JP2763713B2 - Automatic modem selection system using wireless telephone - 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 automatic selection system using a wireless telephone, and more particularly, to a modem wirelessly connected to a computer even where there is no telephone line equipment by using a wireless telephone high-frequency signal. Alternatively, the present invention relates to an automatic modem selection system using a wireless telephone which enables automatic telephone selection.

[0002]

FIG. 3 shows a conventional telephone / modem selection system. In this conventional telephone / modem selection system, a switching system unit 100 for switching and selecting various data input from the telephone lines T and R, and the data transferred from the telephone lines T and R by the switching selection of the switching system unit 100. It comprises a telephone set 102 for transmitting and receiving signals, and a modem processor section 101 for processing the data transferred from the telephone lines T and R by the switching selection of the switching system section 100 and transferring the processed data to the computer 103.

In this conventional telephone / modem selection system, the data signals transferred from the telephone lines T and R are transferred to the telephone set 102 or the modem processor unit 101 by the switching selection of the switching system unit 100 and are processed.

Accordingly, if the telephone lines T and R are always connected by selecting the telephone 102, the data transferred to the telephone lines T and R is transmitted to the telephone 102 through the switching system 100. You. Further, a voice signal and a dialing signal from the telephone 102 are transferred to the telephone lines T and R through the switching system unit 105.

When the switching system unit 100 is switched to the modem processor unit 101 to use the modem, the loop of the telephone set 102 is stopped. And
The data transferred and input from the telephone lines T and R are subjected to signal processing by the modem processor 101 through the switching system 100, and then are processed by the modem processor 1
01 is provided as information to the computer 103 connected thereto.

[0006]

However, in the conventional telephone / modem selection system, in order to use the modem, the modem is always used only by connecting to the telephone lines T and R through the switching system unit 100. Becomes possible. That is, since a modem is usually installed in a room connected to a computer, if there is no telephone line T, R in the room, the telephone line T, R is bothersome.
There is a problem that the R must be installed and connected to the modem through the switching system unit 100. as a result,
Not only is the installation location of the modem limited, but also the problem arises that the periphery of the modem becomes complicated due to the telephone lines T and R.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to enable automatic selection of a modem or a telephone by radio, thereby reducing the complexity around the modem by a telephone line. It is an object of the present invention to provide an automatic modem selection system using a wireless telephone, which eliminates the limitation of the installation location of the modem.

[0008]

In order to achieve the above object, according to the present invention, ring data sent from a fixed device is received by a receiving section of a portable device, and a predetermined number of received ring data is checked to make a wireless communication. A microcomputer that controls the operation of the telephone system, and switching is switched by a control signal output from the microcomputer, and a transmission signal of the fixed device received by the reception unit is sent to a speaker through the first audio signal amplification unit, or through a hybrid. A switching unit for transmitting a signal transmitted from a microphone through a second audio signal amplifying unit or a transmission signal transmitted from a modem through a hybrid to a fixed device through a transmitting unit of a portable device, and a control signal of the microcomputer. Generate ring signal and transfer to modem through hybrid Radiotelephone and a ring generator
In the microcomputer, the modem key of the key input section is operated.
Once created, the link received from the receiver of the mobile device
Control the switching unit regardless of the number of times
Switch the transmitter and receiver of the mobile device to the modem,
The ring signal to the modem by controlling the
And features.

[0009]

[0010]

In the telephone mode, the microcomputer sends the transmission signal of the fixed device, which has received the switching unit at the receiving unit, to the speaker through the first audio signal amplifying unit, and transmits the microphone signal through the second audio signal amplifying unit. Switching to send the signal to the fixed device through the transmitter of the portable device. Then, a telephone call can be made.

When the microcomputer checks a predetermined number of ring data received from the fixed device by the receiving unit of the portable device, the microcomputer automatically switches the switching unit to the modem. Then, the transmission signal of the fixed device received by the reception unit is sent to the modem through the hybrid, and the transmission signal of the modem through the hybrid is sent to the fixed device through the transmission unit of the portable device. At this time, the microcomputer controls the ring generating unit, generates a ring signal from the ring generating unit, and transfers the signal to the modem through the hybrid.

Further, when the modem key is operated, the microcomputer automatically switches the switching unit to the modem immediately regardless of the number of times of ring data from the fixed device. Then, data transfer with another modem is performed wirelessly.

[0013]

FIG. 1 is a block diagram of an automatic modem selection system for a wireless telephone embodying the present invention. The automatic modem selection system includes a fixed device 1 and a portable device 2.

The fixed device 1 is connected to the telephone lines T and R, modulates and amplifies a transmission signal through the telephone lines T and R, and sends out the signal through an antenna ANT1. Also,
The fixed device 1 amplifies and demodulates the high-frequency signal received through the antenna ANT1 and sends it out to the telephone lines T and R.

The portable device 2 has an antenna A of the fixed device 1.
The high frequency signal transmitted from the NT1 is received through the antenna ANT2, amplified and demodulated at a certain level, and transferred to the computer 4 through the modem 3. Further, the mobile device 2 modulates and amplifies the transmission signal transferred from the modem 3 and sends it out through the antenna ANT2.

FIG. 2 is a detailed system configuration diagram of the portable device 2 shown in FIG. In FIG. 2, a reception amplification unit 10 amplifies a fine high-frequency signal of the fixing device 1 received through the antenna ANT2 to a predetermined level and outputs the signal to a demodulation unit 11. The demodulation unit 11 detects the intermediate frequency by mixing the high-frequency signal amplified and output from the reception amplification unit 10 with the local oscillation frequency. The first amplifying unit 12 detects a data signal or an audio signal from the intermediate frequency demodulated by the demodulating unit 11 and amplifies and separates the data signal and the audio signal.

The microcomputer 13 controls the entire system of the radio telephone by selecting the data signal output from the first amplifying unit 12 and the modem key 14a and the talk key 14b provided in the key input unit 14.

The switching section 15 has movable terminals C and D, fixed terminals a and b for the movable terminal C, and fixed terminals a 'and b' for the movable terminal D. When the movable terminal C is connected to the fixed terminal a and the movable terminal D is connected to the fixed terminal a ′ based on the output control signal of the microcomputer 13, the output audio signal of the first amplification unit 12 becomes the first audio signal. The transmission audio signal output to the signal amplification unit 17 and input through the microphone 20 and the second audio signal amplification unit 18 is transmitted to the second amplification unit 22.
Is output to When the movable terminal C is connected to the fixed terminal b and the movable terminal D is connected to the fixed terminal b ′ based on the output control signal of the microcomputer 13, the output audio signal of the first amplification unit 12 is output to the hybrid 21. Output from the modem 3 through the hybrid 21 to the second
The signal is output to the amplifier 22.

The first audio signal amplifier 17 amplifies the audio signal of the first amplifier 12 selected by the switching unit 15 to a predetermined level and outputs the signal to the speaker 19. The ring signal generator 16 generates a ring signal based on the control signal output from the microcomputer 13.

The hybrid 21 transfers the audio signal of the first amplifier 12 and the ring signal of the ring signal generator 16 selected by the switching unit 15 to the modem 3 and simultaneously switches the audio signal received from the modem 3. Transfer to unit 15.

The second amplifying unit 22 includes the switching unit 15
Amplifies and outputs the transmission audio signal from the second audio signal amplifying unit 18 and the audio signal of the modem 3 and the data signal output from the microcomputer 13 selected by. The modulator 23 modulates the transmission signal amplified by the second amplifier 22 to a high frequency and outputs it. The transmission amplification unit 24 amplifies the high-frequency signal modulated by the modulation unit 23 and radiates it through the antenna ANT2.

Next, the operation and effect of the system for automatically selecting a modem for a wireless telephone configured as described above will be described. First, when the user uses it as a wireless telephone,
Call key 14 of key input unit 14 provided in portable device 2
Press b. In response to a key signal based on the operation of the call key 14b, the microcomputer 13 controls the movable terminals C and D of the switching unit 15 to connect to the fixed terminals a and a '. Thereby, the transmission data of the microphone 20 is input to the second amplification unit 22 of the transmission unit through the second audio signal amplification unit 18.

The second amplifier 22 amplifies the transmission data and outputs the amplified data to the modulator 23. Then, the modulator 23 modulates the input transmission data to a high frequency. The modulated high-frequency signal is amplified through the transmission amplifier 24 and sent out to the fixed device 1 through the antenna ANT2. Fixing device 1
Receives the high-frequency signal of the portable device 2 through the antenna ANT1, converts it into data and transmits it through the telephone lines T and R. The fixed device 1 converts data received through the telephone lines T and R into a high-frequency signal and outputs the high-frequency signal to the portable device 2 through the antenna ANT1.

The fine high-frequency signal transmitted from the fixed device 1 is transmitted to the reception amplifier 1 of the portable device 2.
The signal is amplified to a predetermined level through 0 and input to the demodulation unit 11. The demodulation unit 11 mixes this high-frequency signal with the local oscillation frequency, detects an intermediate frequency, and outputs it to the first amplification unit 12.

The first amplifier 12 detects a data signal or a voice signal from the intermediate frequency demodulated through the demodulator 11. Then, the first amplifying unit 12 outputs the audio signal to the movable terminal C of the switching unit 15 and outputs the data signal to the microcomputer 13.

The audio signal output to the switching section 15 is amplified to a predetermined level by the first audio signal amplifying section 17 through the movable terminal C and the fixed terminal a and output to the speaker 19. Further, the audio signal passed through the microphone 20 is amplified by the second audio signal amplifier 18, and then is amplified by the second amplifier 22 through the fixed terminal a ′ and the movable terminal D of the switching unit 15. The amplified audio signal is modulated into a high-frequency signal by the modulator 23, amplified through the transmission amplifier 24, and transmitted to the fixed device 1 through the antenna ANT2.

In such a state, when making a call using the modem 3, the modem key 1 of the key input unit 14 is used.
Press 4a. The microcomputer 13 recognizes the operation of the modem key 14a and connects the movable terminals C and D of the switching unit 15 to the fixed terminals b and b '. The movable terminals C and D are fixed terminals b,
When connected to b ′, the signal transferred from the computer 4 is processed by the modem 3 and transmitted to the switching unit 15 through the hybrid 21. Switching unit 1
The signal from the computer 4 transmitted to 5 is amplified to a predetermined level by the second amplifying unit 22 of the transmitting unit through the fixed terminal b ′ and the movable terminal D, and is input to the modulating unit 23.

The modulator 23 modulates the input transmission signal to a high frequency and amplifies the signal through the transmission amplifier 24. The transmission amplifier 24 converts the amplified high-frequency signal into an antenna AN.
The telephone line T, R is sent out to the fixed device 1 through T2.
Will be output to

Further, the telephone lines T and R and the fixing device 1
As described above, the transmission signal of another modem received through the mobile terminal 2 is output to the hi-blit 21 through the receiving terminal 10, the demodulating unit 11, the first amplifying unit 12, and the movable terminal C and the fixed terminal b of the switching unit 15. You. Then, the transmission signal is transferred from the hybrid 21 to the modem 3.

When a ring signal is received from another modem via the telephone lines T and R, the fixed device 1 detects the ring signal, modulates the data based on the ring signal to a high frequency, and transmits the data through the antenna ANT1. Send to mobile device 2. The reception amplifier 10 of the portable device 2 amplifies the high-frequency signal transmitted from the fixed device 1 and demodulates it.
Output to 1. The demodulation unit 11 mixes the high-frequency signal with the local oscillation frequency and outputs an intermediate frequency to the first amplification unit 12.

The first amplifier 12 detects a ring signal from the input intermediate frequency and outputs it to the microcomputer 13. When a predetermined number of ring data is input, the microcomputer 13
It controls the ring generator 16 to output a ring signal to the modem 3 through the hybrid 21. At the same time, the microcomputer 13 sets the movable terminal C of the switching unit 15
D is connected to the fixed terminals b and b '.

