CN2627759Y - Computer sound card based telephone message alternating acknowledge device - Google Patents

Abstract

The utility model relates to a telephone message alternating acknowledge device based on a computer sound card, which is composed of a computer, a sound card, a computer interface and a telephone processing module, wherein the telephone processing module finishes detection of pseudo off-hook on-hook actions, dialing tone, busy tone, ring back tone and called subscriber off-hook on-hook state, and the telephone processing module is connected with the computer interface to carry out communication coordination. The computer plays and records voice through the sound card. The device can run an application program to start an active interaction process with a user and also start a passive interaction process by a far-end ordinary telephone subscriber. The telephone tone is processed through the computer sound card and the interface connecting with the telephone processing module, which not only makes full use of the existing computer resource of people to increase the capacity of voice response obviously, but also has a convenient and abundant computer voice processing control method to satisfy requirements of different occasions.

Description

A kind of telephone message alternate acknowledge device based on computer sound card

Affiliated technical field

The utility model relates to a kind ofly can carry out the alternate acknowledge device with ordinary telephone subscriber, refers in particular to that a kind of pronunciation is recorded based on computer sound card carries out active and passive telephone message alternate acknowledge device with ordinary telephone subscriber.

Background technology

At present, known automatic-answering back device leave word call machine, its voice answer-back part is play and sound recording with solid-state speech processor, can satisfy general telephone message, recording request, but because capacity limit can't be carried out jumbo voice suggestion, jumbo voice recording, and the restriction of operational means, be difficult to carry out the layout of sound materials, therefore, be difficult to carry out the alternate acknowledge service situation of a large amount of voice suggestions of needs as collection, passive reception a large amount of domestic consumers situation report of a large amount of situation data initiatively and the inquiry of giving information etc.; Use the device in the straighforward operation distant place of plain old telephone at present, because the restriction of voice answer-back capacity is difficult to the detailed state of describing controlled device all sidedly, operation easily makes the mistake.At present, also do not have to utilize the computer that generally uses and sound card and single-chip microcomputer call processing module to combine, carry out big capacity interactive voice answering device with ordinary telephone subscriber.

Summary of the invention

In order to overcome the deficiency of existing automatic-answering back device leave word call machine voice answer-back, make full use of the existing computer resource of user at hand, the utility model provides a kind of big capacity interactive telephone phonetic answering device based on computer and sound card, this device utilizes existing computer in user's hand, additional simple telephony interface device, just can carry out big capacity interactive telephone phonetic replys, record, thereby finish unmanned that participate in and initiatively alternate acknowledge and the passive alternate acknowledge work of distant place ordinary telephone subscriber, the size of its speech volume, only depend on the restriction of hard disc of computer size, and the hard disc of computer capacity is increasing at a high speed at present, surpassed 100GB, the voice capacity of handling in common PCM mode is an example: establish the voice of recording and adopt PCM 8kHz, 8, the monophony format analysis processing, its data flow is approximately 7KB/ second, as with the hard disk of 60GB as the voice data process disk, about 2300 hours of the time then can holding audio file, the time of storing call user speech is 6 hours by every day, the capacity in 1 year head and shoulders above, the capacity of storaged voice also can double if the ADPCM form is used in consideration, serve with respect to voice answer-back, have inexhaustible memory space, can be the user increases the jumbo data of replying; Simultaneously because processed voice is very convenient on computers, can be various voice data, by filing, according to state of user on the telephone line, tissue carries out voice answer-back, broadcast, gathers the big detailed voice suggestion of capacity thereby can be adapted to a large amount of situations collections easily, relevant voice data check is provided, accepts functions such as incoming call control operation.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of telephone message alternate acknowledge device based on computer sound card, comprise computer, sound card, computer interface and call processing module are formed, call processing module is by single-chip microcomputer, bell flowing detecting circuit, the audio signal testing circuit, dislodging machine control circuit, the input and output isolated amplifier, DTMF signaling circuit, DTMF decoding circuit and computer interface circuit are formed, it is characterized in that: single-chip microcomputer respectively with bell flowing detecting circuit, the audio signal testing circuit, the DTMF number of sending out, the DTMF decoding circuit links to each other, and finishes the dialing sound, busy tone, ring-back tone and the called party machine state-detection of seting out; Single-chip microcomputer links to each other with computer interface by the computer interface circuit and communicates coordination; The LINE IN of computer sound card or MIC end, LINE OUT end are connected with input, the output isolated amplifier of call processing module respectively, carry out the broadcast of voice and record; Real-time Monitoring Line state of single-chip microcomputer and reception double-tone be decoded data frequently, and detecting and decoded result is sent to computer interface by the computer interface circuit, receive by computer, the result that computer detects according to single-chip microcomputer carries out speech play by sound card and records, and a broadcast result sends single-chip microcomputer to by computer interface, coordination single-chip microcomputer input and on-hook action; This device can be by active of computer run application program launching and user interaction process, send starting command to single-chip microcomputer, the indication single-chip microcomputer begins to carry out once initiatively reciprocal process, the subscriber directory number that stores in the database that the single-chip microcomputer receiving computer extracts, carry out off-hook and dialing processing, start once active alternate acknowledge process with the far-end ordinary telephone subscriber; Also can start once passive reciprocal process by the far-end ordinary telephone subscriber, send the telephone number of this device the telephone subscriber, after single-chip microcomputer receives bell signal, begin to start by the once passive reciprocal process of computer interface notice computer, after computer applied algorithm is received enabling signal, can start once passive reciprocal process.

