CN2261705Y - wireless phone adapter - Google Patents

Abstract

The wireless telephone adapter is composed of a fixed transponder main machine and a plurality of mobile transponder auxiliary machines, the main machine and the auxiliary machines are communicated through a frequency modulation receiving unit 1, a frequency modulation transmitting part 2 and an antenna unit 6, and the wireless telephone adapter comprises a pilot frequency oscillating unit 3, a pilot frequency decoding unit 4 and an interface unit 5, wherein the main machine is connected with a telephone network through a line input connecting terminal 7, and the interface unit is connected with a common telephone through a telephone socket 8. Through the utility model discloses a wireless telephone repeater can realize turning into cordless telephone with one or many auxiliary units and with the ordinary telephone that is connected with it equally many and use, can be in 30 meters within ranges from the host computer through host computer and telephone network cordless communication, is fit for the ordinary telephone of any grade or style, and repeater simple structure, and the cost is lower.

Description

wireless phone adapter

The utility model relates to the communication field, in particular to an additional device for a telephone, more specifically to a wireless telephone transponder capable of making an ordinary telephone into a cordless telephone

Existing cordless telephones provide the various conveniences that can be freely moved within a certain range without being limited by the length of the telephone connection during a call, but this cordless telephone has a higher price, and the optional style of its appearance is similar to that of an ordinary telephone. Relatively few, and if existing ordinary telephone is replaced with existing cordless telephone, then ordinary telephone can no longer be used, causes waste. In addition, the existing cordless phones generally only have one base unit and one sub-unit. If more than one user wishes to use the phone in their respective places, only one mobile phone, that is, the sub-unit, is not enough.

The purpose of this utility model is to provide a wireless telephone adapter, which can use the existing ordinary telephone to realize the cordless telephone function. Through this wireless telephone adapter, one or more ordinary telephones can be transformed into a cordless telephone handset The utility model does not waste the existing ordinary telephones, but also realizes cordless communication between any number of mobile phones and the public telephone network.

The purpose of this utility model is achieved by constructing a wireless telephone adapter consisting of a fixed transponder main unit and a plurality of mobile transponder subunits, the fixed transponder main unit including a frequency modulation receiving unit 1 and a frequency modulation transmitting part 2 , pilot frequency oscillation unit 3, pilot frequency decoding unit 4 and telephone interface circuit unit 5, antenna unit 6, telephone line input connection end 7, the radio frequency input end of described antenna unit 6 and described frequency modulation receiving unit 1, described frequency modulation The radio frequency output end of transmitting unit 2 is connected, and the output end of described FM receiving part 1 is connected with described telephone interface circuit unit 5, pilot frequency decoding unit 4, and an output end of described pilot frequency decoding unit 4 is connected with described telephone interface The circuit unit 5 is connected, the pilot oscillator unit 4 is connected with the telephone interface circuit unit 5, one output end of the telephone interface circuit unit 7 is connected with the other input end of the radio frequency transmitting unit 2, and the telephone The output end of the interface circuit unit 5 and an input end of the pilot frequency oscillating unit 3 are connected to the input connection end 7 of the telephone line, and each of the plurality of mobile transponder auxiliary machines includes an FM receiving unit 1', FM transmitting part 2', pilot oscillating unit 3', pilot decoding unit 4' and interface unit 5', antenna unit 6', telephone input socket 8, the antenna unit 6' and the FM receiving unit 1' The RF input end is connected to the RF output end of the FM transmitting unit 2', the output end of the FM receiving part 1' is connected to the telephone interface circuit unit 5' and the pilot decoding unit 4', and the pilot decoding An output end of the unit 4' is connected to the interface unit 5', the pilot oscillation unit 4' is connected to the interface unit 5', an output end of the interface unit 5' is connected to the radio frequency transmitting unit 2 ' is connected to the other input end of the interface unit 5', and an input end of the pilot oscillation unit 4' is connected to the telephone socket 8.

