CN202222017U - Communication system - Google Patents

Communication system Download PDF

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Publication number
CN202222017U
CN202222017U CN201120319113XU CN201120319113U CN202222017U CN 202222017 U CN202222017 U CN 202222017U CN 201120319113X U CN201120319113X U CN 201120319113XU CN 201120319113 U CN201120319113 U CN 201120319113U CN 202222017 U CN202222017 U CN 202222017U
Authority
CN
China
Prior art keywords
communication
communication terminal
mobile phone
interface circuit
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201120319113XU
Other languages
Chinese (zh)
Inventor
王志梁
吴鑫琦
张孝秋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201120319113XU priority Critical patent/CN202222017U/en
Priority to PCT/CN2012/075462 priority patent/WO2013029391A1/en
Application granted granted Critical
Publication of CN202222017U publication Critical patent/CN202222017U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The utility model provides a communication system, which comprises a first communication terminal, a communication interface circuit and a second communication terminal, wherein the communication interface circuit is connected to the first communication terminal and used for switching communication services of the first communication terminal to those of the second communication terminal, and the second communication terminal is connected to the communication interface circuit and used for realizing communication services of the first communication terminal. By the aid of the above technical scheme, the problem that power consumption of the communication terminals cannot be effectively reduced in the prior art is solved, and further, the effect of reducing power consumption of the communication terminals on the premise without affecting normal communication services is achieved.

Description

Communication system
Technical field
The utility model relates to the communications field, in particular to a kind of communication system.
Background technology
Existing mobile phone; No matter function type or intelligent type; The situation of using wired mode to connect has three kinds: 1. use charging wire to cell-phone charging, 2. use data wire with] personal computer (Personal Computer abbreviates PC as) or other equipment carry out USB (Universal Serial Bus; Abbreviate USB as) or the serial ports connection, 3. use wired earphone to converse.
In these application forms; The communication of mobile phone, call function all are to realize through radio frequency of itself and voicefrequency circuit; And increasingly high and application program is more and more along with the intelligent degree of mobile phone terminal, and the capacity requirement of mobile phone batteries is also increasingly high, therefore; How not influencing under the professional prerequisite of proper communication, reducing mobile telephone power consumption is the technical problem of needing solution badly.
To the problems referred to above in the correlation technique, effective solution is not proposed as yet at present.
The utility model content
The main purpose of the utility model is to provide a kind of communication system, to address the above problem at least.
An aspect according to the utility model provides a kind of communication system, comprising: first communication terminal; Communication interface circuit is connected to first communication terminal, is used for the communication service of first communication terminal is switched to the second communication terminal; The second communication terminal is connected to communication interface circuit, is used to realize the communication service of first communication terminal.
Above-mentioned communication interface circuit comprises: the data communication interface circuit, be connected between first communication terminal and the second communication terminal, and be used to realize the data communication between first communication terminal and the second communication terminal; The communication commutation circuit is used for the communication service of first communication terminal is switched between first communication terminal and second communication terminal.
Above-mentioned data communication interface circuit is the general-purpose serial bus USB interface.
Above-mentioned communication commutation circuit comprises: control circuit, be used for when first communication terminal is connected with the second communication terminal, and produce low level signal; And when first communication terminal is not connected with the second communication terminal, produce high level signal; Analog switch is used under the triggering of low level signal, and the communication service of first communication terminal is switched to the second communication terminal; And under the triggering of high level signal, the communication service of first communication terminal is switched to first communication terminal.
Above-mentioned communication interface circuit comprises: charging circuit, link to each other with first power supply circuits of first communication terminal and second power supply circuits at second communication terminal, and being used for through second power supply circuits is power supply of first power supply circuits and/or charging.
Above-mentioned first communication terminal is a mobile phone, and the second communication terminal is a base.
Above-mentioned communication interface circuit is two, is arranged at first communication terminal side and second communication end side respectively, and two communication interface circuits cooperatively interact.
Pass through the utility model; Be employed in the technological means that the communication service that will utilize said first communication terminal of communication interface circuit that is provided with between the communication terminal switches to the second communication terminal; Solved in the correlation technique; Still do not have the problem of the power consumption that effectively reduces communication terminal, and then reached under the prerequisite that is not influencing the proper communication business, reduce the effect of communication terminal power consumption.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the communication system of the utility model embodiment;
Fig. 2 is the structural representation according to the communication system of the utility model preferred embodiment;
Fig. 3 is the structural representation according to the communication system of the utility model embodiment 1;
Fig. 4 is the communication system architecture sketch map according to the utility model embodiment 2;
Fig. 5 a is the circuit diagram according to the mobile phone side communication interface circuit of the utility model embodiment 3;
Fig. 5 b is according to the communication interface circuit of the mobile phone side of the utility model embodiment 3 and the interface circuit sketch map of other end side;
Fig. 5 c is the circuit diagram according to the communication interface circuit of other end side of the utility model embodiment 3.
Embodiment
Hereinafter will and combine embodiment to specify the utility model with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 1 is the structured flowchart according to the communication system of the utility model embodiment.As shown in Figure 1.This system comprises:
First communication terminal 10;
Communication interface circuit 12 is connected to first communication terminal 10, is used for the communication service of first communication terminal 10 is switched to second communication terminal 14;
Second communication terminal 14 is connected to communication interface circuit 12, is used to realize the communication service of first communication terminal 10.
The foregoing description; Owing to can the communication service (for example voice calling service) of first communication terminal (for example mobile phone) be switched to the second communication terminal through communication interface circuit; Accomplish the communication service of first communication terminal by the second communication terminal, therefore, can be with the power consumption that reduces by first communication terminal; Simultaneously, do not influence the proper communication business.
In a preferred embodiment of the utility model, as shown in Figure 2, above-mentioned communication interface circuit 12 comprises:
Data communication interface circuit 120; Be connected between first communication terminal 10 and the second communication terminal 14; Be used to realize the data communication between first communication terminal 12 and the second communication terminal 14, like this, just can realize the file-sharing between first communication terminal and the second communication terminal; For example, can share the address list, multimedia file etc. of first communication terminal.
