CN1235385C - Method and device for stimulating automatic telephone answering and recording - Google Patents
Method and device for stimulating automatic telephone answering and recording Download PDFInfo
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- CN1235385C CN1235385C CN 02155888 CN02155888A CN1235385C CN 1235385 C CN1235385 C CN 1235385C CN 02155888 CN02155888 CN 02155888 CN 02155888 A CN02155888 A CN 02155888A CN 1235385 C CN1235385 C CN 1235385C
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Abstract
The present invention relates to a method for stimulating automatic telephone answering and recording, which has the technical scheme that the existing common simulation telephones and computers are fully utilized, and left words of a telephone owner are stored in a memory connected with an MCU; a modulating and demodulating device and the MCU automatically answer incoming calls in the shutdown state of the computer when the telephone owner has no answer; the left words of the telephone owner in the memory are read and are transmitted to the incoming call through a D/A converting circuit in the modulating and demodulating device, and the telephone prompts the incoming call to leave words; the left words of the incoming call are stored in the memory, and the left words in the memory are read by an analog telephone and are managed. The present invention also provides a device for realizing the method for stimulating automatic telephone answering and recording, which comprises the modulating and demodulating device having LVC(Line/Voice/Codec) functions, the MCU used for controlling the whole automatic answering and recording process, the memory used for storing the left words of telephone owners and the left words of the incoming calls, and a computer internal power supply connected with the MCU and used for supplying power to the whole device.
Description
Technical field
The present invention relates to a kind of phone automatic answering machine method, refer in particular to a kind of method of analog telephone automatic answering machine.The invention still further relates to a kind of analog telephone automatic answering machine device of realizing this method.
Background technology
At present computer is comparatively universal in the family, standard configuration modulator-demodulator (MODEM) 1 all on many computers.As shown in Figure 1, generally speaking, the telephone set master just no longer pulls up after telephone wire 5 and telephone set 4 inserted the joint of modems, machine (phone) 20 and online circuit (line) 21 generally all are direct-connected because generally answer the call on the modem, as shown in Figure 2.Therefore, can directly surf the Net during online, just can use telephone set when not surfing the Net.In the time of the phone incoming call, telephone set will ring, and the telephone set master can answer.Many in addition computers all have microcontroller (MCU, micro controller unit) 2 to be used to control Infrared remote controller, front panel light efficiency etc., for example Lian Xiang types such as the proud son of heaven.The MCU2 that always works is arranged in the main frame, and this MCU2 can pass through infrared interface circuit I/F, receives the instruction of Infrared remote controller, and connects computer motherboard 10 by serial ports RS232 interface.
Compare with computer, phone is more popular, but the telephone set that many families use is analog telephone mostly, does not have the function of automatic answering machine.The digital telephone set that also has some band sound-recording functions in addition, " telephone device of band recording and playing function " of the patent No. 97126248.9 disclosed Matsushita Electric Industries for example, but the general costliness all of this class telephone set price.And the user of many use analog telephones also wishes to have sound-recording function.If but changed digital telephone set, old analog telephone will cause waste.
If in fact use the domestic consumer's of analog telephone computer booting, with telephone wire be connected with telephone set finish after, for example start some application software: Supervoice, modem spy etc. just can realize the function of telephonograph.But the telephone set master computer-chronograph of staying out often shuts down, and so also just can not utilize the function of the computer realization telegraphone of family generally speaking.
Summary of the invention
The object of the present invention is to provide a kind of method of analog telephone automatic answering machine, when the computer shutdown state, realize the phone automatic answering machine.
Another object of the present invention is to provide a kind of device of realizing the method for above-mentioned analog telephone automatic answering machine.
For achieving the above object, the method for a kind of analog telephone automatic answering machine provided by the invention, step is as follows:
A) machine master message is deposited in the memory that is connected with microcontroller with the audio files form;
B) at the computer shutdown state, when coming to visit the phone incoming call, modem produces the interrupt notification microcontroller;
C) microcontroller is waited for one section preset time, if phone by the telephone set primary response, modulator-demodulator can produce an interrupt notification microcontroller again, microcontroller does not carry out any action, returns the b step, waits for visiting next time phone; If not by the telephone set primary response, make and replying by microcontroller in one section preset time for visiting phone;
D) microcontroller reads the machine master message in the memory, return to visiting phone by the D/A change-over circuit in the modem, and the visiting telephone message of prompting;
E) the modulator-demodulator telephone message of will coming to visit is changed by A/D, sampling, and the coding back is stored in the memory with the audio files form, and the local zone time during microcontroller record message, deposits in the memory together.
