CN2221844Y - Intelligent telephone set with cipher card - Google Patents

Abstract

The utility model relates to an intelligent telephone set with a cipher card, belonging to the technical field of communication. The utility model is composed of a telephone circuit, an electronic switch, a dial, a single-chip computer, a cipher card interpretation circuit, etc. The utility model is characterized in that the telephone set can set dialing limitation numbers which are stored into a memory; when a user dials the dialing limitation numbers, the single-chip computer can read the cipher on the cipher card and control the electronic switch via the telephone circuit to emit the dialed numbers through the cipher card interpretation circuit, and meanwhile, the dialed numbers are displayed on a liquid crystal display screen; after the telephone set is hung up, the single-chip computer can automatically store the cipher, the telephone numbers and the call time into the memory. The utility model can carry out dialing limitation for any number, and can save large amount of telephone fees.

Description

The intelligent telephone set of band password card

The utility model relates to the intelligent telephone set that a kind of needs use the band password card of integrated circuit password card dail-limiting number, belongs to communication technique field.

In existing technology, the dialing of limiting telephone machine has multiple mode, the mode of the lock control of introducing as " telephone principle and maintenance " (Li Lingqi, Hu Guangcheng etc.) book and the mode of step-by-step counting, its weak point is that dail-limiting number is single, and telephone set is not suitable for as the extension set under user's stored-program control exchange.In addition, the form of electronic telephone keypad also has multiple, poke-rod type, conductive rubber and thin film switch keypad as " the electronic telephone principle is used and maintenance " (Xia Dong, Xue Honggui write) book introduction, the weak point of these keypads is to use Single-chip Controlling, can not realize automatic dialing.

The purpose of this utility model is a kind of intelligent telephone set with the password card of design, with password card dail-limiting number, make the master control unit with single-chip microcomputer and external memory chip thereof, combining cipher card interpretation circuit, electronic switch and phone are realized the telephone set intellectuality, telephone set can be limit dial arbitrary numbers, only allow the donor to use, use thereby can save a large amount of telephone chargess.

Content of the present utility model is:

The intelligent telephone set of band password card comprises telephone circuit, figure disc, electronic switch U4 and U5, buffer circuit U2 and U3, single-chip microcomputer U1, password card interpretation circuit, clock circuit, data storage, program storage and LCDs.Password card interpretation phone comprises latch U6 and password card socket Z1.Single-chip microcomputer U1 judges the plucking of telephone circuit, hook state by the pin that indicates U/D, and behind the off-hook, single-chip microcomputer reads the information of password card on the Z1 socket by the logical combination of 14,15,16 pin level of TxD, RxD and latch U6.When receiving that the number that transmits on the figure disc is after differentiating, single-chip microcomputer U1 will dial to instruct and pass to electronic switch U4 and U5 and connect corresponding electronic switch through buffer circuit U2 and U3, send corresponding number via the transmitting ic chip in pin C1, C2, C3, C4, C5, C6, R1, R2, R3, R4 and the R5 control telephone circuit then.Clock circuit, data storage, program storage and LCDs link with single-chip microcomputer U1 respectively.

Description of drawings:

Fig. 1 is a block diagram of the present utility model.

Fig. 2 is the circuit diagram of electronic switch and password card interpretation circuit.

Below in conjunction with accompanying drawing, introduce content of the present utility model in detail.

Composition such as Fig. 1 of intelligent telephone set show.Wherein telephone circuit is speaking circuit independently, and electronic switch and buffer circuit, clock circuit, password card interpretation circuit and LCDs etc. are independently telephone bill tuple, and carry out work under the monolithic computer master control.

The smart phone operation principle as shown in Figure 1.User's desire is dialled when limiting number, needs earlier the password card to be inserted deck.Monolithic computer reads information on the password card by password card interpretation circuit behind the off-hook, during number that the user is according to number coiled, monolithic computer is followed the tracks of differentiation, if during the number that institute according to number is to be authorized to use, monolithic computer by electronic switch control telephone circuit send by number, liquid crystal display screen shows this number simultaneously; If when institute according to number was unauthorized number, monolithic computer was hung up telephone set by electronic switch.After the user cried the conversation of taking on the telephone, clock circuit picked up counting, and liquid crystal display screen shows call timers.Behind the end of conversation, monolithic computer together deposits telephone number, air time, conversation date and password in data storage automatically.

Monolithic computer among Fig. 1, buffer circuit, electronic switch and password card interpretation circuit are as shown in Figure 2, among Fig. 2, U1 is a monolithic computer, and model is 8031, and U6 is a latch, model is 74573, U2, U3 are the buffer circuit chip, and model is 4504, and U4 and U5 are electronic switch, model is 2210, and Z1 is a password card socket.The pin 1-8 of U1 is an I/O mouth one, links with U2, U3 respectively.The pin 21-28 of U1 is an I/O mouth two, link with U6 respectively, 3,5,7,9 pins of U2 and U3 are signal input end, 2,4,6,10,12,15 pins of U2 and U3 are the output of control signal, 3,4,5,6 pins of U4 and U5 are the data-signal input, 2,7 pins of U4 and U5 are signal input end, and the transmitting ic chip in pin 9,1,12,13,15,10,14,11 and the telephone circuit joins, and pin 16 connects power supply.The pin 2-9 of U6 is an input, and 14,15 and 16 pins are the latch signal output.The concrete course of work is as follows: monolithic computer U1 judge by the pin that indicates U/D pluck, hook state.Behind the off-hook, monolithic computer passes through TxD, 14 of RxD and U6 latch, 15, the logical combination of 16 pin level reads the information on the Z1 socket password card, when receiving that the number that transmits on the figure disc is after differentiating, send the dialing instruction and give electronic switch, U2, give U4 behind the instruction buffer that U3 sends monolithic computer here, U5 connects corresponding electronic switch, via pin C1, C2, C3, C4, C5, C6, R1, R2, R3, transmitting ic chip in R4 and the R5 control telephone circuit sends corresponding number, so far can realize the function of the electronic switch dialing under the monolithic computer control.

Claims (1)

1. the intelligent telephone set with the password card comprises telephone circuit, figure disc, it is characterized in that this telephone set also comprises electronic switch U4 and U5, buffer circuit U2 and U3, single-chip microcomputer U1, password card interpretation circuit, clock circuit, data storage, program storage and LCDs; Described password card interpretation phone comprises latch U6 and password card socket Z1; Single-chip microcomputer U1 judges plucking of telephone circuit by the pin that indicates U/D, hook state, behind the off-hook, single-chip microcomputer passes through TxD, 14 of RxD and latch U6,15, the logical combination of 16 pin level reads the information of password card on the Z1 socket, when receiving that the number that transmits on the figure disc is after differentiating, single-chip microcomputer U1 will dial to instruct and pass to electronic switch U4 and U5 and connect corresponding electronic switch through buffer circuit U2 and U3, then via pin C1, C2, C3, C4, C5, C6, R1, R2, R3, transmitting ic chip in R4 and the R5 control telephone circuit sends corresponding number; Described clock circuit, data storage, program storage and LCDs link with single-chip microcomputer U1 respectively.

Images