JP2002016684A - Portable terminal device and radio card modem - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve radiation efficiency of an antenna when transmission and reception are carried out to a terminal device other than a portable terminal device after a radio card modem is put into a card slot of a portable terminal. SOLUTION: A radio card modem 10 has a connector 17 that can be connected to an antenna 16 placed at a position where a portable terminal device 1 has high radiation efficiency when the modem 10 is put into a card slop 2 of the device 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device and a wireless card modem, and more particularly to an improvement in a connection device between an antenna disposed in the portable terminal device and a wireless card modem.

[0002]

2. Description of the Related Art Conventionally, palmtop type personal computers (hereinafter referred to as PCs) and PDAs (Persons) have been used.
In information communication using al Digital Assistance (al Digital Assistance) or the like, the demand for wireless information communication has been increased in response to portability, and PCMCIA (Personal)
Computer Memory Card Int
international Association), R
el2.1 or JEID (Japan Electronic Industry Development Association) Ve
r. A portable terminal device having a wireless card modem conforming to 4.2 or the like and a card insertion slot for inserting the wireless card modem has been proposed.

Also, an antenna or RF (radio circuit) is provided on the card.
For example, Japanese Patent Application Laid-Open No. 8-65357 discloses a portable terminal device that performs wireless data communication with peripheral devices by inserting a wireless card modem provided with a unit into an insertion slot of a PC. .

The above publication discloses a wireless card modem that can be inserted into a notebook PC.
The card insertion slot 2 is formed on the side of the main body 7 of the PC 1, and a connector (plug seat) 3 compliant with the PCMCIA interface is provided in the card insertion slot 2.

The PC 1 is foldable via a hinge 4, an input operation unit 5 such as a numeric keypad is provided on the main body 7, and a display such as an LCD (liquid crystal display) is provided on the inner surface of the casing on the lid 21. A part 6 is provided.

On the other hand, the casing constituting the wireless card modem 10 is entirely formed in a card shape, and a front end thereof is
A connector (plug) 11 that is fitted to the connector 3 of C1 and directly connected electrically is provided. On the upper surface of the casing, a display unit 14 including LEDs and LCDs, various switch operation units 13, and wireless communication Antenna 12 and the like are provided.

The wireless card modem 10 has a microcomputer (CPU) for controlling the switch operation unit 13 and the display unit 14 and a memory.
1 and a PCMCIA interface unit, a wireless interface unit is provided between the antenna 12 and the CPU, and converts control signals and data transmitted and received via a wireless circuit into wireless signals and baseband signals, and transmits and receives Is performed.

The PCMCIA interface is connected to the PC 1 by fitting the connector 11 to the connector 3, and data exchange is performed according to the PCMCIA specifications.

Japanese Patent Laid-Open Publication No. Hei 10-23174 discloses a portable telephone which can take various forms of use according to the type of communication. When the mobile phone disclosed in this publication is used as a normal mobile phone, a wireless card modem 10 is inserted into a card insertion slot 2 provided in a casing of the mobile phone, and data communication via the PC 1 is performed. As shown in FIG.
The wireless card modem 10 conforming to the CIA is inserted. Since this wireless card modem 10 has a wireless communication function,
Since at least the antenna 12 cannot be inserted into the card insertion slot 2 of the PC 1 because it has the antenna 12, the modulation unit, the demodulation unit, and the RF unit, a part of the wireless card modem 10 is projected from the side wall of the PC 1. Has been established.

[0010]

In the wireless card modem 10 of FIG. 6 described in the prior art, the antenna 12 is set up on the side of the PC 1 even if the antenna 12 is set up. Therefore, the antenna 12 is set up at a low position. So the radiation conditions get worse,
Communication quality cannot be expected.

In the wireless card modem 10 of FIGS. 6 and 7, at least the casing near the antenna 12 protrudes from the side of the PC 1, and the wireless card modem 10 cannot be completely inserted into the PC 1. And it requires careful handling.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to provide an antenna of a portable terminal device having good radiation efficiency by providing an antenna at least on the main body side of the portable terminal device. Wireless card modem 1 through
The portable terminal device and the wireless card modem which perform high-quality communication by transferring the transmission data from 0 and receiving the received data from the antenna of the portable terminal device to the wireless card modem 10 side. Is what you do.

[0013]

SUMMARY OF THE INVENTION The present invention relates to a portable terminal device 1.
A portable terminal device for performing wireless communication by inserting a wireless card modem 10 into a card insertion slot 2 provided in a portable terminal device 1 having an antenna 16 on the portable terminal device 1 side, and a main body 7 of the portable terminal device 1 and a wireless card modem The portable terminal device is characterized in that contact portions 17 and 20 for connecting an antenna are provided between 10.

The present invention relates to a wireless card modem for performing wireless communication by inserting a wireless card modem 10 into a card insertion slot 2 provided in the portable terminal device 1 and having an antenna 16 on the portable terminal device side. 16 and contact part 1 for connection
The wireless card modem is characterized in that the wireless card modems 7 and 20 are provided.

According to the present invention, it is possible to obtain a portable terminal device and a wireless card modem which have good radiation efficiency of the antenna, can transmit and receive good communication quality, and have good operability during portable operation.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a portable terminal device and a wireless card modem according to the present invention will be described in detail with reference to FIGS. FIG. 1 is a perspective view showing a mounted state of a wireless card modem used in the present invention, FIG. 2 is a perspective view showing one embodiment of a method of mounting a wireless card modem on a portable terminal device of the present invention, and FIG. FIG. 4 is a system diagram showing one embodiment of a wireless card modem, FIG. 4 is an explanatory diagram of a portable terminal device applicable to the wireless card modem of the present invention, and FIG. 5 is another configuration diagram showing a method of connecting to an antenna of the present invention. is there.

The wireless card modem 10 shown in FIG. 1 has a wireless communication function mounted in, for example, a PCMCIA interface slot, and is configured to be small and lightweight. Various shapes and sizes are presented for each manufacturer.

The wireless card modem (hereinafter referred to as a PC card) 10 of this embodiment is formed of a synthetic resin into a substantially rectangular card shape.

When the PC card 10 is inserted into the card insertion slot 2 provided in the main body 7 of a laptop personal computer or a notebook personal computer (PC) shown in FIG. 2 as a portable terminal device, for example. P
A connector (plug) 2 that is electrically connected to the connector (plug seat) 3 on the C1 side is formed at the front end of the casing 18.

Lock grooves 15L and 15R are formed on the left and right sides of the card insertion slot 2 to lock the PC card 10 in a completely pushed state, and an external or internal antenna 16 provided on the PC 1 side. An antenna terminal 17 made of a metal plate or the like for connection with the casing is formed, for example, on the left side wall of the casing.

On the other hand, in the card insertion slot 2 of the PC 1, a connector 3 provided on a chassis in the main body 7 and a lock groove 1 are provided.
The lock pins 19L and 19R that lock to the 5L and 15R are erected, and when the PC card 10 is completely inserted into the card insertion slot 2, the antenna contact piece 20 is brought into contact with the antenna terminal 17 to be in an electrically connected state. It is arranged.

The antenna contact piece 20 is connected to the PC 1 or an external or internal antenna 16 provided or provided in various portable terminal devices to be described later via a cable or a microstrip line.

The PC 1 shown in FIG. 2 has a high radiation efficiency by providing the built-in antenna 16 on the back side and the left and right side surfaces of the lid 21 because the PC 21 shown in FIG. An antenna can be configured.

FIG. 3 shows an example of a system diagram in the PC card 10. In the PC 1, the built-in or external antenna 16 is located at a position where transmission and reception can be performed with good radiation efficiency as described above. It is arranged. When the PC card 10 is inserted into the card slot 2, the connector 3 on the PC 1
The antenna contact piece 20 on the PC 1 side is electrically connected to the antenna terminal 17 indicated by a broken line on the PC card 10 side.

In the system diagram of FIG. 3, a connector 11 conforming to PCMCIA is connected to a PCMCIA interface unit 21. The PCMCIA interface unit 21 is connected to a control unit 22 such as a microcomputer (CPU) and a memory 25. It is connected to the radio interface 23 and to the detector (DET) 24 to control the movable contact a of the switch 26. The fixed contact b of the switch 26 is connected to the antenna terminal 17, and the fixed contact c is connected to the antenna 12 provided on the PC card 10.

When the PC card 10 is connected to the PC 1, the PCMCIA interface 21 transits to the interface operating state as a modem with the PC 1 and exchanges data with the PC 1 in accordance with the operation defined in the PCMCIA specification.

The output of the radio interface unit 23 is normally connected directly to the antenna terminal 17 without passing through the switch 26, so that the antenna 1 provided in the PC card 10 is provided.
2 is preferably eliminated, but as described later, P
In this example, a switch 26 is provided as necessary to control the switching so that it can be applied to the PC card 10 having the antenna 12 in the C card 10.

The radio interface 23 has a function of converting control signals and data transmitted and received via a radio circuit into a radio signal and a baseband signal, and further converting the format of the transmission signal and the reception signal.

The memory unit 25 is a wireless interface unit 2
3 and has a function of storing information corresponding to each of the wireless circuits.

