CN1030506A - Can make the telephone transmitter-receiver of operating handset with wireless system - Google Patents

Abstract

Except that microphone and loud speaker, mobile phone also is equipped with a radio transmitter and a radio receiver; Between mobile phone and telephone body, dispose radio device main body with a signal sending circuit, a radio transmitter and a radio receiver; When mobile phone and radio device main body interconnect with telephone cord, sound signal is just transmitted by the signal transmssion line between mobile phone and the telephone body, and when the cord that interconnects usefulness between mobile phone and the radio device main body was disengaged, mobile phone and telephone set just interconnected by the radio system that the radio transmitter and the radio receiver of mobile phone and telephone body are formed.

Description

Can make the telephone transmitter-receiver of operating handset with wireless system

The present invention relates to a kind of telephone transmitter-receiver that can make the operating handset of mentioning from telephone body with wireless system.

In ordinary telephone set, telephone body and mobile phone are to interconnect by cord, and sound signal promptly sends and receives by this cord.Therefore the user think that one side is walked about one side must a hand-held mobile phone when making a phone call, another hand telephone set main body.

When the user had been with telephone set to walk about as described above, because both hands are not free, and scope of activities was restricted, thereby some inconvenience.

Can be when in view of this, primary and foremost purpose of the present invention provides a kind of the use the telephone transmitter-receiver of cord removal.

For reaching above-mentioned and other purpose, the invention provides the telephone transmitter-receiver that comprises following each several part: a mobile phone, have a loud speaker, a microphone, a radio transmitter and a radio receiver, in order to send or to receive the sound signal ripple; One radio device main body, has a signal transmission line, one radio transmitter and a radio receiver, in order between telephone body and described mobile phone, to send and received signal, thereby when described mobile phone and described radio device main body interconnect with cord, the transmission of sound signal and reception are just undertaken by the signal transmission network in the described radio device main body, and when interconnecting cord between described mobile phone and the described radio device main body by removal or when separating, described mobile phone and described telephone body just are connected with each other with wireless system by the described radio transmitter and the described radio receiver of described mobile phone and described radio device main body.

When mobile phone and radio device are interconnected with one another by cord, sound signal between mobile phone and telephone body transmission and receive that system undertakies by the signal transmission network in cord and the radio device main body.Be that telephone transmitter-receiver is worked by the similar mode of ordinary telephone set in fact.But when removing the cord that interconnects between mobile phone and the radio device main body, the radio transmitter and the receiver of mobile phone and radio device main body are devoted oneself to work, thereby mobile phone and telephone body are connected with each other with wireless system.So the user just can freely use mobile phone in the working range of radio transmitter and receiver.

As mentioned above, according to the present invention, radio device main body system is configured between mobile phone and the telephone body, and in the radio device or even the mobile phone of packing into, thereby mobile phone can extract use from telephone body.Like this, phone uses just very convenient.In addition, when mobile phone was received telephone body by cord, it can use by the similar mode of regular handset telephone set in fact and not go out any problem.

Fig. 1 is the structure block diagram of the wire telephone of the present invention with radio communication function.

Fig. 2 is the appearance perspective illustration of wire telephone shown in Figure 1.

Fig. 3 is a most preferred embodiment of the present invention, is the detailed circuit diagram of radio device main body shown in Figure 1.

Fig. 4 is the detailed circuit diagram of the mobile phone shown in Fig. 1.

Fig. 5 is the detailed circuit diagram of another most preferred embodiment of the present invention.

Fig. 1 is that this telephone set of schematic diagram of the wire telephone total of the present invention with radio communication function comprises telephone body A, radio device main body B and mobile phone C.The structure of telephone body A and working condition be similar with ordinary telephone set substantially, and each radio device main body B and mobile phone C have a radio transmitter TX and a radio receiver RX.Radio device main body B and mobile phone C are connected with each other with wireless mode.Radio device main body B has a normal signal transmission network, and the same with the situation of ordinary telephone set, can be directly coupled to mobile phone C.

In other words, telephone body A and mobile phone C can interconnect one in the mode and connected mode interconnects by two kinds, when mobile phone C and radio device main body B interconnect by cord, radio device main body B system is transferred to idle mode, thereby mobile phone just is directly connected on the telephone body A.On the other hand, when cutting off between mobile phone C and the radio device main body B by the interconnecting of cord, they just are coupled each other with wireless system.

Fig. 2 is the appearance of telephone set of the present invention, and usually, telephone body A is the main body of ordinary telephone set.Each has radio transmitter and radio receiver is exclusive parts of the present invention to be configured in radio device main body B below the telephone body A and mobile phone C.

Fig. 3 is the circuit diagram of the radio device main body B shown in Fig. 1, and Fig. 4 then is the circuit diagram of mobile phone C.

