JP3389084B2 - Wireless communication 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 wireless communication device to which an IC card can be electrically connected.

[0002]

In recent years, with the progress of telecommunications technology, wireless communication devices such as mobile phones and pagers have become widespread. One of them is I.
A mobile phone using a C card is considered. This is a SIM (Subscriber Identit) in which specific information such as a subscriber number (ID code) is stored as an IC card.
y Module) card is adopted and the SIM card is inserted into the mobile phone, whereby the call (communication) can be performed using the subscriber number of the SIM card. In this case, the above-described specific information includes information such as a memory dial, a last call time, and a call origination history in addition to the subscriber number.

By the way, in the above, when the user inserts the SIM card into the mobile phone and performs a predetermined key operation to use the memory dial stored in the SIM card, for example, the SIM card is removed from the mobile phone. And the memory dial information is expanded from the SIM card to the memory of the mobile phone in response to the access.

However, in other words, this means that SI
To use the memory dial stored in the M card,
It means that it is necessary to access the SIM card from the mobile phone each time. In this case, in general,
Since the information is transferred from the SIM card by serial transfer, the conventional device has a problem that the response speed becomes slow and the current consumption becomes large.

To solve such a problem, it is considered that the specific information stored in the SIM card is expanded in the memory of the mobile phone when the SIM card is inserted into the mobile phone. With this configuration, when the memory dial is used, the memory of the mobile phone can be accessed, and the information can be transferred from the memory by parallel transfer, improving the response speed and reducing the power consumption. Can be realized.

However, in this case, since the specific information of the SIM card is expanded in the memory of the mobile phone, the specific information stored in the memory of the mobile phone before the SIM card is inserted into the mobile phone is erased. There will be a new problem that will happen.

In this case, it is conceivable to increase the memory capacity of the mobile phone and secure a development area in which the specific information of the SIM card is expanded in advance, but this is for increasing the memory capacity. In addition, the cost becomes high, and when the SIM card is not used, the expansion area becomes a free area that is not used, which is inefficient and inferior in realization.

The present invention has been made in view of the above circumstances, and an object of the present invention is to store the information in the storage means when the specific information of the IC card is used when the IC card is electrically connectable. It is an object of the present invention to provide a wireless communication device capable of improving the response speed and reducing the power consumption without erasing the specific information stored in the area.

[0009]

According to the invention of claim 1, the control means detects that the IC card is electrically connected, and includes the subscriber number of the IC card. When the communication is set to communicate based on the specific information, the specific information stored in the storage area of the storage means has its capacity stored according to the comparison between the capacity and the remaining capacity of the storage means. Than the free storage space left in the means
When it is large, it is compressed and stored in the free storage area.
Backed up, while its capacity remains in storage
Is less than or equal to the free storage area
Stored in free storage area without backup
Be done. Then, the control means expands the specific information of the IC card in the empty storage area of the storage means.

That is, since the specific information stored in the IC card is expanded in the storage area of the storage means, when the specific information of the IC card is used, the information is transferred from the IC card by serial transfer. Instead of the above, the data is transferred from the storage area of the storage means by parallel transfer, which can improve the response speed and reduce the power consumption.

Further, in this case, the specific information stored in the storage area of the storage means remains unchanged, as described above, in accordance with the comparison between the capacity and the capacity of the free storage area left in the storage means. It is not erased because it is stored in a free storage area in a state or compressed and backed up. Further, since the area left in the storage means is used as the free storage area, it is not necessary to secure a development area for expanding the specific information of the IC card in advance.
That is, it is not necessary to increase the capacity of the storage means.

According to the invention of claim 6 , the control means detects that the IC card is electrically connected,
When the communication is set based on the specific information of the storage area of the storage means and the specific information of the storage area of the storage means is stored in the free storage area as it is or in the compressed state. , The specific information is
Since the original state is restored, communication can be performed based on the restored specific information.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Below, the present invention is applied to a mobile phone, and a SIM (Subscriber Identity Mo
An example of adopting a dule card will be described with reference to the drawings. First, in FIG. 2 showing the overall configuration of a mobile phone and a SIM card, a “start” key, an “end” key,
A key operation unit 3 including various keys such as “0” to “9” numeric keys and a “scroll” key, a display 4 for displaying a message or a telephone number, a microphone (speaker) 5, and a speaker. (Handset) 6 is provided.

