DE2048431A1 - Method for recording information, preferably of such a large bandwidth in the range of several MHz, on a carrier - Google Patents
Method for recording information, preferably of such a large bandwidth in the range of several MHz, on a carrierInfo
- Publication number
- DE2048431A1 DE2048431A1 DE19702048431 DE2048431A DE2048431A1 DE 2048431 A1 DE2048431 A1 DE 2048431A1 DE 19702048431 DE19702048431 DE 19702048431 DE 2048431 A DE2048431 A DE 2048431A DE 2048431 A1 DE2048431 A1 DE 2048431A1
- Authority
- DE
- Germany
- Prior art keywords
- carrier
- recording
- information
- laser beam
- electron
- 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
- 238000000034 method Methods 0.000 title claims description 15
- 238000005530 etching Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012876 carrier material Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 8
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- 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
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
-
- 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
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
-
- 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
- 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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
-
- 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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
-
- 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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2532—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising metals
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Laser Beam Processing (AREA)
Description
"Verfahren zum Aufzeichnen von Informationen, vorzugsweise von solchen großer Bandbreite im Bereich von mehreren ISHz, auf einem Träger" Das Hauptpatent . ... .., (Patentanmeldung P 20 38 874.3) betrifft ein Verfahren zum Aufzeichnen von Informationen, vorzugsweise von solchen großer Bandbreite im Bereich von mehreren Sitz, auf eineinZ vorzugsweise mit spiralförmig verlaufenden Rillen versehenen, Träger durch Abtragung oder mechanische Verformung seiner Oberfläche und zum Auslesen solcher Informationen, Die wesentlichen Merkmale des Hauptpatentes bestehen darin, daß die Abtragung oder Vorformung der Trägeroberfläche durch einen mit den aufzuzeichnenden Informationen modulierten Elektronen- oder Laserstrahl und das Auslesen der gespeicherten Informationen aus dieser Trägeroberfläch# oder aus von ihr erzeugten Abdrucken durch mechanische Abtastung erfolgt. Es ist dabei insbesondere an die Auslesung dieser gespeicherten Informationen mit Hilfe eines auf Druck."Method of recording information, preferably such large bandwidth in the range of several ISHz, on one carrier "The main patent . ... .., (patent application P 20 38 874.3) relates to a method for recording of information, preferably of such a large bandwidth in the range of several Seat, preferably provided with spiral grooves, Carrier by removal or mechanical deformation of its surface and for reading such information, the essential features of the main patent are: that the removal or preforming of the carrier surface by one with the to be recorded Information modulated electron or laser beam and the reading out of the saved Information from this carrier surface # or from prints generated by it mechanical scanning takes place. It is particularly important to read this out stored information with the help of an on-print.
änderungen ansprechenden Abtasters gedacht, wobei der zur Verwendung kommende Träger sowie dieser Druckabtaster derart ausgebildet sein sollen, daß die durch die Druckkraft bewirkte-elastische Formänderung der die Informationen enthaltenden Trägeroberfläche wesentlich größer ist als die korrespondierende, auf der Zusammendrückung beruhende Auslenkung der Berührungsfläche des Abtasters.changes in appealing sampler intended for use Coming carrier and this pressure scanner should be designed such that the elastic change in shape of the information containing the information caused by the pressure force Carrier surface is much larger than the corresponding one on the compression based deflection of the contact surface of the scanner.
Im Hauptpatent ist eine Reihe von Vorschlägen angegeben, nach denen die Aufzeichnung der Information auf den Träger erfolgen soll.In the main patent a number of proposals are given, according to which the information is to be recorded on the carrier.
Der Erfindung liegt die Aufgabe zugrunde, das Problem der Vervielfachung solcher Aufzeichnungsträger zu vereinfachen.The invention is based on the problem of multiplication to simplify such recording media.
Es wird daher gemäß der Erfindung vorgeschlagen, bei der Ausführung des Verfahrens nach dem Hauptpatent zur Aufzeichnung einen als Matrize verwendbaren Träger mit vorgeformten Rillen zur Führung des Aufzeichnungskopfes zu verwenden, auf dessen Oberflache eine Schicht eines durch den auftreffenden Elektronen- oder Laserstrahl leicht verdampfbaren Metalles aufgebracht ist.It is therefore proposed according to the invention when performing of the method according to the main patent for recording a usable as a template Use carriers with preformed grooves to guide the recording head, on its surface a layer of a by the impinging electron or Laser beam easily vaporizable metal is applied.
