CN107615773A - Reception device, image display, instantaneous speech power and method of reseptance - Google Patents
Reception device, image display, instantaneous speech power and method of reseptance Download PDFInfo
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- CN107615773A CN107615773A CN201680030178.8A CN201680030178A CN107615773A CN 107615773 A CN107615773 A CN 107615773A CN 201680030178 A CN201680030178 A CN 201680030178A CN 107615773 A CN107615773 A CN 107615773A
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- 238000000034 method Methods 0.000 title claims description 25
- 238000012545 processing Methods 0.000 claims abstract description 341
- 238000012360 testing method Methods 0.000 claims abstract description 80
- 239000000872 buffer Substances 0.000 claims description 247
- 230000009471 action Effects 0.000 claims description 44
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 23
- 238000003860 storage Methods 0.000 claims description 19
- 238000009825 accumulation Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 33
- 238000012544 monitoring process Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 15
- 230000008569 process Effects 0.000 description 13
- 230000008859 change Effects 0.000 description 11
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/26—Arrangements for switching distribution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Have：1st processing unit (101), it continuously exports the 1st reception data, and the output speed of the 1st reception data can be changed；2nd processing unit (102), it continuously exports the 2nd reception data, and the output speed of the 2nd reception data can be changed；Output switching portion (144), it receives data in the 1st exported from the 1st processing unit (101) and switches output between the 2nd reception data of the 2nd processing unit (102) output；Offset test section (140), it detects the 1st and receives the offset of data and the 2nd reception data on a timeline；And output speed control unit (141), it is in the case where the offset detected is more than threshold value set in advance, 1st processing unit (101) or the 2nd processing unit (102) are controlled, so that the 1st reception data and the output speed ratio common output speed set in advance of the advanced side in the 2nd reception data are slow.
Description
Technical field
The present invention relates to reception device, image display, instantaneous speech power and method of reseptance, more particularly to cut automatically
Change reception device, image display, instantaneous speech power and the method for reseptance of output.
Background technology
In the digital broacast receiver towards moving body, due to deviateing broadcast area with movement, or by
The influence of landform or ground structure thing, so, temporarily it is difficult to receive broadcast wave sometimes.On the other hand, in digital broadcasting, transport
The trunk desk or affiliate of same program are broadcasted to different frequency (channel).Their broadcast area typically mutually repeats, existing
Some digital broacast receivers are equipped with automatically switching to the function of the same program of other channels when being difficult to receive.
It is also, wide in ISDB-T (Integrated Services Digital Broadcasting-Terrestrial)
In broadcast mode, the full section service of high image quality and high tone quality and the higher single hop service of receiving intensity are carried out extensively in same channel
Broadcast.Generally, in single hop service and full section service, the synchronized broadcast of the same program of broadcast has been used respectively, existing
Digital broacast receiver in, be also equipped with automatically switching to the function of single hop service when being difficult to and receiving full section service.
In the function that these automatically switch to same program, due to generally there are the time of several seconds between same program
Difference, so, the problem that image or voice discontinuously jump when switching be present.In order to solve the problem, following this skill be present
Art.
For example, in the technology disclosed in patent document 1, in the single hop clothes to be relatively lagged behind from the display moment in receiver
It is not to switch immediately when business switches to relatively advanced full section service, but the amount of the time difference between two services of accumulation
Switched over after the data of full section service, thereby, it is possible to avoid image and voice caused by the time difference of output time
Jump.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2013-125986 publications
The content of the invention
The invention problem to be solved
In the technology described in patent document 1, in the case of switching instruction is detected between synchronized broadcast, accumulation output
The image and voice messaging that time broadcasts earlier relatively, until the accumulation of time difference between synchronized broadcast corresponding time
Untill completion, then image and voice are switched over, so, from wish switch at the time of in depot accumulation time without cutting
Change.
For example, after user have selected single hop broadcast, receiving in order for full section broadcast is detected in reception device
In the case of, automatically generate the channel selection handover request from single hop to full section.But full section will be waited by actually switching image and voice
Time difference between broadcast and single hop broadcast is several seconds.
Also, be applied to from full section be broadcast to single hop broadcast switching when, within this period, receive situation become
Change, the deterioration of full section broadcast, the seamless switching that can not be carried out avoiding the jump of image and voice and switch to single hop to broadcast.
And then be not only between full section broadcast and single hop broadcast, trunk desk and affiliate like that in different channels it is wide
Broadcast between the service of same program, towards fixed receiver broadcast and towards between the broadcast of moving body receiver, digital radio
It is between electricity broadcast and FM (Frequency Modulation) broadcast or AM (Amplitude Modulation) broadcast or wide
Broadcast when being switched between the different broadcast modes such as the stream service in internet, the skew of several seconds is also produced between content.
Therefore, it is an object of the present invention to can seamlessly switch the content to be received.
Means for solving the problems
The reception device of the 1st mode of the present invention is characterised by that the reception device has：1st processing unit, its basis
1st reception signal generation the 1st receives data, continuously exports the 1st reception data, and can receive the defeated of data to the 1st
Go out speed to be changed；2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception number
According to, and the output speed of the 2nd reception data can be changed；Output switching portion, it is defeated from the 1st processing unit
The 1st gone out receives data and switches output between the 2nd reception data of the 2nd processing unit output；Offset test section, its
Detect the described 1st and receive the offset of data and the 2nd reception data on a timeline；And output speed control unit, its
In the case where the offset detected by the offset test section is more than threshold value set in advance, to the 1st processing unit
Or the 2nd processing unit is controlled, so that the described 1st receives data and the described 2nd and receives an advanced side's in data
Output speed ratio common output speed set in advance is slow.
The reception device of the 2nd mode of the present invention is characterised by that the reception device has：1st processing unit, its basis
1st reception signal generation the 1st receives data, continuously exports the 1st reception data, and can receive the defeated of data to the 1st
Go out speed to be changed；2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception number
According to, and the output speed of the 2nd reception data can be changed；Output switching portion, it is defeated from the 1st processing unit
The 1st gone out receives data and switches output between the 2nd reception data of the 2nd processing unit output；Offset test section, its
Detect the described 1st and receive the offset of data and the 2nd reception data on a timeline；And output speed control unit, its
In the case where the offset detected by the offset test section is more than threshold value set in advance, instruction the 1st processing
Portion or the 2nd processing unit temporarily cease the advanced side's in the described 1st reception data and the 2nd reception data
Output.
The reception device of the 3rd mode of the present invention is characterised by that the reception device has：1st processing unit, its basis
1st reception signal generation the 1st receives data, continuously exports the 1st reception data, and can receive the defeated of data to the 1st
Go out speed to be changed；2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception number
According to, and the output speed of the 2nd reception data can be changed；Output switching portion, it is defeated from the 1st processing unit
The 1st gone out receives data and switches output between the 2nd reception data of the 2nd processing unit output；And offset detection
Portion, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline, and the 1st processing unit has
The described 1st the 1st output buffer unit for receiving data is temporarily accumulated, the 2nd processing unit, which has, temporarily accumulates the 2nd reception number
According to the 2nd output buffer unit, the reception device also have output position micro-adjustment portion, the output position micro-adjustment portion is to described
1st output buffer unit and the 2nd output buffer unit are specified and read address and cause from the reading address output data, described defeated
Go out speed controlling portion and be located at identical bits on uncached time shaft in the described 1st output buffer unit and the 2nd output buffer unit
In the case that the 1st put receives data and the 2nd reception data, buffer unit is exported to the described 1st output buffer unit and the described 2nd
At least any one party in reading speed is changed, thus, in the described 1st output buffer unit and the 2nd output buffer unit
In temporarily receive data and the 2nd positioned at the 1st of same position on depot accumulation time axle and receive data, the output position micro-adjustment portion
Countershaft is upper sometimes is connect in the 1st of same position for temporarily accumulation in the described 1st output buffer unit and the 2nd output buffer unit
In the case of receiving data and the 2nd reception data, the described 1st output buffer unit or the 2nd output buffer unit are specified Offsets
The reading address of amount corresponding with the offset detected by the offset test section.
The image display of the mode of the present invention is characterised by that the image display has：1st processing
Portion, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can be received to the 1st
The output speed of data is changed；2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, and continuous output should
2nd receives data, and the output speed of the 2nd reception data can be changed；Output switching portion, it is from described
The 1st of 1 processing unit output receives data and switches output between the 2nd reception data of the 2nd processing unit output；Offset
Test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline；Output speed controls
Portion, it is according to the offset detected by the offset test section, in the 1st processing unit and the 2nd processing unit
The output speed of at least any one party is changed；And display part, its according to from the output switching portion output data come
Show image.
The instantaneous speech power of the mode of the present invention is characterised by that the instantaneous speech power has：1st processing
Portion, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can be received to the 1st
The output speed of data is changed；2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, and continuous output should
2nd receives data, and the output speed of the 2nd reception data can be changed；Output switching portion, it is from described
The 1st of 1 processing unit output receives data and switches output between the 2nd reception data of the 2nd processing unit output；Offset
Test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline；Output speed controls
Portion, it is according to the offset detected by the offset test section, in the 1st processing unit and the 2nd processing unit
The output speed of at least any one party is changed；And voice output portion, it is according to the number from output switching portion output
According to exporting voice.
The method of reseptance of the mode of the present invention is characterised by, is comprised the following steps：Generated according to the 1st reception signal
1st receives data, continuously exports the 1st reception data；Data are received according to the 2nd reception signal generation the 2nd, continuously export this
2 receive data；Received the 1st of the output and switch output between data and the 2nd reception data of the output；Described in detection
The 1st of output receives data and the 2nd of the output the and receives the offset of data on a timeline；And detected according to described
Offset the output speed of at least any one party in the described 1st reception data and the 2nd reception data is changed.
Invention effect
According to the mode of the present invention, it can seamlessly switch the content to be received.
Brief description of the drawings
Fig. 1 is the block diagram of the structure for the content output apparatus for roughly showing embodiment 1.
Fig. 2 is the block diagram for the structure for roughly showing the 1st acceptance division and the 2nd acceptance division in embodiment 1.
Fig. 3 (A) and (B) are the skeleton diagrams of one of the hardware configuration for the content output apparatus for showing embodiment 1.
Fig. 4 is the skeleton diagram of one of the hardware configuration for showing the 1st processing unit and the 2nd processing unit in embodiment 1.
Fig. 5 is the 1st skeleton diagram for illustrating the action in the offset test section in embodiment 1.
Fig. 6 is the 2nd skeleton diagram for illustrating the action in the offset test section in embodiment 1.
Fig. 7 is the 3rd skeleton diagram for illustrating the action in the offset test section in embodiment 1.
Fig. 8 is the 4th skeleton diagram for illustrating the action in the offset test section in embodiment 1.
Fig. 9 is the flow chart for the action for showing the output speed control unit in embodiment 1.
Figure 10 (A) and (B) are the feelings for showing that the content reproducing positions of foreground system in embodiment 1 are more advanced than background system
The skeleton diagram of the situation of the data output from the 1st output buffer unit and the 2nd output buffer unit under condition.
Figure 11 (A) and (B) are the feelings for showing that the content reproducing positions of background system in embodiment 1 are more advanced than foreground system
The skeleton diagram of the situation of the data output from the 1st output buffer unit and the 2nd output buffer unit 126 under condition.
Figure 12 is the flow chart for the action for showing reception action instruction unit and reception condition monitoring portion in embodiment 1.
