CN110139144A - One kind is based on TV sharing method in smart home - Google Patents
One kind is based on TV sharing method in smart home Download PDFInfo
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- CN110139144A CN110139144A CN201910252615.6A CN201910252615A CN110139144A CN 110139144 A CN110139144 A CN 110139144A CN 201910252615 A CN201910252615 A CN 201910252615A CN 110139144 A CN110139144 A CN 110139144A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 230000002123 temporal effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/26—Speech to text systems
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L17/00—Speaker identification or verification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
-
- 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
- H04N21/439—Processing of audio elementary streams
-
- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/466—Learning process for intelligent management, e.g. learning user preferences for recommending movies
- H04N21/4668—Learning process for intelligent management, e.g. learning user preferences for recommending movies for recommending content, e.g. movies
Abstract
The invention discloses one kind based on TV sharing method in smart home, belongs to smart home field.The present invention uses digital-to-analogue to capture the real time data of TV signal being played on or other useful signal sources first, audio-video signal after conversion is encoded, the TV program information of acquisition is recorded simultaneously, the habit that user watches TV programme is analyzed, pushes and is suitble in user's TV programme to terminal being played on;The voice messaging for acquiring user records the voice of user, realizes the conversion of user speech intelligent control TV program, volume adjustment etc.;Audio, video data after coding divides two-way to be output in terminal.It is packaged into TS packet according to MPEG-2 format all the way, and is forwarded on terminal device by wireless or cable network, the text information, picture and audio-video that the end APP is sent can be inserted on original audio, video data, circuit is output on TV by another way.
Description
Technical field
The invention belongs to smart home fields, and in particular to TV signal acquisition, Video coding, TS stream is packaged and network turns
The technologies such as hair and audio/video decoding.
Background technique
Smart home has developed for many years at home, and with the development of Internet of Things, the application demand of smart home is increasingly enhanced.
In terms of development space, China's smart home industry potential market is huge.Main platform of the TV as home entertaining,
Its important role is played in family life.TV is connected to the network with terminal device, realizes the broadcasting pictures of shared TV
Can be transferred in mobile phone by network technology, user can carry out kitchen cook etc. operation when do not miss splendid moment, pole
The big information for facilitating user is received and is obtained, and has established solid foundation for smart home development.
There are the methods of several typical reception terrestrial broadcasting DTVs or mobile digital TV program in China at present.Machine top
Box can complete the humorous reception of terrestrial broadcasting digital television signal, obtain multiplexed program transport stream and decoded video and audio letter
Number, it is output to the terminal devices such as liquid crystal display and carries out video and audio playback.But set-top box and display terminal are connected by cable
It connects, not Portable belt;And intelligent terminal also can not receiving set up box demodulation video/audio signal.It is finally terrestrial broadcasting number
Mobile television rod.Television rod completes the humorous reception of digital television signal, transport stream is transferred to computer, by the software on computer
Realize video and audio demultiplexing, decoding.But since television rod only makees coprocessor, using receiving larger limitation;Due to TV
Stick only makees coprocessor, and the signal of its demodulation can not be received by smart phone, and application is very limited.Currently, not
A kind of portable equipment can be while freely receiving terrestrial broadcasting digital television signal, but also with record television programme information
And user speech, more intelligentized functions are provided for user.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, realizing that the real-time broadcasting pictures of shared TV can
To be transferred in terminal by network technology, oneself more highlights and user are intelligently suitble to for user's push
Voice control TV, while interactive chat, great convenience user can be exchanged together between user.
One kind of the invention is based on smart home TV sharing method, comprising the following steps:
Step 1 captures TV programme signal being played in real time, and TV programme signal is converted to colour difference signal,
It configures output data and uses different digital coffret standard;
Step 2 receives the text information and/or audio, video data that user terminal sends over simultaneously, and inserts it into
In the TV programme signal of capture, circuit is output on TV;
The TV programme signal that step 3, storage acquire,
And it is sent to cloud, the history based on user watches record, matches to user terminal push and history viewing record
TV programme signal being played on to user terminal;
Step 4, the sound for recording user, identify the sound of user, based on for acoustic control instruction control TV programme
Regulation and/or volume adjustment.