Der Träger, auf dem die Information, z. B. als Frequenzmodulation einer Trägerschwingung, aufgezeichnet ist, kann nun einerseits sofort zur Herstellung von einer Anzahl entsprechender Abdrucke verwendet werden, andererseits kann die die Information tragende Schicht, z. B, bei einer Fehlaufzeichnung, leicht abgelöst werden, um durch eine neue Aufzeichnungsschicht ersetzt zu werden. Die Ablösung kann durch Ätzen mit einem Material erfolgen, welches den eigentlichen Träger acht angreift.The carrier on which the information, e.g. B. as frequency modulation a carrier oscillation, is recorded, can now be used immediately on the one hand for production can be used by a number of corresponding imprints, on the other hand the the information carrying layer, e.g. B, in the event of a misrecording, easily peeled off to be replaced with a new recording layer. The replacement can be done by etching with a material that eight the actual carrier attacks.
Der besondere Vorteil der Erfindung besteht also in der Wiederverwendung des Trägers, Diese Möglichkeit der Wiederverwendung ist besonders wichtig, wenn der Träger bereits mit Führungsrillen versehen ist, die zur exakten Führung des Aufzeichnungskopfes dienen, Es sei in diesem Zusammenhang noch erwähnt, daß das Vorschneiden einer Fuh#rungsril le deshalb besonders zu empfehlen ist, weil damit eine erhebliche Materialverformung verbunden ist, die nunmehr während des Aufzeichnungsvorganges nicht noch zusätzlich durchgeführt werden muß.The particular advantage of the invention is that it can be reused of the wearer, this ability to reuse is especially important when the carrier is already provided with guide grooves for the exact guidance of the In this context it should be mentioned that the Pre-cutting a guide rail is particularly recommended because it allows a considerable deformation of the material is connected, which now occurs during the recording process does not have to be carried out additionally.
Den Aufzeichnungsstrahl wird man zweckmäßig derart fokussieren, daß ein strichförmiger Fokus mit seiner Hauptausdehnung senkrecht zur Rillenlängsrichtung entsteht; die den Elektronen- oder Laserstrahl erzeugende Anordnung bzw.The recording beam will expediently be focused in such a way that a line-shaped focus with its main extent perpendicular to the longitudinal direction of the groove arises; the the electron or laser beam generating arrangement respectively.
die Fokussiereinrichtung wird dann derart geführt, daß der Strahlfokus jeweils den zwischen zwei benachbarten Rillen liegenden Steg überdeckt. Auf diesen Steg wird dann die Information mit Hilfe das Elektronen- oder Laserstrahles aufgebracht.the focusing device is then guided in such a way that the beam focus each covers the web lying between two adjacent grooves. On this Web is then applied to the information with the help of the electron or laser beam.
Eine Ausführungsform dieser Erfindung ist in der Zeichnung dargestellt.An embodiment of this invention is shown in the drawing.
In Fig. 1 sind in einem senkrecht durch einen Aufzeichnungsträger gelegten Schnitt verschiedene Beispiele für die Form solcher Führungsrillen angegeben. Von der rechteckigen Führungsrille nach a über die halbrunden Führungsrillen b und c sind auch keilförmige Führungsrillen nach d oder winkelförmige Führungsrillen nach e denkbar.In Fig. 1 are in a perpendicular through a record carrier given section various examples of the shape of such guide grooves. From the rectangular guide groove to a via the semicircular guide grooves b and c are also wedge-shaped guide grooves according to d or angular guide grooves after e conceivable.
In Fig. 2 cist eine Aufsicht auf einen Ausschnitt einessolchen Trägers und in Fig. 3 ein dazu senkrecht verlaufender Schnitt in stark vergrößertem Maßstab dargestellt. Der Träger selbst ist mit 5 bezeichnet. Man erkennt in seiner Oberfläche zwei Rillen 1 und 2 und einen dazwischen liegenden Steg 3, Der Aufzeichnungsstrahl trifft mit einem mehr oder weniger strichförmigen Fokus 4 auf den Träger auf, und zwar genau auf den Steg 3. Wird der Träger in Richtung der Rillenlängsrichtung unter dem mit der Information modulierten Aufzeichnungsstrahl vorbeibewegt, so werden aus der Oberfläche des Steges 3 bzw. aus der auf seiner Oberfläche aufgebrachten Schicht 10 Teile verdampft1 so daß entsprechend der perspektivischen Darstellung nach Fig. 4 Erhebungon 6 stehenbleiben.In Fig. 2c is a plan view of a section of such a carrier and in FIG. 3 a section running perpendicular thereto on a greatly enlarged scale shown. The carrier itself is denoted by 5. One recognizes in its surface two grooves 1 and 2 and an intermediate land 3, the recording beam hits the carrier with a more or less line-shaped focus 4, and though exactly on the web 3. The carrier is taking in the direction of the longitudinal direction of the groove is moved past the recording beam modulated with the information from the surface of the web 3 or from that applied to its surface Layer 10 parts evaporated1 so that according to the perspective illustration according to Fig. 4 elevation 6 stop.