F) after visiting phone is hung up, modem produces the interrupt notification microcontroller, returns a step, waits for visiting next time phone.
G) microcontroller reads the visiting telephone message in the memory, and management should visiting telephone message.
The method of described a kind of analog telephone automatic answering machine after the above-mentioned d step, if visiting phone is reluctant message, but is directly hung up the telephone, and at this moment enters the f step.
The method of described a kind of analog telephone automatic answering machine, above-mentioned a step are when the computer booting state, to connect microcontroller by computer motherboard and deposit selected machine master message in memory with the audio files form; A kind of method is to transfer machine master message to audio files by the computer microphone to deposit memory in; Another kind of directly the message as the machine master with the audio files of Computer Storage deposits memory in.
The method of described a kind of analog telephone automatic answering machine, above-mentioned a step is, when the computer shutdown state, the information of the admission machine master message that the control board that microcontroller acceptance one connects microcontroller sends, this information is through general I/O port (GPIO) input microcontroller, to transfer digital signal to by the analog signal that the analog telephone microphone transmits through modulator-demodulator, microcontroller is stored in this digital signal in the memory; Microcontroller is also accepted deletion machine master that control board the sends information of leaving a message, and erasure signal is imported microcontroller through general I/O port, the machine master message in the microcontroller deletion memory.
The method of described a kind of analog telephone automatic answering machine, above-mentioned g step be, when the computer booting state, connect microcontroller by computer motherboard and read visiting telephone message in the memory, and management should visiting telephone message.
The method of described a kind of analog telephone automatic answering machine, above-mentioned g step is, when the computer shutdown state, microcontroller is accepted the information that reads visiting telephone message that a control board that connects microcontroller sends, this information is imported microcontroller through general I/O port, microcontroller is put into RAM being stored in the telephone message of coming to visit in the memory, through modulator-demodulator analog signal is passed to the analog telephone microphone; Microcontroller is also accepted the visiting telephone message information of deletion that control board sends, and erasure signal is imported microcontroller through general I/O port, the visiting telephone message in the microcontroller deletion memory.
The method of described a kind of analog telephone automatic answering machine, above-mentioned g step is, when the computer shutdown state, microcontroller is accepted the information that reads visiting telephone message that a control board that connects microcontroller sends, this information is imported microcontroller through general I/O port, microcontroller is put into RAM being stored in the telephone message of coming to visit in the memory, and be sent to one with the audio decoder (AUDIO CODEC) that is connected microcontroller by peripheral element extension interface (PCI), and by the loudspeaker plays that connects audio decoder; Microcontroller is also accepted the visiting telephone message information of deletion that control board sends, and erasure signal is imported microcontroller through general I/O port, the visiting telephone message in the microcontroller deletion memory.
The method of described a kind of analog telephone automatic answering machine behind the visiting telephone message of storage, continues to send an alerting signal; After visiting telephone message deletion, stop sending this alerting signal.
The method of described a kind of analog telephone automatic answering machine, wherein said alerting signal are the light signal of peripheral hardware flicker.
The method of described a kind of analog telephone automatic answering machine, wherein said memory are flash memory (FLASH).
For achieving the above object, a kind of analog telephone automatic answering machine device provided by the invention is used to realize the method for above-mentioned analog telephone automatic answering machine, and it comprises:
One has the modem of LVC (Line/Voice/Codec) function, this modem is connected with external call line, analog telephone, and is connected with microcontroller with the mainboard of computer respectively by peripheral element extension interface (PCI) bus, be used for to outside telephone wire conveyer master's message and receive the message of the phone of coming to visit;
One microcontroller connects modem by the peripheral element extension interface bus, is used to control whole automatic answering machine process;
One memory is connected with microcontroller by data peripheral element extension interface bus, is used for the stored telephone machine master message and the telephone message of coming to visit;
One computer-internal power supply, connect microcontroller, be used for to whole device power supply, under the computer booting state, peripheral element extension interface bus between microcontroller and the modulator-demodulator disconnects, and the peripheral element extension interface bus between the mainboard of modulator-demodulator and computer is connected; Under the computer shutdown state, the peripheral element extension interface bus between microcontroller and the modulator-demodulator is connected, and the peripheral element extension interface bus between the mainboard of modulator-demodulator and computer disconnects;
Described analog telephone automatic answering machine device, wherein said microcontroller connects computer motherboard by serial ports RS232 interface.
