KR20020069946A - The detachable CDMA card and the cellular phone and the wireless modem including the card - Google Patents

The detachable CDMA card and the cellular phone and the wireless modem including the card Download PDF

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Publication number
KR20020069946A
KR20020069946A KR1020010010546A KR20010010546A KR20020069946A KR 20020069946 A KR20020069946 A KR 20020069946A KR 1020010010546 A KR1020010010546 A KR 1020010010546A KR 20010010546 A KR20010010546 A KR 20010010546A KR 20020069946 A KR20020069946 A KR 20020069946A
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South Korea
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card
cdma
processor
unit
wireless modem
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KR1020010010546A
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Korean (ko)
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KR100437256B1 (en
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윤경용
김동호
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인스퀘어 주식회사
주식회사 사이버다인
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Priority to KR10-2001-0010546A priority Critical patent/KR100437256B1/en
Priority to PCT/KR2001/001767 priority patent/WO2002069510A1/en
Publication of KR20020069946A publication Critical patent/KR20020069946A/en
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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
    • 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
    • H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0067—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

PURPOSE: A CDMA card capable of being installed in a portable phone and wireless modem is provided to modularize a CDMA system so as to be installed in a portable phone and wireless modem. CONSTITUTION: A portable phone and wireless modem, wherein a CDMA card is installed, is composed of an RF processing part(32), an IF processing part(34), a baseband processing part(36), a RAM/ROM/EEPROM(38), and an interface part(39). The RF processing part(32) adjusts the gain of an RF signal received from an antenna(30) within the range of A/D conversion. The IF processing part(34) carries out A/D conversion for the IF signal outputted from the RF processing part(32). The baseband processing part(36) regenerates the digital voice signal outputted from the IF processing part(34) and transmits it to an external codec. The RAM/ROM/EEPROM(38) stores data.

Description

착탈가능한 ＣＤＭＡ 카드 및 상기 카드가 장착되는 휴대폰 및 무선 모뎀{The detachable CDMA card and the cellular phone and the wireless modem including the card}The removable CDMA card and the cellular phone and the wireless modem including the card}

본 발명은 착탈가능한 CDMA 카드 및 상기 카드가 장착되는 휴대폰 및 무선 모뎀에 관한 것으로서, 보다 상세하게는 휴대폰 및 무선 모뎀에 착탈가능하고 CDMA 시스템을 하나로 모듈화한 착탈가능한 CDMA(Code Division Multiple Access) 카드 및 상기 카드가 장착되는 휴대폰 및 무선 모뎀을 제공하는 것이다.The present invention relates to a removable CDMA card and a mobile phone and a wireless modem to which the card is mounted, and more particularly, to a removable code division multiple access (CDMA) card that is detachable to a mobile phone and a wireless modem and modularizes a CDMA system. It is to provide a mobile phone and a wireless modem to which the card is mounted.

종래의 CDMA 기술은 셀룰러 및 PCS(Personal Communication Service) 시스템에 모두 이용되고 있으며 많은 사용자를 수용할 수 있고, 또한 고속데이타의 전송이 용이하게 때문에 미래의 이동통신 시스템을 주도할 기술로 평가되고 있으며, 이러한 대표적인 종래기술로서 대한민국 특허 등록 제 10-0236792호에 잘 나타나 있다. 도 5는 종래의 CDMA 휴대폰의 블록구성도로서, 안테나부(51)를 통하여 수신된 알에프(RF) 신호는 스위치부(53)를 통하여 광대역 알에프부(52)와 협대역 알에프부(54)를 각각 거친 후 각각의 광대역모뎀(57)과 협대역 모뎀(58)으로 인가되게 연결하고, 또한 각각의 광대역모뎀(57)과 협대역모뎀(58)에서 변환되어 출력되는 음성송출신호는 상기 스위치부(53)와 안테나부(51)를 통하여 무선기지국 측으로 전송되게 연결하여 구성하고 있다.Conventional CDMA technology is used in both cellular and PCS (Personal Communication Service) systems, can accommodate a large number of users, and it is evaluated as a technology that will lead the future mobile communication system because it can easily transmit high-speed data. Such a representative prior art is well shown in Korean Patent Registration No. 10-0236792. FIG. 5 is a block diagram of a conventional CDMA mobile phone, in which the RF signal received through the antenna unit 51 is connected to the wideband RF unit 52 and the narrowband RF unit 54 through the switch unit 53. After each rough connection, each broadband modem 57 and narrowband modem 58 are connected to each other, and the voice transmission signal converted and output from each broadband modem 57 and narrowband modem 58 is converted into the switch unit. And 53 to be transmitted to the radio base station through the antenna unit 51.

상기 광대역모뎀(57) 및 협대역 모뎀(58)에는 각각 단말기 제어부(55)와 스피거/마이크(59)를 접속하여 구성하고 있다. 또한 상기 단말기 제어부(55)는 단말기 메모리부(56)를 가지며 상기 스위치부(53)와 광대역 알에프부(52)와 협대역 알에프부(54)를 제어하게 접속하여 구성한다.The broadband modem 57 and the narrowband modem 58 are configured by connecting a terminal controller 55 and a speaker / microphone 59, respectively. In addition, the terminal control unit 55 has a terminal memory unit 56 and is configured by controlling the switch unit 53, the broadband RF unit 52 and the narrowband RF unit 54 to be controlled.

이렇게 구성된 중첩 이동단말기에서 안테나부(51)로 수신된 신호는 스위치부(53)에서 광대역 알에프부(52)와 협대역 알에프부(54) 이중 광대역 CDMA 신호는 광대역 모뎀(57)을 통하여 스피커(59)로 전송되고, 또 협대역 알에프부(54)를 통해 협대역모뎀(58)에 전달된 신호는 종래의 이동단말기와 같은 과정을 통해 스피커/마이크(59)의 스피커로 출력된다.In the overlapping mobile terminal configured as described above, the signal received by the antenna unit 51 is switched by the wideband RF unit 52 and the narrowband RF unit 54 by the broadband unit 57. 59 and a signal transmitted to the narrowband modem 58 through the narrowband RF section 54 are output to the speaker of the speaker / microphone 59 through the same process as the conventional mobile terminal.

CDMA PCMCIA(Personal Computer Memory Card International Association) 무선 모뎀은 별도의 전화선 연결이나 혹은 휴대전화에 중간 인터페이스의 연결없이 곧장 통신망에 접속할 수 있어, 특히 모바일컴퓨터, 즉 노트북컴퓨터 사용자에게 많은 편리함을 제공하여 왔다. 그러나 상기 무선 모뎀에도 휴대전화처럼 별도의 전화번호가 부여되어야 하고, 이에 따라 기본료 등 제반 고정경비를 별도로 지불하여야 하므로 휴대 전화 사용자에게는 두 개의 휴대 전화를 소유한 격이 되어 이중부담이 되어왔다.The CDMA Personal Computer Memory Card International Association (PCMCIA) wireless modem has been able to connect directly to a network without a separate telephone line connection or an intermediate interface to a mobile phone, which has provided a lot of convenience, especially for mobile computer users. However, the wireless modem has to be given a separate phone number like a mobile phone, and accordingly has to pay a separate fixed cost such as a basic fee, so that the mobile phone user has a double burden of owning two mobile phones.

따라서 본 발명은 상기한 바와 같은 종래의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 휴대폰 및 무선 모뎀에 착탈가능하고 CDMA 시스템을 하나로 모듈화한 착탈가능한 CDMA 카드 및 상기 카드가 장착되는 휴대폰 및 무선 모뎀을 제공하는 것이다.Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is a removable CDMA card and a mobile phone equipped with a removable CDMA card modularized into a CDMA system and a mobile phone and a wireless modem; It is to provide a wireless modem.

도 1은 본 발명에 따른 CDMA 카드와 휴대폰의 분리예.1 is a separation example of a CDMA card and a mobile phone according to the present invention.

도 2는 본 발명에 따른 CDMA 카드와 CDMA 플랫폼 카드 분리예.2 is a separation example of a CDMA card and a CDMA platform card according to the present invention;

도 3은 본 발명에 따른 CDMA 휴대폰과 무선모뎀의 블록구성도.Figure 3 is a block diagram of a CDMA mobile phone and a wireless modem according to the present invention.

