CN2602567Y - GPRS wireless modem - Google Patents
GPRS wireless modem Download PDFInfo
- Publication number
- CN2602567Y CN2602567Y CN 02294061 CN02294061U CN2602567Y CN 2602567 Y CN2602567 Y CN 2602567Y CN 02294061 CN02294061 CN 02294061 CN 02294061 U CN02294061 U CN 02294061U CN 2602567 Y CN2602567 Y CN 2602567Y
- Authority
- CN
- China
- Prior art keywords
- usb
- plug
- gprs wireless
- gprs
- signal converter
- 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
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Abstract
The utility model discloses a GPRS wireless modem which adopts a GPRS system wireless communication network. Wherein, a compressed enclosure is encapsulated with a USB communication signal converter and a GPRS wireless communication emitting and receiving module with an built in antenna, the surface of the shell is provided with a SIM card and an indicator light, one side of the shell is provided with a USB plug, a plug signal terminal is connected with the USB communication signal converter, a power source which is brought in is connected with a reducing and voltage stabilizing circuit. The modem uses a computer USB communication connector channel, has the characteristics of a hot plug, no reprovision power source, a quick transmission speed and a universal connector, which can realize the economical INTERNET special line dialing connection in the areas which are covered by the GPRS wireless communication network by comparing with other ways of surfing the net. The utility model has a cleverish and firm volume, which is easy to carry, whose card base of the open type SIM card can share the same SIM card with the mobile, can save half costs for users while using the monthly payment.
Description
Technical field
The utility model belongs to the network communication device that is disposed at computer, particularly a kind of modulator-demodulator that utilizes the GPRS wireless communication networks.
Background technology
It is a kind of common mode that inserts the Internet that present domestic notebook computer user uses PCMCIA MODEM device, and this device basic composition is pcmcia interface module and wireless telecommunications transceiver module.
There is following major defect in said apparatus: pcmcia interface can not be applied to desktop computer, and its versatility is relatively poor, and needs the configure dedicated power supply.
Summary of the invention
The utility model is relatively poor and need the technical problem of configure dedicated power supply in order to solve interface generality that known PCMCIA MODEM device exists, and discloses a kind of GPRS radio modem that can be used for desktop computer, do not need the configure dedicated power supply.
The utility model for the above-mentioned technical problem that solves known PCMCIA MODEM device and exist by the following technical solutions: be packaged with USB communication signal converter chip in the flat package and be connected with its respective digital passage, the GPRS wireless telecommunications transceiver module that has built-in aerial, the flat package surface is provided with the SIM card deck, described USB communication signal converter chip and GPRS wireless telecommunications transceiver module are respectively equipped with the communication indicator light that is installed in flat package, flat package one end is provided with the USB plug that is connected with notebook computer USB socket with desktop computer, the signal end of this plug is connected with the USB port of USB communication signal converter chip, the power supply that this plug is introduced is connected with reduction voltage circuit and voltage stabilizing circuit, and the output of voltage stabilizing circuit is connected to the power end of USB communication signal converter chip and GPRS wireless telecommunications transceiver module.
The utility model can also be taked following technical measures:
Described USB plug is provided with sheath.
The beneficial effects of the utility model and advantage are: the GPRS radio modem utilizes notebook computer or desktop computer USB communication interface as passage, and interface generality is better than common PCMCIA MODEM; And make this modulator-demodulator have can hot plug characteristics.The supply voltage that USB plug is introduced as this modulator-demodulator working power, does not need the configure dedicated power supply after step-down and voltage stabilizing.Dial up on the telephone mode, digital telephone special line dialing (ASDL/DDN) network access and local area network (LAN) transfer access network access relatively with ordinary telephone line, and the most outstanding characteristics of this modulator-demodulator are to realize the special line dial-up connection of practicality, economic INTERNET wireless communication networks in the area that the GPRS wireless communication networks covers by this modulator-demodulator.The small and exquisite firm not cracky of the utility model volume, be easy to carry about with one, built-in highly sensitive antenna has reduced the rapid wear factor of product.Opening SIM card deck, can with the shared SIM card of mobile phone, when use monthly payment way of paying, can save half expense like this for the user.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 is the utility model circuit structure block diagrams.
Drawing reference numeral: 1 flat package, 2 built-in aerials, 3 sheaths, 4USB plug, 5USB communication indicator light, 6 GPRS communication indicator lights, 7 SIM card decks.
Embodiment
Below in conjunction with drawings and Examples explanation the utility model.
As shown in Figure 1, be packaged with USB communication signal converter chip and GPRS wireless telecommunications transceiver module and reduction voltage circuit and voltage stabilizing circuit in the flat package 1 of rigid plastics, also be packaged with the built-in aerial 2 of GPRS wireless telecommunications transceiver module.The flat package surface is provided with SIM card deck 7 and can monitors the USB communication indicator light 5 and the GPRS communication indicator light 6 of real-time communication state intuitively.
The utility model circuit structure is shown in Fig. 2 circuit structure block diagram, the USB plug signal end connects the USB port of USB communication signal converter chip, and USB communication signal converter chip is connected by its high-speed figure passage is corresponding with GPRS wireless telecommunications transceiver module.The supply voltage that USB plug is introduced provides the working power of 500mA/5Vdc for USB communication signal converter chip and GPRS wireless telecommunications transceiver module through reduction voltage circuit and voltage stabilizing circuit.
The each several part operation principle is as follows:
USB communication signal converter chip becomes GPRS wireless telecommunications transceiver module acceptable digital signal with the communication data of the USB2.0 standard of outside (PC) I/O through level conversion and decoding, and----user can monitor by USB communication indicator light.
GPRS wireless telecommunications transceiver module becomes the very high frequency(VHF) radio signal with the data-modulated that receives, and carries out exchanges data by GPRS wireless communication networks and INTERNET.----user can monitor by GPRS communication indicator light.
The reduction voltage circuit of present embodiment and voltage stabilizing circuit adopt general common circuit, can satisfy GPRS wireless telecommunications transceiver module moment power consumption greatly and supply power voltage less than 4.5 volts of two characteristic requirements.
This modulator-demodulator is moved by modem driver under the USB interface device driver management.
Claims (2)
1, the GPRS radio modem, it is characterized in that: be packaged with USB communication signal converter chip in the flat package and be connected with its respective digital passage, the GPRS wireless telecommunications transceiver module that has built-in aerial, the flat package surface is provided with the SIM card deck, described USB communication signal converter chip and GPRS wireless telecommunications transceiver module are respectively equipped with the communication indicator light that is installed in flat package, flat package one end is provided with the USB plug that is connected with notebook computer USB socket with desktop computer, the signal end of this plug is connected with the USB port of USB communication signal converter chip, the power supply that this plug is introduced is connected with reduction voltage circuit and voltage stabilizing circuit, and the output of voltage stabilizing circuit is connected to the power end of USB communication signal converter chip and GPRS wireless telecommunications transceiver module.
2, GPRS radio modem according to claim 1, it is characterized in that: described USB plug is provided with sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294061 CN2602567Y (en) | 2002-12-26 | 2002-12-26 | GPRS wireless modem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294061 CN2602567Y (en) | 2002-12-26 | 2002-12-26 | GPRS wireless modem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2602567Y true CN2602567Y (en) | 2004-02-04 |
Family
ID=34151899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02294061 Expired - Fee Related CN2602567Y (en) | 2002-12-26 | 2002-12-26 | GPRS wireless modem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2602567Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888030A (en) * | 2010-06-30 | 2010-11-17 | 华为终端有限公司 | USB device and wireless modulator-demodulator |
| KR20110088686A (en) * | 2010-01-29 | 2011-08-04 | 엘지전자 주식회사 | Terminal |
| CN102622110A (en) * | 2012-02-21 | 2012-08-01 | 中兴通讯股份有限公司 | Capacitive stylus component |
| CN104219554A (en) * | 2013-05-30 | 2014-12-17 | 深圳清华大学研究院 | Digital TV receiver and digital TV playing method |
-
2002
- 2002-12-26 CN CN 02294061 patent/CN2602567Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110088686A (en) * | 2010-01-29 | 2011-08-04 | 엘지전자 주식회사 | Terminal |
| KR101672426B1 (en) * | 2010-01-29 | 2016-11-03 | 엘지전자 주식회사 | Terminal |
| CN101888030A (en) * | 2010-06-30 | 2010-11-17 | 华为终端有限公司 | USB device and wireless modulator-demodulator |
| CN101888030B (en) * | 2010-06-30 | 2013-03-27 | 华为终端有限公司 | USB device and wireless modulator-demodulator |
| CN102622110A (en) * | 2012-02-21 | 2012-08-01 | 中兴通讯股份有限公司 | Capacitive stylus component |
| CN104219554A (en) * | 2013-05-30 | 2014-12-17 | 深圳清华大学研究院 | Digital TV receiver and digital TV playing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |