CN1067825C - Prepayment account card type public telephone - Google Patents
Prepayment account card type public telephone Download PDFInfo
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- CN1067825C CN1067825C CN98114096A CN98114096A CN1067825C CN 1067825 C CN1067825 C CN 1067825C CN 98114096 A CN98114096 A CN 98114096A CN 98114096 A CN98114096 A CN 98114096A CN 1067825 C CN1067825 C CN 1067825C
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- control circuit
- public telephone
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Abstract
The present invention relates to a public telephone of an account number card type, which comprises a card and a special telephone, and a telephone circuit, a digital circuit and novel IC card technology are adopted. The present invention is characterized in that a program stored in a microprocessor controls the initializing operation, the card judging and data reading operation, the data format distinguishing operation and the data transmitting operation of each component in the telephone by a control circuit, the telephone circuit and an IC card interface circuit, and an automatic dialling state is started by the control circuit so as to start the telephone circuit and realize the automation of an off-hook operation, a card reading operation and dual audio code transmission by a simulated keyboard. The service ranges of password accounting telephone services such as 200, 300, 201, 206, etc. are expanded by the telephone so as to enhance the utilization rate of equipment and reduce equipment investment in public telephone development.
Description
The present invention relates to telephone set, particularly relate to a kind of prepayment account card type unguarded public telephone machine that aims at the account number platform configuration.
The public words of the unattended operation of China mainly are made up of card phone, IC Card Telephone and coin telephone at present, and account number formula phone is owing to phone technical problem partly is not employed always.The subject matter that exists has: limit dial function be difficult to realize or be not easy to change, do not have network management function, poor stability, dialing be cumbersome.
Early stage, account number formula platform mainly solved long-distance service, 200 platforms for example, the user opens an account in post and telecommunications office's payment, available common phone is hung long-distance, but needs hand to dial office direction number, account number, about 15 items of total at every turn, and be only limited to long-distance, the call business of not reopening after a cessation of business.Stored-program control exchange is popularized at present, and it is long-distance that all phones can be hung, and this platform has not just had special value like this.This platform device investment is big, as not opening up unmanned general phone service, such professional committee is contracted, and the equipment of having invested is underutilized, and causes the wasting of resources.
The purpose of this invention is to provide a kind of register communication service of password design that aims at, with the prepayment account card type public telephone of IC-card input account number.Have accurate, shortcut function, long-distance call, local telephone network all are suitable for.
Prepayment account card type public telephone comprises card and dedicated telephone set two parts, adopt telephone circuit, digital circuit and emerging IC-card technology, it is characterized in that: phone is respectively by control circuit, telephone circuit and IC-card interface circuit are formed, see theory diagram 4, by there being the IC-card of office direction number and account number, IC-card interface circuit in the access machine, be provided with initialization among the CPU, declare the card read data, differentiate data format, send data program, send double audio code by simulating keyboard, enter automatic dialing status by control circuit, start telephone circuit, realize off-hook, Card Reader, simulating keyboard sends the automation of double audio code.
This machine is to utilize IC-card to store office direction number and account number, forms automatic dialing by Card Reader mechanism in the machine and corresponding management software, and it is loaded down with trivial details to have solved dialing, the problem of makeing mistakes easily.This eedle has been expanded the scope of business to the register telephone services of password such as 200,300,201,206, improves utilization rate of equipment and installations, reduces the public equipment investment expense in the exhibition of having talked about, for the facility basis is established in the development of the public affairs words cause of accelerating China.The IC-card of succeeding in developing that utilizes carries out automatic telephone dial technology and dedicated telephone set, has filled up this blank in the public words of the telecommunications industry field.
Fig. 1 is keyboard analog circuit figure.
Fig. 2 is an IC-card card reading interface circuit diagram.
Fig. 3 is control circuit figure
Fig. 4 is the operation principle block diagram
Fig. 5 is the CPU software flow pattern
Embodiment:
This prepayment account card type public telephone comprises IC-card and the telephone set that card plug is arranged, and its circuit is made up of control circuit, telephone circuit and IC-card interface circuit respectively; By there being the IC-card of office direction number and number of the account, the IC-card interface circuit in the access machine is by being provided with initialization, Card Reader, declaring the microprocessor domination of card program, send double audio code start-up control circuit by simulating keyboard, enter automatic dialing status, start telephone circuit
Realize that off-hook, Card Reader, simulating keyboard send the automation of double audio code, the user only needs to dial in password by hand and can call.
Control circuit has single-chip microcomputer, digital interface circuit, and double-tone is receiving circuit frequently, data storage circuitry and watchdog circuit, power circuit.Digital interface integrated circuit U4 wherein, U5, U6 links to each other with single chip circuit U3 by data/address bus.The composition of telephone circuit: ringing circuit, dial-up circuit, speaking circuit.The composition of IC-card interface circuit: power control circuit, the IC-card control circuit, electrostatic discharge protection circuit, the IC-card socket reaches the junction block P1 that joins with it, sees Fig. 2; Utilize P1 (8PIN) connector to be connected with the IC-card deck, utilize 11 diodes (D08-D18) to form the electrostatic discharge protection circuit of IC-card interface, damage other circuit of phone inside with the high-pressure electrostatic of avoiding entering by the IC-card interface, resistance R 2 one ends and VCC (+5V) link to each other and use as pull-up resistor, when card does not insert, holding wire ICP is a low level, and holding wire ICP is a high level when having card to insert; Resistance R 13, R12 and triode Q4, Q5 form the IC-card power control circuit, when holding wire CS3 is high level, is IC-card power supply is provided, and when holding wire CS3 is low level, promptly cut off the IC-card power supply; Resistance R 3-R7 is the current-limiting resistance on the IC-card holding wire, can protect five interface lines of integrated circuit 89C51 owing to overcurrent it to be damaged; Five interface lines of integrated circuit 89C51 are respectively P1.3 with the annexation of IC-card holding wire and link to each other with RST with CLK, P1.7 with T, P1.6 with I/O, P1.5.
Fig. 1 is a keyboard analog dialup circuit.Voltage-stabiliser tube Z1-Z7 and diode D1-D7 form the level shifting circuit of interface line and dial-up circuit, crystal CY1 and two capacitor C 1, C2 provide reference frequency for dial-up circuit, one end ground connection of resistance R 31, but be used for selecting dialing to be the signaling working method, any two in interface line JC1-JC3 and JR1-JR4 is low level, all the other remain when level 14 pin of dial-up circuit U1 and will export-double-audio signal, interface line JC1-JC3 and JR1-JR4 are combined respectively, and the numbers and symbols on the corresponding keyboard is as follows:
| JC1 | JC2 | JC3 | |
| JR1 | 1 | 2 | 3 |
| JR2 | 4 | 5 | 6 |
| JR3 | 7 | 8 | 9 |
| JR4 | * | 0 | # |
Program deposits in the CPU, after circuit powers on, and cpu reset, internal processes brings into operation, and sees Fig. 5.
(1), initialization is referring to Fig. 3, CPU at first is provided with the required initial condition value of circuit working to each interface chip.Interface line P3.4 zero clearing after U2 is chosen in interface line P3.5 set, by interface line A8-A13 output, is set the delivery outlet line states of integrated circuit U2.When the delivery outlet line 1CS of U2 when low level becomes high level, integrated circuit U4 is selected, the input by lead-in wire AD0-AD5 is with the delivery outlet line JC1-JC3 of integrated circuit U4, JR3-JR4 is changed to low level.In like manner, choose integrated circuit U5 again, JR1-JR2 is changed to low level with interface line, and at this moment the phone keyboard is forbidden input.
(2), declare card
After egress line CS4 by integrated circuit U2 chooses integrated circuit U6, see Fig. 3, read the state of integrated circuit U6 output line ICP, when output line ICP was low level, then plug-in card not in the deck when output line ICP is high level, had card in the deck.
(3), read data
When CPU judges when having card to exist, read data on the IC-card according to IC-card communications protocol " IS07816-3 " by the P1 mouth.
(4), differentiate data format
Data format in the IC-card is:
Office direction number (3), account number (10-12 position), designing this program has three circulations.
(5), bad card
When the data format in the IC-card is incorrect, be judged to be bad card.
(6) send data
When the data format in the IC-card was correct, CPU was by integrated circuit U4, and the U5 simulating keyboard sends data, and U1 is converted to double-audio signal through integrated circuit, and dial-up program finishes automatically.
In the present embodiment, integrated circuit U1 is U91330A, and integrated circuit U2, U4 and U5 are CC40174, and integrated circuit U3 is 89C512, and integrated circuit U6 is CC4603.
Claims (2)
1. prepayment account card type public telephone, comprise IC-card, telephone set, it is characterized in that having in the described IC-card office direction number and usersaccount information, described telephone set comprises: control circuit, telephone circuit and IC-card interface circuit, control circuit is connected with the IC-card interface circuit with telephone circuit respectively, be used for the control IC card interface circuit, read the office direction of storing in the IC-card number and account number, realize dialing automatically office direction number, account number by telephone circuit, make telephone set and upper end account number business platform be in on-state.
2. the described prepayment account card type public telephone of claim 1, it is characterized in that: described control circuit comprises single-chip microcomputer (U3), digital interface circuit (U2, U4, U5, U6), double-tone is receiving circuit (U7) frequently, data-storing circuit (U8), watchdog circuit and power circuit, single-chip microcomputer are connected with described digital interface circuit respectively; Described IC-card interface circuit comprises power control circuit, IC-card control circuit, electrostatic discharge protection circuit, IC-card socket and the junction block (P1) that links to each other; Described electrostatic discharge protection circuit is connected between described power control circuit and the described junction block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98114096A CN1067825C (en) | 1998-06-22 | 1998-06-22 | Prepayment account card type public telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98114096A CN1067825C (en) | 1998-06-22 | 1998-06-22 | Prepayment account card type public telephone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1206977A CN1206977A (en) | 1999-02-03 |
| CN1067825C true CN1067825C (en) | 2001-06-27 |
Family
ID=5223775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98114096A Expired - Fee Related CN1067825C (en) | 1998-06-22 | 1998-06-22 | Prepayment account card type public telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1067825C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433676C (en) * | 2003-09-28 | 2008-11-12 | 乐映钢 | Method for directional dialing for programme controlled exchange board |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000947A1 (en) * | 1992-06-19 | 1994-01-06 | Korea Telecommunication Authority | Coin/card operated public telephone and its controlling method |
| CN1170293A (en) * | 1996-07-08 | 1998-01-14 | 淄博新星电子集团公司 | IC card controlled telephone |
| CN2275736Y (en) * | 1996-11-08 | 1998-03-04 | 高�玉 | IC prepayment telephone card reader |
-
1998
- 1998-06-22 CN CN98114096A patent/CN1067825C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000947A1 (en) * | 1992-06-19 | 1994-01-06 | Korea Telecommunication Authority | Coin/card operated public telephone and its controlling method |
| CN1170293A (en) * | 1996-07-08 | 1998-01-14 | 淄博新星电子集团公司 | IC card controlled telephone |
| CN2275736Y (en) * | 1996-11-08 | 1998-03-04 | 高�玉 | IC prepayment telephone card reader |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1206977A (en) | 1999-02-03 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Applicant after: Lianyou Communication Co, Shenyang Applicant before: Lianyou New Technology Development Co., Shenyang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: LIANYOU NEW TECHNOLOGY DEVELOPMENT CO., SHENYANG TO: SHENYANG CITY LIANYOU COMMUNICATION CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |