KR100213382B1 - Receiving/transmitting apparatus and method capable of transmitting a message to individual subscriber - Google Patents

Abstract

The present invention relates to a satellite broadcasting receiving apparatus and method capable of delivering a message to an individual subscriber who sends a message to a specific subscriber among all subscribers who read satellite information by reading information of a smart card provided for each subscriber. A receiver for digitally converting and demodulating an analog radio signal to output a transport stream of satellite broadcasting, a demultiplexer for separating and outputting the transport stream input from the receiver into a video stream, an audio stream, and an RSMS message, respectively; A video coding unit for decoding the video stream output from the demultiplexing unit and outputting the original video data before compression, an audio decoding unit for decoding the audio stream output from the demultiplexing unit and outputting an audio signal before compression; From the video decoding unit NTSC encoding unit that converts the video data output to NTSC broadcasting signal, key input unit and remote control signal receiver which transmits control command by viewer's operation to microcomputer, and records data on smart card and read recorded data. A smart card interfacing unit and a control command applied from the key input unit and the remote control signal receiver to collectively control the operation of each device, and to read the unique address recorded in the smart card through the smart card interfacing unit and to read the demultiplexer. Compares the receiving address of the RSMS message output from the smart card with the unique address of the smart card. Modem to enable data exchange with Equipped.

Description

Satellite broadcasting receiver and method that can deliver message to individual subscriber

The present invention relates to an apparatus and a method for receiving a satellite broadcast, and more particularly, to deliver a message to an individual subscriber who reads information on a smart card provided to each subscriber and transmits a message to a specific subscriber among all subscribers watching satellite broadcast. The present invention relates to a satellite broadcasting receiver and a method.

In general, a satellite broadcasting receiving system is a system for receiving a satellite signal transmitted from a broadcasting satellite and allowing a viewer to watch it on a TV. The satellite broadcasting receiving system receives a GHz band broadcasting signal transmitted from a broadcasting satellite and receives one channel of a TV broadcasting channel. Digital TV receiver which converts into frequency band and satellite broadcasting signal converted into one channel frequency band signal of over-the-air broadcasting output from digital broadcast receiver to receive image on CRT and output audio signal to speaker Is done.

In the conventional satellite broadcasting receiving system, a subtitle is inserted into a program or transmitted using a caption, or caption is used to deliver a message to a subscriber. The message could not be sent to only one particular subscriber because it was delivered to the subscriber.

In addition, there is an inconvenience in that a caption decoder must be separately provided when using the caption.

The present invention has been made to solve the above-mentioned inconvenience, the purpose is to read the information of the smart card given to each subscriber at the subscriber side and transmit it to the broadcasting station side to the subscriber with the unique address of the smart card at the broadcasting station side It is to provide a satellite broadcasting receiving apparatus and method capable of delivering a message.

1 is a block diagram showing the structure of a satellite broadcasting receiving system according to the present invention.

2 is a block diagram showing the internal configuration of a satellite broadcasting receiver provided on the subscriber side according to the present invention.

FIG. 3 is a flowchart showing the message receiving operation procedure of the satellite broadcasting receiver shown in FIG.

* Explanation of symbols for main parts of the drawings

11: Program and data source 12: Resource and subscriber management system (RSMA)

13: transmitting earth station 14: broadcasting satellite

15: satellite broadcasting receiver 16: smart card

17: TV (or VTR) 18: subscriber data receiver

As a technical means for achieving the object of the present invention as described above, the present invention is a satellite broadcasting receiving apparatus, the receiver for digitally converting and demodulating the analog radio signal received by the antenna to output a transport stream of satellite broadcasting; And a demultiplexer for separating the transport stream input from the receiver into a video stream, an audio stream, and an RSMS message, respectively, and outputting the video stream output from the demultiplexer to the original video data before decoding. A video decoding unit, an audio decoding unit for decoding an audio stream output from the demultiplexing unit and outputting an audio signal before compression, and an NTSC encoding unit for converting video data output from the video decoding unit into an NTSC broadcast signal. And control commands by the viewer's operation. Each device according to a key input unit and a remote control signal receiver to be transferred to the microcomputer, a smart card interfacing unit to record data on the smart card and read the recorded data, and control commands applied from the key input unit and the remote control signal receiver. Control the operation of the controller and read the unique address recorded on the smart card through the smart card interfacing unit, compare the received address of the RSMS message output from the demultiplexer with the unique address of the smart card, and if the same, turn on the RSMS message. It is provided with a microcomputer for screen display and a modem connected to a public wired network (PSTN) to enable data exchange between the resource and subscriber management system of the microcomputer and the broadcasting station.

In addition, in a satellite broadcasting receiving method capable of delivering a message to an individual subscriber, initializing a receiver, reading and storing a unique address and information of a smart card recorded on a smart card, and a transport transmitted through a satellite Receiving the stream; checking whether there is OSD service data from the broadcasting station in the transport stream received in the step; and if the OSD service data is present in the determining step, the reception address of the service data is determined from the smart card. And comparing the read and stored addresses with each other, and if the addresses match in the above step, displaying on-screen display of the corresponding OSD service data as text.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the present invention.

1 is a block diagram showing the overall configuration of a satellite broadcasting receiving apparatus according to the present invention, which is provided at a broadcasting station to manage signal sources 11 of programs and data, transmit them to a transport stream, and store information on subscribers. A resource and subscriber management system (hereinafter referred to as RSMS) 12 that calculates subscribers' fees, etc., and a transmission earth station 13 that converts and transmits programs and RSMS data output from the RSMS 12 into satellite signals. And a broadcasting satellite 14 for transmitting the signal transmitted from the transmitting earth station 13 to the satellite broadcasting receiver 15 on the subscriber side, and receiving the satellite signal transmitted from the broadcasting satellite 14 to the TV or VTR. The satellite broadcasting receiver 15 outputs the subscriber information recorded on the smart card 16 and transmits it to the RSMS 12 through the PSTN, and stores the subscriber's individual information and the subscriber's unique address. And comprises a smart card 16 that stores the descrambled data in the control information and pay program for the amount of the grain side, TV (or TVR) (17) connected to the satellite broadcast receiver (15).

FIG. 2 is a block diagram showing the internal configuration of the satellite broadcasting receiver shown in FIG. 1, and receives a wireless signal transmitted from a broadcasting satellite through an antenna under the control of a microcomputer 35, and converts it into a digital signal. 20), a demultiplexer 22 for exchanging control signals through a bus with a microcomputer 35, separating and outputting a video stream and an audio stream from a transport stream input from the receiver 21, and the demultiplexer 23. A descrambler 23 for descrambling the scrambled video stream according to a read value applied from the RAM, a RAM 24 which is a storage device connected to the demultiplexer 22, and a storage device that is connected to the video decoder 26. RAM 25, a video decoder 26 which decodes the video stream output from the demultiplexer 22 and outputs original video data, and the demultiplexer 22. An audio decoder 27 that decodes the audio stream output from the audio stream and outputs an original audio signal, and an NTSC encoder that encodes the video data output from the video decoder 26 into a TV broadcast method (ie, an NTSC broadcast method) signal. (28), a filter (29) for filtering the video signal output from the NTSC encoder (28), a filter (30) for filtering the audio signal output from the audio decoder (27), and a storage device on the bus. A key provided in the satellite broadcasting receiver having a connected ROM 31, an EEPROM 32 for storing intermediate processing data applied from the microcomputer 35, and a plurality of control keys operated by a user. Input unit 33, receiver 34 for receiving a remote control command of the remote control input by a user operation, and each control in the satellite broadcasting receiver in accordance with control commands input from the receiver 34 and the key input unit 33. A microcomputer 35 controlling the operation of the device, a modem 36 connected to a public telephone network (PSTN) to enable data communication via the microcomputer 35 and the PSTN, and a smart card 38 by the microcomputer 35. And a smart card interface unit 37 for interfacing information reading and recording, and a smart card 38 in which subscriber information and information such as usage amount and subscriber's unique address are recorded.