Mit dieser Matrize können dann ohne weiteres Abdrucke hergestellt werden, die das Aussehen der in Fig. 5 dargestellten Anordnung haben. Man erkennt aus der Gegenüberstellung von Fig. 4 und 5, daß anstelle der Rillen 1 und 2 nunmehr Erhebungen 8 und 9 auf dem Träger vorhanden sind, zwischen denen sich die die Informationen enthaltenden Erhebungen 7 befinden. Diese Erhebungon 7 liegen nun aber geschützt zwischen den Erhebungen <3 und 9, was als wesentlicher Vorteil dieser .,ufzeichnungsmethode angesehen wird. Ein Abtaster für die die Information enthaltenden Erhebungen 7 muß schema~ ler sein als der Abstand zwischen den beiden Stegen 8 und 9.Imprints can then easily be made with this die which have the appearance of the arrangement shown in FIG. One recognises from the comparison of FIGS. 4 and 5 that instead of the grooves 1 and 2 now Surveys 8 and 9 are present on the support, between which the information is located containing surveys 7 are located. These elevations on 7 are now protected between the elevations <3 and 9, which is a major advantage of this., recording method is seen. A scanner for the elevations 7 containing the information must be more schematic than the distance between the two webs 8 and 9.
Er wird zwischen diesen beiden Stegen beim Abtasten geführt.It is guided between these two webs during scanning.
Verwendet man dreieckige Rillen gemäß Fig. te, so stoßen die Rillen unmittelbar aneinander. Die Beschriftung erfolgt auch hier in flem Steg, der nun ebenfalls Dreieckprofil aufweist. Solche Profile sind in Fig. 6 und 7 dargestellt.If you use triangular grooves according to Fig. Te, the grooves meet directly to each other. The labeling is also done here in the flem web, which is now also has a triangular profile. Such profiles are shown in FIGS.
Als Trägermaterial kann man für diese Aufzeichnungsme thode ein Metall, z. B. Nickel, Silber, Kupfer oder auch Keramik, verwenden. Die auf seine Oberfläche aufgebrachte Schicht besteht zweckmäßig aus Magnesium, Cadmium, Zink, Blei, Wismuth oder Aluminium. A metal can be used as the carrier material for this recording method. z. B. nickel, silver, copper or ceramic, use. The one on its surface The applied layer expediently consists of magnesium, cadmium, zinc, lead and bismuth or aluminum.
Eine vorteilhafte Abwandlung des beschriebenen Verfahrens besteht darin, daß die auf dem Träger aufgebrachte Schicht aus einem solchen Material besteht und eine derart geringe Dicke aufweist, daß sie einerseits durch einen auf ihr auftreffenden Elektronen- oder Laserstrahl leicht verdampf bar, andererseits aber gegenüber einer auf das Träger.There is an advantageous modification of the method described in that the layer applied to the carrier consists of such a material and has such a small thickness that it is on the one hand impinging on it by a Electron or laser beam easily evaporated, but on the other hand compared to a on the carrier.
terial einwirkenden Ätzflüssigkeit hinreichend resistent ist. Man kann in diesem Fall die Aufzeichnung in eine beispielsweise nur 500 i dicke, die Trägeroberfläche bedeckende Schicht legen, indem diese Schicht durch den Aufzeichnungsstrahl an den Auftreffstellen des Strahles verdampft wird. Nach dieser Beschriftung wird die abgedampfte Stellen aufweisende Trägeroberfläche zum Zwecke einer Reliefvertiefung einem Ätzvorgang unterworfen. Man erhält dann in der Trägeroberfläche entsprechende, die Informationen darstellende Vertiefungen und Erhebungen, die mit mechanischen Mitteln gemäß dem Hauptpatent abtastbar sind.material acting etching liquid is sufficiently resistant. Man In this case, the recording can be in a thickness, for example, only 500 i, the Lay the layer covering the carrier surface by passing this layer through the recording beam is evaporated at the point of impact of the beam. After this label, the support surface having evaporated spots for the purpose of a relief indentation subjected to an etching process. One then obtains corresponding, the indentations and elevations representing the information that are associated with mechanical Means according to the main patent are scannable.
