KR20020072857A - Data broadcasting receiving apparatus and method - Google Patents

Abstract

PURPOSE: A data broadcasting receiving device and a method thereof are provided to automatically renew the data broadcasting channel and contents while checking the data broadcasting receiving in the process of TV broadcasting, thereby supplying updated information in a short time as desired by a user. CONSTITUTION: A data broadcasting receiving device includes a data broadcasting demodulation part(303) for demodulating data broadcasting received in a data broadcasting receiving part(302), a data sorting part(315) for editing the contents of the demodulated data broadcasting, a data broadcasting storing part(313) for storing the number of a channel of the data broadcasting currently received and the edited data broadcasting contents, a CPU(311) for storing the channel number to the data broadcasting storing part by checking output data from the data broadcasting demodulation part in the beginning, and controlling the data broadcasting receiving part to receive the data broadcasting for the stored channel number in case of data broadcasting renewal to renew the corresponding data broadcasting contents, a power detection part(309) for transmitting the power to the CPU after detecting the power state, and a power control part(310) for supplying the power under the control of the CPU.

Description

DATA BROADCASTING RECEIVING APPARATUS AND METHOD}

The present invention relates to data broadcasting technology, and more particularly, to a data broadcasting receiving apparatus and a method thereof.

As broadcasting technology is developing, data broadcasting technology is being presented.

For example, data broadcasting information carried on a TV video signal, such as additional information such as teletext and caption carried on a vertical blanking interval (VBI) line in analog broadcasting, and information in a bit stream form included in a certain area in digital broadcasting Received and displayed to the user.

In addition, a communication device (telephone, modem, etc.) may be provided in the data broadcasting receiver to connect to a data server of a broadcasting station, request information necessary, and receive services such as online shopping.

In general, a data broadcast receiver includes a device for decoding data broadcast information superimposed on a video signal, a display device for displaying a video signal and received data broadcast information, and a device related to communication such as a modem.

That is, in general, the data broadcast transmission / reception system includes an image source producer 101, an image encoder 102, a multiplexer 103, a high frequency transmitter 104, and an EPG content producer 105 as illustrated in the configuration diagram of FIG. 1. A transmission system including a content producer 107 and a data server 108 for producing related content such as an automated device 106, a program, an independent service, an interactive service, a decoder 112, a modem, a telephone. Two-way communication system including a reception system which is a conventional data broadcasting receiver 111 having a communication unit 113, etc., a terminal server 109 and a public switched telephone network (PSTN) 110 for interactive service. It consists of.

Referring to the operation of the general data broadcast transmission and reception system as follows.

The image source maker 101 is an apparatus for producing an image to be actually transmitted by using a camera or the like, and outputs the produced image signal to the image encoder 102 and the automation device 106.

The video encoder 102 is a device for producing a produced video signal according to an actual TV signal, and converts the video signal to a multiplexer 103 after converting the video signal.

In addition, EPG content producer 105 is produced in the form of a letter by referring to the broadcast schedule of the broadcasting station.

That is, the EPG content producer 105 provides contents for an EPG (Electronic Program Guide) service that can notify a program of future programs and time information of a broadcasting station and make a program reservation. The produced data at that time is output to the automation device 106.

The automation device 106 automatically generates information data such as current program information, current time, etc. in consideration of the image signal and EPG content output from the EPG content producer 105, and generates the generated information data into the data server 112. )

In addition, the content producer 107 may include program-related content producers 107-1, such as news, dramas, and advertisements, independent service-related content producers 107-2 such as dates, living, stocks, real estate, and traffic information; And a content producer 107-3 related to an interactive service consisting of online services such as games, voting, home banking, teleshopping, and distance education, and other content producers 107-4 related to necessary services other than the service. In the case of drama, the content producer 107-1 includes content such as characters, background music, and shooting locations in case of dramas, detailed information in documentaries, glossary of contents, current travel information, etc., sports history, schedule, and player introductions. It is configured to provide a side channel service for providing the content of.

The content producer 107 divides and outputs the content that requires data broadcasting by a broadcasting station for each content and outputs the content to the data server 108.

The data server 108 edits the data output from the automation device 106 and the content producer 107 in a predetermined form and simultaneously edits the data to meet the communication needs while communicating with the terminal server 109. Then, the content of the data broadcast produced at that time is output to the multiplexer 103.

The multiplexer 103 multiplexes the video signal input from the video encoder 102 and the data content output from the data server 108, edits the data into one TV signal, and outputs the result to the high frequency transmitter 104.

The high frequency transmitter 104 converts an input video signal into an RF frequency assigned to a broadcasting station in order to transmit it to each home, and then increases power and transmits the same through a transmitting antenna.

Therefore, when the data broadcast receiver 111 receives a radio frequency (RF) signal transmitted through an air channel, the data broadcast receiver 111 converts the signal into a baseband signal and displays the image on the screen of the image display apparatus.

Then, the decoder 112 included in the data broadcasting receiver 111 decodes the data broadcasting signal contained in the video signal, stores the data broadcasting contents, and converts it into a video signal of a predetermined form upon user's request. Display on the screen of the video display device.

In addition, the data broadcast receiver 111 includes a communication unit 113 for online-related communication, and the communication unit 113 is a communication device for requesting a broadcasting station when a user needs more information while watching data broadcasting. It is connected to the public telephone switching network (110).

The public switched telephone network 110 is basically a communication network supporting voice information exchange or service in the use of a telephone in a home, and a data communication service in data broadcasting.

That is, the public switched telephone network 110 is a telephone network for connecting a user of a broadcasting station with a content producer while providing a voice data exchange service by connecting users' telephones through an exchange.

The terminal server 109 connects the public switched telephone network 110 and the data server 108 as a data broadcasting terminal server.

Therefore, when the user's communication request is connected to the public switched telephone network 110 through the communication unit 113, and then connected to the terminal server 109 through a dedicated telephone rotation of the broadcasting station, the terminal server 109 responds to the user's request. Edit the output to the data server 108.

That is, in the data broadcast, the terminal server 109 and the public switched telephone network 110 enable bidirectional information transmission between the broadcasting station and the user.

Meanwhile, as shown in the block diagram of FIG. 2, the data broadcast receiver of the related art includes an image receiver 201, a data broadcast decoder 202, a controller 203, a user key input unit 204, and an interface unit 205. ), A display unit 206, a memory 207, and a communication unit 208.

The operation of the conventional data broadcasting receiver will be described below.

First, when the image high frequency signal RF is received, the image receiving unit 201 converts the high frequency signal RF into a baseband signal and outputs it to the data broadcasting decoder 202.

The data broadcast decoder 202 extracts and decodes the data broadcast signal from the baseband video signal and outputs the decoded data broadcast signal to the controller 203.

Accordingly, the controller 203 edits the contents of the data broadcast input from the data broadcast decoder 202 and stores the contents of the data broadcast in the memory 207.

The user key input unit 204 is a device for setting data broadcasting related control by a user's key input, and the control signal from the user key input unit 204 is input to the interface unit 205.

The interface unit 205 analyzes a user's control signal and inputs the analysis result to the controller 203.

Accordingly, the controller 203 reads the contents of the data broadcast stored in the memory 207 and displays them on the screen of the display unit 206 under the control of the user.

In addition, the interface unit 205 communicates with the communication unit 208 under the control of the user.

In this case, the controller 203 and the interface unit 205 are connected to the communication unit 208 by outputting the information request required by the user by the configuration of the control device connected to the two-way information transfer between the broadcasting station and the user is possible.

However, since the conventional data broadcast receiver can receive only the data broadcast of the broadcasting station to watch, it is difficult to cope with the multi-channel data broadcast in the future.

That is, data broadcasting to be established in the future is expected to develop a variety of unique content in order to increase viewers of each broadcasting station, but the conventional data broadcasting receiver can receive only the data broadcasting of the broadcasting station to view data broadcasting from each broadcasting station There is a problem in that it is not possible to effectively receive the data and at the same time it takes a certain time in order to receive the data broadcast when switching between different channels.

In addition, the conventional data broadcasting receiver has a problem in that a large amount of time must be waited to receive new data because the existing stored data is erased when the user turns off the TV power while watching data broadcasting.

Therefore, in order to improve the conventional problem, the present invention searches all channels of the data broadcast currently received in real time, stores the channel currently being broadcast, and simultaneously edits and stores the data broadcast contents by content and searches only channels that are broadcasting data. Data broadcasting receiving apparatus and method for continuously receiving the latest information by displaying the data broadcasting contents currently stored for each content when the user wants to watch the broadcasting by continuously updating the data broadcasting contents stored by the contents The purpose is to provide.

In addition, another object of the present invention is to display all channels that are immediately broadcasted on TV by receiving only channels through which data broadcasts are transmitted in a standby state and updating data contents continuously in a standby state.

1 is a block diagram of a general data broadcast transmission and reception system.

2 is a block diagram of a conventional data broadcasting receiver.

3 is a block diagram of a data broadcast receiver for an embodiment of the present invention.

4 is a flowchart illustrating operations during data broadcast storage in the embodiment of the present invention.

5 is an exemplary view showing a data broadcast storage format for each channel in an embodiment of the present invention.

Figure 6 is an exemplary view showing a content storage format for each content in an embodiment of the present invention.

7 is a flowchart illustrating operations during data broadcast update according to an embodiment of the present invention.

8 is a flowchart illustrating an operation for updating data broadcasts in a standby state according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

301: video signal receiver 302: data broadcast receiver

303: data broadcast decoding unit 304: switching unit

305: display unit 306: display control unit

308: interface unit 309: power detector

310: power control unit 311: CPI

313: data broadcasting storage unit 315: data selection unit

In order to achieve the above object, the present invention provides a data broadcast receiving unit 302, a data broadcast decoding unit 303, a data selecting unit 315 for editing data broadcasts for each content, and data broadcasting even when the power is turned off. A data broadcast storage unit 313 for maintaining a storage state of data broadcast contents for each channel number and content, and a channel number which is initially broadcasted in the data broadcast storage unit 313 and determined to be a data broadcast update. The data broadcast receiver 302 is controlled to sequentially tune the data broadcast of the channel number stored in the data broadcast storage 313, and the data broadcast decoder 303 is checked to indicate only the channel number currently being broadcast. Apparatus and method comprising a CFI 311 for updating the data broadcast content while storing in the data broadcast storage unit 313 Characterized in that.

In addition, in the apparatus and method of the above configuration, a power detector 309 for detecting a power state and transmitting the same to the CPI 311 and a power controller 310 for selectively supplying power under the control of the CPI 311. In addition, when the CPI 311 determines the standby state, the power control unit 310 is controlled to supply the minimum power required for data broadcast reception at a predetermined time interval, and then the data broadcast storage unit 313 is controlled. While controlling the data broadcast receiving unit 302 to sequentially tune the data broadcast of the stored channel number, the data broadcast decoding unit 303 checks and stores only the channel number currently being broadcasted in the data broadcast storage unit 313. The data broadcasting storage unit 313 may be configured to update the data broadcasting contents.

In the above, the data broadcast update may be set arbitrarily by the user.

Hereinafter, the present invention will be described in detail with reference to the drawings.

3 is a block diagram of a data broadcasting receiver for an embodiment of the present invention, as shown therein, for executing a ROM (312) for storing a data broadcasting algorithm program and executing a program stored in the ROM (312). And a video signal receiver 301 for tuning a specific channel based on a control signal by inputting a high frequency (RF) video signal and converting a broadcast signal of the channel into a baseband video signal. A data broadcast receiver 302, a data broadcast decoder 303 which extracts and decodes a data broadcast from a baseband video signal of the data broadcast receiver 302, and displays a video signal or a data broadcast OSD signal on a screen. The display unit 305 and only the video signal from the video signal receiver 301 to the display unit 305, or output only the data broadcast OSD signal; A switching unit 304 for incorporating a data broadcasting OSD signal into an arbitrary position of an image signal in the video signal receiving unit 301, and the video signal receiving unit 301 under the control of the CPI 311 through a system bus. While controlling channel channel selection of the data broadcasting receiver 302, the data broadcasting OSD signal is output to the switching unit 304, and a control signal for controlling the display of the data broadcasting OSD signal and the video signal from the video signal receiving unit 301 is provided. A display control unit 306 for outputting, a data selection unit 315 for editing the data broadcast contents (including a telephone number) decoded by the data broadcast decoding unit 303 for each content, and a channel number from the CPI 311. And a data broadcast display unit 313 for storing the data broadcast contents for each content in the data selector 315 and controlling the user's data broadcast display. A user key input unit 307 having a key for inputting, an interface unit 308 for transmitting the user key input from the user key input unit 307 to the CPI 311 via a system bus, and for online execution. A communication unit 314 for transmitting a user's request to a broadcasting station, a power detection unit 309 which detects a standby state of the power supply, and transmits the power to the CPI 311, and performs power control by a command of the CPI 311. The power control unit 310 is configured.

The data broadcast storage unit 313 is configured as a flash memory to maintain a storage state of data broadcast contents even without an operation power source.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

The video signal receiving unit 301 and the data broadcasting receiving unit 302 set a specific channel by a control signal transmitted from the display control unit 306 as a high frequency (RF) image signal as an input, and then receive a high frequency (RF) signal of the corresponding channel. Convert to baseband video signal.

The video signal receiver 301 outputs a baseband video signal to the switching unit 304, and the data broadcast receiver 302 outputs a baseband video signal to the data broadcast decoder 303.

At this time, the data broadcast decoder 303 extracts and decodes the data broadcast from the baseband video signal input from the data broadcast receiver 302 and outputs the data broadcast to the CPI 311 through a system bus.

Accordingly, the CAPI 311 stores the data broadcast channel number in the data broadcast storage 313 and transmits the data broadcast contents to the data selector 315.

The data selecting unit 315 separates the data broadcasting contents by contents or channels and simultaneously stores the data broadcasting contents by associating a necessary telephone number for communication with the contents or channels in order to perform an online service. ).

Meanwhile, the CPI 311 outputs a control signal to the display controller 306 to display an image on the screen of the display unit 305.

The display controller 306 outputs a control signal such that the switching unit 304 outputs an image signal to the display unit 305 while controlling the video signal receiver 301 with reference to the control signal.

The switching unit 304 outputs an image signal input from the video signal receiving unit 301 to the display unit 305 to display an image on the screen.

In addition, when a user inputs a data broadcasting related control key in the user key input unit 307, the interface unit 308 converts an input signal into a signal that can communicate with the CPI 311 and then the CFI 311 through a system bus. To send).

The CPI 311 analyzes a control key signal related to data broadcasting by a user and controls the data broadcasting storage unit 313 to output data broadcasting contents to a system bus, and simultaneously displays a data broadcasting OSD on a screen of the display unit 305. The display control unit 306 is controlled to display.

Accordingly, the display control unit 306 controls the switching operation of the switching unit 304 to display only the OSD or to display the image and the OSD overlap, so that the data broadcasting OSD is displayed on the screen of the display unit 305.

In addition, when the on-line control signal is input from the user key input unit 307, the interface unit 308 transmits to the CPI 311 through the system bus.

The CPI 311 analyzes the input-related online control signal to display the data broadcasting contents stored in the data broadcasting storage unit 313 or the data broadcasting contents input in real time from the data broadcasting decoding unit 303 to the display controller 306. While transmitting and displaying on the screen of the display unit 305 connected to the switching unit 304, the communication unit 314 is controlled to dial a stored telephone number or a real-time input telephone number to enable online.

The power detector 309 checks the power and transmits the standby power or the power-on state to the CPI 311.

The CPI 311 determines whether to cut off power related to image processing and audio processing of the receiver or to turn on only power required to receive and store data broadcasts, and accordingly determines the power control signal 310. To send.

Accordingly, the power control unit 310 turns on / off power to each operation block in accordance with the control signal from the CPI 311.

However, in the embodiment of the present invention, an operation for data broadcast storage will be described with reference to the operation flowchart of FIG.

As soon as the power is turned on, the CPI 311 starts to store data broadcasts and, first, sets an initial state of the data broadcast receiver 302. For example, an initial channel setting, a channel switching time (data broadcast reception time for each channel), and the like. And the data broadcast is received (S401).

Next, it is determined whether data is broadcast in the currently received broadcast (S402).

If the data broadcast does not exist in the channel currently received in step S402, the data broadcast is switched to another channel to receive the data broadcast (S407 and S401).

If data broadcasting exists in the currently received channel, the currently input channel number is stored in the data broadcasting storage unit 313 (S403), and the data broadcasting decoding unit 303 decodes the data broadcasting (S404) and then selects data. In step 315, data broadcasting is edited for each channel and content (S405), and the edited data broadcasting contents are stored in the data broadcasting storage unit 313 (S406).

Thereafter, the same process as described above proceeds to step S401 to store data broadcasts of other channels.

However, in the above process, the data broadcast storage format stored in the data broadcast storage unit 313 is divided and stored for each content and channel, as illustrated in FIG. 5.

In addition, the format of storing the content content separated in the above process is the same as the example of FIG. 6, which represents a format in which each content (eg, game, voting, home banking, shopping) in the interactive service is separately stored. .

Accordingly, the configuration format illustrated in FIGS. 5 and 6 may be configured to be displayed in the OSD form on the screen of the display unit 305.

For example, if the user's data broadcast control key is initially input to the CPI 311, the contents of FIG. 5 are displayed on the screen of the display unit 305, and the user wants to control the interactive service. After displaying the contents on the screen of the display unit 305, the user can be configured to display the desired lower content in the OSD of a form suitable for control while viewing the contents of FIG.

In addition, in the present invention, in order to quickly update the channel number so as to receive the latest information, the operation of FIG. 7 is performed in order to determine whether or not there is data broadcasting of all channels and update the data broadcasting channel based on the channel number of the data broadcasting. The same process as the flowchart will be performed.

First, when the CTU 311 determines the data broadcast update, the data broadcast receiver 302 controls the display control unit 306 to receive the data broadcast (S701) and determines whether there is a data broadcast for the currently received broadcast (S702). ).

If there is no data broadcast in the currently received broadcast, the CPI 311 controls the data broadcast receiver 302 through the display controller 306 to switch to another channel stored in the data broadcast storage 313 (S707). After receiving the data broadcast (S701), it is determined whether the data broadcast again (S702).

If the data broadcast is present in the currently received broadcast, the CPI 311 checks the currently input channel number and stores it in the data broadcast storage 313 (S703), and the data broadcast decoder 303 decodes the data broadcast. After the data selection unit 315 edits the data broadcast for each content (S705) and stores the edited data broadcast content in the data broadcast storage unit 313 (S706), it is updated.

Thereafter, the CPI 311 controls the data broadcast receiving unit 302 through the display control unit 306 to switch to another channel stored in the data broadcasting storage unit 313 and updates another data broadcast receiving channel. The same process as above will be performed.

In the present invention, in order to receive the latest information quickly, the same process as in the operation flow chart of Figure 8 in order to determine the presence or absence of data broadcasting of all channels in the standby state and to update the data broadcasting channel based on the channel number of the data broadcasting This will be described as follows.

First, the CPI 311 checks the power input state of the power detector 309 to determine whether it is in the standby state (S801).

If it is determined that the power-on state is not the standby state, the CPI 311 is controlled to perform the process of FIG. 7.

If it is determined that the standby state, the CPU 311 determines whether or not the power supply control (S802).

In this case, when the power control period is not in the CPI 311, the power control unit 310 controls the power control unit 310 to turn on only the power related to the data broadcast reception and executes the data broadcast update process.

Accordingly, the CPI 311 determined to update the data broadcast in the standby state controls the display control unit 306 to receive the data broadcast in the data broadcast receiver 302 (S803), and checks whether there is data broadcast for the currently received broadcast. It is determined (S804).

If there is no data broadcast in the currently received broadcast, the CPI 311 controls the data broadcast receiver 302 through the display controller 306 to switch to another channel stored in the data broadcast storage 313 (S810). After receiving the data broadcast (S803), it is determined whether the data broadcast again (S804).

If the data broadcast is present in the currently received broadcast, the CPI 311 checks the currently input channel number and stores it in the data broadcast storage 313 (S805), and the data broadcast decoder 303 decodes the data broadcast. In operation S806, the data selection unit 315 edits the data broadcast for each content (S807), and stores the edited data broadcast contents in the data broadcast storage unit 313 (S808).

Thereafter, the CPI 311 determines whether the update operation for all channels is completed (S809).

Therefore, when the update operation for all channels is not finished, the data broadcast receiver 302 is controlled through the display controller 306 to switch to another channel stored in the data broadcast storage 313 to receive another data broadcast. The process of updating the channel is performed again from the process (S803). On the contrary, if the update operation for all the channels is completed, it is determined whether the power is controlled (S802).

On the other hand, when data broadcasting is updated and stored for all channels, the CPI 311 determines the power control process (S802) to control the power control unit 310 to cut off power related to data broadcast reception, thereby reducing TV power consumption. In this case, the internal timer is operated at the same time.

This process (S811) is a process in which the CAPI 311 checks the data broadcasting power cut-off time in the standby state by using the built-in timer, and checks the predetermined time and determines that power is supplied for updating the data broadcasting after a predetermined time elapses. By controlling the power control unit 310 again to turn on the power required for data broadcast reception.

That is, the operation flowchart of FIG. 8 is to reduce power consumption while continuously updating the data broadcast by controlling the power supply to update the data broadcast contents at predetermined time intervals in the standby state.

As described in detail above, the present invention can update the data broadcasting channel and contents automatically while checking whether the data broadcasting is received during TV broadcasting, so that the user can provide the latest information in a short time when the user wants to watch the data broadcasting. There is an effect that can provide.

In particular, the present invention has the effect of increasing the convenience of the user by reducing the power consumption and providing the latest information at a quick time by receiving data broadcasts at regular intervals in a standby state and continuously updating the data broadcast contents. .

Claims (8)

Data broadcast decoding means for decoding the data broadcast received by the data broadcast receiving means, data selection means for editing the content of the decoded data broadcast, a channel number of the currently received data broadcast, and the data broadcast content edited above. Data broadcast storage means for storing the data broadcast data; and initially checking output data of the data broadcast decoding means, and storing a channel number with data broadcast in the data broadcast storage means, and in the data broadcast storage means when it is determined that the data broadcast is updated. And system control means for controlling the data broadcast receiving means to receive data broadcast only for the stored channel number and updating the content of the data broadcast. The system control means according to claim 1, wherein the system control means controls the power control means at predetermined time intervals so as to update the contents of the data broadcast sequentially for all channel numbers stored in the data broadcasting storage means at predetermined time intervals when it is determined that the standby state is established. And supplying only power necessary for broadcast reception. 3. The data broadcast receiving apparatus according to claim 1 or 2, wherein the system control means includes a power detection section for detecting a power supply state and a power control section for selectively supplying power by a control signal. The data broadcast receiving apparatus according to claim 1, wherein the data sorting means edits the content of the data broadcast for each channel for each content. The data broadcast receiving apparatus according to claim 1, wherein the data broadcast storing means comprises a flash memory. A first step of storing a channel number at which the data broadcast is initially received, a second step of sequentially determining whether or not the data broadcast is received only for the channel stored when the data broadcast is determined to be updated, and the data broadcast being received And storing the channel number only, and simultaneously editing and storing contents of the data broadcast for each content. A first step of storing a channel number at which data broadcasting is initially received, a second step of determining whether the standby state is in a standby state, and if the standby state is determined in the above state, data broadcasting is sequentially performed only for the channel stored at a predetermined time interval And a fourth step of storing the channel number and editing and storing the content of the data broadcast for each content only when the data broadcast is received. The data broadcast reception method according to claim 5 or 6, wherein a data broadcast update period is arbitrarily set by a user.