Described analog telephone automatic answering machine device, wherein said memory are flash memory (FLASH).
Described analog telephone automatic answering machine device more comprises a control board, and this control board is connected with microcontroller by general I/O port, is provided with function key at control board.
Described analog telephone automatic answering machine device, wherein said function key comprises a message key at least, at the computer shutdown state, press the message key, the information that the admission machine master that microcontroller accepts to send leaves a message, this information is imported microcontroller through general I/O port, will transfer digital signal to by the analog signal that the analog telephone microphone transmits through modulator-demodulator, and microcontroller is stored in this digital signal in the memory.
Described analog telephone automatic answering machine device, wherein said function key more comprises a play button, at the computer shutdown state, press play button, microcontroller is accepted the information of the reading machine master message or the telephone message of coming to visit, this information is imported microcontroller through general I/O port, and microcontroller is put into RAM being stored in the telephone message of coming to visit in the memory, through modulator-demodulator analog signal is passed to the analog telephone microphone; The player master message or the telephone message of coming to visit.
Described analog telephone automatic answering machine device, wherein said function key more comprises a delete key, at the computer shutdown state, press delete key, microcontroller is accepted the deletion machine master message or the telephone message information of coming to visit, erasure signal is imported microcontroller through general I/O port, the machine master message or the telephone message of coming to visit in the microcontroller deletion memory.
Described analog telephone automatic answering machine device, wherein said control board is provided with an indicator light, will glimmer when visiting telephone message is arranged in the memory, no longer flicker after visiting leave word call is deleted.
Described analog telephone automatic answering machine device, more comprise an audio decoder that is connected with loud speaker, this audio decoder connects microcontroller by the peripheral element extension interface bus, can be by the message of the machine master in the loudspeaker plays memory or the telephone message of coming to visit.
In sum, advantage of the present invention is as follows:
Make full use of existing common analog telephone and computer, utilize the computer of not starting shooting to combine and realize the automatic answering machine function with common analog telephone.Such design can allow the telephone set master stay out, and computer does not yet realize the automatic answering machine function under the situation of starting shooting.After going home, the telephone set master can conveniently listen to telephonograph.
Description of drawings
Fig. 1 is the schematic diagram that modem interface connects analog telephone and telephone wire;
Fig. 2 is modem line figure;
Fig. 3 is an analog telephone automatic answering machine schematic representation of apparatus of the present invention;
Fig. 4 is the flow chart of analog telephone automatic answering machine method of the present invention;
Fig. 5 is a flow chart of playing and delete visiting telephone message under the off-mode of the present invention.
Embodiment
As shown in Figure 3, a kind of analog telephone automatic answering machine device includes:
One has the modem 1 of LVC (Line/Voice/Codec) function, this modem 1 is connected with external call line 5, analog telephone 4, and 11,12 is connected with MCU2 with the mainboard 10 of computer respectively by pci bus, be used for to the come to visit message of phone of outside telephone wire 5 conveyer masters' message and reception;
One MCU2 connects modem 1 by pci bus, and connects computer motherboard 10 by serial ports RS232 interface, is used to control whole automatic answering machine process;
One memory 3, present embodiment is selected FLASH for use, is connected with MCU2 by data pci bus 14, is used for the stored telephone machine master message and the telephone message of coming to visit;
Whether one computer-internal power supply 6 connects MCU2, gives whole device power supply by 5Vsb (standby), and also the signal of handle+5V is exported to MCU2, be used for MCU2 differentiation computer and start.
Under the computer booting state, because power supply has+input of 5V, MCU2 resets, and makes the pci bus 12 between modulator-demodulator 1 and the MCU2 be in high-impedance state, is off-state.This moment, mainboard 10 was effective with the pci bus 11 of modem 1, MCU2 does not work, but can be by carrying out communication between serial ports and the mainboard 10, such as with telephone wire be connected with telephone set finish after, by Supervoice, the telephonograph of coming to visit of softwares such as modem spy.
When this state, the telephone set master is entered into machine master message among the FLASH by the external microphone of computer, and message is to preserve with the audio files form in FLASH, also existing audio files on the hard disc of computer can be deposited among the FLASH.After machine master message deposits in, can listen to message,, can delete and re-enter message if dissatisfied by the computer audio amplifier.After message is satisfied, just can shut down, connect modulator-demodulator 1 and external call line 5, analog telephone 4, wait for visiting phone.
Under the computer shutdown state, because the computer-internal power supply do not have+output of 5V, MCU2 judges that computer shuts down, the pci bus 11 that modem 1 is connected with computer motherboard 10 is invalid, pci bus 12 between MCU2 and the modem 1 is effective, modem 1 is formed analog telephone automatic answering machine system with MCU2, and MCU2 control whole system realizes this function.
Wherein the MCU2 among Fig. 3 can not connect computer motherboard 10.In the case, just under open state, can not carry out machine master message and read visiting telephone message.But under the computer shutdown state, can and read visiting telephone message by the analog telephone message.Under this state, present embodiment provides a control board 9, and this control board 9 is connected with MCU2 by GPIO (by I/O), establishes a message key at control board 9.When the telephone set master need leave a message, press the message key,, be entered among the FLASH through modulator-demodulator 1 and MCU2 by the phone transmitter message.One play button also is set on control board 9, is used for playing the order of leaving a message, press play button, listen to machine master message by telephone receiver to the MCU2 input.Also can establish an AUDIOCODEC7 who is connected with loud speaker 8 again, this AUDIO CODEC7 connects MCU2 by pci bus 13.Press play button, just can leave a message, and need not to use telephone receiver by loud speaker 8 player masters.In order to delete machine master message, a delete key also is set on control board 9, be used for order to MCU input delete message, can leave a message again after the deletion.In like manner, also can listen to visiting telephone message and deletion should visiting telephone message.
Behind the machine master message, can make computer be in off-mode, but MCU is working the visiting phone of wait always.
As shown in Figure 4, this figure is the flow chart of analog telephone automatic answering machine method of the present invention.
A) in FLASH, deposit the audio files that the machine master leaves a message in;
B) at the computer shutdown state, when coming to visit the phone incoming call, modem produces interrupt notification MCU;
C) MCU waits for one section preset time, if phone by the telephone set primary response, modulator-demodulator can produce an interrupt notification MCU again, MCU does not carry out any action, returns the b step, waits for visiting next time phone; If not by the telephone set primary response, MCU makes and replying phone in one section preset time;
D) MCU reads the machine master message in the FLASH, return to visiting phone by the D/A change-over circuit in the modem, and the visiting telephone message of prompting;
E) the modulator-demodulator telephone message of will coming to visit is changed by A/D, sampling, and the coding back is stored among the FLASH with the audio files form, and the local zone time during MCU record message, deposits among the FLASH together.
F) after visiting phone is hung up, modem produces interrupt notification MCU, returns a step, waits for visiting next time phone.
If visiting phone is reluctant to leave a message, but directly hangs up the telephone, at this moment the process of e step storage message is just skipped in the above-mentioned steps, directly enters the f step.
In order to make the telephone set master in time conveniently know whether visiting telephone message, control board is provided with the message indicator light, if visiting telephone message is arranged, indicator light will glimmer.After the above-mentioned analog telephone automatic answering machine method e step, the indicator light flicker.
The telephone set master sees the indicator light flicker, wants to listen to message, enters the g step.Press play button on the control board, listen to visiting telephone message or by the visiting telephone message of loudspeaker plays by telephone receiver.Press delete key, then can delete visiting telephone message.
Because the tonequality of loud speaker is better than phone transmitter, therefore preferable mode is for selecting loudspeaker plays, as shown in Figure 5.Flow process is as follows:
The message indicator light is bright, and by listening to the message button, MCU puts into the audio files of typing among the FLASH RAM of MCU, this digital signal is converted to analog signal by D/A, passes to loud speaker by AUDIOCODEC and broadcasts, after broadcast finishes, press delete key and will delete this audio files, the message indicator light goes out.
Also can under the computer booting state, read the visiting telephone message of preserving with audio files in the FLASH, broadcast by audio amplifier.And can read the visiting telephone message time simultaneously, manage this audio files.
