JP4303173B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to a portable electronic device such as a cellular phone provided with a magnetic recording device such as an HDD (Hard Disk Drive Device) in one housing and a wireless communication module such as a non-contact IC module in the other housing. Is.

  Recently, some mobile phones have been proposed, which are equipped with a non-contact IC module having a wireless communication function, or with a removable IC card equipped with a non-contact IC module. It's getting on. The non-contact type IC module is used for, for example, a railway ticket / commuter pass function, an electronic money function, a prepaid function, and an identification card function. For example, when a user holds a mobile phone equipped with a non-contact type IC module over a reader / writer unit (read / write device) provided in an automatic ticket gate at a station, wireless communication is performed and the ticket gate is automatically performed. it can. Alternatively, when purchasing a product, a mobile phone equipped with a non-contact IC module can be paid by wireless communication with a reader / writer installed in the store.

On the other hand, data handled by mobile phones includes voice data, image data, character data, etc. In order to meet the demand for higher sound quality and higher image quality in recent years, more and more large-capacity memory has become necessary. Yes. However, since the semiconductor memory used in the past is expensive and does not have a large capacity, it is considered to use an HDD that performs magnetic recording / reproduction capable of recording at a relatively low cost and a large capacity. Recently, a small HDD has been developed and can be built into a mobile phone (see, for example, Patent Document 1). Therefore, in the near future, there is a high possibility that a mobile phone incorporating a contactless IC module and an HDD will be realized.
JP 09-65268 A

A non-contact type IC module generally comprises an IC (semiconductor integrated circuit) chip and an antenna coil. The antenna coil performs wireless communication with the IC chip and an external device such as a reader / writer, and receives electromagnetic force from the external device to generate electromagnetic induction. The power generated by the power supply is supplied as a power source for the IC chip. As described above, when a mobile phone incorporating a non-contact type IC module and HDD passes, for example, an automatic ticket gate, the reader / writer unit of the automatic ticket gate generates inductive power toward the non-contact type IC module. The constant magnetic force is out. Further, the IC chip and the reader / writer perform radio communication using electromagnetic waves. For this reason, the magnetic force and electromagnetic wave may affect the HDD, which may cause data destruction and HDD malfunction. Note that such problems are not limited to mobile phones, but are also present in other portable electronic devices such as PDAs and music playback devices.
Accordingly, it is an object of the present invention to solve the above problems and reduce the influence of magnetic force and electromagnetic waves from a reader / writer on the HDD.

The portable electronic device according to the present invention is a portable electronic device in which a first casing and a second casing are connected so as to be openable and closable, and a magnetic recording device is provided in the first casing, and the second casing A wireless communication module is provided in a housing, and an electromagnetic wave shielding member is provided between the magnetic recording device and the wireless communication module in a closed state of the first housing and the second housing. Features.
The first casing and the second casing are arranged so as to overlap in the closed state, and the electromagnetic wave shielding member includes the magnetic recording device and the wireless communication module facing each other in the closed state. It is characterized by being located between .

Furthermore, the portable electronic device according to the present invention is characterized in that the first casing includes at least a display unit, and the second casing includes at least a key operation unit.
The key operation unit of the portable electronic device according to the present invention includes a key sheet containing an electromagnetic wave shielding material in a rubber sheet in which a plurality of operation keys are integrally arranged, and the key sheet is the electromagnetic wave shielding member. It is characterized by being.

Furthermore, the portable electronic device according to the present invention is characterized in that the wireless communication module is a non-contact type IC module including an IC chip and an antenna coil.
In the portable electronic device according to the present invention, the magnetic recording device is a hard disk drive device.

  According to the present invention, since the wireless communication module such as the non-contact type IC module and the magnetic recording device such as the HDD are provided in separate housings, the two are separated from each other. Can reduce the influence on the magnetic recording apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an external perspective view of a foldable mobile phone as an openable portable electronic device including two housings according to an embodiment of the present invention as seen from the front. FIG. 2 is an external perspective view in which a part of the foldable mobile phone shown in FIG. 1 is viewed from the back side.
In FIG. 1 and FIG. 2, a mobile phone (mobile electronic device) 10 includes a first housing 1 and a second housing 2. The first casing 1 and the second casing 2 can be opened and closed by being foldably connected via a hinge portion 3. The display unit 4 and the speaker unit 5 are provided on the facing surface 1a of the first casing 1 that faces the second casing 2 in the closed state, and the HDD section (magnetic) is provided inside the first casing 1. Recording device) 6 is provided. In addition, a key operation unit 7 and a microphone 9 are provided on the facing surface 2a of the second housing 2 facing the first housing 1 in the closed state, and the first housing 2 is not in contact with the inside. A type IC module (wireless communication module) 8 is provided, and a telescopic antenna 11 for communicating with a base station is provided at the end of the second housing 2 on the hinge 3 side.