Therefore, the signals of the other modems transmitted from the fixed device 1 are received by the reception amplifier 10 and the demodulator 1 of the portable device 2.
1. The signal is transferred to the computer 4 through the first amplifier 12, the movable terminal C, the fixed terminal b, the hybrid 21, and the modem 3. On the other hand, the transmission signal transmitted from the computer 4 includes the modem 3, the hybrid 21, the fixed terminal b ', the movable terminal D, the second amplifier 22, the modulator 23, and the transmission amplifier 24.
And transmitted to the fixed device 1 through the antenna ANT2 and transferred to another modem.

When the modem key 14a of the key input unit 14 is pressed while ring data is being input to the microcomputer 13, the microcomputer 13 immediately switches the movable terminals C and D to the fixed terminal b regardless of the number of ring data. , B '. At the same time, the microcomputer 13
Is transmitted to the modem 3 via the hybrid 21 to receive a telephone call.

As described in detail above, in this embodiment, when the ring data sent from the fixed device 1 of the wireless telephone is received and analyzed by the portable device 2 and a predetermined number of ring signals are received, the switching unit 15 Is automatically switched to the modem 3, so that the modem 3 can communicate without connecting the telephone lines T and R directly to the modem 3.

In the telephone mode, the switching unit 15 is switched to a transmitter / receiver (speakers 19, 20 and the like), so that a telephone call can be made wirelessly. Further, when the modem key is operated, the microcomputer 13 immediately switches the switching unit 15 automatically to the modem irrespective of the number of ring data from the fixed device 1, so that the data transfer with another modem is immediately performed by wireless. It is performed in.

[0036]

As described in detail above, according to the present invention,
The automatic selection of a modem or a telephone can be performed by radio, and there is an excellent effect that the complexity around the modem by the telephone line is eliminated and the installation place of the modem is not limited.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a modem automatic selection system for a wireless telephone embodying the present invention.

FIG. 2 is a detailed system configuration diagram of a portable device in an automatic modem selection system for a wireless telephone embodying the present invention.

FIG. 3 is a configuration diagram of a conventional telephone / modem selection system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed device 2 Portable device 3 Modem 4 Computer 10 Reception amplification part 11 Demodulation part 12 First amplification part 13 Microcomputer 14 Key input part 14a Modem key 15 Switching part 16 Ring signal generation part 22 Second amplification part 23 Modulation part 24 Transmission amplification Department T, R telephone line

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-44454 (JP, A) JP-A-62-139170 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04B 7/24-7/26 H04M 1/00 H04Q 7/00-7/38

Claims (1)

(57) [Claims] 1. A receiving unit (10, 11, 12) of a portable device (2) for receiving ring data sent from a fixed device (1).
And a microcomputer (13) for controlling the operation of the system of the radio telephone by checking a predetermined number of times of the received ring data, and switching is switched by a control signal output from the microcomputer (13). (10,11,
The transmission signal of the fixing device (1) received in 12) is sent to the speaker (19) through the first audio signal amplifier (17), or the modem (3) through the hybrid (21).
To the second audio signal amplifying unit (1).
8) The transmission signal from the microphone (20) through the microphone (2) or the transmission signal from the modem (3) through the hybrid (3) is transmitted through the transmitter (22, 23, 24) of the portable device (2) to the fixed device (1). switching unit for sending to) and (15), the radiotelephone comprising ring generator to be transferred to the modem (3) and (16) through the hybrid (21) generates a ring signal through the control signal of the microcomputer (13)
The microcomputer (13) is a modem key of the key input section (14).
-(14a) is operated, the receiving unit of the portable device (2)
Ring data received from (10,11,12)
Controlling the switching unit (15) regardless of the number of times
Transmission unit (22, 23, 24) and reception unit of portable device (2)
Switch (10,11,12) to modem (3),
Control the ring generator (16) to transmit the ring signal to the modem
(3) A wireless telephone mode
Dem automatic selection system.