Following priority is introduced the working method of these circuit with reference to Fig. 3 and Fig. 4.

The circuit of radio device main body B shown in Fig. 3 comprises that transmitter TX, receiver RX, control transmitter the operation of TX and receiver RX and comprise the control circuit of transistor Q1～Q3 and the sound signal circuit that the signal between an exchange transmitter TX and the receiver RX is used.Above-mentioned all circuit, transmitter and receiver are all started by the electric energy of internal electric source E supply.

Control circuit starts or stops transmitter TX and receiver RX according to the reference potential on the right microphone terminal MIC3 of two input and output terminals among the radio device main body B.That is, the current potential S8 on the microphone terminal MIC3 utilizes following situation to obtain: when extracting the cord (Fig. 4) that connects between radio device main body B and the mobile phone C out, current potential S8 rises to floating-potential from zero potential.In the case, radio device main body B and mobile phone C system interconnect with wireless system, thereby mobile phone C can be connected on the telephone line.

Because exist the dual mode that cord connects and do not connect, and the dual mode that under the mode of connecting, also exists mobile phone C to mention and reset from telephone body A respectively, so control circuit always has three kinds of working methods.

The cord system of hypothesis mobile phone C receives on the radio device main body B now, then because microphone terminal MIC3 passes through the microphone ground connection shown in Fig. 4, thereby current potential S8 vanishing current potential or L on the microphone terminal MIC3.

In this case when mobile phone C rests on the telephone body A, owing to the effect of the hook switch among the telephone body A, microphone circuit " obstructed ".Therefore, microphone does not send voltage signal according to sound wave, thereby the current potential S8 on the microphone terminal MIC3 remains on " L " state.Equally, the current potential S1 of another microphone terminal MIC1 remains on " L " state.

Current potential S1 system is added to by the voltage divider of being made up of resistor R 1 and R2 on the base stage of transistor Q1.The resistor R 2 of capacitor Cl and voltage divider is connected in parallel.Because the base stage of transistor Q1 is in " L " state, collector potential S2 rises to " H " state, and carries out paraphase by phase inverter INV1.Draw the emitter that the output potential S3 that is in " L " state is added to transistor Q2 from phase inverter INV1, be added to the base stage of transistor Q2, and be added to the ground connection base of microphone terminal MIC3 by resistor 5 by resistor 4.Therefore, transistor Q2 still is in " ending " state, thereby the current potential S4 on the grounded collector drops to " L " state by resistor R 6.Current potential S4 is added on the phase inverter INV2, is become to be in the signal of " H " state by paraphase, and this signal is added to again on the input terminal of NOT-AND gate NA ND.Be added to from the output S3 that INV1 draws on another input terminal of NOT-AND gate.Therefore, the output S6 that draws from NAND circuit NAND enters " H " state, and is added to the base stage of transistor Q3 by resistor 7.So, transistor Q3 conducting, its output S7 enters " L " state, thereby transmitter TX and receiver RX still are in and do not work or currentless state.

Working method when the mobile phone of having a talk again below is raised.In this case, hook switch (not shown) among the telephone body A is connected, so the capacitor-microphone voltage of direct current 2 voltage magnitudes occurs on the microphone terminal MIC1 that is connected to microphone amplifier AMPM input terminal by capacitor CM by resistor R M.This voltage is added on the microphone terminal MIC3 as voltage S8 by diode D1, and the current potential S1 that is in " H " state simultaneously is added on the base stage of transistor Q1.At this moment the output S2 that draws from transistor Q1 drops to " L " state, thereby makes the output S3 of phase inverter INV1 be raised to " H " state, and is added on the emitter of transistor Q2.The dividing potential drop of signal S3 and signal S8 is added on the base stage of transistor Q2.Though, as mentioned above, signal S3 still is in " H " state, but because microphone (as shown in Figure 4) is to connect as load, thereby S8 still is in " L " state like this, have bias voltage to be added on the base stage of transistor Q2, thereby make transistor Q2 conducting, thereby its collector electrode output S4 becomes height.The output S5 of phase inverter INV2 reduces to " L " state, and is added to " with non-" on the gate circuit.Because signal S3 (being in " H " level) and signal S5 (being in " L " state) are to be added on the NOT-AND gate, thereby it exports S6 and rises to " H " state, and is added on the transistor Q3.Transistor Q3 still is in " ending " state, so transmitter TX and receiver RX still are in and do not work or currentless state.