Above-mentioned call processing module can be loaded in the common telephone set, on the casing of telephone set, leave LINEIN, LINE OUT socket, and be used to connect computer interface and dc power plug seat, LINE IN, LINEOUT socket link to each other with the input and output isolated amplifier of call processing module, connector assembly links to each other with computer interface circuit and power supply in the call processing module, and call processing module and phone are connected on the telephone wire; Connector assembly is connected on computer interface and the DC power supply by connecting line, and the LINE IN on the telephone set, LINE OUT socket link to each other with LINE OUT, the LINE IN (or MIC end) of computer sound card by connecting line respectively, with the structure of compact this device.

The beneficial effects of the utility model are, by being connected of use a computer sound card and interface and call processing module, handle call voice, not only can make full use of existing computer resource in people's hand, significantly increase the capacity of voice answer-back, and the computer speech processing controls means that can have convenience, enrich, only need the modification computer applied algorithm promptly to can be abundant voice data is provided with ordinary telephone subscriber alternate acknowledge, satisfy the needs of different occasions, simultaneously, simple in structure, need the cost of increase few.At last, this device can be computer and further carries out call voice Real time identification interaction process hardware platform is provided.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a The general frame of the present utility model.

Fig. 2 is the utility model embodiment input and control section schematic diagram.

Fig. 3 is the utility model embodiment DTMF decoding, send out number and with computer interface part schematic diagram

Embodiment

Fig. 1 is a The general frame of the present utility model.A kind of big capacity interactive telephone phonetic answering device based on computer and sound card, comprise computer, sound card, computer interface and call processing module are formed, call processing module is by single-chip microcomputer, bell flowing detecting circuit, the audio signal testing circuit, dislodging machine control circuit, the input and output isolated amplifier, the DTMF signaling circuit, DTMF decoding circuit and computer interface circuit are formed, single-chip microcomputer respectively with bell flowing detecting circuit, the audio signal testing circuit, the DTMF signaling circuit, the DTMF decoding circuit links to each other, and finishes the dialing sound, busy tone, ring-back tone and the called party machine state-detection of seting out; Single-chip microcomputer links to each other with computer interface by the computer interface circuit and communicates coordination; The LINE IN of computer sound card or MIC end, LINE OUT end are connected with input, the output isolated amplifier of call processing module respectively, carry out the broadcast of voice and record; Real-time Monitoring Line state of single-chip microcomputer and reception double-tone be decoded data frequently, and detecting and decoded result is sent to computer interface by the computer interface circuit, receive by computer, the result that computer detects according to single-chip microcomputer carries out speech play by sound card and records, and a broadcast result sends single-chip microcomputer to by computer interface, coordination single-chip microcomputer input and on-hook action; This device operation computer applied algorithm begins to start once: send starting command to single-chip microcomputer, the indication single-chip microcomputer begins to carry out once initiatively reciprocal process, the subscriber directory number that stores in the database that the single-chip microcomputer receiving computer extracts, carry out off-hook and dialing processing, start once active reciprocal process with the far-end ordinary telephone subscriber, once finish alternately, whether the computer applied algorithm inspection all finishes alternately, do not finish, can follow and carry out next user's processing again.Also can start once passive reciprocal process by the far-end ordinary telephone subscriber, from the remote subscriber start-up course is after the telephone subscriber transfers to the telephone number of this device at telephone wire, after single-chip microcomputer receives bell signal, begin to start by the once passive reciprocal process of computer interface notice computer, after computer applied algorithm is received enabling signal, can start once passive reciprocal process.Initiatively with passive reciprocal process in, computer carries out interactive voice by sound card and telephone subscriber and replys and record.