  The key operation unit 7 includes a multi-function operation key 12 having a four-way key, a determination key, etc., an operation key 13 for operation guidance, an operation key 14 for mail, an operation key 15 for web connection, an operation key 16 for a phone book, An operation key 17 including keys such as 0 to 9 ** and a key for calling / ending a call is arranged. The non-contact type IC module 8 has a configuration in which an IC chip 18 and an antenna coil 19 are connected. For example, a battery cover that forms a part of the outer surface opposite to the facing surface 2a of the second housing 2. It arrange | positions at the inner surface side (not shown).

  FIG. 3 shows a key sheet 20 used in the key operation unit 7. The key sheet 20 is configured such that the operation keys 12 to 17 are integrally provided on a rubber sheet 24 formed in a sheet shape as illustrated. Further, the rubber sheet 24 is made by adding an electromagnetic shielding material such as ferrite to an elastic material such as rubber. Therefore, the key sheet 20 functions as an electromagnetic wave shielding member.

FIG. 4 is a block diagram showing the configuration of the mobile phone 10, and parts corresponding to those in FIGS. 1 and 2 are given the same numbers.
In FIG. 4, reference numeral 21 denotes a control unit such as a CPU that controls the whole, and reference numeral 22 denotes a wireless communication unit for making a call as the mobile phone 10, which is connected to the antenna 11. 23 is a voice processing unit that processes the voice signal from the microphone 9 and sends it to the wireless communication unit 22, and a voice processing unit that processes the voice signal received by the wireless communication unit 22 and sends it to the speaker unit 5. A ROM 26 is a processing RAM. Reference numeral 6 denotes the HDD unit, which stores predetermined data such as image data and audio data. 8 is a non-contact type IC module that wirelessly transmits and receives data to and from a reader / writer unit such as an automatic ticket gate. 7 is the key operation unit, and 4 is the display unit.

FIG. 5 shows an example of the usage state of the cellular phone 10 in a state in which the first casing 1 and the second casing 2 are folded (closed state), and data is read by the reader / writer unit 28 of the automatic ticket gate 27. A state when receiving / transmitting and receiving a magnetic force 29 is schematically shown.
In FIG. 5, the cellular phone 10 in the closed state has the first casing 1 and the second casing 2 overlapped as shown in the figure, and the display unit 4 and the key operation unit 7 face each other. The HDD unit 6 and the non-contact type IC module 8 are arranged so as to face each other through the display unit 4 and the key operation unit 7.

The user who owns the mobile phone 10 passes the antenna coil 19 of the non-contact type IC module 8 of the second housing 2 while holding it over the reader / writer unit 28. As a result, predetermined data is transmitted and received between the non-contact type IC module 8 and the reader / writer unit 28, and an automatic ticket gate process is executed.
Further, a constant magnetic force 29 is generated from the reader / writer 28 for generating electric power by electromagnetic induction in the antenna coil 19 of the non-contact type IC module 8.

At this time, since the HDD unit 6 and the non-contact type IC module 8 separately provided in the first casing 1 and the second casing 2 can be separated, the non-contact type IC module performed at a short distance. Even if data is transmitted / received between the reader / writer unit 28 and the reader / writer unit 28, the influence of the magnetic force 29 and electromagnetic waves on the HDD unit 6 can be reduced. Further, when used in the open state, the HDD unit 6 and the non-contact type IC module 8 can be further separated from each other than in the closed state, so that the influence of the magnetic force 29 and electromagnetic waves on the HDD unit 6 can be further reduced. it can.
Further, even if this magnetic force 29 acts on the HDD unit 6 of the mobile phone 10 held in the closed state, the magnetic unit 29 serves as a magnetic shielding member disposed between the non-contact type IC module 8 and the HDD unit 6. Since it is shielded by the key sheet 20, this magnetic force 29 can be prevented from reaching the HDD unit 6. Further, electromagnetic waves due to communication between the reader / writer unit 28 and the non-contact type IC module 8 are also shielded by the key sheet 20.

In the present embodiment, the key sheet 20 in which the rubber sheet 24 contains an electromagnetic wave shielding material is used as the electromagnetic wave shielding member. However, the present invention is not limited to this. The electromagnetic shielding material may be used for at least one of the facing surfaces 1a and 2a of the casing 1 or the second casing 2.
Further, the non-contact type IC module 8 may be composed of, for example, an IC card, and the IC card may be detachable from the mobile phone 10, and the HDD unit 6 may be detachable from the mobile phone 10.
Furthermore, the antenna coil 19 may be a charging device for charging a battery of a mobile phone.
In addition to ferrite, permalloy, silicon steel, amorphous alloy, or the like may be used as the electromagnetic shielding material.
Moreover, in this embodiment, although the electromagnetic wave shielding material was contained in the rubber sheet 24 etc., you may use the plate-shaped body and sheet-like body which consist of an electromagnetic wave shielding material as an electromagnetic wave shielding member.

Furthermore, the method of opening and closing the first casing 1 and the second casing 2 is not limited to the folding type described above, and the two casings are rotated around the axis extending in the thickness direction of the casing. It may be a system that opens and closes, or a system that slides two housings together to open and close. In any method, the closed state indicates a state in which two housings overlap each other, and the open state indicates a state in which the two housings are separated as shown in FIGS.
In the present embodiment, the HDD unit 6 is provided in the first casing 1 and the non-contact type IC module 8 is provided in the second casing 2, but the non-contact type IC is provided in the first casing 1. The module 8 may be provided, and the HDD unit 6 may be provided in the second housing 2.

As described above, according to the mobile phone 10 according to the present embodiment, the HDD 6 and the non-contact type IC module 8 are provided separately in the first casing 1 and the second casing 2, so that the non-contact type The magnetic force 29 applied from the reader / writer unit 28 to the antenna coil 19 of the IC module 8 or the electromagnetic wave for communication adversely affects the HDD unit 6.
In addition, since the sheet-like key sheet 20 containing an electromagnetic wave shielding material is used for the key operation unit 7, the non-contact type IC module 8 and the reader / writer in the closed state of the first casing 1 and the second casing 2. Even if the writer unit 28 communicates, the magnetic force 29 and the electromagnetic wave can be prevented from adversely affecting the HDD unit 6.
Furthermore, since it is not necessary to provide an electromagnetic wave shielding member separately, the weight is not increased and the appearance design is not impaired.
Although the present embodiment has been described using a mobile phone, the present invention is not limited to this, and any portable electronic device capable of at least wireless communication such as a personal digital assistant (PDA) may be used.

It is the external view seen from the front in the open state of the foldable mobile telephone by embodiment of this invention. FIG. 2 is a schematic view of the mobile phone of FIG. It is a block diagram which shows a key sheet. It is a block diagram which shows the structure of the mobile telephone by embodiment of this invention. 1 is a schematic side view showing a state in which a mobile phone according to an embodiment of the present invention is used in an automatic ticket gate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st housing | casing 2 2nd housing | casing 4 Display part 6 HDD part (magnetic recording device)
7 Key operation section 8 Non-contact IC module (wireless communication module)
10 Mobile phones (mobile electronic devices)
18 IC chip 19 Antenna coil 20 Key sheet 24 Rubber sheet 29 Magnetic force

Claims (6)

In the portable electronic device in which the first housing and the second housing are connected to be freely opened and closed,
A magnetic recording device is provided in the first casing, a wireless communication module is provided in the second casing ,
An electronic apparatus comprising an electromagnetic wave shielding member positioned between the magnetic recording device and the wireless communication module in a closed state of the first housing and the second housing . The first casing and the second casing are arranged to overlap in the closed state,
The portable electronic device according to claim 1, wherein the electromagnetic wave shielding member is positioned between the magnetic recording device and the wireless communication module facing each other in the closed state .   The portable electronic device according to claim 1, wherein the first casing includes at least a display unit, and the second casing includes at least a key operation unit.   The said key operation part contains the key sheet | seat containing the electromagnetic wave shielding material in the rubber sheet | seat with which the several operation key was integrally arrange | positioned, The said key sheet | seat is the said electromagnetic wave shielding member, The said electromagnetic wave shielding member is characterized by the above-mentioned. The portable electronic device described.   5. The portable electronic device according to claim 1, wherein the wireless communication module is a non-contact type IC module including an IC chip and an antenna coil.   The portable electronic device according to any one of claims 1 to 5, wherein the magnetic recording device is a hard disk drive device.

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