Further, an antenna 7 is provided on the upper surface side of the housing 2 and a slot (not shown) is provided, and the SIM card 8 is inserted into the slot. Has become. In FIG. 2, the SIM card 8
The lower part of is shown inserted into the slot.

Next, the above-mentioned mobile phone 1 and SI
The electrical configuration of the M card 8 will be described with reference to FIG. The control circuit 9 as control means is mainly composed of a microcomputer.
Includes a voice processing unit 10, a data conversion unit 11, and a transmission / reception unit 1.
2 and a storage unit 13 as a storage unit are connected, and the above-described key operation unit 3 and display 4 are also connected. The voice processing unit 10 is connected to the microphone 5 and the speaker 6 described above, and is also connected to the data conversion unit 11. The data conversion unit 11 is connected to the transmission / reception unit 12, and the transmission / reception unit 12 has The antenna 7 described above is connected.

The voice processing unit 10 is adapted to generate voice data by encoding the received signal given from the microphone 5 and output the voice data to the data conversion unit 11. The conversion unit 11 is configured to convert the voice data supplied from the voice processing unit 10 into communication data and output the communication data to the transmission / reception unit 12. Then, the transmission / reception unit 12 modulates the carrier wave with the communication data provided from the data conversion unit 11, thereby transmitting the communication data from the antenna 7 to the base station as a transmission signal.

Further, the transmitting / receiving section 12 demodulates communication data given to the antenna 7 as a received signal from the base station, and the demodulated communication data is converted into the data converting section 11.
The data conversion unit 11 converts the communication data given from the transmission / reception unit 12 into voice data, and outputs the voice data to the voice processing unit 10. Then, the voice processing unit 10 is adapted to generate a voice transmission signal by decoding the voice data given from the data conversion unit 11, and output the voice transmission signal to the speaker 6.

In a predetermined storage area of the storage unit 13, specific information including a subscriber number (ID code), a mobile station number, a memory dial, a last call time and a call history is stored in a predetermined data format. Remembered
When the control circuit 9 is set to communicate with the base station based on the specific information stored in the storage unit 13 described above, that is, when the self-mode is set, the control circuit 9 stores the memory. The specific information stored in the unit 13 is read by parallel transfer, and communication is performed based on the read specific information.

Further, a SIM card interface section 14 is connected to the control circuit 9, and the control circuit 9 is an S
When the IM card 8 is inserted into the slot, the SIM card interface unit 14 is used to
It is adapted to detect that an electrical connection with the card 8 has been made. The SIM card 8 stores the specific information in the same data format as the specific information stored in the storage unit 13 described above.
When the SIM card mode is set to communicate with the base station based on the specific information stored in the card 8, the SIM stores the specific information stored in the SIM card 8. The card is read out by serial transfer via the card interface unit 14, and communication is performed based on the read specific information.

The self mode or the SIM card mode in the control circuit 9 as described above is set to either one by the user performing a predetermined key operation.

Next, regarding the operation of the above-mentioned constitution, in particular,
A case where the SIM card 8 is inserted into the slot of the mobile phone 1 and the control circuit 9 and the SIM card 8 are electrically connected will be described with reference to the flowchart shown in FIG.

First, when the SIM card 8 is inserted into the slot of the mobile phone 1, the control circuit 9 determines whether it is in the self mode or the SIM card mode. Now, when the control circuit 9 determines that the SIM card mode is set (determined as “YES” in step S1), the specific information stored in the predetermined storage area in the storage unit 13 is determined. Is stored in an empty storage area excluding the predetermined storage area and backed up.

Specifically, at this time, the control circuit 9 compares the capacity of the specific information with the capacity of the free storage area, and when the capacity of the specific information is larger than the capacity of the free storage area (in step S2, " After determining "YES"), the specific information is compressed (step S3), and the compressed specific information is stored in a free storage area and backed up (step S4). On the other hand, when the capacity of the specific information is equal to or smaller than the capacity of the free storage area ("NO" is determined in step S2), the specific information is stored in the free storage area and backed up without being compressed ( Step S4).

Then, the control circuit 9 expands the specific information stored in the SIM card 8 into the empty storage area (step S5). As a result, the control circuit 9
Communication is enabled in the SIM card mode (step S6).

On the other hand, when the SIM card 8 is inserted into the slot of the mobile phone 1, the control circuit 9 determines that it is in the self mode (step S1).
In the case of "NO"), it is determined which mode the user was in last time. The control circuit 9 is the SI
When it is determined that the M card mode is set ("YES" is determined in step S7), at this time, the specific information stored in the storage area of the storage unit 13 is stored in the empty storage area and backed up. Therefore, in that case, it is determined whether the data is stored in a compressed state or stored without being compressed.

When the control circuit 9 determines that the specific information stored in the storage area of the storage unit 13 is compressed and stored in the free storage area (determined as "YES" in step S8), The compressed and stored specific information is decompressed and restored (step S9). On the other hand, the control circuit 9 determines that the specific information stored in the storage area of the storage unit 13 is not compressed in the empty storage area, that is, is stored as it is (“NO in step S8”). ") And restore the specific information without decompressing it (step S10). As a result, the control circuit 9 becomes in a communicable state in the self mode (step S11).

As described above, according to this embodiment, the control circuit 9
Thus, when the self is set to the SIM card mode, the specific information stored in the storage area of the storage unit 13 is stored in the state as it is or is compressed and stored in the free storage area to be backed up. To S
Since the specific information stored in the IM card 8 is expanded, when the memory dial of the specific information of the SIM card 8 is read, the information is S.
Instead of being transferred from the IM card 8 by serial transfer, it is transferred from the storage area of the storage unit 13 by parallel transfer, which makes it possible to improve the response speed and reduce power consumption.

In this case, as described above, the specific information stored in the storage area of the storage unit 13 is in the state as it is or in accordance with the comparison between the capacity and the remaining free storage capacity of the storage unit 13. It is not erased because it is compressed and stored in the free storage area for backup. Further, since the remaining area of the storage unit 13 is used as the free storage area, it is not necessary to secure a development area for developing the specific information of the SIM card 8 in advance, that is, the capacity of the storage unit 13 Does not have to be large.

Further, when the control circuit 9 sets the self mode to the self mode and the specific information of the storage area of the storage section 13 is stored in the free storage area as it is or after being compressed, Since the specific information is returned to the original state, communication can be performed based on the restored specific information.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The wireless communication device is not limited to a mobile phone, and may be applied to, for example, a pager or an in-vehicle mobile phone.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Fig. 2] External perspective view

FIG. 3 Flow chart

[Explanation of symbols]

In the drawings, 1 is a mobile phone (wireless communication device), 8 is a SIM
Card (IC card), 9 is a control circuit (control means), 1
Reference numeral 3 is a storage unit (storage means).

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ya ▲ Saki ▼ Hidetoshi Toranomon 2-10-1 Toranomon, Minato-ku, Tokyo NTT Mobile Communications Network Co., Ltd. (56) Reference Japanese Patent Laid-Open No. 5- 114933 (JP, A) JP 9-9359 (JP, A) JP 9-247248 (JP, A) JP 6-291719 (JP, A) JP 4-151943 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04M 1/00 H04M 1/274 H04M 1/66 H04Q 7/38

Claims (6)

