WO2001022643A2

WO2001022643A2 - Card device for wireless data communication

Info

Publication number: WO2001022643A2
Application number: PCT/KR2000/001048
Authority: WO
Inventors: Kyung-Min You
Original assignee: Intertelecom Co., Ltd.
Priority date: 1999-09-20
Filing date: 2000-09-19
Publication date: 2001-03-29
Also published as: JP2001169361A; AU7455900A; WO2001022643A3

Abstract

Disclosed is a wireless communication device which comprises an antenna (10) receiving signals transmitted from the outside and transmitting data to the outside; a frequency converter (20) converting RF signals into IF signals or converting IF signals into RF signals; a Tx/Rx data processor (30) converting the IF signals and inner data signals into base band signals; a storage device (40) storing a system operating program and the signals converted by the Tx/Rx data processor; a controller (50) controlling operations of the frequency converter (10) and the Tx/Rx data processor (30) according to the program stored in the storage device (40), formatting the base band signals into signals of a first format, providing the formatted data to the main body through the first bus slot provided on the main body, formatting the data into formats for wireless transmission, and providing the formatted data to the Tx/Rx data processor (30); and a power supply (70) supplying power to respective parts, the frequency converter, the Tx/Rx data processor, the storage device and the controller.

Description

A Card Device for Wireless Data Communications and A Wireless Communication Device Connected with the Card Device

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention relates to a communication device. More

specifically, the present invention relates to a card device for receiving data

and processing wireless data, and a wireless communication device

connected with the card device.

(b) Description of the Related Art

In general, as computer techniques have developed, data

processing and communication functions have become more important.

Computers are categorized as desktop computers and portable computers.

Portable computers have a merit of performing computer functions without

location limitations, and they have a battery for supplying power. Desktop

computers are limited by location, but they are cheaper than portable

computers.

As communication techniques have developed, portable computers

have been connected more and more to digital cell phones or personal

communication terminals (hereinafter, these will be referred to as cell

phones) without using a modem, and they transmit and receive data.

Desktop computers transmit and receive data using cable communication

lines, that is, telephone lines and local area network (LAN) lines.

However, since portable computers must be connected to cell phones to transmit and receive data, if a user does not carry a cell phone, he

cannot execute data communication. When the user connects the portable

computer with the cell phone in order to communicate, the portable computer

uses the power from the battery of the cell phone, and therefore the user

cannot perform lengthy communication. Further, in the case whereby a

modem is not installed or not connected to the LAN, general computers

cannot perform data communication.

Conventional portable computers can only perform data

communications, and cannot call persons using voice data. That is, the

conventional portable data communication apparatus can perform

communications using text messages, but cannot perform voice

communication with cell phones.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a wireless data

communication card in order for a device coupled to this card to perform

wireless data communications, transmit voice data as wireless signals,

receive wireless voice signals, and output analog voice signals.

In one aspect of the present invention, in a card device including a

central processing unit (CPU) controlling a whole system, converting data

received in a wireless manner into a first bus standard, and converting data

to be transmitted into data of a wireless transmission standard, a power

supply supplying the power, and a first bus connected to the CPU and providing paths of signals, and coupled to a data communication device in

which a first bus slot of the first bus standard is installed, a wireless data

communication card device comprises a frequency converter being

controlled by the CPU, being operated according to the power supplied by

the power supply, and converting received radio frequency (RF) signals into

intermediate frequency (IF) signals or converting IF signals into RF signals;

and a transmit/receive (Tx/Rx) data processor being controlled by the CPU,

being operated according to the power supplied by the power supply, and

converting the IF signals converted by the frequency converter as well as

inner data signals to be transmitted into base band signals.

The device further comprises an antenna receiving the signals

transmitted from the outside, outputting the signals to the frequency

converter and transmitting the data to the outside.

The device further comprises a storage device storing a system

operating program and storing the signals converted by the Tx/Rx data

processor.

In another aspect of the present invention, in a card device

including a CPU controlling a whole system, a power supply supplying the

power, and a first bus connected to the CPU and providing paths of signals,

coupled to a device in which a first bus slot of the first bus standard is

installed, a wireless data communication card device comprises: an antenna

receiving the signals transmitted from the outside and transmitting the data

to the outside; a frequency converter converting received RF signals into IF

signals or converting IF signals into RF signals; a Tx/Rx data processor converting the IF signals converted by the frequency converter as well as

inner data signals to be transmitted into base band signals; and a controller

controlling operations of the frequency converter and the Tx/Rx data

processor, converting the base band signals into signals of the first bus

standard, providing the converted data to the main body of the device

through the first bus slot, converting the data to be transmitted into formats

for wireless transmission, and providing the converted data to the Tx/Rx

data processor.