According to the wireless telephone adapter provided by the utility model, it is characterized in that each of the FM receiving parts 1 and 1' includes an input loop unit 11, a frequency selection high-amplification unit 12, a first frequency mixing unit 13, a second A local oscillator unit 14, a first intermediate amplifier unit 15, a ceramic crystal oscillator unit 16, a second intermediate amplifier unit 17, a double-T filter unit 18, a second frequency mixing unit 19, a second local oscillator unit 1A, a demodulation unit 1B, Amplifying unit 1C, the input loop unit 11 is connected between the antenna unit 6 and the frequency selection high-amplification unit 12, and the frequency selection high-amplification unit 12 is connected between the input loop unit 11 and the first Between the frequency conversion units 13, the first local oscillator unit 14 is connected to the other input end of the first frequency conversion unit 13, and the output end of the first frequency mixing unit 13 is connected to the first intermediate amplifier unit 15 , the ceramic crystal oscillator unit 16 is connected between the first intermediate amplifier unit 15 and the first input end of the second frequency mixing unit, the second local oscillator unit 1A and the first frequency mixing unit 19 of the second Two input terminals are connected, and the output terminal of the second frequency mixing unit 19 is connected with the input terminal of the second intermediate placement unit 17, and the output terminal of the second intermediate placement unit 17 is connected with the input of the demodulation unit 1B. The output terminal of the demodulation unit 1B is connected with the double-T filter unit 18, and the output terminal of the double-T filter unit 18 is connected with the amplification unit 1C.

According to the wireless telephone adapter provided by the utility model, it is characterized in that each of the FM transmitting parts 2 and 2' includes: a high-frequency amplification unit 21, an excitation unit 22, a buffer unit 23, a modulation unit 24, a low-frequency Put unit 25, the output end of described low put unit 25 is connected with described modulation unit 24, the output end of described modulation unit 24 is connected with described buffer unit 23, the output end of described buffer unit 23 is connected with described excitation unit 22 is connected to the input end, and the output end of the excitation unit 22 is connected to the input end of the high frequency amplifying unit 21. The output end of the high frequency amplifying unit 21 is connected to the antenna unit 6 .

According to the wireless telephone adapter provided by the utility model, it is characterized in that each of the pilot frequency oscillating units 3 and 3' comprises: a ringing control unit 31, a ringing frequency unit 32, a ringing amplification unit 33, Loudspeaker 34, the output end of described ringing control unit 31 is connected to the input end of described ringing frequency unit 32, the output end of described ringing frequency unit 32 is connected in the input end of ringing amplifying unit 33, and the The output end of the bell amplifier unit 33 is connected to the ring speaker 34 .

According to the wireless telephone adapter provided by the utility model, it is characterized in that each of the pilot decoding units 4 and 4' includes: a language decoding unit 41, a DC pulse generating unit 42, and the language decoding unit The input terminal of 41 is connected with the output terminal of the demodulation unit 1B in the FM receiving part 1, the output terminal of the language decoding unit 41 is connected with the input terminal of the DC pulse generating unit 42, and the DC pulse generates The output of the unit 42 is connected to the interface unit 5 .

According to the wireless telephone adapter provided by the utility model, it is characterized in that each of the interface units 5 and 5' includes: an emitter follower 51 and an interface circuit 52, and the input terminal of the emitter follower 51 It is connected with an output end of the amplifying unit 1C in the FM receiving unit 1, the output end of the emitter follower 51 is connected with the input end of the interface circuit 52, and the input end of the interface circuit 52 is also connected with the DC pulse The output end of the generating unit 42 is connected, the output end of the interface circuit 52 is connected with the input end of the low-amplification unit 25 in the FM transmitting part 2 or 2′, and the output end of the interface circuit 52 is also connected with the phone Line input connection terminal 7 or telephone input socket 8 connection.

According to the wireless telephone adapter provided by the utility model, it is characterized in that the radio frequencies of the FM receiving unit 1 and the FM transmitting part 2' are the same, and the FM receiving unit 1' and the FM transmitting part 2 RF frequencies are the same.

When the wireless telephone adapter of the utility model is in use, after the main unit is connected to the local telephone network, one or more auxiliary units can be connected with the same number of ordinary telephone sets, and the auxiliary units and the connected The telephone set is placed within a radius of 30 meters from the main unit. When working, the main unit transmits the ringing signal and voice signal from the local telephone network to the auxiliary unit through the RF FM carrier, and receives the dial signal and voice signal sent by the auxiliary unit. The ordinary telephone set realizes the function of the cordless telephone. When using multiple auxiliary machines and mobile phones, it is possible to use one telephone line for multiple users. On the other hand, the utility model can cooperate with ordinary telephones of any gear or style, and the wireless telephone transponder of the utility model has a simple structure and low cost.

Embodiments of the utility model are further described in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of wireless telephone adapter of the present utility model;

Fig. 2 is the block structural diagram of the host computer in the wireless telephone adapter of the present utility model;

Fig. 3 is the block diagram of the auxiliary machine in the wireless telephone adapter of the present utility model;

Fig. 4 is the fine block diagram of the structure of the host computer in the wireless telephone adapter of the present invention;

Fig. 5 is the schematic circuit diagram of the host computer in the wireless telephone adapter of the present invention;

Fig. 6 is a schematic circuit diagram of the auxiliary machine in the wireless telephone adapter of the present invention.

As shown in Figure 1, the wireless telephone adapter of the present utility model is made up of two parts of a fixed machine 100 (main machine) and one or more mobile auxiliary machines (200,300,400). Each auxiliary machine is connected with an ordinary telephone set 201, 301, 401 respectively. Both the main machine and the auxiliary machine are provided with antennas, the main machine has a terminal connected to a telephone line, and the auxiliary machine has a terminal connected to an ordinary telephone set. When in use, connect the line terminal of the main unit to the local telephone network, and connect the ordinary telephone to the telephone terminal of the auxiliary unit. The main unit is responsible for the relay and forwarding task, which is used to transmit the ringing signal and voice signal from the local telephone network through the wireless carrier Transmit to the mobile phone, and receive the dial signal and voice signal sent by the ordinary telephone through the auxiliary machine. Because there is no connection line between the auxiliary machine and the main machine, it can communicate with other telephone users through the main machine and the local telephone network within a certain range.

Fig. 2 provides the composition structure of the mainframe in the wireless telephone adapter of the present utility model, from which it can be seen that it includes an FM receiving unit 1, an FM transmitting part 2, a pilot frequency oscillation unit 3, a pilot frequency decoding unit 4 and a telephone interface circuit unit 5 , an antenna unit 6 , and a telephone line input connection terminal 7 .

Fig. 3 provides the composition structure of the auxiliary machine in the wireless telephone adapter of the present utility model, and the difference of its structural composition with the main frame is that the interface unit 7 of the former is connected with the telephone line terminal 7, and the interface unit 7 of the latter is connected with the telephone set Terminal 8 connection.

FM receiving unit 1, FM transmitting unit 2, pilot frequency oscillation unit 3, pilot frequency decoding unit 4 and telephone interface circuit unit 5 in Fig. 2 and Fig. 3 are briefly described as follows: 1. FM receiving unit 1, FM transmitting part 2

The wireless telephone transponder of the utility model adopts the frequency modulation duplex working mode, and the transmission of all signals between the mobile phone and the host computer is realized through the frequency modulation receiving unit 1 and the frequency modulation transmitting unit 2 . The frequencies of the receiver and transmitter correspond to each other. 2. Pilot oscillation unit 3 and pilot decoding unit 4

Both the main unit and the auxiliary unit of the wireless telephone transponder of the utility model are provided with a pilot frequency oscillation unit 3 and a pilot frequency decoding unit 4 . When the mobile phone is working, the pilot signal is modulated with the voice signal and sent out by the transmitter. The host recognizes them through the corresponding pilot decoder. Only after receiving the pilot signal, the host computer enters the use state, and at the same time, it is used as a dial signal to dial the local telephone network through the relay. The pilot signal of the host is used as the ringing signal of the mobile phone. 3. Interface unit 5

The function of the telephone line interface unit in the main frame of the wireless telephone transponder of the present utility model is: send the mobile phone voice signal and the dial signal received by the main frame to the local telephone network, and send the voice signal (comprising dial tone, ringback) on the local telephone network tone, busy tone) and local ringing signals are transmitted from the host. The function of the interface circuit of the mobile phone is to feed power to the attached telephone through the interface circuit, transmit the voice signal of the telephone to the host through the transmitting circuit, and convert the dial pulse signal of the telephone into a pilot oscillation signal.

In the circuit of the host part shown in Figure 5, L2, Q1, Q2, Q3, L5, L6, L4, X1, X2, FL1, FL2, IC1, etc. constitute the FM receiving unit 1, R4, D18, L10, L11 . Unit 4, T1, T2, L8, L9, Z1 and Q4 constitute the telephone interface circuit unit 5.

The working principle is briefly described as follows: the main frame is connected to the local telephone network during the circuit work of the wireless telephone transponder of the utility model, and the mobile phone is connected to the common standard push-button dual-frequency telephone. 1. Outgoing call from mobile phone

When the telephone is off-hook (or pulse dialing), it is equivalent to connecting a resistance load to both ends of the telephone connection, so there is a DC voltage drop on L8 and L9, which reduces the voltage on R75, and the voltage on L324 If the voltage of pin 2 is lower than that of pin 3, the voltage of pin 1 becomes higher, that is, the off-hook detection circuit detects the off-hook signal. Then the pilot frequency generation circuit works to generate a pilot frequency signal, which is transmitted by the transmitter. After the host receives the pilot signal, the voice decoding circuit detects the pilot signal, then the transistor Q5 is turned on, the relay Z1 is closed, and the local telephone network is connected. 2. Local calls

When the local call comes in, after the ringing signal is blocked by C41 and R46, the photoelectric coupler is turned on, the pilot generator works, and the pilot signal is sent out through the transmitter. After the mobile phone receives the pilot signal, after the pilot signal is detected and amplified by the pilot detection circuit, the speaker is driven by Q19 to emit a ringing tone. 3. Use:

When in use, connect the main unit to the telephone network on the market, and connect the mobile phone to the phone.

Claims (7)

1. radio telephone adapter, it is characterized in that by one fixedly the secondary machine of transponder main frame and a plurality of mobile transponder form, described fixedly transponder main frame comprises FM reception unit 1, frequency modulation radiating portion 2, pilot tone oscillating unit 3, pilot tone decoding unit 4 and telephone interface circuit unit 5, antenna element 6, telephone line input link 7, the rf inputs of described antenna element 6 and described FM reception unit 1, the radio-frequency (RF) output end of described frequency modulation transmitter unit 2 connects, the output of described FM reception part 1 and described telephone interface circuit unit 5, pilot tone decoding unit 4 connects, an output of described pilot tone decoding unit 4 is connected with described telephone interface circuit unit 5, described pilot tone oscillating unit 4 is connected with described telephone interface circuit unit 5, an output of described telephone interface circuit unit 7 is connected with another input of described rf transmitter unit 2, the output of described telephone interface circuit unit 5, an input of described pilot tone oscillating unit 3 is connected with described telephone line input link 7, in the secondary machine of described a plurality of mobile transponder each comprises FM reception unit 1 ', frequency modulation radiating portion 2 ', pilot tone oscillating unit 3 ', pilot tone decoding unit 4 ' and interface unit 5 ', antenna element 6 ', phone input socket 8, the rf inputs of described antenna element 6 ' and described FM reception unit 1 ', the radio-frequency (RF) output end of described frequency modulation transmitter unit 2 ' connects, the output of described FM reception part 1 ' and described telephone interface circuit unit 5 ', pilot tone decoding unit 4 ' connects, an output of described pilot tone decoding unit 4 ' is connected with described interface unit 5 ', described pilot tone oscillating unit 4 ' is connected with described interface unit 5 ', an output of described interface unit 5 ' is connected the output of described interface unit 5 ' with another input of described rf transmitter unit 2 ', an input of described pilot tone oscillating unit 4 ' is connected with described telephone socket 8.

2. radio telephone adapter according to claim 1, it is characterized in that, in the described FM reception part 1 and 1 ' each comprises input circuit unit 11, the frequency-selecting height is put unit 12, the first mixing unit 13, the first local oscillator unit 14, put unit 15 in first, pottery crystal oscillator unit 16, put unit 17 in second, double-t filter unit 18, the second mixing unit 19, the second local oscillator unit 1A, demodulating unit 1B, amplifying unit 1C, described input circuit unit 11 is connected described antenna element 6 and described frequency-selecting height is put between the unit 12, described frequency-selecting height is put unit 12 and is connected between described input circuit unit 11 and described first converter unit 13, the described first local oscillator unit 14 is connected with another input of described first converter unit 13, putting unit 15 in the output of the described first mixing unit 13 and described first is connected, described ceramic crystal oscillator unit 16 is connected to be put in described first between unit 15 and the described second mixing first input end, the described second local oscillator unit 1A is connected with second input of the described second mixing unit 19, the input of putting unit 17 in the output of the described second mixing unit 19 and described second is connected, the output of putting unit 17 in described second is connected with the input of described demodulating unit 1B, the output of described demodulating unit 1B is connected with described double-t filter unit 18, and the output of described double-t filter unit 18 is connected with described amplifying unit 1C.

3. radio telephone adapter according to claim 1, it is characterized in that, in the described frequency modulation radiating portion 2 and 2 ' each comprises: high frequency amplifying unit 21, exciting unit 22, buffer cell 23, modulating unit 24, the low unit 25 of putting, the described low output of putting unit 25 is connected with described modulating unit 24, the output of described modulating unit 24 is connected with described buffer cell 23, the output of described buffer cell 23 is connected with the input of described exciting unit 22, and the output of described exciting unit 22 is connected described high frequency amplifying unit 21 with the input of described high frequency amplifying unit 21 output is connected to described antenna element 6.

4. radio telephone adapter according to claim 1, it is characterized in that, in the described pilot tone oscillating unit 3 and 3 ' each comprises: ring control unit 31, ringing frequency unit 32, ring amplifying unit 33, loud speaker 34, the output of described ring control unit 31 is connected to the input of described ringing frequency unit 32, the output of described ringing frequency unit 32 is connected the input of ring amplifying unit 33, and the output of described ring amplifying unit 33 is connected to described ringing loudspeaker 34.

5. radio telephone adapter according to claim 1, it is characterized in that, in the described pilot tone decoding unit 4 and 4 ' each comprises: linguistic decoding unit 41, DC pulse generation unit 42, the output of demodulating unit 1B in the input of described linguistic decoding unit 41 and the described FM reception part 1 is connected, the output of described linguistic decoding unit 41 is connected with the defeated end of described DC pulse generation unit 42, and the output of described DC pulse generation unit 42 is connected with described interface unit 5.

6. radio telephone adapter according to claim 1, it is characterized in that, in the described interface unit 5 and 5 ' each comprises: emitter follower 51 and interface circuit 52, the input of described emitter follower 51 is connected with the output of amplifying unit 1C in the described FM reception unit 1, the output of described emitter follower 51 is connected with the input of described interface circuit 52, the input of described interface circuit 52 also is connected with the output of DC pulse generation unit 42, the output of described interface circuit 52 is connected with the low input of putting unit 25 in described frequency modulation radiating portion 2 or 2 ', and the output of described interface circuit 52 also is connected with described telephone line input splicing ear 7 or phone input socket 8.

7. radio telephone adapter according to claim 1, it is characterized in that, the rf frequency of described FM reception unit 1 and described frequency modulation radiating portion 2 ' is the same, and the rf frequency of described FM reception unit 1 ' and described frequency modulation radiating portion 2 is the same.

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