Further, step 1 specifically:
Different TV signals is captured, and different resolution ratio is set for every kind of TV signal, and be converted to not apposition
The digital signal of formula;And user can resolution ratio and signal format based on demand and application scenarios selection TV signal;
Further, in step 2, the text information and different-format text code mode of Chinese and English, Yong Hufa are supported
Different format and bit rate can be set in the voice sent and other audio files.
In addition, TV sharing processing of the invention can also upgrade processing mode in such a way that distal end upgrades.
It further include being encrypted to image file in upgrading processing mode, terminal device is got from server end to be reflected
As file needs be decrypted, check file it is whether intact, be then updated.User, which can choose, to be updated or not
It is updated.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: realizing user different
The TV programme of family are watched in place, do not miss program splendid moment.Message, audio-video can be sent simultaneously, picture is inserted into
The interaction between user is greatly facilitated in the program of live streaming.
Detailed description of the invention
Fig. 1 is sharing application scenarios schematic diagram of the invention in specific embodiment;
Fig. 2 is sharing treatment process schematic diagram of the invention in specific embodiment;
Wherein, OSD is a kind of screen display technology, i.e. On Screen Display;CVBS indicates Composite Video Baseband letter
Number, HDMI indicates high-definition multimedia interface.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this hair
It is bright to be described in further detail.
Referring to Fig. 1, TV sharing method packet TV is shared box (TV Sharing), is connect in a kind of smart home of the invention
Enter equipment and user terminal, it includes processor and trapping module that wherein TV, which shares box,;And trapping module is with wired connection mode
Connect television set;
Referring to fig. 2, specifically share realization process specifically:
Step 1: the processor that TV shares box configures trapping module by two-wire bus mode.Believed according to home videos
Number configuration input signal is carried out, while resolution ratio and frame per second, clock are set.Configuring trapping module output signal format is
YUV, the data captured are serially transferred to processor using BT656 format.BT656 is 8 data transmission, does not need to synchronize
Signal.
Step 2: insertion text information and audio-video during, first with terminal (mobile phone, notebook, the palm
Upper computer etc.) TCP connection is established, wireless network card one is worked after powering under ap mode, and then terminal device is connected to the hot spot
Under, then the router SSID (Service Set Identifier) of family is sent to password and is shared by terminal device
Box shares the wireless network card that box removes connection family again, while the IP address of multicast oneself, after terminal receives the IP of multicast,
With with share box and establish TCP connection.
After establishing connection, sending information information is encoded using GB2312.Voice coding uses AAC coded format.
After TV shares the text code information that box receives transmission, font file is opened, reads and corresponds to from font file
Text dot matrix, be stored in caching, then the size and color of the size of display area, background color, font be set, finally
More new font is shown on TV.
Step 3: configuration processor interface receives yuv format data, is saved in caching, uses property high inside processor
It can hardware H264 coding.Coding parameter is set, H264 coding is carried out to audio-video signal.The channel for capturing vision signal is set
It is 0, path 3, the resolution ratio of Video coding is 720*576, and the frame per second of video is 25, bit rate control method CBR, GOP
It is 60, bit rate 2048, the quantity of B frame is 0, then carries out the video set capture attribute and Video coding attribute
Binding is returned to binding number, finally library function is called to be applied using number.Audio setting process is similar with video process,
Parameter is set are as follows: coding mode AAC, bit rate 32000, capture channel are consistent with video.
Then PES (Packet Elementary is packaged into ES (Elementary Stream) stream got
Stream it) wraps.Wherein, 6 bytes of PES packet beginning are the packet header PES: 3 byte start-code prefix before packet header, for showing one
The beginning of PES packet;4th byte is starting code mark, illustrates initial code type, shows to be video ES in domain, audio ES is still
Data basic flow.Most latter two byte is packet length, illustrates below also how many byte, if length is 0, illustrates PES packet
Length is greater than 64K byte.It is the optional packet header PES after 6 byte packet headers, is finally the payload data of practical transmission ES stream.One
PES packet corresponds to a frame image, and PTS (Decoding Time corresponding with the picture frame should all be set in each PES packet
Stamp the value of) value, DTS (Decoding Time Stamp) can be obtained by the value of PTS.Audio data is packaged into the setting of PES packet
Content is identical.
Since PES pack arrangement is not suitable for transmission, be especially not suitable for the broadcasted application for there are multiple programs in a data flow.
PES packet need to be divided into the smaller data packet of fixed size, i.e. TS (Transport Stream) packet of 188 bytes.TS packet
It is the basic unit of MPEG-2 data stream transmitting.It is packet header and the Payload of 184 bytes of 4 bytes under normal circumstances
payload.Due to containing adaptive field in the header, the packet header of TS packet is at least more than 4 bytes, passes through load list
First start indicator can find the beginning of load.Based on TS packet structure, it is defined as follows in practice:
Sync byte is fixed as 0x47.
Transmission error code indicating bit 0x00.
Load cell origin identification position indicates TS packet payload initial position situation, when having for transport stream packet
When effect load is PES packet data, marker is that 1 expression payload is started with the first character section of PES, and otherwise indicating should
Payload is started with the first character section of PES.Therefore the position is set as 1.
Transmit priority bit 0x00.
PID is the mark of unique instruction TS data packet, and Packet Data is that content is exactly to be determined by PID.Program
The PID of contingency table PAT is 0x0000, and the PID of PMT is 0xFFF, and the PID of H264 is 0x100, and the PID of AAC is 0x101.
Transmission scrambling control field is set as 0x00, and expression does not scramble.
Whether adaptive field control field, 2bit, the field instruction packet header TS rear portion have adaptive field and effectively bear
It carries.Being set as 0x03 indicates existing payload, and has adaptive field, and for empty Bao Eryan, which should be set to
0x01。
Field during connecting technique, 4bit, the field are incremented by with the TS data packet with identical pid value, are reaching most
0 is reset to after big value 15.So being carried out respectively according to different pid values incremental when handling the field.
Adaptive field is generally 8 bytes, behind be 8 flag bits, occupy 1 byte in total, Optional Field according to
Whether the flag bit of front uses PCR (Program Clock Reference), OPCR etc. to be configured.In practical application
It in test process, only carries out using PCR, is configured a PCR every a frame.In digital television broadcasting application, PCR's
Time interval should be not more than 40ms.For PCR for restoring 27MHZ system clock, the interval PCR mistake will lead to the clock of receiving end
Shake, influences picture display time.
TS stream in comprising the table closely related with program information come describe TS stream temporal structure.PAT and PMT belong to
In PSI.The structural information of entire TS stream can be learnt by PAT and PMT, there was only a kind of pat table, PAT in generally all the way TS stream
The PID of the TS packet of table is 0, and the PID of pmt table all in the transport stream of the road Liao Gai is paid in pat table, is found according to these PID
PMT.It is all audio ESs of the program, the PID of video ES and other data ES stream, according to these bases in the load department of pmt table
This stream pid value, the audio-video basic flow that decoding can find the programs are decoded broadcasting.In TS data flow, every
40 TS packets are inserted into one group of PAT and PMT.
During obtaining the parsing that TS packet carries out, first since finding pat table, there is the PID of PMT in PAT packet.PAT
After reading with PMT, user determines two PID of a program, the PID of video to be decoded and audio signal to be decoded
PID PID identical TS packet collection is respectively synthesized video PES packet and audio PES packet, is sent to video during demultiplexing
Decoder.By test, by the way of frame-skipping, image sharpness is improved.Increase ARM-V7A simultaneously, adapts to and more whole
End.
Step 4: realizing infrared bottom layer driving, terminal device sends study order, and bottom software calling interruption is gone to capture red
External signal considers that the infrared signal that remote controler issues will cause signal rebound factor, and setting fixed size infrared data caches
Area every time empties buffer area before capture.Ensure to capture acquisition every time is all new valid data, while terminal is answered
It is bound with the key of setting study.Terminal sends control command infrared module, and bottom software will be caught before using timer
The infrared signal data obtained, which simulates, to be come, and is sent by infrared sending tube.
Step 5: when user wants upgrading, downloading needs the firmware updated from server, sends a command to bottom application.
When being downloaded, version can be first checked first, and whether version information is greater than current version, only when version information is greater than currently
When version, it is then downloaded firmware.Then MD5 is calculated, is compared with the firmware MD5 on server, if
MD5 is identical, then downloading is correct, carries out erasing flash, new firmware is written in Flash.Version information is updated simultaneously to arrive
In the last one subregion of Flash.When wanting to update a firmware, new version information is write using update application program
Enter in firmware.MD5sum is run, * .md5 is generated and is used as verification.
In the present invention, the coding of video is using high-performance H264 coding inside processor.Currently based on ASIC hardware
H264 encoding scheme has been widely used, and the program not only can reduce encoding device volume, reduce power consumption, can also be mentioned
High system stability.For example the MB86H50 of Fuji Tsu, this hardware coder have obvious in power consumption and volume
Advantage, but this hardware coder it is maximum the disadvantage is that can not carry out upgrading and fault restoration, it is even more impossible to carry out function to open up
Exhibition, if necessary to adjust, it is necessary to throw piece production again;Another encoder is this coding based on function of hardware acceleration
Device generally uses double architecture designs of ARM and DSP, such as QL202B, GM8136 family chip, and this encoder generally can be with
Performance boost or functions expanding, the advantage of such encoder are carried out by firmware upgrade or the hardware-accelerated middleware of change
Clearly, that is, device power consumption and volume be ensure that, and can use the function of hardware acceleration of device to carry out H.264
Efficient video coding, it is most important that such device is generally provided for hardware-accelerated SDK development kit, utilizes corresponding API
Function can be carried out flexible and efficient H.264 coding.
The above description is merely a specific embodiment, any feature disclosed in this specification, except non-specifically
Narration, can be replaced by other alternative features that are equivalent or have similar purpose;Disclosed all features or all
Method or in the process the step of, other than mutually exclusive feature and/or step, can be combined in any way.
Claims (4)
1. one kind is based on smart home TV sharing method, which comprises the following steps:
Step 1 captures TV programme signal being played in real time, and TV programme signal is converted to colour difference signal, configuration
Output data uses different digital coffret standard;
Step 2 receives the text information and/or audio, video data that user terminal sends over simultaneously, and inserts it into capture
TV programme signal in, circuit is output on TV;
The TV programme signal that step 3, storage acquire,
And it is sent to cloud, the history based on user watches record, matches just to user terminal push and history viewing record
Broadcasting TV programme signal to user terminal;
Step 4, record user sound, identify the sound of user, based on for acoustic control instruction control TV programme regulation
And/or volume adjustment.
2. the method as described in claim 1, which is characterized in that step 1 specifically:
Different TV signals is captured, and different resolution ratio is set for every kind of TV signal, and be converted to different-format
Digital signal;And user can resolution ratio and signal format based on demand and application scenarios selection TV signal.
3. the method as described in claim 1, which is characterized in that in step 2, support the text information and not apposition of Chinese and English
Different format and bit rate can be set in formula text code mode, the voice and other audio files that user sends.
4. the method as described in claim 1, which is characterized in that the specific processing based on smart home TV sharing method
Mode upgrades processing mode in such a way that distal end upgrades.
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CN201810275589 | 2018-03-30 | ||
CN2018102755894 | 2018-03-30 |
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CN110139144A true CN110139144A (en) | 2019-08-16 |
CN110139144B CN110139144B (en) | 2020-10-23 |
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CN201910252615.6A Expired - Fee Related CN110139144B (en) | 2018-03-30 | 2019-03-29 | Television sharing method based on intelligent home |
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Cited By (1)
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CN111131858A (en) * | 2019-12-30 | 2020-05-08 | 杭州当虹科技股份有限公司 | Method for fixing code rate based on TS video PID |
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