RU2327232C1 - Volume identifier of compact-disc - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: volume identifier of compact-disc in plastic or other material of compact-disc body massive is presented with foreign discrete physical elements that are able to change their properties in the process of local electromagnet effect, or from the same material as the material of compact-disc body, and differs by the fact that physical inclusions are installed in individual order in compact-disc of body massive, or change of compact-disc body massive density is done so that in case of light or other radiation supply from the source, in plane of compact-disc massive, from internal part to external one on receiver or a system of receivers, which are installed on external part of compact-disc body massive, produce individual flashes, shadows of initial electromagnetic radiation of source.

EFFECT: produces individual flashes.

4 dwg

Description

The present invention "Volumetric identifier of a compact disc" relates to computer technology. The purpose of the invention is to obtain a unique identification tag identifier of a compact disc of minimum thickness with two work planes under which the storage media are located.

The prototype of this technical solution is plastic cassettes for laser CDs, as well as the transparent CDs themselves, but in different colors. Money coins with a notch or inscriptions on a cylindrical surface can also serve as a prototype.

In figure 1, 2, 4 shows possible options for the execution of the volume identifier of the compact discs.

The volume identifier of the compact disc in the simplest case can be made in the form of a color or other mark 1 on the contour of the membrane-plate 2 of the compact disc of figure 1. The color mark on the membrane contour can be, for example, red.

Identification marks on the cylindrical surface of the CD or under this surface in a transparent body resemble a notch on the cylindrical surface of the coins. This circumstance makes it possible to assert that the inscription on a cylindrical surface, for example, of the ruble is an analogue of the proposed technical solution. It identifies not only a certain monetary unit as such, but also carries an information load that is not reflected in any way by a metal cylinder of small height. Such, for example, is information that the metal cylinder in question is a product of a certain country, moreover, of a certain year of manufacture and has financial significance, say, one ruble or dollar, or some other. An even greater formal “similarity” occurs when marks are made in the form of a bar code (in the general case, the membrane contour may not have a cylindrical surface, but be rounded or have any other shape or configuration).

The "similarity" of the above technical solutions and the proposed one ends when working with the color gamut of both the body of the translucent CD plate and the color marks on the contour surface, as well as when placing the information track (for example, magnetic or optical. Information can be updated by recording its known methods and means and even more accurately identify the CD and the basic information that is recorded on it in the traditional way) or its individual sections (points) in the body of the compact disc, oriented in such a way that it is possible to read information on the cylindrical face (rim) of the CD. Such a technical solution is not taken for granted and arising from known technical solutions. This is especially clearly seen when considering not only one plate, the film of the CD, but a combination of several plates 3 of Fig.2.

The need for such a technical solution becomes inevitable when using flexible film compact discs of reduced thickness (~ 0.1 ÷ 0.05 mm) (ThinDisc introduced the development of DVD and CD discs with a thickness of a fraction of a millimeter (against the standard of 1.2 mm) capable of freely bending, wrapping around bottles, investing in bags, newspapers, but preserving the recorded information), with two-way recording of information, large capacity (figure 3). The design of compact discs of this type does not allow any printing on its planes. Information about the disk (or the available data) can only be in the marks printed on the rim of the disk ... or, more precisely, under the cylindrical (or other configuration of the face) face of the CD, so that it can be obtained without removing the film compact - A disc from a cylinder of tightly sealed discs.

The volume identifier of the compact disk 4 (figure 4) in the plastic or other material of the body array of the compact disk 2 is represented by discrete foreign physical elements 4, capable of changing their properties during local electromagnetic exposure, or from the same material as the compact body disk, characterized in that the physical inclusions 4 are placed individually in the array of the body of the CD or the density of the array 4 of the CD is changed so that when applying light or other radiation from the source 5 in the plane of the array of the compact disc from the inside to the outside on the receiver 6 or a system of receivers located on the outside of the array of the body of the compact disc 2, glare, shadow 7 of the source electromagnetic radiation of the source 5 was generated.

The read information unambiguously determines the desired CD, and without removing it from the stack of CDs and placing it in a drive that reads information on flat edges. In addition to the unique identification tag, “Volume Identifier of a CD” can carry brief information about the nature of the information contained on the disk.

The name "Volume Identifier ..." is adopted due to the location of variable density or discrete foreign inclusions in the volume of the CD construction array. As a quotient of the whole, identification marks can be applied along the rim of a CD-ROM by analogy with barcode information.

Information sources

1. Information on discs of minimum thickness is obtained from the Internet address: http://www.media-security.ru/cd/index.htm.

Claims (1)

The volume identifier of a compact disc in a plastic or other material of an array of the compact disc body is represented by discrete discrete physical elements capable of changing their properties during local electromagnetic exposure, or from the same material as the compact disc body, characterized in that the physical inclusions placed individually in the body array of the CD, or the density of the array of the CD is changed so that when applying light or other radiation from the source to the plane CD array, with the inner portion to the outer of the receiver or receiver system located on the outer portion of the CD body array, generate individual glare, shadows original source of electromagnetic radiation.

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