Communication commutation circuit 122 is used for the communication service of first communication terminal 10 is switched between first communication terminal 10 and second communication terminal 14.
Preferably, above-mentioned data communication interface circuit 120 is USB (USB) interface.Adopt the USB technology comparatively simple, be convenient to application.
Preferably, as shown in Figure 2, above-mentioned communication commutation circuit 122 comprises: control circuit 1220, be used for when first communication terminal 10 is connected with second communication terminal 14, and produce low level signal; And when first communication terminal 10 is not connected with second communication terminal 14, produce high level signal; Analog switch 1222 is used under the triggering of low level signal, and the communication service of first communication terminal 10 is switched to second communication terminal 14; And under the triggering of high level signal, the communication service of first communication terminal 10 is switched to first communication terminal 10.Like this, just, can realize controlling the switching of communication service between first communication terminal and second communication terminal of first communication terminal according to the height of level signal.
Preferably; As shown in Figure 2, above-mentioned communication interface circuit comprises: charging circuit 124; Link to each other with first power supply circuits of first communication terminal 10 and second power supply circuits at second communication terminal 14, being used for through second power supply circuits is power supply of first power supply circuits and/or charging.Like this, in the power consumption of saving first communication terminal,, can more effectively prolong the cruising time of first communication terminal owing to can be power supply of first power supply circuits and/or charging through second power supply circuits.
In an embodiment of the utility model, when above-mentioned first communication terminal 10 is mobile phone, because mobile phone communication can bring radiation to human body; Therefore; Above-mentioned second communication terminal 12 can base or wireless fixed telephone, like this, can effectively reduce the radiation of mobile phone communication to human body.Certainly, under the situation of not considering radiation factor, above-mentioned second communication terminal also can be mobile phone.
In the specific implementation; Above-mentioned communication interface circuit 12 can be two; Be arranged at first communication terminal, 10 sides and second communication terminal 14 sides respectively, two communication interface circuits 12 cooperatively interact, and the communication service of first communication terminal 10 is switched to second communication terminal 14.Like this, expanded the application mode of communication interface circuit.
In order to understand the foregoing description better, specify below in conjunction with relevant drawings and specific embodiment.Need to prove that the communication function that following examples are involved includes but not limited to communication service.
Embodiment 1
Before introducing present embodiment; Need to prove; In the present embodiment; User mobile phone is equivalent to first communication terminal 10 in the foregoing description, and other communication terminals are equivalent to the second communication terminal 14 in the foregoing description, and the interface transmission circuit is equivalent to the communication interface circuit 12 in the foregoing description.
In the present embodiment, the communication function (business) of mobile phone is guided to outside the mobile phone through certain interface, to reduce mobile telephone power consumption and to reduce its radiation the user.
For realizing above-mentioned purpose, present embodiment provides a kind of mobile phone of easy realization and the wireline interface scheme that other communication terminals carry out communication.Through this scheme; The user can be moved to the communication function of own mobile phone and is attached thereto in other communication equipments (like fixed station, base etc.); The communication function of the hardware resource of user through using above-mentioned communication equipment (like receiver, microphone, loudspeaker, display screen, and power supply and telecommunication circuit etc.) realization mobile phone.
Particularly, as shown in Figure 3, the communication system of present embodiment comprises:
User mobile phone 30 (being equivalent to first communication terminal 10); Can be functional mobile phone or smart mobile phone; Mobile phone is according to self selecting the different of chipset scheme and SIM for use; Can be to support different communication standards, insert (Time Division-Synchronous Code Division Multiple Access like global mobile communication (Global system for Mobile Communication abbreviates GSM as), TD SDMA; Abbreviate TD-SCDMA as), WCDMA inserts (Wideband Code Division Multiple Access; Abbreviate WCDMA as), code division multiple access inserts 2000 (Code Division Multiple Access 2000 abbreviates CDMA2000 as), personal handset system (Personal Handyphone System abbreviates PHS as) etc.;
Interface transmission circuit 32 (being equivalent to communication interface circuit 12) respectively disposes a socket transmission circuit in above-mentioned mobile phone side and other-end side, is used to realize the signal transmitting and receiving between the corresponding communication standard, and the function that this interface transmission circuit 32 is accomplished comprises:
Power supply circuits comprise that the mobile phone side utilizes this circuit to realize battery charge, comprise that also the other-end side utilizes this circuit to realize externally power supply;
Data connecting interface (being equivalent to data communication interface circuit 120) can adopt USB or other bus connecting modes, at the file-sharing of accomplishing mobile phone and other-end whenever necessary (like address list, multimedia file etc.);
SIM signal switching circuit (commutation circuit 122 is equivalent to communicate by letter); Switch the SIM path of above-mentioned mobile phone side and other-end side, realize that the SIM signal is shared, when not using this interface circuit to connect; Mobile phone uses the SIM signal of self to realize communicating by letter respectively with other-end; When using this interface circuit to connect, the two all can not visit the SIM of self, but is visited the SIM of above-mentioned mobile phone by above-mentioned terminal equipment through interface;
Special purpose interface 34; Can be contained in the above-mentioned interface transmission circuit 32; Can export following signal through this special purpose interface: power supply signal, usb signal, SIM signal and control signal, realize that above-mentioned mobile phone is connected with the communication of terminal equipment, physically; Can adopt the mode of data wire to connect, also can adopt modes such as master-slave seat is direct-connected to connect.