It is not necessary to provide the antenna 12 on the PC card 10 side as described with reference to FIGS. In this case, if the external antenna 12 is folded, the card insertion slot 2 of the PC 1 is folded.
So that it can be inserted inside. Therefore, it is preferable that the antenna 12 provided on the PC card 10 is a built-in type. In such a case, the PC card 10 is completely inserted into the card slot 2 of the PC 1.
Is inserted, the radiation efficiency of the antenna 12 decreases.

Therefore, in this example, the switch 2
6, the detection unit 24 detects that the antenna contact piece 20 on the PC1 side is inserted into the antenna terminal 17, and supplies the detection output to the control unit 22. Antenna 1 built in card 10
By switching the movable contact piece a that is always in contact with the fixed contact c of the switch 26 connected to the switch 2 and bringing it to the fixed contact b side, it is possible to switch to the antenna 16 side with good radiation efficiency.

In the above configuration, the PC 1 is used as the portable terminal device.
The case where the PC card 10 of the PCMCIA specification is inserted into the device and connected to the antenna 16 has been described.
h (Bluetooth: short-distance wireless transmission / reception communication interface) mounted infostick (wireless card modem: IS) 10A can be used. This IS10
In the case of A, the portable terminal device into which the IS 10A is inserted may be a digital video camera recorder 30 or a portable recording / reproducing device 32 as shown in FIG.

FIG. 4 shows the PC card 10 or IS1 of the present invention.
0A shows a portable terminal device that can be used. In FIG. 4, 27 is a digital still camera, 28 is a CCD camera, 1 is a PC such as a palmtop PC, notebook PC, laptop PC, or PDA, and 29 is a GPS (Glob).
al Positioning System), 30
Denotes a digital video camera, 31 denotes a mobile phone, 32 denotes a portable recording / reproducing device.
PC card 1 in card insertion slot 2 provided in
By inserting 0 or IS10A, it becomes possible to transmit and receive data information via the antenna 16 mounted or mounted on the most favorable condition of each of the portable terminal devices 1, 27 to 32.

FIG. 5 shows an antenna terminal 17 provided on the PC card 10 side of the present invention and an antenna contact piece 2 provided on the PC 1 side.
0 shows another configuration, in which a pin-shaped plug 20A is fitted to an insulating protrusion 34 protruding above the chassis 33 on the PC1 side to form an antenna contact piece, and one end of the plug 20A is connected to the antenna 16; A jack 17A is inserted into a through hole formed at a position facing the plug 20A on the front side of the PC card 10.
And the jack 17A is connected to the radio interface 23 as an antenna terminal.

It is possible to perform mutual transmission and reception between the various portable terminal devices described above or using Bluetooth, and to perform mutual transmission and reception between the various portable terminal devices on the Internet or the Internet via a wireless access point or directly.

[0036]

According to the portable terminal device and the wireless card modem of the present invention, the portable terminal device has a sufficient space for placing the antenna 16 as compared with the wireless card modem, and the antenna 16 is installed in the most favorable place. , It is possible to transmit and receive high quality data information.

Further, the antenna portion protrudes from the housing of the portable terminal device, and does not hinder the portable terminal device from being operated or operated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mounted state of a wireless card modem of the present invention.

FIG. 2 is a perspective view showing one embodiment of a method of mounting a wireless card modem on a portable terminal device according to the present invention.

FIG. 3 is a system diagram of a wireless card modem of the present invention.

FIG. 4 is an explanatory diagram of a portable terminal device applicable to the wireless card modem of the present invention.

FIG. 5 is another configuration diagram showing the antenna connection method of the present invention.

FIG. 6 is a perspective view showing a method for mounting a wireless card modem of a conventional portable terminal device.

FIG. 7 is another perspective view showing a mounted state of a conventional wireless card modem.

[Explanation of symbols]

1 Personal computer (PC), 2 Card slot, 3, 11 connector, 10 wireless card modem, 12, 16 antenna, 17 antenna terminal, 17A jack, 20 mm ‥ Antenna contact piece, 2
0A plug

Claims (2)

[Claims] 1. A mobile terminal device for performing wireless communication by inserting a wireless card modem into a card insertion slot provided in the mobile terminal device, comprising an antenna on the mobile terminal device side, and a main body of the mobile terminal device. A portable terminal device provided with a contact portion for connecting the antenna between the wireless card modem and the wireless card modem. 2. A wireless card modem for performing wireless communication by inserting a wireless card modem into a card insertion slot provided in a portable terminal device, comprising: an antenna on the portable terminal device side; A wireless card modem, wherein a contact portion is provided on the wireless card modem.