Figure 13 is the block diagram of the structure of the content output apparatus for the variation for roughly showing embodiment 1.
Figure 14 is the block diagram for the structure for roughly showing the 1st processing unit in the variation of embodiment 1.
Figure 15 is the block diagram for the structure for roughly showing the 2nd processing unit in the variation of embodiment 1.
Figure 16 is the outline for the hardware configuration for showing the 1st processing unit and the 2nd processing unit in the variation of embodiment 1
Figure.
Figure 17 is the block diagram of the structure for the content output apparatus for roughly showing embodiment 2.
Figure 18 is the block diagram for the structure for roughly showing the 1st acceptance division and the 2nd acceptance division in embodiment 2.
Figure 19 is the flow chart for the action for showing offset test section and output speed control unit in embodiment 2.
Figure 20 is the block diagram of the structure of the content output apparatus for the variation for roughly showing embodiment 2.
Figure 21 is the block diagram for the structure for roughly showing the 1st processing unit in the variation of embodiment 2.
Figure 22 is the block diagram for the structure for roughly showing the 2nd processing unit in the variation of embodiment 2.
Figure 23 is the block diagram of the structure for the content output apparatus for roughly showing embodiment 3.
Figure 24 is the block diagram of the structure of the content output apparatus for the variation for roughly showing embodiment 3.
Embodiment
Embodiment 1
Fig. 1 is the block diagram of the structure of the content output apparatus 100 for the reception device for being roughly shown as embodiment 1.
Content output apparatus 100 has the 1st processing unit 101, the 2nd processing unit 102, offset test section 140, output speed
Control unit 141, receive condition monitoring portion 142, output switching control unit 143, output switching portion 144, reception action instruction unit
145。
In addition, the method for reseptance of embodiment 1 is the method performed by content output apparatus 100.
1st processing unit 101 and the 2nd processing unit 102 receive from digital radio broadcasting, digital television broadcasting, FM respectively
The signal of the flow content of broadcast, AM broadcast and internet, generation receive data.1st processing unit 101 and the 2nd processing unit 102 can
The generated reception data of continuous output, and change the output speed for receiving data.
1st processing unit 101 has the 1st acceptance division 110, clock generation unit 130.2nd processing unit 102 has the 2nd acceptance division
120th, clock generation unit 130.
Fig. 2 is the block diagram for the structure for roughly showing the 1st acceptance division 110 and the 2nd acceptance division 120.
The reception signal of 1st acceptance division 110, generation receive data.1st acceptance division 110 solves with the 1st tuner section the 111, the 1st
Tune portion 112, the 1st demultiplexing section 113, the 1st input-buffer portion 114, the 1st lsb decoder the 115, the 1st output buffer unit 116.
The reception signal of 1st tuner section 111.Then, reception signal is supplied to the 1st demodulation section 112 by the 1st tuner section 111.Example
Such as, the 1st tuner section 111 receives the stream from digital radio broadcasting, digital television broadcasting, FM broadcast, AM broadcast and internet
The signal of content.
1st demodulation section 112 is demodulated to the reception signal provided from the 1st tuner section 111, thus generates flow data (number
Digital data).Then, flow data is supplied to the 1st demultiplexing section 113 by the 1st demodulation section 112.
1st demultiplexing section 113 separates necessary data in the flow data provided from the 1st demodulation section 112.Then, the 1st demultiplex
The data after separation are supplied to the 1st input-buffer portion 114 with portion 113.For example, the 1st demultiplexing section 113 is wide in digital radio
In the case of broadcasting, the speech data of selected service is separated in the flow data received.In the situation of digital television broadcasting
Under, the 1st demultiplexing section 113 separates the image data and speech data of selected service.In addition, in the feelings of digital television broadcasting
Under condition, though it is not illustrated, being, the 1st input-buffer portion 114 has image with input buffer and voice input-buffer
Device.Also, in the case where FM broadcast or AM are broadcasted, it is provided to from the flow data (speech data) of the 1st demodulation section 112 output
1st input-buffer portion 114.
1st data that temporarily storage provides from the 1st demultiplexing section 113 of input-buffer portion 114, provide it to the 1st decoding
Portion 115.
1st lsb decoder 115 decodes to the data received from the 1st input-buffer portion 114, and thus generation receives data
(content-data).Then, the 1st lsb decoder 115 will receive data and be supplied to the 1st output buffer unit 116.For example, inputted from the 1st
In the case that the data that buffer unit 114 provides are compression stream, the 1st lsb decoder 115 decompresses to the data, thus, generation
Receive data.In the case of the uncompressed stream of AM broadcast or FM broadcast, it need not be decompressed in the 1st lsb decoder 115
Processing, so, the data provided from the 1st input-buffer portion 114 are supplied directly to the 1st output buffer unit by the 1st lsb decoder 115
116。
The 1st output buffer unit 116 reception data that temporarily storage provides from the 1st lsb decoder 115, the reception data are provided
To the output switching portion 144 shown in Fig. 1.1st output buffer unit 116 will connect according to the clock signal from clock generation unit 130
Receive data and be supplied to output switching portion 144.Here, the content output apparatus 100 of embodiment 1 make clock generation unit 130 when
Clock signal intensity, thereby, it is possible to change to provide output switching portion 144 from the 1st output buffer unit 116 speed for receiving data
(reading speed).In other words, by changing clock signal, the reception data from the 1st output buffer unit 116 can be changed
Output speed.
The reception signal of 2nd acceptance division 120, generation receive data.2nd acceptance division 120 solves with the 2nd tuner section the 121, the 2nd
Tune portion 122, the 2nd demultiplexing section 123, the 2nd input-buffer portion 124, the 2nd lsb decoder the 125, the 2nd output buffer unit 126.
2nd tuner section 121, the 2nd demodulation section 122, the 2nd demultiplexing section 123, the 2nd input-buffer portion 124, the 2nd lsb decoder
125 and the 2nd output buffer unit 126 inputs with the 1st tuner section 111, the 1st demodulation section 112, the 1st demultiplexing section the 113, the 1st respectively
Buffer unit 114, the 1st lsb decoder the 115 and the 1st output buffer unit 116 equally play function.
Fig. 1 is returned to, the reception data from the 1st output buffer unit 116 and the reception number from the 2nd output buffer unit 126
According to being respectively provided to output switching portion 144.Now, the 1st output buffer unit 116 and the 2nd exports buffer unit 126 with output speed
Data output speed, the i.e. data reproduction speed that control unit 141 is specified, data output will be received respectively to output switching portion 144.
Specifically, the 1st output buffer unit 116 and the 2nd exports buffer unit 126 and delayed respectively by FIFO (First In First Out) type
Storage is formed.Output speed control unit 141 specifies the 1st output buffer unit 116 and the 2nd to export buffer unit to clock generation unit 130
126 respective data output speed.Clock generation unit 130 is according to the command speed from output speed control unit 141, with variable
Speed inputs FIFO readout clock speed, and thus, reproduction speed is controlled.Here, the 1st output buffer unit 116 and the 2nd is defeated
Go out buffer unit 126 and be set to FIFO type buffers to be illustrated, still, as long as output speed it is variable can or except this
Buffer, such as RAM (Random Access Memory) type buffer in addition.RAM type buffer is made up of dual port RAM,
Readout clock is the clock provided from clock generation unit 130.
Offset test section 140 detect from the 1st processing unit 101 output receptions data and from the 2nd processing unit 102 export
The offset of data on a timeline is received, the offset is notified to output speed control unit 141.
Output speed control unit 141 is according to the offset notified from offset test section 140, to the 1st processing unit 101 and
The output speed of at least any one party in 2 processing units 102 is changed.For example, output speed control unit 141 is according to being notified
Offset, to clock generation unit 130 instruction the 1st output buffer unit 116 and the 2nd export 126 respective data output of buffer unit
Speed is reproduction speed.Specifically, output speed control unit 141 is indicated clock generation unit 130, to reproduce position
Putting the reproduction speed of an advanced side turns into the reproduction speed slower than common output speed set in advance.
Also, at least any one party of the output speed control unit 141 in the 1st processing unit 101 and the 2nd processing unit 102
Output speed changed after, the offset notified from offset test section 140 be threshold value set in advance below feelings
Under condition, the output speed of the 1st processing unit 101 and the 2nd processing unit 102 is set to revert to original output speed, in other words as advance
The common output speed of setting.
Clock generation unit 130 is according to the instruction from output speed control unit 141, respectively to the 1st of the 1st acceptance division 110 the
The 2nd output buffer unit 126 for exporting the acceptance division 120 of buffer unit 116 and the 2nd provides clock.For example, clock generation unit 130 generates
The clock of common reproduction speed, the reproduction speed of low speed clock, reproduce the clock temporarily ceased in any one party.So
Afterwards, clock generation unit 130 provides the acceptance division for specifying common reproduction speed the clock of usual speed, to specifying low speed
The acceptance division of reproduction speed the clock of low speed is provided, provide the clock temporarily ceased to specifying the acceptance division that temporarily ceases.
Receive the reception situation that condition monitoring portion 142 monitors the 1st processing unit 101 and the 2nd processing unit 102.For example, receive shape
Condition monitoring unit 142 is according to reception level, the 1st demodulation section 112 and the 2nd demodulation section of the 1st tuner section 111 and the 2nd tuner section 121
The reception situation or content of the program satellite information of 122 frame lock situation, the 1st demultiplexing section 113 and the 2nd demultiplexing section 123
Interruption reception situation and the monitoring situation such as the decoding error rate of the 1st lsb decoder 115 and the 2nd lsb decoder 125, judge the 1st
The reception situation of the acceptance division 120 of acceptance division 110 and the 2nd, output switching control unit 143 and reception action instruction unit 145 are carried out
Notice.
Output switching control unit 143 is carried out according to from the notice for receiving condition monitoring portion 142 to output switching portion 144
The switching instruction of output data.In addition, the selection of output switching control unit 143 receives processing unit in order.In other words, export
The situation that the reception situation of the processing unit for the reception data that switch control portion 143 exports in generation from output switching portion 144 deteriorates
Under, instruction is sent to output switching portion 144, using by output switching as the reception data from another processing unit.
Output switching portion 144 is exported from the place received in order according to the instruction from output switching control unit 143
The reception data in reason portion are as output data.Output switching portion 144 is in the reception data exported from the 1st processing unit 101 and from the 2nd
Switch output between the reception data that processing unit 102 exports.
The processing unit for the reception data that reception action instruction unit 145 instruction exports with generation content output apparatus 100 is (following
Also referred to as foreground processing unit or foreground system) different processing unit (hereinafter also referred to background process portion or background system) it is dynamic
Make.For example, reception action instruction unit 145 carries out the scan channel (hereinafter also referred to background scanning) on backstage to background process portion
Action instruction, receives and collects due to mobile and uncollected broadcast service list.Then, the reception action basis of instruction unit 145
The service list of the collection, when deteriorating to tackle reception situation, indicate that the selection broadcast of background process portion exports with content in advance
Device 100 export content identical content other service (such as in same channel using different levels transmission single hop
Service and full section service) or the affiliate same service different with trunk desk or broadcast standard etc. other channels broadcast
Other services of same content.And then reception action instruction unit 145 indicates that background process portion is received as issued using internet
Wireless radio service issues the flow content with broadcast identical content like that.
Specifically, reception action instruction unit 145 in the 1st processing unit 101 and the 2nd processing unit 102, generation outputting cutting
Change portion 144 output receptions data processing unit reception situation deteriorate in the case of, indicate another processing unit reception with it is defeated
Go out the reception signal of service corresponding to the service of the reception data of the output of switching part 144.
Also, reception act instruction unit 145 in the 1st processing unit 101 and the 2nd processing unit 102, generation output switching portion
In the case that the reception situation of the processing unit of the reception data of 144 outputs deteriorates, it is not detected by and exports in another processing unit
In the case of being serviced corresponding to the service for the reception data that switching part 144 exports, scan channel is indicated to another processing unit.
As shown in Fig. 3 (A), CPU (Central Processing Unit), central processing unit, processing unit, computing
The processors 160 such as device, microprocessor, microcomputer, DSP (Digital Signal Processor) perform RAM (Random
Access Memory), ROM (Read Only Memory), flash memory, EPROM (ErasableProgrammable Read
Only Memory), EEPROM (Electrically Erasable Programmable ReadOnly Memory) etc. it is volatile
Property or nonvolatile semiconductor memory, disk, floppy disk, CD, compact disc, mini-disk, DVD (Digital Versatile
Disc the program) or in the memory 161 such as Blu-ray disc stored, the content output apparatus 100 recorded thus, it is possible to realize the above
Offset test section 140, output speed control unit 141, receive condition monitoring portion 142, output switching control unit 143 and receive dynamic
Make instruction unit 145.In addition, output switching portion 144 can be realized by the switch 162 controlled by processor 160.
Also, as shown in Fig. 3 (B), offset test section 140, output speed control unit 141, receive condition monitoring portion
142nd, output switching control unit 143 and reception action instruction unit 145 can be realized by process circuit 163.Process circuit 163
E.g. single circuit, compound circuit, the processor of sequencing, the processor of parataxis program, ASIC (Application
Specific integrated Circuit), FPGA (Field Programmable Gate Array) or to they carry out
Part obtained from combination.In addition, output switching portion 144 can be realized by the switch 162 controlled by process circuit 163.
And then as shown in figure 4, the 1st processing unit 101 and the 2nd processing unit 102 can by tuner 170, demodulator 171,
Demultiplexer 172, buffer 173, decoder 174, buffer 175 and clock generator 176 are realized.
1st tuner section 111 and the 2nd tuner section 121 are able to realize by tuner 170.The He of 1st demodulation section 112
2nd demodulation section 122 is able to realize by demodulator 171.1st demultiplexing section 113 and the 2nd demultiplexing section 123 difference energy
It is enough to be realized by demultiplexer 172.1st input-buffer portion 114 and the 2nd input-buffer portion 124 are able to pass through buffer
173 realize.1st lsb decoder 115 and the 2nd lsb decoder 125 are able to realize by decoder 174.1st output buffer unit
116 and the 2nd output buffer unit 126 can be realized by buffer 175.Clock generation unit 130 can pass through clock generator
176 realize.
Then, the action to content output apparatus 100 illustrates.
Fig. 5~Fig. 8 is the skeleton diagram for illustrating the action in offset test section 140.
Here, if offset test section 140 is slow by the 1st voice PCM data in the 1st output buffer unit 116 and the 2nd output
The 2nd voice PCM data in portion 126 is deposited as input and carries out their cross correlation process to illustrate.
Fig. 5 is the displacement for setting the 2nd voice PCM data in the 2nd output buffer unit 126 as the example of 0 situation.
First 1st voice PCM data of the offset test section 140 in the 1st output buffer unit 116 as shown in Fig. 5 (A)
With the product of first the 2nd voice PCM data in the 2nd output buffer unit 126 shown in Fig. 5 (B), each second PCM data it
Product is such, calculates the product of N number of data.Then, as shown in Fig. 5 (C), offset test section 140 obtains the aggregate value of this N number of product.
Here, N is more than 2 integer, it is assumed that is set in advance.
Fig. 6 is the displacement for setting the 2nd voice PCM data in the 2nd output buffer unit 126 as the example of 1 situation.
As shown in Fig. 6 (B), offset test section 140 makes the 2PCM data displacement one in the 2nd output buffer unit 126
Sample, it is same with Fig. 5 to obtain N number of product as shown in Fig. 6 (C), and obtain their aggregate value.
Fig. 7 is the displacement for setting the 2nd voice PCM data in the 2nd output buffer unit 126 as the example of 2 situation, Fig. 8
Be set the 2nd output buffer unit 126 in the 2nd voice PCM data displacement as 3 situation example.
As described above, offset test section 140 is carried out equally to whole voice PCM datas in the 1st output buffer unit 116
Product and computing, extract the result that maximum is taken in these results.Displacement now turns into the offset of two data.
Here maximum is set to, still, offset test section 140 can also obtain the cross-correlation coefficient of standardization and progress
Judge.If cross-correlation coefficient is 1, then it represents that serial data is completely the same, still, data mistake due to reception situation etc. be present
In the case of by mistake, turn into the value close to 1.Therefore, can by cross-correlation coefficient be threshold value set in advance, such as 0.9 more than
When displacement be set to offset.In this case, even if the higher product of calculated load is not carried out to the total data in buffer
And computing, also it can shift to an earlier date termination detection processing according to by being judged more than threshold value.
The offset so obtained is provided to output speed control unit 141, and output speed control unit 141 is handled the 1st
The instruction of the progress data output of processing unit 102 speed of portion 101 and the 2nd, i.e. reproduction speed.For example, output speed control unit 141 is right
Output in the processing unit more advanced than the opposing party from the reproducing positions of the 1st processing unit 101 and the content of the 2nd processing unit 102 output
Buffer unit carries out the control instruction of reproduction speed, so that the content reproducing positions are consistent with the side that the data output moment lags.
That is, output speed control unit 141 is indicated clock generation unit 130, so that the content of the side of reproducing positions in advance reproduces
Speed turns into the reproduction speed slower than common reproduction speed.Then, offset test section 140 detects each content reproducing positions
It is converged in permissible range, the information is notified that thus, output speed control unit 141 is to clock to output speed control unit 141
Generating unit 130 is indicated, to cause the output buffer unit in the processing unit of low speed reproduction to revert to the reproduction of usual speed.It is logical
Handle more than crossing, content reproducing positions (outgoing positions for receiving data) from the 1st processing unit 101 can be made and from the 2nd
The content reproducing positions (outgoing position for receiving data) of processing unit 102 are consistent.
In addition, the 1st output buffer unit 116 and the 2nd, which exports buffer unit 126, also plays following effect：Number will not be lost respectively
The reception data inputted when low speed reproduces with common bit rate are accumulated according to ground.
Fig. 9 is the flow chart for the action for showing output speed control unit 141.
Here, in an initial condition, the reception data from the 1st processing unit 101 are selected by output switching portion 144, and
User is exported.In other words, if the 1st processing unit 101 is foreground processing unit.Also, from the 1st output buffer unit 116 and the 2nd
Export buffer unit 126 and reception data are exported with common reproduction speed respectively.
First, output speed control unit 141 obtains the offset (S10) that offset test section 140 detects.
Then, output speed control unit 141 judge from the foreground system reception data that i.e. the 1st processing unit 101 obtains whether
Than being that the reception data that the 2nd processing unit 102 obtains are advanced (S11) from background system.For example, output speed control unit 141 judges
Whether the offset of the reception data obtained from the 1st processing unit 101 is more than threshold value set in advance.Obtained from the 1st processing unit 101
The offset of the reception data arrived is more than (S11 in the case of threshold value set in advance：It is), processing enters step S12, from
The offset for the reception data that 1 processing unit 101 obtains be threshold value set in advance below in the case of (S11：It is no), processing enters
Step S13.
In step s 12, output speed control unit 141 is indicated clock generation unit 130, so that it is defeated to come from the 1st
Go out the reception data of buffer unit 116 is output into low speed.In this case, change the reproduction speed of foreground system, therefore, this
In the speed that indicates be the low speed that user will not be made to feel the rank felt extremely.Receive the clock generation unit of this instruction
Common clock is not supplied to the 1st output buffer unit 116 by 130, and the clock of low speed set in advance is supplied to the 1st defeated
Go out buffer unit 116.Then, it the processing returns to step S10.
In step s 13, output speed control unit 141 is judged from the background system reception number that i.e. the 2nd processing unit 102 obtains
According to whether than being that the reception data that the 1st processing unit 101 obtains are advanced from foreground system.For example, output speed control unit 141 judges
Whether the offset of the reception data obtained from the 2nd processing unit 102 is more than threshold value set in advance.Obtained from the 2nd processing unit 102
The offset of the reception data arrived is more than (S13 in the case of threshold value set in advance：It is), processing enters step S14, from
The offset for the reception data that 2 processing units 102 obtain be threshold value set in advance below in the case of (S13：It is no), processing enters
Step S15.
In step S14, output speed control unit 141 is indicated clock generation unit 130, is come with to temporarily cease
From the output of the reception data of the 2nd output buffer unit 126.Here, it is not that instruction low speed is reproduced but rather indicate that the reason temporarily ceased
By being, the non-selected reception data from the 2nd processing unit 102 in output switching portion 144, and user is not exported.That is, this
Be because, due to being background system, so, even if temporarily ceasing reproduction, user does not feel as abnormal sense yet.And then pass through
Temporarily cease, can make 2 content reproducing positions consistent earlier.The clock generation unit 130 for receiving this instruction will not be logical
Normal clock is supplied to the 2nd output buffer unit 126, and will be supplied to the 2nd output buffer unit for temporarily ceasing the clock of output
126.Then, it the processing returns to step S10.
In step S15, output speed control unit 141 judges the output of the reception data from the 1st output buffer unit 116
Whether it is usual speed.(the S15 in the case where the output is not usual speed：It is no), processing enters step S16, in the output
It is (S15 in the case of usual speed：It is), processing enters step S17.
In step s 16, output speed control unit 141 is indicated clock generation unit 130, so that from the 1st output
The reception data of buffer unit 116 are output into usual speed.The clock generation unit 130 of this instruction is received when will be common
Clock is supplied to the 1st output buffer unit 116.Then, it the processing returns to step S10.
In step S17, output speed control unit 141 judges the output of the reception data from the 2nd output buffer unit 126
Whether it is usual speed.(the S17 in the case where the output is not usual speed：It is no), processing enters step S18, in the output
It is (S17 in the case of usual speed：It is), it the processing returns to step S10.
In step S18, output speed control unit 141 is indicated clock generation unit 130, so that from the 2nd output
The reception data of buffer unit 126 are output into usual speed.The clock generation unit 130 of this instruction is received when will be common
Clock is supplied to the 2nd output buffer unit 126.Then, it the processing returns to step S10.
In addition, in the flow chart shown in Fig. 9, temporarily ceased in step S14 from the defeated of the 2nd output buffer unit 126
Go out, it is however not limited to this example.As long as example, make slower than usual speed from being output into for the 2nd output buffer unit 126
Low speed, then can be arbitrary speed.In this case, for example, it is preferable that, in step s 16, turn into than foreground system i.e.
The slower low speed of low speed in 1st output buffer unit 116.
Flow chart according to Fig. 9, according to the offset obtained in step S10, to from the defeated of the 1st processing unit 101
Going out the situation more advanced than the output from the 2nd processing unit 102, (the reception data i.e. from foreground system are more advanced than background system
Situation) action illustrate.
In step s 11, output speed control unit 141 evaluates whether the advanced argument is more than threshold value.Here, in step S11
In be judged as that the advanced argument of the reception data (output content) from the 1st processing unit 101 is more than threshold value, processing enters step S12.