Other communication terminals 36 (being equivalent to second communication terminal 14) can be terminal equipments such as fixed station or base, to carry out communication with user mobile phone described in the A; General requirement and mobile phone support are with a kind of communication standard, like GSM, TD-SCDMA, WCDMA etc., in addition; This type of communication terminal has receiver, microphone, loudspeaker, display screen, power supply and telecommunication circuit; Wherein receiver, microphone, loudspeaker can be used for realizing voice call, and display screen can be used for incoming call, note, mail demonstration etc., and power supply is supplied power for each circuit of this machine also can realize battery charge; Telecommunication circuit both can be a radio frequency communications circuitry (support of wireless communication pattern; Like GSM, TD-SCDMA, WCDMA etc.), also can be wire communication circuit (support the wire communication pattern, as landline telephone etc.).
Adopt the said technical scheme of present embodiment; As the user with above-mentioned mobile phone with after other-end equipment is connected through special purpose interface and interface transmission circuit, mobile phone communication close function gets into charged state; Other-end equipment is shared the SIM signal of mobile phone after connection simultaneously; The user can use resource such as the receiver, microphone, display screen of other-end to communicate, and can reduce the radiation that mobile phone communication brings on the one hand, can prolong the cruising time of mobile phone on the other hand.
Embodiment 2
In the present embodiment; For the above-mentioned other-end equipment 34 of not supporting SIM,, can adopt the way of realization shown in accompanying drawing 4 like base; Can in special purpose interface 34, comprise power supply signal, usb signal and audio signal; Correspondingly, both sides' interface transmission circuit 32 can be realized base to the usb data communication between cell-phone charging, base and the mobile phone, can the speech frequency signal that send, receives of mobile phone be switched in the base simultaneously; In such cases, the user can use the resources such as receiver, Mike of base to realize voice call function.For external power source being arranged, the base of dot matrix display screen being arranged; The user can realize the charging to mobile phone through power supply signal; Realize file-sharing through the usb signal interface,, also can omit above-mentioned power supply or usb signal interface for the base that does not have external power source or dot matrix display screen.In this kind way of realization; Mobile phone communication or to receive and send messages be that radio frequency and voicefrequency circuit through the mobile phone side realized; But owing to use the resources such as receiver, Mike, power supply and display screen of base, can reduce the radiation that mobile phone communication brings equally, and prolong mobile phone cruising time.
Embodiment 3
Below in conjunction with specific embodiment above scheme is described; With being connected for example of a mobile phone and fixed station (being wireless fixed telephone); The communication interface circuit of present embodiment, comprise mobile phone side interface circuit (Fig. 5 a), fixed station side interface circuit (Fig. 5 c) and interface line relation (Fig. 5 b) three parts.
Shown in Fig. 5 a, mobile phone side interface circuit comprises following components:
Charging and usb data interface; Comprise VBUS, USB_D-, USB_D+, USB_ID, also comprise earth signal (GND) simultaneously, wherein VBUS is used to receive the power supply from fixed station; Carry out charging mobile phone battery, USB_D-, USB_D+, USB_ID can be used for carrying out usb communication with fixed station;
SIM interface and SIM commutation circuit, SIM interface signal comprise SIM_VCC, SIM_CLK, SIM_DATA, four holding wires of SIM_RST, and the SIM commutation circuit comprises an analog switch S and peripheral circuit thereof; Also comprise an external interface control signal FLAG simultaneously; The switching of the above-mentioned analog switch of this signal controlling, when FLAG=H, SIM links to each other with mobile phone B B; When FLAG=L, the SIM signal is switched on the external interface.
When mobile phone was not connected to fixed station, FLAG was high level under pull-up resistor uses, and the SIM signal is switched to mobile phone baseband control side (BB side) by analog switch S, and the user can normally use mobile phone; When mobile phone is connected with fixed station; Because the FLAG signal is pulled to GND in the interface line, so FLAG=L, the SIM signal is switched to interface side; Can communicate by letter with fixed station; Simultaneously, USB also can link to each other with the corresponding signal of fixed station through interface with charging inlet, realizes USB charging and data communication.
Shown in Fig. 5 c, fixed station side interface circuit comprises following components:
Charging and usb data interface comprise VBUS, USB_D-, USB_D+, USB_ID, also comprise earth signal (GND) simultaneously, and wherein VBUS is used for realizing the charging to mobile phone to the mobile phone power supply, and USB_D-, USB_D+, USB_ID are used for carrying out usb communication with mobile phone;
SIM interface and SIM commutation circuit, SIM interface signal comprise SIM_VCC, SIM_CLK, SIM_DATA, four holding wires of SIM_RST, and the SIM commutation circuit comprises an analog switch S and peripheral circuit thereof; Also comprise an external interface control signal FLAG simultaneously; The switching of the above-mentioned analog switch of this signal controlling, when FLAG=H, SIM links to each other with fixed station BB; When FLAG=L, the SIM signal is switched on the external interface.
When fixed station was not connected with mobile phone, FLAG was high level under pull-up resistor uses, and the SIM signal is switched to fixed station BB side by analog switch S, and the user can normally use mobile phone; When mobile phone is connected with fixed station; Because the FLAG signal is pulled to GND in the interface line, so FLAG=L, the SIM signal is switched to interface side; Can be connected with the SIM cards of mobile phones signal; Simultaneously, USB also can link to each other with mobile phone side corresponding signal through interface with charging inlet, realizes USB charging and data communication.
Above-mentioned two interfaces can connect through dedicated data line, and the annexation of data wire is shown in Fig. 5 b, and this data wire also is shorted to GND with the FLAG signal except guaranteeing that two equipment interconnect, and after holding wire connects, realize the switching of SIM signal.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.

