CN2580703Y - Card-insertion and bar-code type public telephone equipment - Google Patents
Card-insertion and bar-code type public telephone equipment Download PDFInfo
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- CN2580703Y CN2580703Y CN 02248944 CN02248944U CN2580703Y CN 2580703 Y CN2580703 Y CN 2580703Y CN 02248944 CN02248944 CN 02248944 CN 02248944 U CN02248944 U CN 02248944U CN 2580703 Y CN2580703 Y CN 2580703Y
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Abstract
The utility model relates to a card-insertion and bar-code type public telephone equipment. The utility model is characterized in that the utility model comprises a card-insertion and bar-code type public telephone and a bar-code inserting card matched with the card-insertion and bar-code type public telephone. The telephone comprises a casing, a user terminal interface circuit in the casing, a bar-code scanning and controlling circuit and an intelligent processing circuit. The user terminal interface circuit is equivalent to a circuit of a commonly used telephone with caller ID. The intelligent processing circuit is mainly composed of a computer chip and peripheric elements thereof. The bar-code scanning and controlling circuit is mainly composed of a bar-code scanner and peripheric elements thereof. The bar-code inserting card comprises a card body matched with a card holder of the bar-code telephone and a bar-code arranged on the card body. The bar-code can be read by the bar-code scanner. The utility model has the advantages that the computer chip controls the bar-code scanner to scan the bar-code calling card, and the information represented by the bar-code is directly read to the computer chip; the hand input of the calling card information in the prior art is changed to computer automatic scanning input; the utility model is accurate, rapid and safe.
Description
Affiliated technical field
The utility model relates to a kind of Magnetic Card Telephone device, and particularly card insert type bar code public telephone device belongs to the communication equipment technical field.
Background technology
In order to solve public place telephone communication problems such as school, hospital, station, harbour, various public telephones such as IC-card public telephone, 200 telephones for special use extensively have been installed at present, have been used various phonecards such as IC-card, 200 cards, 201 cards, 300 cards, IP phonecard to provide service as the client.Wherein IC-card is flexible and convenient to use, just can dial the other side's phone as long as insert IC-card, but IC-card public telephone set cost is higher, and the IC phonecard is stored the IC chip and caused the phonecard cost higher because of including, can't for the user provide hang down face amount phonecard.200 cards wait other several phonecards, make with plastics or paper, with low cost, but before dialling the other side's telephone number, must dial card number, account number, password etc. earlier, and these sign indicating numbers are added up tens at least, twenties at most, memory difficulty, dial loaded down with trivial details, in case dial the wrong number or subscriber engaged, just need redial, use very inconvenient.
Technology contents
The utility model technical issues that need to address provide a kind of card insert type bar code public telephone device, use card insert type bar code public telephone device, and existing IC-card public telephone flexible has the expect someone's call characteristics with low cost of card of 200 cards again.
Technical problem of the present utility model reaches by following technical measures: card insert type bar code public telephone device, comprise bar code telephone set and plug-in card, telephone set comprises shell and is built in the interior user side interface circuit of shell, the user side interface circuit is equivalent to the circuit of a caller ID telephone commonly used, its design feature is: also comprise the bar code scanning control circuit and the Intelligent treatment circuit that are built in the shell, the Intelligent treatment circuit mainly is made up of computer chip and peripheral cell thereof; The bar code scanning control circuit mainly is made up of bar code scanner and peripheral cell thereof; The outside line input circuit of signal output part, control end and the user side interface circuit of the I/O mouth difference intercell connector font code scan control circuit of computer chip, display circuit, function keyboard etc.; Computer chip control strip font code scanner scans bar code phonecard, directly the information that bar code is represented is read in computer chip, and the user can dial the other side's telephone number and conversation under display screen or voice suggestion.
With the matching used bar code plug-in card of card insert type bar code public telephone set as previously mentioned, its design feature is: comprise with the supporting card body of bar code phone deck and be located at bar code on the card body that described bar code can be read in by bar code scanner.
After will being provided with bar code phonecard insertion bar code public telephone set, computer chip control bar code scanner in the telephone set begins scanning, reads sign indicating number and decoding, and this yard outputed to card name, account number and the password of transfering to the bar code phonecard behind the microcontroller automatically, the user can dial the other side's telephone number and conversation under LCD display or voice suggestion.
Technical problem of the present utility model also can solve by taking following measure:
The Intelligent treatment circuit is made up of computer chip and peripheral reset circuit, power circuit and memory thereof; The bar code scanning control circuit is by the bar code power control circuit, bar code telephone card switch, bar code phone deck, bar code scanner and RS232 transducer are formed, the power input of bar code power control circuit connects the output of power circuit, output connects the power input of bar code scanner, the control input end connects a control output end of computer chip, the slot that bar code phone deck is connected with the bar code telephone card, its data wire connects the data input pin that connects the RS232 transducer by bar code scanner, the switching signal output is by the control input end of bar code telephone card switch connection computer chip, and the output of RS232 transducer connects the signal input part of computer chip; Other I/O mouths of computer chip connect outside line input circuit, LCD display, function keyboard of user side interface circuit etc. respectively.
That the bar code plug-in card can adopt is commonly used 200,201,301, IP phonecard and other phonecard, except that being provided with card name, account number, password, also is provided with bar code on the card.
Described bar code can be any two or the two or more combination in phonecard card name, account number, password or card name, account number, the password.
It is EMC806CPU computer chip U3 that the central processing unit chip adopts model, its inside is provided with the RAM of 8KEPROM program storage, 1K byte, 32 I/O mouths, and built-in DTMF, FSK decoder, dtmf dialing device, memory, lcd driver, the circuit that resets, anti-theft feature, P/T function; It is the EPROM chip of 24C04 that memory adopts model, and its data port SDA, synchronizing clock signals SCL link to each other with the 20th, 19 pin of U3 respectively; Reset circuit 16 is built in EMC806 inside, constitutes by the external R21 pull-up resistor of the 72nd pin, voltage VDD.
The bar code scanner control circuit mainly is made of bar code scanner U9 and peripheral current-limiting resistance R31, R32, R33, R38, R28 capacitor C 37, C38, triode Q6, switch SW 1B thereof; It is the EPROM chip U8 of 24C04 that memory adopts model, and the data port SDA of U8, synchronizing clock signals SCL link to each other with the 20th pin SDA, the 19 pin SCL mouths of U3 respectively.
User interface circuit is sent amplifying circuit, speaking circuit, parallel operation testing circuit, hook switch testing circuit, ringing circuit, LCD display, dialing mute circuit, function keyboard, can be filled Ni-MH battery and form by outside line input circuit, overvoltage protection and anti-clutter circuit polarity switching, switching circuit, voltage stabilizing circuit, DTMF.
The control line of the interface of function keyboard links to each other with CPU the 65th～78 pin, and the collection of button data is finished in this control line control; The hook switch testing circuit is formed by connecting by SW1-A switch, resistance R 10, R7, R8 and capacitor C 11; The DTMF transtation mission circuit is by resistance R 23, R24, capacitor C 15, C16, and triode Q9 constitutes, and CPU the 3rd pin output double-tone dtmf signal frequently outputs to outside line through C16, R24 after the Q9 amplification; LCD display is driven by the CPU inner drive, and signal outputs to display screen from CPU the 21st～58 pin; Power circuit by linear voltage-stabilizing circuit, JB, can fill Ni-MH battery and constitute, it is 7805 linear voltage regulator U10 that DC power supply DC enters model after by JB, C39, C40 filtering, stable+5V output that power supply becomes also can be charged to filling Ni-MH battery through R55, D14 by the C contact.
The utlity model has following outstanding effect:
1. outstanding advantage of the present utility model is that the card name on the existing telephone card, account number, password are arranged on the phonecard with the form of bar code, changes the manual input of prior art phonecard information the input of into computer automatic scan, accurate, quick, safety.
2. the user is easy to use: absorbed present IC-card public telephone advantage easy to use, to be printed with account number and password and represent the phonecard account number or after the phonecard of account number and code-bar font code inserts the bar code telephone set, phone is dialled account number or account number and password automatically, can dial phone number according to voice suggestion then, save and dialled 200,201,300, account number or the account number and the password of IP phonecard.
3. phonecard is with low cost: just can the novel card insert type bar code of supporting use public telephone as long as on the existing telephone card, print additional the bar code of representing phonecard account number or account number and password, do not increase existing telephone card cost.Owing to saved storage IC, therefore simple in structure, with low cost have only several maos, can use the cost of manufacture of IC phonecard for hair fastener department significantly originally, and the public telephone card of low face amount is provided to the user simultaneously, replaces the IC-card public telephone system.
4. telephone set is with low cost: the bar code public telephone set is compared with the IC-card public telephone set with said function owing to saved the charging and the cipher authentication function of telephone set, and the telephone set cost also descends significantly.
5. protection hair fastener investor interests: charge system is still used the charge system of original call card it goes without doing any change; In the place that card insert type bar code public telephone is not installed, the user still can call by former mode; There are not phonecard, the use card insert type bar code public telephone of printed bar code to call according to former mode.
The drawing explanation
Fig. 1 is the telephone structure block diagram of the utility model embodiment 1.
Fig. 2 is the telephone set electrical schematic diagram of the utility model embodiment 1.
Fig. 3 is the telephone set Intelligent treatment circuit diagram of the utility model embodiment 1.
Fig. 4 is the telephone user end interface circuit diagram of the utility model embodiment 1.
Fig. 5 is the telephone set bar code scanning control circuit figure of the utility model embodiment 1.
Fig. 6 is the bar code card plugging structure schematic diagram of the utility model embodiment 1.
Fig. 7 is that the utility model is built in a kind of phone control program flow chart among the CPU.
Fig. 8 is that the utility model is built in the control program flow charts such as another kind of phone among the CPU.
Preferred embodiment
Fig. 1～Fig. 7 constitutes embodiment 1 of the present utility model.As can be seen from Figure 1, present embodiment is made up of shell and the user side interface circuit, bar code scanning control circuit and the Intelligent treatment circuit that are built in the shell; User interface circuit is sent amplifying circuit 7, speaking circuit 8, parallel operation testing circuit 9, hook switch testing circuit 10, ringing circuit 11, LCD display 12, dialing mute circuit 13, function keyboard 15, can be filled Ni-MH battery 19 and be formed by connecting by outside line input circuit 2, overvoltage protection and anti-clutter circuit 3 polarity switchings 4 switching circuits 5, voltage stabilizing circuit 6, DTMF; The Intelligent treatment circuit is made up of central processing unit chip 1, reset circuit 16, power circuit 18 memories 14; The bar code scanning control circuit is made up of bar code phone deck 23, bar code scanner 24, bar code telephone card switch 21, bar code power control circuit 20; The I/O mouth of central processing unit chip 1 connects bar code power control circuit 20, RS232 transducer 25 and the bar code telephone card switch 21 of outside line input circuit 2, LCD display circuit 12, memory circuit 14, function keyboard 15 and the bar code scanning control circuit of user side interface circuit respectively.
As can be seen from Figure 2, it is EMC806CPU computer chip U3 that central processing unit chip 1 adopts model, its inside is provided with the RAM of 8KEPROM program storage, 1K byte, 32 I/O mouths, and built-in DTMF, FSK decoder, dtmf dialing device, memory, lcd driver, the circuit that resets, anti-theft feature, P/T function, be the high integrated telephone controller chip of a slice.
It is the EPROM chip of 24C04 that memory adopts model, and its data port SDA, synchronizing clock signals SCL link to each other with 20 pin SDA, the 19 pin SCL mouths of EMC806 (U3) respectively.
The bar code scanner control circuit is by bar code scanner U9, current-limiting resistance R31, R32, R33, R38, R28 capacitor C 37, C38, triode Q6, switch SW 1B constitute, wherein triode Q6 and resistance R 33, R38 constitute the mains switch of bar code scanner, the SCLIC of U9, SDAIC pin link to each other with the 17th, 18 pin of cpu chip U3 respectively, 64 pin of cpu chip U3 link to each other with triode Q6 base stage, and 15 pin of cpu chip U3 link to each other with the SW1B switch.
User interface circuit is sent amplifying circuit 7, speaking circuit 8, parallel operation testing circuit 9, hook switch testing circuit 10, ringing circuit 11, LCD display 12, dialing mute circuit 13, function keyboard 15, can be filled Ni-MH battery 19 and form by outside line input circuit 2, overvoltage protection and anti-clutter circuit 3 polarity switchings 4 switching circuits 5, voltage stabilizing circuit 6, DTMF.The control line that connects keyboard interface links to each other with the 65th～78 pin of cpu chip U3, and the collection of button data is finished in this control line control.LCD display 12 connects the 21st～58 pin of cpu chip U3, and the 21st～58 pin of U3 constitutes the drive output mouth, and by this output port, shows signal outputs to display screen from CPU.Hook switch testing circuit 10 is formed by connecting by SW1-A switch, resistance R 10, R7, R8 and capacitor C 11.DTMF transtation mission circuit 7 is by resistance R 23, R24, capacitor C 15, C16, and triode Q9 constitutes, and CPU the 3rd pin output double-tone dtmf signal frequently outputs to outside line to Q9 after big through C16, R24.Power circuit 18 by linear voltage-stabilizing circuit, JB, can fill Ni-MH battery 19 and constitute, DC power supply DC goes into linear pressurizer 7805 (U10) by JB, C39, C40 filtering are laggard, stable+5V output that power supply becomes also can be charged to filling Ni-MH battery through R55, D14 by the C contact.
The data wire of the external memory chip U8 of the data wire of U3 is deposited the relevant procedures setting, the I/O mouth external connection keyboard interface circuit of U3, reset circuit 16, power circuit 18, bar code scanner 24, switching circuit 5, voltage stabilizing circuit 6, DTMF transtation mission circuit 7, parallel operation testing circuit 9, hook switch testing circuit 10, LCD display 12, dialing mute circuit 13, bar code power control circuit; The both available 220V alternating current of power supply can also use to the rechargeable Ni-H 2 battery charging with the telephone wire power supply.Bar code scanner does not have at ordinary times, when inserting the phonecard of bar code, the SW1B closure, after the IC-CHK pin of cpu chip detects low level, CPU VCC-CTR pin produces a high level and makes the Q6 conducting for the Q6 base stage, and powers on for bar code scanner U9, after bar code scanner U9 powers on, after the phonecard name on the phonecard of bar code, account number, password scanning, decoding outputs to CPU the 17th, 18 pin.After the CPU inter-process, convert double-tone frequency dtmf signal to and export from CPU the 2nd pin.
As can be seen from Figure 6, the bar code plug-in card of present embodiment comprises with the supporting card body 22 of bar code phone deck 23 and is located at bar code 17, password 28 and account number 29 on the card body, bar code can be made up of card name, account number and password, and described bar code 17 can be read in by bar code scanner 24.
In the present embodiment, described account number also has the card number of title or sequence number.
The pin of computer chip U3 is as shown in the table:
| The pin title | The IO mouth | Pin | Power supply | Explanation |
| AVSS | 1 | - | Simulation ground | |
| TONE | 2 | O | The touch-tone signal output | |
| PLLC | 3 | I | The phase-locked loop external connection end | |
| RTIME | 4 | I | Ring time-delay pin | |
| RDETI | 5 | I | Ring detects input | |
| RING.TIP | 6，7 | I | Fsk signal receives input | |
| XIN | 8 | I | 32.768KHz crystal input | |
| XOUT | 9 | O | 32.768KHz crystal input | |
| EST | 10 | O | Time constant | |
| ST/GT | 11 | I/O | Time constant | |
| AVDD | 12 | - | Simulation VDD | |
| HKS | 13 | I | Hook switch detects input, and is effectively high | |
| SPI | 14 | I | And the machine testing pin, effectively low, use this pin to reduce power consumption | |
| IC-CHK | 15 | I | Plug-in card detects pin, and is effectively low | |
| IC-RES | 16 | O | The IC-card resetting pin draws on the 5.1K resistance | |
| SCLIC | 17 | O | IC-card clock pin draws on the 5.1K resistance | |
| SDAIC | 18 | O | IC-card data pin draws on the 5.1K resistance | |
| SCL | 19 | I/O | 24LC16 clock pin draws on the 20K resistance | |
| SDA | 20 | I/O | 24LC16 data pin draws on the 20K resistance | |
| COM7-0 | 21～28 | O | Liquid crystal COM control end | |
| VSS | 29 | - | Digitally | |
| TEST | 30 | I | Ground connection during use | |
| SEG0-27 | 31～58 | O | Liquid crystal SEG control end | |
| FSK0 | 59 | O | The fsk data delivery outlet | |
| FSK1 | 60 | O | The fsk data delivery outlet | |
| FSK2 | 61 | O | The fsk data delivery outlet | |
| FSK3 | 62 | O | The fsk data delivery outlet | |
| SMUTE | 63 | O | Send quiet pin, effectively low | |
| VCC-CTR | 64 | O | IC-card power supply control pin | |
| R0-R4 | 65～68 | I | Keyboard column scan line | |
| NO-USED | 69 | I/O | ||
| FSK-CTR | 70 | O | Fsk signal output control | |
| AVDD | 71 | - | Numeral VDD | |
| RESET | 72 | - | The chip reset pin, low level is effective | |
| DTMF1 | 73 | I | Audio signal starting input, trailing edge is effective | |
| R0-R4 | 74～78 | O | The keyboard horizontal scanning line | |
| DPO | 79 | O | The DP output | |
| IP-MUTE | 80 | O | Receive complete quiet pin, effectively low |
As shown in Figure 7, the service routine of present embodiment is described as follows:
Make a phone call to operate:
1) off-hook, screen display " is asked plug-in card ",
2) will " be printed on the phonecard of bar code " and insert deck, after the demonstration number of requesting, can import the other side's number,
3) phone is according to the automatic the other side's number transfering to corresponding number and imported of the prompting of platform;
4) the other side's off-hook, conversation;
5) talk-through is hung back microphone (on-hook), card taking.
As shown in Figure 8, the service routine of present embodiment is described as follows:
Make a phone call to operate:
1) off-hook, screen display " is asked plug-in card "
2) will " be printed on the phonecard of bar code " and insert deck,
3) signal storage storage card name, account number are cut off the CCD power supply simultaneously,
4) transfer to card name and account number automatically,
5) dial password according to voice prompt manual,
6) user selects function of use according to the prompting of platform, or manually transfers to the other side's number;
7) the other side's off-hook, conversation;
8) talk-through is hung back microphone (on-hook), card taking.
Also can manually input card number, account number and password without plug-in card, according to the voice suggestion dialing, program is as follows then:
1) off-hook, screen display " is asked plug-in card ";
2) the input card name, according to voice suggestion select language, according to voice suggestion input account number and password;
3) carry out function selecting according to voice suggestion
The input called number;
The other side's off-hook, conversation;
4) talk-through is hung back microphone (on-hook).
Receive calls:
Mentioning handle during this phone jingle bell can converse with the other side;
Talk-through is hung back microphone (on-hook).
LoCal number is set
Insert control card, off-hook shows " setting please be dialled ", input #+ administrator password (8).Initial password is 12345678.
If input password bad then show " makeing mistakes " if password is correct, is then imported #, then show "--------------", can import loCal number this moment, and finish on-hook with *.
The characteristics of the utility model embodiment 2 are: the bar code plug-in card can adopt commonly used 200,201,301, IP phonecard and other phonecard, except that being provided with card name, account number, password, also is provided with bar code on the card.All the other are with embodiment 1.
The characteristics of the utility model embodiment 3 are: described bar code can be any two or the two or more combination in phonecard card name, account number, password or card name, account number, the password.All the other together
Claims (9)
1, card insert type bar code public telephone device, comprise card insert type bar code public telephone set, telephone set comprises shell and is built in the interior user side interface circuit of shell, the user side interface circuit is equivalent to the circuit of a caller ID telephone commonly used, its design feature is: also comprise the bar code scanning control circuit and the Intelligent treatment circuit that are built in the shell, the Intelligent treatment circuit mainly is made up of computer chip (1) and peripheral cell thereof; The bar code scanning control circuit mainly is made up of bar code scanner (24) and peripheral cell thereof; The outside line input circuit of signal output part, control end and the user side interface circuit of the I/O mouth difference intercell connector font code scan control circuit of computer chip (1), display circuit, function keyboard etc.; Computer chip (1) control bar code scanner (24) scanning bar code phonecard, directly the information that bar code is represented is read in computer chip (1), and the user can dial the other side's telephone number and conversation under display screen or voice suggestion.
2, card insert type bar code public telephone device as claimed in claim 1, it is characterized in that: also comprise and the matching used bar code plug-in card of aforementioned card insert type bar code public telephone set, the bar code plug-in card comprises the card body and the bar code that be located at card body on supporting with bar code phone deck (23), and described bar code can be read in by bar code scanner (24).
3, bar code plug-in card as claimed in claim 2 is characterized in that: the bar code plug-in card can adopt commonly used 200,201,301, IP phonecard and other phonecard, and card is provided with card name, account number, password and is provided with the bar code of representing aforementioned information.
4, bar code plug-in card as claimed in claim 2 is characterized in that: described bar code can be any two or the two or more combination in phonecard card name, account number, password or card name, account number, the password.
5, card insert type bar code public telephone set according to claim 1 is characterized in that: the Intelligent treatment circuit is made up of computer chip (1) and peripheral reset circuit (16), power circuit (18) and memory (14) thereof; The bar code scanning control circuit is by bar code power control circuit (20), bar code telephone card switch (21), bar code phone deck (23), bar code scanner (24) and RS232 transducer (25) are formed, the power input of bar code power control circuit (20) connects the output of power circuit (18), output connects the power input of bar code scanner (24), the control input end connects a control output end of computer chip, the slot that bar code phone deck (23) is connected with the bar code telephone card, its data wire connects the data input pin that connects RS232 transducer (25) by bar code scanner (24), the switching signal output is by the control input end of bar code telephone card switch (21) connection computer chip (1), and the output of RS232 transducer (25) connects the signal input part of computer chip (1); Other I/O mouths of computer chip (1) connect outside line input circuit (2), LCD display (12), function keyboard (15) of user side interface circuit etc. respectively.
6, card insert type bar code public telephone set according to claim 1, it is characterized in that: it is EMC806CPU computer chip U3 that computer chip (1) adopts model, its inside is provided with the RAM of 8KEPROM program storage, 1K byte, 32 I/O mouths, and built-in DTMF, FSK decoder, dtmf dialing device, memory, lcd driver, the circuit that resets, anti-theft feature, P/T function; It is the EPROM chip of 24C04 that memory adopts model, and its data port SDA, synchronizing clock signals SCL link to each other with the 20th, 19 pin of U3 respectively.
7, card insert type bar code public telephone set according to claim 1 is characterized in that: the bar code scanner control circuit mainly is made of bar code scanner chip U9 and peripheral current-limiting resistance R31, R32, R33, R38, R28 capacitor C 37, C38, triode Q6, switch SW 1B thereof; It is the EPROM chip U8 of 24C04 that memory adopts model, and the data port SDA of U8, synchronizing clock signals SCL link to each other with the 20th pin SDA, the 19 pin SCL mouths of U3 respectively.
8, card insert type bar code public telephone set according to claim 1 is characterized in that: user interface circuit is sent amplifying circuit (7), speaking circuit (8), parallel operation testing circuit (9) hook switch testing circuit (10), ringing circuit (11), LCD display (12), dialing mute circuit (13), function keyboard (15), can be filled Ni-MH battery (19) and form by outside line input circuit (2), overvoltage protection and anti-clutter circuit (3) polarity switching (4) switching circuit (5), voltage stabilizing circuit (6), DTMF.
9, card insert type bar code public telephone set according to claim 7 is characterized in that: the control line of the interface of function keyboard (15) links to each other with CPU the 65th～78 pin, and the collection of button data is finished in this control line control; Hook switch testing circuit (10) is formed by connecting by SW1-A switch, resistance R 10, R7, R8 and capacitor C 11; DTMF transtation mission circuit (7) is by resistance R 23, R24, capacitor C 15, C16, and triode Q9 constitutes, and CPU (3) pin output double-tone dtmf signal frequently outputs to outside line through C16, R24 after the Q9 amplification; LCD display (12) is driven by the CPU inner drive, and signal outputs to display screen from CPU the 21st～58 pin; Power circuit (18) by linear voltage-stabilizing circuit, JB, can fill Ni-MH battery (19) and constitute, DC power supply DC goes into linear voltage regulator chip U10 by JB, C39, C40 filtering are laggard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02248944 CN2580703Y (en) | 2002-10-28 | 2002-10-28 | Card-insertion and bar-code type public telephone equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02248944 CN2580703Y (en) | 2002-10-28 | 2002-10-28 | Card-insertion and bar-code type public telephone equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2580703Y true CN2580703Y (en) | 2003-10-15 |
Family
ID=33719476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02248944 Expired - Fee Related CN2580703Y (en) | 2002-10-28 | 2002-10-28 | Card-insertion and bar-code type public telephone equipment |
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| Country | Link |
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| CN (1) | CN2580703Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547239B (en) * | 2008-03-26 | 2012-04-04 | 威海市卡尔电气研究所 | Intelligent electronic payment public phone |
| CN103016378A (en) * | 2012-11-30 | 2013-04-03 | 杭州顿力电器有限公司 | Driving circuit and driving method of external rotor electronic control type fan adjuster |
| CN103036207A (en) * | 2012-11-30 | 2013-04-10 | 杭州顿力电器有限公司 | Over-voltage protection speed regulation circuit and over-voltage protection method for outer rotor electronic controlled draught fan |
-
2002
- 2002-10-28 CN CN 02248944 patent/CN2580703Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547239B (en) * | 2008-03-26 | 2012-04-04 | 威海市卡尔电气研究所 | Intelligent electronic payment public phone |
| CN103016378A (en) * | 2012-11-30 | 2013-04-03 | 杭州顿力电器有限公司 | Driving circuit and driving method of external rotor electronic control type fan adjuster |
| CN103036207A (en) * | 2012-11-30 | 2013-04-10 | 杭州顿力电器有限公司 | Over-voltage protection speed regulation circuit and over-voltage protection method for outer rotor electronic controlled draught fan |
| CN103016378B (en) * | 2012-11-30 | 2015-07-08 | 杭州顿力电器有限公司 | Driving circuit and driving method of external rotor electronic control type fan adjuster |
| CN103036207B (en) * | 2012-11-30 | 2015-12-09 | 杭州顿力电器有限公司 | Electronic control type fan of outer rotor overvoltage protection alignment circuit and over-voltage protection method |
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