JP2008207875A - Optical disk case, optical disk tray, card member and manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To permit a reader/writer to easily communicate with a noncontact IC chip on an optical disk when it gets close from a case side face vertical to a recording surface of the disk. <P>SOLUTION: A base 31 and a cover 32 are connected to be rotatable around their respective edges, and a disk tray 33 is fitted with an internal surface of the base 31. The disk tray 33 is equipped with a protruding disk holder 36 for holding the optical disk and with a booster antenna unit 20a having antenna coils 21 and 22 formed on a substrate fixed. The antenna coil 21 is positioned to have its center aligning with the center of the disk holder 36 and also in parallel with a principal plane of the cover 32. The booster antenna unit 20a is placed on the disk tray 33 so that the antenna coil 22 comes into contact or proximity with a side face 38 of a case body in parallel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical disc case in which an optical disc is accommodated, an optical disc tray and a card member mounted in the case, an optical disc case and a method for manufacturing the optical disc tray, and in particular, an optical disc on which a non-contact type IC chip is mounted. The present invention relates to an optical disc case, an optical disc tray, a card member, an optical disc case and an optical disc tray manufacturing method suitable for the above.

  In recent years, optical discs such as CD (Compact Disc) and DVD (Digital Versatile Disk) are widely used as recording media capable of recording large-capacity data such as video. Further, as an optical disc, not only a read-only disc called ROM (Read Only Memory) type but also a write-once disc called “Recordable” and a rewritable disc called “ReWritable” are common.

  On the other hand, non-contact IC (Integrated Circuit) chips that can exchange information without contact with a reader / writer on the terminal side start connection due to factors such as no physical contact required when communicating with the terminal device. The processing time until the end of the connection can be shortened, and there are features such as high security by advanced mutual authentication and cryptographic processing. For this reason, it is spreading in applications such as electronic money, transportation tickets, and admission cards.

  Conventionally, it has been considered to mount a non-contact type IC chip having such excellent characteristics on a substrate of an optical disk. For example, an IC chip and an antenna for transmitting and receiving the IC chip are integrated into a gap formed between the concave portions when the disc substrates are bonded to each other after the concave portions are formed on the two disc substrates. An arranged optical disk is considered (see, for example, Patent Document 1).

  By the way, communication is performed between the non-contact type IC chip and the reader / writer using an electromagnetic wave by an antenna provided in each. However, depending on the shape of each antenna, directivity may occur during transmission / reception due to the characteristics of electromagnetic waves, so depending on the strength of the electromagnetic waves generated by each antenna and the positional relationship between the antennas, communication may not be possible. Arise.

  In particular, in an electromagnetic induction non-contact IC card or RFID (Radio Frequency Identification) represented by a communication frequency of 13.56 MHz, the antenna coil of the non-contact IC chip and the antenna coil on the reader / writer side face each other. When communication is performed, the communication state is improved so that communication may not be possible when the directions of the antenna coils are orthogonal (that is, when the normals of the antenna coils are orthogonal). is there.

On the other hand, there is known a technique for improving a communication state by using a relay antenna called a booster antenna when good communication cannot be performed due to the positional relationship between the antennas. For example, by providing a booster antenna in a storage case for a recording medium, information storage medium management that enables communication between a non-contact type IC chip mounted on the recording medium and a reader / writer provided on the storage shelf A system has been considered (see, for example, Patent Document 2).
JP-A-9-245381 (paragraph numbers [0011] to [0014], FIG. 1) Japanese Patent Laying-Open No. 2005-339170 (paragraph numbers [0020] to [0025], FIG. 1)

  By the way, an optical disk is usually stored in a dedicated storage case, and a large number of optical disks stored in the storage case are often placed on a storage shelf. Accordingly, it is naturally conceivable that the optical disk on which the non-contact type IC chip as described above is mounted is also placed on the storage shelf in the same manner as in the storage case. However, in such a state, since the optical disks in the storage shelf are in a state where the recording surfaces are close to each other and face each other, the antenna surface of the reader / writer cannot be brought close to the recording surface in parallel. It becomes very difficult to communicate with.

  For example, in the case where the surfaces parallel to the recording surface of the optical disc (hereinafter referred to as the main surface of the case) are arranged close to each other in the storage case, the antenna surface of the reader / writer and the optical disc In order to bring the antenna close to the opposite state, it is necessary to perform an operation such as spacing between adjacent storage cases or pulling out individual storage cases. For this reason, if it is going to communicate sequentially with the non-contact type | mold IC chip of the some optical disk in a storage case sequentially, the above complicated operation will be needed and will take time.

  As described above, even when the optical disk is placed in the storage case and placed on the storage shelf, the reader / writer is held from the side surface of the case perpendicular to the main surface of the case, so that the non-contact type IC chip on the optical disk It is desirable to enable easy communication between the two. In particular, optical disc storage cases, such as jewel cases and tall cases, which have some specific structures are widely used. There is a demand for easy communication with a non-contact type IC chip in a state.

  Further, in the above-mentioned Patent Document 2, as a method for communicating with a non-contact type IC chip of an optical disc in a state where the optical disc is placed in a storage case and placed on a storage shelf, a method for a non-contact type IC chip is described. Using a storage shelf in which a reading coil or an antenna board on which a plurality of the reading coils are arranged are arranged so as to be integrated with a partition plate or a shelf plate, and when the storage case is placed at the predetermined position, The storage case is provided with a booster so that it can communicate with the non-contact type IC chip. However, this configuration requires a dedicated storage shelf that is integrated with the reading device, so it cannot be handled by a storage shelf that is already used by the user, and a portable general-purpose reading device may be used. Can not.

  The present invention has been made in view of such a problem, and can easily communicate with a non-contact type IC chip on an optical disk even when a reader / writer is brought close to the case side surface perpendicular to the recording surface of the optical disk, and An object of the present invention is to provide an optical disc case in which the basic structure is not greatly changed from the existing one, an optical disc tray and a card member for the optical disc case, and an optical disc case and an optical disc tray manufacturing method.

  In the present invention, in order to solve the above-described problem, in the optical disc case in which the optical disc is accommodated, the front cover portion and the rear cover portion are connected so as to be rotatable around the end portions of the respective main surfaces, A central shape formed on the optical disc on the inner side of the main surface of the back cover portion and configured to form a box-shaped outer shape when the main surfaces of the front cover portion and the back cover portion are closed so as to face each other. A convex holding portion for fitting the hole to hold the optical disc is provided, and further includes a booster antenna that connects the first antenna and the second antenna and relays signals transmitted and received respectively. The first antenna is disposed such that a center portion thereof coincides with a center of the convex holding portion and an outer shape thereof is parallel to a main surface of the back cover portion, and the second antenna The booster antenna is disposed so that the outer shape of the antenna is in contact with or close to one side surface when the front cover portion and the back cover portion are closed. An optical disc case is provided.

  In such an optical disc case, the optical disc is held by the convex holding portion inside the main surface of the back cover portion. Further, the first antenna of the booster antenna is arranged so that the center portion thereof coincides with the center of the convex holding portion and the outer shape thereof is parallel to the main surface of the back cover portion. Therefore, when the optical disc provided with the non-contact type IC chip and the non-contact communication antenna formed around the rotation center of the optical disc is held by the convex holding portion, Signals can be transmitted to and received from one antenna.

  On the other hand, the second antenna of the booster antenna is arranged so that its outer shape is in contact with or close to one side surface when the front cover portion and the rear cover portion are closed. Therefore, when the reader / writer of the IC chip is brought close to the side surface corresponding to the position of the second antenna with the optical disc case closed, a signal is transmitted between the antenna provided to the reader / writer and the second antenna. In this state, the reader / writer and the IC chip on the optical disc can communicate with each other.

  Further, in order to solve the above-described problems, the present invention has a function of holding an optical disc, and the front cover portion and the rear cover portion are connected so as to be rotatable around the end sides of the respective main surfaces. An optical disc case in which the optical disc is accommodated by being disposed in a case housing configured by fitting the optical disc with the holding surface of the optical disc facing the inside of the case housing to the back cover portion. And a convex holding portion that is provided on one surface and fits into a central hole formed in the optical disc to hold the optical disc, and is formed in a substantially flat plate shape, and includes a first antenna. And a second antenna, and a booster antenna that relays signals transmitted and received by each of the first antenna and the center of the first antenna coincides with the center of the convex holding portion. As described above, the optical disk is characterized in that the booster antenna is disposed so that the second antenna protrudes from the end of the optical disk tray, and is disposed and fixed to the holding surface of the optical disk or the back surface thereof. A tray is provided.

  In such an optical disc tray, the optical disc is held by fitting the center hole of the optical disc into the convex holding portion. Further, the first antenna of the booster antenna is disposed and fixed on the holding surface of the optical disc or the back surface thereof so that the center portion thereof coincides with the center of the convex holding portion. Therefore, when the optical disc provided with the non-contact type IC chip and the non-contact communication antenna formed around the rotation center of the optical disc is held by the convex holding portion, Signals can be transmitted to and received from one antenna.

  On the other hand, since the second antenna of the booster antenna is disposed so as to protrude from the end of the optical disc tray, when the optical disc tray is fitted to the back cover portion of the optical disc case, the second antenna It arrange | positions so that the external shape may contact | abut or adjoin with respect to one side surface when a cover part and a back surface cover part are obstruct | occluded in parallel. Therefore, when the reader / writer of the IC chip is brought close to the side surface corresponding to the position of the second antenna with the optical disc case closed, a signal is transmitted between the antenna provided to the reader / writer and the second antenna. In this state, the reader / writer and the IC chip on the optical disc can communicate with each other.

  In the present invention, in order to solve the above-mentioned problem, the front cover portion and the rear cover portion are connected in a foldable state at both ends of the side surface portion constituting one side surface when closed, And an optical disc case configured to have a box-shaped outer shape when each main surface of the back cover portion is closed so as to face each other, the front cover portion, the back cover portion, and the side surface portion In the card member which can be mounted so as to cover the outer surface, the first antenna and the second antenna are connected to each other, and there is a booster antenna that relays signals transmitted and received by the first antenna and the second antenna. And the booster antenna is disposed such that the second antenna is disposed in the region corresponding to the side surface portion, and Over static antenna, the card member, wherein the is bendable at the portion corresponding to the boundary of the back cover portion and the side surface portion is provided.

  In such a card member, when the first antenna of the booster antenna is disposed so as to cover the outer surface of the front cover portion, the rear cover portion, and the side surface portion of the optical disc case, It arrange | positions in the area | region corresponding to a cover part. Therefore, when an optical disc provided with a non-contact IC chip and an antenna for non-contact communication formed around the rotation center of the optical disc is held inside the back cover portion of the optical disc case, the optical disc Signals can be transmitted and received between the upper antenna and the first antenna.

  On the other hand, the second antenna of the booster antenna is a region corresponding to the side surface portion of the optical disk case when the card member is disposed so as to cover the outer surface of the front surface cover portion, the back surface cover portion, and the side surface portion of the optical disk case. Placed in. Accordingly, when the reader / writer of the IC chip is brought close to the side surface portion of the optical disc case with the optical disc case closed, signals can be transmitted and received between the antenna provided in the reader / writer and the second antenna. In this state, the reader / writer and the IC chip on the optical disc can communicate with each other.

  Further, in the present invention, in order to solve the above problems, the front cover part and the rear cover part connected in a rotatable state around the end part side of each main surface, and the rear cover part are fitted, A disc tray member for holding the optical disc by fitting a convex holding portion provided on one surface into a central hole formed in the optical disc, and each main surface of the front cover portion and the back cover portion Is a card member housed between the disc tray member and the back cover portion in an optical disc case configured to form a box-shaped outer shape when closed so as to face each other across the disc tray member. A first antenna and a second antenna are connected to each other, and each has a booster antenna that relays signals transmitted and received, and the first antenna includes: Is arranged so that the center portion thereof coincides with the center of the convex holding portion and the outer shape thereof is parallel to the main surface of the back cover portion, and the second antenna is connected to the front cover portion. The disk tray member side or the back cover part side is in contact with or close to one side surface when the back cover part is closed so that the outer shape of the side surface is parallel to the side surface. A card member is provided in which a booster antenna is fixed.

  In such a card member, when the first antenna of the booster antenna is accommodated between the disk tray member and the back cover portion, the center portion thereof coincides with the center of the convex holding portion. Placed in. Therefore, when an optical disc provided with a non-contact IC chip and an antenna for non-contact communication formed around the rotation center of the optical disc is held inside the back cover portion of the optical disc case, the optical disc Signals can be transmitted and received between the upper antenna and the first antenna.

  On the other hand, the second antenna of the booster antenna has a parallel outer shape with respect to one side face in a state where the optical disk case is closed when the card member is accommodated between the disk tray member and the back cover portion. It arrange | positions so that it may contact | abut or adjoin in a state. Therefore, when the reader / writer of the IC chip is brought close to the side surface corresponding to the position of the second antenna with the optical disc case closed, a signal is transmitted between the antenna provided to the reader / writer and the second antenna. In this state, the reader / writer and the IC chip on the optical disc can communicate with each other.

  According to the optical disc case of the present invention, an optical disc provided with a non-contact type IC chip and an antenna for non-contact communication formed around the rotation center of the optical disc is held by the convex holder, and With the optical disk case closed, the reader / writer of the IC chip is brought close to the side surface of the case corresponding to the position of the second antenna, so that communication can be reliably performed between the reader / writer and the IC chip on the optical disk. It becomes like this. Further, the above-described effects can be obtained by arranging a booster antenna in the optical disk case without changing the basic configuration of the optical disk case that has already been widely used.

