i g. 1 etwas dickere zentrale Ringscheibe 2', deren flanschartiger Ringansatz 3' auf dem angrenzenden Bereich des Trägerkörpers aufliegt, während die eigentliche Ringscheibe in die entsprechende kreisrunde Aussparung im Trägerkörper eintaucht.The in F i g. 2, shown in section, contains an information carrier Γ in comparison to the exemplary embodiment according to FIG. 1 slightly thicker central ring disc 2 ', whose flange-like ring extension 3' on the adjacent area of the support body rests, while the actual washer is in the corresponding circular recess in the carrier body.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762624375 DE2624375C3 (en) | 1976-05-31 | 1976-05-31 | Disc-shaped information carrier for image or video signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762624375 DE2624375C3 (en) | 1976-05-31 | 1976-05-31 | Disc-shaped information carrier for image or video signals |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2624375A1 DE2624375A1 (en) | 1977-12-15 |
| DE2624375B2 true DE2624375B2 (en) | 1978-04-27 |
| DE2624375C3 DE2624375C3 (en) | 1979-01-04 |
Family
ID=5979429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762624375 Expired DE2624375C3 (en) | 1976-05-31 | 1976-05-31 | Disc-shaped information carrier for image or video signals |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2624375C3 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049821A1 (en) * | 1980-10-09 | 1982-04-21 | Kabushiki Kaisha Toshiba | Data recording medium |
| EP0129225A1 (en) * | 1983-06-20 | 1984-12-27 | POLYGRAM GmbH | Disc-shaped optically readable information carrier with protective rim |
| EP0192244A1 (en) * | 1985-02-18 | 1986-08-27 | Hitachi Maxell Ltd. | An optical disc |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8400477A (en) * | 1984-02-14 | 1985-09-02 | Philips Nv | OPTICALLY READABLE MEMORY DRIVE. |
| US5273598A (en) * | 1985-02-18 | 1993-12-28 | Hitachi Maxell, Ltd. | Optical disc manufacturing method |
| DE3889619T2 (en) * | 1987-10-27 | 1994-10-13 | Seiko Epson Corp | Information recording plate. |
| US5265086A (en) * | 1987-10-27 | 1993-11-23 | Seiko Epson Corporation | Information recording disk |
| JPH0731422Y2 (en) * | 1987-12-01 | 1995-07-19 | 三井石油化学工業株式会社 | optical disk |
| US5448547A (en) * | 1987-12-01 | 1995-09-05 | Mitsui Petrochemical Industries, Ltd. | Information recording discs |
| JPH064459Y2 (en) * | 1988-02-01 | 1994-02-02 | 日東電工株式会社 | Center hub connection |
| TW207582B (en) * | 1991-06-29 | 1993-06-11 | Sony Co Ltd |
-
1976
- 1976-05-31 DE DE19762624375 patent/DE2624375C3/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049821A1 (en) * | 1980-10-09 | 1982-04-21 | Kabushiki Kaisha Toshiba | Data recording medium |
| EP0129225A1 (en) * | 1983-06-20 | 1984-12-27 | POLYGRAM GmbH | Disc-shaped optically readable information carrier with protective rim |
| EP0192244A1 (en) * | 1985-02-18 | 1986-08-27 | Hitachi Maxell Ltd. | An optical disc |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2624375C3 (en) | 1979-01-04 |
| DE2624375A1 (en) | 1977-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69726387T2 (en) | COMPATIBLE OPTICAL PLATE WITH TWO DIFFERENT PLAYING SYSTEMS | |
| DE2624375C3 (en) | Disc-shaped information carrier for image or video signals | |
| DE3200661C2 (en) | Magneto-optical storage | |
| DE3511712A1 (en) | DISK-SHAPED INFORMATION CARRIER AND METHOD FOR THE PRODUCTION THEREOF | |
| DE3139364A1 (en) | INFORMATION STORAGE DEVICE AND METHOD FOR THE PRODUCTION THEREOF | |
| DE3205478A1 (en) | STORAGE CASSETTE FOR DISK-SHAPED INFORMATION CARRIERS WITH HIGH STORAGE DENSITY | |
| DE2443020A1 (en) | METHOD OF MANUFACTURING IMITATIONS USING A CASTING METHOD | |
| CH662202A5 (en) | METHOD FOR RECORDING A BINARY INFORMATION SIGNAL ON A RECORDING CARRIER WITH A RADIO-SENSITIVE INFORMATION LAYER. | |
| EP0129225B1 (en) | Disc-shaped optically readable information carrier with protective rim | |
| DE2653831C2 (en) | Disc-shaped information carrier | |
| DE3306538A1 (en) | OPTICAL DATA RECORDING PLATE | |
| DE2538383A1 (en) | METHOD AND DEVICE FOR CENTERING A CIRCULAR PLATE | |
| DE2744533A1 (en) | Laser recording media, esp. disks - where recording layer is cover by transparent protective lacquer | |
| DE3229573A1 (en) | OPTICAL RECORDING MATERIAL, INFORMATION CARRIER AND METHOD FOR PRODUCING AN OPTICAL RECORDING MATERIAL | |
| DE3530200A1 (en) | OPTICAL INFORMATION RECORDING PLATE | |
| DE2624380C2 (en) | ||
| DE19950707A1 (en) | Digital optical data disc has two disc surfaces, of which one carries a data recording in CD format and the other in DVD format, and marking(s) indicating format with which side is encoded | |
| DE2643464B1 (en) | Video and audio signal carrier disc - controls optical scan with constant depth of grooves independent of disc and protective layer thicknesses | |
| DE3628701A1 (en) | OPTICALLY READABLE DISK-SHAPED INFORMATION CARRIER | |
| DE3626021C2 (en) | ||
| DE1422063B2 (en) | CARTRIDGE WITH PIEZOELECTRIC CONVERTER ELEMENTS | |
| DE2341338C3 (en) | Recording medium with an optically readable structure and method for producing the recording medium | |
| WO2012059240A1 (en) | Encoder disk and method for the production thereof | |
| DE2347604C3 (en) | Disc-shaped information carrier | |
| DE20012391U1 (en) | Disc-shaped optical data carrier with information layer on both sides |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |