KR0181840B1 - Digital dbs integrated receiver decoder - Google Patents

Abstract

The present invention relates to a false call request detection and display device of a digital DBS receiving system, comprising: a digital DBS receiver 100, an RSMS 180, a microcomputer 130, a smart card 135, and a modem 140; A digital DBS receiving system having a public network (185) and a telephone (190), comprising: a line detector (145) for detecting a call request on a telephone line and outputting a call request detection signal; A switching unit 150 that determines a right to use a public network according to the detection signal; Two-way communication unit 155; A voice signal detection unit 160 for detecting a voice signal on a telephone line and outputting a voice detection signal if the call request detection signal is present; A counter 165 which starts counting time if there is the call request detection signal and outputs an unvoiced signal if the voice detection signal is not input within a predetermined time; A display unit 170 for notifying the subscriber of the fact that a silent signal is input from the counter 165; And a keypad 175 for initializing the counter and deleting the displayed contents when the call request detected by the line detection unit 145 is normal. The present invention provides information on paying for digital direct satellite broadcasting. When a call request of a wrong call occurs on the telephone line to be transmitted and received, it is possible to detect and display it so that information can be exchanged even when the wrong call is requested.

Description

False call request detection and display device of digital DBS receiving system

1 is a block diagram schematically illustrating a digital DBS system.

2 is a block diagram showing a conventional digital DBS receiver.

3 is a block diagram illustrating a false call request detection and display device of a digital DBS receiving system according to the present invention.

* Explanation of symbols for main parts of the drawings

100: Digital DBS Receiver 105: Tuner

110: channel decoder 115: transport stream demultiplexer

120: decryption unit 125: audio / video decoder

130: microcomputer 135: smart card

140: modem 145: line detection unit

150: switching unit 155: bidirectional communication unit

160: voice signal detection unit 165: counter

170: display unit 175: keypad

180: resource and subscriber management system 185: public network

190: telephone T: tip line

R: Ring line

The present invention relates to a false call request detection and display device of a digital DBS reception system, and to detect and display a false call request on a telephone line used to transmit and receive information on pay-per-view of digital direct satellite broadcasting. False call request detection and display of a digital DBS receiving system.

In general, a digital direct satellite broadcasting service (DBS) refers to a broadcasting method of retransmitting a broadcast signal through a satellite repeater for the purpose of receiving a signal directly from a general home. The installation of the device allows direct reception, which has attracted much attention worldwide.

However, the reason why the digital DBS has been in the spotlight worldwide is that it has excellent data error correction technology and compression technology, and it has the advantage of being able to broadcast a high quality uniformly over a large area with a small output compared to terrestrial broadcasting. Korea will also start digital DBS from 1996 using Mugunghwa satellite.

FIG. 1 is a block diagram schematically showing the above-described digital DBS system. The digital DBS system is largely composed of a service provider side 1, a satellite repeater 2, a subscriber side 3, and a public network 4.

The service provider side 1 converts, compresses, and multiplexes a television signal, which is composed of transport stream packets, and then channel-encoded and transmitted to a satellite at a frequency of 14 kHz normally (Encoder Transmitter). 1) and a resource control system for collecting subscriber usage information and a resource subscriber management system (hereinafter referred to as RSMS: 1-2).

The satellite repeater (2) transmits and amplifies the transport stream from the transmission system and retransmits it at the 12 kHz frequency.

The subscriber side 3 drops a 12 kHz transport stream signal relayed from the satellite repeater 2 to a 1 kHz intermediate frequency signal and removes noise. 3-1) and a signal from the digital DBS receiver 3-2 for decoding the signal from the LNB 3-1 and the digital DBS receiver 3-2 are outputted, that is, the digital DBS. Is composed of a television 3-3 being broadcast.

The public network 4 is used to exchange paid-viewing information of the digital DBS between the RSMS 1-2 and the digital DBS receiver 3-2.

2 is a block diagram showing a digital DBS receiver in the digital DBS system. The conventional digital DBS receiver includes a tuner 15, a channel decoder 20, a transport stream demultiplexer 25, and a decryption unit. A digital DBS receiver 10 and RSMS 55 composed of an audio / video decoder 35, a microcomputer 40, a mark card 45, and a modem 50, and the DBS digital receiver 10 It consists of a public network 60 connecting the RSMS 55.

Referring to FIG. 2, the operation of the conventional digital DBS receiver configured as described above is as follows.

The transmission system (not shown) converts, compresses, and multiplexes the television signal into transport stream packets, and then channel-codes the signals to a satellite repeater (not shown) at a frequency of 14 kHz.

The satellite repeater amplifies the multiplexed transport stream into multiple channels received from the transmission system and outputs the signal at a frequency of 12 kHz. The output transport stream is received from a subscriber antenna (not shown) and then LNB (shown). ), And the noise is removed at the same time.

The channel desired by the viewer among the transport streams converted in the LNB is tuned in the tuner 15.

The transport stream of the channel tuned by the tuner 15 passes through the channel decoder 20 to correct an error generated during transmission.

However, the channel decrypted transport stream includes an encrypted program service stream, an encrypted data service stream, and an unencrypted RSMS data stream.

The program service stream and the data service stream are input to the transport stream demultiplexer 25 and the RSMS data stream is input to the smart card 45.

Here, the RSMS data input to the smart card 45 is an entitlement management message (EMM) and a decryption unit for providing digital DBS programs only to a subscriber equipped with a legitimate smart card 45. Receiver Command Message including an Entitlement Control Message (hereinafter referred to as ECM) having information necessary to recover the original signal at 30 and a command for a specific receiver subscribed to the digital DBS. Hereinafter referred to as RCM).

When the EMM and ECM are input to the legitimate smart card 45 of the RSMS message, the smart card 45 outputs a predetermined signal to the microcomputer 40, and the microcomputer 40 then decrypts the decryption unit 30. Outputs a control signal to restore the original signal of the channel selected by the viewer.

At this time, the decryption unit 30 decodes only the channel selected by the viewer from among the program service stream and the data service stream input to the transport stream demultiplexer 25, so that the transport stream demultiplexer 25 Extracts only audio / video data desired by the viewer.

The extracted audio / video data is input to an audio / video decoder 35 to perform decoding, and the decoded video and audio data are output to a television (hereinafter referred to as TV) (not shown).

By the way, there is an information service for viewing a paid program among digital DBS program guide services that are typically provided as subtitles during digital DBS viewing.

The paying program viewing means that the subscriber sees only the program he wants to watch and pays only the fee corresponding to the present program (Pay-Per-View), and if he wants to watch the paying program, the subscriber pays the RSMS 55 first. You must apply to watch the program.

The RSMS 55 then inputs the information necessary for the paid program into the smart card 45 of the subscriber. When the subscriber applies for paid viewing as described above, the RCM of the RSMS message is transferred to the smart card 45 so that a usage upload is requested. Thus, the subscriber usage information stored in the smart card 45 is public network. 60 and the modem 50 of the digital DBS receiver are transmitted to the RSMS 55 so that the charge is calculated according to the usage of the subscriber.

In addition, since the usage information of the paid program is stored in the record of the smart card 45, when the usage amount of the record of the smart card 45 exceeds 90%, the usage information cannot be stored and viewing of the paid program is stopped.

Accordingly, the digital DBS receiver requests to transmit subscriber usage information in the smart card 45 to the RSMS 55 using the modem 50 and the public network 60 of the digital DBS receiver at regular intervals. When the record usage of the card 45 exceeds 90%, it is transmitted to the RSMS 55 to update the record capacity of the smart card 45.

However, in the conventional digital DBS receiving system, a modem for exchanging information with the RSMS 55 shares a telephone line connected to a public telephone and a public network 60, and an emergency patient needs to make an emergency telephone call. In order to prepare for an emergency such as a telephone line, the priority is always given to the telephone, and even if a call request of the wrong telephone is generated, the telephone line is determined to be busy and there is a problem that the information cannot be exchanged at all.

That is, it is determined that the telephone is still using the telephone line even in the state of a false call request, so that the exchange of information about the viewing of the paid program of the digital DBS between the smart card 45 and the RSMS 55 or the updating of the recording capacity of the smart card is performed. The problem is that you can't.

Accordingly, the present invention has been made to solve the above problems, the digital DBS reception to detect and display the wrong call request occurs on the telephone line to which the information on the paid viewing of digital direct satellite broadcasting is transmitted and received It is an object of the present invention to provide a false call request detection and display system.

The false call request detection and display device of the digital DBS receiving system of the present invention for achieving the above object is the right to decrypt the encrypted data so that only the subscriber with the microcomputer and the receiving authority can receive the data. Control access to subscribers to a program and a digital DBS receiver configured to include a smart card that stores and provides information about a paid program when a subscriber applies for a paid program, and a modem for exchanging information about paid viewing of the smart card. A digital DBS receiving system having an RSMS for collecting and storing usage information from a subscriber receiving unit, a public network connecting the digital DBS receiver and an RSMS, and a telephone connected to the public network, the telephone line connected to the public network Use the phone line for data transmission and reception If a call request is detected result pyeobon this line detector that then outputs a detection signal to the microcomputer, and; A switching unit for determining whether to give a telephone line use right to a telephone or a modem for data transmission / reception according to the detection signal; A modem for smoothly bi-directional communication on the telephone line determined by the switching unit; A voice signal detector for outputting a voice detection signal according to the presence or absence of a voice signal on a telephone line when a telephone call is made by the bidirectional communication unit; A counter for counting a time simultaneously with the operation of the voice signal detector and outputting a signal to a microcomputer to output a signal according to whether the voice detection signal is input within a predetermined time; A display unit for informing a user of a call request of an invalid telephone call under the control of a microcomputer according to the output signal of the counter; And a keypad for inputting information for initializing the counter and deleting the displayed contents when it is determined that the call request is for a normal call as a result of viewing the displayed contents of the display unit.

According to the present invention configured as described above, if the call request of the wrong telephone call occurs on the telephone line to which the information on the paid viewing of digital direct satellite broadcasting is transmitted and received, it is detected and displayed so that the user can take appropriate measures. The information exchange is possible at the time of call request.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention. 3 is a block diagram showing a false call request detection and display device of a digital DBS receiving system according to the present invention. The false call request detection and display device of the digital DBS receiving system of the present invention includes a tuner 105; Channel decoder 110; Transport stream demultiplexer 115; Decryption unit 120; Audio / video decoder 125; The microcomputer 130; Smart card 135; Modem 140; A line detector 145; Switching unit 150; Two-way communication unit 155; Voice signal detection unit 160; Counter 165; Display unit 170; It consists of a digital DBS receiver 100 composed of a keypad 175, an RSMS 180, a public network 185, and a telephone 190.

Here, the tuner 105 amplifies and retransmits the transport stream, which is channel-encoded and multiplexed and transmitted by the satellite, in a transmission system (not shown), and receives the input to tune the transport stream desired by the viewer.

In addition, the channel decoder 110 decodes the encoded transport stream tuned by the tuner 105, and the transport stream demultiplexer 115 receives the channel decoded multiplexed stream and demultiplexes the viewer. Extract only audio / video data of desired channel.

Subsequently, the decryption unit 120 decrypts the data so that the subscriber can view the encrypted signal, and the audio / video decoder 125 inputs the encrypted and demultiplexed extracted audio / video data. It receives the decoding and outputs it to the TV.

In addition, the microcomputer 130 controls the entire system, the smart card 135 grants the right to decrypt the encrypted data in order to ensure that only the subscriber with the right to receive data, paid If you apply for the program, we store and provide information about it.

The line detecting unit 145 detects a call request of a telephone call generated when an existing telephone line is used for data transmission / reception and outputs a call request detection signal to the microcomputer 130.

The switching unit 150 determines whether to give a telephone line use right to a telephone or the modem 140 for data transmission / reception based on the call request detection signal.

Subsequently, the bidirectional communication means 155 allows the communication on the telephone line determined by the switching unit 150 to be smoothly in both directions.

In addition, the voice signal detector 160 outputs a voice detection signal according to the presence or absence of a voice signal on a telephone line when a telephone call is made by the bidirectional communication unit.

The counter 165 counters the time at the same time as the operation of the voice signal detector 160 and outputs the signal to the microcomputer that outputs a signal according to whether the voice detection signal is input within a predetermined time.

Subsequently, the display unit 170 notifies the user of a call request of an incorrect telephone call according to an input signal from the counter 165, and the keypad 175 views the contents displayed by the display unit 170 to display the telephone. As a result, when it is determined that a call request for a normal call is generated, information for initializing the counter 165 and deleting the displayed contents is input.

In addition, RSMS 180 controls and monitors subscriber access to the program and collects and stores usage information from subscriber receiving units.

Next, the operation and effects of the present invention configured as described above will be described with reference to FIG. 3.

The digital DBS receiver 100 tunes the encoded channel desired by the viewer in the tuner 105, decodes the channel in the channel decoder 110, and demultiplexes the transport stream of the decoded channel to the audio / video desired by the viewer. Extract only data.

The extracted audio / video data is decrypted, and the decrypted audio / video data is decrypted and output to the TV.

The transport stream of the channel decoded channel is composed of a program service stream, a data service stream, a resource, and an RSMS stream, and an RSMS stream is composed of an EMM, an ECM, and an RCM, and is input to the smart card 135.

If the viewer wants to watch a paid program and the fact is recorded in the smart card, the RCM issues a usage upload request and checks the record usage of the smart card 135 so that the usage is 90%. If exceeded, the subscriber usage information stored in the smart card 135 must be delivered to the RSMS 180 using the modem 140 and the public network 185 of the digital DBS receiver 100.

Conventionally, the right of use of the telephone line connected to the public network 175 for the exchange of information is given to the telephone call, even if the wrong call request, the information exchange between the DBS digital receiver and RSMS 160 could not be achieved, but the present invention If the call is a normal call, the information exchange will continue. If the call is a wrong call, the viewer will be notified and take appropriate action so that the information can be exchanged.

Referring to the operation of the present invention, as a result of examining the telephone line for information exchange, if there is a call request of the telephone, the line detector 145 detects this and outputs a detection signal to the microcomputer 130.

The microcomputer 130 receiving the detection signal from the line detector 145 temporarily controls the control signal so that the switching unit 150 and the bidirectional communication unit 155, the voice signal detection unit 160, and the counter 165 simultaneously start operation. Output to

Accordingly, the switching unit 150 grants the right to use the public network 185 for a telephone call, and the two-way communication unit 155 may perform smooth two-way communication on the telephone line, thereby preventing information exchange.

At this time, the voice signal detector 160 monitors whether there is a voice signal on the telephone line. If the voice signal is not detected, the counter 165 and the display unit 170 are not driven. It is learned that the exchange could not be made.

On the other hand, when the voice signal is detected from the voice signal detector 160, the voice signal is output to the counter 165.

The counter 165 counts the time simultaneously with the input of the control signal from the microcomputer 130, and outputs a high signal to the microcomputer 130 to inform the microcomputer 130 if the voice detection signal is not input within a predetermined time. When the voice detection signal is input within the time, a low signal is output to the microcomputer 130.

Since the microcomputer 130 receiving the low signal from the counter 165 does not output a control signal for driving the display unit 170, the display unit 170 does not operate so that the subscriber receives a normal call request. It turns out that information exchange could not be made.

On the other hand, the microcomputer 130 receiving the high signal from the counter 165 outputs a control signal for commanding the display unit 170, accordingly, the display unit 170 is the wrong call request generated To inform the user.

For example, the telephone handset is now misplaced using the On Screen Display (OSD) device of the digital DBS receiver (100). Check your phone and if you are on a normal phone call, enter XXXX and if the handset is wrong, hang up the handset.

Thus, when the user looks at the telephone and the telephone call is not in a call request state, the receiver is immediately placed to allow information exchange between the smart card 165 and the RSMS 160.

However, when the user looks at the phone and finds that the user is in a normal call, the smart card 135 may be input when the user inputs information through the keypad 175 to initialize the counter 165 and stop the operation of the display unit 170. Information transmission and reception about viewing of the digital DBS pay program between the RSMS 180 and the RSMS 180 cannot be made, of course, and the telephone call continues.

According to the present invention configured as described above, if the call request of the wrong telephone call occurs on the telephone line to which the information on the paid viewing of digital direct satellite broadcasting is transmitted and received, it is detected and displayed so that the user can take appropriate measures. Even when a call is requested, the above information exchange is possible.

Claims (1)

Smart to grant the right to decrypt the encrypted data to ensure that only the microcomputer 130 and the subscriber with the right to receive data, and to store information about the paid program if the subscriber applied for Control and monitor subscriber access to the program and the digital DBS receiver 100, which includes a card 135, a modem 140 for exchanging information about pay-per-view, and collects and stores usage information from the subscriber receiving unit. In a digital DBS receiving system having an RSMS 180, a public network 185, and a telephone 190, a call request for a call on a telephone line to use a telephone line connected to the public network 185 for information exchange. A line detector 145 which detects whether there is an error and outputs a call request detection signal to the microcomputer 130 when a call request is detected; A switching unit (150) for determining whether to give a telephone line use right to a telephone (190) or a modem (140) for data transmission / reception based on the call request detection signal; A bidirectional communication unit 155 for facilitating communication on the telephone line determined by the switching unit 150 in both directions; A voice signal detector 160 for outputting a voice detection signal according to the presence or absence of a voice signal on the telephone line when the telephone call is made by the bidirectional communication unit 155; A counter 165 for counting a time simultaneously with the operation of the voice signal detection unit 160 and outputting the signal to a microcomputer for outputting a signal according to whether the voice detection signal is input within a predetermined time period; A display unit 170 for informing a user of a call request of an incorrect telephone call in response to an input signal from the counter 165; And looking at the content displayed by the display unit 170 and looking at the phone, if it is determined that a call request for a normal call has occurred, inputting information for initializing the counter 165 and deleting the displayed content. Incorrect call request detection and display device of the digital DBS receiving system, characterized in that consisting of a keypad (175).