도 4는 본 발명에 따른 CDMA 카드와 CDMA 플랫폼 카드의 스위치를 나타낸 측면도.4 is a side view showing a switch of a CDMA card and a CDMA platform card according to the present invention.

도 5는 종래의 CDMA 휴대폰의 블록구성도.5 is a block diagram of a conventional CDMA cellular phone.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 휴대폰12 : CDMA 카드10 cell phone 12 CDMA card

20 : CDMA 플랫폼카드30 : 안테나20: CDMA platform card 30: antenna

32 : 알에프 처리부34 : 아이에프 처리부32: RF processing unit 34: IF processing unit

36 : 기저대역처리부38 : 램,롬,이피롬36: baseband processor 38: RAM, ROM, Epirome

39 : 인터페이스부40 : 스위치39: interface unit 40: switch

42 : 스위치레인51 : 안테나부42: switch lane 51: antenna unit

52 : 광대역 알에프부53 : 스위치부52: broadband RF unit 53: switch unit

54 : 광대역 알에프부55 : 단말기 제어부54: broadband RF unit 55: terminal control unit

56 : 단말기 메모리부57 : 광대역 모뎀56: terminal memory unit 57: broadband modem

58 : 협대역 모뎀59 : 스피커/마이크58 narrowband modem 59 speaker / microphone

상기한 목적을 달성하기 위하여 본 발명에 따른 착탈가능한 CDMA 카드는, 안테나에서 수신된 알에프신호를 A/D가 가능한 범위내로 이득조절하는 알에프 처리부와, 상기 알에프 처리부에서 출력된 아이에프 신호를 A/D 변환하는 아이에프 처리부와, 상기 아이에프 처리부에서 출력된 디지털 음성 신호를 재생하여 외부 코덱에게 전송하는 기저대역 처리부와, 데이타를 저장하는 램,롬,이피롬부를 모듈로 구성한다.In order to achieve the above object, the removable CDMA card according to the present invention includes an RF processing unit for gain control of the RF signal received from the antenna within the range of A / D, and the A / F signal output from the RF processing unit. The module comprises a IF processor for D conversion, a baseband processor for reproducing and transmitting a digital voice signal output from the IF processor, and a RAM, ROM, and EPROM unit for storing data.

이러한 본 발명에 따른 바람직한 실시예들을 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.Preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 CDMA카드와 휴대폰의 분리예로서, 바람직하게는 도면에 상기 CDMA 카드(12)를 휴대폰(10)에 장착시키는 예를 나타낸다. 도시한바와 같이 CDMA 카드(12)는 슬림형의 소형 카드로 형성하여 휴대폰(10)과의 착탈이 용이하게 한다.1 shows an example of separating the CDMA card and the mobile phone according to the present invention, and preferably shows the example in which the CDMA card 12 is mounted on the mobile phone 10 in the drawing. As shown in the figure, the CDMA card 12 is formed of a slim small card to facilitate attachment and detachment with the mobile phone 10.

도 2는 본 발명에 따른 CDMA 카드와 CDMA 플랫폼 카드 분리예로서, 상기 CDMA 카드(12)를 CDMA 플랫폼 카드(20)에 장착시키는 예를 나타낸다. 휴대폰(10)과는 달리 PCMCIA CDMA 무선 모뎀에서는 CDMA 카드(12)를 CDMA 플랫폼 카드(20)에 장착하여 사용하므로 CDMA 플랫폼 카드(20)가 요구된다.2 shows an example of separating the CDMA card and the CDMA platform card according to the present invention, and attaching the CDMA card 12 to the CDMA platform card 20. Unlike the mobile phone 10, in the PCMCIA CDMA wireless modem, a CDMA platform card 20 is required because the CDMA card 12 is mounted on the CDMA platform card 20 and used.

도 3은 본 발명에 따른 CDMA 휴대폰과 무선모뎀의 블록구성도로서 CDMA 카드를 각각 휴대폰과 무선 모뎀에 장착하였을 경우의 각 부분의 구성관계를 나타낸 것이다. 상기 휴대폰 및 무선모뎀은 알에프 처리부(32)와, 아이에프(IF) 처리부(34)와, 기저대역처리부(36)와, 램,롬,이피롬(38)와, 인터페이스부(39)로 구성되는데 상기 알에프 처리부(32)는 단말기의 첫단에서 주파수를 송수신하는 안테나(30)와, 안테나(30)와 송수신단을 연결하여 송신신호와 수신신호를 분리시키는 듀플렉스와, 안테나(30)에서 수신된 알에프 신호를 아이에프 신호로 변환한후 A/D가 가능한 범위내로 이득 조절하여 아이에프 처리부(34)에 넘겨주는 수신부와, 휴대폰 단말기에 필요한 주파수를 공급하고 출력주파수를 변화시키는 주파수합성부로 구성된다.Figure 3 is a block diagram of a CDMA cellular phone and a wireless modem according to the present invention, showing the configuration of each part when the CDMA card is mounted on the cellular phone and the wireless modem, respectively. The mobile phone and the wireless modem are composed of an RF processor 32, an IF processor 34, a baseband processor 36, a RAM, a ROM, an EPROM 38, and an interface 39. The RF processor 32 is an antenna 30 for transmitting and receiving a frequency at the first end of the terminal, a duplex connecting the antenna 30 and the transmitting and receiving end to separate the transmission signal and the reception signal, and received from the antenna 30 After converting the RF signal to the IF signal, the gain control to the A / D range within the possible gain control unit 34 and the receiving unit and the frequency synthesizer for supplying the necessary frequency to the mobile phone terminal and changing the output frequency .

상기 아이에프 처리부(34)는 기저대역 신호와 브이오디(VOD)에 의해 변조된 신호를 출력하는 상/하향 변환 믹서와 원하지 않는 신호를 제거하는 엘피에프(LPF) 와 아날로그 수신 신호를 디지털 신호로 만드는 에이디씨(ADC)와 디지털 신호를 아날로그 신호로 만드는 디에이씨(DAC)로 구성된다.The IF processor 34 converts a baseband signal and a VOD modulated signal to output an up / down conversion mixer, an LPF to remove unwanted signals, and an analog received signal as a digital signal. It consists of an ADC that makes it and a DC that turns an analog signal into a digital signal.

상기 기저대역처리부(36)는 인접기지국을 감시하는 탐색자와 실질적인 복조를 수행하는 디모듈레이팅 핑거와 3개의 디모듈레이팅 핑거로부터 입력되는 각각의 다중경로에 대한 정보를 결합하는 심볼 컴바이너와 입력신호에 대한 전체적인 이득조정과 효과적인 A/D변환을 보장하는 에이지씨(AGC)와 D/A변환기의 역할을 수행하는 피시엠(PCM)으로 구성된다.The baseband processor 36 is a symbol combiner and input signal combining information about the multipath input from the searcher monitoring the adjacent base station, the demodulating finger performing the actual demodulation and the three demodulating fingers. It consists of AGC and PCM which acts as a D / A converter to ensure overall gain control and effective A / D conversion.

상기 램,롬,이피롬부(38)는 휴대폰의 작동에 관계된 정보를 입력 저장하는 역할을 수행하는 램(RAM)과, 롬(ROM)과, 이피롬(EEPROM)으로 구성된다.The RAM, ROM, and EPROM part 38 is configured by a RAM that serves to store and store information related to the operation of a mobile phone, a ROM, and an EEPROM.

상기 인터페이스부(39)는 휴대폰일 경우에는, 휴대폰과의 연결 인터페이스인 인터페이스 커넥터와, 디스플레이 화면으로 사용되는 LCD와 드라이버와 입력장치인키보드와 핸즈프리 사용을 감안한 코덱과 음성의 송수신 장치인 스피커와 마이크 등의 기타 지원 인터페이스로 구성된다. 무선 모뎀일 경우에는, PCMCIA 프로토콜 변환부와 컴퓨터와의 연결 인터페이스인 인터페이스 커넥터로 구성된다.In the case of a mobile phone, the interface unit 39 includes an interface connector, which is a connection interface with a mobile phone, an LCD, a driver, an input device, a keyboard, and a speaker and a microphone, which are voice transmission / receiving devices in consideration of hands-free use. And other supporting interfaces. In the case of a wireless modem, it consists of an interface connector which is a connection interface between a PCMCIA protocol conversion unit and a computer.

이렇게 구성된 휴대폰 및 무선 모뎀에서 안테나(30)로 수신된 신호는 알에프 처리부(32)에서 A/D가 가능한 범위내로 이득조절되고 아이에프 처리부(34)에서는 상기 알에프 처리부(32)에서 출력된 아이에프 신호를 A/D 변환하고 기저대역 처리부(36)에서는 상기 아이에프 처리부(34)에서 출력된 디지털 음성 신호를 재생하여 외부 코덱에게 전송하고,상기 디지털 음성 신호는 종래의 이동단말기와 같은 과정을 통해 인터페이스부(39)를 통해 출력된다.In the cellular phone and the wireless modem configured as described above, the signal received by the antenna 30 is gain-controlled within the range where A / D is possible in the RF processing unit 32, and the IF processing unit 34 outputs the IF output from the RF processing unit 32. A / D-converts the signal and the baseband processor 36 reproduces the digital voice signal output from the IF processor 34 and transmits the digital voice signal to an external codec. The digital voice signal is processed through a process similar to that of a conventional mobile terminal. It is output through the interface unit 39.

상기 CDMA 휴대폰과 무선 모뎀의 구성부분에서 공통된 부분인 알에프 처리부(32)와 아이에프 처리부(34)와 기저대역 처리부(36)와 램,롬,이피롬(38)을 모듈화하여 착탈가능하도록 CDMA 카드를 구성한다.The CDMA card is modularized to be detachable by modularizing the RF processing unit 32, the IF processing unit 34, the baseband processing unit 36, the RAM, the ROM, and the EPROM 38, which are common parts of the CDMA mobile phone and the wireless modem. Configure

도 4는 본 발명에 따른 CDMA 카드와 CDMA 플랫폼 카드의 스위치를 나타낸 측면도이다.4 is a side view showing a switch of a CDMA card and a CDMA platform card according to the present invention.

도시된 바와 같이 CDMA 카드와 CDMA 플랫폼 카드의 결합시 스위치 오프하기 위해서는 상기 스위치(40)가 스위치 레인(42)의 아래에 위치하고 스위치온하기 위해서는 상기 스위치(40)가 스위치 레인(42)의 위에 위치하도록 해야 한다.As shown, the switch 40 is located below the switch lane 42 to switch off when the CDMA card and the CDMA platform card are combined, and the switch 40 is located above the switch lane 42 to switch on. You should.

결합방법은 우선 CDMA 카드(12)를 CDMA 플랫폼 카드(20)의 옆으로 밀어 넣은 뒤에 측면부의 스위치(40)를 스위치 온 시키면 되는데, 스위치(40)의 역할은 CDMA 플랫폼 카드(20)의 전기를 온오프시키는 것이다. 상기 스위치(40)는 CDMA 카드(12)가 끼워진 상태에서만 스위치(40)가 움직이도록해서 사용자의 오결합을 방지하고 CDMA 카드(12)가 확실하게 끼워진 결과로 PCMCIA 카드의 회로를 보호한다. CDMA 카드와 휴대폰과의 결합방법 역시 상기에서 설명한 CDMA 카드와 CDMA 플랫폼 카드의 결합방법과 동일하고 휴대폰(10)에서는 스위치(40)를 오프시키면 전화기의 파워스위치를 작동하지 않아도 파워가 꺼지게 되며 스위치를 오프시킨 상태에서는 파워 버튼을 눌러도 전화기에 전기가 흐르지 않는다.The coupling method is to first push the CDMA card 12 to the side of the CDMA platform card 20, and then switch on the switch 40 of the side, the role of the switch 40 is to turn off the electricity of the CDMA platform card 20 It's on and off. The switch 40 allows the switch 40 to move only when the CDMA card 12 is inserted, thereby preventing user misalignment and protecting the circuit of the PCMCIA card as a result of the secure insertion of the CDMA card 12. The method of combining the CDMA card and the mobile phone is also the same as the method of combining the CDMA card and the CDMA platform card described above. In the mobile phone 10, when the switch 40 is turned off, the power is turned off even when the power switch of the phone is not operated. In the off state, no power is applied to the phone even when the power button is pressed.

이상과 같은 본 발명의 착탈가능한 CDMA 카드 및 상기 카드가 장착되는 휴대폰 및 무선모뎀에 따르면, 모듈 하나로 무선모뎀과 휴대전화를 동시에 사용할 수 있으며 단말기 자체의 단가를 대폭 낮출 수 있으며 휴대폰 전원이 다하여 다른 사람의 전화를 빌려 사용할 경우 자신의 전화모듈을 타인의 전화기에 교체 장착하여 사용할 수 있는 효과가 있다.According to the removable CDMA card of the present invention as described above, and a mobile phone and a wireless modem equipped with the card, a single module can simultaneously use a wireless modem and a mobile phone, and can significantly reduce the unit cost of the terminal itself and run out of mobile phones. If you borrow a phone from your own phone module can be used to replace the other person's phone.

Claims (3)

안테나에서 수신된 알에프신호를 A/D가 가능한 범위내로 이득조절하는 알에프 처리부와,An RF processing unit for controlling gain of the RF signal received from the antenna within an A / D enabled range; 상기 알에프 처리부에서 출력된 아이에프 신호를 A/D 변환하는 아이에프 처리부와,An IF processor which performs A / D conversion on the IF signal output from the RF processor; 상기 아이에프 처리부에서 출력된 디지털 음성 신호를 재생하여 외부 코덱에게 전송하는 기저대역 처리부와,A baseband processor for reproducing and transmitting a digital voice signal output from the IF processor to an external codec; 데이타를 저장하는 램,롬,이피롬부를 모듈로 구성한 것을 특징으로 하는 착탈가능한 CDMA 카드.Removable CDMA card, characterized in that the RAM, ROM, Epi-ROM unit for storing data as a module. 안테나에서 수신된 알에프신호를 A/D가 가능한 범위내로 이득조절하는 알에프 처리부와,An RF processing unit for controlling gain of the RF signal received from the antenna within an A / D enabled range; 상기 알에프 처리부에서 출력된 아이에프 신호를 A/D 변환하는 아이에프 처리부와,An IF processor which performs A / D conversion on the IF signal output from the RF processor; 상기 아이에프 처리부에서 출력된 디지털 음성 신호를 재생하여 외부 코덱에게 전송하는 기저대역 처리부와,A baseband processor for reproducing and transmitting a digital voice signal output from the IF processor to an external codec; 데이타를 저장하는 램,롬,이피롬부를 모듈로 구성한 CDMA 카드와,A CDMA card configured with a RAM, ROM, and Epirom unit for storing data as a module; 상기 CDMA 카드가 장착되기 위한 인터페이스 커넥터로 구성된 것을 특징으로 하는 휴대폰.And a interface connector for mounting the CDMA card. 안테나에서 수신된 알에프신호를 A/D가 가능한 범위내로 이득조절하는 알에프 처리부와,An RF processing unit for controlling gain of the RF signal received from the antenna within an A / D enabled range; 아이에프 신호를 A/D 변환하는 아이에프 처리부와,An IF processor which performs A / D conversion on the IF signal, 디지털 음성 신호를 재생하여 외부 코덱전송하는 기저대역 처리부와,A baseband processor for reproducing a digital voice signal and transmitting an external codec; 데이타를 저장하는 램,롬,이피롬부를 모듈로 구성한 CDMA 카드와,A CDMA card configured with a RAM, ROM, and Epirom unit for storing data as a module; 상기 카드가 장착되고 측면에는 상기 카드의 온오프를 제어하는 스위치를 포함하는 CDMA 플랫폼 카드가 장착된 것을 특징으로 하는 무선모뎀.And a CDMA platform card mounted on the side of the card and including a switch for controlling the on / off of the card.
KR10-2001-0010546A 2001-02-28 2001-02-28 The detachable CDMA card and the cellular phone and the wireless modem including the card KR100437256B1 (en)

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