JP2001094677A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal that transfers data of a telephone directory or a ringing melody or the like in terms of a DTMF signal where a format of the data transferred by one transfer operation is devised, a prescribed delimiter code is inserted between data of different items, a type code denoting a kind of data (telephone directory data or ringing melody data or the like) is added to a head of the data, and total digit number data of the transferred data and check sum data can be added to the end of the data. SOLUTION: The communication terminal that can transmit prescribed data stored in its storage means to other communication terminal by using a voice output means, is provided with a data conversion means that converts the prescribed data stored in the storage means into data with a data format denoting addition of information representing a data type, a DTMF conversion means that converts the data whose format is converted by the data conversion means into a DTMF signal and a control means that allows the voice output means to output the DTMF signal converted by the DTMF signal conversion means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal capable of transmitting information about a telephone number and a ring tone stored in a storage means to another terminal or receiving the information at another terminal.

[0002]

2. Description of the Related Art Recently, PHS (Personal ha) has been developed.
In a communication terminal such as an ndyphone system, as a method of transferring the telephone directory data stored in the storage unit to another communication terminal, after converting the data into a DTMF signal,
A method of transferring data by acoustically coupling between communication terminals has already been proposed.

In the above-described method, the data stored in the storage unit of the transmitting communication terminal is converted into a DTMF signal, and the sound is output from the receiver (speaker). This is a method in which data is transferred after being combined, converted again into original data at the transfer destination, and the data is stored in the storage unit.

In general, data transferred by one transfer operation usually has a plurality of types of items. In the case of telephone directory data, it has types such as a name and a telephone number. In such a case, the transferred data is output in a time-division manner for each of a plurality of items, and the receiving communication terminal determines that the item has been changed by means for determining that the item has shifted to a different item. The above-described determination means is a means for making a determination using an output suspension period between data of different items and a means for making a determination based on a shift instruction by a user operation.

[0005]

In the above-described conventional transfer method, it is necessary to use a pause time of data or wait for a user operation, so that extra time is required for time-consuming transfer. In acoustic coupling, since it is necessary to fix the positional relationship between the receiver of the communication terminal that transmits the DTMF signal and the transmitter of the communication terminal that receives the DTMF signal, if the transfer time becomes longer or operation is required during the transfer, There is a disadvantage that user operation becomes complicated.

Furthermore, the receiving communication terminal cannot determine that the data is invalid even if the received data is incorrect. In order to solve these problems, the present invention provides a communication terminal receiver (speaker) that converts data stored in a storage device into a DTMF signal and transmits the data, and a communication terminal transmitter (microphone) that receives the data. For the data transfer method in which data is transferred by acoustic coupling and converted back to the original data again at the transfer destination, the data format of the data transferred by one transfer operation is devised, and a predetermined division between data of different items Insert a code, add a type code indicating the type of transfer data (whether it is a phonebook or incoming melody data) at the beginning of the data, and add the total number of digits data of the transfer data to the end of the data. It is an object to provide a communication terminal to which checksum data can be added.

[0007]

According to a first aspect of the present invention, there is provided a communication terminal capable of transmitting predetermined data stored in a storage means to another communication terminal using a voice output means. A data conversion means for converting predetermined data stored in the storage means into data of a data format to which information indicating a data type is added; and a DT for converting the data converted by the data conversion means into a DTMF signal.
It is characterized by comprising MF signal conversion means and control means for outputting a DTMF signal converted by the DTMF signal conversion means from the audio output means.

In order to achieve the above object, the invention according to claim 4 is characterized in that the predetermined data stored in the storage means is
In a communication terminal capable of receiving from another communication terminal using voice input means, a DTMF signal receiving means for receiving a DTMF signal from the voice input means, and a DTMF signal from a data contained in the DTMF signal received by the receiving means. Data conversion means for recognizing the type of data indicated and converting the data into data of a data format of the recognized type, and storage control means for storing the data converted by the conversion means in the storage means. .

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As a specific example of the communication terminal according to the present invention, a simplified portable telephone (PHS terminal) is taken as an example, and a block diagram of the PHS terminal is shown in FIG. 1 as an embodiment.

The PHS terminal includes an antenna 11, a switch SW 12, a receiving unit 13, a synthesizer 14, and a transmitting unit 1.
5, a radio unit 1 including an RSSI detection unit 16, a modem unit 2 including a digital demodulation circuit 21 and a digital modulation circuit 22, a TDMA decoder 31, a TDMA unit 3 including a TDMA encoder, and an ADPCM-CODEC 4.
1, a communication unit 4 including a PCM-CODEC 42, a control unit 5, a memory 6, a battery 71, and a power supply circuit 72.
And a power supply unit 7 comprising:

The control section 5 includes an operation section 51 composed of various key input sections, an LCD control section 53 for controlling an LCD (liquid crystal display section) 52, and a sounder 5 for generating a ringing tone.
4 and a vibrator 59 for notifying the incoming call by vibration. The configuration described above is a component that the PHS terminal has conventionally provided.

In the PHS terminal according to the present embodiment, in addition to the above configuration, the communication unit 4 has a DTMF modulation unit 45,
The MF demodulation unit 46 is added outside. Further, the control unit 5 includes a DTMF signal reception processing unit 57, a DTMF signal transmission processing unit 58, and a function selection unit 61.

DTMF signal transmission processing means 58 of the control unit
Reads the data to be transferred from the memory 6 and arranges the data into a predetermined data format. After receiving the transfer start instruction from the operation unit 51, the DTMF modulation unit 45 sequentially transmits the data one by one at an appropriate signal transmission timing. Perform output processing.

The DTMF modulator 45 receives the input DTM
The PCM-CODEC unit 42 converts the F signal into an audio signal.
To enter. The input DTMF signal is subjected to D / A conversion, and then supplied to the speaker 43 and output as sound.

Further, the DTMF demodulation unit 46 is provided with a PCM-C
The voice signal of the DTMF signal input from the ODEC unit 42 is converted into special input keys of “*”, “#”, “A”, “B”, “C”, “D” and ten keys of “0” to “9”. Is converted to key data corresponding to. The converted key data is processed by the DTMF signal reception processing means 57 of the control unit.

The DTMF signal reception processing means 57 determines a type code, a division code, and a checksum, and determines a processing method based on a result of the determination. When it is determined that the data is correct, the data is analyzed, and an instruction to store the data in an appropriate area of the memory 6 with a configuration corresponding to the data type is issued. If it is determined that the data is incorrect or undesired, an instruction to display an error message is issued or an instruction to perform a receiving operation is issued again.

The function selecting means 61 of the control unit 5 has a function of receiving telephone directory data from another terminal via the microphone 44,
Function to receive incoming melody data and speaker 4
Functions such as transmitting phonebook data via
This is means for selection by the operation unit 51. After the selection, the operation of each function is started.

The operation of the function selection means is also started when a function related to the telephone directory such as display of a telephone directory is operated or when a function related to a ringing melody such as selection of a ringing melody is operated.

FIG. 2 shows a data format of transfer data according to this embodiment. The data format of the transfer data has a data type code 201 at the beginning,
Finally, the data of the total number of digits of the transfer data and the checksum data 202 are added. In addition, between different items, there is a division code 203 for dividing the items.

The data type code is represented by five digits so that correctness can be determined as in the example shown in FIG. The division code 203 is, for example, “##”, and a code other than the data type code and the division code that does not exist in the transfer data is selected. It is assumed that the total digit number data is represented by, for example, three hexadecimal digits and that a DTMF signal of up to 4096 digits can be handled.

In this embodiment, the data type code indicating incoming melody data is "## 1 ##", and the data type code indicating telephone directory data is "## 2 ##". The incoming melody data is composed of two items, "song name" and "note data", and the number of data items is "2".

The telephone directory data includes "name", "reading", "phone number", "group name" and "E-MAIL address".
The number of data items is “5”.

The checksum 202 shown in FIG. 2 represents key data in hexadecimal data (“*” → E, “#” →
F), all data from the first digit to the position before the checksum 202 are added, and the result is set as the last two digits.

At the time of data reception, the DTMF signal reception processing means 57 of the PHS terminal on the receiving side performs the same calculation as described above, and judges whether the data is correct or not using the checksum 202 and the operation result. All of these operations are performed as software processing of the control unit 5.

FIG. 4 shows an operation example of the receiving terminal and the transmitting terminal. At the transmitting terminal, D
After the mode is set to the TMF signal transmission mode (step 40)
1) When transfer data is selected (step 402),
Data transfer is started by a key operation (such as pressing a transfer start key) that triggers the start of transmission at the transmitting terminal (step 403). When the transmission is completed, a message indicating the completion of the transmission is displayed on the LCD 52 (step 404).

At the receiving terminal, the user first sets the DTMF signal receiving mode (step 40).
3). The receiving process is started by the signal input (step 4).
06) When the transfer of all data is completed, the receiving terminal automatically terminates the reception (step 407),
The correctness of the received data is determined (step 408).

When it is determined that the received data is correct, the mode is shifted to a mode in which the user can confirm the received data, and after the completion, the data is stored and confirmed (step 409). Then, when the user instructs to save, storage in an appropriate area of the memory is started, and transfer is completed (step 410).

FIG. 5 is an operation flowchart of the PHS terminal when transmitting a DTMF signal. In the function selection state (step 501), when a function of transmitting a DTMF signal such as telephone directory data is selected, a DTMF signal transmission mode is set (step 502).

After shifting to the DTMF signal transmission mode, data to be transmitted is selected (step 503). Since the selected data is stored in the memory in a format different from the transfer data format, necessary storage data is read out after selection and is arranged in a desired data format (step 504).

When the preparation for the start of transmission is completed, a state of waiting for a transmission start instruction is entered (step 505). The transmission start instruction is
This is performed by the operation unit 51 (for example, pressing a transfer start key).
When a key operation for starting transmission is performed, the key data is converted into a DTMF signal one digit at a time in order from the first data (step 506), and sound is output from the speaker 43 (step 507).

The process is repeated until all data has been transmitted (steps 509 and 510), but during transmission, a key of the operation unit 51 (such as a transmission interruption key) assigned as a key for instructing transmission interruption is pressed. Then, the transmission is interrupted (step 508).

FIG. 6 is a diagram showing P when receiving melody data.
It is an operation flowchart example of an HS terminal. In the function selection state (step 601), when the user operates the operation unit 51 to select the function of receiving the incoming melody data (step 602), the mode shifts to the incoming melody data receiving mode, and the transmission circuit and the DTMF are transmitted. The signal demodulation unit 46 is activated, and the DTMF input from the microphone 44
The signal is ready to be received (step 603).

When a DTMF signal is input from the microphone 44, conversion from the DTMF signal to key data is performed for each signal, and when five digits are received (step 604), the type code is confirmed (step 604). Step 60
5).

In this embodiment, since the received data is incoming melody data, it is confirmed whether or not the type code is "## 1 ##" according to the data format shown in FIG.

If the type code is other than "## 1 ##", the received data is an error, so an error is displayed on the LCD 52 (step 606), and it is confirmed whether the receiving operation is started again. (Step 607).

If the type code is a desired type code (## 1
##), the input data is received continuously (steps 608 and 609). The incoming melody data is composed of two items as shown in FIG. 3, so it is necessary to secure data of these two items. For that purpose, it is necessary to determine the division code. The received data is confirmed two digits at a time, and a division code "##" is searched for (step 610). When the reception of the section code is confirmed, the received data between the section code and the type code is secured as song name data (step 611).

Subsequently, note data is secured by the same method (steps 612, 613, 614, 615), and data of the total number of digits represented by three digits is secured (steps 616, 6).
17) The value obtained by adding the remaining number of digits 5 to the number of digits before the total number of digits data is compared with the total number of digits data (step 618).

If the data is different, the reception data is wrong, so a reception error is displayed on the LCD 52 (step 619). Then, the data secured so far is discarded, and the receiving operation ends.

If the data match, all the data from the first digit to the total number of digits data are added (calculated as a hexadecimal number) (step 619), and the result is received with the lower two digits following the result. (Step 620), and compares it with the two-digit checksum data (step 621).

If the data is different, the received data is incorrect, so a reception error is displayed on the LCD 52 (step 622). Then, the data secured so far is discarded, and the receiving operation ends (step 627).

If the data matches, the operation shifts to a received data confirmation operation for the user (step 623). If it is an incoming melody, the title of the song is displayed, and the melody is reproduced (step 624).

After the above operation is completed, the user is again asked whether to store the data in the memory (step 625). If the data is to be stored, the music name data and musical note data are stored in an appropriate area of the memory 6 (step 626).

In the above embodiment, the operation at the time of receiving the incoming melody data has been described. However, in the case of receiving the telephone directory data, an operation of receiving five items is performed, and the name, reading, telephone number, Group name, E-MAIL
Get address data.

