JP3072879B2 - Modem device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modem device, and more particularly to a modem device connected between a data terminal (DTE) and a battery pack type digital portable telephone.

Data communication terminals such as personal computers are usually RS2
Data transmission and reception are performed using a 32C interface cable, whereas digital mobile phones transmit and receive serial data using an interface cable.

Therefore, in order to transmit data from the data communication terminal to the digital mobile phone, the interface of the data communication terminal and the interface of the digital mobile phone are different, and therefore, a device for matching the interfaces (hereinafter referred to as a modem device). is necessary.

[0004]

2. Description of the Related Art FIG. 11 shows a conventional example of a modem device inserted and connected between a data communication terminal 1 and a digital portable telephone 3 in this manner. It is composed of a serial circuit with a modem unit 42 as a unit.

The data communication terminal 1 and the analog modem 41 are connected by a digital signal line 43 such as an RS232C interface.
The modem unit 42 and the modem unit 42 are connected by an analog signal line 44, and the modem unit 42 and the external connector 32 of the digital mobile phone 3 are connected by an external interface (digital) cable 45.

In such a conventional example, the data of the RS232C interface output from the data communication terminal 1 is sent to an analog modem 41 via a digital signal line 43 and is once converted into an analog signal.

The analog signal is sent to a modem unit 42 via an analog signal line 44, converted into a digital signal suitable for the interface of the digital portable telephone 3 by the modem unit 42, and then passed through an external interface cable 45. The digital mobile phone 3 takes in the digital signal from the external connector 32 and transmits a digital signal to the wireless transmission path.

The reception is sent from the digital portable telephone 3 to the data communication terminal 1 through the modem unit 42 and the analog modem 41 on the reverse route.

[0009]

As described above, in the prior art, when a data communication terminal is connected to a digital portable telephone, a modem unit, an analog modem, and the like are connected between the data communication terminal and the digital portable telephone by a cable corresponding to each interface. There must be.

[0010] Regarding the power supply to each device,
A data communication terminal requires a DTE battery pack if it is a general type, and an external power supply if it is a desktop type. An analog modem can also be supplied from a personal computer if it has a built-in personal computer or the like, but an external power supply is required for an external type as in the above-mentioned conventional example. The modem unit is supplied with an external power supply or a dry battery, and the digital portable telephone is supplied with a battery pack for the digital portable telephone.

As described above, when performing non-telephone communication using a digital portable telephone, there are many devices that need to be carried in addition to the digital portable telephone, and it is necessary to provide a power supply for each of these devices. There was a problem.

Accordingly, the present invention aims to reduce the number of constituent devices and the number of required power supplies as much as possible in a modem device connected between a data terminal device and a battery pack type digital portable telephone. With the goal.

[0013]

In order to achieve the above object, a modem device according to the present invention, as shown in principle in FIG. 1, includes a fitting portion (31) for a battery pack of a digital portable telephone (3). A) a first fitting portion (21) for fitting to
A second fitting portion (22) provided on a side opposite to the first fitting portion (21) for fitting the battery pack (30), wherein the first and second fitting portions are provided. Parts (21, 22) each have an electrical connection with the digital mobile phone (3) and the battery pack, and the battery pack (30) removed from the digital mobile phone (3) is connected to the second mobile phone (3). When the battery pack is fitted to the fitting section (22), the power of the battery pack is supplied to the digital mobile phone (3).

In this case, the digital portable telephone (3)
Has an external connector (32).
2) and an external interface unit (23) connected to the interface cable.

As shown in principle in FIG. 2, in the present invention, the external connector (33) of the digital mobile phone (3) is connected to the fitting portion (3) of the digital mobile phone (3).
An external connector (24) provided in the first connector (1), wherein the first fitting portion (21) is connected to the external connector (33).
Can be provided.

1 and 2 have an external connector (25) for connecting to the data terminal device (1).

Further, when the data terminal device (1) includes an analog modem, the external connector (2)
5) constitutes an analog interface unit.