When mentioning mobile phone C, be added on the microphone terminal MIC1 of telephone body A side by diode D1 from microphone terminal MIC3 from the sound signal of mobile phone C.On the loudspeaker terminal SP3 and SP4 that the sound signal of drawing from the lead-out terminal of the speaker amplifier AMPS of telephone body A is added to mobile phone C side from loudspeaker terminal SP1 and SP2 transformer T and the capacitor CS by parallel connection.Therefore at this moment radio device main body B plays relay.

Above-mentioned two to implement be that transmitter and receiver all still is in and does not work or currentless state.The transmitter and receiver of having a talk again below all is transferred to the situation of work or excitation.

In the case, the microphone that should be interconnected between microphone terminal MIC3 and the MIC4 is in not connection status.That is, mobile phone C is raised, and the cord that connects between mobile phone C and the radio device main body B is in disarm state.At this moment, signal S1-S3 remains unchanged, and signal S8 rises to " H " state.Therefore, output S4 from transistor Q2 is switched to " L " state, output S5 from phase inverter INV2 rises to " H " state, thereby the output S6 of NOT-AND gate reduces to " L " state, thereby transistor Q3 conducting, output " H " status signal S7 simultaneously.At this moment, transmitter TX and transmitter RX connect.

Now signal be on the one hand transmitter TX and the transmitter and receiver of the mobile phone C shown in receiver RX and Fig. 4 between carry out.Introduce mobile phone C below in detail.

Transmitter TX will modulate by the sound signal that the voltage divider of being made up of resistor R 8 and R9 transmits from telephone line, and from its antenna transmission.Receiver RX is added to the sound signal of being received on the capacitor CM by capacitor C3, resistor R 10 and microphone terminal MIC1, is added to then on the telephone body A.

Fig. 4 is the structure chart of mobile phone C together with capacitor-type microphone MIC and loud speaker SP.The sound signal that microphone MIC receives is sent on the radio device main body B by cord or by wireless system, and the sound signal from radio device main body B is received by cord or by wireless system simultaneously.

In other words, when mobile phone C and radio device main body B system is interconnected with one another by the cord (not shown), promptly work as terminal SP3 and the SP4 that terminal SP5 and SP6 receive radio device main body B, when simultaneously terminal MIC5 and MIC6 received the terminal MIC3 of radio device main body B and MIC4, telephone transmitter-receiver of the present invention was worked by the same mode of ordinary telephone set in fact.But when cord was disengaged, signal was to exchange between transmitter TX and receiver RX with wireless system.

At this moment, they interconnect by cord, the direct voltage of 5 voltage magnitudes is added to terminal SP5 from telephone body A by radio device main body B, be interconnected on the transistor Q21 of Darlington mode and the Q22 by resistor 22 and be not biased voltage, thereby these transistors still are in off position.Therefore power supply is not added on transmitter TX and the receiver RX, thereby they still are in and disconnect state.Because transistor Q21 is in cut-off state, transistor Q24 also ends, and the institute's active circuit shown in Fig. 4 still is in off position, thereby the energy of battery E does not consume fully.Output audio signal from microphone MIC is added on the radio device main body B by terminal MIC5 and MIC6, be added to again on the telephone body A, pass through radio device main body B and terminal SP5 and SP6 from the sound signal of telephone body A simultaneously and transmit on the loud speaker SP.

When cord was disengaged, terminal SP5 dropped to earth potential, thereby the base stage that makes the Darlington that transistor Q21 and Q22 connect into is by diode D23 and D22 and resistor 21 ground connection.At this moment, transistor Q21 and Q23 conducting are so when transistor Q24 conducting, power supply is fed on transmitter TX and the receiver RX.At this moment, be added on the transmitter TX by the voltage divider of being made up of resistor R 27 and R28 from the output audio signal of microphone MIC, transmitter TX goes out the sound signal of being received again from its antenna transmission.The received signal of receiver RX is added on the loud speaker SP by capacitor C22 after amplifying by being added to by resistor R 30 and 31 voltage dividers of being formed and capacitor 23 on the base stage by resistor R 23 biased transistor Q23 again.Diode D24 and resistor R 29, R24 and R25 are the element that constitutes DC line or circuit.

Fig. 5 is the schematic diagram of another embodiment of the present invention, comprising telephone body A, radio device unit B and mobile phone C, and three box indicatings that they all surround with chain-dotted line.Mobile phone C and telephone body A system is interconnected with one another by the telephone line of being made up of following each several part: receiving lines 1 and 1 ', transmitting line 2 and 2 ' with control circuit 3 and 3 '.Receiving lines 1, transmitting line 2 and control circuit 3 by have six terminals with the connector 7 of the switch that connects or cut off telephone line be connected to receiving lines 1 ' transmitting line 2 ' and control circuit 3 '.

