KR200400197Y1 - Smartcard share system for satelite broadcasting - Google Patents

Abstract

The present invention is configured to distinguish the first satellite broadcast receiver 100, the smart card 20 is inserted, and a plurality of second satellite broadcast receivers 200, the smart card 20 is not inserted, the first satellite The master transmitter 220 is connected to the broadcast receiver 100, and the slave receiver 220 is connected to the second satellite broadcast receivers 200, respectively, and then the smart card 20 is connected through the master transmitter 120. The present invention relates to a satellite broadcasting smart card sharing system configured to transmit data values to a slave receiver (220). The data transmission of the smart card (200) inserted into one first satellite broadcasting receiver (100) is a separate master transmitter (120). And converts the RF signal into the RF signal, receives the RF signal from each slave receiver 220 connected to the second plurality of satellite broadcasting receivers 200, and demodulates the RF signal into data values of the smart card 20. By delivering to the microcomputer 14, Even in a plurality of second satellite broadcast receivers 200 in which the smart card 20 is not inserted, pay-per-view can be viewed, thereby reducing the economic cost of broadcasting.

In addition, pay-TV can be viewed by the satellite broadcasting receiver without the smart card insertion and recognition system. Therefore, the manufacturer can reduce the overall production cost and increase the price competitiveness. There is another effect of promoting consumption.

Description

Satellite Broadcasting Smart Card Sharing System {SMARTCARD SHARE SYSTEM FOR SATELITE BROADCASTING}

The present invention relates to satellite broadcasting. In particular, each slave connected to a plurality of satellite broadcasting receivers transmits a data value of a smart card inserted into one satellite broadcasting receiver into an RF signal through a separate master transmitter. The present invention relates to a satellite broadcasting smart card sharing system that receives a radio frequency signal from a receiver, demodulates the data value of a smart card, and transmits the demodulated data to a microcomputer, thereby allowing pay-TV to be viewed even in a plurality of satellite broadcasting receivers without a smart card inserted.

In general, DBS receiver (satellite broadcast receiver) or pay channel (Pay-Per-View or Subscription) of cable TV transmits broadcast signal including encrypted signal (limited reception signal), so that only authorized receiver can watch. A cryptographic decryption device is provided in a smart card or a cable set-top box.

Therefore, in order to watch pay TV, a smart card must be inserted and recognized for each satellite broadcast receiver. Therefore, there is a problem in that the cost burden is increased in a household having a plurality of satellite broadcast receivers.

The present invention has been made to solve the above problems, and converts the data value of the smart card inserted into one satellite broadcasting receiver into an RF signal through a separate master transmitter, and transmits it to a plurality of satellite broadcasting receivers. Each satellite receiver receives the RF signal, demodulates the data value of the smart card, and transmits the demodulated data to the microcomputer, so that the satellite broadcast smart card can be viewed even in a plurality of satellite broadcast receivers without a smart card inserted. The purpose is to provide a system.

In order to achieve this object, the present invention provides a demodulator for demodulating a scrambled data stream transmitted through a satellite, a transport decoder for decoding the output of the demodulator, and a decryption key of a smart card. In a satellite broadcasting receiver system having a descrambler for descrambling transport packets, a single satellite broadcast receiver into which a smart card is inserted includes an RS232C cable of a master transmitter to wirelessly transmit an RF signal including information of the smart card. And by connecting each slave receiver with RS232C cable to other satellite broadcast receivers to receive the RF signal, it is possible to share one smart card information by multiple satellite broadcast receivers. have.

Hereinafter, the present invention will be described in detail by the accompanying drawings.

1 is a schematic diagram of a satellite broadcasting smart card sharing system according to the present invention, Figure 2 is a schematic diagram of a satellite broadcasting receiving system using a smart card, Figure 3 is a configuration of a smart card sharing system for satellite broadcasting receiver according to the present invention 4A is a block diagram showing a data flow in the master transmitter of FIG. 1, FIG. 4B is a block diagram showing an embodiment of the Tx module provided in FIG. 4A, and FIG. 5A is a slave receiver of FIG. Fig. 5B is a block diagram showing an embodiment of the Rx module provided in Fig. 5A.