Further, a terminal (2) for quick charging of the battery pack is provided.
6) can also be provided.

[0019]

[Action]

[1] In FIG. 1, a battery pack 30 is usually fitted to a fitting portion 31 of the digital mobile phone 3 so that the digital mobile phone 3 can be used alone. The first fitting portion 21 of the modem device 2 is removed from the fitting portion 31 and
Is fitted.

The battery pack 30 is fitted into the second fitting portion 22 provided on the opposite side of the first fitting portion 21 in the modem device 2 so that the power of the battery pack 30 is reduced. Is supplied to the digital mobile phone 3 via the.

Therefore, the data from the digital communication terminal 1 is taken into the modem device 2 from the external connector 25,
After being converted into a predetermined digital signal that matches the interface of the digital mobile phone 3 without performing digital / analog conversion as in the conventional example, the external connector 23
It can be taken into the digital mobile phone 3 from the external connector 32 via the cable 20.

[2] In the present invention shown in FIG. 2, an external connector 33 is provided in the fitting portion 31 of the digital portable telephone 3, and the external connector 33 is connected to the first fitting portion of the modem device 2. When fitting 21 to the fitting portion 31,
It becomes electrically connected to the external connector 24 provided in the first fitting portion 21.

Accordingly, power from the battery pack 30 is supplied to the digital portable telephone 3 via the modem device 2 and data received from the data communication terminal 1 via the external connector 25 is transmitted from the external connectors 24 and 33 to the digital Since it can be provided to the mobile phone 3, the cable 2 between the external connectors 23 and 32 as shown in FIG.
0 is no longer needed.

[3] In the case where the data communication terminal 1 includes an analog modem, the external connector 25 of the modem device 2 becomes an analog external interface connector. 3 to the external connector 32 in a form matched with the interface.

Further, the modem device 2 is also provided with a terminal 26 for quick charging, whereby the battery pack 30 fitted to the modem device 2 can be rapidly charged.

[0026]

3 to 8 show various views when the modem device 2 according to the present invention shown in FIG. 1 is attached (fitted) to a digital portable telephone 3, and FIG. 3 shows this attached state. 4 is a perspective view when viewed from the side of the digital mobile phone 3, and FIG. 4 is a perspective view showing a state where the cover 34 provided on the digital mobile phone 3 is opened and actually used. I have.

FIG. 5 (a) is a front view of the perspective view shown in FIG. 3, and FIG. 5 (b) is a plan view of the front view of FIG. 3 (a). FIG.

FIG. 6 shows a front view of FIG. 5 (a) as viewed from the back, and FIG. 6 (b) also shows FIG.
The figure when seen from the bottom in the front view shown in (a) is shown.

FIG. 7 is a side view of the front view shown in FIG. 5A as viewed from the left side, and FIG.
Also shows a side view when viewed from the right side.

FIG. 9 is a diagram showing a state in which the attached state shown in each of FIGS. 3 to 8 is realized. It shows how 30 is attached.

That is, first, for example, the battery pack 30 is removed from the digital mobile phone 3 and fitted to the second fitting portion 22 of the modem device 2. As a result, an electrode (not shown) provided inside the battery pack 30 is electrically connected to the electrode 27 provided on the second fitting portion 22, and power is supplied to the modem device 2.

As shown in FIG. 10, the modem device 2 is provided with an electrode 28 on a first fitting portion 21. The first fitting portion 21 of the modem device 2 is By fitting into the mating portion 31, the electrode 28 is electrically connected to the electrode 35 provided in the mating portion 31, so that the power of the battery pack 30 is also supplied to the digital mobile phone 3. Become.

Data from the data communication terminal 1 (not shown) is transmitted from the modem device 2 to the interface cable 2.
0 through the external connector 32 of the digital mobile phone 3.
Supplied to

Further, the battery pack 30 can be rapidly charged by connecting a cable 29 from a quick charger (not shown) to the external connector 26 to the modem device 2.

The external connector 26 may be used as an interface connector for another option.