The device further comprises an interface, that when an output port

of the controller does not correspond to the first bus standard, converts the

signals which are connected to the output port of the controller and are

output by the controller into signals of the first bus standard, and outputs the

converted signals to the first bus slot.

The device further comprises a storage unit storing a system

operating program and storing the signals converted by the Tx/Rx data

processor.

The device further comprises a port connected to a cable line, and

an Ethernet driver converting the packet signals provided through the cable

line into a data format to be read by the controller, and outputting the

converted data to the controller.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the

invention, and, together with the description, serve to explain the principles

of the invention:

FIG. 1 shows a block diagram of a wireless communications device

coupled to a wireless data communications card device according to a first

preferred embodiment of the present invention;

FIG. 2 shows a block diagram of a wireless communications device

coupled to a wireless data communications card device according to a

second preferred embodiment of the present invention;

FIG. 3 shows a block diagram of a wireless communications device

coupled to a wireless data communications card device according to a third

preferred embodiment of the present invention;

FIG. 4 shows a computer coupled to a wireless data communications

card device and therefore being capable of wireless communications

according to preferred embodiments of the present invention;

FIG. 5 shows a block diagram of a wireless communications device

coupled to a wireless data communications card device according to a fourth

preferred embodiment of the present invention; and

FIG. 6 shows a block diagram of a wireless communication device

according to a fifth preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following detailed description, only the preferred embodiments of the invention has been shown and described, simply by way of illustration

of the best modes contemplated by the inventor(s) of carrying out the

invention. As will be realized, the invention is capable of modification in

various obvious respects, all without departing from the invention.

Accordingly, the drawings and description are to be regarded as illustrative in

nature, and not restrictive.

FIG. 1 shows a block diagram of a configuration of a wireless

communication portable computer according to a first preferred embodiment

of the present invention.

As shown in FIG. 1 , the wireless communication portable computer

according to the first preferred embodiment of the present invention

comprises an antenna 10, a frequency converter 20, a transmit/receive

(Tx/Rx) data processor 30, a memory 40, a controller 50, an interface 60, a

power supply 70, a personal computer memory card international association

(PCMCIA) slot 80, a random access memory (RAM) 90, and a central

processing unit (CPU) 100.

Here, the frequency converter 20, the transmit/receive (Tx/Rx) data

processor 30, the memory 40, the controller 50 and the interface 60 are

installed in the PCMCIA card and coupled to the PCMCIA slot 80. The

antenna 10 is installed on a predetermined part of the PCMCIA card, that is,

on a part opposite the PCMCIA slot 80. Here, a skilled person can install the

antenna 10 in an outer part of the computer according to the preferred

embodiment of the present invention and can electrically couple the antenna

10 to the PCMCIA card. With reference to FIG. 1 , a case of receiving the wireless signals will

now be described.

The antenna 10 receives the transmitted wireless signals and

provides the signals to the frequency converter 20. Here, the wireless signals

are standardized frequency band signals for personal telephone calls, and

are used for personal cell phones. For example, in Korea, service providers

such as SK Telecom, LG Information & Communication and Hansol PCS use

wireless radio frequency (RF) signals like the above-noted wireless signals

for communication networks. Here, the cell phones use forward-direction

frequencies directing from a base station to mobile stations, that is, RF

signals with ranges of 824 ~ 849 MHz, and personal communication services

(PCS) use frequencies with ranges of 1 ,750 ~ 1 ,780 MHz. Cell phones use

reverse-direction frequencies directing from mobile stations to a base station,

that is, the RF signals with ranges of 869 ~ 894 MHz, and PCS use the

frequencies with the ranges of 1 ,840 ~ 1 ,870 MHz.

However, these wireless signals are not restricted to the above-

exemplified communication frequency bands and can include the frequency

bands of other channels enabling wireless communications.

Here, for a better comprehension of the present invention, a

computer capable of wireless data transmission and receiving according to

the preferred embodiments of the present invention uses the PCS frequency

bands and adopts the code division multiple access (CDMA) transmission

method.

The frequency converter 20 is installed in a main body of the computer, receives power from the power supply 70 supplying the power to

all the parts of the computer, passes the RF signals provided by the antenna

10 through a band pass filter so as to pass the desired signals, thereby

making noise-removed RF signals, and it converts the RF signals into

intermediate frequency (IF) signals by using differences between the RF

signals and oscillation frequencies, and it also provides IF signals to the

Tx/Rx data processor 30.

The Tx/Rx data processor 30 then multiplies the band spread IF

signals by a pseudorandom noise (PN) of the Tx/Rx data processor 30

together with a carrier wave so as to obtain a correlation value, performs a

deinterleaving process on these signals, and converts the signals into base

band data by using a voice decoder.

The base band data converted by the Tx/Rx data processor 30 are

temporarily stored in the memory 40. The memory 40 stores a program for

the controller 50 to perform fundamental operations, and outputs information

to the controller 50 according to read signals applied by the controller 50.

The controller 50 controls the whole system, and when the power is

supplied, initializes the respective parts 20 and 30 comprising the PCMCIA

card according to the program read from the memory 40, and performs

fundamental control operations. The controller 50 converts the base band

signals read from the memory 40 so as to fit the PCMCIA standards, and

then stores the converted base band signals in the RAM 90 through the

interface 60 and the PCMCIA slot 80. The PCMCIA slot 80 is provided at a

predetermined position of the portable computer in order for the PCMCIA card to be inserted. For example, the PCMCIA slot 80 is formed on the left,

right, or front of the portable computer.

The CPU 100 outputs the read signals from the RAM 90, and reads

and determines the base band data stored in the RAM 90. The CPU 100

then performs the control operation of signal processing, and stores the data

in the corresponding addresses of the memory (not illustrated) according to

categories of the data, or displays the data on a screen of a monitor in order

for the user to confirm the data.

Here, the interface 60 outputs the data which are converted into the

PCMCIA standards by the controller 50 so as to fit to the PCMCIA standards.

That is, the interface 60 is applied when output ports of the controller 50 do

not fit the PCMCIA standards.

If the output ports of the controller 50 fit the PCMCIA standards, the

interface 60 (shown as dotted lines in FIG. 1 ) is not used, and the outputs of

the controller 50 are stored in the RAM 90 directly through the PCMCIA slot

80.

The power supply 70 supplies the power to the frequency converter

20, the Tx/Rx data processor 30, the memory 40, the controller 50, the RAM

80, the CPU 100 and other parts of the main body of the computer.

Referring to FIG. 1 , a case for transmitting the wireless signals will

now be described.

A user request signal according to a manipulation of a keyboard is

input to the CPU 100. The CPU 100 determines the data corresponding to

the user request signal, reads the determined data from a memory (not illustrated), stores the data in the RAM 90, and provides the data to the

controller 50 through the PCMCIA slot 80 and the interface 60 so that the

wireless communications can be performed according to the user's requests.

At this time, the data provided through the interface 60 are converted by the

CPU 100 so as to perform data communications with the controller 50.

The controller 50 stores the data provided through the interface 60 in

the memory 40 if needed, reads the data from the memory 40, converts the

data into digital base band data for transmission, and then outputs the

converted data to the Tx/Rx data processor 30.

The Tx/Rx data processor 30 encodes and interleaves the digital

base band data for transmission, and multiplies the interleaved signals by

the PN and the carrier frequency components for transmission in the wireless

area so as to generate IF signals, and outputs the IF signals to the frequency

converter 20. The frequency converter 20 then performs a band pass filtering

on the IF signals so as to generate RF signals, and transmits the data

signals to corresponding remote places through the antenna 10.

Here, the above descriptions are related to the wireless transmission

and receiving method according to the CDMA method, and further, persons

skilled in the art can use time division multiple access (TDMA), frequency

division multiple access (FDMA) and group special mobile (GSM) as well as

the CDMA.

Persons skilled in the art can convert the PCMCIA standards into

mini peripheral component interconnect (PCI) standards or universal serial

bus (USB) standards, convert the interface 60 to fit to the mini PCI standards or USB standards, and use a mini PCI slot or USB port instead of the

PCMCIA slot 80 to gain effects identical with the first preferred embodiment

of the present invention. Here, other bus standards besides the above-noted

ones can also be used.

Referring to FIG. 2, a computer capable of wireless data

transmission and receiving, coupled to the wireless data communication card

device according to a second preferred embodiment of the present invention,

will now be described.

FIG. 2 shows a simplified block diagram of a configuration of a

portable computer capable of wireless data transmission and receiving

according to a second preferred embodiment of the present invention. Here,

referring to FIGs. 1 and 2, identical reference numerals indicate identical

operations, except that the CPU of FIG. 2 includes the operations of the CPU

and the controller of FIG. 1.

As shown in FIG. 2, the portable computer capable of wireless data

transmission and receiving according to the second preferred embodiment of

the present invention comprises an antenna 10, a frequency converter 20, a

Tx/Rx data processor 30, a memory 40, a CPU 100, a power supply 70, a

PCMCIA slot 80 and a RAM 90.

Here, the frequency converter 20, the Tx/Rx data processor 30 and

the memory 40 are installed on the PCMCIA card and coupled to the

PCMCIA slot 80.

Referring to FIG. 2, an operation of receiving wireless data will now

be described. The antenna 10 receives the transmitted RF wireless signals and provides the same to the frequency converter 20. At this time, the RF

wireless signals are identical with the wireless signals according to the first

preferred embodiment of the present invention.

The frequency converter 20 passes the RF signals provided by the

antenna 10 through a band pass filter so as to pass desired signals, thereby

making noise-removed RF signals, converts the RF signals into intermediate

frequency (IF) signals by using differences between the RF signals and

oscillation frequencies, and provides the IF signals to the Tx/Rx data

processor 30.

The Tx/Rx data processor 30 then multiplies the band passed IF

signals by a pseudorandom noise (PN) of the Tx/Rx data processor 30

together with a carrier wave so as to obtain a correlation value, performs a

deinterleaving process on these signals, and converts the signals into base

band data by using a voice decoder.

The base band data converted by the Tx/Rx data processor 30 are

temporarily stored in the memory 40. The memory 40 stores a program for

initializing the frequency converter 20 and the Tx/Rx data processor 30 when

the power is supplied, and outputs information to the CPU 100 according to

the read signals applied by the CPU 100.

Here, the CPU 100 controls the frequency converter 20, the Tx/Rx

data processor 30 and the memory 40 as well as other parts installed in the

main body of the computer. In other words, the CPU 100 is a processor unit

as installed in all computers.

However, the CPU 100 according to the second preferred embodiment of the present invention, differing from the CPUs of general

computers, when the PCMCIA card is coupled to the PCMCIA slot 80,

detects this coupling, reads the program stored in the memory 40, initializes

the frequency converter 20 and the Tx/Rx data processor 30, and controls

the operation of the frequency converter 20 and the Tx/Rx data processor 30.

The CPU 100 reads the base band signals converted by the Tx/Rx data

processor 30 and stored in the memory 40, converts the signals to fit

PCMCIA standards, and stores the signals in the RAM 90 through the

PCMCIA slot 80.

The PCMCIA slot 80 is provided on a predetermined position of the

portable computer in order for the PCMCIA card to be inserted. For example,

the PCMCIA slot 80 is formed on the left, right, or front of the portable

computer.

The CPU 100 outputs the read signals from the RAM 90, and reads

and determines the base band data stored in the RAM 90. The CPU 100

then performs the control operation of signal processing, and stores the data

in the corresponding addresses of the memory (not illustrated) according to

categories of the data, or displays the data on a screen of a monitor in order

for the user to confirm the data.

The power supply 70 supplies the power to the frequency converter

20, the Tx/Rx data processor 30, the memory 40, the RAM 80, the CPU 100

and other parts of the main body of the computer.

Referring to FIG. 2, a case for transmitting the wireless signals will

now be described. A user request signal according to a manipulation of a keyboard is

input to the CPU 100. The CPU 100 determines the corresponding data

corresponding with the user request signal, reads the determined data from

a memory (not illustrated), stores the data in the RAM 90, and provides the

data to the controller 50 through the PCMCIA slot 80 and the interface 60 so

that wireless communications can be performed according to the user^'s

requests.

The CPU 100 reads the data stored in the memory 40, converts the

data into digital base band data for transmission, and outputs the converted

data to the Tx/Rx data processor 30.

The Tx/Rx data processor 30 encodes and interleaves the digital

base band data for transmission, and multiplies the interleaved signals by

the PN and the carrier frequency components for transmission in the wireless

area so as to generate IF signals, and outputs the IF signals to the frequency

converter 20. The frequency converter 20 then performs a band pass filtering

on the IF signals so as to generate RF signals, and transmits the data

signals to the corresponding remote places through the antenna 10.

Persons skilled in the art can convert the data to be input to the CPU

100 into mini PCI standards, convert the outputs of the controller 50 to fit

PCI or USB standards, and use the mini PCI slot or the USB port instead of

the PCMCIA slot 80 so as to obtain the effects identical with the first

preferred embodiment of the present invention.

Referring to FIG. 3, a portable computer capable of wireless

communications coupled to a wireless data communication card device according to a third preferred embodiment of the present invention will be

described.

FIG. 3 shows a simplified block diagram of the portable computer

according to the third preferred embodiment of the present invention. As

shown, the portable computer comprises a frequency converter 20, a Tx/Rx

data processor 30, a memory 40, a CPU 50, a power supply 70, a PCMCIA

slot 80, a RAM 90, an Ethernet driver 1000 and a converter 1100.

Here, the operations and configuration according to the third

preferred embodiment of the present invention are generally identical with

those according to the second preferred embodiment of the present

invention. However, in order to perform both wireless and wire data

communications, differing from the second preferred embodiment of the

present invention, the signals are transmitted through cable lines such as

unshielded twisted pair (UTP), coaxial, or fiber optic cables, they are passed

through the converter 1100, and the Ethernet driver 1000 (or a LAN driver)

converts the packet data into a data format to be read by the controller 50,

and outputs the converted data.

Therefore, when receiving wireless data signals provided through the

antenna 10 or receiving cable data signals through the Ethernet driver 1000,

the controller 50 of the third preferred embodiment of the present invention

determines whether the input signals are packet data of the Ethernet format

or wireless data, and executes different processing of receiving or

transmitting signals according to whether the signals are wire or wireless

data signals. Accordingly, the third preferred embodiment of the present invention

enables both wire and wireless data communications.

A skilled person can use two processors, that is, a controller and a

CPU so as to perform wire and wireless data communications with reference

to the first and second preferred embodiments of the present invention. That

is, the controller, installed in the configuration of the PCMCIA, controls the

frequency converter 20, the Tx/Rx data processor 30 and the memory 40.

The CPU controls the devices installed in the main body of the computer.

A skilled person can convert the received data signals so as to fit

PCI standards and to enable wireless data transmission and receiving.

FIG. 4 shows a perspective drawing of a portable computer capable

of wireless communications coupled to a wireless data communication card

device according to the preferred embodiments of the present invention. As

shown in the first to third preferred embodiments of the present invention, the

PCMCIA slot 80 is provided on the right side of the main body, and a cable

communication line, that is, a telephone line or LAN line, can be provided on

the right side of the main body.

The PCMCIA card operates according to the power provided by a

power supply (a battery) installed in the main body of the computer.

Here, in the first to third preferred embodiments of the present

invention, the PCMCIA can be configured excluding the memory 40. That is,

the RAM or ROM installed in the main body of the computer can be

substituted for the memory 40.

The portable computer of the present invention itself and the PCMCIA card can be assigned a specific communication code. In the case

the portable computer is assigned the specific communication code, if the

user carries the portable computer while moving and couples the PCMCIA

card according to the present invention to the portable computer, the user

can perform wireless data communications. Further, in the case when the

PCMCIA card is assigned the specific communication code, if the user

carries the PCMCIA card while moving and couples the PCMCIA card to the

portable computer, the user can perform wireless data communications.

FIG. 5 shows a simplified block diagram of a desktop computer

capable of wireless data transmission and receiving coupled to a wireless

data communication card device according to a fourth preferred embodiment

of the present invention.

As shown, the desktop computer comprises an antenna 100, a

frequency converter 200, a Tx/Rx data processor 300, a memory 400, a

controller 500, a USB converter 600, a power supply 700, a USB port 800, a

RAM 900 and a CPU 1000.

An operation of the fourth preferred embodiment of the present

invention as configured above is identical with that of the first preferred

embodiment of the present invention.

However, in the fourth preferred embodiment of the present invention,

in order for the CPU 100 of the main body to read the received data, the

USB converter 600 converts the output data of the controller 500 to fit to the

USB standards, and these converted data are provided to the CPU 1000

through the USB port 800. Also, the data controlled by the CPU 1000 at the time of transmission are provided to the USB converter 600 through the USB

port 800 so as to be converted into data formats of wireless transmission.

Here, the antenna 100, the frequency converter 200, the Tx/Rx data

processor 300, the memory 400, the controller 500 and the USB converter

600 are installed in a single card, and the USB port 800 is provided on an

inner part of a slot provided on a predetermined position of the desktop

computer so as to be coupled to a card A. The antenna 100 can be

separated from the card A and can be installed at predetermined positions

such as the left, right or rear sides, or on the monitor.

The frequency converter 200, the Tx/Rx data processor 300, the

memory 400, the controller 500 and the USB converter 600 can be provided

on a single board so as to be coupled to the inner part of the main body.

A skilled person can remove the controller 500 of the card A in the

fourth preferred embodiment of the present invention and can make the CPU

100 concurrently work the functions of the controller 500. This is obvious

from the description of the second preferred embodiment of the present

invention, referring to FIG. 2. Hence, the desktop computer can perform

wireless data communications.

Further, the wireless data communication device can be applied to a

personal communication system (PCS) or personal digital assistant (PDA) as

well as to a computer which processes data.

FIG. 6 shows a simplified block diagram of a portable computer

capable of wireless calls according to a fifth preferred embodiment of the

present invention. A portable computer capable of wireless calls according to the fifth

preferred embodiment of the present invention can either be coupled to the

wireless data communication card device of the first to third preferred

embodiments of the present invention, or not. This connection state can be

changed according to the will of manufacturers.

As shown in FIG. 6, the portable computer enabling calls according

to the fifth preferred embodiment of the present invention comprises a

speaker 100, a microphone 200, a CPU 300, an audio codec 400, a PCI

bridge 500, a RAM 600, a PCMCIA bridge 700, a slot 800 and a wireless

modem 900.

Here, the audio codec 400, the PCI bridge 500, the RAM 600 and

the PCMCIA bridge 700 are coupled to each other through a PCI bus.

The speaker 100 and the microphone 200 respectively amplify the

input analog voice signals to a predetermined level of gain and output the

signals.

The audio codec 400 converts the analog voice signals into data

fitting PCI bus standards, or converts the voice signals of the PCI standards

into analog voice signals and outputs the signals.

The RAM 600 temporarily stores the voice data input through the

PCI bus.

The CPU 300 outputs control signals to control the whole system,

and the PCI bridge 500 converts the outputs of the CPU to fit to the PCI bus

standards or converts the signals input through the PCI bus into signals to be

processed by the CPU 300. The PCMCIA bridge 700 converts the data input through the PCI bus

into the data fitting PCMCIA standards or converts the data of the PCMCIA

standards into PCI standards.

The PCMCIA slot 800 is provided so it can be coupled to the

PCMCIA bridge 700 in order for the PCMCIA bridge 700 and the wireless

modem 900 to be electrically connected.

The wireless modem 900 transmits the data of the PCMCIA

standards input through the PCMCIA bridge 700 in a wireless manner, and

processes the received wireless signals.

Referring to FIG. 6, an operation of the portable computer, capable

of wireless calls, coupled to the wireless data communication card device

according to the fifth preferred embodiment of the present invention, will now

be described.

When a user inputs his voice through the microphone 200, the user's

voice is amplified to a predetermined level of gain and input to the audio

codec 400.

The audio codec 400 removes noises of the amplified analog voice

of the user by a filtering process, and encodes the voice to fit PCI standards.

Therefore, the signals output from the audio codec 400 become digital data

signals of the PCI standards.

These data signals of the PCI standards are provided to the PCMCIA

bridge 700 through the PCI bus and then are stored in the RAM 600.

The data signals stored in the RAM 600 are re-input to the audio

codec 400 through the PCI bus according to the control signals output from the CPU 300, and as the audio codec 400 converts the input signals into

analog voice signals, the data signals are output to the speaker 100. In other

words, the voice data stored in the RAM 600 can be randomly reproduced.

The PCMCIA bridge 700 receives the output data of the audio codec

400 provided through the PCI bus, converts the data into data of the

PCMCIA standards, and outputs the data. At this time, since the PCMCIA

bridge 700 is coupled to the PCMCIA slot 800, the PCMCIA bridge 700

outputs the output signals to the wireless modem 900 through the PCMCIA

slot 800.

The wireless modem 900 modulates the input digital data signals of

the PCMCIA standards to the signals of a corresponding protocol, and

outputs the signals in the wireless manner. Here, an antenna is obviously

installed in the present invention.

As the voice data of the user are input through the microphone 200,

the CPU 300 outputs a control signal to process the voice data according to

a predetermined routine to the audio codec 400 and the RAM 600. At this

time, the control signal output from the CPU 300 does not correspond to PCI

standards. Hence, the PCI bridge 500 converts the control signal of the CPU

300 to fit PCI standards.

Here, a skilled person can change the PCI standards with mini PCI

standards, they need not use the PCI bridge 500 by using the CPU having

the outputs fitting to the PCI standards, and they can freely operate the

system managements by randomly changing the signal standards.

Therefore, the user can transmit voice data to the place of dispatch by using the portable computer according to the preferred embodiment of the

present invention.

When receiving wireless voice data from a sender, the wireless

modem modulates the received voice data to digital signals of the PCMCIA

standards, and outputs the signals to the PCMCIA bridge 700 through the

PCMCIA slot 800.

The PCMCIA bridge 700 converts the input voice data of the

PCMCIA standards into voice data of the PCI standards, and provides the

data to the PCI bridge 500 through the PCI bus. The PCI bridge 500

converts the input voice data of the PCI standards into data of a standard to

be processed by the CPU 300, and outputs the data to the CPU 300.

The CPU 300 then determines the input signals, controls the audio

codec 400 according to the determination results, and converts the voice

data of the PCI standards into analog voice data.

The analog voice data converted by the audio codec 400 are

provided to the speaker 100, and the speaker 100 amplifies the input signals

and outputs the signals. At this time, the RAM 600 receives the voice data

output from the PCMCIA bridge 700 through the PCI bus and stores the data.

Therefore, the portable computer according to the preferred

embodiment of the present invention enables voice communications. Here, a

skilled person can add reproduction and recording functions executed by a

cassette tape player so as to record the voice data which the user transmits

to the sender or the sender transmits to the user and so that the user can

hear the data at any desired time. In the case a wireless modem is not installed in the portable

computer, the portable computer according to the preferred embodiment of

the present invention is coupled to a cell phone so as to perform wireless

data transmission and receiving. At this time, the signals output by the

PCMCIA bridge 700 through the PCMCIA slot 800 are transmitted to the cell

phone so that the cell phone outputs these output signals in the wireless

manner.

The device capable of wireless data transmission and receiving of

the present invention can be applied to portable wireless communication

devices performing wireless data communications, such as a PDA, as well

as a computer.

The present invention provides a wireless data communication card

device, enables wireless data communications using the card device, and

enables wireless calls.

While this invention has been described in connection with what is

presently considered to be the most practical and preferred embodiment, it is

to be understood that the invention is not limited to the disclosed

embodiments, but, on the contrary, is intended to cover various modifications

and equivalent arrangements included within the spirit and scope of the

appended claims.

Claims

WHAT IS CLAIMED IS:

1. In a card device including a central processing unit (CPU)

controlling a whole system, converting data received in a wireless manner

into a first bus standard, and converting data to be transmitted into data of a

wireless transmission standard, a power supply supplying power, and a first

bus connected to the CPU and providing paths of signals, coupled to a data

communication device in which a first bus slot of the first bus standard is

installed, a wireless data communication card device, comprising:

a frequency converter being controlled by the CPU, being operated

according to the power supplied by the power supply, and converting

received radio frequency (RF) signals into intermediate frequency (IF)

signals or converting IF signals into RF signals; and

a transmit/receive (Tx/Rx) data processor being controlled by the

CPU, being operated according to the power supplied by the power supply,

and converting the IF signals converted by the frequency converter as well

as inner data signals to be transmitted into base band signals.

2. The device of claim 1 , wherein the device further comprises an

antenna receiving the signals transmitted from the outside, outputting the

signals to the frequency converter and transmitting the data to the outside.

3. The device of claim 1 , wherein the device further comprises a

storage device storing a system operating program and storing the signals

converted by the Tx/Rx data processor.

4. The device of claim 1 , wherein the first bus standard is the

personal computer memory card international association (PCMCIA) standard.

5. The device of claim 1 , wherein the first bus standard is the mini

peripheral component interconnect (PCI) standard.

6. The device of claim 1 , wherein the first bus standard is the

universal serial bus (USB) standard.

7. The device of claim 1 , wherein the Tx/Rx data processor

modulates the IF signals by multiplying a spread code which is identical with

the spread code of the transmitter and modulates the inner data signals to be

transmitted by multiplying the spread code when the IF signals converted by

the frequency converter are modulated by the code division multiple access

(CDMA) method.

8. In a card device including a central processing unit (CPU)

controlling a whole system, a power supply supplying power, and a first bus

connected to the CPU and providing paths of signals, coupled to a device in

which a first bus slot of the first bus standard is installed, a wireless data

communication card device, comprising:

an antenna receiving the signals transmitted from the outside and

transmitting the data to the outside;

a frequency converter converting received radio frequency (RF)

signals into intermediate frequency (IF) signals or converting IF signals into

RF signals;

a transmit/receive (Tx/Rx) data processor converting the IF signals

converted by the frequency converter as well as inner data signals to be

transmitted into base band signals; and a controller controlling operations of the frequency converter and the

Tx/Rx data processor, converting the base band signals into signals of the

first bus standard, providing the converted data to the main body of the

device through the first bus slot, converting the data to be transmitted into

formats for wireless transmission, and providing the converted data to the

Tx/Rx data processor.

9. The device of claim 8, wherein the device further comprises an

interface, that when an output port of the controller does not correspond to

the first bus standard, converts the signals which are connected to the output

port of the controller and are output by the controller into signals of the first

bus standard, and outputs the converted signals to the first bus slot.

10. The device of claim 8, wherein the device further comprises a

storage unit storing a system operating program and storing the signals

converted by the Tx/Rx data processor.

11. The device of claim 8, wherein the device further comprises a

port connected to a cable line, and an Ethernet driver converting the packet

signals provided through the cable line into a data format to be read by the

controller and outputting the converted data to the controller.

12. The device of claim 8, wherein the first bus standard is the

personal computer memory card international association (PCMCIA)

standard.

13. The device of claim 8, wherein the first bus standard is the mini

peripheral component interconnect (PCI) standard.

14. The device of claim 8, wherein the first bus standard is the universal serial bus (USB) standard.

15. The device of claim 8, wherein the Tx/Rx data processor

modulates the IF signals by multiplying a spread code which is identical with

the spread code of the transmitter and modulates the inner data signals to be

transmitted by multiplying the spread code when the IF signals converted by

the frequency converter are modulated by the code division multiple access

(CDMA) method.

16. A wireless communication device, comprising:

an antenna receiving signals transmitted from the outside and

transmitting the data to the outside;

a frequency converter converting radio frequency (RF) signals

received from the antenna into intermediate frequency (IF) signals or

converting IF signals into RF signals;

a transmit/receive (Tx/Rx) data processor converting the IF signals

converted by the frequency converter as well as inner data signals to be

transmitted into base band signals;

a storage device storing a system operating program and storing the

signals converted by the Tx/Rx data processor;

a controller controlling operations of the frequency converter and the

Tx/Rx data processor according to the program stored in the storage device,

formatting the base band signals into signals of a first format, providing the

formatted data to the main body of the device through the first bus slot

provided on the main body, formatting the data to be transmitted into formats

for wireless transmission, and providing the formatted data to the Tx/Rx data processor; and

a power supply supplying power to respective parts, the frequency

converter, the Tx/Rx data processor, the storage device and the controller,

wherein the frequency converter and the Tx/Rx data processor are

installed in a wireless data communication card device coupled to the first

bus slot.

17. The device of claim 16, wherein the controller is a central

processing unit (CPU) installed in the main body of the device.

18. The device of claim 16, wherein the device further comprises an

interface, that when an output port of the controller does not correspond to

the slot standard, converts the signals which are connected to the output port

of the controller and are output by the controller into the signals of a first

format to fit to the slot standard and outputs the converted signals, and being

built into the card device.

19. The device of claim 16, wherein the first bus standard is the

personal computer memory card international association (PCMCIA)

standard, and the first bus slot is a PCMCIA slot.

20. The device of claim 16, wherein the first bus standard is the mini

peripheral component interconnect (PCI) standard, and the first bus slot is a

mini PCI slot.

21. The device of claim 16, wherein the first bus standard is the

universal serial bus (USB) standard, and the first bus slot is a USB port.

22. The device of claim 16, wherein the card device further

comprises the controller.

23. The device of claim 22, wherein the card device further

comprises a port connected to a cable line, and an Ethernet driver converting

the packet signals provided through the cable line into a data format to be

read by the controller and outputting the converted data to the controller.

24. The device of claim 16, wherein the Tx/Rx data processor

modulates the IF signals by multiplying a spread code which is identical with

the spread code of the transmitter and modulates the inner data signals to be

transmitted by multiplying the spread code when the IF signals converted by

the frequency converter are modulated by the code division multiple access

(CDMA) method.

25. A wireless communication device, comprising:

a voice input unit receiving a user's voice data and amplifying the

voice data to a predetermined gain;

a voice output unit amplifying analog voice signals and outputting the

voice signals;

an audio codec encoding the analog voice data input through the

voice input unit so as to convert the voice data into digital voice signals, and

converting the digital voice data into analog voice data and outputting the

analog voice data to the voice output unit;

a storage device temporarily storing the digital voice data; and

a central processing unit (CPU) controlling the whole system, and

thereby controlling the voice input unit, the voice output unit, the audio codec

and the storage device according to a program so as to transmit the voice

data in a wireless manner, and outputting the received voice data in the analog voice data format.

26. The device of claim 25, wherein the device further comprises a

wireless modem modulating the digital voice signals input from the audio

codec to the data corresponding to a predetermined protocol, transmitting

the modulated signals in the wireless manner, and demodulating the

received voice data.

27. The device of claim 25, wherein the device further comprises:

a frequency converter being controlled by the CPU, being operated

according to the power supplied by the power supply, and converting

received radio frequency (RF) signals into intermediate frequency (IF)

signals or converting the IF signals into RF signals; and

a transmit/receive (Tx/Rx) data processor being controlled by the

CPU, being operated according to the power supplied by the power supply,

and converting the IF signals converted by the frequency converter as well

as inner data signals to be transmitted into base band signals.

28. The device of claim 27, wherein the Tx/Rx data processor

modulates the IF signals by multiplying a spread code which is identical with

the spread code of the transmitter and modulates the inner data signals to be

transmitted by multiplying the spread code when the IF signals converted by

the frequency converter are modulated by the code division multiple access

(CDMA) method.