WO2011145792A1

WO2011145792A1 - Disk for chipless rfid

Info

Publication number: WO2011145792A1
Application number: PCT/KR2010/008567
Authority: WO
Inventors: Youngbin Cho
Original assignee: Lg Innotek Co., Ltd.
Priority date: 2010-05-20
Filing date: 2010-12-02
Publication date: 2011-11-24
Also published as: KR20110127813A

Abstract

Disclosed herein is a chipless RFID-purpose disk. In short, a chipless RFID-purpose disk of the invention includes a substrate formed with a recorded layer; a reflecting layer formed on a recorded layer of the substrate; a protective layer formed on the reflecting layer, and wherein at least one of the substrate, the reflecting layer and the protective layer is formed with a printed layer distributed with metal fibers.

Description

DISK FOR CHIPLESS RFID

The present invention relates to a chipless RFID disk capable of easily realizing a genuine disk preventing an illegal copy.

An RFID (Radio Frequency Identification) system is a contactless recognition system for transmitting and processing object information and work environmental information.

An RFID system emerged ever since 1980s is called a radio recognition system, a radio frequency identification system or a radio identification system.

RFID systems are basically comprised of an RFID tag storing data, and an RFID reader having a reading function of data stored in the RFID tag.

The RFID tag is comprised of an RFID tag chip and an antenna manufactured in semiconductor, and divided as a passive type and an active type according to its operation characteristic.

A passive type is a formation of operating by supplying energy from a propagation signal of an RFID reader, and an active type is a formation of an RFID tag embedded with an electric cell for unaided operation.

Radio frequency identification technologies used in an RFID system have advantages of a direct contact like a barcode or an unnecessary scanning within a visible light band.

Owing to such advantages, an RFID system has been evaluated as a barcode system-replaceable system and its availability range also is expected to expand steadily.

As an RF (Radio Frequency) band used in an RFID system, there exist 30~500kHz band diagnosed into a low frequency band, 850~950MHz and 2.4~2.5GHz bands diagnosed into a high frequency band.

Herein, a low frequency band is relatively short in a recognition range, that is lower than 1.8m, and a high frequency band is relatively long in RF recognition, that is more than 27m.

Hence, depending on whether a recognition range should be long or satisfied to be only short, it is possible to apply and employ an RFID system using an RF signal of a corresponding frequency band.

Such an RFID system is attached to a certain item, and comprised of an RFID tag in which information on that item is stored, and an RFID reader communicating with the RFID tag.

The RFID reader modulated and sends out an RF (Radio Frequency) signal having a specific carrier frequency.

When an item attached with the RFID tag is placed within a read zone of the RFID reader, the RFID tag may receive a signal sent by the RFID reader, and transmit pieces of predefined information stored in an intra-memory to the RFID reader in response to a received signal.

The present invention is to solve challenges capable of easily realizing a real-made disk protective against an illegal copy.

The present invention is constructed to provide the chipless RFID-purpose disk including,

a substrate formed with a recorded layer;

a reflecting layer formed on a recorded layer of the substrate;

a protective layer formed on the reflecting layer, and

wherein at least one of the substrate, the reflecting layer and the protective layer is formed with a printed layer distributed with metal fibers.

A chipless RFID disk according to the present invention creates an effect of, formed with a print layer distributed with metal fibers, discriminating whether to be a real-made disk or an unlawful disk using a print layer distributed with the metal fibers.

Further, since formed of a printed layer distributed with metal fibers, a chipless RFID disk of the present invention has an effect of detecting an ID using a chipless RFID technology that no chip exists.

Also, a chipless RFID disk of the present invention has an effect of capable of easily realizing a real-made disk protective against an illegal copy with a print layer distributed with metal fibers.

FIG. 1 is a schematic perspective view in describing a chipless RFID (Radio-Frequency IDentification) purpose disk according to the present invention;

FIG. 2 is a schematic cross-sectional view in describing a chipless RFID-purpose disk according to the present invention;

FIG. 3 is a schematic cross-sectional view in describing a chipless RFID-purpose disk according to a first embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view in describing a chipless RFID-purpose disk according to a second embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view in describing a chipless RFID-purpose disk according to a third embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view in describing a chipless RFID-purpose disk according to a fourth embodiment of the present invention;

FIGS. 7a and 7b are schematic cross-sectional views in describing a chipless RFID-purpose disk according to a fifth embodiment of the present invention;

FIGS. 8a and 8b are schematic conceptional views in describing a pattern of metal fibers distributed on a printed layer applied to the present invention;

FIG. 9 is a schematic flow diagram in describing a manufacturing method of a chipless RFID-purpose disk of the present invention; and

FIGS. 10a to 10c are conceptional views showing a distributed state with metal fibers applied to the invention.

Hereinafter, reference will be made below to the accompanying drawings in describing an embodiment of the invention.

FIG. 1 is a schematic perspective diagram for describing a chipless RFID (Radio-Frequency IDentification) purpose disk according to the present invention.

A chipless RFID disk of the present invention is formed with a print layer distributed with metal fibers, thereby discriminating whether to be a real-made disk or an unlawful disk using a print layer distributed with the metal fibers.

That is, before the chipless RFID disk 100 is mounted in an Optical Disk Drive (ODD) which then picks-up recorded information, the reader 200 installed at the disc driver illuminates microwave into a print layer distributed with the metal fibers, reflecting waves of a specific waveform may produce from the metal fibers and the reader 200 may sense a unique ID contained on metal fibers distributed on the print layer by detecting the reflecting waves.

Therefore, a disk not formed of a print layer distributed with the metal fibers or a disc in which a print layer distributed with the metal fibers are formed but its ID is not authenticated may be determined as an illegal disc.

And, since a printed layer distributed with metal fibers is formed, an anti-copy prevention system of the present invention has an advantage of detecting an ID using a chipless RFID technology non-existent of a chip.

Meanwhile, the chipless RFID-purpose disc 100 may be realized with one of a CD (Compact Disc), a DVD (Digital Versatile Disc), a BD (Blu-ray Disc), and a HD-DVD (High Definition Digital Versatile Disc).

FIG. 2 is a schematic cross-sectional view in describing a chipless RFID-purpose disk according to the present invention.

A chipless RFID-purpose disk includes a substrate 110 formed with a recorded layer (not shown); a reflecting layer 120 formed on a recorded layer of the substrate 110; and a protective layer 130 formed on the reflecting layer 120, and at least one of the substrate 110, the reflecting layer 120 and the protective layer 130 is formed with a printed layer distributed with metal fibers.

And, a centre area of the substrate 110 is formed of a through hole 101.

That is, after a manufacture of a chipless RFID-purpose disk is completed, use of the through hole 101 facilitates packing, or the through hole 101 may facilitate a user grip.

FIG. 3 is a schematic cross-section view for describing a chipless RFID-purpose disk according to a first embodiment of the invention.

A chipless RFID-purpose disk according to a first embodiment of the invention is comprised of a structure that a surrounding of a through hole 101 of a substrate 110 has a substrate area 150 not formed of a recorded layer, and a substrate area 150 not formed of the record layer is formed with a print layer 160 distributed with metal fibers.

Thus, it is easy that a reader 200 installed at an optical disc drive illuminates microwave into a printed layer 160 distributed by the metal fibers, and the reader 200 easily detects reflecting waves produced from the metal fibers.

FIG. 4 is a schematic cross-section view for describing a chipless RFID-purpose disk according to a second embodiment of the present invention.

A chipless RFID-purpose disk according to a second embodiment of the present invention is divided into a recorded area and a non-record area, and comprised of a structure that a print layer 161 distributed with metal fibers is formed in the non-recording area.

Also, the substrate 110 may be divided as a recorded area and a non-recording area, and the non-recording area may be formed with a print layer 161 distributed with metal fibers.

At this time, the non-recording area may be realized of a surrounding area of a through hole 101 of a substrate 110.

And, a print layer 161 distributed with the metal fibers may be formed at the substrate 110 lower part area of the non-recording area.

FIG. 5 is a schematic cross-section view for describing a chipless RFID-purpose disk according to a third embodiment of the invention, and FIG. 6 is a schematic cross-section view for describing a chipless RFID-purpose disk according to a fourth embodiment of the present invention.

A chipless RFID-purpose disk according to a third embodiment of the present invention includes a substrate 110 formed with a recorded area (not shown); a reflecting layer 120 formed on the recorded layer of the substrate 110; a print layer 162 distributed with metal fibers, formed on the reflecting layer 120; and a protective layer 130 formed on the print layer 162.

That is, a print layer 162 distributed with the metal fibers is formed between the reflecting layer 120 and the protective layer 130.

And, the recorded layer is formed on the upper part surface of the substrate 110, and the recorded layer upper part is formed with a reflecting layer 120.

Thus, in the substrate 110 lower part surface light for reading information recorded in the record layer is illuminated at an optic pickup device, and the optic pickup device senses light reflected at the reflecting layer 120.

And, the substrate 110 upper part is placed with a reader, and microwave illuminated from the reader penetrates the protective layer 130 and illuminates a print layer 162 distributed with the metal fibers, thereby sensing a unique ID contained in metal fibers distributed on the print layer.

Also, as shown in FIG. 6, a chipless RFID-purpose disk according to a fourth embodiment of the invention may be realized by forming on a protective 1ayer 130 upper part a print layer 163 distributed with metal fibers.

FIGS. 7a and 7b are schematic cross-section views for describing a chipless RFID-purpose disk according to a fifth embodiment of the invention.

A chipless RFID-purpose disk according to a fifth embodiment of the invention has a structure that metal fibers are distributed in a label printed layer 170 printed with product name, classification number, notices on treatment, size of product, and prices.

Such a label printed layer 170 is formed at the upper part surface of a protective layer 130.

At this time, as shown in FIG. 7a, all the protective layer 130 upper part surface may be formed with a label print layer 170, and as shown in FIG. 7b, the protective layer 130 upper part surface may be formed with a label printed layer 171 distributed with metal fibers.

FIGS. 8a and 8b are schematic conceptual views for describing a pattern of metal fibers distributed at a print layer applied to the invention.

Metal fibers are distributed in a print solution, and printed on at least one of a substrate, a reflecting layer and a protective layer.

Herein, each time a print layer distributed with the metal fibers is printed, a pattern made with metal fibers distributed with each of printed layer becomes different.

That is, before the print layer is printed, the metal fibers are distributed in a print solution of liquid state, and its position is randomly fixed on a print layer.

Therefore, as shown in FIGS. 8a and 8b, a print layer differentiates for a pattern made with metal fibers 300.

Thus, a chipless RFID-purpose disk of the invention may be beneficially employed for RFID (Radio-Frequency IDentification), since a pattern made of metal fibers distributed on a print layer becomes a sole pattern and can have a unique value.

FIG. 9 is a schematic flow diagram for describing a method of manufacturing a chipless RFID-purpose disk of the invention.

First, metal fibers are formed. (S100)

The metal fibers are formed by metal coating of textile fibers, or formed by grinding metal material.

That is, each of the metal fibers is comprised of a textile fiber; and a metal layer coating the textile fiber, or comprised of a metal fiber of single material.

After that, the metal fibers will be distributed into an object solution. (S110)

Herein, that the object solution is a print solution is preferable.

And the next, during a process of forming a reflecting layer in a recording layer of a substrate having a recorded layer and forming a protective layer in the reflecting layer, an object solution distributed with the metal fibers will be printed in at least one of the substrate, the reflecting layer and the protective layer. (S120)

FIGS. 10a through 10c are conceptional views showing a metal fibers distributed state applied to the invention.

Metal fibers have a shape thin in thickness and long in length, or have at least one of a curved or intersected shape.

Therefore, like FIG. 10a, they are distributed as a single state, or, such as FIG. 10b, a metal fiber having two curved ones may be distributed.

And, as shown in FIG. 10c, those may be distributed into a state in which at least two are intersected.

While the present invention have been concretely described about only a specific example, it would be understood by those skilled in the art that any embodiment of various modifications and alterations can be made within the scope of the invention technology, and such modifications and alterations must fall in the accompanying claims.

The present invention realizes a chipless RFID-purpose disk formed with a print layer distributed with metal fibers, thereby discriminating whether to be a real-made disk or an unlawful disk using a print layer distributed with the metal fibers, and capable of easily realizing a real-made disk protective against an illegal copy.

Claims

A chipless RFID-purpose disk, characterized by:

a substrate formed with a recorded layer;

a reflecting layer formed on a recorded layer of the substrate;

a protective layer formed on the reflecting layer, and

wherein at least one of the substrate, the reflecting layer and the protective layer is formed with a printed layer distributed with metal fibers.
The system of claim 1, wherein a central area of the substrate is formed with a through hole,

a substrate area not formed with the record layer is formed about the through hole, and

a print layer distributed with the metal fibers is formed in a substrate area not formed with the record layer.
The system of claim 1, wherein the substrate is divided into a record area and a non-record area, and the non-record area is formed with a print layer distributed with metal fibers.
The system of claim 3, wherein the non-record area is a through hole surrounding area of the substrate.
The system of claim 3, wherein the print layer distributed with the metal fibers is formed in a substrate lower area of the non-record area.
The system of claim 1, wherein the print layer distributed with the metal fibers is formed between the reflecting layer and the protective layer.
The system of claim 1, wherein the print layer distributed with the metal fibers is a label print layer distributed with the metal fibers.
The system of claim 1, wherein the metal fibers have a shape thin in thickness and long in length, or have at least one of a curved or intersected shape.
The system of claim 1, wherein each of the metal fibers is comprised of a textile fiber; and a metal layer coated at the textile fiber, or comprised of a metal fiber of single material.
The system of claim 1, wherein the chipless RFID-purpose disc is one of a CD (Compact Disc), a DVD (Digital Versatile Disc), a BD (Blu-ray Disc), and a HD-DVD (High Definition Digital Versatile Disc).