Claims (7)

1. a communication system is characterized in that, comprising:
First communication terminal;
Communication interface circuit is connected to said first communication terminal, is used for the communication service of said first communication terminal is switched to the second communication terminal;
Said second communication terminal is connected to said communication interface circuit, is used to realize the communication service of said first communication terminal.
2. system according to claim 1 is characterized in that, said communication interface circuit comprises:
The data communication interface circuit is connected between said first communication terminal and the said second communication terminal, is used to realize the data communication between said first communication terminal and the said second communication terminal;
The communication commutation circuit is used for the communication service of said first communication terminal is switched between said first communication terminal and said second communication terminal.
3. system according to claim 2 is characterized in that, said data communication interface circuit is the general-purpose serial bus USB interface.
4. system according to claim 1 is characterized in that, said communication commutation circuit comprises:
Control circuit is used for when said first communication terminal is connected with said second communication terminal, produces low level signal; And when said first communication terminal is not connected with said second communication terminal, produce high level signal;
Analog switch is used under the triggering of said low level signal, and the communication service of said first communication terminal is switched to said second communication terminal; And under the triggering of said high level signal, the communication service of said first communication terminal is switched to said first communication terminal.
5. according to each described system of claim 1 to 4, it is characterized in that said communication interface circuit comprises:
Charging circuit links to each other with first power supply circuits of said first communication terminal and second power supply circuits at said second communication terminal, and being used for through said second power supply circuits is said first power supply circuits power supply and/or charging.
6. according to each described system of claim 1 to 4, it is characterized in that,
Said first communication terminal is a mobile phone, and said second communication terminal is a base.
7. according to each described system of claim 1 to 4, it is characterized in that said communication interface circuit is two, be arranged at said first communication terminal side and said second communication end side respectively, two said communication interface circuits cooperatively interact.
CN201120319113XU 2011-08-29 2011-08-29 Communication system Expired - Fee Related CN202222017U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201120319113XU CN202222017U (en) 2011-08-29 2011-08-29 Communication system
PCT/CN2012/075462 WO2013029391A1 (en) 2011-08-29 2012-05-14 Communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120319113XU CN202222017U (en) 2011-08-29 2011-08-29 Communication system

Publications (1)

Publication Number Publication Date
CN202222017U true CN202222017U (en) 2012-05-16

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Application Number Title Priority Date Filing Date
CN201120319113XU Expired - Fee Related CN202222017U (en) 2011-08-29 2011-08-29 Communication system

Country Status (2)

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CN (1) CN202222017U (en)
WO (1) WO2013029391A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104660492A (en) * 2015-01-27 2015-05-27 惠州Tcl移动通信有限公司 Mail synchronization method and system based on intelligent equipment and function machine
CN105915603A (en) * 2016-04-14 2016-08-31 北京小米移动软件有限公司 File management method and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101272572A (en) * 2008-04-30 2008-09-24 电子科技大学 Mobile communication apparatus
CN201910827U (en) * 2010-11-12 2011-07-27 深圳市天讯龙软件技术有限公司 Double-network wireless parent-subsidiary telephone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104660492A (en) * 2015-01-27 2015-05-27 惠州Tcl移动通信有限公司 Mail synchronization method and system based on intelligent equipment and function machine
CN104660492B (en) * 2015-01-27 2019-06-25 惠州Tcl移动通信有限公司 Mail synchronization method and system based on smart machine and function machine
CN105915603A (en) * 2016-04-14 2016-08-31 北京小米移动软件有限公司 File management method and apparatus
CN105915603B (en) * 2016-04-14 2019-09-10 北京小米移动软件有限公司 File management method and device

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Granted publication date: 20120516

Termination date: 20160829