In preparation for the interruption operation on the transmission side, the DTM
An operation of detecting the time when the F signal is not input and forcibly canceling the reception mode may be added. Also, at the time of reception, data may not be received correctly due to ambient noise and the like. As a countermeasure in this case, a function to reduce the influence of ambient noise by increasing the voice output level of the DTMF signal of the transmitting terminal and lowering the input signal level of the transmission path of the receiving terminal at the discretion of the user. There is a way to add. Audio output level is PCM-CODEC
The input signal level of the transmission path is realized by using the amplifier in the PCM-CODEC as an attenuator. However, each change level is the same. As a function setting, prepare a normal mode and an ambient noise reduction mode, assign a dedicated key to switch these modes in the transfer state, and switch the mode by pressing this key in each of the transmitting and receiving terminals good.

In this embodiment, the PHS terminal has been described as an example. However, if the communication terminal is a communication terminal, the communication method and the wireless terminal are used, but whether or not the terminal is a wired terminal is not limited. .

[0046]

As described above, according to the communication terminal of the present invention, by using the division code for the data format, the time interval between different items at the time of transfer is minimized, and the data using the DTMF signal is used. The effect that the burden of the user operation at the time of transfer can be reduced is obtained.

Further, by adding a type code to the beginning of the data, if data of an undesired type is transferred, it can be determined early that the received data is incorrect, and subsequent useless data transfer is interrupted. The effect that becomes possible is obtained.

Further, it is possible to automatically determine the type of data by using the division code. By adding data with the total number of digits data and the checksum at the end of the data, it is possible to judge whether the received data is correct or not. The effect of avoiding storing the transferred data in a memory or transferring the data to another device can be obtained. As a result, an effect is obtained that the reliability of transfer data does not have to be lost.

[Brief description of the drawings]

FIG. 1 is a simplified portable telephone (PHS) according to an embodiment.
It is a block diagram showing one embodiment of (terminal).

FIG. 2 is an example of a data format of transfer data in the present embodiment.

FIG. 3 is a diagram showing a type code in the embodiment.

FIG. 4 is a diagram illustrating an operation procedure of a transmitting terminal and a receiving terminal in the present embodiment.

FIG. 5 is an operation flowchart of the PHS terminal when transmitting a DTMF signal according to the present embodiment.

FIG. 6 is a diagram illustrating a PH when receiving incoming call melody data according to the present embodiment.
It is an operation flowchart of an S terminal.

[Explanation of symbols]

1 ... Transceiving unit, 2 ... Modulation / demodulation unit, 3 ... TDM
A section, 4 ... Call section 4, 5 ... Control section, 6 ... Memory, 7 ... Power supply section

Continuation of the front page F term (reference) 5K034 AA05 CC01 CC05 DD03 EE03 FF13 HH04 HH09 HH16 HH18 HH63 LL01 MM37 NN04 5K036 AA07 BB01 BB11 DD11 DD25 EE13 JJ02 JJ04 JJ12 JJ15 5K011 NN04 GG21 NN04 BB04 BB21 NN36 NN37 PP03 TT06 UU19 UU20

Claims (6)

[Claims] 1. A communication terminal capable of transmitting predetermined data stored in a storage means to another communication terminal using an audio output means, wherein information indicating a data type is added to the predetermined data stored in the storage means. Data conversion means for converting the data converted by the data conversion means into DTMF signals, and DTMF signals converted by the DTMF signal conversion means are output from the audio output means. A communication terminal, comprising: a control unit. 2. The communication terminal according to claim 1, wherein the predetermined data is telephone directory data stored in the storage unit. 3. The communication terminal according to claim 1, wherein the predetermined data is ring tone data stored in the storage unit. 4. A communication terminal capable of receiving predetermined data to be stored in a storage means from another communication terminal using a voice input means, wherein a DTMF receiving a DTMF signal from the voice input means.
Signal receiving means; data conversion means for recognizing the type of data indicated by the DTMF signal from data contained in the DTMF signal received by the receiving means, and converting the data into data of the recognized type data format; And a storage control means for storing said data in said storage means. 5. The communication terminal according to claim 4, wherein the predetermined data is telephone directory data stored in the storage unit. 6. The communication terminal according to claim 4, wherein said predetermined data is ring tone data stored in said storage means.