Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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DATA TRANSMISSION SYSTEM USING RADIO TRANSCEIVERS
TECHNICAL FIELD
The present invention relates to a data transmission system using
radio transceivers and, more particularly, to a innovative data
transmission system without dedicated communication lines using radio
transceivers so that the cost of operation and maintenance of the system
can be reduced and the security of transmitted informations can be
guaranteed.
BACKGROUND OF THE INVENTION
Recently, with the spread of cellular phones, character transmission
services that enable character data to be transmitted between cellular
phones have been available. In the character transmission services,
characters input to a cellular phone by a user are encoded into character
data in the processor of the cellular phone and then transmitted to
another user's cellular phone through a relay center of a cellular phone
company. In another user's cellular phone, the received character data are
decoded into characters in the processor of another user's cellular phone
and the characters are displayed on a display portion of the cellular
phone.
And also, recently, on account of the functions of individual radio
transceivers such as cellular phones that are available to character
transmission services, a number of character transmission services which
transmits short texts such as Internet e-mail, stock information, and
weather forecasts have been developed and provided.
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Fig. 1. represents a block diagram of a conventional data
transmission system for the character services, and is illustrative of an
example of a data transmission system transmitting Internet e-mail to a
user's cellular phone. The data transmission system consists of carrier 2
such as cellular phone company, relay company 4 connected to carrier 2,
and server 6 operated by information provider (IP) 8. The server 6 serves
as a E-mail server when users or client transmit e-mail through Internet.
The relay company 9 is connected to respective carrier 2 through
dedicated communication line in order to connect each other at any time,
and the IP 8 is connected to the relay company 4 through Internet.
Thus, in case that user connects with Internet and send a e-mail
through Internet to the server 6 with his Internet terminal b, the server 6
transmits the e-mail to relay company 4. And then the relay company
classifies the received e-mail transmitted by the server 6 and transmits
the e-mail in the form of character data to the corresponding carrier 2.
Upon the receipt of the character data, each carrier 2 encodes the
received character data and transmits the data to each user's cellular
phone 10 through his owned relay center. Finally, the data which are
transmitted to user's cellular phone 10 are decoded and displayed in the
form of characters.
According to the types of IP' s 8, the above mentioned data
transmission system can be broadly used to applications such as
transmissions of bank account details, stock information service of
security company, credit transaction details of credit card company, work
orders of transportation company as well as e-mail transmission.
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But, the above mentioned data transmission system has problems.
One of the problems is that the construction of the above mentioned data
transmission system is not only complicated and also increases cost for
dedicated communication line 11 because the relay company 4 and the
carrier 2 are always connected with the dedicated communication line 11.
And another problem is security problem, that is, the content of e-mail is
exposed to the relay company 4 and the carrier 2 because the e-mail are
supplied in the form of characters.
Particularly, when the data communication systems are used in
banks, stock companies, credit card companies, and transportation
companies and so on, the problem about secret preservation between
clients and companies is very critical since client's account details,
company secret, working status and so on are completely revealed to
relay company 4 or carrier 2.
Therefore, a new concept of data transmission system is needed to
reduce cost as well as to be able to maintain secret.
SUMMARY OF THE IMVENTIOI\
In order to overcome the above-mentioned problems, an object of the
present invention is to provide a innovative data transmission system
using radio transceivers with which cost can be reduced without any
dedicated communication lines and which can maintain secrete for
transmitted information.
As a aspect of the present invention, in a data transmission system
for transmitting a predetermined data being provided by IP 8 to a first
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radio transceiver 10 of a receiving user side, the data transmission
system comprising:
a server 6 operated by the IP 8; and
a second radio transceiver 16 of a sending user side connected to
the server 6 ,
wherein the server 6 being provided with a control program to
control the second radio transceiver 16, and data of the server 6 input to
the radio transceiver 10 being transmitted to the radio transceiver 16
through a relay center 9 of a carrier.
Additional objects and advantages of the invention will be set forth
in the description which follows, and in part will be obvious from the
description, or may be learned by practice of the invention. The objects
and advantages of the invention may be realized and obtained by means
of the instrumentalities and combinations particularly pointed out in the
appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and constitute
a part of the specification, illustrate a presently preferred embodiment of
the present invention, and together with the general description given
above and the detailed description of the preferred embodiment given
below, serve to explain the principles of the present invention.
FIG. 1 is a view illustrating the conventional data transmission
system;
FIG. 2 is a view illustrating the conventional data transmission
system using a radio transceiver according to the embodiment of the
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present invention.
DETAILED DESCRIPTION OF THE INVENTION
There will now be described the preferred embodiments of the
present invention with reference to the accompanying drawings. Although
the present invention is described though the cellular phone
telecommunication system, the present invention is not limited to the
cellular phone telecommunication system and further applied to any
wireless or radio telecommunication system. The term " radio transceiver"
in the specification refers to a wireless or radio telecommunication
terminal such as cellular phone, CDMA and TDMA handsets, Iridium
handset, pager, international mobile telecommunication 2000(IMT-2000)
handset so on.
Fig. 2 is a view illustrating the conventional data transmission
system using a radio transceiver such as cellular phone according to the
embodiment of the present invention. With reference now to Fig 2., the
e-mail data transmission system using a radio transceiver 16 for
transmitting character data to the receiver through the relay center of
carrier includes server 6 operated by IP 8 and a plurality of radio
transceivers 16 parallel-connected to serial ports of the server 6. The
server 6 which functions as a server of receiving e-mail and then
classifying and identifying it, and it is provided with a control software
for controlling the radio transceiver 16. The control software functions as
inputting whether a e-mail is received, the information of e-mail, for
example, the content of e-mail and the number of e-mail or likes, and
the receiver's phone number to the radio transceiver 16.
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Thus, user transmits the e-mail including the receiver's phone
number to the server 6 using his own Internet terminal through Internet,
and then the server 6 receives the e-mail and classifies and identifies it
to construct database. And then the server 6 transmits the e-mail
information and the phone number written in the database by inputting
them to the radio transceiver 16. The e-mail information input to the
radio transceiver 16 is encoded and transmitted to the receiver's radio
transceiver 10 through the relay center of carrier 2. The e-mail
information is received and decoded at the receiver's radio transceiver 10
and then displayed in the form of characters. Alternatively, instead of
being parallel-connected serial ports of the server 6, the radio
transceivers 16 may be connected to other ports of the server 6, or only
one radio transceiver 16 may be connected.
According to the data transmission system of the present invention,
since the data transmission system can transmit the predetermined
information to the receiver with the radio transceivers 16 and 10, any
additional dedicated transmission line is not required and so the cost of
maintaining the system is reduced. And Also, since the information
supplied to the receiver is transmitted after being encoded, apart from the
conventional data transmission system in which the data in the form of
characters may be revealed by the relay company 9 and/or carrier 2, the
data transmission system according to the present invention makes sure
of security of the information.
Additional advantages and modifications will readily occur to those
skilled in the art. Therefore, the invention in its broader aspects is not
limited to the specific details, and representative devices shown and
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described herein. Accordingly, various modifications may be made without
departing from the spirit or scope of the general inventive concept as
defined by the appended claims and their equivalents.
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