CN101026702A - Digital broadcast receiver and display method for simultaneous display of multi-channel visual images - Google Patents

Abstract

The present invention discloses a digital broadcast receiver and broadcast data display method enabling simultaneous display of multi-channel visual images. The broadcast data display method includes receiving digital broadcast data on a plurality of channels; simultaneously outputting on a single screen real-time broadcast data of a selected channel and still images of the remaining channels; and periodically updating the still images of the remaining channels. Thereby, up-to-date multi-channel visual images are simultaneously output. Hence, the user can easily perform channel selection and channel switching.

Description

The digit broadcasting receiver and the display packing thereof that show multi-channel visual images simultaneously

Technical field

A kind of digit broadcasting receiver of relate generally to of the present invention relates to such digit broadcasting receiver and broadcast data display method on concrete: wherein show multi-channel visual images simultaneously, to support to be easy to channel selection and switching.

Background technology

In DMB (DMB), comprise that the user is digitally modulated and be provided to the various multi-media signals of Voice ﹠ Video.On concrete, the user in the motion can receive various multimedia programmings by portable individual receiver or the vehicle-mounted receiver that has been equipped with unidirectional reception antenna.

Can store a large amount of digital multimedia datas---such as motion picture and music video---memory on progress and the popularizing of mobile communication terminal, supported the immediate development and the commercialization of the mobile communication terminal such as the DMB phone with DMB receiving ability.When at the volley, the user can watch and listen to the DMB program by the DMB phone.

When the user expectation that receives DMB obtains about except when the information on the channel outside the preceding receiving channels or when wishing that current receiving channels switched to different channels, the user must be scanned the channel that all can obtain in regular turn.In addition, because be provided as comprising channel designation or the text based information of the program log that is associated about the information of broadcast program or channel, therefore, the user may be difficult to understand intuitively the performance guide information of specific channel.

In order to address the above problem, to have developed a kind of broadcast message in the recent period method is provided based on image.In this method based on image, visual image is allocated in advance the corresponding program on independent channel, perhaps, extract visual image (on demand) video broadcasting from independent channel as requested, provide programme information about specific channel to use the visual image prepared.

But in so traditional method based on image, the still image that is used for each program on the channel provides programme information.Therefore, can not provide the programme information that changed along with the past of time.Because can not obtain the latest image information about the broadcast program of independent channel, the user can not use latest image information to select the channel of expecting.

Summary of the invention

Consider the problems referred to above and made the present invention, an object of the present invention is to provide a kind of digit broadcasting receiver and broadcast data display method, it can show up-to-date multi-channel visual images simultaneously, and convenient user's channel selection.

Another object of the present invention provides a kind of digit broadcasting receiver and broadcast reception display packing, it can be in the corresponding viewing area of single screen shows the thumbnail of the digital broadcasting that is used to represent each channel simultaneously, and convenient channel selection and switching.

Another object of the present invention provides a kind of digit broadcasting receiver and broadcast reception display packing, and it can show the real-time broadcasting of main channel (major channel) and the up-to-date information image of other residue channels simultaneously.

Another object of the present invention provides a kind of digit broadcasting receiver and broadcast data display method, wherein, be provided for the main channel viewing area and a plurality of secondary channel viewing area that is used for up-to-date visual image of broadcasting in real time simultaneously, and the selection of one of main channel viewing area and secondary channel viewing area causes main/secondary channel to switch.

According to the present invention, a kind of digit broadcasting receiver is provided, comprise broadcast reception unit, broadcasting output unit and rest image renovator.Described broadcast reception unit is used for while receiving digital broadcast data on a plurality of channels; Described broadcasting output unit is used for exporting simultaneously the real-time broadcast data of a specific channel and the rest image of residue channel on single screen; The rest image renovator is used for the rest image of regular update residue channel.

Described digit broadcasting receiver can comprise also that channel is provided with the unit, and being used to be provided with will be by the channel of described broadcast reception unit reception.

Preferably, described channel is provided with the unit and resets current secondary channel (minor channel) according to the channel switching condition that sets in advance.More preferably, described channel is provided with the channel list that the unit storage has a plurality of channel identifiers, be chosen in one of channel identifier in the described channel list in regular turn according to described channel switching condition, and current secondary channel reset to the channel of selected channel identifier.

Channel list can have the channel identifier of the quantity of the predetermined number that is greater than or equal to the secondary channel that will show simultaneously.Preferably, select described channel identifier by the user, perhaps described channel identifier is the identifier that receives the favorite channels of historical collection automatically from channel.

Preferably, described channel switching condition is to change one of detection of cycle and the I frame on current secondary channel by the channel change request of user's input, default channel.

Preferably, described channel is provided with cell response and changes request in the channel from the user, the channel that the Channel Identifier setting that use is followed by described channel change request will receive.

Described rest image renovator can comprise the I frame detector, is used on the basis in I frame period, repeatedly detects the I frame in the broadcast data of current secondary channel; And the I frame memory, be used to store the I frame that is detected of described secondary channel, and use the new I frame that detects to upgrade the I frame of being stored of current secondary channel.

Preferably, described I frame detector is stored the I frame period of secondary channel in advance, and will be in its each I frame period, and the picture frame that receives on current secondary channel detects and is the I frame.Perhaps, the size of the picture frame that the comparison of described I frame detector is received, and the detection of picture frame that will be bigger is the I frame.

Preferably, described I frame memory storage and renewal are corresponding to the I frame of current secondary channel.

Described broadcasting output unit can comprise: the main channel buffer is used to store the real-time broadcast data of main channel; Image synthesizer is used for using real-time broadcast data of storing at described main channel buffer and the I frame of storing in the I frame memory to produce the screen output image.

Preferably, described image synthesizer selects to equal the number of I frame of the predetermined number of the secondary channel that will show simultaneously in regular turn from described I frame memory, and with the vision signal combination of selected I frame and main channel to produce the screen output image.

Described broadcast reception unit can comprise: demultiplexer is used for separating each digital broadcast signal from the digital broadcast data that receives simultaneously on two or more channels; And first switch is used to switch in main channel and secondary channel data transmission path on the output of described demultiplexer.

Preferably, described channel is provided with the unit according to coming to described first switch output control signal, to switch main channel and secondary channel data transmission path from user's master/secondary channel switch request or the master/secondary channel switching condition that sets in advance.

Preferably, described master/secondary channel switching condition is master/secondary channel switching cycle or master/secondary channel switching time.

Described broadcasting output unit can comprise: the main channel buffer is used to store the real-time broadcast data of main channel; Secondary channel buffer is used to store the real-time broadcast data of described secondary channel; Image synthesizer is used for using real-time broadcast data of storing in described main channel buffer or secondary channel buffer and the I frame of storing in the I frame memory to produce the screen output image; And second switch is used for the output of the output of main channel buffer or secondary channel buffer is connected to the input of described frame buffer.

Described rest image renovator can also comprise: the 3rd switch is used for the broadcast data of the broadcast data of main channel or secondary channel is directed to the input of I frame detector.

Preferably, described channel is provided with the unit according to coming to described second switch and the 3rd switch output control signal, to switch main channel and secondary channel data transmission path from user's master/secondary channel switch request or the master/secondary channel switching condition that sets in advance.

Preferably, described second switch is in response to the control signal that the unit is set from described channel, at described the 3rd switch the broadcast data of main channel is directed under the situation of input of described I frame detector, the output of described secondary channel buffer is connected to the input of described image synthesizer, and at described the 3rd switch the broadcast data of secondary channel is directed under the situation of input of I frame detector, the output of described main channel buffer is connected to the input of image synthesizer.

Preferably, described the 3rd switching response is in the control signal that the unit is set from described channel, at described second switch the output of described main channel buffer is connected under the situation of input of described image synthesizer, guide the broadcast data of described secondary channel to the input of described I frame detector, and at described second switch the output of secondary channel buffer is connected under the situation of input of described image synthesizer, guides the broadcast data of described main channel to the input of described I frame detector.

Preferably, described broadcasting output unit is exported real-time broadcast data and rest image to the corresponding viewing area in single screen.

Described digit broadcasting receiver can also comprise input unit, is used to receive user's input to select one of viewing area.Preferably, described broadcasting output unit is in response to the selection of the viewing area of user by input unit, carry out main channel and with secondary channel that selected viewing area is associated between switching or the amplification of selected viewing area.

Preferably, if the viewing area that selection is associated with main channel, then described broadcasting output unit uses the amplification message that prestores to amplify selected viewing area.

Preferably, if the viewing area that selection is associated with secondary channel, then described broadcasting output unit is carried out the switching between main channel and secondary channel.

According to an alternative embodiment of the invention, the broadcast data display method that is used for a kind of digit broadcasting receiver is provided, comprising: receiving digital broadcast data on a plurality of channels; And, on single screen, export the real-time broadcast data of a selected channel and the rest image of residue channel simultaneously.

The described step of exporting simultaneously can comprise: with described single screen divider is the viewing area, and exports described real-time broadcast data and rest image to their corresponding display; Receive user's input to select one of described viewing area; And, carry out the amplification of main/secondary channel switching or selected viewing area according to channel viewing area relevance.

Preferably, the rest image of regular update residue channel.

Preferably, according to the position and the size of their corresponding display, described real-time broadcast data and rest image are adjusted size.

According to an alternative embodiment of the invention, a kind of broadcast data display method that is used for digit broadcasting receiver is provided, comprising:, show the channel list of identifier with obtainable channel in response to broadcast reception request from the user; The broadcast data that on screen, shows the channel of from channel list, selecting by the user with full screen mode; In response to show at channel list or broadcast reception during the request watched of all channels, be viewing area with described screen divider corresponding to each obtainable channel of described list of frequency; The real-time broadcast data that on the corresponding viewing area of screen, shows selected channel; And, in their corresponding display, show the rest image that remains channel simultaneously or in regular turn.

Preferably, according to the position and the size of their corresponding display, described real-time broadcast data and rest image are adjusted size.Preferably, described rest image is the I frame that detects in the broadcast data of the residue channel except selected channel.

Described broadcast data display method also comprises: import the function of carrying out user's request in response to the user, comprise that with screen divider be the viewing area, and export real-time broadcast data and rest image to their corresponding display; Receive input to select one of described viewing area from the user; And, carry out the amplification of channel switching or selected viewing area according to channel viewing area relevance.

Preferably, if selected viewing area is associated with the selected channel that is used for real-time broadcast data, then use the amplification message that prestores to amplify selected viewing area.Preferably, if selected viewing area is associated with one of residue channel that is used for rest image, then carry out selected channel and with residue channel that selected viewing area is associated between switching.

Description of drawings

By describing in detail below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention, feature and advantage will be clearer, wherein:

Fig. 1 is the overview of DMB (DMB) system;

Fig. 2 is the block diagram according to DMB receiver of the present invention;

Fig. 3 is the block diagram according to the DMB receiver of an alternative embodiment of the invention;

Fig. 4 illustrates the I frame information table that is used for managing about in the information of the I frame of the secondary channel of the receiver of Fig. 2 or Fig. 3;

Fig. 5 is the flow chart of method of multi-channel visual images that is used for the receiver of displayed map 2 simultaneously or Fig. 3;

Fig. 6 is the block diagram according to the DMB receiver of an alternative embodiment of the invention;

Fig. 7 is the block diagram according to the DMB receiver of an alternative embodiment of the invention;

Fig. 8 is the flow chart of method of multi-channel visual images that is used for the receiver of displayed map 6 simultaneously or Fig. 7;

Fig. 9 illustrates the structure of the MPEG video data of being handled by Fig. 2,3,6 and 7 receiver;

Figure 10 A and 10B illustrate the display screen layout that is used to present by the multi-channel visual images of Fig. 2,3,6 and 7 receiver output;

Figure 11 is the flow chart of method that is used for showing simultaneously multi-channel visual images according to an alternative embodiment of the invention;

Figure 12 is the flow chart of method that is used for showing simultaneously multi-channel visual images according to an alternative embodiment of the invention;

Figure 13 is the state transition graph of diagram in response to the conversion on screen display mode of the customer incident in the method for Figure 12;

Figure 14 is the flow chart of the channel handoff procedure in the method for Figure 12;

Figure 15 illustrates the sequence in response to the screen layout of the multi-channel visual images of customer incident;

Figure 16 is the configuration that is used for the DMB receiver of diagram multi-channel visual images processing.

Figure 17 illustrates the sequence in response to the screen layout of the multi-channel visual images of customer incident; And

Figure 18 illustrates the sequence in response to the screen layout of the multi-channel visual images of customer incident.

Embodiment

Below, describe the preferred embodiments of the present invention in detail referring to accompanying drawing.In the accompanying drawings, identical drawing reference numeral is represented identical or corresponding elements.May be omitted in the detailed description of structure well known in the art or processing, to avoid obscuring the present invention with unnecessary details.

At first, summary DMB (DMB).Though the present invention is applied to DMB, it also can be applied to any digital broadcasting, such as digital video broadcasting (DVB) and MediaFLO.

The DMB business is based on the digital audio broadcasting that is used for digital radio (DAB) technology, and comprises the multimedia broadcasting notion, so that moving image and the information service such as weather, news and location-based service to be provided in addition.DMB service can be by moving or vehicle-mounted receiver provides the high quality audio and the video broadcasting data of CD (CD) or digital universal disc (DVD) class to user at the volley, and they as broadcasting service of future generation just in attracts attention.

That is, DMB is professional makes the user in moving can receive the various multimedia broadcast datas on a plurality of channels by the mobile or car-mounted terminal with unidirectional reception antenna.

Compare with existing broadcasting service, the feature of DMB business can be mobility.Is ground and satellite system by signal transfer mechanisms with the DMB system divides.The DMB system is compared with existing broadcast system, in table 1, summed up comparative result.

Table 1

	Mobility
				Fixing	Move
		Existing public broadcasting				Terrestrial DMB	Ground station
Existing satellite broadcasting			Satellite dmb	Artificial satellite
		Relatively			In to big receiver	Very little receiver

As shown in table 1, to compare with existing broadcasting service, the DMB business can be a feature with mobility and undersized receiver.Broadcasting service is provided by the ground station in the terrestrial DMB system, and is provided by the artificial satellite in the satellite dmb system.

In the satellite dmb system as new broadcast medium, to the satellite transmission program, satellite is retransmitted to described program the mobile DMB terminal in the vast overlay area of satellite then from the DMB broadcasting center.Owing to used satellite, can obtain the satellite dmb service in the outdoor environment on big zone.May need gap filler (gap filler) or repeater to receive the DMB signal and retransmit the DMB signal received, so that to providing service such as the user in the zone that is blocked of underground or room area.

In the terrestrial DMB system, send program by the frequency spectrum that is suitable for overland propagation.Unlike the satellite dmb system, on the ground, send broadcast singal by the base station, these base stations are similar to those that are used for portable terminal.The terrestrial DMB business is a multimedia service, and it will be combined by video, audio frequency and data broadcasting that surface wave is provided to the mobile subscriber.

Referring to Fig. 1, the DMB system comprises broadcasting center 10, one or more satellite 20, one or more base station 30 and a plurality of mobile, portable and fixing receiver, such as vehicle-mounted receiver 40, portable terminal 50 and family expenses receiver 60.

Broadcasting center 10 compressions and modulation are used to represent the DMB signal of audio frequency, video and data-signal, and the DMB signal that sends modulation to the satellite 20 or the base station 30 of correspondence.

The DMB signal that is received is amplified in 10 each satellite 20 or the base stations 30 that receive the DMB signal from the broadcasting center, and retransmits the DMB signal that is exaggerated with different frequency to receiver 40,50 and 60.

Each receiver 40,50 or 60 receives the DMB signals from the satellite 20 of correspondence or base stations 30, and the DMB signal that received of demodulation compression, to export unpressed audio frequency, audio frequency and data-signal.

Progressive rapidly digital broadcasting technology has made the user in rapid movement can receive muting digital broadcast program, and the new additional function of will having sought development obtains bigger user friendliness with service.

Digit broadcasting receiver of the present invention keeps a broadcasting channel (" main channel ") that digital broadcasting is provided continuously, and keeps at least one broadcasting channel (" secondary channel ") to provide digital broadcasting in an alternating manner according to channel predetermined switching condition.Described channel switching condition is one of detection of user's change request, default change cycle and the I frame on secondary channel preferably, and describes in the back.

Referring to Fig. 2, DMB receiver 100 comprises that DMB module 110, TS demultiplexer 120, main channel buffer 130, secondary processor channel 140, A/V coding decoder 150, image synthesizer 160, DMB output unit 170, channel are provided with unit 180 and input unit 190.

DMB module 110 receives the multichannel broadcast singal corresponding to the broadcasting channel of being selected by the user, and exports transport stream (TS) data of selected broadcasting channel.In satellite dmb, DMB module 110 is according to the receiving channels information that unit 180 is set from channel, the walsh code that setting is associated with main channel and secondary channel (walsh code is the code that is used for extracting from the broadcast data that sends by mpeg 2 transport stream the TS grouping of specific channel), use described walsh code to extract the TS data of main channel and secondary channel, and export the TS data of being extracted.Before the TS data that output is extracted, DMB module 110 is used the channel information that is associated, and the TS data of being extracted are deinterleaved.

TS demultiplexer 120 will be separated into main channel data and secondary channel data from the TS data multiplex of DMB module 110, detect the MPEG-4 formatted data from main channel data and secondary channel data, and respectively to main channel buffer 130 and secondary processor channel 140 output main channel MPEG-4 data and secondary channel MPEG-4 data.

130 storages of main channel buffer are from the broadcast data of the main channel of TS demultiplexer 120.For the audio-frequency unit and the viewable portion of store broadcast data independently, main channel buffer 130 preferably includes and is used for the audio buffer 131 of storing audio data in digitized format and is used for video buffer 133 with the digital store video data.

Secondary processor channel 140 detects the I frame from the secondary channel broadcasting Data Detection video data from TS demultiplexer 120 from the video data that is detected, and stores the I frame that is detected.Secondary processor channel 140 preferably includes and is used to detect the I frame detector 141 of I frame and is used to store the I frame that is detected and the I frame memory 143 of the secondary channel identifier that is associated.

Frame or I frame, predictive frame or P frame and the bidirectional frame or the B frame of coding in the mpeg compressed video data flow comprises.The I frame is the reference frame that is used for the MPEG compression and decompression, and repeats in the mpeg compressed video data flow by predetermined period (is 0.5 second for the satellite dmb system).In addition, the size of I frame is greater than the size of P frame or B frame.For example, the P frame sign is about 1/10 of an I frame sign.

I frame detector 141 detects the I frame in each I frame period in the secondary channel broadcasting data from TS demultiplexer 120.The secondary channel broadcasting data that are provided to secondary processor channel 140 can comprise video data and voice data.Therefore, I frame detector 141 is preferably in the secondary channel broadcasting data and detects video data, detects the I frame from the video data that is detected then.

Preferably, I frame detector 141 prestores the I frame period, and detecting with the picture frame that will receive in each I frame period is the I frame, perhaps the size of the picture frame that received is compared, and detecting with picture frame that will be bigger is the I frame.

143 storages of I frame memory are by I frame detector 141 I frame that detects and the secondary channel identifier that is associated.Upgrade the I frame of the current secondary channel of being stored in each I frame period.

This is because image synthesizer 160 uses the I frame of the secondary channel of being stored (particularly previous secondary channel), shows the I two field picture of secondary channel on single screen, and the I two field picture of described secondary channel replaces each other at predetermined channel switching cycle.I frame memory 143 preferably store be greater than or equal to will with the main channel number of I frame of the quantity of received default secondary channel simultaneously.In Fig. 4, illustrate the I frame of arranging with table format.Referring to Fig. 4, I frame information table 80 comprises channel identifier field 81 and I frame field 83, is used for storing the I frame according to their corresponding channel.

A/V coding decoder 150 is decoded from the digital audio-frequency data and the video data of main channel buffer 130, and the data of decoding are output as audio signal and vision signal.

Image synthesizer 160 will be by the main channel video data of A/V coding decoder 150 decoding and a plurality of secondary channel image combination from secondary processor channel 140.That is, with of the I frame combination of main channel video data with the secondary channel of storage in I frame memory 143.Preferably, the secondary channel of image synthesizer 160 storage predetermined numbers, and in regular turn from I frame memory 143 select to equal secondary channel predetermined number quantity be used for the synthetic I frame of image.

DMB output unit 170 comprises the loud speaker 171 and the display part 173 that is used to show from the vision signal of image synthesizer 160 that is used to export from the audio signal of A/V coding decoder 150.The output signal from image synthesizer 160 is preferably used in display part 173, shows main channel video data and secondary channel video data simultaneously on single screen.

Channel is provided with the main channel that unit 180 will receive according to the selection setting of user by input unit 190 and the identifier of secondary channel, and sends described channel identifier to DMB module 110.Preferably, channel is provided with prestore channel ID tabulation of unit 180, described channel ID tabulation has a plurality of secondary channel identifier of being selected by the user or a plurality of favorite channels identifiers of collecting automatically from channel reception history, channel is provided with unit 180 and according to the channel switching condition that sets in advance, select channel identifier from channel ID tabulation in regular turn, and send selected channel identifier to DMB module 110.Described channel ID tabulation preferably includes the channel identifier of the quantity of the predetermined number that is greater than or equal to the secondary channel that will output to single screen simultaneously.

The detection of the change request that described channel switching condition can be the user, default change cycle or the I frame on current secondary channel.If the change request that described channel switching condition is the user, then channel is provided with the channel that unit 180 preferably is set to current secondary channel the channel identifier of being followed by described change request.

If the channel switching condition is user's change request or default change cycle, then channel is provided with the current secondary channel of unit 180 maintenances, up to satisfying the channel switching condition, and secondary processor channel 140 is updated in the I frame of the current secondary channel of storage in the I frame memory 143 in each I frame period.

Therefore, DMB output unit 170 is provided by the broadcast data of the main channel that provides via main channel buffer 130, and the secondary channel I frame that uses storage in I frame memory 143 shows the secondary channel image of predetermined number, wherein, in each I frame period, the image of current secondary channel is updated, and is newly shown, is switched to another channel up to current secondary channel.

Switch for the secondary channel that detects by the I frame, I frame detector 141 preferably is provided with the detection that the I frame of specific secondary channel is notified in unit 180 to channel.Because the I frame comprises the benchmark image that is used for the MPEG compression and decompression, might set up the visual image of specific secondary channel.That is,, then use the I two field picture detected to upgrade the visual image of current secondary channel, and current secondary channel is switched to next secondary channel to carry out the video data reception if detect the I frame of current secondary channel.

Therefore, in the present invention, when exporting the broadcast data of main channel, can provide the visual image of the new renewal of a plurality of secondary channels.

The such channel ID of replacement use tabulates and is used for secondary channel switching, and channel is provided with unit 180 can directly be provided with or revise secondary channel identifier according to the information of being selected to provide by each user, and sends secondary channel identifier to DMB module 110.

When importing main channel change request by input unit 190, channel is provided with unit 180 and changes the main channel identifier according to the information of being followed by described change request.That is, channel is provided with unit 180 main channel that will be received by DMB module 110 and the identifier of secondary channel is set, and control DMB module 110 is fixedly replacing a plurality of secondary channels in the main channel.

Referring to Fig. 3, DMB receiver 200 comprises that DMB module 210, TS demultiplexer 220, main channel buffer 230, secondary processor channel 240, A/V coding decoder 250, image synthesizer 260, DMB output unit 270, channel are provided with unit 280 and input unit 290.Compare with the DMB receiver 100 of Fig. 2, if there is the channel that can obtain, then DMB receiver 200 can receive the broadcast data of two secondary channels simultaneously.

Each element of DMB receiver 200 is similar to the counter element of the DMB receiver 100 of Fig. 2 on function.That is the DMB module 210 of the DMB receiver 200 shown in Fig. 3,, TS demultiplexer 220, main channel buffer 230, secondary processor channel 240, A/V coding decoder 250, image synthesizer 260, DMB output unit 270, channel is provided with unit 280 and input unit 290 are similar to the DMB receiver 100 shown in Fig. 2 respectively on function DMB module 110, TS demultiplexer 120, main channel buffer 130, secondary processor channel 140, A/V coding decoder 150, image synthesizer 160, DMB output unit 170, channel is provided with unit 180, input unit 190.

But under the situation that the quantity of the secondary channel that will receive increases, to handle those of the operation of the element in Fig. 3 that is associated and counter element in Fig. 2 different with secondary channel.

Channel is provided with unit 280 a main channel identifier and two secondary channel identifiers is set, and sends three channel identifiers to DMB module 210.In satellite dmb, DMB module 210 is provided with three walsh codes according to main channel and secondary channel identifier, and uses described walsh code to extract TS data corresponding to a main channel and two secondary channels, and the TS data extracted of output.TS demultiplexer 220 from the Data Detection MPEG-4 data of being separated, and is exported the MPEG-4 data that detected from TS data separating main channel data, the first secondary channel data and the second secondary channel data from 210 outputs of DMB module.

In order to handle the video broadcasting on a plurality of secondary channels simultaneously, secondary processor channel 240 comprises the I frame detector that is used for each secondary channel.Secondary processor channel 240 comprise the I frame that is used to detect the first secondary channel an I frame detector 241, be used to detect the second secondary channel the I frame the 2nd I frame detector 242 and be used to store I frame memory 243 from the I frames of the first and second I frame detectors 241 and 242 outputs.

As mentioned above, under the situation that the quantity of secondary channel improves, it is different that the DMB module 210 in Fig. 3, TS demultiplexer 220, secondary processor channel 240 and channel are provided with those of the operation of unit 280 and counter element in Fig. 2.Except list above those the element in Fig. 3 be similar in operation to counter element in Fig. 2, omit its repeat specification.

Fig. 2 is the block diagram with DMB receiver of a secondary channel that receives simultaneously with main channel, and Fig. 3 is the block diagram with DMB receiver of two secondary channels.But, the invention is not restricted to have the DMB receiver of a secondary channel or two secondary channels.The present invention relates to show simultaneously the DMB receiver of the visual image of a main channel and a plurality of secondary channels, wherein, the channel switching condition is selected each secondary channel in regular turn as described above, and use the new image that receives to upgrade the shown image of selected secondary channel continuously, by the restricted number of the secondary channel that can receive simultaneously with main channel, the quantity of secondary channel can not improve with the performance improvement of DMB module in the present invention.

Referring to Fig. 5, described method is described as follows.

The DMB receiver is provided for a plurality of channel identifiers that DMB receives in step S105.In this step, the DMB receiver is provided with a main channel identifier and a plurality of secondary channel identifier.Preferably, the prestore channel ID tabulation of DMB receiver, described channel ID tabulation has a plurality of secondary channel identifier of being selected by the user or a plurality of favorite channels identifiers of collecting automatically from channel reception history, and the DMB receiver selects channel identifier from channel ID tabulation in regular turn according to channel predetermined switching condition, current secondary channel is set to the channel of selected channel identifier.In conjunction with Fig. 2 the channel switching condition has been described above.

When in step S115, starting the DMB reception, the DMB receiver receives broadcast data on a plurality of channels of the channel identifier that step S105 is provided with, and at step S120, extract main channel data and secondary channel data respectively from the broadcast data that is received, because main channel data in the broadcast data that receives and secondary channel data are intertexture forms in step S115.This divides other to extract class of operation to be similar to operation in conjunction with the described TS demultiplexer 120 of Fig. 2.

After the main channel data in step S120 and the extraction respectively of secondary channel data, the DMB receiver is in step S125 storage main channel data.At step S130, detect the I frame of current secondary channel from secondary channel data, and, store the I frame that is detected according to its corresponding channel at step S135.Be used for step S130 that secondary channel handles and S135 and be similar to operation in conjunction with the described secondary processor channel 140 of Fig. 2.

After storage main channel data and the detection of I frame, the DMB receiver at step S140 with the number of I two field picture combination of the video section of main channel with the predetermined number that equals secondary channel, and the master/secondary channel visual image that is made up in step S145 output and the voice data of main channel.

When in DMB receives, the reception of main channel if promptly in step S150, be not standing, if in step S155, satisfy the channel switching condition, then the DMB receiver switches to another secondary channel at step S160 with current secondary channel, and repeating step S115 receives to carry out continuous DMB to S155.

The condition of switching channels is user's change request, default change cycle and the detection of the I frame on current secondary channel preferably.Being combined in channel among Fig. 2 is provided with unit 180 and has described and be used in the condition of step S160 switching channels to switch between secondary channel.

By aforesaid step, Fig. 2 or 3 DMB receiver show up-to-date multi-channel visual images simultaneously.Particularly, at the reception period of main channel, show the up-to-date visual image of a plurality of secondary channels, thus convenient user's channel selection.

Fig. 6 illustrates the configuration according to the DMB receiver of an alternative embodiment of the invention.

Referring to Fig. 6, DMB receiver 300 comprises that DMB module 310, TS demultiplexer 320, main channel buffer 330, secondary processor channel 340, A/V coding decoder 350, image synthesizer 360, DMB output unit 370, channel are provided with unit 380, input unit 390 and first switch SW 1.Compare with the DMB receiver 100 of Fig. 2, DMB receiver 300 is carried out the switching between main channel and secondary channel in response to master/secondary channel switch request, and comprise first switch SW 1, be used to carry out the switching between main channel and secondary channel data transmission path.

The element of DMB receiver 300 is similar to the counter element of the DMB receiver 100 of Fig. 2 on function.That is the DMB module 310 of the DMB receiver 300 shown in Fig. 6,, TS demultiplexer 320, main channel buffer 330, secondary processor channel 340, A/V coding decoder 350, image synthesizer 360, DMB output unit 370, channel is provided with unit 380, input unit 390 is similar to the DMB module 110 at the DMB receiver 100 shown in Fig. 2 respectively on function, TS demultiplexer 120, main channel buffer 130, secondary processor channel 140, A/V coding decoder 150, image synthesizer 160, DMB output unit 170, channel is provided with unit 180, with input unit 190.

The element in Fig. 6 except channel is provided with unit 380 is similar in operation to the counter element in Fig. 2, omits the explanation of its repetition.Be provided with at channel under the situation of unit 380, it transmits control signal to first switch SW 1, is used for switching between main channel and secondary channel data transmission path.

Channel is provided with unit 380 and comes to first switch SW, 1 output control signal with the switch data transmission path by the selection of input unit 390 or the master who sets in advance/secondary channel switching condition according to the user.Master/secondary channel switching condition is master/secondary channel switching cycle or master/secondary channel switching time preferably.If switching the condition of master/secondary channel is master/secondary channel switching cycle, then channel is provided with unit 380 and repeatedly exports control signal at regular intervals, to switch between main channel and secondary channel.If be used to switch the condition of master/secondary channel and be main/secondary channel switching time, then channel is provided with unit 380 and at the appointed time exports control signal, to switch between main channel and secondary channel.

In response to the control signal that unit 380 is set from channel, first switch SW 1 changes current transmission path.For example, before receiving control signal, suppose the first contact SWp1 and the 3rd contact SWp3 interconnection, to form the main channel data transfer path by first switch SW 1, and the second contact SWp2 and the 4th contact SWp4 interconnection are to form secondary channel data transmission path.After receiving control signal, first switch SW 1 forms the main channel data transfer path by the interconnect first contact SWp1 and the 4th contact SWp4, and also forms secondary channel data transmission path by the interconnect second contact SWp2 and the 3rd contact SWp3.

The result, before receiving control signal, the broadcast data by the first contact SWp1 and the 3rd contact SWp3 is treated to the main channel data, and after receiving control signal, described broadcast data is conducted through the first contact SWp1 and the 4th contact SWp4, and is treated to secondary channel data; Before receiving control signal, broadcast data by the second contact SWp2 and the 4th contact SWp4 is treated to secondary channel data, and after receiving control signal, broadcast data is conducted through the second contact SWp2 and the 3rd contact SWp3, and is treated to the main channel data.

Therefore, the DMB receiver 300 of Fig. 6 can be carried out the switching between main channel and secondary channel data transmission path in response to from channel the control signal of unit 380 being set.

Referring to Fig. 7, DMB receiver 400 comprises that DMB module 410, TS demultiplexer 420, main channel buffer 430, secondary processor channel 440, A/V coding decoder 450, image synthesizer 460, DMB output unit 470, channel are provided with unit 480, input unit 490, second switch SW2, the 3rd switch SW 2 and the 4th switch SW 2.Compare with the DMB receiver 100 of Fig. 2, DMB receiver 400 is carried out the switching between main channel and secondary channel in response to master/secondary channel switch request, store secondary channel data to minimize master/secondary channel switching time, and be included in the secondary channel buffer 445 in the secondary processor channel 440 and be used to change second to the 4th switch SW 2-SW4 of transmission path.

The element in Fig. 7 except those (secondary processor channel 440, channel are provided with the unit 480 and second to the 4th switch SW 2-SW4) that the storage with the change of transmission path and secondary channel data is associated is in the counter element that is similar on the function in Fig. 2.That is, the DMB module 410 of the DMB receiver 400 shown in Fig. 7, TS demultiplexer 420, main channel buffer 430, A/V coding decoder 450, image synthesizer 460, DMB output unit 470, channel are provided with DMB module 110, TS demultiplexer 120, main channel buffer 130, A/V coding decoder 150, image synthesizer 160, DMB output unit 170, the channel that unit 480 and input unit 490 be similar at the DMB receiver 100 shown in Fig. 2 unit 180 and input unit 190 are set on function.

With channel in Fig. 2 unit 180 is set and compares, channel is provided with unit 480 in addition to second to the 4th switch SW 2-SW4 output control signal, to change main channel and secondary channel data transmission path.

Channel is provided with unit 480 and exports control signal CH.sig to second, third and the 4th switch SW 2, SW3 and SW4, to switch its transmission path according to the user by the selection of input unit 490 or the master who sets in advance/secondary channel switching condition.

In response to described control signal CH.sig, second, third is connected (toggle) to new transmission path with the 4th switch SW 2, SW3 with SW4.In Fig. 7, constitute the initial transmission path with the path shown in solid line is in switch, and constitute the transmission path that will form in response to master/secondary channel switch request with the path shown in dotted line is in switch.

In the DMB of Fig. 7 receiver 400, carry out the transmission path switching at the input of I frame detector 441 with at the output of main channel buffer 430 and secondary channel buffer 445.

Second switch SW2 sets up initial the connection between the input of the input of I frame detector 441 and secondary channel buffer 445.When channel is provided with unit 480 and exports control signal in response to master/secondary channel switch request, second switch SW2 removes the connection between the input of the input of I frame detector 441 and secondary channel buffer 445, connects between the input of the input of I frame detector 441 and main channel buffer 430 then.That is the broadcast data of, leading/be provided to before the secondary channel switch request main channel buffer 430 is directed into I frame detector 441 now and detects to be used for the I frame.

Simultaneously, the 3rd switch SW 3 is removed initial connection that is respectively applied for Voice ﹠ Video output with the 4th switch SW 4 from main channel buffer 430, and sets up the new connection that is respectively applied for Voice ﹠ Video output from secondary channel buffer 445.That is, the 3rd switch SW 3 disconnects the initial transmission path from the audio buffer 432 of main channel buffer 430 to loud speaker 471, sets up new connection then to form the transmission path from the audio buffer 447 of secondary channel buffer 445 to loud speaker 471.The 4th switch SW 4 disconnects from the initial transmission path of video buffer 433 to the A/V coding decoders 450 of main channel buffer 430, set up new connection then, to form from the transmission path of video buffer 449 to the A/V coding decoders 450 of secondary channel buffer 445.

As mentioned above, the DMB receiver of Fig. 7 also cushions secondary channel broadcasting data except buffering main channel broadcast data, and in response to master/secondary channel switch request, switch the output of the secondary channel broadcasting data that are cushioned and the input of arriving the I frame detector, minimize thus owing to main/secondary channel switches the time delay that causes.

Fig. 8 is the flow chart of method of multi-channel visual images that is used for the DMB receiver of displayed map 6 simultaneously or Fig. 7.On concrete, the flowchart illustrations of Fig. 8 carry out the method for the switching between main channel and secondary channel during being used in multi-channel visual images, showing.Referring to Fig. 8, described method is described as follows.

The DMB receiver is provided for a plurality of channel identifiers that DMB receives in step S205.In this step, the DMB receiver is provided with a main channel identifier and a plurality of secondary channel identifier.Preferably, the prestore channel ID tabulation of DMB receiver, described channel ID tabulation has the identifier of a plurality of secondary channels of being selected by the user or receives historical a plurality of favorite channels identifiers of collecting automatically from channel, and the DMB receiver selects channel identifier from channel ID tabulation in regular turn according to channel predetermined switching condition, current secondary channel is set to the channel of selected channel identifier.In conjunction with Fig. 2 the condition that is used for switching channels has been described above.

The DMB receiver receives broadcast data on a plurality of channels that the channel identifier with step S205 and step S215 setting is associated, and receiver extracts main channel data and secondary channel data at step S220 respectively from the broadcast data that is received, because main channel data in the broadcast data that receives in step S215 and secondary channel data are intertexture forms.This divides other to extract class of operation to be similar to operation in conjunction with the described TS demultiplexer 120 of Fig. 2.

After step S220 extracted main channel data and secondary channel data respectively, the DMB receiver was stored described main channel data and secondary channel data respectively at step S225 in main channel buffer and secondary channel buffer.

At step S230, detect the I frame of current secondary channel from secondary channel data, and, store the I frame that is detected according to the secondary channel of its correspondence at step S235.Be used for step S230 that secondary channel handles and S235 and be similar to operation in conjunction with the described secondary processor channel 140 of Fig. 2.

After the I frame from secondary channel data detects, at step S240, the DMB receiver is the number of I two field picture combination with the predetermined number that equals secondary channel of the video section of main channel data, and at the master/secondary channel visual image of step S245 output combination and the voice data of described main channel.

When in DMB receives, the reception of main channel if promptly in step S250, be not standing, if input master/secondary channel switch request or satisfied default master/secondary channel switching condition in step S255, then at step S260, the DMB receiver is carried out the switching between main channel and the secondary channel data transmission path.That is, the DMB receiver of Fig. 6 is operated first switch SW 1, as described in Figure 6, and the DMB receiver of Fig. 7 operation second to the 4th switch SW 2-SW4, as described in Figure 7.

When receiving at DMB, being during main channel receives the time, if satisfy the condition that is used for switching channels at step S265, then at step S270, the DMB receiver switches to another secondary channel with current secondary channel, and repeating step S215-S265 is to continue the DMB reception.

The condition that is used for switching channels is user's one of change request, default change cycle and the detection of the I frame on current secondary channel preferably.Be combined in channel among Fig. 2 and unit 280 be set and described the condition of switching channels and leading/the step S270 that switches between the secondary channel.

By aforesaid step, Fig. 6 or 7 DMB receiver can show up-to-date multi-channel visual images simultaneously, and carry out the main channel selected when the request and the switching between the secondary channel in response to master/secondary channel switch request.On concrete, the DMB receiver of Fig. 7 can minimize owing to main/secondary channel switches the time delay that causes.

Fig. 9 illustrates the structure of the MPEG video data of being handled by Fig. 2,3,6 or 7 receiver.That is, Fig. 9 shows the example of formation by the video flowing of the receivable MPEG video broadcasting of DMB receiver: the video flowing (F) of the video flowing (D) of the video flowing (B) of the video flowing of main channel (A), secondary channel 1, the video flowing (C) of secondary channel 2, secondary channel 3, the video flowing (E) of secondary channel 4, secondary channel 5, the video flowing (G) of secondary channel 6, the video flowing (H) of secondary channel 7 and the video flowing (J) of secondary channel 8.

As mentioned above, DMB receiver of the present invention receiver, video stream on a plurality of channels.Under the situation of secondary channel, once select one of described secondary channel, and only detect I frame the broadcast data from the secondary channel of current selection as the reference map picture frame, and with its storage.Referring to Fig. 9, if be used for the detection that the condition of switching channels is the I frame on current secondary channel, then the DMB receiver receives the video flowing such as (A) continuously on main channel.Continuous reception period detects behind the I frame on " secondary channel 1 " at time t1 on described main channel, and current secondary channel is switched to " secondary channel 2 " from " secondary channel 1 "; Detect behind the I frame on " secondary channel 2 " at time t2, current secondary channel is switched to " secondary channel 3 " from " secondary channel 2 "; Detect behind the I frame on " secondary channel 3 " at time t3, current secondary channel is switched to " secondary channel 4 " from " secondary channel 3 "; Detect behind the I frame on " secondary channel 4 " at time t4, current secondary channel is switched to " secondary channel 5 " from " secondary channel 4 "; Detect behind the I frame on " secondary channel 5 " at time t5, current secondary channel is switched to " secondary channel 6 " from " secondary channel 5 "; Detect behind the I frame on " secondary channel 6 " at time t6, current secondary channel is switched to " secondary channel 7 " from " secondary channel 6 "; Detect behind the I frame on " secondary channel 7 " at time t7, current secondary channel is switched to " secondary channel 8 " from " secondary channel 7 "; Detect behind the I frame on " secondary channel 8 " at time t8, current secondary channel is switched from " secondary channel 8 " get back to " secondary channel 1 ".Then, repeat this processing.Though on " secondary channel 1 " and " secondary channel 6 ", " secondary channel 2 " and " secondary channel 7 ", " secondary channel 3 " and " secondary channel 8 ", receive the I frame respectively simultaneously, but, upgrading I image duration, selecting each secondary channel with priority (precedence) order.Therefore, select " secondary channel 1 ", " secondary channel 2 ", " secondary channel 3 " in regular turn, and ignore the I frame of the renewal on " secondary channel 6 ", " secondary channel 7 " and " secondary channel 8 ".

As a result, between the period of output of main channel broadcast data,, upgrade the I frame of selected secondary channel, make it possible to export the up-to-date visual image of secondary channel thus whenever output during from the broadcast data of a secondary channel of described 8 secondary channel selections.

Figure 10 A and 10B illustrate the display screen layout that is used to present by the multi-channel visual images of Fig. 2,3,6 and 7 DMB receiver output.The broadcast data that the DMB receiver receives on a plurality of channels with graphic screen layout output among Figure 10 A and the 10B.As described in referring to Fig. 2-8, the I two field picture that use is associated upgrades the broadcast data of secondary channel, makes it possible to provide the up-to-date visual image of secondary channel thus.Can ask to carry out switching between main channel and selected secondary channel according to the user.For example, if the switching between main channel and secondary channel is then carried out in the viewing area that user's selection is associated with secondary channel.If selected viewing area then preferably, is amplified in the viewing area that user's selection is associated with main channel.Preferably, the DMB receiver prestores about the information (for example amplification ratio and display position) of amplifying, and uses described display message to amplify the viewing area that is associated with main channel.

In described explanation, though the DMB receiver receives a main channel and secondary channel or a main channel and two secondary channels simultaneously, the DMB receiver also can receive a main channel and two or more secondary channels simultaneously.Though the present invention is used for the DMB receiver, it also can be applied to the receiver that is used for any digital broadcasting, such as DMB, digital video broadcasting-hand-held (DVB-H) and MediaFLO.

Explanation is according to the broadcast data display method of an alternative embodiment of the invention.In described method, single screen divider is the viewing area corresponding to the broadcasting channel that can obtain in the DMB receiver; Receive historical or default channel list according to channel, one of channel that can obtain is set to main channel automatically, and remaining channel is set to secondary channel; And, with the form of thumbnail, show the broadcast data of described main channel in the viewing area that is associated, show the visual image of described secondary channel in the viewing area that is associated.

For example, in the DMB receiver, can obtain under the situation of two broadcasting channels, display screen is divided into two viewing areas, and the broadcast data of a main channel is presented in one of viewing area, and the up-to-date visual image of a secondary channel is presented in another viewing area.In the DMB receiver, can obtain under the situation of four broadcasting channels, display screen is divided into four viewing areas, and with the form of thumbnail, the broadcast data of a main channel is presented in one of viewing area, and the up-to-date visual image that will remain three secondary channels is presented in their the corresponding viewing area.

The broadcast data of main channel can comprise video data and voice data.The up-to-date visual image of secondary channel can be the rest image corresponding to the I frame that detects in the broadcast data of secondary channel.Under the situation that channel switches, described rest image also can be corresponding to the original image of catching from the broadcast data of the nearest decoding of main channel the preceding.Preferably, the broadcast data of main channel and the up-to-date visual image of secondary channel are adjusted size according to the position of the corresponding viewing area in single screen with size, and it is shown with the thumbnail form.

Referring to Figure 11, described method is described as follows.

When the user started DMB and receives, the DMB receiver carried out channel scanning at step S310, the broadcasting channel that can obtain with identification, and be viewing area corresponding to each obtainable channel at step S315 with described screen divider.At step S320, the DMB receiver receives broadcast data simultaneously on the channel that can obtain, and at step S325, will adjust size at the video image in the broadcast data that is received, so that video image can adapt in their corresponding display.

The DMB receiver checks whether have previous channel identifier in step 330, if there is previous channel identifier, then the DMB receiver is set to main channel at the channel of the previous channel identifier of step S335.If there is no previous channel identifier, then one of DMB receiver channel that can obtain at step S336 is set to main channel.The DMB receiver is set to secondary channel at the remaining channel that can obtain of step S340, and detects the I frame in the broadcast data of secondary channel.

The DMB receiver is combined as the screen output image at step S345 with the I frame that detected and the vision signal of main channel, and shows described screen output image.That is, although the video and audio signal of main channel is reproduced as broadcasting stream, independently the I frame that detects of secondary channel is shown as up-to-date visual image.

The DMB receiver checks that at step S350 whether broadcasting channel is rescaned in user's request, if then DMB receiver repeating step S310 and step are subsequently rescaned in user's request.If the user is switched master/secondary channel in step S355 request, then the DMB receiver exchanges main channel and the secondary channel of being selected by the user at step S360, and repeating step S345 and step subsequently.That is, behind step S360, the video and audio signal of new main channel is reproduced as broadcasting stream, and the I frame that is detected of previous main channel is shown as up-to-date visual image in corresponding display.Receive if the user asks to stop DMB in step S365, then stop DMB and receive, otherwise the DMB receiver turns back to step S345 to continue the display screen output image.

As mentioned above, DMB receiver of the present invention shows up-to-date multichannel image simultaneously on single screen.Show the broadcast data of a main channel and the I frame that extracts from the broadcast data of a plurality of secondary channels in the corresponding viewing area in single screen simultaneously.As a result, during the watching of main channel broadcasting, the user can use up-to-date visual image easily to carry out channel selection or switching.

Referring to Figure 12, described method is described as follows.

When the user started the DMB reception, the DMB receiver was carried out the broadcasting channel that channel scanning can obtain with identification at step S410, and showed the tabulation of the channel that can obtain in step S415.If in the DMB receiver, there is the reception history of identifier with the channel that receives in advance, then can skips steps S410.When the user was chosen in channel in the tabulation, at step S420, the DMB receiver reproduced the broadcast data of selected channel on full screen.

During full screen showed, if the user asks the all-channel watching mode at step S425, then the DMB receiver was the viewing area corresponding to each channel that can obtain in the just described screen divider of step S430.In step S435, the DMB receiver receives broadcast data simultaneously on the channel that can obtain, and will adjust size at the video image in the broadcast data that is received at step S440, so that video image can adapt in the corresponding display.

After image is adjusted size, at step S445, the vision signal of the channel (main channel) that the DMB receiver will be selected at step S420 in corresponding display is reproduced as broadcasting stream, and in step S450 the remaining I frame that is detected that obtains channel (secondary channel) is shown as up-to-date visual image in regular turn in corresponding display.

Show at the same time during the multi-channel visual images that the DMB receiver can be carried out user's requested operation in step S455.In conjunction with Figure 13 and 14 user's requested operation is described.

Referring to Figure 13, in the all-channel watching mode, the DMB receiver shows main channel broadcast data and up-to-date secondary channel visual image on single screen.If the viewing area that user's selection is associated with main channel, then the DMB receiver carries out the transition to amplification mode, amplify selected viewing area with default ratio, and show the best video image of adjusting according to the viewing area amplification in the big or small main channel broadcast data.If the user imports the request that full screen shows, then the DMB receiver carries out the transition to full screen mode, and reproduces the main channel broadcast data in full screen.If that the user imports is main/request that secondary channel switches, then the DMB receiver switches main channel and secondary channel data transmission path, as referring to Figure 14 aftermentioned.

In amplification mode, if the viewing area that user's selection is associated with main channel, then the DMB receiver amplifies selected viewing area with default ratio in screen size restriction, and shows and preferably therefore adjust big or small, the video image in the main channel broadcast data.If make the viewing area that is associated surpass the screen size restriction if the user imports the request or the amplification incident of full screen demonstration, then the DMB receiver carries out the transition to full screen mode.

In full screen mode, the DMB receiver reproduces the main channel broadcast data in full screen.If the user imports the request that all-channel is watched, then the DMB receiver carries out the transition to the all-channel watching mode by carrying out in conjunction with the described operation of Figure 12.If the request of main/secondary channel switching that the user imports, then the DMB receiver is carried out the switching between main channel and secondary channel.

Referring to Figure 15-18 sequence in response to the screen layout of customer incident is described.

Referring to Figure 14, on single screen, show therein in the all-channel watching mode of main channel broadcast data and up-to-date secondary channel visual image, when the user asks to switch master/secondary channel in step S605, the DMB receiver is at the step S610 data transfer path that is associated with main channel and selected secondary channel of exchange each other, in step S615, detect the I frame of main channel the preceding, and in corresponding display, the I frame that is detected is shown as up-to-date visual image, and in step S620, the video and audio signal of new main channel is reproduced as broadcasting stream.Leading/secondary channel is between transfer period, the visual image of main channel the preceding and new main channel can be adjusted size according to their corresponding viewing area.

Referring to Figure 15, when the user started the DMB receiver, the DMB receiver is 10 information that receive about the broadcasting channel that can obtain from the broadcasting center among Fig. 1, use described channel information to construct channel list, and show the channel list of being constructed, shown in initial screen 510.In order to construct channel list, the DMB receiver can scan the channel information of terrestrial DMB, is used for electronic program guides (EPG) information of satellite dmb, perhaps uses the channel of favorite channels to receive historical.

Thereafter, for the demonstration of multi-channel visual images, the DMB receiver is divided into viewing area corresponding to the broadcasting channel that can obtain with display screen, shown in screen layout 520,530 and 540.Preferably, the quantity of viewing area equals the quantity of the broadcasting channel that can obtain.One of viewing area is associated with the broadcasting channel that is selected as main channel, and is used to show the streaming data of main channel.Remaining viewing area is associated with broadcasting channel (secondary channel) except main channel, and is used for the I frame that the broadcast data at the broadcasting channel of correspondence detects is shown as up-to-date visual image.

Though for secondary channel the I frame is shown as up-to-date visual image, also can shows the streaming data.For secondary channel stream broadcast data, the audio signal of preferably removing secondary channel broadcasting data is to avoid the potentially conflicting with the main channel audio signal.

After the division of screen, streaming data main channel, that comprise video and audio signal that in the viewing area that is associated, show to use initial screen 510 to select, and the I frame that will in the broadcast data of secondary channel, detect with viewing area that each secondary channel is associated in be shown as up-to-date visual image.

The I frame that can once show the secondary channel of a plurality of independences by buffering I frame perhaps shows the I frame of the secondary channel of a plurality of independences, as shown in Figure 15 with the order of the channel identifier of the channel list order of thumbnail scanning (perhaps with).

For example, as shown in screen layout 520, with viewing area that main channel is associated in show the streaming data of main channel (Ch1), and with viewing area that secondary channel is associated in the I frame of secondary channel (Ch2) is shown as up-to-date visual image.In the default duration (N second), after three frame periods, the I frame of another secondary channel (Ch3) is shown as up-to-date visual image in the viewing area that is associated, as shown in the screen layout 530.After the default duration according to the quantity of the secondary channel that will show, the I frame with all secondary channels in corresponding display is shown as up-to-date visual image, as shown in the screen layout 540.

As mentioned above, the DMB receiver will equal the video data combination of the number of I frame of quantity and the main channel of secondary channel, and the video data and the voice data of the combination of output main channel.

Referring to Figure 16, the DMB receiver comprises DMB module 610, TS demultiplexer 620, video coder-decoder 630, audio coder-decoder 640, image calibration device (scaler) 650, loud speaker 660 and display unit 680.

Element in the DMB receiver of Figure 16 is similar to the counter element in the DMB receiver of Fig. 2 on function.That is, DMB module 610, TS demultiplexer 620, video and audio coder- decoder 630 and 640, loud speaker 660 and display unit 680 are at the DMB module 110, TS demultiplexer 120, A/V coding decoder 150 and the DMB output unit 170 that are similar on the function in Fig. 2.

The DMB receiver of Figure 16 comprises and is used for broadcast data is carried out the image calibration device 650 that video image is adjusted size, and be the special receiver of simplifying in order to illustrate multi-channel visual images to handle, therefore can comprise and graphic those similar add ons in Fig. 2.

When starting DMB and receive, the multichannel broadcast singal that DMB module 610 receives corresponding to the broadcasting channel of being selected by the user, and export the TS data of selected broadcasting channel.TS demultiplexer 620 will be separated into the broadcast data of each broadcasting channel from the TS data multiplex of DMB module 610, and be video and voice data with described channel broadcasting data separating.

Video coder-decoder 630 will be the channel video signal from the video data decoding of TS demultiplexer 620.Audio coder-decoder 640 will be decoded as the channel audio signal from the voice data of TS demultiplexer 620.

Image calibration device 650 is adjusted size according to the size and the position of corresponding display with the video image of channel video signal.For the display screen with display unit 680 is divided into viewing area corresponding to the broadcasting channel that can obtain, screen divider device (not shown) may be provided in the image calibration device 650 or as independent component.

After adjusting size, be selected as main channel channel (Ch1) vision signal 671 by with the streamed viewing area 681 that is associated of outputing to showing, and its audio signal by with the streamed loud speaker 660 that outputs to reproduce.The I frame that is detected (rest image 673-677) of remaining channel Ch2-Ch9 (secondary channel) is shown as up-to-date visual image in their corresponding viewing area 683-687.

The DMB receiver of Figure 16 is divided into viewing area corresponding to broadcasting channel with display screen, the original image of the nearest decoding of each broadcasting channel is adjusted size, and in their corresponding display the image that is resized is shown as thumbnail.Therefore, behind channel scanning, can on screen, show thumbnail,, make it possible to thus easily and carry out channel selection apace and switch to watch for example to represent corresponding broadcasting channel with the form of channel list.

Referring to Figure 17, screen layout is relevant to the operation of the viewing area that is associated with main channel.When the user started the DMB receiver, the tabulation of DMB receiver indicated channel was shown in screen layout 710.Can use electronic program guides (EPG) information of satellite dmb or use the channel of favorite channels to receive history, construct channel list by the channel scanning that is used for terrestrial DMB.

If the user selects the identifier as the channel (Ch1) of main channel during the demonstration of channel list, then the DMB receiver is by to be shown the vision signal of selected channel and by reproduce its audio signal via loud speaker, to export the streaming data of selected channel by screen layout's 720 graphic full screen modes.

If the user asks all-channel to be watched during full screen mode, then the DMB receiver carries out the transition to the all-channel watching mode, and quantity according to the channel that can obtain, the multi-channel visual images that shows the channel that can obtain on screen in their the corresponding viewing area is shown in screen layout 731,733 or 735.The DMB receiver also can be during the demonstration of channel list, the request of watching in response to all channels and directly carry out the transition to the all-channel watching mode.

During the all-channel watching mode, preferably, will be selected for the main channel watched and distinguish mutually by the secondary channel shown in the screen layout 731.That is the streaming data that, in the viewing area that is associated, show main channel Ch1.To in their corresponding display, be shown as up-to-date visual image such as the rest image the I frame that in the broadcast data of each secondary channel Ch2-Ch9, detects.

If the user selects the viewing area that is associated with main channel during the all-channel watching mode, then the DMB receiver carries out the transition to amplification mode, shown in screen layout 740, amplify the viewing area that is associated with predetermined ratio, and preferably will video image displayed adjust size according to the amplification of the viewing area that is associated.

If the user selects the amplification viewing area be associated with main channel Ch1 again during amplification mode, then the DMB receiver carries out the transition to full screen mode, and as shown in the screen layout 750, the viewing area that is associated being amplified to full screen, and preferably, the video image displayed of wanting in the broadcast data of main channel Ch1 is adjusted size according to the amplification of the viewing area that is associated.

Though not shown in Figure 17, the DMB receiver can be by for example previous model function, from current display mode to before display mode reverse transition.

Referring to Figure 18, described screen layout switches relevant with channel.Initially, as shown in the screen layout 810, a main channel Ch1 is associated with viewing area 811, and the DMB receiver is in the all-channel watching mode.

During---wherein showing the multi-channel visual images to obtain broadcasting channel---at the all-channel watching mode, if the user with focus (focus) from the viewing area 811 move to viewing area 812 main to be used for/secondary channel switches, then the DMB receiver is placed on focus by on the screen layout 820 graphic viewing areas 812.If the user waits by the button input and selects the viewing area 812 that focused, then the DMB receiver is carried out main/secondary channel and is switched, shown in screen layout 830.

Promptly, leading/secondary channel switches (screen layout 820) before, shows the stream vision signal of main channel Ch1 in viewing area 811, and show the I frame of secondary channel Ch2 in viewing area 812.Leading/after secondary channel switches (screen layout 830), in viewing area 812, show the stream vision signal of new main channel Ch2, and in viewing area 811, rest image previous main channel Ch1, such as the I frame is shown as up-to-date visual image.Described rest image can be the I frame that detects in the broadcast data of nearest decoding of main channel Ch1 formerly, or from its original image of catching.Can before showing, described I frame or original image adjusted size according to the size of corresponding display and position.

During all-channel watching mode (screen layout 830), if user's selection and current main channel Ch2 viewing area 812 that be associated, that paid close attention to, then the DMB receiver carries out the transition to amplification mode, amplify viewing area 812 with default ratio, shown in screen layout 840, and preferably according to the amplification of viewing area 812, in the broadcast data of main channel Ch2, to want video image displayed to adjust big or small.

During amplification mode (screen layout 840), if the user selects and current main channel Ch2 viewing area 812 that be associated, that be exaggerated, then the DMB receiver carries out the transition to full screen mode, viewing area 812 is amplified to by the full screen shown in the screen layout 850, and preferably according to the amplification of viewing area 812, will be in the broadcast data of main channel Ch2, to want video image displayed to adjust big or small.

During full screen mode (screen layout 850), if the user request channel between current main channel Ch2 and secondary channel Ch1 switches, then the DMB receiver shows the streaming data of new main channel Ch1 on by the full screen shown in the screen layout 890.

During amplification mode (screen layout 840), if the user moves on to the viewing area 811 that is associated with secondary channel Ch1 with focus from the viewing area 812 that is associated with current main channel Ch2, then the DMB receiver is placed on focus by on the screen layout 860 graphic viewing areas 811, if user's selection viewing area 811 that be associated with secondary channel Ch1, that focused, then the DMB receiver carries out the transition to initial all-channel watching mode, and carry out main/secondary channel and switch, shown in screen layout 870.

Promptly, leading/secondary channel switches (screen layout 860) before, shows the stream vision signal of main channel Ch2 in viewing area 812, and show the I frame of secondary channel Ch1 in viewing area 811.Leading/after secondary channel switches (screen layout 870), the stream vision signal that in viewing area 811, shows new main channel Ch1, and rest image new secondary channel Ch2, such as the I frame is shown as up-to-date visual image in the viewing area 812 that dwindles.Described rest image can be the I frame that detects in the broadcast data of nearest decoding of main channel Ch2 formerly, or from its original image of catching.Can before size and position display, described I frame or original image be adjusted size according to corresponding display.

During all-channel watching mode (screen layout 870), if user's selection and current main channel Ch1 viewing area 811 that be associated, that paid close attention to, then the DMB receiver carries out the transition to amplification mode, shown in screen layout 880, amplify viewing area 811 with default ratio, and preferably according to look ahead 811 amplification of demonstration, will be in the broadcast data of main channel Ch1, to want video image displayed to adjust big or small.

During amplification mode (screen layout 880), if the user selects and current main channel Ch1 viewing area 811 that be associated, that be exaggerated, then the DMB receiver carries out the transition to full screen mode, such shown in screen layout 890, viewing area 811 is enlarged into full screen, and preferably according to the amplification of viewing area 811, will be in the broadcast data of main channel Ch1, to want video image displayed to adjust big or small.

Obvious from above-mentioned explanation, the invention provides a kind of digit broadcasting receiver and broadcast data display method, make it possible to show simultaneously the multichannel visual image.The broadcast data of main channel and the visual image of secondary channel are shown simultaneously, and on I frame period basis, the visual image of the secondary channel of regular update makes it possible to export simultaneously up-to-date multi-channel visual images thus.Therefore, the user can easily select the channel expected.In addition, the up-to-date frame of the real time video image of main channel and secondary channel is presented in their corresponding display of single screen together, therefore, can easily carry out channel and switch by selecting viewing area that is associated with main channel and the viewing area that is associated with the target sub channel.And, can represent each video broadcasting of the broadcasting channel that can obtain by thumbnail; Thus, make it possible to easily and promptly carry out channel selection and channel and switch.

Though illustrated and illustrated the preferred embodiments of the present invention in this manual, but those skilled in the art can understand, under the situation that does not break away from the further the spirit and scope of the present invention that limit of appended claim, might carry out various changes or the modification of described embodiment.

Claims (68)

1. digit broadcasting receiver comprises:

The broadcast reception unit is used for while receiving digital broadcast data on a plurality of channels;

The broadcasting output unit is used for exporting simultaneously the real-time broadcast data of a specific channel and the rest image of residue channel on single screen; With

The rest image renovator is used for the rest image of the described residue channel of regular update.

2. according to the digit broadcasting receiver of claim 1, wherein, described broadcast reception unit is the while receiving digital broadcast data on a main channel and at least one secondary channel.

3. according to the digit broadcasting receiver of claim 2, comprise that also channel is provided with the unit, being used to be provided with will be by the channel of described broadcast reception unit reception.

4. according to the digit broadcasting receiver of claim 3, wherein, described channel is provided with the unit and resets current secondary channel according to the channel switching condition that sets in advance.

5. according to the digit broadcasting receiver of claim 4, wherein, described channel is provided with the channel list that the unit storage has a plurality of channel identifiers, described condition according to switching channels is chosen in one of channel identifier in the described channel list in regular turn, and current secondary channel is reset to the channel of selected channel identifier.

6. according to the digit broadcasting receiver of claim 5, wherein, the channel identifier on the channel list must be greater than or equal to the predetermined number that will output to the secondary channel of described single screen simultaneously.

7. according to the digit broadcasting receiver of claim 6, wherein, described channel list has the channel identifier of being selected by the user.

8. according to the digit broadcasting receiver of claim 6, wherein, described channel list has the identifier that receives the favorite channels of historical collection automatically from channel.

9. according to the digit broadcasting receiver of claim 6, wherein, described channel list has the identifier by the channel that can obtain of described digit broadcasting receiver scanning.

10. according to the digit broadcasting receiver of claim 6, wherein, described channel list has use from the information of electronic program guides and the channel identifier that produces.

11. according to the digit broadcasting receiver of claim 4, wherein, the condition that is used for switching channels is to change one of detection of cycle and the I frame on current secondary channel by the channel change request of user's input, default channel.

12. according to the digit broadcasting receiver of claim 3, wherein, in response to changing request from user's channel, described channel is provided with the unit and uses by described channel and change the channel that Channel Identifier setting that request followed will receive.

13. according to the digit broadcasting receiver of claim 5, wherein, described rest image renovator also comprises:

The I frame detector is used on the basis in I frame period, repeatedly detects the I frame in the broadcast data of current secondary channel;

The I frame memory is used to store the I frame of the described secondary channel that is detected, and uses the new I frame that detects to upgrade the I frame of being stored of current secondary channel.

14. according to the digit broadcasting receiver of claim 13, wherein, described I frame detector is stored the I frame period of secondary channel in advance, and will detect at its each I frame period, the picture frame that receives on current secondary channel and be the I frame.

15. according to the digit broadcasting receiver of claim 13, wherein, the size of the picture frame that the comparison of described I frame detector is received, and the detection of picture frame that will be bigger is the I frame.

16. according to the digit broadcasting receiver of claim 13, wherein, described I frame memory storage and renewal are corresponding to the I frame of current secondary channel.

17. according to the digit broadcasting receiver of claim 16, wherein, described broadcasting output unit also comprises:

The main channel buffer is used to store the real-time broadcast data of main channel; With

Image synthesizer is used for using real-time broadcast data of storing at described main channel buffer and the I frame of storing in the I frame memory to produce the screen output image.

18. digit broadcasting receiver according to claim 17, wherein, described image synthesizer selects to equal to output to simultaneously the number of I frame of predetermined number of the secondary channel of described single screen in regular turn from described I frame memory, and with the vision signal combination of selected I frame and main channel, to produce the screen output image.

19. according to the digit broadcasting receiver of claim 3, wherein, described broadcast reception unit also comprises:

Demultiplexer is used for separating each digital broadcast signal from the digital broadcast data that receives simultaneously at least two channels; And,

First switch is used to switch in main channel and secondary channel data transmission path on the output of described demultiplexer.

20. digit broadcasting receiver according to claim 19, wherein, described channel is provided with the unit according to the condition from user's channel switch request or the switching channels that sets in advance, to described first switch output control signal, is used to switch main channel and secondary channel data transmission path.

21. according to the digit broadcasting receiver of claim 20, wherein, the condition of described switching channels is the channel switching cycle.

22. according to the digit broadcasting receiver of claim 20, wherein, the condition of described switching channels is channel switching time.

23. according to the digit broadcasting receiver of claim 16, wherein, described broadcasting output unit also comprises:

The main channel buffer is used to store the real-time broadcast data of described main channel;

Secondary channel buffer is used to store the real-time broadcast data of described secondary channel;

Image synthesizer is used for using real-time broadcast data of storing at described main channel buffer and the I frame of storing in the I frame memory to produce the screen output image; And,

Second switch is used for the output of the output of main channel buffer or secondary channel buffer is connected to the input of described image synthesizer.

24. according to the digit broadcasting receiver of claim 23, wherein, described rest image renovator also comprises: the 3rd switch is used for the broadcast data of the broadcast data of main channel or secondary channel is directed to the input of I frame detector.

25. digit broadcasting receiver according to claim 24, wherein, described channel is provided with the unit basis from user's channel switch request or the channel switching condition that sets in advance, to described second switch and the 3rd switch output control signal, be used to switch main channel and secondary channel data transmission path.

26. according to the digit broadcasting receiver of claim 25, wherein, the condition of described switching channels is the channel switching cycle.

27. according to the digit broadcasting receiver of claim 25, wherein, the condition of described switching channels is channel switching time.

28. digit broadcasting receiver according to claim 25, wherein, described second switch is in response to the control signal that the unit is set from described channel, at described the 3rd switch the broadcast data of main channel is directed under the situation of input of described I frame detector, the output of described secondary channel buffer is connected to the input of described image synthesizer, and at described the 3rd switch the broadcast data of secondary channel is directed under the situation of input of I frame detector, the output of described main channel buffer is connected to the input of image synthesizer.

29. digit broadcasting receiver according to claim 25, wherein, described the 3rd switching response is in the control signal that the unit is set from described channel, at described second switch the output of described main channel buffer is connected under the situation of input of described image synthesizer, guide the broadcast data of described secondary channel to the input of described I frame detector, and at described second switch the output of secondary channel buffer is connected under the situation of input of described image synthesizer, guides the broadcast data of described main channel to the input of described I frame detector.

30. according to the digit broadcasting receiver of claim 1, wherein, described broadcasting output unit is exported real-time broadcast data and rest image to the corresponding viewing area in described single screen.

31. digit broadcasting receiver according to claim 30, also comprise: input unit, be used to receive user's input to select one of viewing area, wherein, described broadcasting output unit is carried out the main channel and the conversion between the secondary channel or the amplification of selected viewing area that are associated with selected viewing area in response to by the selection of user by the viewing area of input unit.

32. according to the digit broadcasting receiver of claim 31, wherein, if the viewing area that selection is associated with main channel, then described broadcasting output unit uses the amplification message that prestores to amplify selected viewing area.

33. according to the digit broadcasting receiver of claim 31, wherein, if the viewing area that selection is associated with secondary channel, then described broadcasting output unit is carried out the switching between main channel and secondary channel.

34., also comprise the image calibration device according to the digit broadcasting receiver of claim 1, be used for position and size according to the corresponding viewing area that is associated with each channel, adjust the size of real-time broadcast data and rest image.

35. a broadcast data display method that is used for digit broadcasting receiver comprises:

Receiving digital broadcast data on a plurality of channels; And,

On single screen, export the real-time broadcast data of a selected channel and the rest image of residue channel simultaneously.

36. the broadcast data display method according to claim 35 also comprises: the rest image of the described residue channel of regular update.

37. according to the broadcast data display method of claim 35, wherein, described receiving step comprises: the while is receiving digital broadcast data on a main channel and at least one secondary channel.

38. the broadcast data display method according to claim 35 also comprises: use the channel list with a plurality of channel identifiers, a channel is set to main channel, and at least one channel is set to secondary channel.

39. according to the broadcast data display method of claim 38, wherein, the channel identifier on the described channel list must be greater than or equal to the main channel that will be outputed to described single screen simultaneously and the predetermined number of secondary channel.

40. according to the broadcast data display method of claim 38, wherein, described channel list has the identifier of the channel of being selected by the user.

41. according to the broadcast data display method of claim 38, wherein, described channel list has the identifier that receives the historical favorite channels of collecting automatically from channel.

42. according to the broadcast data display method of claim 38, wherein, channel list has the identifier by the channel of broadcast figure receiver scanning.

43. according to the broadcast data display method of claim 38, wherein, described channel list has use from the information of electronic program guides and the channel identifier that produces.

44. according to the broadcast data display method of claim 38, wherein, the described step of exporting simultaneously also comprises:

The real-time broadcast data of output main channel; And

With the I frame that real-time broadcast data detects in by the sequence output broadcast data at each secondary channel to described single screen, wherein, described sequence comprises an I frame from each default secondary channel.

45. the broadcast data display method according to claim 38 also comprises:, switch main channel and secondary channel data transmission path according to from user's channel switch request or the channel switching condition that sets in advance.

46. according to the broadcast data display method of claim 38, wherein, the described step of exporting simultaneously also comprises:

With described single screen divider is the viewing area, and exports described real-time broadcast data and rest image to their corresponding display;

Receive user's input to select one of described viewing area; And,

Carry out the amplification of main/secondary channel switching or selected viewing area according to channel viewing area relevance.

47. according to the broadcast data display method of claim 46, wherein, the described step of exporting simultaneously also comprises:, then use the amplification message that prestores to amplify selected viewing area if selected viewing area is associated with main channel.

48. broadcast data display method according to claim 46, wherein, the described step of exporting simultaneously also comprises: if selected viewing area is associated with one of secondary channel, then carry out described main channel and with secondary channel that selected viewing area is associated between switching.

49. according to the broadcast data display method of claim 35, wherein, the described step of exporting simultaneously also comprises:

With described single screen divider is viewing area corresponding to each channel;

In one of described viewing area, show described real-time broadcast data; And

The rest image that in the residue viewing area of correspondence, shows the I frame.

50. according to the broadcast data display method of claim 49, wherein, the described step of exporting simultaneously also comprises:, described real-time broadcast data and rest image are adjusted size according to the position and the size of their corresponding display.

51. a broadcast data display method that is used for digit broadcasting receiver comprises:

In response to broadcast reception request, show channel list with the identifier that can obtain channel from the user;

On screen, show the broadcast data from the channel of channel list selection with full screen mode by the user;

In response to show at channel list or broadcast reception during the request watched of all channels, described screen divider is the viewing area corresponding to each obtained channel of described channel list;

The real-time broadcast data that on the corresponding viewing area of screen, shows selected channel; And,

In their corresponding display, show the rest image that remains channel simultaneously or in regular turn.

52. the broadcast data display method according to claim 51 also comprises:, described real-time broadcast data and rest image are adjusted size according to the position and the size of their corresponding display.

53. according to the broadcast data display method of claim 51, wherein, described rest image is the I frame that detects in the broadcast data of the residue channel except selected channel.

54., wherein, in the decode video data of corresponding channel, detect the I frame according to the broadcast data display method of claim 53.

55. according to the broadcast data display method of claim 51, wherein, described rest image is the original image of catching from the broadcast data of the nearest decoding of the residue channel except selected channel.

56. the broadcast data display method according to claim 51 also comprises: the rest image of the described residue channel of regular update.

57. the broadcast data display method according to claim 51 also comprises: select according to the user, a channel is set to main channel, and at least one channel is set to secondary channel.

58. according to the broadcast data display method of claim 51, wherein, the channel identifier on the described channel list must be greater than or equal to and will be output to the main channel of described screen and the predetermined number of secondary channel simultaneously.

59. according to the broadcast data display method of claim 58, wherein, described channel list has the identifier of the channel of being selected by the user.

60. according to the broadcast data display method of claim 58, wherein, described channel list has the identifier that receives the historical favorite channels of collecting automatically from channel.

61. according to the broadcast data display method of claim 58, wherein, channel list has the identifier by the channel of broadcast figure receiver scanning.

62. according to the broadcast data display method of claim 58, wherein, described channel list has the information of using electronic program guides and the channel identifier that produces.

63. broadcast data display method according to claim 51, also comprise: according to from user's channel switch request or the channel switching condition that sets in advance, between one data transfer path of the new selection of the data transfer path of selected channel and residue channel, switch.

64. according to the broadcast data display method of claim 51, also comprise the function of carrying out user's request in response to user's input, wherein, the step of carrying out the function of user's request also comprises:

With described screen divider is the viewing area, and exports described real-time broadcast data and rest image to their corresponding display;

Receive user's input to select one of described viewing area; And,

Carry out the amplification of channel switching or selected viewing area according to channel viewing area relevance.

65. broadcast data display method according to claim 64, wherein, described execution channel switches or amplification procedure also comprises: if selected viewing area is associated with the selected channel that is used for real-time broadcast data, then use the amplification message that prestores to amplify selected viewing area.

66. broadcast data display method according to claim 64, wherein, described execution channel switches or amplification procedure also comprises: if selected viewing area is associated with one of residue channel that is used for rest image, then selected channel and with residue channel that selected viewing area is associated between switch.

67., also be included in the step of carrying out during the broadcast reception according to the broadcast data display method of claim 51:

With described screen divider is viewing area corresponding to the current effective channel;

The real-time broadcast data that in the corresponding viewing area of described screen, shows one of effective channel;

The I frame of the effective channel of residue is shown as rest image in their corresponding display.

68. the broadcast data display method according to claim 67 also comprises: the rest image of real-time broadcast data and I frame is adjusted size according to the position of their corresponding display with size.

Images