Below, carry out with a concentrated supply of heating in the city that service quality is followed the tracks of and the heat supply point temperature is collected as example, sketch its active and the passive course of work, the process that data are collected in its active alternate acknowledge is: the operation computer applied algorithm begins to start initiatively reciprocal process, send starting command to single-chip microcomputer, the indication single-chip microcomputer begins to carry out once initiatively reciprocal process, the subscriber directory number that stores in the database that the single-chip microcomputer receiving computer extracts, detect ringing signal, as there is not a ringing-current, when being the passive acknowledges requests of no user, by dislodging machine circuit off-hook, detect audio signal by the audio signal testing circuit, after detecting dialing tone, the telephone number that transmits by computer detects audio signal by the number of taking place frequently of the outside double-tone of DTMF signaling circuit, judge called whether off-hook, as detect busy tone, and then notify computer, computer carries out record, start next mutual, as not being busy tone, then judge whether ring-back tone, in this way ring-back tone, then timing, as surpassing a specified time, then notify computer, computer carries out record, and according to program setting or the dialing of notice single-chip microcomputer on-hook the carrying out next one, or the notice single-chip microcomputer continues to pull out a scheduled time.As no longer being ring-back tone within a certain period of time, single-chip microcomputer is then notified computer, the phone on, after computer is received phone on message, computer is play opening remarks voice document of preprepared by sound card, as " I am a heat supply company; bothered you, and this is heating quality automation services hot lines, could you tell me some problems and suggestion aspect heat supply; if could you OK? catch my word; and interesting the answer, please by 1 key, do not catch please by 2 keys ", on-hook busy-back signal sound is replied and detected to single-chip microcomputer by double-tone decoder reception frequently user's button, immediately send computer testing result, as user's on-hook, computer recording, the communication of next bit is carried out in the Single-chip Controlling on-hook; Press 2 keys as the user, then continued to broadcast opening remarks one time; 1 key in this way, then play " whether you are satisfied with to our heat supply service, feel quite pleased by 1 key, satisfied with 2 keys; as to be satisfied in the main by 3 keys; dissatisfied by 4 keys " and notify single-chip microcomputer to receive user key-press simultaneously, user key-press is by double-tone decode value input frequently, after single-chip microcomputer is received, give computer, Computer Storage can further be play, " can you tell the temperature value that I am present? can be please by 1; can not be by 2 ", if receive that the user presses 1 key, then computer is further pointed out: " temperature value is by 2 transmissions, and first is ten; second is a position; be no more than 10 degree, the first place is 0, asks button now." at last further; user's satisfaction key value is extracted in the computer inspection; send different voice according to user's satisfaction: 3 keys in this way; user's service of being satisfied in the main; " I use X minute time now then to send out voice, your opinions and suggestions of opening entry, you are satisfied in the main to our work, Wish i knew, which place we do not enough, and which place is done relatively goodly, or further improve heat supply work to us and stay valuable advices, as not thinking that message or message finish, and ask on-hook." record; notify single-chip microcomputer to note detecting whether on-hook of user simultaneously; if user's on-hook is notified computer by single-chip microcomputer, computer stops recording, if the user surpasses the scheduled time; do not have on-hook; then computer sends howler tone, " sorry, time is almost up simultaneously the user to be sent out voice, we can think better of your suggestion, goodbye." issue single-chip microcomputer on-hook instruction then after a while, the single-chip microcomputer on-hook then can begin next process of repetition.As above-mentioned user's satisfaction by be 4 keys, the user is dissatisfied to the heat supply service, " sorry, our work is not carried out, and I use X minute time now; your message of opening entry; welcome you that our work is presented one's view and recommendation on improvement, wish that you stay further contact method, and we will in time get in touch with you and handle the problem that you propose; as not thinking message or message end, ask on-hook then to send out voice." record, notify single-chip microcomputer to note detecting whether on-hook of user simultaneously, if user's on-hook is notified computer by single-chip microcomputer, computer stops recording; Do not have on-hook if the user surpasses certain hour, then computer sends howler tone, and " sorry, time is almost up, and we can think better of your suggestion, goodbye simultaneously the user to be sent out voice." issue single-chip microcomputer on-hook instruction, single-chip microcomputer on-hook then after a while.Then can begin next process of repetition.Can send different signal languages at the user of different satisfactions, the variant message time is beneficial to and user communication.

This device is by the remote phone customer call, the course of work that begins to start passive alternate acknowledge process is: the user dials in the telephone number at this device place, single-chip microcomputer detects ringing tone by ring detecting circuit, notify the computer user to insert, control off-hook simultaneously, after computer applied algorithm learns that the user inserts, play opening remarks voice document " you are good; I am that heat supply company automatic complaint and temperature are declared the center; the heat supply numbering # that please import you finishes ", pass through the value that DTMF double-tone frequency decoding circuit receives user key-press, send and computer by single-chip microcomputer, after computer is received numbering, compare, if can find, then further play " your heat supply numbering is "+" XXXX "+" if correct; as then to press # and confirm; re-enter ", repeat several steps and import correct numbering, if the numbering that does not find the user to import up to the user as incorrect, then can point out the user " your numbering of input is incorrect, please re-enter ".Number of times to a certain setting, number still mistake, then can play voice document, " take it easy; slowly think of again ",, number still mistake if the user surpasses certain number of times, can play voice document " sorry; that the heat supply numbering of your input is wrong, wishes to remember that numbering calls us by telephone again, thanks " if the numbering of user's input is correct, but then the play cuing voice document " as want to propose message and suggestion please by 1 key; as want to declare room temperature please by 2 " same, as the user by 1 key, then play " I carry out X minute recording now for you; but as declare the end on-hook, or declare temperature by 2 keys." then stopping recording as the user by 2 keys, the prompting user " please finish by input temp # date # time #, if present time then only needs to press latter two # of temperature value and finishes ".After the correct input of user, computer extracts, by the combination of playing a plurality of voice documents finish following voice suggestion " you declare temperature "+" XX "+" degree "+" date of obtaining temperature is "+" XX "+" time of obtaining temperature is "+" XX "+" if input correctly please finishes by #; if wrong the modification; mismatch temperature is revised # by 1 key+newly be worth key and finished; the date mistake is revised # by 2 keys+newly be worth key and finished; the time wrong 3 keys+newly be worth keys revise # and finish; misclassification 4 keys+newly be worth key is revised # and is finished " can revise repeatedly, XX is the voice of user by computer, data in the telephone key input, the DTMF decoded data that single-chip microcomputer receives from telephone line by the DTMF decoding circuit, be sent to computer, computer storage in advance records ground voice document, " 0 ", " 1 ", " 2 ".。。" 9 ", " pick up " " 20 ", " 30 ", " 40 " etc., computer is got corresponding voice document by the key assignments of user's input and is play, temperature value as user's input is 14 degree, getting voice document when then computer is circulated a notice of " picks up "+" 4 "+" degree ", press close to the common requirement of speaking of people, as correctly, then can point out " if but further do not declare and leave a message then on-hook; message can be by 1 if desired, and declaring temperature can be by 2 " single-chip microcomputer receives user's on-hook or user and further reinforms computer alternately during requirement.Computer can be noted suggestion and the information that the user provides in this process, deposits database in, so that further handle.User's heat supply situation can in time be recognized by heat supply company like this, and the problem that occurs is in time handled, and problem is eliminated in bud, improves service quality.

Do not have the computer support of speech processes instrument and big storage capacity equipment so easily in of this sort comprising when collecting situation, be difficult to finish so mutual in the face of a large amount of ordinary telephone subscribers.