Claims (17)
1, a kind of method of analog telephone automatic answering machine, it is characterized in that: step is as follows:
A) machine master message is deposited in the memory that is connected with microcontroller with the audio files form;
B) at the computer shutdown state, when coming to visit the phone incoming call, modem produces the interrupt notification microcontroller;
C) microcontroller is waited for one section preset time, if phone by the telephone set primary response, modulator-demodulator can produce an interrupt notification microcontroller again, microcontroller does not carry out any action, returns the b step, waits for visiting next time phone; If not by the telephone set primary response, make and replying by microcontroller in one section preset time for visiting phone;
D) microcontroller reads the machine master message in the memory, return to visiting phone by the D/A change-over circuit in the modem, and the visiting telephone message of prompting;
E) the modulator-demodulator telephone message of will coming to visit is changed by A/D, sampling, and the coding back is stored in the memory with the audio files form, and the local zone time during microcontroller record message, deposits in the memory together.
F) after visiting phone is hung up, modem produces the interrupt notification microcontroller, returns a step, waits for visiting next time phone.
G) microcontroller reads the visiting telephone message in the memory, and management should visiting telephone message.
2, the method for a kind of analog telephone automatic answering machine according to claim 1 is characterized in that: after the above-mentioned d step, if visiting phone is reluctant message, but directly hang up the telephone, at this moment enter the f step.
3, the method for a kind of analog telephone automatic answering machine according to claim 1 and 2, it is characterized in that: above-mentioned a step is, when the computer booting state, connect microcontroller by computer motherboard and deposit selected machine master message in memory with the audio files form.
4, the method for a kind of analog telephone automatic answering machine according to claim 1 and 2, it is characterized in that: above-mentioned a step is, when the computer shutdown state, the information of the admission machine master message that microcontroller acceptance one control board that is connected in microcontroller sends, this information is imported microcontroller through general I/O port, to transfer digital signal to by the analog signal that the analog telephone microphone transmits through modulator-demodulator, microcontroller is stored in this digital signal in the memory, preserves with the audio files form; Microcontroller is also accepted deletion machine master that control board the sends information of leaving a message, and erasure signal is imported microcontroller through general I/O port, the machine master message in the microcontroller deletion memory.
5, the method for a kind of analog telephone automatic answering machine according to claim 1 and 2, it is characterized in that: above-mentioned g step is, when the computer booting state, connect microcontroller by computer motherboard and read visiting telephone message in the memory, and management should visiting telephone message.
6, the method for a kind of analog telephone automatic answering machine according to claim 1 and 2, it is characterized in that: above-mentioned g step is, when the computer shutdown state, microcontroller is accepted the information that reads visiting telephone message that a control board that connects microcontroller sends, this information is imported microcontroller through general I/O port, microcontroller is put into RAM being stored in the telephone message of coming to visit in the memory, through modulator-demodulator analog signal is passed to the analog telephone microphone; Microcontroller is also accepted the visiting telephone message information of deletion that control board sends, and erasure signal is imported microcontroller through general I/O port, the visiting telephone message of microcontroller deletion.
7, the method for a kind of analog telephone automatic answering machine according to claim 1 and 2, it is characterized in that: above-mentioned g step is, when the computer shutdown state, microcontroller is accepted the information that reads visiting telephone message that a control board that connects microcontroller sends, this information is imported microcontroller through general I/O port, microcontroller is put into RAM being stored in the telephone message of coming to visit in the memory, and be sent to one with the audio decoder that is connected microcontroller by peripheral element extension interface, and by the loudspeaker plays that connects audio decoder; Microcontroller is also accepted the visiting telephone message information of deletion that control board sends, and erasure signal is imported microcontroller through general I/O port, the visiting telephone message of microcontroller deletion.
8, the method for a kind of analog telephone automatic answering machine according to claim 1 is characterized in that: behind the visiting telephone message of storage, continue to send an alerting signal; After visiting telephone message deletion, stop sending this alerting signal.
