CN205249283U - Can be used to public telephone machine that inside and outside SIM card switches - Google Patents

Abstract

The embodiment of the utility model discloses the switching method of public telephone machine and inside and outside SIM card, this telephone include host system, wireless communication module, analog switch, inside SIM card module, outside SIM card draw -in groove and brush card reader module, host system is used for closing wireless communication module when having outside SIM card to insert outside SIM card draw -in groove to make wireless communication module and outside SIM card signal switch on restart wireless communication module through analog switch, a switch on that is used for acquireing when operation of punching the card at brush card reader module, control wireless communication module keeps the acquiescence state with inside SIM card signal under .the embodiment of the utility model provides a compatible plug -in card mode and the mode of punching the card to through host system's monitoring and analog switch's switching, can be between inside SIM card and outside SIM card accurate, quick switching, reduced user's latency.

Description

A kind of public telephone set that can be used for inside and outside SIM switching

Technical field

The utility model relates to communication technical field, particularly relates to one and can be used for inside and outside SIMThe public telephone set switching.

Background technology

Public telephone set, from early stage coin-feed, is developed to general card insert type or card-scanning type at present,It has been a kind of communication equipment of calling, receiving and dispatching the several functions such as note that has. Card insert type public affairsRefer to that with telephone set user inserts outside SIM and uses public telephone set, card-scanning type public telephoneMachine refers to that user is by swiping the card to use the inside SIM of public telephone set. But, existing publicTelephone set or only support plug-in card mode, or only support the mode of swiping the card, can not meet plug-in card simultaneouslyUser and the user that swipes the card.

Utility model content

The technical problem that the utility model mainly solves be to provide one can compatible plug-in card mode withThe public telephone set of the mode of swiping the card.

The utility model embodiment provides a kind of public telephone set, this telephone set comprise main control module,Wireless communication module, analog switch, inner SIM module, outside SIM draw-in groove andThe module for reading and writing of swiping the card;

Main control module, in the time having outside SIM to insert outside SIM draw-in groove, is closed wirelessCommunication module, and make wireless communication module and outside SIM signal conduction by analog switch, thenStart wireless communication module; When swipe the card operation for getting at the module for reading and writing of swiping the card, control wirelessCommunication module and inner SIM signal keep the conducting under default conditions.

Wherein, inner SIM module is connected with analog switch respectively with outside SIM draw-in groove;Analog switch is connected with wireless communication module; Wireless communication module, analog switch, outside SIMDraw-in groove and the module for reading and writing of swiping the card are connected with main control module respectively.

Wherein, outside SIM draw-in groove comprises the first pin, and the first pin connects the of main control moduleTwo pins; In the time inserting outside SIM draw-in groove without outside SIM, the second pin is in high electricityLevel state; In the time having outside SIM to insert outside SIM draw-in groove, the second pin is drawn by firstPin is pulled to low level state, and main control module is determined with outside SIM and inserts outside SIM draw-in groove.

Wherein, the module for reading and writing of swiping the card comprises 13.56MHZ read-write chip, in the time swiping the card operation,The value of the corresponding register of this chip changes; Main control module is getting posting that this changesOperation has been judged to be to swipe the card when the value of storage.

Wherein, main control module, by sending high-level control signal to analog switch, makes radio communicationModule and inner SIM signal keep the conducting under default conditions; Main control module is by opening to simulationLow level control signal is sent in pass, makes wireless communication module and outside SIM signal conduction.

Compared with prior art, the utility model embodiment comprises following beneficial effect:

In the utility model embodiment, if user's use is the mode of swiping the card, due to default conditionsLower use be exactly inner SIM signal and wireless communication module conducting, so can directly useInner SIM carries out subsequent operation; If what user used is plug-in card mode, first close wirelessCommunication module, then makes outside SIM signal and wireless communication module conducting, restarts afterwards nothingLine communication module, and use outside SIM to carry out subsequent operation. The public telephone set of the present embodimentCompatible plug-in card mode with swipe the card mode, can be between inner SIM and outside SIM standardReally, switch fast, reduced stand-by period of user.

Brief description of the drawings

Fig. 1 is the structured flowchart of an embodiment of public telephone set in the utility model embodiment;

Detailed description of the invention

Below in conjunction with drawings and embodiments, the utility model embodiment is elaborated.

Embodiment mono-

Refer to Fig. 1, Fig. 1 is an embodiment of public telephone set in the utility model embodimentStructured flowchart. As shown in Figure 1, in the present embodiment, public telephone set 100 comprises main control module110, wireless communication module 120, analog switch 130, inner SIM module 140, outside SIMCard draw-in groove 150 and the module for reading and writing 160 of swiping the card. Inner SIM module 140 comprises inner SIMBlock deck and be arranged on the inside SIM on this deck. Inner SIM module 140 and outsideSIM draw-in groove 150 is connected with analog switch 130 respectively. Analog switch 130 and radio communication moldPiece 120 connects. Wireless communication module 120, analog switch 130, outside SIM draw-in groove 150,And the module for reading and writing 160 of swiping the card is connected with main control module 110 respectively.

Main control module 110 is in the time having outside SIM to insert outside SIM draw-in groove 150,Close wireless communication module 120, and make wireless communication module 120 with outer by analog switch 130The signal conduction of portion's SIM, restarts wireless communication module 120.

Specific implementation can be, outside SIM draw-in groove 150 comprises the first pin, and this is first years oldPin connects the second pin of main control module 110. When inserting outside SIM without outside SIMWhen draw-in groove 150, the second pin of main control module 110 is in high level state. When there being outside SIMWhen card inserts outside SIM draw-in groove 150, the first pin process of outside SIM draw-in groove 150After pull-up resistor, the second pin of main control module 110 is pulled to low level state, now master controlModule 110 is determined with outside SIM and inserts outside SIM draw-in groove 150; Main control module 110 justCan first close wireless communication module 120, more for example, send out to analog switch 130 (TS3A44159)Go out low level control signal, make SIM interface and the outside SIM of wireless communication module 120Signal conduction, restart wireless communication module 120, then carry out follow-up operation.

By default, wireless communication module 120 keeps conducting with inner SIM 140 signals.Main control module 110 also, for get when operation of swiping the card at the module for reading and writing 160 of swiping the card, is controlled wirelessCommunication module 120 keeps the conducting under default conditions with inner SIM 140 signals. Particularly,The module for reading and writing 160 of swiping the card can comprise 13.56MHZ read-write chip, when operation (this card of swiping the cardCan be 13.56MHZ radio-frequency card) time, the value of the corresponding register of this chip changes. Master controlModule 110 operation that has been judged to be to swipe the card in the time getting the value of this register changing, master controlModule 110 can not sent low level control signal to analog switch 130, and the control signal of sending stillThe high-level control signal under default conditions, the SIM interface that makes wireless communication module with inThe signal of portion's SIM keeps conducting, carries out follow-up operation.

Main control module 110 can be sent out card seeking instruction to 13.56MHZ read-write chip always and obtain thisThe value of chip register, also can be by 13.56MHZ read-write chip always initiatively to main control module 110Report the value of its register.

In the present embodiment, if user uses is the mode of swiping the card, owing to using under default conditionsBe exactly inner SIM signal and wireless communication module conducting, so main control module can directly be controlledInner SIM carries out subsequent operation; If what user used is plug-in card mode, main control module meetingFirst close wireless communication module, then make outside SIM signal and radio communication by analog switchModule conducting, restarts wireless communication module afterwards, and controls outside SIM and carry out subsequent operation.The public telephone set compatibility of the present embodiment plug-in card mode and the mode of swiping the card, and pass through main control moduleMonitoring and the switching of analog switch, can be between inner SIM and outside SIM accurateReally, switch fast, reduced stand-by period of user.

The foregoing is only embodiment of the present utility model, not thereby limit of the present utility modelThe scope of the claims, every utilize equivalent structure that the utility model description and accompanying drawing content do or etc.The conversion of effect flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included inIn scope of patent protection of the present utility model.

Claims (4)

1. can be used for the public telephone set that inside and outside SIM switches, it is characterized in that, comprise main control module, wireless communication module, analog switch, inner SIM module, outside SIM draw-in groove and the module for reading and writing of swiping the card;

Described inner SIM module is connected with described analog switch respectively with described outside SIM draw-in groove; Described analog switch is connected with described wireless communication module; Described wireless communication module, analog switch, outside SIM draw-in groove and the module for reading and writing of swiping the card are connected with described main control module respectively.

2. the public telephone set that can be used for inside and outside SIM switching according to claim 1, is characterized in that, described outside SIM draw-in groove comprises the first pin, and the first pin connects the second pin of described main control module;

In the time inserting described outside SIM draw-in groove without outside SIM, the second pin is in high level state; In the time having outside SIM to insert described outside SIM draw-in groove, the second pin is pulled to low level state by the first pin, and described main control module is determined with outside SIM and inserts described outside SIM draw-in groove.

3. according to claim 1ly can be used for the public telephone set that inside and outside SIM switches, it is characterized in that, described in the module for reading and writing of swiping the card comprise 13.56MHZ read-write chip, in the time swiping the card operation, the value of the corresponding register of this chip changes; The operation that has been judged to be to swipe the card in the time getting the value of this register changing of described main control module.

4. the public telephone set that can be used for inside and outside SIM switching according to claim 1, it is characterized in that, described main control module, by sending high-level control signal to described analog switch, makes described wireless communication module and described inner SIM signal keep the conducting under default conditions; Described main control module, by sending low level control signal to described analog switch, makes described wireless communication module and described outside SIM signal conduction.