This device also can be used for automatic goods quotation aspect, only need revise computer applied algorithm simply, be the example summary with electronic component inquiry system automatically: computer has Component List and price-list, except some necessary voice documents, also there are voice document " 0 ", " 1 ", " 2 ".。。" 9 ", " picking up " " 20 ", " 30 ", " 40 ".。。" 100 ", " 200 ".。。" 1,000 ", " 2,000 ".。。And " A ", " B " " C ".。。" Z " voice document, after the user pulled out the telephone number of logical this device, computer sent prompt tone, and each selects typing by two buttons will to point out to import the chip model especially, usually telephone set all has a mark on button, 2 (ABC) i.e., 2 keys are again the ABC enter keies, same 3 (DEF), 4 (GHI), 5 (JKL), 6 (MNO), 7 (PQRS), 8 (TUV), 9 (WXYZ), if input digit 2, then by 2 keys+0 key, input A, by 2 keys+1 key, input B is by 2 keys+2 keys, and input C is by 2 keys+3 keys, and other by that analogy.Wanting the model of entering apparatus as the user, is 74LS04, and then import after voice suggestion: 704053740040 get final product, and computer is received the voice document of back according to storage, repeats with voice, treat that the user confirms after, provide quotation according to the price-list of the storage of database.

Equally, this device also can be used for enterprises and institutions, institutional settings, is used for meeting affairs item notice etc., only needs to revise computer applied algorithm, finishes as notice can be set, and pulls out automatically logically to assign the informant and report notice reception and registration situation, accepts the new instruction of owner.This device also can be used for family, making the telephone speech sound message leaving machine uses, be connected on the plain old telephone, for each kinsfolk is provided with a password, different messages is set, after this device is received phone, can points out " be the password that kinsfolk or the good friend of family input you, or look for male owner to look for male owner to finish for button 2# number " after the user presses key by button 1, then, carry out speech play according to different messages.If the kinsfolk then can point out the message of whether listening other kinsfolk, or revise the message of controlling oneself.

This device also can be used for the main control computer of family's remote phone control device, reply by telephone wire and effector, can with detailed voice circular, and receive the order that owner transmits by telephone key-press by the running status of computer by other interface collection household electrical appliance, control, repeat owner's operational order, end of operation is circulated a notice of operating result once more, like this, just can accurately receive owner and carry out the straighforward operation order at common remote phone.

Opening the caller identification area, with the passive alternate acknowledge of telephone subscriber the time, as what open is double-tone caller ID Presentation Function frequently, can obtain the caller identification number by the direct DTMF decoding circuit of single-chip microcomputer, what open is the area of FSK incoming call display function, installs the FSK decoding circuit additional, can directly obtain the incoming call number by single-chip microcomputer, send into computer storage, to obtain more subscriber data.

Fig. 2, Fig. 3 are specific embodiments using above-mentioned principle, call processing module is made up of single-chip microcomputer, bell flowing detecting circuit, audio signal testing circuit, dislodging machine control circuit, input and output isolated amplifier, DTMF signaling circuit, DTMF decoding circuit and computer interface circuit, Fig. 2 is bell flowing detecting circuit, audio signal testing circuit, dislodging machine control circuit, input and output isolated amplifier, telephone interface circuit part, and Fig. 3 is DTMF signaling circuit, DTMF decoding circuit, and computer interface circuit part.Referring to Fig. 2, the circuit bell flowing detecting circuit is by capacitance, bridge B1 and photoelectrical coupler and voltage-stabiliser tube, the current-limiting resistance filter capacitor is formed, when telephone ring signal arrives, 90V on the telephone line, the 25HZ bell signal, through capacitance, after bridge rectifier and the filtering, drive photoelectrical coupler, by triode T1 inverter, obtain the ring detection signal, during ring, bell signal RING output is a low level, during no bell signal is high level, this RING signal is linked an interruptive port INTO of single-chip microcomputer, causes that when bell signal arrives single-chip microcomputer INTO interrupts, and makes single-chip microcomputer can detect bell signal.

Dislodging machine control circuit is made up of bridge B1, triode T2, photoelectrical coupler U2 and DC loop resistance R 9 and peripheral circuit, by single-chip microcomputer input and output P10 foot control system, the control triode ends when P10 is output as high level, make circuit be in the simulation hook state, control triode conducting when P10 is output as low level, DC load R9 inserts loop, makes this device be in the simulation off hook state.At off hook state, conversation and DTMF sending and receiving circuit exchange connection with telephone wire.

The input and output isolated amplifier is formed input and output distribution amplifier by transformer TRANS1 and triode T3 and peripheral circuit, the amplifying circuit that T4 and peripheral circuit are formed, T5 and locating encloses the emitter follower that circuit is formed, electronic analog switch circuit is formed, wherein triode T3 and peripheral circuit are formed input and output distribution amplifier, carry out the input and output distribution, the amplifying circuit that T4 and peripheral circuit are formed amplifies distribution one tunnel to the audio signal of importing and sends into the DTMF decoding circuit, another road is sent into T5 and is located to enclose the emitter follower output that circuit forms and receive computer LINE IN mouth; Dtmf dialing output and the output of computer sound card are connected the base stage of T3 respectively by electronic switch CD4066, control its logical continuing by P11, the P12I/O pin level of single-chip microcomputer, so that when carrying out the computer dialing, avoid the influence of sound card output.The amplifier that is made of T4 and peripheral circuit from telephone line input signal input amplifies back one tunnel to be sent into MT8888 and carries out double-tone and decode frequently, leads up to emitter follower that T5 and peripheral circuit constitute LINE IN or the MIC input to sound card.

The signal tone testing circuit is a core with phase-locked loop audio decoder integrated circuit LM567, add peripheral circuit and constitute the 450HZ tone decoder, carrying out signal tone detects, 3 pin output telephone line audio signal from MT8888, be capacitively coupled to 3 pin of LM567, detect square wave AFTEST from the output of 8 pin of LM567 and send fracture the single-chip microcomputer INT1, signal tone is differentiated accurately by single-chip microcomputer.

Referring to Fig. 3, dtmf signal decoding circuit and signaling circuit, be the center with MT8888 and locate to enclose circuit and form, MT8888 is the dtmf signal transceiver integrated circuit that adopts the CMOS explained hereafter, the switched capacitor D/A converter that distorted signals is little, frequency stability is high is partly adopted in its transmission, can send 16 kinds of dual tone multi-frequency dtmf signals.Receiving unit is used to finish reception, separation and the decoding of dtmf signal, and exports in the mode of 4 parallel-by-bit binary codes.Can be connected with single-chip microcomputer easily, receive and dispatch work decoding, the Dual Tone Multifrequency of sending here when telephone wire is through being capacitively coupled to the signal input part of MT8888, MT8888 is after having detected dtmf signal input and demodulation, being latched into output register, and IRQ/CP holds output low level, fracture among the T0 of access single-chip microcomputer, cause singlechip interruption, single-chip microcomputer will be peeked by data port, represent the tetrad code Q4～Q1 of dialing value to be taken into, and further be sent to Computer Processing.When sending out number, single-chip microcomputer is provided with the MT8888 write control register, transmits data to transmitter register, carries out the number of taking place frequently of DTMF double-tone.Single-chip microcomputer is served as by 89C51, as the various input of telephone wire control centre, with the computer interface circuit of serving as by RS232 level conversion integrated circuit MAX202 and peripheral circuit, be connected to the computer standard serial ports, by the computer serial port, single-chip microcomputer and computer application program communicate, the order that the object computer application program is sent, simultaneously, single-chip microcomputer detects the ringing-current on the telephone line, audio signal, the DTMF decode value, the result is sent and computer the LINE IN of computer sound card or MIC end, LINE OUT end respectively with the input of call processing module, the output isolated amplifier connects, the broadcast of carrying out voice with record; The guide sound as a result that computer detects according to single-chip microcomputer sticks into the lang sound and plays and record, and sends single-chip microcomputer playing the result to by computer interface, coordinates single-chip microcomputer input and on-hook action.Present embodiment is started once by computer applied algorithm, computer is sent out starting command from serial port by MAX202 and is given single-chip microcomputer, after single-chip microcomputer is received starting command, check ringing circuit, as ring detecting circuit ringing tone is arranged, the INT0 pin that is single-chip microcomputer is a low level, then notify computer just busy, whether detecting ring effective, as there is not a ringing tone, then wait for the user's telephone number to be linked up that receiving computer extracts, after receiving, single-chip microcomputer drags down P1.0 mouth current potential, make triode T2 conducting by photoelectrical coupler U2, resistance R 9 inserts loop, the simulation off-hook, simultaneously, the input and output amplifier also inserts loop by audio frequency isolating transformer and capacitance, whether single-chip microcomputer is normal by the dialing tone of the continuous peak sound of 8 pin 450HZ of INT1 pin detection LM567 tone decoder, as normally, it is low then putting the P1.2 pin earlier, and the P1.1 pin is high, makes 1 of analog switch, 3 pin disconnect, turn-offing computer sound card externally imports, analog switch 11 pin and 10 are connected, the dual-tone dialing signal is externally connected, get and rigidly connect the telephone number of receiving, control MT8888 begins to carry out dual-tone dialing, after the dialing, detect ring-back tone by tone decoder, or busy tone, as ring-back tone from having to nothing, then control analog switch 1,3 and connect, the external voice output of computer sound card is connected, and notice compuphone user links up, computer carries out alternate acknowledge promptly by the signal language of finishing in advance with the user, by audio signal on the single-chip microcomputer monitoring telephone wire and the double-tone output valve of decoding frequently, communicate by serial port, up to replying end, Single-chip Controlling P1.0 is high, the simulation on-hook.

