KR20070079370A - Mobile broadcasting receiver and method for processing audio and video data - Google Patents

Abstract

A mobile broadcasting receiver and a method for processing mobile broadcasting receiving data are provided to simultaneously receive and process digital broadcasting signals of at least two or more channels. A CDM(Code Division Multiplexing) unit(110) simultaneously receives a plurality of digital broadcasting channels. A TS(Transport Stream) demultiplexer(120) processes audio and video data for a plurality of the received digital broadcasting channels. An A/V decoder(150) displays a plurality of the processed digital broadcasting channels on one screen. An output unit(160) outputs the decoded audio and video data.

Description

Mobile broadcast receiver and mobile broadcast reception data processing method {MOBILE BROADCASTING RECEIVER AND METHOD FOR PROCESSING AUDIO AND VIDEO DATA}

1 is a block diagram of a mobile broadcast receiver according to a first embodiment of the present invention.

2 is a flowchart of a method for processing mobile broadcast reception data according to the first embodiment of the present invention.

3 is a block diagram of a mobile broadcast receiver according to a second embodiment of the present invention.

4 is a flowchart of a method for processing mobile broadcast reception data according to a second embodiment of the present invention.

5 is a block diagram of a mobile broadcast receiver according to a third embodiment of the present invention.

The present invention relates to a method and apparatus for receiving and processing a plurality of broadcast channels simultaneously in a mobile broadcast receiving terminal.

Digital broadcasting systems capable of receiving digital broadcasting signals between mobiles have been commercialized. For example, a mobile broadcasting service called Digital Multimedia Broadcasting (DMB) or Digital Audio Broadcasting (DAB) is being implemented. This broadcasting system is capable of receiving digital broadcast signals between mobiles based on satellite or terrestrial waves. It provides services that can be.

The mobile terminal receiving the digital broadcast signal is emphasized as portable as the performance of the terminal in that it receives the broadcast signal between mobiles. The portability of the terminal may be regarded as meaning that the terminal is small and light. Due to the small size of the mobile broadcast receiving terminal, the processor, memory (storage space), and display device mounted in the terminal are also limited.

Nevertheless, since the mobile broadcast receiving terminal needs to implement a function for receiving a digital audio signal or a digital audio / video signal, user-friendly convenient and useful functions for various digital broadcast signals should be loaded. For example, a recording function may be provided. When simultaneous reception and display of multiple channels are implemented, convenience and performance of the mobile broadcast reception terminal may be improved.

An object of the present invention is to provide a mobile broadcast receiver and a mobile broadcast reception data processing method capable of simultaneously receiving and processing digital broadcast signals of at least two channels in a mobile broadcast receiver.

It is another object of the present invention to simultaneously receive at least two channels of digital broadcast signals from a mobile broadcast receiver and to display and display the received multi-channel digital broadcast signals on one screen or to select one channel according to a user's selection. The present invention provides a mobile broadcast receiver and a mobile broadcast reception data processing method for recording another channel while watching or playing and displaying the recorded channel at the same time.

According to an aspect of the present invention, there is provided a mobile broadcast receiver comprising: a receiver for simultaneously receiving a plurality of digital broadcast channels; A data processor for processing audio and video data for each of the plurality of digital broadcast channels; A decoder for decoding the processed plurality of digital broadcast channels to display on one screen; An output unit for outputting the decoded audio and video data; Characterized in that it comprises a.

According to another aspect of the present invention, there is provided a mobile broadcast receiver comprising: a receiver for simultaneously receiving a digital broadcast signal of a first channel and a digital broadcast signal of a second channel; A data processor for processing audio and video data for each of the received broadcast signal of the first channel and the broadcast signal of the second channel; A storage unit for storing audio and video data of the first channel or the second channel processed by the data processor; A switching unit for selectively transmitting audio and video data of the first channel or the second channel processed by the data processor and audio and video data stored in the storage unit to a decoder; A decoder for decoding each of the broadcast signals of the selected channel in order to display one as a main picture and the other as a sub picture; An output unit for outputting the decoded audio and video data; Characterized in that it comprises a.

In addition, the mobile broadcast receiver according to the present invention comprises: a receiver for simultaneously receiving a digital broadcast signal of a first channel and a digital broadcast signal of a second channel; A data processor for processing audio and video data for each of the received broadcast signal of the first channel and the broadcast signal of the second channel; A decoder for decoding each of the broadcast signals of the first channel or the second channel processed by the data processor to display one of the main screen and the other of the broadcast signal; A storage unit for storing audio and video data of the first channel or the second channel processed by the decoder; A switching unit for selectively transmitting audio and video data of the first channel or the second channel processed by the decoder and audio and video data stored in the storage unit to an output unit; An output unit for outputting the selected audio and video data; Characterized in that it comprises a.

In accordance with another aspect of the present invention, there is provided a method for processing mobile broadcast reception data, comprising: receiving and decoding a plurality of digital broadcast channels simultaneously; Storing audio and video data for any one of the plurality of digital broadcast channels in a memory unit; According to a user's selection, a video signal for each of the decoded digital broadcast channels is simultaneously displayed by dividing the area on one screen, or one of the decoded digital broadcast channels and the stored video data are simultaneously displayed. Dividing the area on one screen and simultaneously displaying the area; Characterized in that it comprises a.

In addition, the mobile broadcast reception data processing method according to the present invention comprises the steps of simultaneously receiving and decoding a plurality of digital broadcast channels; Displaying a video signal for each of the plurality of decoded digital broadcasting channels according to a user's selection and simultaneously displaying the regions on one screen; Characterized in that it comprises a.

An embodiment of the mobile broadcast receiver and its data processing method according to the present invention made as described above will be described with reference to the accompanying drawings.

A mobile broadcast receiver and a mobile broadcast reception data processing method according to an embodiment of the present invention will be described with reference to a DMB system in a digital mobile broadcast system. The digital mobile broadcasting system to which the present invention is applied is implemented in both satellite-based digital broadcasting systems and terrestrial-based digital broadcasting systems.

In the case of a DMB terminal, a CDM unit (Code Division Multiplexing Receiving Chip) for receiving a broadcast and a separate MPEG2 TS (Transport Stream) to separate various broadcast information and an audio / video stream (A / V Stream) TS Demultiplexer (TS DEMUX), a decoder (A / V DECODER) for converting to display audio / video stream, and further includes a storage device (memory) capable of storing (recording) audio / video data. .

1 shows a configuration of a mobile broadcast receiver according to a first embodiment of the present invention. The mobile broadcast receiver shown in FIG. 1 is equipped with a PIP function capable of simultaneously receiving and displaying two broadcast channels, and a recording function of temporarily storing a broadcast signal of a currently received channel for a short time and displaying the broadcast signal in real time. In other words, a recording / playback function, referred to herein as a time shift, is mounted.

In the embodiment of the present invention, which will be described later with reference to FIG. 1, two channels of a first channel and a second channel are exemplified in a process for a plurality of broadcast channels, and a plurality of broadcast channels are displayed on one screen. In this case, the main screen and the sub-screen are two examples. However, the number of channels processed simultaneously or the number of broadcast channels displayed at the same time may be higher, which is not limited to the present invention because it belongs to a category easily applicable by those skilled in the art from the embodiments of the present invention.

Referring to FIG. 1, the mobile broadcast receiver according to the first embodiment of the present invention includes a CDM unit 110 for receiving a digital broadcast signal of a plurality of channels, broadcast information and A / A in the received digital broadcast signal of the plurality of channels. A TS demultiplexer 120 for separating V streams for each channel, a switching unit 130 for controlling time-shifted storage / playback of the separated channel-specific A / V data, and a main / sub picture processing path; Memory unit 140 for storing the broadcast signal of the channel selected by the switching unit 130, and A / V stream decoding for each of the main picture and the sub picture for the broadcast signal of the channel selected by the switching unit 130 A / V decoder 150 for performing the operation and an output unit 160 for outputting the decoded audio and video signals.

The CDM unit 110 includes a first channel receiver 111 and a second channel receiver 112, and the TS demultiplexer 120 includes a first channel processor 121 and a second channel processor 122. The A / V decoder 150 includes a main screen processor 151 and a sub-screen processor 152, and the output unit 160 includes an audio output unit 161 and a main screen display unit 162. ). The audio output unit 161 may use a speaker, and the display unit 162 may display a main screen and simultaneously display a sub screen 163 and use an LCD.

The CDM unit 110 receives a digital broadcast signal. In receiving the digital broadcast signal, the first channel receiver 111 and the second channel receiver 112 respectively receive digital broadcast signals of different channels. The TS demultiplexer 120 separates the broadcast information and the audio / video (A / V) stream from the MPEG-2 TS of the digital broadcast signal received from the CDM unit 110. At this time, the first channel processor 121 separates the broadcast information and the A / V stream from the digital broadcast signal of the channel received by the first channel receiver 111, and the second channel processor 122 is the second channel receiver ( In step 112, the broadcasting information and the A / V stream are separated from the digital broadcasting signal of the channel.

The switching unit 130 selects a channel to be processed as a main screen and a sub-screen among the broadcast signal of the first channel and the broadcast signal of the second channel, and also the memory unit from the broadcast signal of the first channel and the broadcast signal of the second channel. In step 140, a channel for performing time shift based storage is selected. The A / V decoder 150 decodes the A / V stream of the channel selected by the switching unit 130 so that the A / V decoder 150 can display and decode the A / V stream. The sub picture processor 152 is provided.

Although the illustration is omitted in FIG. 1, device operations for selecting a multi-channel and selecting a main screen, a channel to process sub-pictures, recording and playback based on time shift, and the like are, for example, a keypad-based user interface. Use

When the broadcast signal of the first channel is processed as the main picture and the broadcast signal of the second channel is processed as the sub picture, the A / V stream of the first channel selected by the switching unit 130 is decoded by the main picture processor 151. The processed and decoded audio signal is output through the audio output unit 161 of the output unit 160, and the decoded video signal is displayed as a main screen on the display unit 162 of the output unit 160. In the case of viewing without the sub-screen, the video signal of the corresponding channel is displayed on the entire display unit by the above operation only for the first channel.

Meanwhile, the A / V stream of the second channel selected by the switching unit 130 is decoded by the sub picture processor 152, and the decoded video signal is displayed on the sub picture 163 of the output unit 160. Audio signals of the main screen and the sub-screen may be output to the audio output unit 161 according to a user's selection. In most cases, audio signals of channels displayed on the main screen are output to the speaker.

According to the user's selection, the switching unit 130 transfers the A / V stream of the first channel to the sub-screen processing unit 152 to process the first channel as a sub-screen, and processes the A / V stream of the second channel to the main screen. The second channel may be processed as the main screen by transferring to the processor 151.

On the other hand, when processing the main screen and the sub-screen as described above, according to the user's selection, the switching unit 130 delivers the broadcast channel corresponding to the main screen or sub-screen to the memory unit 140, the main screen or sub-screen based on the time shift The broadcast signal of the screen channel can be stored in real time. The broadcast signal of the stored channel is reproduced according to the user's selection if necessary and displayed on the main screen or sub-screen.

For example, the broadcast signal of the first channel is stored in the memory unit 140 on a time shift basis, and the broadcast signal of the first channel is displayed on the main screen display unit 162 by the main screen processor 151. In addition, the sub-screen processing unit 152 performs sub-screen processing on the broadcast signal of the second channel and displays it on the sub-screen display unit 163. Then, the broadcast signal of the first channel stored in the memory unit 140 is reproduced and processed by the main screen processing unit 151 and displayed on the main screen display unit 162, and the data currently broadcast in real time of the first channel is The sub screen processing unit 152 processes the sub screen display unit 163 to display the sub screen display unit 163.

In this way, when the time shift function is activated, a real-time screen of the channel being watched can be shown in PIP. That is, the previously stored broadcast signal is reproduced and displayed on the main screen, and the current real-time broadcast signal of the same channel is displayed on the sub-screen so that the previously stored broadcast signal and the signal currently being broadcast in real time are simultaneously displayed on one screen. It becomes viewable.

Alternatively, the existing broadcast signal (the first channel in this example) can be reproduced and displayed on the main screen, and the broadcast signal of another channel (in this example, the second channel) at the same time can be displayed on the sub screen. Do. In addition, a broadcast signal of a previously stored channel may be processed as a sub picture, and a real time broadcast signal of the same channel (or another channel) may be displayed as a main picture. On the other hand, in the case of performing the PIP process when the time shift function is operated, the first channel and the second channel maintain the same Walsh code setting.

In FIG. 1, the broadcast signal stored in the memory unit 140 is a broadcast signal before decoding, but an embodiment in which the decoded broadcast signal is recorded and reproduced in the memory unit 140 on a time shift basis is similarly implemented.

2 is a flowchart of a method for processing mobile broadcast reception data according to the first embodiment of the present invention.

The first step S110 is to start recording time shift using a user interface such as a keypad.

The second step (S120) controls the switching unit 130 to record the broadcast signal of the first channel in the memory unit 140, and simultaneously processes and displays the broadcast signal of the first channel as a main screen. The broadcast signal of the second channel is processed and displayed as a sub picture. Of course, according to the user's selection, the broadcast signal of the second channel displayed on the sub-screen may be recorded in the memory unit 140, the first channel is processed as the sub-screen, and the second channel is processed as the main screen. It is possible.

The third step (S130) is a step of determining whether to end recording, and it is a step of determining whether a recording end command is input through the user interface. If it is before the end of recording, the second step S120 is continued.

The fourth step (S140) is a step of determining whether or not a recording is finished and a broadcast signal reproduction command of a channel recorded on the basis of time shift is input. If the playback command is not input at this stage, the time shift recording function is terminated, and if the playback command is input, the process proceeds to the fifth step S150.

The fifth step (S150) reproduces the first channel broadcast signal of the previous time stored in the memory unit 140, processes it as the main screen, and broadcasts the broadcast signal of the same channel (first channel) currently being received in real time. This is a step of processing a sub screen. Of course, in this step, the broadcast signal of the first channel is processed as a sub picture, and the real time broadcast signal of the same channel (first channel) is processed as the main picture, or the broadcast signal of the previously stored first channel is processed as the main picture (or Sub-screen), and the broadcast signal of the second channel may be processed and displayed as a sub-screen (or main screen).

3 shows a configuration of a mobile broadcast receiver according to a second embodiment of the present invention. The mobile broadcast receiver shown in Fig. 3 is an embodiment for background recording (recording in the case of DAB) and reproduction. In this case, the decoded A / V data is stored in the memory unit and reproduced. The selection of the recorded channel and the main / sub picture processed channel is performed in the same manner as in the above-described embodiments of FIGS. 1 and 2. Can be chosen freely. According to this embodiment, the sub-screened broadcast signal can be displayed, a quick channel can be changed to the channel viewed by the PIP, and the background recording function stores the A / V data from the sub-screen processing unit in the memory unit. This allows you to record other channels while watching live broadcasts.

Referring to FIG. 3, the mobile broadcast receiver according to the second embodiment of the present invention includes a CDM unit 310 for receiving a digital broadcast signal of a plurality of channels, broadcast information and A / A in the received digital broadcast signal of the plurality of channels. TS demultiplexer 320 for separating V streams per channel, A / V decoder 330 for decoding A / V streams of the separated channels, and storing / saving A / V data for each decoded channel. A switching unit 340 for controlling a reproduction and main picture / sub picture processing path, a memory unit 350 for storing a broadcast signal of a channel selected by the switching unit 340, and the decoded A / V And an output unit 360 for outputting the signal and the stored A / V signal.

The CDM unit 310 includes a first channel receiver 311 and a second channel receiver 312, and the TS demultiplexer 320 includes a first channel processor 321 and a second channel processor 322. The A / V decoder 330 includes a main screen processing unit 331 and a sub picture processing unit 332, and the output unit 160 includes an audio output unit 361 and a display unit 362. . The audio output unit 361 may use a speaker, and the display 362 may simultaneously display the main screen and the sub screen 363 and use an LCD.

The CDM unit 310 receives a digital broadcast signal. In receiving the digital broadcast signal, the first channel receiver 311 and the second channel receiver 312 respectively receive digital broadcast signals of different channels. The TS demultiplexer 320 separates the broadcast information and the audio / video (A / V) stream from the MPEG-2 TS of the digital broadcast signal received by the CDM unit 310. In this case, the first channel processor 321 separates the broadcast information and the A / V stream from the digital broadcast signal of the channel received by the first channel receiver 311, and the second channel processor 322 is a second channel receiver ( The broadcast information and the A / V stream are separated from the digital broadcast signal of the channel received in step 312).

The A / V decoder 330 converts the main picture processor 331 to decode and display the A / V stream of the first channel, and the sub picture processor 332 decodes the A / V stream of the second channel. To convert it for display.

Although the illustration is omitted in FIG. 3, device operations for selecting a multi-channel, selecting a main screen, a channel to process a sub-screen, recording and playing, etc. use a user interface based on a keypad, for example.

When the broadcast signal of the first channel is processed as the main picture and the broadcast signal of the second channel is processed as the sub picture, the video signal of the first channel is displayed on the main screen display 362, and the video signal of the second channel is The sub screen display unit 363 is displayed. The first channel may be output as the sub-screen and the second channel may be output as the main screen according to the user's selection.

On the other hand, when processing the main screen and the sub-screen as described above, according to the user's selection, the switching unit 340 delivers the broadcast channel corresponding to the main screen or sub-screen to the memory unit 350 while watching the broadcast in real time and other channels You can record the video. The broadcast signal of the stored channel is reproduced according to the user's selection if necessary and displayed on the main screen or sub-screen.

According to the selection of the switching unit 350, the broadcast signal of the channel stored in the memory unit 350 is output to the main screen and the broadcast signal of the same channel is output to the sub-screen, or the broadcast signal of the channel stored in the memory unit 350 is output. It outputs the sub-screen and outputs the broadcast signal of the same channel as the main screen, or selects a broadcast signal of a channel different from the broadcast signal of the channel stored in the memory unit 350 and outputs it as the main screen or sub-screen.

This allows you to record other channels while watching live broadcasts, and also allows you to quickly change channels to the channel you are watching with PIP. In other words, since the two reception channels are received by the first receiver 311 and the second receiver 312, a quick change to a channel desired by the user is possible.

4 is a flowchart of a method for processing a mobile broadcast reception channel according to a second embodiment of the present invention.

The first step S210 is a step of starting the background recording and the display of the PIP function using a user interface such as a keypad.

The second step (S220) is a step of processing and outputting a broadcast signal of a first channel as a main screen, and processing and outputting a broadcast signal of a second channel as a sub picture.

The third step S230 is a step of determining whether the main screen and the sub screen are switched. This step is included here for the convenience of explanation in FIG. 4, but switching between the main screen and the sub-screen can be freely intervened by the user at any stage when the PIP function is driven.

If switching between the main screen and the sub-screen is requested in the third step S230, the process proceeds to the fourth step S240, and the sub-screen processing unit 332 processes the sub-screen for the A / V stream of the first channel and outputs the sub-screen. Then, the main screen processing unit 331 processes the A / V stream of the second channel as the main screen and outputs the main screen.

The fifth step S250 is a step of determining whether to record. In this case, the sub-background is to be recorded as an embodiment. Therefore, if the user inputs a recording command to the sixth step (S260), the broadcast section of the channel being processed as the sub-screen is stored in the memory unit. Record it by passing it to 350. If there is no main screen / sub picture switching, the broadcast signal of the second channel which is the sub picture will be recorded, and if there is a main screen / sub picture switching, the broadcast signal of the first channel which is the sub picture will be recorded.

In the case of reproducing the recorded broadcast signal, the broadcast signal to be reproduced is output to the main screen and the broadcast signal of the channel currently received in real time is output to the sub-screen in the same manner as in the playback described with reference to FIGS. 1 and 2. Or outputs a broadcast signal to be reproduced as a sub picture and outputs a broadcast signal of a channel currently being received in real time to the main picture.

FIG. 5 is a block diagram of a mobile broadcast receiver according to a third embodiment of the present invention, and includes a CDM unit 510 for receiving a digital broadcast signal of a plurality of channels, and broadcast information from the received digital broadcast signal of the plurality of channels. TS demultiplexer 520 for separating A / V streams per channel, and first switching unit 530 for controlling time shift storage / playback of the separated A / V data for each channel and main / sub picture processing paths. ), A memory unit 540 for storing a broadcast signal of a channel selected by the first switching unit 530, a broadcast signal selected by the second switching unit 560, and the first switching unit 530. An A / V decoder 550 that performs A / V stream decoding on each of the main picture and the sub picture of the broadcast signal of the channel selected in the step S, and the storage / playback of the decoded A / V data per channel and the main picture / Second switch for controlling the sub-screen processing path It is configured to include the portion 560 and, the decoded audio and video signals, the memory unit 540, an output unit 570 that outputs audio and video signals stored in the.

The CDM unit 510 includes a first channel receiver 511 and a second channel receiver 512, and the TS demultiplexer 520 includes a first channel processor 521 and a second channel processor 522. The A / V decoder 550 includes a main picture processor 551 and a sub picture processor 552, and the output part 570 includes an audio output part 571 and a display part 572. . The audio output unit 571 may use a speaker, and the display unit 572 may simultaneously display a main screen and a sub screen 573 and use an LCD.

The CDM unit 510 receives a digital broadcast signal. In receiving the digital broadcast signal, the first channel receiver 511 and the second channel receiver 512 respectively receive digital broadcast signals of different channels. The TS demultiplexer 520 separates the broadcast information and the audio / video (A / V) stream from the MPEG-2 TS of the digital broadcast signal received by the CDM unit 510. At this time, the first channel processor 521 separates the broadcast information and the A / V stream from the digital broadcast signal of the channel received by the first channel receiver 511, and the second channel processor 522 is the second channel receiver ( In step 512, the broadcast information and the A / V stream are separated from the digital broadcast signal of the channel.

The first switching unit 530 selects a channel to be processed as a main picture and a sub picture from among the broadcast signal of the first channel and the broadcast signal of the second channel, and also, from among the broadcast signal of the first channel and the broadcast signal of the second channel. A channel for performing time shift based storage is selected in the memory unit 540. The A / V decoder 550 decodes the A / V stream of the channel selected by the first switching unit 530 so that the A / V decoder 530 can decode and display the main screen processor 551 for processing the video signals of the main picture and the sub picture. ) And a sub-screen processing unit 552.

Although the illustration is omitted in FIG. 5, device operations for selecting a multi-channel and selecting a channel for processing the main screen, sub-screen, recording and playback, etc. use a user interface based on a keypad, for example.

The second switching unit 560 stores the main screen or sub-screen processed A / V signal in the memory unit 540, and the broadcast signal of the channel stored in the memory unit 560 is displayed in the main screen display unit 572 or the sub-screen. A switching operation for displaying on the screen display unit 573 is performed.

When not using the PIP function, that is, when viewing without the sub picture, the broadcast signal of the first channel (or the second channel) is processed as the main picture. That is, when watching a broadcast without a sub-screen, the first channel processor 521 of the TS demultiplexer 520 receives only one channel information from the first receiver 511 of the CDM unit 510 through Walsh code setting. ) Is decoded by the main screen processing unit 551 of the A / V decoder 550 through the switching unit 530 and displayed on the entire display unit 572 without the subscreen 573.

When the broadcast signal of the first channel is processed as the main picture and the broadcast signal of the second channel is processed as the sub picture, the A / V stream of the first channel is decoded by the main picture processor 551 and the decoded audio signal. Is output through the audio output unit 571 of the output unit 570, and the decoded video signal is displayed as a main screen on the display unit 572 of the output unit 570. Meanwhile, the A / V stream of the second channel is decoded by the sub picture processor 552, and the decoded video signal is displayed on the sub picture 573 of the output unit 570. One of the audio signals of the main screen and the sub-screen may be output to the audio output unit 571 according to the user's selection.

According to a user's selection, the first switching unit 530 transfers the A / V stream of the first channel to the sub-screen processing unit 552 to process the first channel as a sub-screen, and to process the A / V stream of the second channel. The second channel may be processed as the main screen by transferring to the main screen processor 551.

On the other hand, when processing the main screen and the sub-screen as described above, according to the user's selection, the first switching unit 530 delivers the broadcast channel corresponding to the main screen or sub-screen to the memory unit 540 main screen based on the time shift Alternatively, the broadcast signal of the sub picture channel may be stored in real time. The broadcast signal of the stored channel is reproduced according to the user's selection if necessary and displayed on the main screen or sub-screen.

For example, the broadcast signal of the first channel is stored in the memory unit 540 based on the time shift, and the main screen processor 551 displays the broadcast signal of the first channel on the main screen display unit 572. In addition, the sub-screen processing unit 552 performs sub-screen processing on the broadcast signal of the second channel and displays it on the sub-screen display unit 573. Then, the broadcast signal of the first channel stored in the memory unit 540 is reproduced and processed by the main screen processor 551 to be displayed on the main screen display unit 572, and the real-time broadcast data of the first channel is displayed on the sub-screen processor. Processing is performed at 552 and displayed on the sub-screen display unit 573.

In this way, when the time shift function is activated, a real-time screen of the channel being watched can be shown in PIP. That is, the previously stored broadcast signal is reproduced and displayed on the main screen, and the current real-time broadcast signal of the same channel is displayed on the sub-screen so that the previously stored broadcast signal and the signal currently being broadcast in real time are simultaneously displayed on one screen. It becomes viewable.

Alternatively, the existing broadcast signal (the first channel in this example) can be reproduced and displayed on the main screen, and the broadcast signal of another channel (in this example, the second channel) at the same time can be displayed on the sub screen. Do. In addition, a broadcast signal of a previously stored channel may be processed as a sub picture, and a real time broadcast signal of the same channel (or another channel) may be displayed as a main picture. On the other hand, in the case of performing the PIP process when the time shift function is operated, the first channel and the second channel maintain the same Walsh code setting.

Meanwhile, when processing the main screen and the sub-screen as described above, the second switching unit 560 delivers the broadcast channel corresponding to the main screen or sub-screen to the memory unit 540 according to the user's selection while watching the broadcast in real time. You can record other channels. The broadcast signal of the stored channel is reproduced according to the user's selection if necessary and displayed on the main screen or sub-screen.

According to the selection of the second switching unit 560, the broadcast signal of the channel stored in the memory unit 540 is output to the main screen and the broadcast signal of the same channel is output to the sub-screen, or the channel of the channel stored in the memory unit 540 is broadcast. The signal is output to the sub-screen and the broadcast signal of the same channel is output to the main screen, or the broadcast signal of the channel different from the broadcast signal of the channel stored in the memory unit 540 is selected and outputted to the main screen or sub-screen.

This allows you to record a background channel while watching live broadcasts, and also allows you to quickly change channels to the channel you are watching with PIP. That is, since the first reception unit 511 and the second reception unit 512 have received the two broadcast channels in advance, the user can quickly change to the desired channel.

According to the present invention, a digital mobile broadcast receiver (terminal) can receive multi-channel reception, and in particular, by applying a PIP function and a background recording / recording function, the sub-channel screen can be simultaneously viewed while watching the broadcast in real time.

In addition, according to the present invention, it is possible to simultaneously record / record broadcasts of adjacent channels or preferred channels in addition to the channel being watched, and even while driving a time shift function that shows a screen later than the current time in real time, the same channel or another channel. Enables simultaneous viewing of broadcasts in real time.

Therefore, according to the digital mobile broadcast receiver and the reception processing method of the present invention, the user can freely use the PIP function or the background recording / recording function for convenience, and the user can select the broadcasting channel of the user's desired channel through the quick channel change. It can be done conveniently.

Claims (15)

A receiver for simultaneously receiving a plurality of digital broadcast channels; A data processor for processing audio and video data for each of the plurality of digital broadcast channels; A decoder for decoding the processed plurality of digital broadcast channels to display on one screen; An output unit for outputting the decoded audio and video data; Mobile broadcast receiver comprising a. The mobile broadcast receiver of claim 1, wherein one of the plurality of digital broadcast channels is processed and displayed as a main screen, and the other is processed and displayed as a sub-screen. A receiver for simultaneously receiving a digital broadcast signal of a first channel and a digital broadcast signal of a second channel; A data processor for processing audio and video data for each of the received broadcast signal of the first channel and the broadcast signal of the second channel; A storage unit for storing audio and video data of the first channel or the second channel processed by the data processor; A switching unit for selectively transmitting audio and video data of the first channel or the second channel processed by the data processor and audio and video data stored in the storage unit to a decoder; A decoder for decoding each of the broadcast signals of the selected channel in order to display one as a main picture and the other as a sub picture; An output unit for outputting the decoded audio and video data; Mobile broadcast receiver comprising a. 4. The mobile broadcast receiver of claim 3, wherein the digital broadcast signal is based on code division multiplexing (CDM) based digital satellite broadcasting or digital terrestrial broadcasting. A receiver for simultaneously receiving a digital broadcast signal of a first channel and a digital broadcast signal of a second channel; A data processor for processing audio and video data for each of the received broadcast signal of the first channel and the broadcast signal of the second channel; A decoder for decoding each of the broadcast signals of the first channel or the second channel processed by the data processor to display one of the main screen and the other of the broadcast signal; A storage unit for storing audio and video data of the first channel or the second channel processed by the decoder; A switching unit for selectively transmitting audio and video data of the first channel or the second channel processed by the decoder and audio and video data stored in the storage unit to an output unit; An output unit for outputting the selected audio and video data; Mobile broadcast receiver comprising a. The mobile broadcast receiver according to claim 5, wherein the digital broadcast signal is based on code division multiplexing (CDM) based digital satellite broadcasting or digital terrestrial broadcasting. Simultaneously receiving and decoding a plurality of digital broadcast channels; Storing audio and video data for any one of the plurality of digital broadcast channels in a memory unit; According to a user's selection, a video signal for each of the decoded digital broadcast channels is simultaneously displayed by dividing the area on one screen, or one of the decoded digital broadcast channels and the stored video data are simultaneously displayed. Dividing the area on one screen and simultaneously displaying the area; Mobile broadcast reception data processing method comprising a. 8. The method of claim 7, wherein the digital broadcast signal is based on code division multiplexing (CDM) based digital satellite broadcasting or digital terrestrial broadcasting. 8. The method of claim 7, wherein the storing of the audio and video data is audio and video data before decoding or storing the audio and video data after decoding. The mobile broadcast reception data processing method according to claim 7, wherein, in the displaying step, a real-time broadcast signal of the same channel as the broadcast channel reproduced from the memory unit is selected and simultaneously displayed on either of the main screen and the sub-screen, respectively. 8. The method of claim 7, wherein in the displaying step, a real-time broadcast signal of a broadcast channel reproduced from a memory and another channel is selected and simultaneously displayed as either a main screen or a sub-screen, respectively. Simultaneously receiving and decoding a plurality of digital broadcast channels; Displaying a video signal for each of the decoded digital broadcast channels according to a user's selection and simultaneously displaying the regions on one screen; Mobile broadcast reception data processing method comprising a. The mobile broadcast reception according to claim 12, wherein, as the plurality of digital broadcast channels, a broadcast signal of a first channel is processed and displayed as a main screen, and a broadcast signal of a second channel is processed and displayed as a sub-screen. Data processing method. The method of claim 12, wherein the digital broadcast signal is based on code division multiplexing (CDM) based digital satellite broadcasting or digital terrestrial broadcasting. The method of claim 12, wherein the broadcast signals of the respective channels displayed by dividing the areas on the one screen are switched by each other by the user.

Images