9, a kind of analog telephone automatic answering machine device is used to realize it is characterized in that the method for above-mentioned analog telephone automatic answering machine:
One has the modem of LVC (Line/Voice/Codec) function, this modem is connected with external call line, analog telephone, and is connected with microcontroller with the mainboard of computer respectively by the peripheral element extension interface bus, be used for to outside telephone wire conveyer master's message and receive the message of the phone of coming to visit;
One microcontroller connects modem by the peripheral element extension interface bus and is used to control whole automatic answering machine process;
One memory is connected with microcontroller by data peripheral element extension interface bus, is used for the stored telephone machine master message and the telephone message of coming to visit;
One computer-internal power supply, connect microcontroller, be used for to whole device power supply, under the computer booting state, peripheral element extension interface bus between microcontroller and the modulator-demodulator disconnects, and the peripheral element extension interface bus between the mainboard of modulator-demodulator and computer is connected; Under the computer shutdown state, the peripheral element extension interface bus between microcontroller and the modulator-demodulator is connected, and the peripheral element extension interface bus between the mainboard of modulator-demodulator and computer disconnects.
10, analog telephone automatic answering machine device according to claim 9 is characterized in that, wherein microcontroller connects computer motherboard by serial ports RS232 interface.
11, according to claim 9 or, 10 described analog telephone automatic answering machine devices, it is characterized in that: wherein said memory is a flash memory.
12, according to claim 9 or, 10 described analog telephone automatic answering machine devices, it is characterized in that: more comprise a control board, this control board is connected with microcontroller by general I/O port, is provided with function key at control board.
13, analog telephone automatic answering machine device according to claim 12, it is characterized in that: wherein said function key comprises a message key at least, at the computer shutdown state, press the message key, the information that the admission machine master that microcontroller accepts to send leaves a message, this information is imported microcontroller through general I/O port, will transfer digital signal to by the analog signal that the analog telephone microphone transmits through modulator-demodulator, and microcontroller is stored in this digital signal in the memory.
14, analog telephone automatic answering machine device according to claim 13, it is characterized in that: wherein said function key more comprises a play button, at the computer shutdown state, press play button, microcontroller is accepted the information of the reading machine master message or the telephone message of coming to visit, this information is imported microcontroller through general I/O port, and microcontroller is put into RAM being stored in the telephone message of coming to visit in the memory, through modulator-demodulator analog signal is passed to the analog telephone microphone; The player master message or the telephone message of coming to visit.
15, analog telephone automatic answering machine device according to claim 14, it is characterized in that: wherein said function key more comprises a delete key, at the computer shutdown state, press delete key, microcontroller is accepted the deletion machine master message or the telephone message information of coming to visit, erasure signal is imported microcontroller through general I/O port, the microcontroller deletion machine master's message or the telephone message of coming to visit.
16, analog telephone automatic answering machine device according to claim 12, it is characterized in that: wherein said control board is provided with an indicator light, will glimmer when visiting telephone message is arranged in the memory, no longer flicker after visiting leave word call is deleted.
17, analog telephone automatic answering machine device according to claim 12, it is characterized in that: more comprise an audio decoder that is connected with loud speaker, this audio decoder connects microcontroller by the peripheral element extension interface bus, can be by the message of the machine master in the loudspeaker plays memory or the telephone message of coming to visit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02155888 CN1235385C (en) | 2002-12-13 | 2002-12-13 | Method and device for stimulating automatic telephone answering and recording |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02155888 CN1235385C (en) | 2002-12-13 | 2002-12-13 | Method and device for stimulating automatic telephone answering and recording |
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| CN1509049A CN1509049A (en) | 2004-06-30 |
| CN1235385C true CN1235385C (en) | 2006-01-04 |
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| CN 02155888 Expired - Fee Related CN1235385C (en) | 2002-12-13 | 2002-12-13 | Method and device for stimulating automatic telephone answering and recording |
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| CN101714009A (en) * | 2009-05-14 | 2010-05-26 | 翁印嵩 | Computer integrating universal telephone function |
| CN103533159A (en) * | 2013-09-03 | 2014-01-22 | 国家电网公司 | System for intelligentizing non-intelligentized telephone |
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Effective date of registration: 20170428 Address after: 100055 Beijing, Guang'an, No. 305 Xicheng District street, No. two, building 10, floor 9, floor 1112 Patentee after: New venture (Beijing) Consulting Service Co., Ltd. Address before: 100085 Beijing on the road to entrepreneurship, No. 6 Haidian District Patentee before: Lenovo (Beijing) Co., Ltd. |
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Granted publication date: 20060104 Termination date: 20171213 |