3 is a flowchart showing the message receiving operation of the satellite broadcasting receiver shown in FIG.

The operation of the present invention will be described as follows with the above configuration.

First, with reference to FIG. 1, a schematic operation of message transmission and reception to a specific subscriber will be described.

In general, the smart card 16 provided to the subscribers of the satellite broadcasts information such as personal information of the subscriber, for example, the ID of the subscriber, and also records the satellite broadcast usage of the subscriber. Each smart card 16 is assigned a unique address, and the satellite broadcast receiver 15 recognizes the individual address for each smart card. Then, the individual address of the recognized smart card is transmitted to the resource and subscriber management system 12 provided in the broadcasting station through the subscriber's information (that is, together with the public wired communication network (PSTN), and the resource and subscriber management system ( 12) records all information (e.g., smart card number, name, address, etc.) related to the satellite broadcasting subscribers, and the subscriber information (subscriber ID, usage amount, etc.) transmitted from the subscriber side receiver 15 is recorded. Unique address), and manages subscribers, such as calculating the viewer's fee, etc. For example, calculates the fee by checking the usage of the satellite broadcasting service recorded on the smart card 16. You can determine whether or not.

Thus, if the subscriber has not paid the fee due to the due date, a message is sent to the subscriber indicating that the fee has not been paid. That is, the resource and subscriber management system 12 outputs a transport stream including a message to be transmitted to a specific subscriber to the program and data signal source 11, which is transmitted through the transmitting earth station 13 and the satellite 14. . According to the satellite broadcasting transceiver matching standard in Mugunghwa satellite broadcasting, the set length of the RSMS message included in the transport stream is 184 bytes, indicating that the RSMS message is a pointer byte, and the satellite broadcasting receiving address (that is, unique to the smart card of the subscriber to be received). Address byte) and a transfer message.

Therefore, the satellite broadcast receiver 15 receives the transport stream transmitted through the broadcast satellite 14, and separates the video stream and the audio stream from which the video signal and the audio signal of the program are compressed, and also the RSMS message. Separate. Then, the address included in the separated RSMS message is read and compared with the unique address value recorded in the smart card 16. If the match is matched, the transmission message is displayed on the OSD and the like.

Thus, a specific message appears on the TV 17 screen along with the video of the program the subscriber is watching.

The detailed operation of the satellite broadcasting receiver 15 will be described with reference to the block diagram shown in FIG.

In FIG. 2, first, the microcomputer 35 reads the information recorded in the smart card 38 through the smart card interface 37. That is, the unique address of the smart card, the name and usage of the subscriber, and the descramble control data necessary for watching the paid program are read. And, the information of the subscriber or the unique address of the smart card of the information read as described above to be output to the modem 36, the modem 36 is controlled by the microcomputer 35, the input data is an analog signal The PSTN is transmitted to the resource and subscriber management system (FIG. 12) installed in the broadcasting station through the PSTN. Then, the control command by the key operation of the viewer inputted from the key input unit 33 and the receiver 34 is checked to control each device provided in the satellite broadcast receiver.

The wireless analog signal received by the antenna under the control of the microcomputer 35 is QPSK demodulated by the receiver 21 and then input to the demultiplexer 22 as a digital signal transport stream.

The demultiplexer 22 separates the transport stream into a video stream, an audio stream, and an RSMS message so that the video stream is input to the video decoder 26, and the audio stream 27 is input to the audio decoder 27, and the RSMS. The message stream is input to the microcomputer 35 via the bus. When the input video stream is a scrambled signal, the demultiplexer 27 applies the descrambler 27 read from the smart card 38 transmitted from the microcomputer 35 to the descrambler 23. 23) descrambles the input data string.

The video decoder 26 decodes the video stream compressed by the MPEG standard and outputs the video data in units of one frame. The video data in the frame unit is converted into an NTSC signal, which is a TV broadcast method, by the NTSC encoder 28 and then output through the filter 29. The audio stream is decoded by the audio decoder 27 to restore the original audio data, and is output as an audio signal through the filter 30.

The microcomputer 35 receiving the RSMS message stream compares whether the address of the RSMS message stream matches the unique address of the smart card read from the smart card 38 through the smart card interface 37, and if so, transmits the RSMS. Controls the message to be displayed in text with video in combination with video data.

The procedure of receiving a message by the satellite broadcast receiver shown in FIG. 2 will be described with reference to the flowchart shown in FIG.

In step S31 and step 32, when power is supplied, the microcomputer 35 initializes each device of the receiver, enables each interrupt, and initializes the OSD.

In step S33, the information recorded on the smart card, that is, the subscriber ID, the smart card unique address, and the like is read and stored in the memory, and in step S34, the satellite broadcast receiver receives the satellite broadcast signal transmitted from the satellite. Operate.

Then, in step S35, it is determined whether there is a remote control signal of the remote controller, and if there is, proceed to step S36 to execute a remote control command of the remote controller. In case of volume control command, use up / down control by the relevant volume lever.

However, if there is no remote control command of the remote controller, it is checked whether there is an OSD service data which is an RSMS message in the transport stream received in step S37. Thereby, if there is no OSD service data, the process proceeds to step S35 and repeats. If there is an OSD service data (ie, RSMS message), it compares whether the address value of the RSMS message matches the unique address of the smart card stored in step S33. If there is a match, the OSD service data is controlled to be displayed in text on the screen in step S39, and if it does not match the unique address of the smart card, the process returns to step S35 to repeatedly check the remote control signal.

Therefore, the broadcasting station can deliver a message only to a specific subscriber, and the subscriber side can receive a message transmitted to the subscriber.

As described above, the present invention enables the broadcasting station to selectively transmit a message only to a specific subscriber by using the unique address assigned to the smart card, and also has the effect that the subscriber can receive the message transmitted from the broadcasting station. Using this, there is an excellent effect that can provide a variety of services to the subscriber.

Claims (2)

A satellite broadcasting receiver comprising: a receiver for digitally converting and demodulating an analog radio signal received by an antenna and outputting a transport stream of satellite broadcasting; and a transport stream input from the receiver as a video stream, an audio stream, and an RSMS message. A demultiplexer to separate and output each, a video decoder to decode the video stream output from the demultiplexer and output the original video data before compression, and decode and decode the audio stream output from the demultiplexer. An audio decoding unit for outputting the previous audio signal, an NTSC encoding unit for converting video data output from the video decoding unit into an NTSC broadcast signal, a key input unit and a remote control signal for transmitting control commands by a viewer's operation to the microcomputer. It is day to receiver and smart card A smart card interfacing unit for recording the data and reading the recorded data, and controlling the operation of each device according to control commands applied from the key input unit and the remote control signal receiver, and recording the smart card through the smart card interfacing unit. Reads the unique address and compares the received address of the RSMS message output from the demultiplexer with the smart card's unique address, and if it matches, the micom to on-screen display the RSMS message and connected to the public wired network (PSTN). A satellite broadcasting receiver capable of delivering a message to an individual subscriber, comprising a modem for exchanging data with a resource management system and a subscriber management system of a broadcasting station. In the satellite broadcasting receiving method capable of selectively delivering messages to individual subscribers, Initializing the receiver, Reading and storing the unique address and information of the smart card recorded on the smart card, Transport sent through the satellite Receiving the stream; checking whether there is OSD service data from the broadcasting station in the transport stream received in the step; and if the OSD service data is present in the determining step, the receiving address of the service data is read from the smart card. And comparing the stored address with the stored address, and if the address matches in the step, displaying the corresponding ODS service data on-screen by text.