The satellite broadcasting smart card sharing system according to the present invention receives a radio signal transmitted from a satellite and converts it into a broadcast signal so that a user can watch satellite broadcasting through a television. A broadcast receiver 200; A smart card 20 inserted and installed in the first satellite broadcast receiver 100, in which data values including prepaid payment information and decoded information for descramble are recorded to allow satellite broadcasting to be viewed for a predetermined period; It is connected to the first satellite broadcast receiver 100 by the data interface 110, and modulates the data value of the smart card 20 into an RF signal by the RF upmixer 125 and the transmission antenna 130 to the outside. A master transmitter 120 for wireless transmission; It is connected to the second satellite broadcast receiver 200 by the data interface 210 and demodulates the RF signal received by the reception antenna 230 by the RF down mixer 225 and the IF down mixer 227 to perform a smart card ( After the data value 20 is extracted, it is composed of a plurality of slave receivers 220 which transmit the data value to the second satellite broadcast receiver 200.

In addition, in the following, α, β, and γ are constants that arbitrarily indicate the magnitude of the frequency to explain the operation of the upmixer or the downmixer.

The first satellite broadcast receiver 100 transmits the data value of the smart card 20 through the internal communication module 15 and the data interface 110 while the smart card 20 is inserted into the master transmitter 120. Will be delivered to

At this time, the internal communication module 15 refers to a communication chip (chip) mounted on the main board (not shown) for communication between the microcomputer 14 and an external device when upgrading the program embedded in the microcomputer 14 of the receiver. It is.

In addition, the data interface 110 is a means (for example, a cable or a slot) for data transmission between the internal communication module 15 and an external device. In the present invention, an RS232C cable is used as an embodiment of the data interface.

This has the advantage that data transmission can be performed using a 25-pin serial connector (the number of pins may vary depending on the product) that is provided in advance in the conventional satellite broadcasting receiver.

That is, the present invention wirelessly modulates the data value of the smart card 20 by the master transmitter 120 and transmits the data wirelessly, and the slave receiver 220 receives the RF signal transmitted by the master transmitter 120 to transmit the data value. After demodulating and delivering to the microcomputer 14, there is a technical feature to configure the viewing of pay-TV without a smart card.

At this time, it is a matter of course that a plurality of slave receivers 220 are operable in one master transmitter 120.

On the other hand, the limited reception system using a smart card encrypts the broadcast serviced by the broadcasting station 40 by a resource and subscriber management system (RSMS) 30, as shown in Figure 2, and encrypts the encrypted broadcast signal (stream) Issuing a smart card 20 that can be decoded to the viewer, when the smart card 20 is inserted into the satellite broadcasting receiver 100, the microcomputer 14 using the data value of the smart card 20 broadcast signal Help to receive by descrambling.

Therefore, in the related art, the pay-TV can only be viewed through the satellite broadcast receiver 100 into which the smart card 20 is inserted. In the present invention, the smart card 20 is inserted into one of the first satellite broadcast receivers 100. By wirelessly transmitting the data value of the smart card 20 to the second satellite broadcast receiver 200, the smart card information sharing system that can watch the pay broadcast without the smart card 20 is implemented.

The operating principle of the satellite broadcasting smart card sharing system according to the present invention is shown in FIG.

First, an MPEG2 bit stream transmitted through a satellite is received by an antenna and input to a tuner 1 through a low noise amplifier, and the tuner 1 receives information corresponding to a transponder including a channel selected by a user. It receives from the microcomputer 14 and only converts the corresponding transponder signal into baseband for output.

The signal output from the tuner 1 is converted into a digital signal by the analog / digital converter 3 via the IQ separator 2 and then demodulated by a quadrature phase shift keying (QPSK) demodulator (4).

The output of the QPSK demodulator 4 is input to the transport decoder 6 and decoded through a Forward Error Correction (FEC) unit 5 for correcting errors occurring on the communication channel.

At this time, if the selected channel is a paid channel, the descrambler 7 descrambles the audio / video packet by decoding an Entitlement Management Message (EMM) packet and an Entitlement Control Message (ECM) packet. Here, the EMM and ECM packet is a signal carried in the input bit stream and is a signal for limited reception control. In decoding the EMM and ECM packets, the EMM and ECM packets are decoded through the authentication process of the smart card 20. The process is essential.

The output of the transport decoder 6 is input to the audio and video decoders 9 and 8 and decoded, and the RAM 10 is used for decoding of the video decoder 8. In addition, the output of the video decoder 8 is input to the NTSC encoder 11 and output as a composite video baseband signal (CVBS), the output signal of the audio decoder 9 through the digital / anilox converter 12 It is converted into an analog signal and outputted, and when outputted as a TV signal, it is modulated by the RF modulator 13 and output.

Meanwhile, the data value of the smart card 20 is transmitted to the master transmitter 120 through the internal communication module 15 and the data interface 110, and the master transmitter 120 modulates the data value into an RF signal. Then wirelessly transmits through the transmit antenna 130;

The slave receiver 220 receives the RF signal and demodulates the data back to a data value, and then transfers the RF signal to the microcomputer 14 through the data interface 210 and the internal communication module 15. Only the second satellite broadcast receiver 200 is connected to the pay-TV can be viewed.

Hereinafter, the configuration and operation method of the master transmitter 120 (Tx) will be described separately with reference to the drawings shown in Figures 5a and 5b and the configuration and operation method of the slave receiver 220 (Rx). do.

As shown in FIG. 4A, the data input signal transmitted to the master transmitter 220 through the internal communication module 15 and the data interface 110 is first leveled up by the level adjuster 121 to be Tx module 122. RF modulation is performed by the transmitting oscillator 123 in the Tx module 122, and then amplified by a power signal more than a predetermined power signal in the power amplifier 126, and then the transmission antenna The radio 130 transmits radio waves at a frequency of γMHz.

In this case, the signal input from the level adjuster 121 is RF-modulated by the RF upmixer 125 by the transmitting side oscillator 123 and the PLL 124 and transmitted to the power amplifier 126 as shown in FIG. 4B. In one embodiment of the present invention, when the oscillation frequency is αMHz, the amplification thereof is 32 times to form an RF modulation frequency of 32αMHz.

Hereinafter, since the details of the oscillator 123 and the PLL 124 are the same as those of the slave receiver 220, detailed operations will be described later.

The power amplifier 126 is a core component of the Tx module, and functions to amplify a signal so that a signal having sufficient power can be output at the final stage, and amplifies the signal with gain, but unlike other amps, a large amount of current is output at the output. It is designed to flow a high dBm of power at the output.

In this case, since the power amplifier is a non-linear amplifier, an unnecessary frequency output component may appear, and a band select filter for passing only the channel bands in use to avoid amplifying such spurious frequency components. You can also add. In a system sharing an antenna with a receiver, the duplexer takes the place of a bandpass filter.

The RF signal amplified by the power amplifier 126 finally radiates a change in the electrical signal on the wire by a transmission antenna (Tx Antenna) 130 to electromagnetic waves in the air.

Meanwhile, as shown in FIG. 5A, the slave receiver 220 receives an RF signal of γMHz transmitted from the master transmitter 120 through the reception antenna 230 and receives a low noise amplifier (LNA) 221. To pass on.

The LNA 221 amplifies the signal in a state of suppressing amplification to the noise of the received signal as much as possible, and then the RF signal from which the noise is removed again through the filter 222 is received at the receiving side oscillator 224 in the Rx module 223. After RF demodulation is performed, the data is transmitted to the microcomputer 14 via the data interface 210 and the internal communication module 15.

At this time, the Rx module 223 is an embodiment of the present invention, as shown in Figure 5b, the RF down mixer 225; Filter 222; Receiving oscillators 1,2 and 224 and 224 '; IF downmixer 227; IF amplifier 228; Consists of the FM demodulator 229, and will be described in detail each component according to the flow of data.

As shown in FIG. 5B, the RF signal amplified by the LNA 221 and filtered through the filter 222 may be a low noise amplified RF signal in an RF down mixer (downconversion mixer) 225. Intermediate frequency) is downconverted to the band.

In this case, the intermediate frequency (IF) is a well-known technique generally used in a conventional RF circuit to improve sensitivity and reliability of a signal received at a receiver, and thus, detailed description thereof will be omitted.

Since the receiving side oscillator 1 (RF LO; Local Oscillator) 224 supplies the RF downmixer 225 with a LO frequency of 16βMHz for frequency synthesis, the output value of the RF downmixer 225 is (γ-16β) MHz. Will have

In addition, PLL (Phase Locked Loop) is used to allow the output frequency of receiving oscillator 1 (224) to be fixed at a constant frequency without being shaken. Adjusts the voltage of the receiver (not shown) to move and fix the output frequency of the oscillator 1 (224) to a desired frequency (frequency tuning).

On the other hand, the rear end of the RF down mixer 225 is provided with a band pass filter 22 to remove a variety of frequencies from the signal received by the antenna, and to amplify only the desired frequency band. In addition, it is preferable to include an image reject filter in front of the signal amplified in the LNA 221 to prevent the lethal image frequency is transmitted to the RF down mixer 225. This additionally removes spurious frequencies and improves the stability of the receiver by separating the RF and IF stages.

An RF down mixer 225 and an RF signal passed through the filter 222 are IF down mixers (IF down mixers) to remove carrier frequencies and convert them to basebands, which are the original frequency bands. 227).

In addition, since the receiving side oscillator 2 (224 ') is provided in the IF down mixer 227 to supply an LO frequency of β MHz in the IF downmixer 227 to convert the IF signal to the baseband, the output value of the IF down mixer 227 is (γ). -17β) MHz. In this case, the receiving side oscillator 1 224 and the receiving side oscillator 2 224 ′ may be configured to share the PLL 226 so that the output frequency may be fixed at a constant frequency without shaking.

Meanwhile, since the LNA 221 alone cannot sufficiently amplify the weak received signal, the signal is amplified again through the IF amplifier 228 after filtering, and finally converted to a data value through the FM demodulator 229. After that, the data is transmitted to the microcomputer 14 through the interface 210 and the internal communication module 15.

Accordingly, even in the microcomputer 14 of the second satellite broadcast receiver 200 in which the smart card 20 is not inserted, the slave receiver 220 receives the data value of the smart card 20 to descramble the broadcast signal. It becomes possible.

At this time, the output of the data value of the smart card 20 to the outside through the internal communication module 15-25-pin serial connector-data interface 110 is a cable branch [micom 14 to the output terminal of the smart card (20) Input terminal and internal communication module 15 input terminal in parallel], or a hardware method of receiving the smart card 20 data value from the microcomputer 14 and transmitting it back to the internal communication module 15. It can be implemented as

In addition, the process of recognizing the data value input through the data interface 210 and the internal communication module 15 in the microcomputer 14 as the information of the smart card 20 can be implemented by the installation of a simple program, the satellite broadcasting receiver It is preferable to include in the drive program of the microcomputer 14 in the main board manufacturing step of the. Of course, the program can be updated using a 25-pin serial connector after the satellite receiver is released.

That is, the present invention connects the smart card 20 and the master transmitter 120 to the first satellite broadcast receiver 100 and the slave receivers 220 to the plurality of second satellite broadcast receivers 200, respectively. There are technical features to sharing information.

On the other hand, as another embodiment of the present invention, a smart card 20 detachable and provided with a separate device, a smart card recognizer (not shown) for outputting the data value of the inserted smart card 20 to the outside; A plurality of satellite broadcast receivers (200) for receiving a radio signal transmitted from the satellite and converting it into a broadcast signal so that a user can watch satellite broadcast through a television; The master transmitter is connected to the smart card reader by the data interface 110 and modulates the data value of the smart card 20 into an RF signal by the RF upmixer 125 and the transmitting antenna 130. 120); The smart card 20 is connected to the satellite broadcasting receiver 200 by the data interface 210 and demodulates the RF signal received from the receiving antenna 230 by the RF down mixer 225 and the IF down mixer 227. After extracting the data value of the may be configured as a plurality of slave receivers for transmitting the data value to the satellite broadcast receivers (200).

That is, provided in a separate smart card reader (not shown), and connects the master transmitter 120 to the smart card reader, the slave receiver 220 to the plurality of satellite broadcast receivers 200, respectively, the master transmitter Receiving an RF signal containing the data value of the smart card 20 transmitted from the 120 from the slave receiver 220 it is possible to share the information of the smart card 20.

At this time, the smart card recognizer is configured to separate the smart card insertion device provided in the conventional satellite broadcast receiver as a separate independent product, which can be easily manufactured by a conventional known technology, a detailed description thereof will be omitted below.

In addition, as another embodiment of the present invention, the first satellite broadcast receiver 100, the second satellite to receive a radio signal transmitted from the satellite and convert it into a broadcast signal so that the user can watch satellite broadcasting through a television A broadcast receiver 200; A smart card 20 inserted and installed in the first satellite broadcast receiver 100, in which data values including prepaid payment information and decoded information for descramble are recorded to allow satellite broadcasting to be viewed for a predetermined period; The internal communication module 15 and the serial connector of the first satellite broadcast receiver 100 into which the smart card 20 is inserted, and the internal communication module 15 and the serial of the second satellite broadcast receiver 200 without the smart card. The connector is connected by wire through the data interfaces 110 and 210, and the broadcast is transmitted to share the data values of the smart card 200 by the control of the microcomputer 14 embedded in each satellite broadcasting receiver 100 and 200. You can also configure a smart card sharing system.

That is, the serial connector of the first satellite broadcast receiver 100 into which the smart card 20 is inserted and the serial connector of the second satellite broadcast receiver 200 without the smart card are directly connected to a serial cable such as RS232C or RS485 (not shown). Information) of the smart card 20 is directly connected.

As described above, the present invention proposes a preferred embodiment in FIGS. 1 to 5, but the scope of the present invention is not limited by the present invention, and the scope of the present invention extends to all the replaceable technologies falling within the equivalent scope of the present invention.

The present invention is configured to distinguish the first satellite broadcast receiver 100, the smart card 20 is inserted, and a plurality of second satellite broadcast receivers 200, the smart card 20 is not inserted, the first satellite The master transmitter 220 is connected to the broadcast receiver 100, and the slave receiver 220 is connected to the second satellite broadcast receivers 200, respectively, and then the smart card 20 is connected through the master transmitter 120. The present invention relates to a satellite broadcasting smart card sharing system configured to transmit data values to a slave receiver (220). The data transmission of the smart card (200) inserted into one first satellite broadcasting receiver (100) is a separate master transmitter (120). And converts the RF signal into the RF signal, receives the RF signal from each slave receiver 220 connected to the second plurality of satellite broadcasting receivers 200, and demodulates the RF signal into data values of the smart card 20. By delivering to the microcomputer 14, Even in a plurality of second satellite broadcast receivers 200 in which the smart card 20 is not inserted, pay-per-view can be viewed, thereby reducing the economic cost of broadcasting.

In addition, pay-TV can be viewed by the satellite broadcasting receiver without the smart card insertion and recognition system. Therefore, the manufacturer can reduce the overall production cost and increase the price competitiveness. There is another effect of promoting consumption.

1 is a schematic diagram of a satellite broadcasting smart card sharing system according to the present invention,

2 is a schematic diagram of a satellite broadcasting receiving system using a smart card,

3 is a configuration diagram of a smart card sharing system for a satellite broadcasting receiver according to the present invention;

4A is a block diagram showing a data flow in the master transmitter of FIG.

4B is a configuration diagram illustrating an embodiment of the Tx module provided in FIG. 4A;

5A is a block diagram illustrating a data flow in the slave receiver of FIG. 1;

FIG. 5B is a configuration diagram illustrating an embodiment of the Rx module provided in FIG. 5A. FIG.

<Brief description of symbols for the main parts of the drawings>

1: Tuner 2: IQ Separator

3: A / D converter 4: demodulator

5: FEC part 6: transport decoder

7: Descrambler 8: Video Decoder

9: audio decoder 10: RAM

11: NTSC decoder 12: D / A converter

13: RF converter 14: micom

15: internal communication module 20: smart card

30: RSMS 40: broadcasting station

100: first transmission broadcast receiver 110: data interface

120: master transmitter 121: level adjuster

122: Tx module 123: transmitting oscillator

124: PLL 125: RF Upmixer

126: power amplifier (PA) 130: transmission antenna

200: second satellite broadcast receiver 210: data interface

220: slave receiver 221: LNA

222: filter 223: Rx module

224, 224 ': Receiver oscillator 1,2 225: RF downmixer

226: PLL 227: IF Downmixer

228: IF amplifier 229: FM demodulator

230: receiving antenna

Claims (8)

In the satellite broadcasting receiving system using a smart card, A first satellite broadcast receiver and a second satellite broadcast receiver for receiving a radio signal transmitted from a satellite and converting it into a broadcast signal so that a user can watch a satellite broadcast through a television; A smart card inserted and installed in the first satellite broadcast receiver, the data card including prepaid payment information and decoded information for descrambling the satellite broadcast for a predetermined period; A master transmitter connected to the first satellite broadcast receiver by a data interface and modulating the data value of the smart card into an RF signal by an RF upmixer and a transmission antenna and transmitting the RF signal to the outside; The data interface is connected to the second satellite broadcasting receiver, and the RF signal received from the receiving antenna is demodulated by the RF down mixer and the IF down mixer to extract the data value of the smart card, and then the data value is converted into the second satellite broadcasting receiver. Smart card sharing system, characterized in that consisting of a plurality of slave receivers for transmitting to the field. The method of claim 1, The master transmitter includes a data interface for transmitting data values of the smart card through an internal communication module; A level adjuster for leveling up the data signal transmitted through the data interface; The Tx module for performing the RF modulation by the oscillation frequency transmitted from the transmitting side oscillator, A power amplifier (PA) for amplifying the RF signal modulated by the Tx module into a predetermined power signal; And a transmission antenna for wirelessly transmitting the amplified RF signal at a predetermined frequency. The method of claim 2, The Tx module includes a transmitting side oscillator for generating a constant oscillation frequency; A PLL that fixes the frequency of the transmitting oscillator to a desired value; A satellite broadcasting smart card sharing system, comprising: an RF upmixer that modulates and outputs a data value from a level controller by a frequency input from a transmitting oscillator. The method of claim 1, The slave receiver includes a reception antenna for receiving an RF signal transmitted from a master transmitter; A low noise amplifier (LNA) for amplifying the signal in a state of suppressing amplification from the RF signal received at the reception antenna to noise of the received signal as much as possible; A filter for removing noise from the RF signal amplified by the LNA; An Rx module for RF demodulation based on the oscillation frequency transmitted from the oscillators 1 and 2 of the receiver and outputting a data value; A satellite broadcasting smart card sharing system, characterized in that consisting of a data interface for transmitting the data value to the microcomputer through the internal communication module. The method of claim 4, wherein The Rx module includes: an RF downmixer for frequency downconverting the low noise amplified RF signal into an IF band (intermediate frequency);  A receiving side oscillator 1 (RF LO; Local Oscillator) for supplying an LO frequency for frequency synthesis to the RF downmixer; A filter for removing noise included in the signal; An IF down mixer for removing the carrier frequency and converting it into a baseband, which is a frequency band containing the original signal; A receiver oscillator 2 for supplying an LO frequency for frequency synthesis to the IF down mixer; A PLL which fixes the frequencies of the receiving oscillators 1 and 2 to a desired value; An IF amplifier for amplifying the IF converted signal again; A satellite broadcasting smart card sharing system, comprising: an FM demodulator for receiving an amplified IF signal and outputting a data value. The method of claim 1, The data interface is a satellite broadcasting smart card sharing system, characterized in that using the RS232C cable. In the satellite broadcasting receiving system using a smart card, A smart card reader having a smart card attachment and detachment device and outputting data values of the inserted smart card to the outside; A first satellite broadcast receiver and a second satellite broadcast receiver for receiving a radio signal transmitted from a satellite and converting it into a broadcast signal so that a user can watch a satellite broadcast through a television; A master transmitter connected to the smart card reader through a data interface and modulating the data value of the smart card into an RF signal by an RF upmixer and a transmission antenna and transmitting the RF signal to the outside; It is connected to the satellite broadcasting receiver by the data interface, extracts the data value of the smart card by demodulating the RF signal received from the receiving antenna by the RF down mixer and the IF down mixer, and then transfers the data value to the satellite broadcasting receivers. Smart broadcast sharing system, characterized in that consisting of a plurality of slave receivers. In the satellite broadcasting receiving system using a smart card, A first satellite broadcast receiver and a second satellite broadcast receiver for receiving a radio signal transmitted from a satellite and converting it into a broadcast signal so that a user can watch a satellite broadcast through a television; A smart card inserted and installed in the first satellite broadcast receiver, the data card including prepaid payment information and decoded information for descrambling the satellite broadcast for a predetermined period; The internal communication module and serial connector of the first satellite broadcast receiver into which the smart card is inserted and the internal communication module and serial connector of the second satellite broadcast receiver without a smart card are wired by a data interface, and each satellite broadcast receiver is connected. Disseminated broadcasting smart card sharing system, characterized in that sharing the data values of the smart card by the control of the built-in microcomputer.