Present embodiment starts once passive alternate acknowledge process by distant place telephone subscriber: bell signal, cause that single-chip microcomputer INTO pin is low for putting, cause singlechip interruption, single-chip microcomputer calculates its low level time, as surpassing predetermined value, then notify computer, the control analog switch is connected, the external voice output of computer sound card is connected, and notify the compuphone user to link up, and machine is carried in simulation simultaneously, and computer is promptly by the signal language of finishing in advance, carry out alternate acknowledge with the user, by audio signal on the single-chip microcomputer monitoring telephone wire and the double-tone output valve of decoding frequently, communicate by serial port, up to replying end, Single-chip Controlling P1.0 is high, the simulation on-hook.Finish once passive alternate acknowledge process.

The 5V power supply that the power supply of this device can directly be drawn in the computer uses.

This device and telephone wire are not altogether, under the situation of off-hook not, there is not DC channel, the electric current that ringing circuit only takes a morsel, do not influence use in parallel with other phone, on the telephone set of new production, can place the circuit board of the call processing module of this device in the telephone set, on the casing of telephone set, leave LINE IN, the LINEOUT socket, and be used to connect computer interface and dc power plug seat, LINE IN, LINE OUT socket links to each other with the input and output isolated amplifier of call processing module, general calculation machine interface plug seat links to each other with computer interface circuit and power supply in the call processing module, call processing module and phone are connected on the telephone wire, connector assembly is connected on computer interface and the DC power supply by connecting line, the LINE IN on the telephone set, LINE OUT socket is connected to the LINE OUT of computer sound card respectively by connecting line, LINE IN (or MIC end).

Claims (2)

1. telephone message alternate acknowledge device based on computer sound card, comprise computer, sound card, computer interface and call processing module are formed, call processing module is by single-chip microcomputer, bell flowing detecting circuit, the audio signal testing circuit, dislodging machine control circuit, the input and output isolated amplifier, DTMF signaling circuit, DTMF decoding circuit and computer interface circuit are formed, it is characterized in that: single-chip microcomputer respectively with bell flowing detecting circuit, the audio signal testing circuit, the DTMF number of sending out, the DTMF decoding circuit links to each other, and finishes the dialing sound, busy tone, ring-back tone and the called party machine state-detection of seting out; Single-chip microcomputer links to each other with computer interface by the computer interface circuit and communicates coordination; The LINE IN of computer sound card (or MIC end), LINE OUT end is connected with input, the output isolated amplifier of call processing module respectively, carries out the broadcast of voice and records; Real-time Monitoring Line state of single-chip microcomputer and reception double-tone be decoded data frequently, and detecting and decoded result is sent to computer interface by the computer interface circuit, receive by computer, the result that computer detects according to single-chip microcomputer carries out speech play by sound card and records, and a broadcast result sends single-chip microcomputer to by computer interface, coordination single-chip microcomputer input and on-hook action; This device can move computer applied algorithm and start active and user interactions answering, also can start passive alternate acknowledge process by the far-end ordinary telephone subscriber.

2. as claim 1 described a kind of telephone message alternate acknowledge device based on computer sound card, it is characterized in that: described call processing module also can be loaded in the telephone set, leave LINE IN, LINE OUT socket on the casing of telephone set, and be used to connect computer interface and dc power plug seat, LINE IN, LINE OUT socket link to each other with the input and output isolated amplifier of call processing module, connector assembly links to each other with computer interface circuit and power supply in the call processing module, and call processing module and phone are connected on the telephone wire; Connector assembly is connected on computer interface and the DC power supply by connecting line, and the LINE IN on the telephone set, LINE OUT socket link to each other with LINE OUT, the LINE IN (or MIC end) of computer sound card by connecting line respectively.

Images