Anstelle einer solchen Ausätzung kann man aber auch auf galvanischem Wege Erhebungen wachsen lassen. In diesem Fall muß allerdings die aufgebrachte und dem Aufzeichnungsstrahl ausgesetzte Schicht so beschaffen sein, daß an den verbleibenden Schichtstellen kein Anwachsen erfolgt.Instead of such an etching, however, you can also use galvanic Ways to let elevations grow. In this case, however, the applied and the layer exposed to the recording beam be such that on the remaining Shift positions no growth takes place.
Diese beiden letztgenannten Abwandlungen der Erfindung sind allerdings aich dann vorteilhaft anwendbar, wenn man einen Aufzeichnungsträger ohne vorgeschnittene Führungsrillen verwendet.These last two modifications of the invention are, however Aich can be used advantageously when one uses a recording medium without a pre-cut Used guide grooves.
Claims (4)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2048431A DE2048431B2 (en) | 1970-08-05 | 1970-10-02 | Method for recording information, preferably of such a large bandwidth in the range of several MHz, on a carrier |
| DE19712118170 DE2118170A1 (en) | 1970-08-05 | 1971-04-15 | Recording information - using vapour electroless or electro-plated support abraded by laser or electron beams |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702038874 DE2038874B2 (en) | 1970-08-05 | 1970-08-05 | Method for recording signals on a memory |
| DE2048431A DE2048431B2 (en) | 1970-08-05 | 1970-10-02 | Method for recording information, preferably of such a large bandwidth in the range of several MHz, on a carrier |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2048431A1 true DE2048431A1 (en) | 1972-04-06 |
| DE2048431B2 DE2048431B2 (en) | 1974-01-10 |
| DE2048431C3 DE2048431C3 (en) | 1979-07-05 |
Family
ID=25759543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2048431A Granted DE2048431B2 (en) | 1970-08-05 | 1970-10-02 | Method for recording information, preferably of such a large bandwidth in the range of several MHz, on a carrier |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2048431B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2402385A1 (en) * | 1973-01-18 | 1974-08-08 | Thomson Csf | METHOD FOR CREATING AN IMPRESSION WITH THE HELP OF A CONCENTRATED WRITING JET AND DEVICES FOR CARRYING OUT THE METHOD |
| DE2742976A1 (en) * | 1976-09-24 | 1978-03-30 | Thomson Brandt | METHOD FOR MANUFACTURING AN INFORMATION CARRIER |
| EP0047361A2 (en) * | 1980-09-03 | 1982-03-17 | Ibm Deutschland Gmbh | Registration support for electro-erosion printing |
| US4513407A (en) * | 1981-07-17 | 1985-04-23 | Thomson-Csf | Device for optical recording and read-out of data along a prerecorded track |
| DE3724622A1 (en) * | 1986-07-25 | 1988-01-28 | Ricoh Kk | Optical information storage medium |
| DE3819876A1 (en) * | 1987-06-17 | 1988-12-29 | Pioneer Electronic Corp | Optical disc |
| US4870508A (en) * | 1978-03-16 | 1989-09-26 | U. S. Philips Corporation | Record carrier body with an optical servo track and optical apparatus for writing and reading information from the carrier |
| US4962493A (en) * | 1973-02-09 | 1990-10-09 | U.S. Philips Corporation | Record carrier with a follow-on track and apparatus for recording information thereon |
| US5090007A (en) * | 1978-11-08 | 1992-02-18 | U.S. Philips Corporation | Optically inscribable record carrier with prerecorded information |
| US5166921A (en) * | 1987-06-17 | 1992-11-24 | Pioneer Electronic Corporation | Optical disk carrying tracking information in multiple formats and apparatus for analyzing same |
| US5270990A (en) * | 1986-08-15 | 1993-12-14 | Canon Kabushiki Kaisha | Tracking error signal detecting apparatus using an electron beam and apparatus for effecting recording/reproduction of information by the utilization of a plurality of electron beams |
Families Citing this family (1)
| 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 |
-
1970
- 1970-10-02 DE DE2048431A patent/DE2048431B2/en active Granted