(57) [Claims] 1. A storage means having a storage area in which specific information including a subscriber number is stored, and an IC card in which specific information different from the specific information in the storage area of the storage means is electrically connectable. And
In a wireless communication device comprising a control means capable of communicating based on any one of the identification information of the storage area and the identification information of the IC card, the control means is characterized in that the IC card electrically operates. Connected,
And, wherein when it is configured to communicate on the basis of the specific information of the IC card, in response to a comparison between the capacitance and the amount of free storage space left in the memory means of the identification information of the storage area, the The capacity of the specific information in the storage area is
When it is larger than the free storage area left in the storage means
Compresses the specific information in the storage area to
Stored in the area and backed up, and further, the IC
The specific information of the card is expanded in the storage area, and
The storage capacity of the area specific information remains in the storage means.
If the storage area is equal to or smaller than the storage area,
Store specific information in the free storage area without compression
Back up, and the special features of the IC card.
A wireless communication device , wherein fixed information is expanded in the storage area . 2. Specific information including a mobile station number is stored.
Storage means having a storage area and specific information different from the specific information of the storage area of the storage means
The IC card that stores the can be electrically connected,
Identification information of the storage area and identification of the IC card
Communication is possible based on any specific information
In the wireless communication device including a control unit, the control unit is electrically connected to the IC card,
Also, communication will be performed based on the specific information of the IC card.
If it is set, the specific information of the storage area
Capacity and the capacity of the free storage area left in the storage means
The storage capacity of the specific information in the storage area is
When it is larger than the free storage area left in the storage means
Compresses the specific information in the storage area to
Stored in the area and backed up, and further, the IC
The specific information of the card is expanded in the storage area, and
The storage capacity of the area specific information remains in the storage means.
If the storage area is equal to or smaller than the storage area,
Store specific information in the free storage area without compression
Back up, and the special features of the IC card.
The fixed information is expanded in the storage area.
Line communication equipment. 3. Specific information including a memory dial is stored.
Storage unit having a storage area and specific information different from the specific information of the storage area of the storage unit
The IC card that stores the can be electrically connected,
Identification information of the storage area and identification of the IC card
Communication is possible based on any specific information
In the wireless communication device including a control unit, the control unit is electrically connected to the IC card,
Also, communication will be performed based on the specific information of the IC card.
If it is set, the specific information of the storage area
Capacity and the capacity of the free storage area left in the storage means
The storage capacity of the specific information in the storage area is
When it is larger than the free storage area left in the storage means
Compresses the specific information in the storage area to
Stored in the area and backed up, and further, the IC
The specific information of the card is expanded in the storage area, and
The storage capacity of the area specific information remains in the storage means.
If the storage area is equal to or smaller than the storage area,
Store specific information in the free storage area without compression
Back up, and the special features of the IC card.
The fixed information is expanded in the storage area.
Line communication equipment. 4. Specific information including the last call time is stored.
Storage means having a storage area, different specific information from the specific information storage area of the storage means
The IC card that stores the can be electrically connected,
Identification information of the storage area and identification of the IC card
Communication is possible based on any specific information
In the wireless communication device including a control unit, the control unit is electrically connected to the IC card,
Also, communication will be performed based on the specific information of the IC card.
If it is set, the specific information of the storage area
Capacity and the capacity of the free storage area left in the storage means
The storage capacity of the specific information in the storage area is
When it is larger than the free storage area left in the storage means
Compresses the specific information in the storage area to
Stored in the area and backed up, and further, the IC
The specific information of the card is expanded in the storage area, and
The storage capacity of the area specific information remains in the storage means.
If the storage area is equal to or smaller than the storage area,
Store specific information in the free storage area without compression
Back up, and the special features of the IC card.
The fixed information is expanded in the storage area.
Line communication equipment. 5. A record in which specific information including a transmission history is stored.
Storage means having a storage area and specific information different from the specific information in the storage area of the storage means
The IC card that stores the can be electrically connected,
Identification information of the storage area and identification of the IC card
Communication is possible based on any specific information
In the wireless communication device including a control unit, the control unit is electrically connected to the IC card,
Also, communication will be performed based on the specific information of the IC card.
If it is set, the specific information of the storage area
Capacity and the capacity of the free storage area left in the storage means
The storage capacity of the specific information in the storage area is
When it is larger than the free storage area left in the storage means
Compresses the specific information in the storage area to
Stored in the area and backed up, and further, the IC
The specific information of the card is expanded in the storage area, and
The storage capacity of the area specific information remains in the storage means.
If the storage area is equal to or smaller than the storage area,
Store specific information in the free storage area without compression
Back up, and the special features of the IC card.
The fixed information is expanded in the storage area.
Line communication equipment. 6. The control means is characterized in that the IC card is electrically operated.
Specific connection of the storage area of the storage means.
When it is set to communicate based on
And the specific information of the storage area of the storage means is
When it is stored in the area as it is or after being compressed
Is characterized by restoring the specific information
Item 6. A wireless communication device according to items 1 to 5.