  Further, according to the optical disc tray of the present invention, the optical disc tray includes an optical disc case configured by connecting the front cover portion and the rear cover portion in a state where the front cover portion and the rear cover portion are rotatable around the end portions of the respective main surfaces. Inside the case housing, it is arranged by fitting the holding surface of the optical disc to the back cover part with the inside of the case housing facing inside, and centering on the rotation center of the non-contact type IC chip and the optical disc An IC chip reader is formed on the side of the case corresponding to the position of the second antenna when the optical disk provided with the formed non-contact communication antenna is held by the convex holding portion and the optical disk case is closed. By bringing the / writer close, communication between the reader / writer and the IC chip on the optical disc can be reliably performed. Further, the above effect can be obtained by arranging a booster antenna on the optical disc tray constituting the optical disc case without changing the basic configuration of the optical disc case that has already been widely spread.

  Furthermore, according to the card member of the present invention, the card member is disposed so as to cover the outer surface of the front cover portion, the rear cover portion, and the side surface portion of the optical disc case, and the inside of the rear cover portion of the optical disc case. In addition, an optical disc provided with a non-contact type IC chip and a non-contact communication antenna formed around the rotation center of the optical disc is held and the optical disc case is closed in a state where the optical disc case is closed. By bringing the reader / writer of the IC chip close to the side surface, it becomes possible to reliably communicate between the reader / writer and the IC chip on the optical disc. Further, the above-described effects can be obtained only by disposing the card member so as to cover the outer surface of the optical disc case without changing the configuration of the optical disc case that has already been widely spread.

  Further, according to the card member of the present invention, the card member is accommodated between the disc tray member and the back surface cover portion, and a non-contact type IC chip is provided inside the back surface cover portion of the optical disk case, When an optical disc provided with a non-contact communication antenna formed around the rotation center of the optical disc is held and the optical disc case is closed, an IC chip reader / writer is attached to the side surface of the optical disc case. By bringing them close to each other, it is possible to reliably communicate between the reader / writer and the IC chip on the optical disk. Further, the above-described effects can be obtained only by disposing a card member between the disc tray member and the back surface cover portion without changing any configuration of the optical disc case that has already been widely spread.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, a basic structure of an optical disk with a non-contact IC chip used in each embodiment and a communication method between the IC chip on the optical disk will be described.

FIG. 1 is a plan view showing a configuration example of an optical disc on which a non-contact type IC chip is mounted.
The optical disc 1 shown in FIG. 1 has the following basic features common to general optical disc media such as CD, DVD, Blu-ray Disc (registered trademark of Sony Corporation), HD DVD (registered trademark), etc. It has a typical structure. That is, the optical disc 1 is provided with a central hole 2 in the center, and when the optical disc 1 is inserted into a disc drive, the optical disc 1 is rotated around the central hole 2 and laser light is emitted to the signal recording surface. Irradiated and a signal is read according to the amount of reflected light.

  A region outside the center hole 2 of the optical disc 1 by a predetermined distance is a signal recording region 3 on which a reflective film made of a conductive material such as Ag (silver) or Al (aluminum) is formed. In the case of a writable optical disc, a recording film, a dielectric film, and the like are further formed in the signal recording area 3 in addition to a reflective film.

  The area between the signal recording area 3 and the center hole 2 is an area for chucking the optical disk 1 in the disk drive, and is called a chucking area 4 or the like. The chucking area 4 is provided with a non-contact type IC chip 5 and an antenna coil 6 for the IC chip 5 to communicate with an external reader / writer in a non-contact manner. In the example of FIG. 1, the antenna coil 6 has a three-turn spiral shape. The antenna coil 6 having such a shape is suitable, for example, when a short wave band represented by 13.56 MHz is used as a communication frequency.

  The antenna for non-contact communication of the IC chip 5 has a spiral shape (or a loop shape) around the rotation axis in the region around the center hole 2 in order to maintain the weight balance when the optical disc 1 is rotated. It is desirable to be provided. Such an antenna is not limited to the chucking area 4 as shown in FIG. 1, and is provided, for example, on the back surface of the area where the reflective film is formed or on the disk substrate on the outer edge of the disk. May be. However, when the antenna is arranged in the chucking area 4 and the vicinity thereof, there is an advantage that the processing area for the optical disc 1 can be reduced. Further, by arranging the antenna so as to avoid the film formation area of the reflection film, there are merits such as that signals can be recorded on both sides of the disk and electromagnetic effects due to the reflection film can be reduced.

FIG. 2 is a diagram for explaining antenna arrangements on the IC chip side and the reader / writer side when performing contactless communication.
When good communication with the IC chip 5 on the optical disk 1 is performed, the antenna coil 11 on the reader / writer side faces the antenna coil 6 on the IC chip 5 side as shown in FIG. It is desirable that they are coaxial with each other. However, as the positional relationship between the antenna coil 6 on the IC chip 5 side and the antenna coil 11 on the reader / writer side deviates from the above state, the communication state between them deteriorates. As shown in FIG. 2 (B), the antenna coil 11 on the reader / writer side is further outside the outer edge of the optical disc 1, and the respective axes of the antenna coil 11 and the antenna coil 6 on the IC chip 5 side. When the two are orthogonal, communication is often impossible.

  In this way, even when good communication is impossible due to the positional relationship between the antennas, good communication is possible by using the booster antenna that mediates communication between the antennas. In the booster antenna shown in FIG. 2B, an antenna coil 21 facing the antenna coil 6 on the IC chip 5 side and an antenna coil 22 facing the antenna coil 11 on the reader / writer side are connected via a tuning circuit 23. Connected to each other. By using such a booster antenna, the communication state between the antenna coil 6 on the IC chip 5 side and the antenna coil 11 on the reader / writer side can be improved.

FIG. 3 is a diagram schematically showing a circuit configuration necessary for communication between the IC chip and the reader / writer via the booster antenna.
First, the IC chip 5 provided in the optical disc 1 is composed of a modulation / demodulation circuit, a control circuit, a nonvolatile storage medium, and the like for signals transmitted to and received from the reader / writer 10. Here, as an example, the IC chip 5 communicates with the reader / writer 10 using electromagnetic waves, and the IC chip 5 does not have a battery, and electromagnetic induction from electromagnetic waves supplied from the reader / writer 10 side. Operating power shall be obtained. An antenna coil 6 for transmitting / receiving electromagnetic waves to / from the reader / writer 10 side is connected to the IC chip 5 via a tuning circuit 7. The tuning circuit 7 comprises, for example, a coil, a capacitor, a resistor, etc., and the parameters of these circuit components are selected so that the circuit including the antenna coil 6 and the tuning circuit 7 forms a resonant circuit that resonates at the communication frequency.

  On the other hand, the main circuit 12 of the reader / writer 10 includes, for example, a signal transmitted / received to / from the IC chip 5 and a modulation / demodulation circuit for power supply electromagnetic waves. The main circuit 12 is connected to the IC chip 5 side via an antenna coil 11 for transmitting and receiving electromagnetic waves and a tuning circuit 13. The function of the tuning circuit 13 is the same as that of the tuning circuit 7 on the IC chip 5 side.

  As described above, the booster antenna 20 includes antenna coils 21 and 22 corresponding to the IC chip 5 side and the reader / writer 10 side, respectively, and a tuning circuit 23 that connects them. The function of the tuning circuit 23 is the same as that of the tuning circuits 7 and 13, and adjusts the impedance to match the communication frequency of the signal transmitted and received between the IC chip 5 and the reader / writer 10. For example, a coil, a capacitor, and a resistor.

  When the impedance of each antenna coil 21 and 22 is matched with the communication frequency, the tuning circuit 23 is not particularly necessary. In this case, the antenna coils 21 and 22 can be directly connected. Similarly, the tuning circuit 7 on the IC chip 5 side and the tuning circuit 13 on the reader / writer 10 side may be provided as necessary.

  Next, the optical disk case according to the embodiment will be specifically described. In each of the following embodiments, the antenna coil 6 on the IC chip 5 side and the antenna coil 11 on the reader / writer 10 side are shown in FIG. The booster antenna 20 having the positional relationship as shown in FIG. Thereby, even when the reader / writer 10 is brought close to the normal direction of the optical disc 1 as shown in FIG. 2B in a state where the optical disc 1 is accommodated in the optical disc case, good communication can be performed.

[Embodiment 1-1]
FIG. 4 is a diagram showing the outer shape of the optical disc case according to Embodiment 1-1.
In FIG. 4, an optical disk case 30 is a resin-made storage case in which the optical disk 1 is mounted. The outer shape of the optical disk case 30 is a rectangular parallelepiped whose thickness is perpendicular to the disk surface. Further, a booster antenna 20 for transferring signals to and from an external reader / writer 10 is formed on a side surface connected to one side of a surface parallel to the disk surface (case main surface). An antenna coil 22 is provided. In the example of FIG. 4, an antenna coil 22 for communicating with the reader / writer 10 is provided on the side surface on the connecting portion side where the cover portion is rotatably connected to the base portion of the optical disc case 30. The other antenna coil 21 (not shown) constituting the booster antenna 20 is provided inside the optical disk case 30 so as to face the antenna coil 6 on the mounted optical disk 1 in close proximity. Detailed configurations of the optical disc case 30 and the booster antenna 20 will be described later.

  Thus, by providing the antenna coil 22 of the booster antenna 20 along the side surface of the optical disc case 30, the reader / writer 10 is placed with the antenna coil 11 of the reader / writer 10 facing each other as shown in FIG. Can be communicated between the reader / writer 10 and the IC chip 5 on the optical disc 1.

  In particular, when a large number of such optical disk cases 30 are accommodated in a storage shelf, the optical disk cases 30 are in contact with (or close to) each other on a surface (case main surface) parallel to the disk surface. It is impossible to communicate with the IC chip 5 by holding the reader / writer 10 over the terminal. However, since at least one side surface of the optical disk case 30 is exposed to the outside even when stored in the storage shelf, if the antenna coil 22 of the booster antenna 20 is provided on this side surface as shown in FIG. When the reader / writer 10 is held over, communication with the IC chip 5 becomes possible.

  If communication with the IC chip 5 on the optical disk 1 is possible while being stored in the storage shelf, for example, information such as music is recorded on the IC chip 5 and this information is read out by the reader / writer 10 and displayed on the display device. Or, when information that matches the specified keyword is recorded on the IC chip 5, it can be used to facilitate the search of the optical disc 1 on which the desired music or data is recorded, such as by voice or light. become.

  Note that FIG. 4 shows an example of the reader / writer 10 dedicated to the non-contact type IC chip, but the shape and configuration of the reader / writer 10 are merely examples. As another configuration of the reader / writer, for example, a reader / writer function is provided in a remote controller for a reproducing / recording device of the optical disc 1, and an antenna coil is disposed at the tip of the remote controller. Conceivable.

FIG. 5 is an exploded perspective view of the optical disc case according to Embodiment 1-1.
As shown in FIG. 5, the optical disc case 30 of the present embodiment is basically composed of a base portion 31 and a cover portion 32 that constitute an external housing, and a disc tray 33 accommodated inside them. The The base portion 31 and the cover portion 32 are connected in a rotatable state at the connecting portion 34, and the cover portion 32 opens and closes with respect to the base portion 31 around the connecting portion 34. Further, when the cover portion 32 is closed, the cover portion 32 is fitted to the base portion 31 to form a box-shaped outer shape, and the inside is sealed.

  The disc tray 33 is a member on which the optical disc 1 is mounted, and is fitted inside the base portion 31. The disc tray 33 is formed with a circular concave disc placement surface 35 on which the optical disc 1 is placed, and a convex disc holding portion 36 is formed at the center thereof. The periphery of the disk holding part 36 has elasticity, and the center hole 2 of the optical disk 1 is fitted into the disk holding part 36 to hold the optical disk 1.

  The optical disc case 30 composed of the base member 31, the cover portion 32, and the disc tray 33 is most commonly distributed mainly as a storage case for a CD. It is called “case”. The base part 31, the cover part 32, and the disc tray 33 are formed of, for example, a polystyrene resin material. Generally, at least the base part 31 and the cover part 32 are formed of a transparent resin material. Further, the base part 31 and the cover part 32 and the internal disk tray 33 may be manufactured by different manufacturers and distributed separately.

  In this embodiment, the booster antenna 20 for communicating with the IC chip 5 on the optical disk 1 accommodated in the optical disk case 30 is provided on the disk tray 33. As shown in FIG. 6, in this embodiment, the booster antenna 20 is configured as a booster antenna unit 20a in which antenna coils 21 and 22 are integrated with a substrate.

FIG. 6 is a diagram illustrating a configuration of the booster antenna unit.
As shown in FIG. 6, the booster antenna unit 20a includes an antenna coil 21 for communication with the IC chip 5, an antenna coil 22 for communication with the reader / writer 10, and connections for connecting the antenna coils 21 and 22. The booster antenna 20 including the wiring 24 is formed on the flexible substrate 25. Each of the antenna coils 21 and 22 and the connection wiring 24 are formed by forming a metal material such as aluminum (Al) on the flexible substrate 25 in a thin plate shape (or thin film shape) by printing or the like.

  A central hole 26 is formed in the central region of the antenna coil 21 on the IC chip 5 side for allowing the disk holding portion 36 of the disk tray 33 to penetrate the flexible substrate 25. Further, in this example, bent portions 27 a to 27 c for matching the surface shape of the disk tray 33 are formed in the area between the antenna coils 21 and 22 in the flexible substrate 25.

  It should be noted that the antenna diameter and the number of turns of the antenna coils 21 and 22 can be satisfactorily communicated according to the antenna diameter and the number of turns of the antenna coil 6 on the IC chip 5 side and the antenna coil 11 on the reader / writer 10 side, respectively. It only has to be determined appropriately so that it can be done.

  The circuit configuration of the booster antenna 20 formed in the booster antenna unit 20a is as shown in FIG. FIG. 6 shows an example of a booster antenna unit 20a in which the tuning circuit 23 is not formed. In the case where the tuning circuit 23 is necessary, in FIG. 6, for example, the tuning circuit 23 may be provided in a region of the flexible substrate 25 where the connection wiring 24 is formed.

  As described above, the tuning circuit 23 includes, for example, a coil, a capacitor, and a resistor. As a specific configuration example of the tuning circuit 23, for example, by connecting a pair of electrodes of a capacitor (chip capacitor) to a pair of connection wires 24, a capacitor is connected in parallel to the antenna coils 21 and 22. . At this time, the impedance can be changed by adjusting the capacitance of the capacitor, and as a result, the impedance matching with respect to the communication frequency can be adjusted.

FIG. 7 is an exploded perspective view of a disk tray and a booster antenna unit constituting the optical disk case.
The optical disc case 30 of the present embodiment is manufactured by the following processes, for example. First, as described above, the booster antenna unit 20a in which the antenna coils 21 and 22 and the connection wiring 24 are formed on the flexible substrate 25 by printing or the like is manufactured in a flat state as shown in FIG. . On the other hand, the disc tray 33 is formed by injection molding or the like.

  Next, after the bent portions 27a to 27c of the booster antenna unit 20a are bent in a predetermined direction, the booster antenna unit 20a has the center hole 26 aligned with the disc holding portion 36 of the disc tray 33. The disk tray 33 is fixed to the upper surface (the surface on the disk mounting surface 35 side). In this example, the back surface of the flexible coil 25 on which the antenna coil 21 and the connection wiring 24 are formed is fixed to the disk tray 33. As a result, the antenna coil 21 is disposed so as to surround the periphery of the disc holding portion 36, and when the optical disc 1 is fitted to the disc holding portion 36, the disc-side antenna coil 6 and the tray-side antenna coil 21 It is possible to reliably send and receive signals by electromagnetically coupling between them.

  Here, the flexible substrate 25 and the disc tray 33 are, for example, an adhesive or adhesive material such as an ultraviolet curable resin, a hot melt resin, an epoxy resin, a cyanoacrylate, or a synthetic rubber (preferably a styrene-butadiene rubber). Glued by etc. At this time, a primer may be applied to the adhesive surface in advance, and the adhesive surface may be modified so that the adhesive surface is more reliably bonded.

  In the present embodiment, the disc tray 33 is provided with a convex portion 37 in a region on the side of the connecting portion 34 where the base portion 31 and the cover portion 32 are connected when the disc tray 33 is later disposed on the base portion 31. The bent portions 27 a to 27 c of the booster antenna unit 20 a are bent so as to be in close contact with the surface of the convex portion 37. As a result, the region of the flexible substrate 25 on which the antenna coil 22 is formed is bent downward at the end of the convex portion 37 so as to be perpendicular to the disk mounting surface 35. The disc tray 33 having such a convex portion 37 is the most common in the jewel case type optical disc case 30, and the booster antenna having the above-described configuration can be obtained without performing any processing on the existing disc tray 33. The unit 20a can be fixed.

  Further, when mounting the booster antenna unit 20a, the center hole 26 is aligned with the disk holding portion 36 of the disk tray 33, for example, without being bent before the mounting to the disk tray 33. The bent portions 27a to 27c may be bent by pressing from above in the state.

  Further, as another configuration, for example, a notch portion in which the region of the connection wiring 24 of the booster antenna unit 20a is fitted to the convex portion 37 of the disc tray 33 is provided, and the booster antenna unit 20a is bent. The portions 27b and 27c may be fixed to the disc tray 33 in a flat state without being bent. In this case, the antenna coil 22 may be bent upward at the bent portion 27a.

  Further, the booster antenna 20 is not limited to the configuration integrated with the substrate as in the present embodiment, and may be configured only from a thin metal wire, for example. In this case, the antenna coils 21 and 22 may be formed as air-core coils wound by a winding machine, for example.

  While the booster antenna unit 20a is attached to the disc tray 33 by the above process, the base portion 31 and the cover portion 32 are formed by injection molding, and they are rotatably connected at the connecting portion 34. Then, with the cover portion 32 opened, the disc tray 33 to which the booster antenna unit 20 a is fixed is fitted and fixed inside the base portion 31. At this time, the antenna coil 22 of the booster antenna unit 20a is disposed so as to be in close contact with the inside of the side surface 38 (see FIG. 5) on the rotation center side of the base portion 31 at the lower portion of the end portion of the convex portion 37 of the disk tray 33. Is done.

  In the optical disk case 30 having the above-described configuration, parts in a state where the booster antenna unit 20a is fixed to the disk tray 33 are distributed, and these parts are separated from the base part 31 and the cover part 32 distributed separately. It may be attached by the manufacturer or user.

  Of course, the cover portion 32 may be coupled to the base portion 31 after the disc tray 33 is fitted to the base portion 31. Alternatively, the booster antenna unit 20a may be fixed on the disc tray 33 after the base portion 31, the cover portion 32, and the disc tray 33 are all assembled.

  In Embodiment 1-1 described above, the structure and shape of an existing jewel case type optical disc case are not changed (or only slightly processed or changed in shape with respect to the original shape) in a simple process. A booster antenna 20 can be mounted. As a result, when the reader / writer 10 is brought close to the side surface 38 of the base portion 31 in a state of facing the side surface 38, communication between the reader / writer 10 and the IC chip 5 of the optical disc 1 can be performed. .

  Further, when the disc tray 33 with the booster antenna unit 20a fixed thereto is sold alone, a user who already owns an existing jewel case type optical disc case does not replace the entire case. Instead, it is possible to enjoy the benefits of the additional functions just by purchasing and replacing only the internal disk tray.

  Note that the antenna coil 22 of the booster antenna unit 20a may basically be disposed so as to abut (or be close to) one of the side surfaces connected to the four sides of the tray mounting surface of the base portion 31. . That is, it is possible to communicate with the IC chip 5 on the optical disc 1 by holding the reader / writer 10 over the side surface on which the antenna coil 22 is in contact.

  However, in the optical disc case 30 having the above-described configuration, generally, a paper member is disposed inside the side surface 38 on the rotation center side of the cover portion 32, and a title of content recorded on the optical disc 1 through the side surface 38 is stored. It is often displayed. For this reason, when the optical disk case 30 is stored in the storage shelf, the side surface 38 is often exposed to the outside of the storage shelf. Further, by disposing the antenna coil 22 on the side surface 38 side, the user contacts the antenna coil 22 and breaks it when the optical disk 1 is attached / detached as compared with the case where the antenna coil 22 is disposed on the other side surface. The situation can be prevented. From this point of view, it is most preferable that the antenna coil 22 is disposed so as to abut against the side surface 38. In all the embodiments described in this specification, the reader / An example in which an antenna coil 22 for communication with the writer 10 is provided will be shown.

[Embodiment 1-2]
FIG. 8 is an exploded perspective view of the optical disc case according to Embodiment 1-2.
An optical disk case 30a shown in FIG. 8 is a modification of the optical disk case 30 of the embodiment 1-1, and the booster antenna unit 20b is disposed not on the disk mounting surface 35 side of the disk tray 33 but on the back surface thereof. It has been done. In the booster antenna unit 20b mounted on the optical disc case 30a, the antenna coil 22 for communication with the reader / writer 10 is bent upward with a bent portion 27a between the connection wiring 24 as a boundary and perpendicular to the main surface of the case. State.

  When manufacturing such an optical disk case 30a, for example, the booster antenna unit 20b is fixed to a surface opposite to the disk mounting surface 35 of the disk tray 33 after being bent at the bent portion 27a. . The disc tray 33 to which the booster antenna unit 20 b is fixed is fitted inside the base portion 31, and the cover portion 32 is connected to the base portion 31 at the connecting portion 34. In the booster antenna unit 20b, the bent portion 27a may be bent by being pressed when the disc tray 33 is attached to the base portion after being fixed to the disc tray 33 in a flat state as a whole. . Further, the disk tray 33 to which the booster antenna unit 20b is fixed may be distributed. Further, after the booster antenna unit 20b is fixed inside the base portion 31, the disc tray 33 may be fitted from above.

  In such a process, when the booster antenna unit 20b is disposed, the optical disc 1 is accommodated in the disc tray 33 by aligning the center positions of the disc holding portion 36 and the central hole 26 of the booster antenna unit 20b. At this time, the antenna coil 6 on the IC chip 5 side and the antenna coil 21 on the booster antenna unit 20b side are electromagnetically coupled, and signals can be transmitted and received between them. Further, in the assembled optical disc case 30 a, the other antenna coil 22 of the booster antenna unit 20 b is in contact with the inside of the side surface 38 of the cover portion 32. Thus, communication between the reader / writer 10 and the IC chip 5 becomes possible by bringing the reader / writer 10 close to the side surface 38 from the outside.

[Embodiment 2]
FIG. 9 is a perspective view showing the configuration of the optical disc case according to the second embodiment.
The optical disc case 40 shown in FIG. 9 includes a base portion 41 and a cover portion 42, and the base portion 41 and the cover portion 42 are rotatably connected at a connecting portion 43. Further, unlike Embodiments 1-1 to 1-2, the disc mounting surface 44 and the disc holding portion 45 are integrally formed on the inner surface of the base portion 41, and the optical disc 1 is accommodated inside the base portion 41. It becomes the composition which is done. The base part 41 and the cover part 42 are formed of, for example, a polystyrene resin material. The optical disc case 40 having such a basic configuration has already been widely distributed as a storage case for a CD, a DVD, etc. thinner than the optical disc cases having the configurations shown in the embodiments 1-1 to 1-2. It is what.

  In the present embodiment, a booster antenna unit 20c having a booster antenna is fixed to the disk mounting surface 44 of the optical disk case 40. The configuration of the booster antenna unit 20c shown here is substantially the same as that of the booster antenna unit 20b shown in FIG. 8, and the antenna coil 22 on the reader / writer 10 side is bent at a bent portion 27a between the connecting wire 24 and the antenna coil 22. Thus, the antenna coil 21 for the IC chip 5 is in a vertical state. In the region where the connection wiring 24 of the flexible substrate 25 is formed, it may actually be formed so as to be appropriately bent along the unevenness of the inner surface of the base portion 41 so as to be in contact with the inner surface. Alternatively, a region for fixing the flexible substrate 25 on the inner surface of the base portion 41 may be formed in a flat state in advance.

  When the cover portion 42 is closed, the antenna coil 22 of the booster antenna unit 20c is in contact with the inner side of the end surface 46 on the connecting portion 43 side of the cover portion 42, so that the optical disc 1 is accommodated. When the cover part 42 is closed, the reader / writer 10 is brought close to the end face 46 from the outside, whereby communication between the reader / writer 10 and the IC chip 5 becomes possible. On the other hand, the center of the center hole 26 formed inside the antenna coil 21 and the center of the disk holding part 45 are aligned, and the antenna coil 21 and the IC chip 5 on the optical disk 1 are reliably electromagnetically coupled. .

  In the second embodiment, the booster antenna unit 20c is fixed to the inner surface of the base portion 41. However, the booster antenna unit 20c may be fixed to the inner surface of the cover portion 42.

[Embodiment 3-1]
10 to 13 are diagrams showing the configuration of the optical disc case according to Embodiment 3-1. 10 is a front view, FIG. 11 is a cross-sectional view taken along the line AA in FIG. 10, FIG. 12 is a cross-sectional view taken along the line BB in FIG. 10, and FIG.

  The optical disc case 50 of the present embodiment basically has a double-folded box shape having a front cover part 51a and a back cover part 51b. The front cover part 51a and the rear cover part 51b are connected to each other via a case side part 51c so as to be bent, and these are integrally formed of a resin material such as polypropylene. That is, the front cover part 51a and the rear cover part 51b are bent 90 degrees at the bent parts 52a and 52b, which are the boundary parts with the case side part 51c, respectively. At this time, the front cover part 51a and the rear cover part 51b face each other. The inside is sealed. At this time, the case side surface portion 51c is in a state perpendicular to the front surface cover portion 51a and the back surface cover portion 51b, and constitutes one side surface of the optical disc case 50.

  A disc placement surface 53a on which the optical disc 1 is placed and a convex disc holding portion 53b for holding the optical disc 1 are integrally formed on the inner surface of the back cover portion 51b. As in the above-described embodiments, the periphery of the disk holding portion 53b has elasticity, and the optical disc 1 is held by fitting the center hole 2 of the optical disc 1 into the disc holding portion 53b. On the other hand, the inner surface of the front cover 51a serves as a booklet storage surface 54a for storing a booklet for explaining contents recorded on the optical disc 1, for example, and holds a booklet on this surface. A convex locking portion 54b for stopping is formed.

  Furthermore, the outer surfaces of the front surface cover portion 51a, the back surface cover portion 51b, and the case side surface portion 51c (that is, the surface opposite to the disk placement surface 53a and the booklet storage surface 54a) are covered with a single transparent sheet 55. The transparent sheet 55 is fixed to the end portions of the front cover portion 51a, the rear cover portion 51b, and the case side surface portion 51c on three of the four sides, but the remaining one side is opened without being fixed. Yes. Here, as an example, the upper end in FIG. 13 (and FIG. 10) is the open end 55a. A package display card member (not shown) on which a jacket photo or the like is printed can be inserted into the transparent sheet 55 from the open end 55a.

  The optical disc case 50 having the basic configuration as described above is most commonly distributed as a storage case mainly for DVD, and is called a “toll case” or the like. In the present embodiment, a booster antenna unit 20d in which the booster antenna 20 is formed is mounted on such an existing optical disc case 50.

  The basic configuration of the booster antenna unit 20d is the same as that of each of the embodiments described above, and the antenna coils 21 and 22 and the connection wiring 24 are formed on the flexible substrate 25. The booster antenna unit 20d is fixed to the inner surface of the back cover portion 51b in a state where the disc holding portion 53b is passed through the central hole 26 provided in the central region of the antenna coil 21. At this time, the antenna coil 22 is disposed so as to come into contact with the inner surface of the case side surface 51c in a state where the optical disk case 50 is closed. Note that the adhesive and the bonding procedure described in the embodiment 1-1 may be applied to the booster antenna unit 20d.

  Here, in the booster antenna unit 20d, for example, the entire back surface of the flexible substrate 25 is fixed to the inner surface of the optical disc case 50 in a flat state. When the optical disc case 50 is closed, the bent portion 27a at the boundary between the formation region of the antenna coil 22 and the formation region of the connection wiring 24 is also bent in conjunction with the bending portions 52a and 52b being bent. As a result, when the reader / writer 10 is held over the outer side surface 51c of the case, the antenna coil 11 and the antenna coil 22 of the reader / writer 10 are electromagnetically coupled.

  Further, the booster antenna unit 20d may be fixed to the inner surface of the back cover portion 51b after being bent in advance by 90 degrees with the bent portion 27a as a boundary. In this case, on the back surface of the flexible substrate 25, only the formation region of the antenna coil 21 and the connection wiring 24 may be fixed to the back surface cover portion 51b.

  When the booster antenna unit 20d is fixed to the back cover portion 51b, the flexible substrate 25 is appropriately adjusted according to the unevenness of the back cover portion 51b so that the back surface of the flexible substrate 25 is in close contact with the inner surface of the back cover portion 51b. Bend. This bending process may be performed before attachment to the back surface cover portion 51b, or may be performed by pressing when attaching to the back surface cover portion 51b. Further, the inner surface of the back cover portion 51b may be formed flat in the region where the flexible substrate 25 is fixed so that the flexible substrate 25 (particularly the region where the connection wiring 24 is formed) can be fixed in a flat state. .

  In Embodiment 3-1, which has been described above, the structure and shape of an existing tall case type optical disc case are not changed (or only a slight processing or shape change is performed with respect to the original shape) in a simple process. A booster antenna can be installed. As a result, communication between the reader / writer 10 and the IC chip 5 of the optical disk 1 can be achieved by bringing the antenna coil 11 of the reader / writer 10 close to the case side surface 51c in a state of facing the surface. Become.

[Embodiment 3-2]
FIG. 14 is a diagram showing a configuration of an optical disc case according to Embodiment 3-2.
An optical disk case 50a shown in FIG. 14 is a modification of the optical disk case 50 of the embodiment 3-1, and the booster antenna unit 20e is arranged not on the inner surface of the back cover portion 51b and the case side surface portion 51c but on the outer surface thereof. It was established. FIG. 14 is a rear view of the optical disc case 50a, and parts corresponding to those in FIG. 13 are denoted by the same reference numerals.

  The booster antenna unit 20e is disposed such that the center of the antenna coil 21 and the center of the disk holding portion 53b are aligned, and the antenna coil 22 is positioned on the outer surface of the case side surface portion 51c. It is fixed to 51b and the case side surface 51c. When the optical disk case 50a is closed, the boundary between the formation area of the antenna coil 22 and the formation area of the connection wiring 24 is folded in conjunction with the bending of the boundary between the back cover 51b and the case side 51c. The part 27a is also bent. As a result, when the reader / writer 10 is held outside the case side surface 51c, the antenna coil 11 and the antenna coil 22 of the reader / writer 10 are electromagnetically coupled.

  When the outer surfaces of the front cover 51a, the back cover 51b, and the case side 51c are covered with a transparent sheet, the booster antenna unit 20e is disposed inside the transparent sheet.

[Embodiment 3-3]
15 and 16 are diagrams showing the configuration of the optical disc case according to Embodiment 3-3. 15 shows a rear view, and FIG. 16 shows a cross-sectional view taken along the line CC in FIG. 15. In these figures, the portions corresponding to FIGS. 13 and 11 are given the same reference numerals. .

  The basic configuration of the optical disc case 50b shown in FIG. 15 is the same as that of the above-described Embodiment 3-1, and the front cover portion 51a and the rear cover portion 51b are connected so as to be bendable via the case side surface portion 51c. It has a structure.

  In this optical disc case 50b, the outer surfaces of the front cover 51a, the back cover 51b, and the case side 51c are covered with a transparent sheet 55, and a card member for package display is provided between the transparent sheet 55 and the case main body. 56 is inserted. In this example, the upper side in FIG. 15 is the open end 55a of the transparent sheet 55, and the card member 56 can be inserted from the open end 55a. A booster antenna unit 20 f is mounted on the card member 56. The booster antenna unit 20f is basically fixed to the case body side of the card member 56 so as not to affect the package display surface of the card member 56.

FIG. 17 is a diagram illustrating a configuration of a card member on which a booster antenna unit is mounted.
FIG. 17A shows the card member 56 as viewed from the back side of the package display surface. As shown in this figure, the areas 56a to 56c of the card member 56 are areas that are brought into contact with the front cover 51a, the back cover 51b, and the case side 51c when the case is inserted. ), When the optical disc case 50b is closed, the boundaries of the regions 56a to 56c are bent.

  Of these, the booster antenna unit 20f is fixed to the regions 56b and 56c. In the booster antenna unit 20f, the boundary between the formation region of the antenna coil 22 and the formation region of the connection wiring 24 is a bent portion 27a, and the bent portion 27a can be bent in conjunction with the bending of the card member 56. .

  When such a card member 56 is inserted between the transparent sheet 55 and the case body, the booster antenna unit 20f is disposed so that the center of the antenna coil 21 is aligned with the center of the disk holding portion 53b, and the optical disk case 50b. When the optical disk 1 is accommodated, the antenna coil 6 on the optical disk 1 side and the antenna coil 21 of the booster antenna unit 20f are electromagnetically coupled. Further, the antenna coil 22 is disposed so as to be positioned on the outer surface of the case side surface portion 51c, so that when the reader / writer 10 is held outside the case side surface portion 51c, the antenna coil 11 of the reader / writer 10 and the antenna are arranged. The coil 22 is electromagnetically coupled to enable communication between the reader / writer 10 and the IC chip 5.

  When manufacturing the optical disc case 50b of the present embodiment, basically, after the case main body including the front cover portion 51a, the back cover portion 51b, and the case side surface portion 51c is integrally formed by injection molding, A transparent sheet 55 is attached to the outer surface of the case body. The transparent sheet 55 is a card in which the end corresponding to the three sides is connected (for example, bonded) to the end of the case body, and the booster antenna unit 20f is fixed in advance from the open end corresponding to the other side. Member 56 is inserted.

  Therefore, according to the present embodiment, the card member 56 on which the booster antenna unit 20f is mounted is simply inserted into the optical disc case without performing any processing on the existing tall case type optical disc case. Thus, communication with the IC chip 5 can be performed from the case side surface 51c. Further, the card member 56 on which the booster antenna unit 20f is mounted can be distributed separately from the optical disc case main body.

  In the present embodiment, the booster antenna unit 20f in which the metal wiring or the like constituting the booster antenna is formed on the flexible substrate 25 is fixed to the card member 56. However, the metal wiring is not used without using the flexible substrate 25. May be formed directly on the card member 56 by printing or the like.

  In addition, as an example of an optical disc case having the same basic configuration as the above-mentioned tall case type, a detachable portion for detaching a memory card including a flash memory is provided on the inner surface of the case adjacent to the mounting surface of the optical disc 1. There is also an optical disc case. Also for such an optical disk case, a booster antenna can be mounted by the method shown in the above-described Embodiments 3-1 to 3-3.

  By the way, when a large number of optical disk cases in the above embodiments are stored in parallel in a storage shelf or the like, the booster antennas provided in the adjacent optical disk cases are arranged very close to each other. At this time, especially when the antenna coils responsible for communication with the IC chip in each booster antenna are arranged close to each other in a state where the antenna coil surfaces are parallel, when communicating with the IC chip through one antenna In addition, communication interference may occur between antennas. Therefore, for example, when a similar optical disc case is adjacent to both sides from a state in which good communication is performed with a single optical disc case, a phenomenon that communication becomes unstable or a case where communication cannot be performed occurs. In addition, when a reader / writer is brought close to the side surface of a certain optical disk case from among the parallel optical disk cases, a phenomenon occurs in which stored information in the target optical disk case is read.

  These phenomena are caused by the fact that the reader / writer tries to communicate with a plurality of IC chips in a plurality of optical disk cases, so that power supply to each IC chip is insufficient, or a collision state occurs. Therefore, it is considered that the normal communication with the desired IC chip cannot be performed. In addition, when an IC chip corresponding to another adjacent antenna coil has higher communication capability, communication with the IC chip is performed, and communication with the desired IC chip cannot be performed. It is thought that this also contributes to the above phenomenon.

  Therefore, in the following Embodiments 4-1 to 4-8, a sheet-like high magnetic permeability member is provided on the outer side of the IC chip side antenna coil in the booster antenna with respect to the optical disk case having the structure described above. Thus, communication interference between adjacent optical disc cases is prevented and communication performance is improved.

[Embodiment 4-1]
FIG. 18 is an exploded perspective view of the optical disc case according to Embodiment 4-1. FIG. 19 is an exploded perspective view showing the mounting structure of the booster antenna unit and the high magnetic permeability member to the disc tray. In FIGS. 18 and 19, the parts corresponding to FIGS. 5 and 6 are denoted by the same reference numerals.

  The optical disk case 30b shown in FIG. 18 has a high magnetic permeability member between the antenna coil 21 on the IC chip 5 side of the booster antenna unit 20a and the disk tray 33 with respect to the optical disk case 30 of the embodiment 1-1. 311 is provided. The high magnetic permeability member 311 is formed as an annular sheet material wider than the area where the antenna coil 21 is formed, and is disposed around the disk holding portion 36 with the antenna coil 21 being centered with each other.

  Even when the optical disk cases 30b having the same structure are stored side by side in the same direction on the storage shelf, for example, the antenna coils 21 of the booster antenna unit 20a in the adjacent optical disk case 30b via the base portion 31 are provided by the high magnetic permeability member 311. Can be separated electrically and electromagnetically. Therefore, by bringing the reader / writer 10 close to the outside of the side surface 38 of the desired optical disc case 30b, it becomes possible to more reliably communicate with the IC chip in the case.

  As shown in FIG. 19, the booster antenna unit 20 a and the high magnetic permeability member 311 are attached to the base portion 31 after being attached to the disc tray 33 in advance, for example. At the time of attachment to the disk tray 33, for example, the high permeability member 311 is fixed to the lower surface side of the antenna coil 21 with an adhesive or the like, and then fixed to the lower surface of the high permeability member 311 and the disk tray 33 with an adhesive or the like. . Alternatively, after the high magnetic permeability member 311 is fixed to the disk tray 33, the booster antenna unit 20a may be fixed from above. As described above, the disc tray 33 in which the booster antenna unit 20 a and the high magnetic permeability member 311 are mounted in advance may be distributed separately from the base portion 31 and the cover portion 32.

  Note that the booster antenna unit 20a and the high magnetic permeability member 311 may be attached later to an existing optical disc case including the base portion 31, the cover portion 32, and the disc tray 33. Further, the booster antenna unit 20 a may be fixed to the disk holding surface of the disk tray 33, and the high magnetic permeability member 311 may be fixed to the back surface of the disk tray 33. Alternatively, only the high magnetic permeability member 311 may be fixed to the inner surface or the outer surface of the base portion 31.

  The high permeability member 311 may be manufactured by, for example, a method of sintering a magnetic powder using a soft magnetic material as a magnetic powder, or a method of forming the magnetic powder by mixing it with a binder. Good. Examples of soft magnetic materials include Sendust (Fe-Al-Si series), Permalloy (Ni-Fe series), amorphous alloys (Fe-Si-B series, Co-Fe-Si-B series, etc.), ferrite (Ni -Zn ferrite, Mn-Zn ferrite, etc.) can be used.

  As a method for sintering magnetic powder (a method for forming a sintered body), for example, a metal paste formed by dispersing fine powder of ferrite material in an organic solvent is applied in a sheet form, and then the organic solvent is heated. A method of decomposing and obtaining a fired sintered ferrite plate can be used. Moreover, as a method of molding by mixing the magnetic powder into the binder, for example, a synthetic resin material such as nylon 12, PPS (polyphenylene sulfide), polyethylene, etc. is used as the binder, and after mixing the magnetic powder into the binder, for example, A method of forming a sheet or plate by injection molding or the like can be used.

  In addition, sheet materials using the same magnetic material are widely distributed as, for example, RFID magnetic sheets, electromagnetic noise suppression sheets, and the like, and the high permeability member 311 is used by using such ready-made sheet materials. Can also be formed.

[Embodiment 4-2]
FIG. 20 is an exploded perspective view of the optical disc case according to Embodiment 4-2. In FIG. 20, parts corresponding to those in FIG. 8 are denoted by the same reference numerals.

  An optical disc case 30c shown in FIG. 20 is obtained by disposing a high permeability member 312 between the booster antenna unit 20b and the base portion 31 with respect to the optical disc case 30a of the embodiment 1-2. The high magnetic permeability member 312 is formed as a circular sheet material wider than the area where the antenna coil 21 is formed, and is arranged in a state where the antenna coil 21 and the center are aligned with each other.

  Here, the high-permeability member 312 is formed in a circular shape. However, if this member covers at least the region where the antenna coil 21 is formed, another shape such as an annular shape is formed. Also good.

  Even when the optical disk cases 30c having the same structure are stored side by side in the same direction on the storage shelf by the high magnetic permeability member 312, for example, the antenna coils 21 of the booster antenna unit 20b in the adjacent optical disk case 30c through the base portion 31 Can be separated electrically and electromagnetically. Therefore, by bringing the reader / writer 10 close to the outside of the side surface 38 of the desired optical disc case 30c, it becomes possible to communicate more reliably with the IC chip in the case.

  When manufacturing the optical disc case 30c, for example, after attaching the high magnetic permeability member 312 to the lower surface (surface on the base portion 31 side) of the antenna coil 21 of the booster antenna unit 20b, these are attached to the rear surface of the disc tray 33. Stick. Then, the disc tray 33 on which the booster antenna unit 20 b and the high magnetic permeability member 312 are mounted is fitted on the inner surface of the base portion 31. In this case, the disc tray 33 on which the booster antenna unit 20b and the high permeability member 312 are mounted in advance can be distributed separately from the base portion 31 and the cover portion 32.

  Further, after the booster antenna unit 20b is fixed to the back surface of the disk tray 33, the high permeability member 312 may be fixed to the disk tray 33 side with the antenna coil 21 interposed therebetween. Further, a part in which the booster antenna unit 20 b and the high magnetic permeability member 312 are integrated may be fixed to the inner surface of the base portion 31 instead of the disc tray 33. Alternatively, the high magnetic permeability member 312 may be fixed to the base portion 31 and the booster antenna unit 20 b may be fixed to the disk tray 33. In this case, the high magnetic permeability member 312 may be fixed to the outer surface of the base portion 31.

[Embodiment 4-3]
FIG. 21 is an exploded perspective view of the optical disc case according to Embodiment 4-3. In FIG. 21, the parts corresponding to those in FIGS. 8 and 20 are denoted by the same reference numerals.

  In the optical disk case 30d shown in FIG. 21, the high magnetic permeability member 312 shown in the embodiment 4-2 is disposed in a state of being fixed to a card member 321 made of paper or the like. In this example, the booster antenna unit 20 b is also fixed to the card member 321 through the high magnetic permeability member 312. Such a card member 321 is disposed on the inner surface of the base portion 31, and the disc tray 33 is fitted on the inner surface of the base portion 31 with the card member 321 sandwiched therebetween. In such a configuration, the card member 321 in which the booster antenna unit 20b and the high magnetic permeability member 312 are mounted in advance is distributed separately from the case main body including the base portion 31, the cover portion 32, and the disc tray 33. You can also

  Note that only the high magnetic permeability member 312 may be fixed to the card member 321 and the booster antenna unit 20 b may be fixed to the disk tray 33. In this case, the booster antenna unit 20 b having the shape shown in FIG. 5 may be arranged on the front side of the disk tray 33.

  Moreover, in this Embodiment 4-3, in addition to the base part 31 side of the booster antenna unit 20b, the high magnetic permeability member 313 is also provided on the cover part 32 side. The high magnetic permeability member 313 is formed as a circular sheet material wider than the area where the antenna coil 21 is formed, and is disposed at a position where the center of the antenna coil 21 and the antenna coil 21 are aligned with each other when the base portion 31 and the cover portion 32 are closed.

  By arranging the high magnetic permeability member 313, even when the optical disk cases 30d having the same structure are stored side by side in different directions, for example, an optical disk case mounted with a booster antenna without the high magnetic permeability member is provided. Even in the case where they are arranged in parallel, the antenna coils 21 of the booster antenna unit 20b are electrically connected not only between the adjacent optical disc cases via the base portion 31 but also between the adjacent optical disc cases via the cover portion 32. Can be separated electromagnetically. Therefore, communication with the IC chip in the desired optical disk case can be performed more reliably with the optical disk cases arranged in parallel.

  By the way, the high magnetic permeability member 313 may be fixed to, for example, the inner surface or the outer surface of the cover portion 32. Here, as an example, the high magnetic permeability member 313 is fixed to a card member 322 made of paper or the like. The cover portion 32 is disposed on the inner surface. The inner surface of the cover part 32 serves as a booklet storage surface for storing a booklet for explaining contents recorded on the optical disc 1, for example, and holding members 331a and 331b for holding the booklet are provided on this surface. Is formed integrally with the cover portion 32. The card member 322 to which the high magnetic permeability member 313 is fixed in advance is inserted between the cover portion 32 and the holding members 331a and 331b in the direction of the arrow D in the drawing, and is locked at a predetermined position. With such a configuration, the card member 322 on which the high magnetic permeability member 313 is mounted in advance can be distributed separately from the case main body including the base portion 31, the cover portion 32, and the disc tray 33.

  The high magnetic permeability members 312 and 313 may be fixed to either side of the card members 321 and 322, respectively. However, by fixing the high magnetic permeability members 312 and 313 to the case inner surface side of the card members 321 and 322, the contents recorded on the optical disc 1 are described on the case outer surface side of the card members 321 and 322, for example. You can display text and jacket photos.

[Embodiment 4-4]
FIG. 22 is a perspective view showing a configuration of an optical disc case according to Embodiment 4-4. In FIG. 22, the same reference numerals are given to the portions corresponding to FIG. 9.

  The optical disc case 40a shown in FIG. 22 is obtained by disposing high permeability members 47a and 47b on the base portion 41 and the cover portion 42, respectively, with respect to the optical disc case 40 of the second embodiment. The high magnetic permeability member 47a is formed as an annular sheet material wider than the area where the antenna coil 21 is formed, and between the antenna coil 21 and the base portion 41, the disk holding portion 45 is in a state in which the antenna coil 21 is centered with each other. It is arrange | positioned around.

  On the other hand, the high magnetic permeability member 47b is formed as a circular sheet material wider than the area where the antenna coil 21 is formed, and is disposed at a position where the antenna coil 21 and the center are aligned with each other when the base portion 31 and the cover portion 32 are closed. The Here, the high magnetic permeability member 47b is formed in a circular shape. However, if this member covers at least the region where the antenna coil 21 is formed, it may have another shape such as an annular shape. Also good.

  With such a configuration, even when an optical disk case having a booster antenna unit having the same structure is stored in parallel in a storage shelf, for example, the antenna coil 21 in the optical disk case 40a is connected to the antenna in the adjacent optical disk case. The coil 21 can be separated electrically and electromagnetically. Therefore, communication with the IC chip in the desired optical disk case can be performed more reliably with the optical disk cases arranged in parallel.

  When manufacturing the optical disc case 40a, for example, the high magnetic permeability member 47a is fixed in advance to the lower surface (surface on the base portion 41 side) of the booster antenna unit 20c, and these are fixed to the inner surface of the base portion 41. . In this case, a part in which the booster antenna unit 20c and the high magnetic permeability member 47a are integrated can be distributed separately from the case body. Further, after the high magnetic permeability member 47a is fixed to the inner surface of the base portion 41, the booster antenna unit 20c may be fixed from above. Further, the high magnetic permeability member 47 a may be fixed to the outer surface of the base portion 41.

  On the other hand, the high magnetic permeability member 47 b is fixed to the inner surface or the outer surface of the cover portion 42. Further, the high magnetic permeability member 47b can be disposed on the inner surface of the cover portion 42 in a state of being fixed to the card member 322 shown in FIG. 21 instead of being fixed to the cover portion 42. In this case, the card member 322 with the high magnetic permeability member 47b fixed thereto can be distributed separately from the case main body.

[Embodiment 4-5]
FIG. 23 is a front view showing the configuration of the optical disc case according to Embodiment 4-5. In FIG. 23, parts corresponding to those in FIG. 10 are denoted by the same reference numerals.

  In the optical disk case 50c shown in FIG. 23, a high permeability member 511 is disposed between the antenna coil 21 of the booster antenna unit 20d and the back cover part 51b with respect to the optical disk case 50 of the embodiment 3-1. Is. The high magnetic permeability member 511 is formed as an annular sheet material wider than the area where the antenna coil 21 is formed, and between the antenna coil 21 and the back cover portion 51b, the disk holding portion is in a state in which the antenna coil 21 and the center are aligned with each other. It is arranged around 53b.

  Even when the optical disk cases 50c having the same structure are stored side by side in the same direction on the storage shelf by the high magnetic permeability member 511, for example, the antenna coil 21 of the booster antenna unit 20d in the adjacent optical disk case 50c via the back cover 51b. They can be separated electrically and electromagnetically. Therefore, by bringing the reader / writer 10 close to the outside of the case side surface 51c of the desired optical disc case 50c, communication with the IC chip in the case can be performed more reliably.

  When manufacturing the optical disc case 50c, for example, the high magnetic permeability member 511 is fixed to the lower surface (the surface on the back cover portion 51b side) of the booster antenna unit 20d in advance, and these are fixed to the inner surface of the back cover portion 51b. . In this case, a component in which the booster antenna unit 20d and the high magnetic permeability member 511 are integrated can be distributed separately from the case body. Further, after the high magnetic permeability member 511 is fixed to the inner surface of the back cover portion 51b, the booster antenna unit 20d may be fixed from above. Further, the high magnetic permeability member 511 may be fixed to the outer surface of the back cover portion 51b.

[Embodiment 4-6]
FIG. 24 is a rear view showing the configuration of the optical disc case according to Embodiment 4-6. In FIG. 24, parts corresponding to those in FIG. 14 are denoted by the same reference numerals.

  The optical disk case 50d shown in FIG. 24 is obtained by disposing a high permeability member 512 further on the outer surface side of the booster antenna 20 of the booster antenna unit 20e with respect to the optical disk case 50a of the embodiment 3-2. The high magnetic permeability member 512 is formed as a circular sheet material wider than the area where the antenna coil 21 is formed, and is fixed to the outer surface side of the antenna coil 21 in a state where the center is aligned with the antenna coil 21.

  Even when the optical disk cases 50d having the same structure are stored side by side in the same direction on the storage shelf by the high magnetic permeability member 512, for example, the antenna coil 21 of the booster antenna unit 20e in the adjacent optical disk case 50d via the back cover 51b. They can be separated electrically and electromagnetically. Therefore, by bringing the reader / writer 10 close to the outside of the case side surface 51c of the desired optical disc case 50d, it becomes possible to more reliably communicate with the IC chip in the case.

  When manufacturing the optical disk case 50d, for example, the high magnetic permeability member 512 is fixed to the outer surface side of the booster antenna unit 20e in advance, and these are fixed to the outer surface of the back cover portion 51b. In this case, a part in which the booster antenna unit 20e and the high permeability member 512 are integrated can be distributed separately from the case body. Further, after the booster antenna unit 20e is fixed to the outer surface of the back cover portion 51b, the high magnetic permeability member 512 may be fixed from above.

  Although not shown here, in any of the above embodiments 4-5 and 4-6, a sheet-like high magnetic permeability member is also provided on the front cover 51a, and these optical disc cases 50c. And the antenna coil 21 in 50d and the antenna coil 21 of the optical disk case adjacent via the surface cover part 51a may be electrically and electromagnetically separated. In this case, the high magnetic permeability member is molded into a shape such as a circle wider than the area where the antenna coil 21 is formed, and the antenna coil 21 is centered with each other when the front cover portion 51a and the rear cover portion 51b are closed. It is fixed to the inner surface or the outer surface of the front cover 51a.

[Embodiment 4-7]
FIG. 25 is a rear view showing the configuration of the optical disc case according to Embodiment 4-7. FIG. 26 is a diagram showing a configuration of a card member on which a booster antenna unit is mounted in the embodiment 4-7. 25 and 26, parts corresponding to those in FIGS. 15 and 17 are denoted by the same reference numerals.

  An optical disk case 50e shown in FIG. 25 is obtained by disposing a high permeability member 513 between the booster antenna unit 20f and the card member 56 with respect to the optical disk case 50b of the embodiment 3-3. The high magnetic permeability member 513 is formed as a circular sheet material wider than the formation area of the antenna coil 21 (see FIG. 26), and the card member 56 is interposed between the front cover portion 51a and the rear cover portion 51b and the transparent sheet 55. When inserted, the antenna coil 21 and the antenna coil 21 are arranged so that their centers are aligned with each other. Here, the high-permeability member 513 is formed in a circular shape. However, as long as this member covers at least the formation region of the antenna coil 21, other shapes such as an annular shape can be used. May be.

  Even when the optical disk case 50e is stored side by side on a storage shelf, the booster antenna (especially the antenna coil on the IC chip side) in the adjacent optical disk case 50e is electrically and electromagnetically separated by the high magnetic permeability member 513. Thus, the reader / writer 10 can be used to reliably communicate with a desired IC chip.

  The high magnetic permeability member 513 is fixed to the card member 56 after being fixed in advance to the booster antenna unit 20f with an adhesive or the like, for example. Alternatively, after the high magnetic permeability member 513 is fixed to the card member 56, the booster antenna unit 20f may be fixed thereon. Then, the card member 56 (see FIG. 26) to which the booster antenna unit 20f and the high magnetic permeability member 513 are fixed is inserted between the case main body of the optical disc case 50e and the transparent sheet 55.

  Accordingly, the card member 56, to which the booster antenna unit 20f and the high magnetic permeability member 513 are attached in advance, is distributed as a separate product from the case main body, thereby increasing the height of the IC chip relative to the existing tall case type optical disc case. It becomes possible to easily add a high-performance communication function.

  The high magnetic permeability member 513 may be fixed not to the case inner surface side of the card member 56 but to the case outer surface side. Further, the booster antenna unit 20f may be disposed on the outer surface side of the case, and the high magnetic permeability member 513 may be further disposed on the outer surface side thereof.

[Embodiment 4-8]
FIG. 27 is a diagram showing a configuration of a card member mounted on the optical disc case according to Embodiment 4-8.

  In the card member 56 shown in FIG. 27, in addition to the configuration of the embodiment 4-7, a high magnetic permeability member 514 is also provided in a region 56a of the card member 56 that contacts the surface cover portion 51a. The high magnetic permeability member 514 is formed as a circular sheet material wider than the formation area of the antenna coil 21 of the booster antenna unit 20f, and the card member 56 is interposed between the front cover portion 51a and the rear cover portion 51b and the transparent sheet 55. When inserted, the antenna coil 21 and the antenna coil 21 are arranged so that their centers are aligned with each other.

  Here, the high-permeability member 514 is formed in a circular shape. However, as long as this member covers at least the formation region of the antenna coil 21, other shapes such as an annular shape are used. May be. Further, although the high magnetic permeability member 514 is fixed to the inner surface of the case of the card member 56 here, the high magnetic permeability member 514 may be fixed to the outer surface of the case.

  Thus, by arranging the high magnetic permeability member 514 in addition to the high magnetic permeability member 513, even when the optical disk case provided with the booster antenna unit of the same structure is stored in parallel in the storage shelf, for example, The antenna coil 21 in the optical disk case 50e can be electrically and electromagnetically separated from the antenna coil 21 in the adjacent optical disk case. Therefore, communication with the IC chip in the desired optical disk case can be performed more reliably with the optical disk cases arranged in parallel.

  In the above embodiments 4-1 to 4-8, each of the high magnetic permeability members 311 to 313, 47a, and 511 to 514 is equal to or larger than the size of the area where the antenna coil 21 is formed. Is desirable. However, when there is a restriction derived from the case shape, a restriction derived from cost, or the like, the high magnetic permeability members 311 to 313, 47a, and 511 to 514 may be narrower than the formation region of the antenna coil 21. However, when the case is closed, it is desirable that each of the high magnetic permeability members 311 to 313, 47a, 511 to 514 and the area where the antenna coil 21 is formed be arranged so that the centers thereof are aligned with each other.

  That is, by providing the above-described high permeability member, when communicating with an IC chip through a certain antenna coil, the electromagnetic field cannot be completely shielded against the side of the antenna coil opposite to the IC chip. However, it is only necessary to obtain an effect of weakening the electromagnetic field to some extent with respect to the IC chip in the adjacent optical disc case that is not a communication target. Accordingly, the size of the high magnetic permeability member is such that an effect of weakening the leakage of the electromagnetic field to the adjacent optical disc case is obtained, and communication with the IC chip in the optical disc case is substantially impossible. It only has to be.

  In Embodiments 4-1 to 4-8, there is a distance corresponding to the thickness of the case body between the base portion and the cover portion or between the front cover portion and the back cover portion. To do. For this reason, when the optical disk case having such a configuration is arranged in parallel on a storage shelf or the like, a distance of, for example, about 2 mm to 10 mm is generated between the IC chip side antenna coils in adjacent cases. As the distance increases, the electrical and electromagnetic influences on the IC chip antenna coils are reduced.

  Therefore, in this case, it is not necessary to provide the high permeability member with a thickness sufficient to completely shield the electromagnetic field from the IC chip side antenna coil to the outside of the case, and the high permeability member can be made thinner. Thus, it is possible to prevent a situation in which communication is performed unintentionally with an antenna coil in an adjacent optical disc case or communication becomes impossible due to collision. In other words, the high magnetic permeability members 311 to 313, 47a, and 511 to 514 have the effect of weakening the leakage of the electromagnetic field, and can substantially communicate with the IC chip in the adjacent optical disc case that is not a communication target. It is possible to use a thinner one if it has a thickness that is impossible.

  For example, when the communication frequency of the IC chip is 13.56 MHz, it is desirable that the thickness of the high magnetic permeability member is approximately 100 μm or less from the viewpoint of disposing the thickness of the existing optical disc case without changing it. . However, in the optical disk case having the above structure, even when the thickness of the high magnetic permeability member is 50 μm or less, a sufficient shielding effect can be obtained between the IC chip side antenna coils in the adjacent cases. Moreover, material cost can also be suppressed by making a high-permeability member thin.

  Hereinafter, a supplementary explanation will be given on the shielding effect of the electromagnetic field by the high permeability member. First, FIG. 28 is a diagram for explaining the shielding effect of the electromagnetic field in the optical disc case when the high permeability member is not provided. 28, parts corresponding to those in FIG. 8 are denoted by the same reference numerals, and description thereof is omitted.

  The optical disk case 130a shown in FIG. 28 has substantially the same configuration as the optical disk case 30a of the embodiment 1-2 shown in FIG. 8, and the booster antenna unit 20b is the back surface of the disk placement surface 35 of the disk tray 33. It is arranged. FIG. 28 shows a cross-sectional view of the optical disc case 130 a in a state where the optical disc 1 is mounted on the disc tray 33.

  In FIG. 28, an optical disk case 130b having the same configuration as that of the optical disk case 130a is arranged in the same direction and is stacked on the lower side. That is, they are arranged in parallel so that the base portion 31 of the optical disc case 130a and the cover portion 32 of the optical disc case 130b are brought into contact with each other.

  With the optical disc case 130a and the optical disc case 130b arranged in parallel as described above, the reader / writer 10 is brought close to the optical disc case 130a, and the antenna coil 11 of the reader / writer 10 is connected to the antenna coil in the optical disc case 130a. When facing 22, an electromagnetic field generated during communication can be schematically represented as an arrow E in the figure. In response to the electromagnetic field generated between the antenna coil 11 of the reader / writer 10 and the antenna coil 22 in the optical disk case 130a, the other antenna coil 21 that constitutes the booster antenna 20b together with the antenna coil 22. An electromagnetic field is also generated at, and this electromagnetic field can be schematically represented as an arrow F1 in the figure.

  At the time of such communication, as shown in FIG. 28, when a high permeability member is not disposed outside the antenna coil 21 in the optical disc case 130a, the electromagnetic field (corresponding to the arrow F1) generated in the antenna coil 21 is In addition to acting on the antenna coil 6a and IC chip (not shown) of the optical disk 1 in the case to be operated, it is possible to act on the antenna coil 6a and IC chip (not shown) of the optical disk 1 in the adjacent optical disk case 130b. There is sex. When both IC chips on the optical disc 1 act together, as described above, the phenomenon that the communication becomes unstable, the phenomenon that the communication cannot be performed, the stored information in the case adjacent to the target is read. May occur.

  FIG. 29 is a diagram for explaining the shielding effect of an electromagnetic field when a high permeability member having a high shielding effect is provided. 29, parts corresponding to those in FIG. 28 are denoted by the same reference numerals, and description thereof is omitted.

  The optical disk cases 130c and 130d shown in FIG. 29 have substantially the same configuration as the optical disk case 30c of the embodiment 4-2 shown in FIG. That is, in each of the optical disk cases 130a and 130b shown in FIG. 28, a sheet-like high permeability member 312a is disposed between the antenna coil 21 on the IC chip side of the booster antenna unit 20b and the base portion 31. Is.

  In FIG. 29, it is assumed that a high magnetic permeability member 321a having a high electromagnetic field shielding effect with respect to another adjacent optical disk case is provided. Then, in a state where the optical disk case 130c and the optical disk case 130d provided with such a high magnetic permeability member 321a are juxtaposed, the reader / writer 10 is brought close to the optical disk case 130c, and the antenna coil of the reader / writer 10 is placed. 11 is made to oppose the antenna coil 22 in the optical disk case 130c, and communication is performed. At this time, an electromagnetic field is also generated in the other antenna coil 21 connected thereto corresponding to the electromagnetic field generated in the antenna coil 22 in the optical disc case 130c, and this electromagnetic field is schematically shown by an arrow F2 in the figure. Can be expressed as

  In this case, the electromagnetic field (corresponding to the arrow F2) generated in the antenna coil 21 is caused by the shielding effect of the high permeability member 312a adjacent to the antenna coil 6a and the IC coil (not shown) of the optical disk 1 in the optical disk case 130c. It does not act on the antenna coil 6a and the IC chip (not shown) of the optical disc 1 in the adjacent optical disc case 130d. Therefore, as described above, it is possible to prevent a situation in which communication is performed unintentionally with the antenna coil 6a in the adjacent optical disc case 130d or communication is disabled due to the occurrence of a collision.

  On the other hand, FIG. 30 is a diagram for explaining the shielding effect of an electromagnetic field when a high permeability member having a low shielding effect is provided. In FIG. 30, parts corresponding to those in FIG. 29 are denoted by the same reference numerals, and description thereof is omitted.

  Optical disk cases 130e and 130f shown in FIG. 30 both have the same basic configuration as that shown in FIG. 29, but the shielding effect of high permeability member 321b is lower than that of high permeability member 321a of FIG. The point is different. For example, the case where the high magnetic permeability member 321b is formed thinner or with a smaller area is assumed.

  When communication is attempted with the reader / writer placed close to the antenna coil 22 of the optical disk case 130e in a state where the optical disk case 130e and the optical disk case 130f are overlapped, the electromagnetic field generated by the antenna coil 22 is handled. Thus, an electromagnetic field is also generated in the other antenna coil 21 connected thereto, and this electromagnetic field can be schematically represented as an arrow F3 in the figure.

  At this time, the electromagnetic field (corresponding to the arrow F3) generated in the antenna coil 21 is caused by the shielding effect of the high permeability member 312b adjacent to the antenna coil 6a and the IC coil (not shown) of the optical disk 1 in the optical disk case 130a. In addition, the electromagnetic field leaks to the antenna coil 6a and the IC chip (not shown) side of the optical disk 1 in the adjacent optical disk case 130f.

  However, if the electromagnetic field strength ratio is large between the positions of both optical discs 1 and the electromagnetic field leaking to the optical disc case 130f side is at a level at which the IC chip in this level does not operate, as described above, It is possible to prevent a situation in which the antenna coil 6a in the adjacent optical disc case 130f is unintentionally communicated or communication becomes impossible due to collision.

  Further, even if the IC chip in the optical disc case 130f is operated by the leaked electromagnetic field, a large difference is given to the level of the response signal to the reader / writer 10 between the optical disc case 130e and the optical disc case 130f. As a result, communication between the reader / writer 10 and the IC chip in the optical disc case 130f becomes impossible. Accordingly, even in this case, similarly to the above, it is possible to prevent a situation in which communication is performed unintentionally with the antenna coil 6a in the adjacent optical disc case 130f or communication is disabled due to the occurrence of a collision.

  As described above, since the shielding effect of the obtained electromagnetic field can be adjusted by appropriately adjusting the thickness and / or size of the high magnetic permeability member, the adjacent optical disc case that is not a communication target Each of the above design values can be selected as appropriate so that communication with the IC chip cannot be substantially performed.

  According to each embodiment described above, it is possible to mount a booster antenna on the optical disc case in a simple process without greatly changing the structure of various optical disc cases that are already widely used. The reader / writer can be brought close to the side surface (surface perpendicular to the main surface of the case) to communicate with the IC chip on the optical disk.

  For this reason, there is no need to change the mold, manufacturing process, manufacturing equipment, etc. necessary for manufacturing the optical disc case, so that the additional functions as described above can be achieved without significantly increasing the manufacturing cost compared to the conventional case. Can be manufactured.

  Further, as shown in Embodiments 4-1 to 4-8, by further providing a high permeability sheet member on the case outer surface side member, even when the optical disk case is stored in parallel on a storage shelf, It becomes possible to reliably and stably communicate with an IC chip in a desired optical disc case, and such an effect can be easily obtained without greatly changing the structure of an existing optical disc case.

  Further, from the viewpoint of the user, there is an advantage that there is no change in the carrying, opening / closing operation of the optical disc case, and the attaching / detaching operation of the optical disc in spite of the provision of the above-mentioned additional functions. Further, since the shape and size of the optical disc case are not particularly changed, the optical disc case having the additional function can be stored without any problem in the storage shelf in which the optical disc case is already stored, and the storage shelf is replaced with a new one. There is no inconvenience.

  In addition, a storage shelf provided in an optical disc (or content recorded on the optical disc) store, a case for transporting an optical disc case (or an optical disc in a state accommodated in the case) (packaging material such as a cardboard box) Conventional containers can be used as they are. Accordingly, the distribution side can enjoy the advantages of the additional functions such as merchandise management using an IC chip without increasing the cost in the distribution process.

  In each of the above embodiments, each antenna on the non-contact IC chip side and the reader / writer side provided in the booster antenna is formed in a coil shape (spiral shape). However, these antennas are limited to such a shape. It may be selected as appropriate according to the communication specifications of the non-contact type IC chip (communication frequency, intensity of radio waves / electromagnetic waves necessary for communication, radiation pattern of radio waves / electromagnetic waves by antennas, etc.). For example, the antenna on the non-contact type IC chip side of the booster antenna may be disposed in the vicinity of the periphery of the disk holding portion of the optical disk case. When a dipole antenna is used as the antenna, it may be arranged close to the periphery of the disk holding portion, for example, as a bent shape or a curved shape instead of a simple linear shape.

It is a top view which shows the structural example of the optical disk with which a non-contact-type IC chip is mounted. It is a figure for demonstrating the antenna arrangement | positioning by the side of an IC chip and a reader / writer at the time of communicating in non-contact. It is a figure which shows roughly the structure of a circuit required for communication with an IC chip and a reader / writer via a booster antenna. It is a figure which shows the external shape of the optical disk case which concerns on Embodiment 1-1. 1 is an exploded perspective view of an optical disc case according to Embodiment 1-1. It is a figure which shows the structure of a booster antenna unit. It is a disassembled perspective view of the disk tray and booster antenna unit which comprise an optical disk case. It is a disassembled perspective view of the optical disk case based on Embodiment 1-2. 6 is a perspective view showing a configuration of an optical disc case according to Embodiment 2. FIG. It is a figure (front view) which shows the structure of the optical disk case which concerns on Embodiment 3-1. It is a figure (sectional drawing by AA arrow) which shows the structure of the optical disk case which concerns on Embodiment 3-1. It is a figure (sectional drawing by BB arrow) which shows the structure of the optical disk case which concerns on Embodiment 3-1. It is a figure (rear view) which shows the structure of the optical disk case which concerns on Embodiment 3-1. It is a figure which shows the structure of the optical disk case which concerns on Embodiment 3-2. It is a figure (rear view) which shows the structure of the optical disk case which concerns on Embodiment 3-3. It is a figure (sectional drawing by CC arrow) which shows the structure of the optical disk case which concerns on Embodiment 3-3. It is a figure which shows the structure of the card member carrying a booster antenna unit. It is a disassembled perspective view of the optical disk case based on Embodiment 4-1. It is a disassembled perspective view which shows the attachment structure of the booster antenna unit and high magnetic permeability member with respect to the disk tray in Embodiment 4-1. It is a disassembled perspective view of the optical disk case based on Embodiment 4-2. It is a disassembled perspective view of the optical disk case based on Embodiment 4-3. It is a perspective view which shows the structure of the optical disk case which concerns on Embodiment 4-4. It is a front view which shows the structure of the optical disk case which concerns on Embodiment 4-5. It is a rear view which shows the structure of the optical disk case based on Embodiment 4-6. It is a rear view which shows the structure of the optical disk case based on Embodiment 4-7. In Embodiment 4-7, it is a figure which shows the structure of the card member by which the booster antenna unit was mounted. It is a figure which shows the structure of the card member mounted in the optical disk case which concerns on Embodiment 4-8. It is a figure for demonstrating the shielding effect of the electromagnetic field in the optical disk case in case the high magnetic permeability member is not arrange | positioned. It is a figure for demonstrating the shielding effect of an electromagnetic field when the high magnetic permeability member with a high shielding effect is arrange | positioned. It is a figure for demonstrating the shielding effect of an electromagnetic field when the high magnetic permeability member with a low shielding effect is arrange | positioned.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Optical disk, 2, 26 ... Center hole, 3 ... Signal recording area, 4 ... Chucking area, 5 ... IC chip, 6, 11, 21, 22 ... Antenna coil, 7, 13, 23 ...... Tuning circuit, 10 ... Reader / writer, 12 ... Main circuit, 20 ... Booster antenna, 24 ... Connection wiring, 25 ... Flexible substrate, 27a-27c ... Bending part, 30 ... Optical disc case, 31... Base portion 32. Cover portion 33. Disc tray 34. Connecting portion 35. Disc mounting surface 36. Disc holding portion 37. Convex portion 38.

Claims (81)

In an optical disc case in which an optical disc is stored,
The front cover part and the back cover part are connected so as to be rotatable around the end side of each main surface, and are closed so that the main surfaces of the front cover part and the back cover part face each other. Sometimes configured to form a box-shaped outline,
On the inner side of the main surface of the back cover part, a convex holding part is provided for holding the optical disk by fitting in a central hole formed in the optical disk,
Furthermore, the first antenna and the second antenna are connected to each other, and a booster antenna that relays signals transmitted and received by each of them is provided.
The first antenna is disposed such that a center portion thereof coincides with a center of the convex holding portion and an outer shape thereof is parallel to a main surface of the back cover portion, and the second antenna However, the booster antenna is disposed so that the outer shape is in contact with or close to one side surface when the front cover portion and the rear cover portion are closed. An optical disc case. The booster antenna is disposed inside the case when the front cover portion and the back cover portion are closed,
2. The optical disc case according to claim 1, wherein the first antenna is fixed inside the main surface of the back cover portion so as to surround the convex holding portion.   The sheet-like high magnetic permeability member is disposed between the first antenna and a main surface of the back cover portion at a position corresponding to a region where the first antenna is formed. 2. The optical disk case according to 2.   4. The optical disk case according to claim 3, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   3. The optical disk according to claim 2, wherein a sheet-like high permeability member is disposed on a back surface of the first antenna in the back cover portion at a position corresponding to a region where the first antenna is formed. Case.   6. The optical disc case according to claim 5, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   A sheet-like high magnetic permeability member is disposed on any one of the main surfaces of the front cover portion so as to face the first antenna when the front cover portion and the rear cover portion are closed. 3. An optical disk case according to claim 2, wherein   8. The optical disc case according to claim 7, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   The booster antenna is fixed to the outer surface of the case when the front cover portion and the rear cover portion are closed such that the first antenna is disposed outside the main surface of the rear cover portion. The optical disk case according to claim 1.   10. The optical disk case according to claim 9, wherein a sheet-like high magnetic permeability member is disposed on the outer side of the first antenna at a position corresponding to a region where the first antenna is formed.   11. The optical disk case according to claim 10, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   A sheet-like high magnetic permeability member is disposed on any one of the main surfaces of the front cover portion so as to face the first antenna when the front cover portion and the rear cover portion are closed. The optical disk case according to claim 9.   13. The optical disk case according to claim 12, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   2. The booster antenna is arranged such that the second antenna is in contact with or close to a side surface on the rotation center side of the front cover portion and the rear cover portion. Optical disc case.   The optical disk case according to claim 1, wherein the booster antenna is configured as a booster antenna unit in which the first antenna and the second antenna are integrally formed on a flexible substrate.   2. The optical disk case according to claim 1, wherein the first antenna and the second antenna are formed in a spiral shape or a loop shape. One surface is a disk mounting surface on which the optical disk is mounted, and includes a disk tray member provided with the convex holding portion at the center of the disk mounting surface,
The disk tray member is fitted inside the back cover part, and the front cover part configured as a separate member is connected to the back cover part in a rotatable state.
2. The optical disc case according to claim 1, wherein the booster antenna is disposed inside the case when the front cover portion and the rear cover portion are closed.   18. The optical disc case according to claim 17, wherein the booster antenna is disposed in a state where the first antenna is fixed to the disc mounting surface so as to surround the convex holding portion.   19. The optical disk case according to claim 18, wherein a sheet-like high magnetic permeability member is disposed between the first antenna and the disk tray member.   20. The optical disk case according to claim 19, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   19. The optical disk according to claim 18, wherein a sheet-like high magnetic permeability member is disposed on a back surface of the first antenna in the disk tray member at a position corresponding to a region where the first antenna is formed. Case.   The optical disk case according to claim 21, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   18. The optical disc case according to claim 17, wherein the booster antenna is placed between the disc tray member and the back cover portion.   24. The optical disk case according to claim 23, wherein the booster antenna is fixed to a surface opposite to the disk mounting surface of the disk tray member.   24. The optical disk case according to claim 23, wherein a sheet-like high permeability member is disposed between the first antenna and the back cover portion.   26. The optical disk case according to claim 25, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed. A card member for package display is inserted between the disk tray part and the back cover part,
18. The optical disk case according to claim 17, wherein a sheet-like high magnetic permeability member is fixed to any one surface of the card member so as to face the first antenna.   28. The optical disk case according to claim 27, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   28. The booster antenna is fixed to any one surface of the card member so that the high magnetic permeability member is located between the first antenna and the back cover portion. The optical disc case described. A card member for package display is held inside the main surface of the surface cover portion,
A sheet-like high magnetic permeability member is fixed to any one surface of the card member so as to face the first antenna when the front cover portion and the rear cover portion are closed. The optical disk case according to claim 17.   31. The optical disk case according to claim 30, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   The convex holding part is integrally formed inside the main surface of the back cover part, and the front cover part configured as a separate member is connected to the back cover part in a rotatable state. The optical disk case according to claim 1, further comprising: A card member for package display is held inside the main surface of the surface cover portion,
A sheet-like high magnetic permeability member is fixed to any one surface of the card member so as to face the first antenna when the front cover portion and the rear cover portion are closed. An optical disk case according to claim 32.   34. The optical disk case according to claim 33, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   The convex holding part is integrally formed inside the main surface of the back cover part, and the front cover part and the back cover part can be bent at both ends of the side part constituting one side surface when closed. The optical disk case according to claim 1, wherein the front cover part, the back cover part, and the side part are integrally formed. A rectangular transparent film is disposed so as to cover the outer surface of the front cover part, the back cover part, and the side part,
A card member for package display is inserted between the transparent film and the front cover part, the back cover part, and the side part,
The booster antenna is provided on the card member so that the first antenna is disposed on an outer surface of the back cover portion and the second antenna is disposed on an outer surface of the side surface portion. 36. The optical disc case according to claim 35.   The card member, the booster antenna, and the high-permeability member such that a sheet-like high-permeability member is disposed on the outer surface side of the first antenna at a position corresponding to the formation region of the first antenna. 37. The optical disc case according to claim 36, wherein the optical disc case is integrally provided.   38. The optical disk case according to claim 37, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed.   A sheet-like high magnetic permeability member faces the first antenna when the front cover part and the back cover part are closed on either surface of the area of the card member that contacts the front cover part. 37. The optical disk case according to claim 36, wherein the optical disk case is fixed in such a manner.   40. The optical disk case according to claim 39, wherein the high magnetic permeability member is formed wider than a region where the first antenna is formed. The optical disc is provided in a case housing having a function of holding the optical disc, and the front cover portion and the back cover portion are connected to each other so as to be rotatable around the end portions of the main surfaces. In the optical disc tray constituting the optical disc case in which the optical disc is accommodated by being fitted and disposed on the back cover portion with the holding surface facing the inside of the case housing,
A convex holding portion that is provided on one surface and fits into a central hole formed in the optical disc to hold the optical disc;
A booster antenna that is formed in a substantially flat plate shape and connects a first antenna and a second antenna and relays signals transmitted and received by each,
Have
The first antenna is disposed and fixed to the holding surface of the optical disc or the back surface thereof so that the center portion thereof coincides with the center of the convex holding portion, and the second antenna is attached to the optical disc tray. An optical disc tray, wherein the booster antenna is disposed so as to protrude from an end portion.   42. The optical disc tray according to claim 41, wherein the first antenna is fixed to a holding surface of the optical disc so as to surround the convex holding portion.   43. The optical disc tray according to claim 42, wherein a sheet-like high magnetic permeability member is disposed between the first antenna and the optical disc tray.   43. The optical disc tray according to claim 42, wherein a sheet-like high magnetic permeability member is fixed to a back surface of the first antenna in the optical disc tray at a position corresponding to a region where the first antenna is formed.   The booster antenna is disposed on the back surface of the holding surface of the optical disc, and a sheet-like high permeability member is disposed on the back surface of the holding surface of the optical disc with the first antenna interposed therebetween. 42. The optical disc tray according to claim 41.   42. The optical disc tray according to claim 41, wherein the booster antenna is bent at an end surface of the optical disc tray so that the outer shape of the second antenna is perpendicular to the outer shape of the first antenna. The front cover part and the rear cover part are connected in a foldable state at both ends of the side part constituting one side surface when closed, so that the main surfaces of the front cover part and the rear cover part face each other. In the card member that can be mounted so as to cover the outer surface of the front surface cover portion, the rear surface cover portion, and the side surface portion with respect to the optical disc case configured to form a box-shaped outer shape when closed by
A first antenna and a second antenna are connected to each other, and each has a booster antenna that relays signals transmitted and received;
The booster antenna is disposed such that the first antenna is disposed in a region corresponding to the back cover portion, and the second antenna is disposed in a region corresponding to the side surface portion, and the booster The card member, wherein the antenna can be bent at a portion corresponding to a boundary between the back cover portion and the side surface portion.   The booster antenna is fixed to a surface of the card member on the back cover portion side so that a sheet-like high permeability member is disposed between the first antenna and the card member. The card member according to claim 47.   A sheet-like high magnetic permeability member is mounted on either surface of the card member in contact with the surface cover portion, and the card member is mounted on the optical disc case so that the surface cover portion and the back surface cover portion are 48. The card member according to claim 47, wherein the card member is fixed so as to face the first antenna when closed. A front cover part and a back cover part connected in a rotatable state around the end side of each main surface, and a convex holding part fitted on the back cover part and provided on one side of the optical disk. And a disc tray member that holds the optical disc by being fitted in a central hole formed in the disc, and is closed so that the main surfaces of the front cover portion and the back cover portion face each other with the disc tray member interposed therebetween. In the optical disc case configured to form a box-shaped outer shape when being done, a card member accommodated between the disc tray member and the back cover portion,
A first antenna and a second antenna are connected to each other, and each has a booster antenna that relays signals transmitted and received;
The first antenna is disposed such that a center portion thereof coincides with a center of the convex holding portion and an outer shape thereof is parallel to a main surface of the back cover portion, and the second antenna However, on the disk tray member side or the back cover part side, the outer shape is in contact with or close to one side surface when the front cover part and the back cover part are closed. A card member, wherein the booster antenna is fixed to any one surface.   51. The booster antenna is disposed on a surface on the disk tray member side, and a sheet-like high permeability member is disposed between the first antenna and the card member. The card member according to the description. A front cover part and a back cover part connected in a rotatable state around the end side of each main surface, and a convex holding part fitted on the back cover part and provided on one side of the optical disk. And a disc tray member that holds the optical disc by being fitted in a central hole formed in the disc, and is closed so that the main surfaces of the front cover portion and the back cover portion face each other with the disc tray member interposed therebetween. In the manufacturing method of the optical disc case configured to form a box-shaped outer shape when
A booster antenna mounting step of mounting the booster antenna, which is formed in a substantially flat plate shape and relays signals transmitted and received by the first antenna and the second antenna, to the disk tray member;
The booster antenna mounting process includes:
The first antenna is disposed and fixed to the holding surface of the optical disc of the disc tray member or the back surface thereof so that the center portion thereof coincides with the center of the convex holding portion, and the second antenna is An adhering step of protruding from an end of the optical disc tray;
When the booster antenna is bent so that the second antenna is perpendicular to the first antenna and the disc tray member is fitted inside the back cover portion, the second antenna Is a bending step of making contact or approach in parallel with one inner side surface of the back cover part,
A method for manufacturing an optical disc case, comprising:   In the bending step, when the disk tray member to which the booster antenna is attached is pressed and fitted inside the back cover portion, the second antenna is along one inner surface of the back cover portion. 53. The method of manufacturing an optical disc case according to claim 52, wherein the optical disc case is bent by bending.   The booster antenna is manufactured in advance as a booster antenna unit in which the first antenna and the second antenna are integrally formed on a flexible substrate before the step of attaching the booster antenna. 52. A method for producing an optical disc case according to 52. Before the booster antenna mounting step, including a step of fixing a sheet-like high permeability member having a central hole to one surface of the first antenna with the center of each other fixed,
In the fixing step, the booster antenna is fixed to a holding surface of the optical disc so that the high permeability member is disposed between the first antenna and the disc tray member. 53. A method of manufacturing an optical disc case according to claim 52. Before the booster antenna mounting step, including a step of fixing the sheet-like high magnetic permeability member with one surface of the first antenna aligned with the center of each other,
In the fixing step, the booster antenna is fixed to the back surface of the holding surface of the optical disc so that the first antenna is disposed between the high permeability member and the disc tray member. 53. A method of manufacturing an optical disc case according to claim 52. Before the booster antenna mounting step, including a step of fixing a sheet-like high magnetic permeability member having a central hole around the convex holding portion on the holding surface of the optical disc,
53. The method of manufacturing an optical disc case according to claim 52, wherein, in the fixing step, the booster antenna is fixed to a holding surface of the optical disc. Fixing the sheet-like high magnetic permeability member to the opposite surface of the holding surface of the optical disc so that the convex holding portion and the center are aligned with each other;
53. The method of manufacturing an optical disc case according to claim 52, wherein, in the fixing step, the booster antenna is fixed to a holding surface of the optical disc.   A step of fixing a sheet-like high magnetic permeability member to any one of the main surfaces of the front cover portion so as to face the first antenna when the front cover portion and the rear cover portion are closed. 53. The method of manufacturing an optical disk case according to claim 52, further comprising:   When a card member having a sheet-like high permeability member fixed to one surface is closed inside the main surface of the front cover portion, the high permeability member is closed when the front cover portion and the back cover portion are closed. 53. The method of manufacturing an optical disk case according to claim 52, further comprising a step of disposing the first antenna so as to face the first antenna. A front cover part and a back cover part connected in a rotatable state around the end side of each main surface, and a convex holding part fitted on the back cover part and provided on one side of the optical disk. And a disc tray member that holds the optical disc by being fitted in a central hole formed in the disc, and is closed so that the main surfaces of the front cover portion and the back cover portion face each other with the disc tray member interposed therebetween. In the manufacturing method of the optical disc case configured to form a box-shaped outer shape when
A step of fixing a booster antenna, which is formed in a substantially flat plate shape and relays signals transmitted and received by the first antenna and the second antenna, to one surface of the card member;
The first antenna is disposed such that a center portion thereof coincides with a center of the convex holding portion and an outer shape thereof is parallel to a main surface of the back cover portion, and the second antenna However, the card tray member and the back surface cover are arranged so that the outer shape is in contact with or close to one side surface when the front surface cover portion and the back surface cover portion are closed. A step of arranging between the two parts,
A method for manufacturing an optical disc case, comprising: Before fixing the booster antenna to the card member, including fixing the sheet-like high permeability member to one surface of the first antenna with the center thereof fixed to each other;
The booster antenna is fixed to a surface corresponding to the disk tray member side of the card member so that the high permeability member is disposed between the first antenna and the card member. 62. A method of manufacturing an optical disc case according to claim 61, wherein:   In the step of fixing the booster antenna to the card member, after fixing the sheet-like high magnetic permeability member to the surface corresponding to the disk tray member side of the card member, the first antenna is connected to the high magnetic permeability member. 62. The method of manufacturing an optical disk case according to claim 61, wherein the optical disk case is fixed to the card member in a state of being sandwiched. The front cover part and the back cover part are connected so as to be rotatable around the end side of each main surface, and are closed so that the main surfaces of the front cover part and the back cover part face each other. It is sometimes configured to have a box-shaped outer shape, and a convex holding portion is provided inside the main surface of the back cover portion to fit the central hole formed in the optical disc to hold the optical disc. In the manufacturing method of the optical disk case,
A booster antenna that is formed in a substantially flat plate shape and relays signals transmitted and received by the first antenna and the second antenna connected to each other. The first antenna has a convex portion at the center. When the second antenna closes the front cover part and the back cover part, and is arranged so that its outer shape is parallel to the main surface of the back cover part. A method of manufacturing an optical disc case, comprising a step of attaching to one side surface so that the outer shape is in contact with or close to the side surface in a parallel state.   The method of manufacturing an optical disk case according to claim 64, wherein the booster antenna is disposed and fixed inside the back cover portion so that the first antenna surrounds the convex holding portion.   By pressing and fixing the booster antenna to the inside of the back cover portion, the formation portion of the second antenna of the booster antenna is bent along one inner side surface of the back cover portion. 66. A method of manufacturing an optical disc case according to claim 65. Before attaching the booster antenna to the back cover portion, including fixing a sheet-like high permeability member having a central hole to one surface of the first antenna with the center thereof fixed to each other,
66. The booster antenna is fixed to the back cover portion such that the high permeability member is disposed between the first antenna and the back cover portion. Manufacturing method of optical disk case. Before attaching the booster antenna to the back cover part, including fixing a sheet-like high permeability member having a central hole around the convex holding part of the back cover part,
66. The booster antenna is fixed to the back cover portion such that the high permeability member is disposed between the first antenna and the back cover portion. Manufacturing method of optical disk case. Before attaching the booster antenna to the back cover part, including fixing the sheet-like high permeability member to one surface of the first antenna in a centered manner,
65. The booster antenna is fixed to an outer surface of the back cover portion so that the high magnetic permeability member is disposed between the first antenna and the back cover portion. The manufacturing method of the optical disk case as described. The booster antenna is fixed to the outer surface of the back cover part,
The optical disk according to claim 64, wherein after the booster antenna is fixed to the back cover portion, a sheet-like high magnetic permeability member is fixed to the outer surface of the back cover portion with the first antenna interposed therebetween. Case manufacturing method.   A step of fixing a sheet-like high magnetic permeability member to any one of the main surfaces of the front cover portion so as to face the first antenna when the front cover portion and the rear cover portion are closed. The method of manufacturing an optical disk case according to claim 64, further comprising:   When a card member having a sheet-like high permeability member fixed to one surface is closed inside the main surface of the front cover portion, the high permeability member is closed when the front cover portion and the back cover portion are closed. The method of manufacturing an optical disk case according to claim 64, further comprising a step of disposing the first antenna so as to face the first antenna. Forming a case housing integrally connected by injection molding, wherein the front cover portion and the back cover portion are connected in a foldable state at both ends of the side surface portion constituting one side surface when closed;
Disposing a quadrangular transparent film so as to cover the outer surface of the front surface cover portion, the rear surface cover portion, and the side surface portion;
A step of attaching a booster antenna to a card member for package display that can be inserted between the transparent film and the front surface cover portion, the back surface cover portion, and the side surface portion;
Further including
In the step of attaching the booster antenna to the back cover portion, the booster antenna is attached so that the first antenna is disposed on the outer surface of the back cover portion and the second antenna is disposed on the outer surface of the side surface portion. A method of manufacturing an optical disc case, wherein the card member is inserted between the transparent film and the front surface cover portion, the rear surface cover portion, and the side surface portion.   In the step of attaching the booster antenna to the card member, after fixing a sheet-like high magnetic permeability member to one surface of the first antenna so as to be centered on each other, the high magnetic permeability member is attached to the first antenna. 74. The optical disc case according to claim 73, wherein the booster antenna is fixed to the card member so as to be disposed between the card member and a surface corresponding to the back cover portion side of the card member. Method.   In the step of attaching the booster antenna to the card member, after fixing the sheet-like high magnetic permeability member to a surface corresponding to the back cover portion side of the card member, the high magnetic permeability member is connected to the first antenna. 74. The method of manufacturing an optical disc case according to claim 73, wherein the booster antenna is fixed to the card member so as to be sandwiched between the card member.   Prior to the step of attaching the booster antenna to the back cover portion, a sheet-like high magnetic permeability member is placed on one surface of the card member in contact with the front cover portion, and the card member is placed on the optical disc. 74. The method of manufacturing an optical disc case according to claim 73, further comprising a step of fixing the first and second antennas so as to face the first antenna when the front cover portion and the back cover portion are closed when mounted on the case. . It has a convex holding part to hold the optical disk by fitting it in the center hole formed in the optical disk, and the front cover part and the back cover part can rotate around the end part side of each main surface The optical disk is placed in a case housing that is connected in such a state that the holding surface of the optical disk is fitted to the back cover portion with the inner surface facing the inside of the case housing. In the manufacturing method of the optical disc tray constituting the optical disc case to be stored,
A step of attaching a booster antenna, which is formed in a substantially flat plate shape and relays signals transmitted and received by the first antenna and the second antenna, to the optical disc tray, the first antenna being The second antenna protrudes from the end of the optical disc tray so that the central portion thereof coincides with the center of the convex holding portion and is fixed to the optical disc holding surface of the optical disc tray or the back surface thereof. A method of manufacturing an optical disc tray, comprising a step of bringing the optical disc into a finished state.   After fixing a sheet-like high magnetic permeability member having a central hole to one surface of the first antenna so as to be aligned with each other, the high magnetic permeability is interposed between the first antenna and the disk tray member. 78. The method of manufacturing an optical disc tray according to claim 77, wherein the booster antenna is fixed to a holding surface of the optical disc so that a member is disposed.   After the sheet-like high permeability member is fixed to one surface of the first antenna with the center thereof aligned, the first antenna is disposed between the high permeability member and the disk tray member. 78. The method of manufacturing an optical disc tray according to claim 77, wherein the booster antenna is fixed to the back surface of the holding surface of the optical disc.   78. A sheet-like high magnetic permeability member having a central hole is fixed around the convex holding portion of the holding surface of the optical disc, and then the booster antenna is fixed to the holding surface of the optical disc. The manufacturing method of the optical disk tray of description. Fixing the sheet-like high magnetic permeability member to the opposite surface of the holding surface of the optical disc so that the convex holding portion and the center are aligned with each other;
78. The method of manufacturing an optical disc tray according to claim 77, wherein the booster antenna is fixed to a holding surface of the optical disc.

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