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2402385A1 (en) * | 1973-01-18 | 1974-08-08 | Thomson Csf | METHOD FOR CREATING AN IMPRESSION WITH THE HELP OF A CONCENTRATED WRITING JET AND DEVICES FOR CARRYING OUT THE METHOD |
| US4962493A (en) * | 1973-02-09 | 1990-10-09 | U.S. Philips Corporation | Record carrier with a follow-on track and apparatus for recording information thereon |
| DE2742976A1 (en) * | 1976-09-24 | 1978-03-30 | Thomson Brandt | METHOD FOR MANUFACTURING AN INFORMATION CARRIER |
| US4870508A (en) * | 1978-03-16 | 1989-09-26 | U. S. Philips Corporation | Record carrier body with an optical servo track and optical apparatus for writing and reading information from the carrier |
| US5090007A (en) * | 1978-11-08 | 1992-02-18 | U.S. Philips Corporation | Optically inscribable record carrier with prerecorded information |
| EP0047361A2 (en) * | 1980-09-03 | 1982-03-17 | Ibm Deutschland Gmbh | Registration support for electro-erosion printing |
| EP0047361A3 (en) * | 1980-09-03 | 1982-03-24 | Ibm Deutschland Gmbh | Registration support for electro-erosion printing |
| US4513407A (en) * | 1981-07-17 | 1985-04-23 | Thomson-Csf | Device for optical recording and read-out of data along a prerecorded track |
| DE3724622A1 (en) * | 1986-07-25 | 1988-01-28 | Ricoh Kk | Optical information storage medium |
| US5270990A (en) * | 1986-08-15 | 1993-12-14 | Canon Kabushiki Kaisha | Tracking error signal detecting apparatus using an electron beam and apparatus for effecting recording/reproduction of information by the utilization of a plurality of electron beams |
| DE3819876A1 (en) * | 1987-06-17 | 1988-12-29 | Pioneer Electronic Corp | Optical disc |
| US5166921A (en) * | 1987-06-17 | 1992-11-24 | Pioneer Electronic Corporation | Optical disk carrying tracking information in multiple formats and apparatus for analyzing same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2048431C3 (en) | 1979-07-05 |
| DE2048431B2 (en) | 1974-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69010114T2 (en) | Aligned slide holding device and slide arrangement therefor. | |
| DE2048431A1 (en) | Method for recording information, preferably of such a large bandwidth in the range of several MHz, on a carrier | |
| DE2151562A1 (en) | Multi-part mold | |
| DE2147049A1 (en) | Blood collection lancet | |
| DE3019403A1 (en) | WORKPIECE WITH A MACHINE-READABLE MARKING INCORPORATED IN A REMOVED WAY AND METHOD FOR THEIR PRODUCTION | |
| DE3610022C2 (en) | Method and device for producing beads in a sheet | |
| DE1183948B (en) | Memories, especially micro memories for information | |
| DE2103462A1 (en) | Type carrier for typewriters or the like | |
| DE2406306C2 (en) | Process for embossing the tear-open section of a tear-open lid and tool for carrying out the process | |
| DE202021106130U1 (en) | Container for steel stamps | |
| DE3012487C2 (en) | Machine element, method of manufacture and device for carrying out the method | |
| DE1904920C3 (en) | Video recording disk and method for making the same | |
| DE8326875U1 (en) | OPTICALLY READABLE CODE CARD | |
| DE808111C (en) | Registration arrangement, especially for vertical registration | |
| WO1999007016A1 (en) | Wafer marking | |
| DE2026591C3 (en) | Liquid sample container that can be inserted into a receiving device | |
| DE3626021C2 (en) | ||
| DE2146128A1 (en) | Method for producing a metallic type carrier tape | |
| DE2609308A1 (en) | Strong paper clip usable also as letter opener and bottle opener - is formed from wire bent several times within single plane to shape outer and inner band sections | |
| DE2502231C3 (en) | Mosaic printing device with printing wires arranged like a grid over a surface | |
| DE9414644U1 (en) | Device for deep drawing metal parts | |
| DE7736466U1 (en) | PUNCH DEVICE | |
| DE102019121527A1 (en) | PROCESS FOR THE OPTIMIZED STRUCTURING OF A 2D CODE ON A COMPONENT | |
| AT271960B (en) | Reading device | |
| DE2119427A1 (en) | Device in inkjet writing directions for deriving the so-called Ver loss ink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BI | Miscellaneous see part 2 | ||
| BI | Miscellaneous see part 2 | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |