CN100385987C - Gsm and CDMA mode conversion device - Google Patents
Gsm and CDMA mode conversion device Download PDFInfo
- Publication number
- CN100385987C CN100385987C CNB2006100034728A CN200610003472A CN100385987C CN 100385987 C CN100385987 C CN 100385987C CN B2006100034728 A CNB2006100034728 A CN B2006100034728A CN 200610003472 A CN200610003472 A CN 200610003472A CN 100385987 C CN100385987 C CN 100385987C
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- China
- Prior art keywords
- cdma
- gsm
- switch
- mentioned
- gps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a change-over device for GSM/CDMA mode which belongs to one of the multimode change-over device of mobile communication terminal. The mobile communication terminal installed with CDMA part which can execute CDMA mode function and GSM part which can execute GSM mode function includes: external mode changing switch which can selectively connect the said GSM part or CDMA part to the antenna in accordance with the hardware activation corresponding with the subscriber option. It also includes: a CDMA special-purpose SP2T switch which can selectively connect the said GPS part or CDMA part to the said external mode changing switch or a GSM special-purpose SP2T switch which can selectively connect the said GPS part or CDMA part to the said external mode changing switch. The invention can support multimode mobile communication terminal in global hand-micro-telephone, can improve the mode corresponding performance and can easily perform mode conversion operation, and can improve the receiver performance of CDMA mode to improve the speaking quality.
Description
Technical field
The invention belongs to the multi-mode conversion equipment of mobile communication terminal, be particularly related to GSM and CDMA mode conversion device, more detailed saying so makes global mobile phone (global phone) can support various modes in mobile communication terminal by apparatus of the present invention, can improve the pattern corresponding characteristics and carry out the mode switch operation easily.
Background technology
Recently, the demand along with the exploitation of global mobile phone at global mobile phone also continues to increase, and is built-in with CDMA module, gsm module and GPS module in the above-mentioned global mobile phone, and can select AD HOC in above-mentioned three patterns according to user's selection operation.Wherein, select above-mentioned three kinds of patterns, adopt SP3T switch in the prior art as soft (software) on-off mode for making.
Fig. 1 is the block diagram of the mobile communication terminal of the GSM of having of the prior art, CDMA, GPS mode capabilities.As shown in the figure, it includes: the GPS portion 40 that carries out the GPS function; Carry out the CDMA portion 30 of cdma communication function; Carry out the GSM portion 20 of gsm communication function; Be used to control the portable terminal modulator-demodulator MSM 50 of the allomeric function of mobile communication terminal; The SP3T switch 10 that connects antenna and above-mentioned GPS portion 40 or CDMA portion 30 or GSM portion 20 by the operating in soft handover selectivity.
During AD HOC when select above-mentioned three patterns by the user in, above-mentioned MSM 50 will be according to the pattern of above-mentioned selection to the set control signal of SP3T switch 10 outputs, and 10 on above-mentioned SP3T switch is connected in said GSM portion 20, CDMA portion 30 and the GPS portion 40 one according to the control signal of above-mentioned output with antenna.
Fig. 2 is the schematic diagram of an example of SP3T switch, and the operation to above-mentioned SP3T switch describes below.
With reference to accompanying drawing 2, be provided with the terminal V1 of the pattern GSM control signal, CDMA control signal and the gps control signal correspondence that are used for receiving above-mentioned MSM 50 outputs in the above-mentioned SP3T switch 10, V2 and V3, and, the RF3 terminal that also be provided with the RF1 terminal that is connected in GSM portion, the RF2 terminal that is connected in CDMA portion in the above-mentioned SP3T switch 10, is connected in GPS portion, make the control signal of importing according among above-mentioned terminal V1, V2, the V3, above-mentioned SP3T switch 10 respectively is connected to a terminal in above-mentioned RF1 terminal, RF2 terminal and the RF3 terminal with antenna.
Table 1 is the truth table of the SP3T switch among Fig. 2.
Table 1
| V1 | V2 | V3 | |
| RF1 | H | L | L |
| RF2 | L | H | L |
| RF3 | L | L | H |
That is, shown in above-mentioned table 1, when high level H signal is input to the V1 terminal of SP3T switch, above-mentioned antenna will be connected to the RF1 terminal that is connected with GSM portion; When high level H signal is input to the V2 terminal of SP3T switch, above-mentioned antenna will be connected to the RF2 terminal that is connected with CDMA portion; When high level H signal is input to the V3 terminal of SP3T switch, above-mentioned antenna will be connected to the RF3 terminal that is connected with GPS portion.
As mentioned above, above-mentioned SP3T switch will be transformed into each pattern according to the software driving by control signal control, because above-mentioned SP3T switch has only the special-purpose and GSM special use of CDMA, thereby will cause following several problem.
1. under the situation of using the special-purpose SP3T switch of CDMA, because the peak power output under the GSM pattern is 34dBm, and the peak power output under the CDMA pattern is 24dBm, make when using the GSM pattern, above-mentioned SP3T switch will be by the above-mentioned peak power output state that reaches capacity, make second of raising and the 3rd harmonic components (frequency), thereby will influence other people speech quality.
2. under the situation of using the special-purpose SP3T switch of GSM, because the phenomenon of the surplus deficiency of CDMA single-tone, will cause reducing the receiving sensitivity frequency spectrum or signal takes defeat.And, also may reduce the CDMA transmitting-receiving rate in the territory.
Summary of the invention
The object of the present invention is to provide a kind of GSM and CDMA mode conversion device, it includes: external mode conversion switch, and it is selectively connected thereto antenna according to the corresponding hardware driving of user's selection operation with GSM portion or CDMA portion; The SP2T switch, it is selectively connected thereto GPS pattern or CDMA pattern by the software driving with above-mentioned external mode selection switch.Can improve the acceptance division performance of CDMA pattern by the present invention, can improve the harmonic problem of GSM pattern simultaneously and can improve speech quality thus.
In the mobile communication terminal that is provided with CDMA portion that carries out the CDMA mode capabilities and the GSM portion that carries out the GSM mode capabilities, GSM among the present invention and CDMA mode conversion device, it is characterized in that, include: external mode conversion switch, it is selectively connected thereto antenna according to the corresponding hardware driving of user's selection operation with said GSM portion or CDMA portion.
And, the present invention is characterized in that: also be provided with in above-mentioned terminal under the situation of GPS portion of GPS function, also include the special-purpose SP2T switch of CDMA among the present invention, make by the software driving above-mentioned GPS portion or CDMA portion are selectively connected thereto above-mentioned external mode conversion switch.
And, the present invention is characterized in that: also be provided with in above-mentioned terminal under the situation of GPS portion of GPS function, also include the special-purpose SP2T switch of GSM among the present invention, make by the software driving above-mentioned GPS portion or GSM portion are selectively connected thereto above-mentioned external mode conversion switch.
The invention has the beneficial effects as follows that SP3T switch by soft on-off mode is with the external mode selection switch of software driving hardware, be selectively connected thereto GPS pattern or CDMA pattern, and selection operation is connected to corresponding antenna, therefore can improve the acceptance division performance of CDMA pattern by the present invention, the harmonic problem of GSM pattern can be improved simultaneously, speech quality can be improved thus.
Description of drawings
Fig. 1 is the structured flowchart of mobile communication terminal of the prior art.
Fig. 2 is the detailed structure view of the SP3T switch among Fig. 1.
Fig. 3 is the structured flowchart of the mobile communication terminal among the present invention.
Fig. 4 is the detailed structure view of the switch among Fig. 3.
The symbol description of accompanying drawing major part
40:GPS portion of 30:CDMA portion of 20:GSM portion 50: portable terminal modulator-demodulator portion (MSM)
60: external mode conversion switch 70:SP2T switch
Embodiment
With reference to the accompanying drawings the useful embodiment among the present invention is described in detail.
At first, when giving reference marks,, also will give identical symbol as far as possible even in different accompanying drawings, show at structure member identical among the present invention to the structure member in each accompanying drawing.
And, be the detailed description that makes clear and definite basic fundamental thought of the present invention will save known function and structurally associated.
Fig. 3 is the structured flowchart of the mobile communication terminal among the present invention.As shown in the figure, it includes: the CDMA portion 30 that carries out the CDMA mode capabilities; Carry out the GPS portion 40 of GPS function; Carry out the GSM portion 20 of GSM mode capabilities; The software driving of the selection control signal correspondence by outside input is connected in above-mentioned CDMA portion 30 or GPS portion 40 selectivity on the SP2T switch 70 of external mode conversion switch described later; By user's selection operation corresponding hardware driving, above-mentioned SP2T switch 70 (CDMA special use) or GSM portion 20 are selectively connected thereto the external mode conversion switch 60 of antenna; Be used to control the portable terminal modulator-demodulator MSM of portion 50 of the whole operation of mobile communication terminal.
Wherein, Fig. 3 is that the GPS pattern is the example structure of situation of the basic function of CDMA pattern, on the contrary, under the situation of the basic function that above-mentioned GPS pattern is the GSM pattern, to in SP2T switch (GSM special use), connect GPS portion and GSM portion, and GPS portion or GSM portion being connected to above-mentioned external mode conversion switch 60 by the software driving of the special-purpose SP2T switch of said GSM, this is conspicuous to the those skilled in the art.
In addition, above-mentioned MSM 50 selects control signal (GPS/CDMA mode control signal) to above-mentioned SP2T switch 70 outputs, when the pattern of selecting mobile communication terminal by the user (GPS pattern or CDMA pattern), above-mentioned MSM 50 will be to above-mentioned SP2T switch 70 output high level H signal or low level L signals, and 4 pairs of patterns of selecting according to each signal describe with reference to the accompanying drawings.
Fig. 4 is the detailed structure view of the switch among Fig. 3.
With reference to accompanying drawing 4, when the user selects the pattern of mobile communication terminal from menu, SP2T switch 70 will receive the GPS/CDMA mode control signal of the pattern correspondence of above-mentioned selection from MSM 50, and according to the GPS/CDMA mode control signal of above-mentioned reception external mode conversion switch 60 will be connected to GPS portion 40 or CDMA portion 30.For example, when the GPS/CDMA mode control signal that is input to the V1 terminal is under the situation of high level H, antenna is connected to the RF1 terminal that is connected with above-mentioned GPS portion 40, thereby connects above-mentioned external mode conversion switch 60 and GPS portion 40; On the contrary, when the GPS/CDMA mode control signal that is input to the V1 terminal is under the situation of low level L, antenna is connected to the RF2 terminal that is connected with above-mentioned CDMA portion 30, thereby connects above-mentioned external mode conversion switch 60 and CDMA portion 30.
Above-mentioned external mode conversion switch 60 is connected to SP2T switch 70 or GSM portion 20 by user's direct selection operation corresponding hardware driving with above-mentioned antenna.That is, when the user forwards the button of above-mentioned external mode conversion switch 60 to the GPS/CDMA direction, antenna will be connected to above-mentioned SP2T switch 70; When above-mentioned button forwards the GSM direction to, above-mentioned antenna will be directly connected to said GSM portion 20.
Wherein, the inside stitch of above-mentioned external mode conversion switch 60 is made of the material identical with strip line on the PCB, or constitute by the material better than above-mentioned strip line, for example, the inside stitch of above-mentioned external mode conversion switch 60 will form by gold-plated or silver-plated processing.Thus, at the less generation supplementary loss of model that is connected on the circuit board of mobile communication terminal PCB.In addition, be close to above-mentioned PCB model for making it, with the about 1mm of the length that makes the pad end or more than the 2mm.
According to aforesaid the present invention, though the user needs the direct control switch and operation is comparatively bothered, but when utilizing external mode conversion switch among the present invention in the multiplex mode terminal of supporting GSM pattern and CDMA pattern, to operate, the harmonic problem that peak power output in the time of can preventing to carry out work with the GSM pattern may cause, thus other users' speech quality can be improved.And, when operating, can improve the receiving sensitivity frequency spectrum and improve the performance of CDMA acceptance division with the CDMA pattern.
Claims (1)
1. GSM and CDMA mode conversion device, in the mobile communication terminal that is provided with CDMA portion that carries out the CDMA mode capabilities and the GSM portion that carries out the GSM mode capabilities, external mode conversion switch is selectively connected thereto antenna according to the corresponding hardware driving of user's selection operation with said GSM portion or CDMA portion, it is characterized in that: in above-mentioned terminal, be provided with under the situation of GPS portion of GPS function, also include the special-purpose SP2T switch of CDMA, make by the software driving above-mentioned GPS portion or CDMA portion are selectively connected thereto above-mentioned external mode conversion switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050018449 | 2005-03-05 | ||
| KR1020050018449A KR100690790B1 (en) | 2005-03-05 | 2005-03-05 | Apparatus for switching gsm mode and cdma mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1829360A CN1829360A (en) | 2006-09-06 |
| CN100385987C true CN100385987C (en) | 2008-04-30 |
Family
ID=36947432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100034728A Expired - Fee Related CN100385987C (en) | 2005-03-05 | 2006-02-10 | Gsm and CDMA mode conversion device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100690790B1 (en) |
| CN (1) | CN100385987C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100716796B1 (en) * | 2005-10-26 | 2007-05-14 | 전자부품연구원 | Triplexer |
| KR100963391B1 (en) * | 2007-11-13 | 2010-06-14 | 주식회사 케이티테크 | Detachable Roaming Service Module, Portable Device, and Portable Device Module |
| CN101841601A (en) * | 2010-05-04 | 2010-09-22 | 中兴通讯股份有限公司 | Antenna device and dual-mode intelligent terminal |
| CN101931700B (en) * | 2010-08-20 | 2012-12-19 | 北京天碁科技有限公司 | Method for realizing communication between smart mobile phone chips and smart mobile phone |
| CN102832969A (en) * | 2012-09-04 | 2012-12-19 | 深圳市双赢伟业科技股份有限公司 | EOC (Ethernet over Coax) mixer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152254A2 (en) * | 2000-04-25 | 2001-11-07 | Agilent Technologies, Inc. (a Delaware corporation) | Combined GPS and CDMA in a mobile transceiver |
| WO2003034603A1 (en) * | 2001-10-13 | 2003-04-24 | Samsung Electronics Co., Ltd | Mobile communication system having multi-band antenna |
| CN2629356Y (en) * | 2003-06-06 | 2004-07-28 | 覃洪美 | Quangiutong and small smart two-in-one mobile phone |
| CN1551658A (en) * | 2003-05-15 | 2004-12-01 | 乐金电子（中国）研究开发中心有限公 | Mobile communication terminal supporting three pattern communication mode |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100344614B1 (en) * | 1999-06-29 | 2002-07-25 | 삼성전기주식회사 | Wireless terminal using tdd and fdd communication |
| KR20010008695A (en) * | 1999-07-02 | 2001-02-05 | 김영환 | Dual mode mobile terminal shared intermediate frequency |
| KR20010079010A (en) * | 2001-06-02 | 2001-08-22 | 안형근 | Apparatus for transmitting and receiving triple band RF for the GSM handset |
| KR20030002452A (en) * | 2001-06-29 | 2003-01-09 | 엘지전자 주식회사 | Triple band embodiment circuit in mobile phone |
| KR20020023299A (en) * | 2002-01-14 | 2002-03-28 | 김호영 | Apparatus for interfacing mobile telecommunication terminal |
| KR100524753B1 (en) * | 2003-05-09 | 2005-11-01 | 엘지전자 주식회사 | Dual mode duplexer in mobile communication terminal |
-
2005
- 2005-03-05 KR KR1020050018449A patent/KR100690790B1/en not_active IP Right Cessation
-
2006
- 2006-02-10 CN CNB2006100034728A patent/CN100385987C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1152254A2 (en) * | 2000-04-25 | 2001-11-07 | Agilent Technologies, Inc. (a Delaware corporation) | Combined GPS and CDMA in a mobile transceiver |
| WO2003034603A1 (en) * | 2001-10-13 | 2003-04-24 | Samsung Electronics Co., Ltd | Mobile communication system having multi-band antenna |
| CN1551658A (en) * | 2003-05-15 | 2004-12-01 | 乐金电子（中国）研究开发中心有限公 | Mobile communication terminal supporting three pattern communication mode |
| CN2629356Y (en) * | 2003-06-06 | 2004-07-28 | 覃洪美 | Quangiutong and small smart two-in-one mobile phone |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100690790B1 (en) | 2007-03-09 |
| CN1829360A (en) | 2006-09-06 |
| KR20060097322A (en) | 2006-09-14 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LANGCHAO LEJIN DIGITAL MOBILE COMMUNICATION CO., L Free format text: FORMER OWNER: LG ELECTRONIC (CHINA) RESEARCH + DEVELOPMENT CENTRE CO., LTD. Effective date: 20120309 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 100022 CHAOYANG, BEIJING TO: 264001 YANTAI, SHANDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120309 Address after: 264001 No. 228 Changjiang Road, Yantai economic and Technological Development Zone, Shandong, China Patentee after: Langchao Lejin Digital Mobile Communication Co., Ltd. Address before: 100022 Beijing city Chaoyang District Jianguomenwai Street No. 12 b Gemini building 18 layer tower Patentee before: LG Electronic (China) Research and Development Center Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20140210 |