In step s 12, output speed control unit 141 is indicated clock generation unit 130, so that it is defeated to come from the 1st
Going out the output (reproduction of content) of the reception data of buffer unit 116 turns into low speed.
As a result, the offset that offset test section 140 monitors is gradually reduced, offset turns within threshold value after all
Value.Now, "No" is determined to be in step S11, processing enters step S13.
In step s 13, the output from the 2nd processing unit 102 lags than the 1st processing unit 101, so, it is determined as advanced
Amount is not more than threshold value (S13：It is no), processing enters step S15.
In step S15, the 1st output buffer unit 116 is in low speed reproduction, so, output speed control unit 141 judges
For "No", processing enters step S16.
In step s 16, output speed control unit 141 is indicated clock generation unit 130, so that it is defeated to come from the 1st
Going out the output (reproduction of content) of the reception data of buffer unit 116 turns into usual speed.
Then, the example with more than is on the contrary, to the output from the 2nd processing unit 102 than from the defeated of the 1st processing unit 101
The action of situation (reception data i.e. from the background system situation more advanced than foreground system) before excess of export illustrates.
In step s 11, reception data (reproducing output) ratio from the 1st processing unit 101 is from the 2nd processing unit 102
Lag output, so, advanced argument is less than threshold value.Therefore, output speed control unit 141 is judged as "No", and processing enters step
S13。
In step s 13, output speed control unit 141 judges the reception data (reproducing output) from the 2nd processing unit 102
It is whether more advanced than threshold value.In the case of more advanced than threshold value, output speed control unit 141 is determined as "Yes", and processing enters step
S14。
In step S14, output speed control unit 141 is temporarily ceased slow from the 2nd output to clock generation unit 130
Deposit the instruction of the output in portion 126.
The result of this control, the offset that offset test section 140 monitors are gradually reduced, and offset turns into threshold value after all
Within value.In this case, output speed control unit 141 is judged as "No" in step s 11.In step s 13, from the 2nd
The output of processing unit 102 lags than the 1st processing unit 101, so, output speed control unit 141 is determined as that advanced argument is not more than threshold
It is worth (S13：It is no), processing enters step S15.
In step S15, the 1st output buffer unit 116 is in (S15 during usual speed reproduces：It is), so, processing enters
Step S17.
In step S17, (S17 (temporarily cease in) is in during low speed reproduces in the 2nd output buffer unit 126：It is no), institute
So that processing enters step S18.
In step S18, output speed control unit 141 is indicated clock generation unit 130, so that it is defeated to come from the 2nd
Go out the reception data of buffer unit 126 is output into usual speed.
Illustrated using actions of the Figure 10 and Figure 11 to more than.
The content reproducing positions of the foreground system for the content that Figure 10 (A) and (B) show to receive user's output are than backstage
The situation of the data output that buffer unit 126 is exported from the 1st output buffer unit 116 and the 2nd in the case that system is advanced.
Figure 11 (A) and (B) show that the content reproducing positions of background system are than the content reproducing positions of foreground system more advanced
In the case of from the 1st output buffer unit 116 and the 2nd export buffer unit 126 data output situation.
Figure 10 (A) shows the reception data exported from the 1st output buffer unit 116, and Figure 10 (B) is shown from the 2nd output caching
The reception data that portion 126 exports.As shown in Figure 10 (A) and (B), first, the reception data exported from the 1st output buffer unit 116
D4 relative to from the 2nd output buffer unit 126 Same Scene advanced 3 data volumes of reception data D4 output time.This
In, a square of the reception data in Figure 10 for example represents the data of a sample of PCM data.
Then, output speed control unit 141 carries out reproducing the 1st advanced output buffer unit 116 to clock generation unit 130
Low speed reproduction instruction.As a result, as reception data D8~D13 for shown in Figure 10 (A), being exported from the 1st output buffer unit 116 with than
Generally slow low speed is exported (reproduction).
It is also slow from the 2nd output as shown in Figure 10 (B) at the time of data D13 is received from the 1st output output of buffer unit 116
Deposit the output of portion 126 and receive data D13, respective reproducing positions are consistent.Therefore, output speed control unit 141 is to clock generation unit
130 carry out the usual speed reproduction instruction of the 1st output buffer unit 116.
After, even if output switching is background system by the deterioration of the situation of reception, output switching control unit 143, also it is not present
It is each to receive the skew of data, thus it is possible to realize non-jointed seamless switching in reproduction.
Then, Figure 11 (A) shows the reception data exported from the 1st output buffer unit 116, and Figure 11 (B) is shown from the 2nd output
The reception data that buffer unit 126 exports.As shown in Figure 11 (A) and (B), first, the reception exported from the 2nd output buffer unit 126
Data D4 relative to from the 1st output buffer unit 116 Same Scene advanced 3 data volumes of reception data D4 output when
Carve.
Then, output speed control unit 141 carries out reproducing the 2nd advanced output buffer unit 126 to clock generation unit 130
Reproduction temporarily ceases instruction.As a result, as shown in Figure 11 (B), the reception number exported from the 2nd output buffer unit 126 is temporarily ceased
According to D7 output.
At the time of data D7 is received from the 1st output output of buffer unit 116, from the reproduction position of the reception data of each portion output
Put consistent.Therefore, output speed control unit 141 carries out the usual speed of the 2nd output buffer unit 126 to clock generation unit 130 again
Now indicate.
After, even if output switching is background system by the deterioration of the situation of reception, output switching control unit 143, also it is not present
It is each to receive the skew of data, thus it is possible to realize non-jointed seamless switching in reproduction.
So, in the case where the reproducing positions of background system are more advanced than the reproducing positions of foreground system, by temporarily stopping
The only reproduction of background system, mutual reproducing positions can be made consistent earlier.Also, only the reproduction speed of background system is entered
Row adjustment, therefore, it is possible to be controlled, and reproducing positions will not be brought to feel extremely caused by adjusting to user completely.
Figure 12 is the flow chart for the action for showing reception action instruction unit 145 and receiving condition monitoring portion 142.
First, reception action instruction unit 145 confirms whether background system is in background scanning (S20).In background system
(S20 in the case of in background scanning：It is), processing enters step S21, the feelings being not in background system in background scanning
(S20 under condition：It is no), processing enters step S24.
In the step s 21, receive condition monitoring portion 142 and judge whether the reception situation of foreground system deteriorates.It is being judged as
(S21 in the case that the reception situation of foreground system deteriorates：It is), processing enters step S22.
In step S22, reception action instruction unit 145 notifies the processing unit 101,102 of background system to stop background scanning.
And then processing unit 101,102 notice selection of the reception action instruction unit 145 to background system receives with foreground system
To content identical content and proceed by the instruction of decoding.This is further disliked to tackle the reception situation of foreground system
The situation of change and start for can seamless switching state preparation.
(S20 in the case of being not in background scanning in step S20：It is no), processing enters step S24.In step S24
In, reception action instruction unit 145 judge background system whether be in in the background decoding of foreground system identical content.Locating
(S24 in the case of in background decoding：It is), processing enters step the S25, (S24 in the case where being not in background decoding：
It is no), processing enters step S27.In addition, background decoding represents the decoding in backstage.
In step s 25, condition monitoring portion 142 is received to judge to carry out the reception situation of the background system of background decoding
Whether deteriorate.(the S25 in the case where the reception situation for being judged as background system deteriorates：It is), processing enters step S26, is sentencing
(S25 in the case that the reception situation for background system of breaking does not deteriorate：It is no), it the processing returns to step S20.
In step S26, reception acts instruction unit 145 and sends stopping to the processing unit 101,102 of background system in order to enter
Row seamless switching and prepare background decoding processing instruction.
Then, reception action instruction unit 145 judges whether other same content broadcasting services (S27).Judging
(S27 in the case of other same content broadcasting services to be present：It is), processing enters step S28, is being judged as being not present extensively
Broadcast (S27 in the case of other broadcast services of same content：It is no), processing enters step S29.
In step S28, reception action instruction unit 145 notifies the processing unit 101,102 of background system the choosing of the service
Platform and background decoding start to indicate.
On the other hand, in step S29, reception acts instruction unit 145 and the notice of processing unit 101,102 of background system is opened
Beginning carries out the instruction of background scanning.
Then, reception action instruction unit 145 is monitored that the background scanning that starts in by step S29 detects
Untill other channels in the broadcast of same content (S30).Then, if detecting same content (S30), processing enters step
Rapid S22.
As described above, what the reception situation of the processing unit 101,102 of the foreground system selected in output switching portion 144 deteriorated
In the case of, reception action instruction unit 145 is indicated the processing unit 101,102 of background system, same to proceed by
The output processing of content broadcasting service, so, compared with persistently carrying out the situation of background decoding of same content all the time, it can press down
System loading processed.Further, it is possible to background decoding is proceeded by when generation needs, further, it is possible to without background decoding
The service list generation based on background scanning is carried out in period, and then, the processing such as the presence confirmation of same content, energy can be carried out
Enough resources for effectively using background system.
Also, the same content in the processing unit 101,102 of the non-selected background system in output switching portion 144 decodes
In the case that reception situation deteriorates, if there is the other broadcast services for broadcasting same content, then reception acts instruction unit 145
The broadcast service is selected in background system.Also, in the case of in the absence of the other broadcast services for broadcasting same content,
Reception action instruction unit 145 indicates that the processing unit 101,102 of background system carries out scan channel, thus it is possible to enter when necessary
Row background scanning and the same content for selecting other channels, it can effectively use the resource of background system.
The content output apparatus 100 of embodiment 1 is formed as illustrated in figures 1 and 2, it is however not limited to this structure.
For example, it is also possible to such as Figure 13~form as shown in Figure 15.
Figure 13 is the block diagram of the content output apparatus 100# for the variation for roughly showing embodiment 1 structure.
Content output apparatus 100# has the 1st processing unit 101#, the 2nd processing unit 102#, offset test section 140, output
Speed controlling portion 141#, receive condition monitoring portion 142, output switching control unit 143, output switching portion 144, reception action instruction
Portion 145.In addition to the 1st processing unit 101#, the 2nd processing unit 102#, output speed control unit 141#, the content of the variation is defeated
Go out device 100# to form in the same manner as the content output apparatus 100 of embodiment 1.
Figure 14 is the block diagram for the structure for roughly showing the 1st processing unit 101#.
1st processing unit 101# has the 1st tuner section 111, the 1st demodulation section 112, the 1st demultiplexing section 113, the 1st input-buffer
Portion 114, the 1st lsb decoder the 115, the 1st output buffer unit 116, the decoding start time control of the 1st system clock count section the 117, the 1st
Portion 118.Except with the 1st system clock count section 117 and the 1st this point of decoding start time control unit 118 and without when
Beyond this point of clock generating unit 130, the 1st processing unit 101# of the variation is in the same manner as the 1st processing unit 101 in embodiment 1
Form.
Figure 15 is the block diagram for the structure for roughly showing the 2nd processing unit 102#.
2nd processing unit 102# has the 2nd tuner section 121, the 2nd demodulation section 122, the 2nd demultiplexing section 123, the 2nd input-buffer
Portion 124, the 2nd lsb decoder the 125, the 2nd output buffer unit 126, the decoding start time control of the 2nd system clock count section the 127, the 2nd
Portion 128.Except with the 2nd system clock count section 127 and the 2nd this point of decoding start time control unit 128 and without when
Beyond this point of clock generating unit 130, the 2nd processing unit 102# of the variation is in the same manner as the 2nd processing unit 102 in embodiment 1
Form.
In the content output apparatus 100 of embodiment 1, output speed control unit 141 carries out defeated to clock generation unit 130
Go out speed instruction, thus, the output speed from the 1st processing unit 101 or the reception data of the 2nd processing unit 102 is changed.
In the content output apparatus 100# of variation, output speed control unit 141# is to the 1st decoding start time control unit 118 or the
2 decoding start time control units 128 carry out output speed instruction, thus, to from the 1st processing unit 101 or the 2nd processing unit 102
The output speeds of reception data changed.It is illustrated below.
In the video stream and voice flow of the 1st lsb decoder 115 and the 2nd lsb decoder 125 is input to, exists and opened at which moment
Begin to carry out decoding such DTS (Decode Time Stamp) and PTS (PresentationTime to receiving frame data
Stamp).By the timestamp compared with system clock (STC), the decoding of each frame is thus carried out.In the variation, the 1st
Decode start time control unit the 118 and the 2nd decode start time control unit 128 by DTS and PTS with from the 1st system clock meter
The system clock that several 117 or the 2nd system clock count section 127 obtain is compared, thus, to the 1st lsb decoder 115 or the 2nd
At the time of the notice decoding of lsb decoder 125.
Then, the 1st decoding start time control unit the 118 and the 2nd decodes start time control unit 128 according to from output speed
Control unit 141# instruction is spent, makes the decoding speed in the 1st lsb decoder 115 or the 2nd lsb decoder 125 variable.For example, the 1st decoding
Start time control unit 118 and the 2nd is decoded with decoding the low speed of start time control unit 128, so, reproduced using low speed
Ratio converts to the value of system clock.
For example, when the difference for the pts value that the value for setting previous PTS receives with this is Δ PTS, the 1st decoding starts
Moment control unit 118 and the 2nd decodes start time control unit 128 and generally next frame is decoded after Δ PTS in STC.
On the other hand, make decoding speed slack-off, for example, in the case where being reproduced with common 90% speed, the 1st decoding starts
Moment control unit 118 and the 2nd decodes start time control unit 128 and is multiplied by 100/90 to STC.Thus, the 1st lsb decoder 115 or the 2nd
Lsb decoder 125 is decoded, and thus, the output speed of receiving frame is slack-off.
In this case, the 1st input-buffer portion 114 is acted as following buffer：Carried out in the 1st lsb decoder 115
In the case that low speed reproduces, it will not lose with the data of certain usual speed reception.Equally, the conduct of the 2nd input-buffer portion 124
Following buffer is acted：In the case where the 2nd lsb decoder 125 carries out low speed reproduction, will not lose with certain usual
The data that speed receives.
Also, in the output speed control flow shown in Fig. 9, step is carried out to the 1st decoding start time control unit 118
Low speed output indication in S12, the output in step S14 is carried out to the 2nd decoding start time control unit 128 and temporarily ceases finger
Show, the usual speed output indication in step S16 is carried out to the 1st decoding start time control unit 118, when starting to the 2nd decoding
Carve the usual speed output indication in the progress step of control unit 128 S18.
As shown in figure 16, the 1st processing unit 101# and the 2nd processing unit 102# of variation can pass through tuner 170, demodulation
Device 171, demultiplexer 172, buffer 173, decoder 174, buffer 175 and clock counter 177 are realized.
1st system clock count section 117 and the 2nd system clock count section 127 be able to by clock counter 177 come
Realize.1st decoding start time control unit the 118 and the 2nd decodes start time control unit 128 and is able to by controller 178
To realize.
As described above, according to the content output apparatus 100 of embodiment 1, detected according to offset test section 140 inclined
Shifting amount, output speed control unit 141 can change 102 respective reproduction speed of the 1st processing unit 101 and the 2nd processing unit, so,
Before the situation for being difficult to receive is produced, the data output position of 2 systems can be made consistent in advance.Therefore, even in preceding
Output switching is immediately background system in the case of deteriorating by the reception situation of platform system, also can without interruption seamless switching it is defeated
Go out.
And then output speed control unit 141 is with reference to the offset observed, in the advanced feelings of the data output of foreground system
Under condition, somewhat slow down the data output speed of foreground system, untill offset is converged in some threshold value, thus it is possible to
Make the data output position of 2 systems unanimously without bringing abnormal sense to user.
And then output speed control unit 141 is with reference to the offset observed, in the advanced feelings of the data output of background system
Under condition, the data output of background system is temporarily ceased, untill offset is converged in some threshold value, thus it is possible to will not
Abnormal sense ground is brought to user and makes the data output position of 2 systems consistent in a short time.
Embodiment 2
Figure 17 is the block diagram of the structure for the content output apparatus 200 for roughly showing embodiment 2.
Content output apparatus 200 has the 1st processing unit 201, the 2nd processing unit 202, offset test section 240, output speed
Control unit 241, receive condition monitoring portion 142, output switching control unit 143, output switching portion 144, reception action instruction unit
145th, position micro-adjustment portion 246 is exported.
Except the 1st processing unit 201, the 2nd processing unit 202, offset test section 240, output speed control unit 241 and output
Beyond position fine setting whole 246, the content output apparatus 200 of embodiment 2 and the content output apparatus 100 of embodiment 1 are same
Form sample.Therefore, below, mainly to the 1st processing unit 201, the 2nd processing unit 202, output speed control unit 241 and output section
Position fine setting whole 246 illustrates.
In addition, the method for reseptance of embodiment 2 is the method performed by content output apparatus 200.
1st processing unit 201 has the 1st acceptance division 210, clock generation unit 130.
2nd processing unit 202 has the 2nd acceptance division 220, clock generation unit 130.
Clock generation unit 130 is formed in the same manner as embodiment 1, so, below to the 1st acceptance division 210 and the 2nd acceptance division
220 illustrate.
Figure 18 is the block diagram for the structure for roughly showing the 1st acceptance division 210 and the 2nd acceptance division 220.
1st acceptance division 210 has the 1st tuner section 111, the 1st demodulation section 112, the 1st demultiplexing section 113, the 1st input-buffer
Portion 114, the 1st lsb decoder the 115, the 1st output buffer unit 216.
In addition to the 1st output buffer unit 216, the 1st acceptance division 210 in embodiment 2 and the 1st in embodiment 1
Acceptance division 110 is similarly formed.Below, the 1st output buffer unit 216 is illustrated.
The 1st output buffer unit 216 reception data that temporarily storage provides from the 1st lsb decoder 115, the reception data are provided
To the output switching portion 144 shown in Figure 17.1st output buffer unit 216, will according to the clock signal from clock generation unit 130
Receive data and be supplied to output switching portion 144.Here, the content output apparatus 200 of embodiment 2 makes clock generation unit 130
Clock signal changes, and thereby, it is possible to change to provide output switching portion 144 from the 1st output buffer unit 116 speed for receiving data
Degree.
Also, the 1st output buffer unit 216 is according to the instruction from output position micro-adjustment portion 246, from indicated reading
Address read-outing data, provide it to output switching portion 144.
The reception signal of 2nd acceptance division 220, generation receive data.2nd acceptance division 120 solves with the 2nd tuner section the 121, the 2nd
Tune portion 122, the 2nd demultiplexing section 123, the 2nd input-buffer portion 124, the 2nd lsb decoder the 125, the 2nd output buffer unit 226.
In addition to the 2nd output buffer unit 226, the 2nd acceptance division 220 in embodiment 2 and the 2nd in embodiment 1
Acceptance division 120 is similarly formed.In addition, the 2nd output buffer unit 226 plays function in the same manner as the 1st output buffer unit 216.
Data output speed of the content output apparatus 100 of embodiment 1 to the 1st processing unit 101 or the 2nd processing unit 102
It is controlled, makes the outgoing position of each reception data identical.For example, content output apparatus 100 passes through offset test section 140
Offset is detected, output speed control unit 241 carries out the judgement of data output speed, clock generation unit 130 is carried out as right
The output speed of the processing unit of elephant is specified.Thus, clock generation unit 130 changes the reading to the processing unit offer as object
Clock, thus, the output speed of the processing unit as object is changed.
In embodiment 2, it is contemplated that needed in this series of processes due to handling expense the time or
The situation that processing time changes according to the load of system.For example, carry out low speed output, offset in the 1st output buffer unit 116
The position for the reception data that test section 140 exports from the 1st output buffer unit 116 with the 2nd output buffer unit 126 just consistent feelings
Under condition, output speed control unit 141 carries out the output indication of usual speed to the 1st output buffer unit 116.But in system
Response is poor or response time inequality in the case of, when making output speed revert to usual speed, from each buffer unit
Data output position may be slightly offset.
Therefore, in order to not produce this skew, the content output apparatus 200 in embodiment 2 has the fine setting of output position
Whole 246.Below, illustrate.
Figure 17 is returned to, offset test section 240 detects to be connect from what the 1st output buffer unit 216 of the 1st processing unit 201 exported
The offset for the reception data that data and the 2nd output buffer unit 226 from the 2nd processing unit 202 export is received, the offset is notified
Give output position micro-adjustment portion 246.
Also, offset test section 240 judges whether to have cached the time in the 1st processing unit 201 and the 2nd processing unit 202
It is located at the reception data of same position on axle.Specifically, judge whether to delay in the 1st processing unit 201 and the 2nd processing unit 202
Deposit identical and receive data.Then, its judged result is supplied to output speed control unit 241 by offset test section 240.
Output speed control unit 241 indicates the 1st processing unit 201 according to the judged result notified to clock generation unit 130
Data output speed with least any one party in the 2nd processing unit 202 is reproduction speed.Thus, the output in embodiment 2
Speed controlling portion 241 is located at the reception number of same position in the 1st processing unit 201 and the 2nd processing unit 202 on cache-time axle
According to.
Also, output speed control unit 241 is received in the processing of the 1st processing unit the 201 and the 2nd from offset test section 240
Cached in portion 202 on time shaft after the judged result of the meaning of the reception data of same position, speed is adjusted and completed
Notice is supplied to output position micro-adjustment portion 246, and clock generation unit 130 is indicated, to cause the 1st processing unit 201
Common output speed set in advance is reverted to the output speed of the 2nd processing unit 202.
After output position micro-adjustment portion 246 receives the speed adjustment completion notice from output speed control unit 241, from
Offset test section 240 obtains the offset at the moment.Then, position micro-adjustment portion 246 is exported to the 1st output buffer unit 216
Specified with the 2nd output buffer unit 226 and read address, thus, the 1st output buffer unit 216 or the 2nd is exported buffer unit 226 from making
Address data output position offset by the position output data after amount corresponding with the offset, carry out the fine setting of the offset
It is whole.For example, output buffer unit of the output position micro-adjustment portion 246 to background process portion has specified Offsets and acquired offset
The reading address measured accordingly, thus, make foreground processing unit consistent with the outgoing position in background process portion.
As shown in Fig. 3 (A), the offset test section 240 for the content output apparatus 200 that the above is recorded, output speed control
Portion 241, receive condition monitoring portion 142, output switching control unit 143, reception action instruction unit 145 and output position micro-adjustment portion
246 also can perform the program stored in memory 161 to realize by processor 160.
Also, as shown in Fig. 3 (B), offset test section 240, output speed control unit 241, receive condition monitoring portion
142nd, output switching control unit 143, reception action instruction unit 145 and output position micro-adjustment portion 246 can pass through process circuit
163 realize.
And then as shown in figure 4, the 1st processing unit 201 and the 2nd processing unit 202 can also pass through tuner 170, demodulator
171st, demultiplexer 172, buffer 173, decoder 174, buffer 175 and clock generator 176 are realized.
Figure 19 is the flow chart for the action for showing offset test section 240 and output speed control unit 241.
First, as premise, if the 1st processing unit 201 and the 2nd processing unit 202 receive same content and generate reception data,
The generated reception data of output.As original state, it is assumed that be not present in the 2nd output buffer unit 226 and cached with the 1st output
The situation at the reception data identical data position of the content in being reproduced in portion 216.
First, output speed control unit 241 indicates that clock generation unit 130 low speed of the 1st processing unit 201 exports (S30).
Thus, clock generation unit 130, which is used in, exports the clock frequency ratio for receiving data for the 1st output buffer unit 216 generally slightly slowly, comes
It is relatively low from the output speed of the reception data of the 1st output buffer unit 216.
Offset test section 240 judges whether to store together in the 1st output buffer unit 216 and the 2nd exports buffer unit 226
One receives data (S31).Same (S31 in the case of receiving data is stored in two buffers：It is), processing enters step
S32, (S31 in the case of same reception data is not stored in two buffers：It is no), processing enters step S34.
In step s 32, output speed control unit 241 indicates clock generation unit 130 the usual speed of the 1st processing unit 201
Degree output.Thus, clock generation unit 130 makes the clock frequency for the 1st output buffer unit 216 revert to generally, defeated from the 1st
The output speed for going out the reception data of buffer unit 216 reverts to generally.
Then, output speed control unit 241 notifies speed adjustment to complete (S33) in output position micro-adjustment portion 246.By
This, output position micro-adjustment portion 246 obtains the offset at the moment from offset test section 240, at the moment, makes not to user
The OPADD position skew offset of the output buffer unit of the background system exported is simultaneously exported.Thereby, it is possible to make
The outgoing position of reception data from both output buffer units is completely the same.
On the other hand, same (S31 in the case of receiving data is not stored in two buffers in step S31：It is no),
Processing enters step S34.In step S34, offset test section 240 is carried out after the detection of same serial data is proceeded by
The time-out check of the situation of same serial data can not be detected.(S34 in case of overtime：It is), processing enters step S35,
(the S34 in the case where having not timed out：It is no), it the processing returns to step S31.
In step s 35, output speed control unit 241 indicates clock generation unit 130 the usual speed of the 1st processing unit 201
Degree output.Thus, clock generation unit 130 makes the clock frequency for the 1st output buffer unit 216 revert to generally.
Then, output speed control unit 241 indicates that clock generation unit 130 low speed of the 2nd processing unit 202 exports (S36).
Thus, clock generation unit 130, which is used in, exports the clock frequency ratio for receiving data for the 2nd output buffer unit 226 generally slightly slowly, comes
From the output speed step-down of the reception data of the 2nd output buffer unit 226.
Then, offset test section 240 judges whether to deposit in the 1st output buffer unit 216 and the 2nd exports buffer unit 226
Same reception data (S37) are stored up.Same (S37 in the case of receiving data is stored in two buffers：Be), handle into
Enter step S38.
In step S38, output speed control unit 241 indicates clock generation unit 130 processing of the 1st processing unit the 201 and the 2nd
The usual speed output in portion 202.Thus, clock generation unit 130 makes to export buffer unit for the 1st output buffer unit 216 and the 2nd
226 clock frequency reverts to generally.Then, processing enters step S33, and output position micro-adjustment portion 246 is to receiving data
Outgoing position is adjusted.
According to Figure 19 flow chart, to from the reception data that the 1st processing unit 201 exports than being exported from the 2nd processing unit 202
The advanced situation of data is received to illustrate.
In this case, in step s 30, the reproduction speed of the 1st processing unit 201 is made turn into low speed, thus, the 1st processing
The reproducing positions of the processing unit 202 of portion 201 and the 2nd approach in time, the number with the reception data in the 1st output buffer unit 216
Appeared in after all in the 2nd output buffer unit 226 according to string identical serial data.In this case, in step S31, offset detection
Portion 240 detects same data in two buffers.For example, offset test section 240 uses the 1st output He of buffer unit 216
The total data stored in 2nd output buffer unit 226 carries out shift operation as a result, it is possible to detect mutually shown in Fig. 5~Fig. 8
Relation number has a case that the value close to 1.In this case, it is judged as "Yes", in step s 32, output speed in step S31
Control unit 241 carries out the output indication (S32) of the usual speed of the 1st processing unit 201 to clock generation unit 130.In addition, offset
Test section 240 can interpolate that not deposited in two buffers in the case where cross-correlation coefficient is below value set in advance
In same data.
Thus, the output of the reception data from the 1st output buffer unit 216 turns into the output of usual speed again.After,
Receptions data from the 1st output buffer unit 216 and the reception data from the 2nd output buffer unit 226 are as inclined with originally
Shifting amount is compared, some smaller certain offset is exported.
Then, in step S33, output speed control unit 241 notifies speed to adjust in output position micro-adjustment portion 246
Into.Thus, the offset that position micro-adjustment portion 246 obtains the moment from offset test section 240 is exported, at the moment, is made not
The OPADD position skew offset of the output buffer unit of the background system exported to user simultaneously exports.Thus,
The outgoing position of the reception data of the output buffer unit from both can be made completely the same.
Then, according to Figure 19 flow chart, to from the reception data ratio that the 1st processing unit 201 exports from the 2nd processing unit 202
The situation of the reception data hysteresis of output illustrates.
In this case, the reproduction speed of the 1st processing unit 201 is made turn into low speed in step s 30, thus, the 1st processing unit
The reproducing positions of 201 and the 2nd processing unit 202 are remote in time.Then, it is judged as "No" all the time in step S31, so,
The inspection of detection time-out is carried out in step S34.In this case, step S31 and step S34 processing is repeated, until
Untill producing detection time-out.
(the S34 after generation detection time-out in step S34：It is), in step s 35, output speed control unit 241 carries out the
The usual output indication of 1 processing unit 201.Thus, the reproduction speed of the content exported from the 1st output buffer unit 216 reverts to logical
Often.
Then, output speed control unit 241 carries out the low speed output indication of the 2nd processing unit 202.Thus, it is slow from the 2nd output
The reproduction speed for depositing the content of the output of portion 226 is somewhat slack-off.Then, between the content of the 1st processing unit 201 and the 2nd processing unit 202
Offset reduces.
Then, same serial data is accumulated respectively in the 1st output buffer unit 216 and the 2nd exports buffer unit 226.Now, exist
In step S37, offset test section 240 detects same serial data (S37 in two buffers：It is), processing enters step
S38。
In step S38, output speed control unit 241 carries out the usual speed of the 1st processing unit 201 and the 2nd processing unit 202
Output indication.Then, processing enters step S33, and output speed control unit 241 notifies speed to output position micro-adjustment portion 246
Degree adjustment is completed.Thus, the offset that position micro-adjustment portion 246 obtains the moment from offset test section 240 is exported, at this
Carve, the OPADD position skew offset of the output buffer unit for the side for making not export user simultaneously exports.By
This, can make the reception data of the output buffer unit from both completely the same.
In the flow chart shown in Figure 19, low speed output is indicated in step S30 and step S36, still, defeated to user
In the case of the foreground system for going out control object, do not brought the low speed output control for the degree felt extremely to user.Not
In the case of the background system exported to user, the degree that can export low speed is slower.Thereby, it is possible in a short time
Same serial data is detected, the time required for making outgoing position consistent can be shortened.
The content output apparatus 200 of embodiment 2 is formed as shown in Figure 17 and Figure 18, it is however not limited to this knot
Structure.For example, it is also possible to such as Figure 20~form as shown in Figure 22.
Figure 20 is the block diagram of the content output apparatus 200# for the variation for roughly showing embodiment 2 structure.
Content output apparatus 200# has the 1st processing unit 201#, the 2nd processing unit 202#, offset test section 240, output
Speed controlling portion 241#, receive condition monitoring portion 142, output switching control unit 143, output switching portion 144, reception action instruction
Portion 145, output position micro-adjustment portion 246.Except the 1st processing unit 201#, the 2nd processing unit 202# and output speed control unit 241#
In addition, the content output apparatus 200# of the variation is formed in the same manner as the content output apparatus 200 of embodiment 2.
Figure 21 is the block diagram for the structure for roughly showing the 1st processing unit 201#.
1st processing unit 201# has the 1st tuner section 111, the 1st demodulation section 112, the 1st demultiplexing section 113, the 1st input-buffer
Portion 114, the 1st lsb decoder the 115, the 1st output buffer unit 216, the decoding start time control of the 1st system clock count section the 117, the 1st
Portion 118.Except with the 1st system clock count section 117 and the 1st this point of decoding start time control unit 118 and without when
Beyond this point of clock generating unit 130, the 1st processing unit 201# of the variation is in the same manner as the 1st processing unit 201 in embodiment 2
Form.
Figure 22 is the block diagram for the structure for roughly showing the 2nd processing unit 202#.
2nd processing unit 202# has the 2nd tuner section 121, the 2nd demodulation section 122, the 2nd demultiplexing section 123, the 2nd input-buffer
Portion 124, the 2nd lsb decoder the 125, the 2nd output buffer unit 226, the decoding start time control of the 2nd system clock count section the 127, the 2nd
Portion 128.Except with the 2nd system clock count section 127 and the 2nd this point of decoding start time control unit 128 and without when
Beyond this point of clock generating unit 130, the 2nd processing unit 202# of the variation is in the same manner as the 2nd processing unit 202 in embodiment 2
Form.
1st system clock count section the 117, the 1st decoding start time control unit 118, the 2nd system clock count section 127 with
And the 2nd decoding start time control unit 128 it is identical with the content output apparatus 100# of the variation of embodiment 1.
In addition, the 1st input-buffer portion 114 is acted as following buffer：Low speed is carried out in the 1st lsb decoder 115
In the case of reproduction, it will not lose with the data of the content of certain usual speed reception.Equally, the 2nd input-buffer portion 124 makees
Acted for following buffer：In the case where the 2nd lsb decoder 125 carries out low speed reproduction, it will not lose and be led to certain
The data for the content that constant speed rate receives.
In this case, in Figure 19 flow chart, the in step S32 is carried out to the 1st decoding start time control unit 118
The output of the usual speed of the low speed output indication of 1 processing unit 201 and the 1st processing unit 201 in step S35 and step S38 refers to
Show.Also, the 2nd decoding start time control unit 128 is carried out the 2nd processing unit 202 in step S36 low speed output indication,
And the usual speed output indication of the 2nd processing unit 202 in step S38.
As described above, according to the content output apparatus 200 of embodiment 2, the larger feelings of offset between each same content
Under condition, same serial data (Same Scene) can be also accumulated in each output state.Moreover, it is provided with each buffer
The output position micro-adjustment portion 246 that offset is micro-adjusted, thus it is possible to make the offset between 2 contents be zero, Neng Goujin
The completely seamless switching of row.
In embodiment 2, be combined with substantially carry out speed control and make offset narrow down to each buffer data it is big
The processing in small the 1st following stage and output position micro-adjustment portion 246 below carry out the 2nd of the micro-adjustment of outgoing position
The processing in stage, so, it is larger even in offset and cause two output states in be not present same serial data situation
Under, it is zero that can also make offset.
Also, exist when output speed controls software, due to software processing overhead influence and so that only passing through
In the case that speed adjustment can not make outgoing position consistent exactly, it is zero that can also make offset.
And then make the preposterous situation of outgoing position from each processing unit in variation due to software load etc.
Under, because there is provided output position micro-adjustment portion 246, it is zero that can also make offset.
In the embodiment 2 recorded more than, judge whether to export buffer unit 216 the 1st using offset test section 240
Same reception data are stored with the 2nd output buffer unit 226, it is however not limited to this example.For example, output speed controls
Portion 241 can also judge whether to export buffer unit 216 and the 2nd the 1st according to the offset notified from offset test section 240
Same reception data are stored in output buffer unit 226.For example, output speed control unit 241 can also detect from offset
Portion 240 be notified of offset in the case of, in the case that in other words offset test section 240 is able to detect that offset, judge
To store same reception data.Also, output speed control unit 241 can also be judged as leading to from offset test section 240
The offset known is judged as depositing in the case where the 1st output buffer unit 216 and the 2nd is exported in the range of the capacity of buffer unit 226
Same reception data are stored up.
Embodiment 3
Figure 23 is the block diagram of the structure for the content output apparatus 300 for roughly showing embodiment 3.
Content output apparatus 300 has the 1st processing unit 101, the 2nd processing unit 102, offset test section 340, output speed
Control unit 341, receive condition monitoring portion 142, output switching control unit 143, output switching portion 144, reception action instruction unit
145th, offset storage part 347, channel selection instruction unit 348.
Except offset test section 340, output speed control unit 341, offset storage part 347 and channel selection instruction unit 348
In addition, the content output apparatus 300 of embodiment 3 is formed in the same manner as the content output apparatus 100 of embodiment 1.Therefore, under
Face, mainly offset test section 340, output speed control unit 341, offset storage part 347 and channel selection instruction unit 348 are carried out
Explanation.
In addition, the method for reseptance of embodiment 3 is the method performed by content output apparatus 300.
The content output apparatus 100 of embodiment 1 switches to different channels or different service carrying out channel selection operation
, it is necessary to be measured again by the 1st processing unit 101 and the 2nd processing unit 102 again using offset test section 140 in the case of content
The offset of the same content received.Therefore, offset is reduced in the range of some needs the time.
Offset test section 340 is in addition to carrying out with the processing of the identical of embodiment 1, whenever offset is detected,
The offset of corresponding service also to being stored in offset storage part 347 is updated.
Offset between the service for the same content that offset storage part 347 arrives one-time detection is with selecting these each services
The channel selection information associations such as the URL on required broadcast channel number, information on services or internet get up to be stored.
Channel selection instruction unit 348 carries out channel selection to the acceptance division 110 of output speed control unit 341 and the 1st or the 2nd acceptance division 120
Instruction.For example, in the case where user has carried out channel selection operation to input unit (not shown), channel selection instruction unit 348 carries out channel selection
Instruction.In addition, channel selection instruction is carried out to the side for turning into foreground system in the 1st acceptance division 110 and the 2nd acceptance division 120.
Output speed control unit 341 except carry out with the identical of output speed control unit 141 of embodiment 1 handle with
Outside, following handle also is carried out.
Output speed control unit 341 is stored when receiving channel selection instruction from channel selection instruction unit 348 by retrieving offset
Portion 347, judges whether the channel selection information of new selection target is had stored in offset storage part 347, thus judges whether
The channel selection for storage service is carried out.Then, output speed control unit 341 is generating the channel selection for storage service
In the case of operation, the offset between the same content stored is obtained from offset storage part 347.Then, output speed control
Portion 341 processed is according to acquired offset, to the data of the 1st processing unit 101 of progress of clock generation unit 130 or the 2nd processing unit 102
The instruction of output speed.
Receive the clock generation unit 130 of this instruction after the specifying of the data output speed of the 1st processing unit 101 is received,
It is slow from the 1st output with specified speed to being controlled for the data output of the 1st output buffer unit 116 with clock frequency
Deposit the output of portion 116 and receive data.Equally, clock generation unit 130 is receiving specifying for the data output speed of the 2nd processing unit 102
Afterwards, to being controlled for the data output of the 2nd output buffer unit 126 with clock frequency, exported with specified speed from the 2nd
The output of buffer unit 126 receives data.
Then, it is same with embodiment 1, in the offset detected by offset test section 340 in permissible range
In the case of, output speed control unit 341 is indicated clock generation unit 130, thus, handles the 1st processing unit the 101 or the 2nd
The data output speed in portion 102 reverts to common speed.
The content output apparatus 300 of embodiment 3 is formed like that as shown in figure 23, it is however not limited to this structure.Example
Such as, can also form as shown in figure 24.
Figure 24 is the block diagram of the content output apparatus 300# for the variation for roughly showing embodiment 3 structure.
Content output apparatus 300# has the 1st processing unit 101#, the 2nd processing unit 102#, offset test section 340, output
Speed controlling portion 341#, receive condition monitoring portion 142, output switching control unit 143, output switching portion 144, reception action instruction
Portion 145, offset storage part 347, channel selection instruction unit 348.Except the 1st processing unit 101#, the 2nd processing unit 102# and output speed
Beyond control unit 341#, the content output apparatus 300# of the variation structure in the same manner as the content output apparatus 300 of embodiment 3
Into.
Shown in the 1st processing unit 101# and the 2nd processing unit 102# and Figure 14 and Figure 15 in the variation of embodiment 3
The 1st processing unit 101# and the 2nd processing unit 102# in the variation of embodiment 1 are similarly formed.Moreover, output speed control
Portion 341# processed decodes start time control unit 128 to the 1st decoding start time control unit the 118 or the 2nd and indicated, thus, it is possible to
Decoding speed in 1st lsb decoder 115 or the 2nd lsb decoder 125 is changed.
In addition, the 1st input-buffer portion 114 is acted as following buffer：Low speed is carried out in the 1st lsb decoder 115
In the case of reproduction, it will not lose with the data of the content of certain usual speed reception.Equally, the 2nd input-buffer portion 124 makees
Acted for following buffer：In the case where the 2nd lsb decoder 125 carries out low speed reproduction, it will not lose and be led to certain
The data for the content that constant speed rate receives.
Also, in the output speed control flow shown in Fig. 9, step is carried out to the 1st decoding start time control unit 118
Low speed output indication in S12, the output in step S14 is carried out to the 2nd decoding start time control unit 128 and temporarily ceases finger
Show, the usual speed output indication in step S16 is carried out to the 1st decoding start time control unit 118, when starting to the 2nd decoding
Carve the usual speed output indication in the progress step of control unit 128 S18.
As described above, according to the content output apparatus 300 of embodiment 3, output speed control unit 341 just channel selection it
Afterwards, output speed instruction is carried out with reference to the offset stored in offset storage part 347, thus it is possible in the choosing of same content
The offset between 2 contents is eliminated after platform earlier.Therefore, it is possible to increase receive deteriorate when can seamless switching be same content
Chance.In addition, the offset substantial constant between broadcast service, offset will not frequently change, so, this structure is effectively sent out
Wave function.
The content output apparatus 100~300 for the embodiment 1~3 recorded more than, receives DTV on the move
Broadcast, digital radio broadcasting, FM broadcast, AM broadcast or internet streaming when, receive situation deteriorate when automatic alignment
Channel selection is carried out in other services or other channels for broadcasting same program, but it is possible to the same program of seamless switching without interruption
Content.
As digital television broadcasting, the same program between the ISDB-T in South America affiliate and trunk desk at home
There is effect in switching.Also, broadcasted in same channel in the switching between the full section broadcast of same program and single hop broadcast
Also there is effect.And then the radio hookup of each broadcast mode in DVB-T, DVB-T2 and the DVB-H broadcasted centered on Europe
There is effect in same program switching between platform, trunk desk and same logic channel.Also, in Chinese DTMB and CMMB
There is effect in same program switching between affiliate, trunk desk and same logic channel in each broadcast mode.Also,
Have in same program switching between affiliate, trunk desk and same logic channel in the T-DMB of South Korea broadcast mode
Effect.Also, the affiliate, trunk desk and same logic channel in the ATSC and ATSC-M/H in the U.S. each broadcast mode it
Between same program switching in there is effect.
And then not only between same broadcast mode, between DVB-T and DVB-T2, between DTMB and CMMB, ATSC with
Also there is effect in same program switching between ATSC-M/H.And then using the real-time broadcast broadcasted with surface wave and
The stream of internet, when issuing the same program switching between the streaming of same program again in surface wave real-time broadcast and simultaneously
Also there is effect.
And then in radio broadcasting, in various countries' digital radio broadcasting such as ISDB-Tsb, DAB, DRM or HD Radio
Same broadcast standard between same program switching in there is effect.It is also, wide in the simulation radio of FM broadcast, AM broadcast
There is effect in same program switching between the same broadcast standard broadcast.And then between such as DAB and FM or DAB and AM it
Between there is effect in same program switching like that between different broadcast standard.
And then as between T-DMB and DAB or between FM and AM, in mobile digital TV broadcast and radio broadcasting
Between same program switching in there is effect.
Also, also there is effect in the same program switching between the stream radio broadcasting of radio broadcasting and internet
Fruit.
The same section broadcasted respectively between above-mentioned different broadcast modes, between the streaming of terrestrial broadcasting and internet
Between mesh, the offset adjustment in 2 stages of carry out described in larger offset, particularly embodiment 2 generally there are
Structure effectively plays function.
The embodiment 1~3 recorded above is illustrated using content output apparatus 100~300, it is however not limited to
This example.For example, the present invention according to the data exported from output switching portion 144 by with showing the display part of image
(not shown), image display (radiovisor) can be applied to.Also, the present invention passes through with according to from outputting cutting
The data for changing the output of portion 144 export the voice output portion (not shown) of voice, can be applied to instantaneous speech power (radio
Reception device).
Label declaration
100、100#、200、200#、300、300#：Content output apparatus；101、101#、201、201#：1st processing unit；
102、102#、202、202#：2nd processing unit；110、210：1st acceptance division；111：1st tuner section；112：1st demodulation section；
113：1st demultiplexing section；114：1st input-buffer portion；115：1st lsb decoder；116、216：1st output buffer unit；117：1st
System clock count section；118：1st decoding start time control unit；120、220：2nd acceptance division；121：2nd tuner section；122：
2nd demodulation section；123：2nd demultiplexing section；124：2nd input-buffer portion；125：2nd lsb decoder；126、226：2nd output caching
Portion；127：2nd system clock count section；128：2nd decoding start time control unit；130：Clock generation unit；140、240、
340：Offset test section；141、141#、241、241#、341、341#：Output speed control unit；142：Receive condition monitoring
Portion；143：Output switching control unit；144：Output switching portion；145：Reception acts instruction unit；246：Export position micro-adjustment portion；
347：Offset storage part；348：Channel selection instruction unit；160：Processor；161：Memory；162：Switch；163：Process circuit；
170：Tuner；171：Demodulator；172：Demultiplexer；173：Buffer；174：Decoder；175：Buffer；176：Clock
Generator；177：Clock counter；178：Controller.
Claims (15)
1. a kind of reception device, it is characterised in that the reception device has：
1st processing unit, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can
The output speed of 1st reception data is changed；
2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception data, and can
The output speed of 2nd reception data is changed；
Output switching portion, it receives data and the exported from the 2nd processing unit the 2nd in the 1st exported from the 1st processing unit
Switching exports between receiving data；
Offset test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline；With
And
Output speed control unit, it is more than the feelings of threshold value set in advance in the offset detected by the offset test section
Under condition, the 1st processing unit or the 2nd processing unit are controlled, so that the described 1st receives data and the 2nd reception
The output speed ratio common output speed set in advance of an advanced side in data is slow.
2. a kind of reception device, it is characterised in that the reception device has：
1st processing unit, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can
The output speed of 1st reception data is changed；
2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception data, and can
The output speed of 2nd reception data is changed；
Output switching portion, it receives data and the exported from the 2nd processing unit the 2nd in the 1st exported from the 1st processing unit
Switching exports between receiving data；
Offset test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline；With
And
Output speed control unit, it is more than the feelings of threshold value set in advance in the offset detected by the offset test section
Under condition, indicate that the 1st processing unit or the 2nd processing unit temporarily cease and receive data and the 2nd reception from the described 1st
The output of an advanced side in data.
3. reception device according to claim 2, it is characterised in that
The output speed control unit is not receiving data and the 2nd reception number from output switching portion output the described 1st
In the case of an advanced side in, to the 1st processing unit or the 2nd processing unit temporarily cease the finger of output
Show.
4. the reception device described in any one in claims 1 to 3, it is characterised in that
The output speed control unit is below threshold value set in advance in the offset detected by the offset test section
In the case of, the output speed of the 1st processing unit and the 2nd processing unit is turned into the common output set in advance
Speed.
5. the reception device described in any one in Claims 1 to 4, it is characterised in that
1st processing unit, which has, caches the described 1st the 1st output buffer unit for receiving data,
2nd processing unit, which has, caches the described 2nd the 2nd output buffer unit for receiving data,
The output speed control unit becomes to the reading speed of the described 1st output buffer unit and the 2nd output buffer unit
More, thus the output speed of the 1st processing unit and the 2nd processing unit is changed.
6. a kind of reception device, it is characterised in that the reception device has：
1st processing unit, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can
The output speed of 1st reception data is changed；
2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception data, and can
The output speed of 2nd reception data is changed；
Output switching portion, it receives data and the exported from the 2nd processing unit the 2nd in the 1st exported from the 1st processing unit
Switching exports between receiving data；And
Offset test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline,
1st processing unit, which has, temporarily accumulates the described 1st the 1st output buffer unit for receiving data,
2nd processing unit, which has, temporarily accumulates the described 2nd the 2nd output buffer unit for receiving data,
The reception device also has output position micro-adjustment portion, and the output position micro-adjustment portion is to the described 1st output buffer unit
Specified with the described 2nd output buffer unit and read address and cause from the reading address output data,
The output speed control unit is in the described 1st output buffer unit and the 2nd output buffer unit on uncached time shaft
Positioned at the 1st of same position receive data and the 2nd receive data in the case of, to the described 1st output buffer unit and described 2nd defeated
At least any one party gone out in the reading speed of buffer unit is changed, and thus, buffer unit and the described 2nd is exported the described 1st
Export in buffer unit and temporarily receive data and the 2nd reception data positioned at the 1st of same position on depot accumulation time axle,
Temporarily accumulated sometimes in the described 1st output buffer unit and the 2nd output buffer unit in the output position micro-adjustment portion
In the case of the 1st reception data and the 2nd reception data that are located at same position on countershaft, to the described 1st output buffer unit or institute
The 2nd output buffer unit is stated to have specified Offsets the reading of corresponding with the offset detected by the offset test section amount
Location.
7. reception device according to claim 6, it is characterised in that
The output speed control unit temporarily accumulates having time in the described 1st output buffer unit and the 2nd output buffer unit
In the case of the 1st reception data and the 2nd reception data that are located at same position on axle, make at the 1st processing unit and the described 2nd
The output speed in reason portion turns into the common output speed set in advance.
8. reception device according to claim 6, it is characterised in that
The reception device also has clock generation unit, and the clock generation unit is according to the finger from the output speed control unit
Show, the speed of the described 1st output buffer unit and the readout clock of the 2nd output buffer unit is changed.
9. the reception device described in any one in claim 1,2 and 6, it is characterised in that
The reception device also has：
Offset storage part, it stores the offset detected by the offset test section；And
Channel selection instruction unit, it carries out indicating for the channel selection of service to the output speed control unit,
The output speed control unit stores from the channel selection instruction unit in the offset storage part and carries out channel selection instruction
In the case of the offset of service afterwards, according to the offset stored in the offset storage part to the 1st processing unit or
The output speed of 2nd processing unit is changed.
10. the reception device described in any one in claim 1,2 and 6, it is characterised in that
The reception device also has reception action instruction unit, and the reception acts instruction unit in the 1st processing unit and the described 2nd
In the case that the reception situation of the processing unit of the reception data of the generation output switching portion output in processing unit deteriorates, instruction
Another processing unit receives the reception signal of service corresponding with the service of the reception data of output switching portion output.
11. the reception device described in any one in claim 1,2 and 6, it is characterised in that
The reception device also has reception action instruction unit, and the reception acts instruction unit in the 1st processing unit and the described 2nd
In the case that the reception situation of the processing unit of the reception data of the generation output switching portion output in processing unit deteriorates, another
It is another to this when service corresponding with the service of the reception data of output switching portion output is not detected by one processing unit
Individual processing unit indicates scan channel.
12. the reception device described in any one in claim 1,2 and 6, it is characterised in that
The reception device also has output switching control unit, and the output switching control unit is in the 1st processing unit and the described 2nd
In the case that the reception situation of the processing unit of the reception data of the generation output switching portion output in processing unit deteriorates, instruction
The output switching portion switches to another processing unit.
13. a kind of image display, it is characterised in that the image display has：
1st processing unit, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can
The output speed of 1st reception data is changed；
2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception data, and can
The output speed of 2nd reception data is changed；
Output switching portion, it receives data and the exported from the 2nd processing unit the 2nd in the 1st exported from the 1st processing unit
Switching exports between receiving data；
Offset test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline；
Output speed control unit, it is according to the offset detected by the offset test section, to the 1st processing unit and institute
The output speed for stating at least any one party in the 2nd processing unit is changed；And
Display part, it shows image according to the data exported from the output switching portion.
14. a kind of instantaneous speech power, it is characterised in that the instantaneous speech power has：
1st processing unit, it receives data according to the 1st reception signal generation the 1st, continuously exports the 1st reception data, and can
The output speed of 1st reception data is changed；
2nd processing unit, it receives data according to the 2nd reception signal generation the 2nd, continuously exports the 2nd reception data, and can
The output speed of 2nd reception data is changed；
Output switching portion, it receives data and the exported from the 2nd processing unit the 2nd in the 1st exported from the 1st processing unit
Switching exports between receiving data；
Offset test section, it detects the described 1st and receives the offset of data and the 2nd reception data on a timeline；
Output speed control unit, it is according to the offset detected by the offset test section, to the 1st processing unit and institute
The output speed for stating at least any one party in the 2nd processing unit is changed；And
Voice output portion, it exports voice according to the data exported from the output switching portion.
15. a kind of method of reseptance, it is characterised in that comprise the following steps：
Data are received according to the 1st reception signal generation the 1st, continuously export the 1st reception data；
Data are received according to the 2nd reception signal generation the 2nd, continuously export the 2nd reception data；
Received the 1st of the output and switch output between data and the 2nd reception data of the output；
Detect the 1st reception data of the output and the 2nd of the output receives the offset of data on a timeline；And
At least any one party in data and the 2nd reception data is received to the described 1st according to the offset detected
Output speed changed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015107218 | 2015-05-27 | ||
| JP2015-107218 | 2015-05-27 | ||
| PCT/JP2016/053448 WO2016189894A1 (en) | 2015-05-27 | 2016-02-05 | Receiving device, image display device, audio output device and receiving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107615773A true CN107615773A (en) | 2018-01-19 |
| CN107615773B CN107615773B (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680030178.8A Expired - Fee Related CN107615773B (en) | 2015-05-27 | 2016-02-05 | Receiving apparatus and receiving method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6370482B2 (en) |
| CN (1) | CN107615773B (en) |
| DE (1) | DE112016002358B4 (en) |
| WO (1) | WO2016189894A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110855909A (en) * | 2019-11-14 | 2020-02-28 | 广州魅视电子科技有限公司 | Video signal seamless low-delay switching method and system |
| CN111684376A (en) * | 2018-02-06 | 2020-09-18 | 三菱电机株式会社 | Sequence data analysis device, sequence data analysis method, and sequence data analysis program |
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| CN1489309A (en) * | 2002-08-27 | 2004-04-14 | ���µ�����ҵ��ʽ���� | Broadcasting system, receiving equipment and programme with transmitting device and receiving device |
| JP2006270824A (en) * | 2005-03-25 | 2006-10-05 | Pioneer Electronic Corp | Digital broadcast receiver and digital broadcast reception method |
| WO2008117448A1 (en) * | 2007-03-27 | 2008-10-02 | Pioneer Corporation | Reproduction apparatus, reproduction method, reproduction program, and computer readable recording medium |
| JP2011211615A (en) * | 2010-03-30 | 2011-10-20 | Nec Personal Products Co Ltd | Apparatus, system and method for switching tuner |
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| JP4615958B2 (en) | 2004-10-15 | 2011-01-19 | クラリオン株式会社 | Digital broadcast sending device, receiving device, and digital broadcasting system |
| JP2007306363A (en) * | 2006-05-12 | 2007-11-22 | Pioneer Electronic Corp | Digital broadcast receiver |
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2016
- 2016-02-05 DE DE112016002358.8T patent/DE112016002358B4/en active Active
- 2016-02-05 JP JP2017520252A patent/JP6370482B2/en active Active
- 2016-02-05 WO PCT/JP2016/053448 patent/WO2016189894A1/en active Application Filing
- 2016-02-05 CN CN201680030178.8A patent/CN107615773B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1489309A (en) * | 2002-08-27 | 2004-04-14 | ���µ�����ҵ��ʽ���� | Broadcasting system, receiving equipment and programme with transmitting device and receiving device |
| JP2006270824A (en) * | 2005-03-25 | 2006-10-05 | Pioneer Electronic Corp | Digital broadcast receiver and digital broadcast reception method |
| WO2008117448A1 (en) * | 2007-03-27 | 2008-10-02 | Pioneer Corporation | Reproduction apparatus, reproduction method, reproduction program, and computer readable recording medium |
| JP2011211615A (en) * | 2010-03-30 | 2011-10-20 | Nec Personal Products Co Ltd | Apparatus, system and method for switching tuner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111684376A (en) * | 2018-02-06 | 2020-09-18 | 三菱电机株式会社 | Sequence data analysis device, sequence data analysis method, and sequence data analysis program |
| CN111684376B (en) * | 2018-02-06 | 2023-08-18 | 三菱电机株式会社 | Sequence data analysis device, sequence data analysis method, and computer-readable recording medium |
| CN110855909A (en) * | 2019-11-14 | 2020-02-28 | 广州魅视电子科技有限公司 | Video signal seamless low-delay switching method and system |
| CN110855909B (en) * | 2019-11-14 | 2020-07-03 | 广州魅视电子科技有限公司 | Seamless low-delay switching method for video signals |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016189894A1 (en) | 2016-12-01 |
| DE112016002358T5 (en) | 2018-02-22 |
| JP6370482B2 (en) | 2018-08-08 |
| JPWO2016189894A1 (en) | 2017-10-19 |
| DE112016002358B4 (en) | 2019-08-22 |
| CN107615773B (en) | 2020-07-24 |
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