Receiving lines 1 and 1 ' and transmitting line 2 and 2 ' be connected on the relay tip, and telephone line is set up one according to the switching of relay tip and is extended to the through type transmission line of telephone body A or set up transmission circuit between transmitter and receiver from mobile phone C.Relay is to switch on or cut off the power supply according to the situation of control line 3; Whether 3 of control lines connect and change with being plugged on connector 7 between mobile phone C and the telephone body A.

In more detail, when connector connects, relay 8 and 4 energisings, go mobile phone C loud speaker SP sound signal and send by telephone circuit from the sound signal of microphone MIC contact from relay 8 and 4.

On the other hand, when connector did not connect, relay 8 and 4 outages were so their contact reverses.Therefore, go the sound signal of loud speaker SP to be sent to receiver 9, pass through the contact transmission transmitter 10 of relay simultaneously from the sound signal of microphone MIC by relay tip.Signal transmits between as the opposing party as a side and transmitter 5 and receiver 6 at transmitter 10 and receiver 9, more than all transmitter and receivers also all switch on or off by relay tip.All transmitter and receivers need be by power supply (not shown) power supply, and switching on or off of this power supply is to be undertaken by the relay 8 that is connected in series with power supply and 4 normally closed contact.

Said above,, still can use telephone set by wired or wireless mode even connector does not connect, even and phone also can freely carry out switching between wired system and the wireless system in use.

In the above-described embodiments, the electromagnetic relay system uses as relay 8 and 4, but self-evident, electronic relay, and promptly so-called state type relay can use too.

Telephone transmitter-receiver of the present invention simply mode is used for ordinary telephone set, also can be used as the radio telephone use although working range is limited, and it is more simple in structure than common radio phone, easy operating.

Claims (6)

1. an energy is characterized in that with the telephone transmitter-receiver that wireless system is devoted oneself to work mobile phone, and this telephone transmitter-receiver comprises:

One mobile phone has a loud speaker, a microphone, a radio transmitter and a radio receiver, and can send or receive sound signal or sound signal ripple; With

One radio device main body has a signal circuit, a radio transmitter and a radio receiver, and carries out the transmission between telephone body and the described mobile phone;

Therefore, when described mobile phone is received described radio device main body by telephone cord, sound signal is just transmitted between described mobile phone and described telephone body by described signal circuit, and when removing the cord that interconnects between described mobile phone and the described radio device main body, described mobile phone and described telephone body just are coupled each other by the radio system that the described radio transmission and the described radio receiver of described mobile phone and described telephone body are formed.

2. have transmitter and receiver thereby between described telephone body and described mobile phone, just set up separately the time from described phone body the wire telephone that sound signal transmits when described mobile phone at the sort of telephone body and mobile phone with wireless system, a kind of wire telephone with radio telephone function, it is characterized in that being provided with a testing circuit, in order to detect when described telephone body is raised at described mobile phone toward the situation that is contained in the microphone supply predetermined voltage the described mobile phone, thereby when described testing circuit output one detected output, the described transmitter and the described receiver that are contained in the described telephone set were transferred to operating state.

3. wire telephone as claimed in claim 2 is characterized in that, described microphone is a capacitor-type microphone.

4. a radiophone is characterized in that, this radiophone comprises:

One telephone circuit has receiving lines, transmitting line and control circuit;

One radio device main body, have a relay, a transmitter and a receiver, this relay has some contacts of being plugged in the described receiving lines, be plugged on the some contacts in the described transmitting line and be connected to a coil of described control circuit, and this transmitter and receiver is then controlled by this sample loading mode: the switching manipulation according to described relay is switched on or switched off;

One mobile phone, have one in order to receive the loud speaker of sound signal from described receiving lines, one is sent to the microphone of the sound signal of described circuit in order to generation, one has some contacts of receiving described receiving lines by connector, some contacts and of receiving described transmitting line by described connector are received the relay of the coil of described control circuit, with a receiver and a transmitter, this transmitter system controls to such an extent that thereby it can be switched on or switched off according to the switching manipulation of the described relay switching manipulation according to each contact, described loud speaker and described microphone system receive on described circuit or described transmitter and the described receiver, described receiver is then received on the described telephone body by described telephone circuit, thereby when described mobile phone is received described radio device main body by described connector, described loud speaker and described microphone are received described telephone circuit, but when described connector cuts off interconnecting between described mobile phone and the described radio device main body, described relay in described mobile phone and the described radio device main body is switched, the described transmitter of described mobile phone is switched on, and described loud speaker and described microphone are received respectively on described transmitter and the described receiver, connect described transmitter and described receiver in the described wireless device main body simultaneously.

5. radiophone as claimed in claim 4 is characterized in that, described all relays are made up of electromagnetic relay.

6. radiophone as claimed in claim 4 is characterized in that, described all relays are made up of electronic relay.

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