The electrode 30a provided on the battery pack 30
Is a power supply terminal from the AC catcher.

FIG. 10 shows an electrode 28 (which is not visible in FIG. 9) in the first fitting portion 21 of the modem device 2.
Of the battery pack 30 connected to the electrodes 27 of the battery pack 30 (not shown).

[0038]

As described above, according to the modem device of the present invention, the battery pack of the digital portable telephone is removed and fitted into one fitting portion, and the other fitting provided on the other side is provided. Since the power supply from the battery pack is fitted to the digital mobile phone via this modem device, the portable telephone is convenient to carry because it is integrated with the digital mobile phone.

Further, it is possible to eliminate the analog modem which has been required in the past and to reduce the number of cables, thereby realizing cost reduction.

Further, since the power can be supplied to both the modem device and the digital mobile phone by the battery pack of the digital mobile phone, the size and weight can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the principle of a configuration (part 1) of a modem device according to the present invention.

FIG. 2 is a block diagram showing the principle of the configuration (No. 2) of the modem device according to the present invention.

FIG. 3 is a perspective view when the modem device according to the present invention is attached (fitted) to the digital mobile phone and viewed from the digital mobile phone side.

FIG. 4 is a view showing a use state in the perspective view shown in FIG. 3;

FIG. 5 is a front view and a plan view of the perspective view shown in FIG. 3;

FIG. 6 is a rear view and a bottom view of the front view shown in FIG. 5;

FIG. 7 is a left side view of the front view shown in FIG. 5;

FIG. 8 is a right side view of the front view shown in FIG. 5;

FIG. 9 is a diagram for realizing an attached state between the digital mobile phone and the modem device shown in FIGS. 3 to 8;

FIG. 10 is a diagram when the modem device is viewed from the side of the digital mobile phone before attachment.

FIG. 11 is a block diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Data communication terminal (DTE) 2 Modem device 21 1st fitting part 22 2nd fitting part 23-26 External connector 27,28 electrode 3 Digital cellular phone 30 Battery pack 31 Fitting part 32,33 External connector 35 Electrode 20 Interface cable In the drawings, the same reference numerals indicate the same or corresponding parts.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masao Yamazawa 1015 Uedanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Prefecture Inside Fujitsu Limited (72) Inventor Koichi Sawai 2-1-1 Toranomon, Minato-ku, Tokyo NT・ Inside the Mobile Communication Network Co., Ltd. (72) Inventor Masato Mori Inside the NTT Mobile Communication Network Co., Ltd. 2-1-1 Toranomon, Minato-ku, Tokyo (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 11/00-11/10

Claims (6)

(57) [Claims] 1. A modem device (2) connected between a data terminal device (1) and a battery pack type digital portable telephone (3), wherein the battery pack of the digital portable telephone (3) is fitted. A first fitting part (21) for fitting to the fitting part (31); and a first fitting part (21) provided on the side opposite to the first fitting part (21) for fitting the battery pack (30). And a second fitting portion (22), wherein the first and second fitting portions (21, 22) each have an electrical coupling portion with the digital mobile phone (3) and the battery pack. And the digital mobile phone (3)
A modem device characterized in that when the battery pack (30) detached from the connector is fitted to the second fitting portion (22), power of the battery pack is supplied to the digital mobile phone (3). 2. The digital cellular phone (3) has an external connector (32) and an external interface (23) connected to the external connector (32) by an interface cable. The modem device according to claim 1. 3. An external connector (33) of the digital mobile phone (3) is provided at a fitting part (31) of the digital mobile phone (3), and the first fitting part (21) is provided.
2. The modem device according to claim 1, further comprising an external connector (24) connected to the external connector (33). 4. The modem device according to claim 1, further comprising an external connector (25) for connecting to the data terminal device (1). 5. The data terminal device (1) includes an analog modem, and the external connector (25) serves as an analog interface unit.
2. The modem device according to claim 1. 6. A terminal (26) for rapid charging of the battery pack.
The modem device according to any one of claims 1 to 5, further comprising: