CN1595975A - Digital television broadcasting system based on MPEG-1 - Google Patents
Digital television broadcasting system based on MPEG-1 Download PDFInfo
- Publication number
- CN1595975A CN1595975A CN 200310111933 CN200310111933A CN1595975A CN 1595975 A CN1595975 A CN 1595975A CN 200310111933 CN200310111933 CN 200310111933 CN 200310111933 A CN200310111933 A CN 200310111933A CN 1595975 A CN1595975 A CN 1595975A
- Authority
- CN
- China
- Prior art keywords
- mpeg
- broadcast
- digital television
- receiving system
- demodulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000926 separation method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000004927 fusion Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 2
- 101000969688 Homo sapiens Macrophage-expressed gene 1 protein Proteins 0.000 description 1
- 102100021285 Macrophage-expressed gene 1 protein Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention is a digital television broadcasting system based on MPEG-1, the system is made up of network, digital television broadcasting system based on MPEG-1 through the network and digital television broadcasting receiving system based on MPEG-1. The transmitting system includes MPEG-1 coder, disturber, IP data flow complex device and modulator, the receiving system includes resonance device, demodulator, TS data flow demultiplexing device, and MPEG-1 decoder. The cost is low, and it can display program source with MPEG-1 format with IP mode.
Description
[technical field]
The present invention relates to a kind of digital television broadcasting system, relate in particular to a kind of digital television broadcasting system based on the MPEG-1 technology.
[background technology]
MPEG-1 was formulated in 1992, was for the technical grade standard designs, and it is applicable to the equipment of different bandwidth, as CD-ROM, Video-CD, CD-R etc.It is primarily aimed at the international standard of the digital storage media moving image and the sound accompaniment coding thereof of the following data transmission rate of 1.5Mbps, it is used for the synchronous and colored motion video of storage on CD-ROM, can be optimized for intermediate resolution, and under its optimization pattern, (for the TSC-system formula is 352 * 240 to adopt SIF standard DIF, for pal mode is 352 * 288) image compress, transmission rate is 1.5Mbps, per second can be play 30 frames, have CD (referring to compact disc) tonequality, quality scale is basic suitable with VHS.
The code rate of MPEG-1 reaches as high as 4-5Mbps, but along with the raising of speed, its decoded image quality decreases.MPEG-1 adopts 4: 1: 1 double sampling rate to color difference components, is intended to reach the VRC quality, and its video compression ratio is 26: 1.
MPEG-1 has now become a subclass of conventional video standard, and this subclass is called CPB stream.It also is used to the video transmission on the Digital Telephone Network simultaneously, as Asymmetrical Digital Subscriber Line (ADSL), and video request program (VOD), and education network etc., so MPEG-1 can be used as recording medium or transmission of audio on INTERNET.
Abroad, the Moving Picture Experts Group-2 that digital TV Broadcasting Techniques adopts, the digital television broadcasting system based on the MPEG-2 video compression standard has had a large number of users in western countries now.Digital television broadcasting system comprises wired digital television broadcasting system, digital video broadcast-satellite system, ground system of digital television broadcast etc.
Current, the existing both at home and abroad cable digital TV broadcast system based on the MPEG-2 technology as shown in Figure 1, Figure 1 shows that the embodiment system block diagram of digitlization HFC (Hybrid Fiber/CoaxNetwork, HFC network) television system with 8MHz bandwidth for transmission 6-8 cover pal television program.
The partly total 6-8 cover of signal source PAL program, it adopts MPEG-2 video encoder 1 to carry out video compression coding and handles, this MPEG-2 video encoder 1 meets the MPEG-2/DVB standard, can support multiple image resolution ratio (PAL:720 * 576, NTSC:720 * 480), support PAL and ntsc television standard.
The MPEG-2 TS signal bit stream that digital satellite signal transponder 2 is received digital satellite is converted to high-speed serial signals (DVBASI interface), sends into DVB multiplexer 3 again.
DVB multiplexer 3 meets the MPEG-2/DVB standard, can insertion inscribe a control information (ECM) or utilize control word (CW) scrambling in the MPEG-2 packet, and this is finished by CA management system 4.
QAM modulator 5 is modulated to radiofrequency signal with digital signal.Unidirectional or the two-way cable TV network network that hfc plant 6 is made up of optical fiber and coaxial cable and optical sender, optical receiver, amplifier, branch distributor, subscriber box etc.
DVB-C digital receiver 7 is set-top box that meet the DVB-C standard, and it forms (figure does not show) by three parts.Tuner is input as the CATV signal, is output as intermediate-freuqncy signal.Qam demodulator is reduced to digital signal with the intermediate-freuqncy signal demodulation, remove simultaneously the RS coding, again the TS data flow is sent TS data flow demodulation multiplexer, obtain the MPEG-2 compressed encoding signal of a certain programs, send the MPEG-2 decoder at last, can obtain NTSC/PAL NTSC television system NTSC Voice ﹠ Video signal, the Voice ﹠ Video signal directly send television set 8 to watch.
But above-mentioned cable digital TV broadcast system based on the MPEG-2 technology is owing to adopt the MPEG-2 source coding technique, so compression efficiency is lower than adopting the MPEG1 technology; In addition, after nineteen ninety-five, the IP technology has obtained widely using, and many program source are that the form with MPEG-1 leaves in the computer, and therefore above-mentioned cable digital TV broadcast system based on the MPEG-2 technology can not use the program source of the form of MPEG-1 not with the IP technological incorporation.
[summary of the invention]
The object of the present invention is to provide a kind of digital television broadcasting broadcast system of the IP of fusion technology based on MPEG-1.
Another object of the present invention is to provide a kind of digital television broadcast receiving system of the IP of fusion technology based on MPEG-1.
A further object of the present invention is to provide a kind of digital television broadcasting system based on MPEG-1 of the IP of fusion technology.
For realizing purpose of the present invention, the technical solution adopted in the present invention is: a kind of digital television broadcasting broadcast system based on MPEG-1 is provided, and it comprises MPEG-1 encoder, scrambling machine, IP traffic multiplexer and modulator that output is linked in sequence.
For realizing another object of the present invention, the technical solution adopted in the present invention is: a kind of digital television broadcast receiving system based on MPEG-1 is provided, and it comprises tuner, demodulator, TS data flow demodulation multiplexer, descrambling machine and MPEG-1 decoder that output is linked in sequence.
For realizing a further object of the present invention, the technical solution adopted in the present invention is: a kind of digital television broadcasting system based on MPEG-1 is provided, and should be based on the digital television broadcasting system of MPEG-1 by network and above-mentionedly forming of being connected by this network based on the digital television broadcasting broadcast system of MPEG-1 with based on the digital television broadcast receiving system of MPEG-1.
The invention has the beneficial effects as follows, digital television broadcasting system based on MPEG-1 of the present invention is owing to adopt the MPEG-1 source coding technique, therefore compare and adopt the digital television broadcasting system of MPEG-2 source coding technique that lower cost is arranged, can be widely used in the rural area of China; In addition, because digital television broadcasting system based on MPEG-1 of the present invention has merged the IP technology, therefore can use the program source of form of the MPEG-1 of IP mode.
[description of drawings]
Fig. 1 is existing cable digital TV broadcast system block diagram based on the MPEG-2 technology.
Fig. 2 is the cable digital TV broadcasting broadcast system block diagram based on MPEG-1 that the IP technology is merged in the present invention.
Fig. 3 is the cable digital TV broadcast receiver system block diagram based on MPEG-1 that the IP technology is merged in the present invention.
Fig. 4 is the cable digital TV broadcast system block diagram based on MPEG-1 that the IP technology is merged in the present invention.
[embodiment]
Seeing also Fig. 2, is the cable digital TV broadcasting broadcast system based on MPEG-1 that the IP technology is merged in the present invention.This broadcast system comprises MPEG-1 encoder 9, DES scrambling machine 10, IP traffic multiplexer 12 and the QAM modulator 13 that output is linked in sequence.These devices all are integrated in the cabinet.
The partly total about 30 cover PAL programs of signal source, it carries out video compression coding by MPEG-1 encoder 9 handles, and becomes the MPEG-1 video flowing of IP mode; Then the MPEG-1 video flowing of IP mode being sent to DES scrambling machine 10 adopts the DES modes to encrypt by management system 11 controls; The MPEG-1 video flowing of the IP mode after will encrypting then is sent to IP traffic multiplexer 12 and the MPEG-1 video flowing of IP mode is broken into the TS data flow is sent to QAM modulator 13; By QAM modulator 13 digital signal being modulated to radiofrequency signal again transmits in hfc plant 14.Unidirectional or the two-way cable TV network network that hfc plant 14 is made up of optical fiber and coaxial cable and optical sender, optical receiver, amplifier, branch distributor, subscriber box etc.
Seeing also Fig. 3, is the cable digital TV broadcast receiver system based on MPEG-1 that the IP technology is merged in the present invention.This receiving system comprises tuner 15, qam demodulator 16, TS data flow demodulation multiplexer 17, DES descrambling machine 18 and the MPEG-1 decoder 19 that output is linked in sequence.These devices all are integrated in the cabinet.
Seeing also Fig. 4, is the cable digital TV broadcast system based on MPEG-1 that the IP technology is merged in the present invention.This cable digital TV broadcast system is made up of with the above-mentioned cable digital TV broadcasting broadcast system and the cable digital TV broadcast receiver system that are connected by hfc plant 14 hfc plant 14.The signal source of about 30 cover PAL programs is sent to hfc plant 14 transmission through above-mentioned cable digital TV broadcasting broadcast system, be sent to above-mentioned cable digital TV broadcast receiver system via hfc plant 14 again, at last the Voice ﹠ Video signal be sent to television set 20 and watch.
The digital television broadcasting system based on MPEG-1 of fusion IP technology of the present invention comprises wired digital television broadcasting system, three kinds of modes of wireless ground system of digital television broadcast and digital video broadcast-satellite system.If wireless ground digital television broadcast receiving system and digital video broadcast-satellite receiving system then increase antenna compared to above-mentioned cable digital TV broadcast system, receive high-frequency signal down by antenna, be sent to tuner, through double conversion, become the fundamental frequency signal of 8MHz, deliver to demodulator again.The modulator and demodulator that wireless ground system of digital television broadcast adopted is to adopt the COFDMT code encoding/decoding mode, and the modulator and demodulator that the digital video broadcast-satellite system is adopted is to adopt the QPSK code encoding/decoding mode.
The digital television broadcasting system based on MPEG-1 of fusion IP technology of the present invention is compared with the present digital television broadcasting system based on the MPEG-2 technology, the efficient of the source encoding of broadcast television signal can be improved 2 times based on the digital television broadcasting system of MPEG-1 technology, in the cable television channels of an original 8MHz, as with existing former digital television broadcasting system based on the MPEG-2 compress technique, can transmit the TV programme of the single-definition about 6 covers, or transmit the TV programme of high definition about a cover, if and adopt the MPEG-1 compress technique, then can transmit the TV programme of the VHS definition about the many covers of 15-18, improved the utilization ratio of TV, lower cost has also been arranged simultaneously frequency resource.
Claims (10)
1. digital television broadcasting broadcast system based on MPEG-1, it comprises scrambling machine and modulator, it is characterized in that: this broadcast system also comprises MPEG-1 encoder and IP traffic multiplexer, the output of this MPEG-1 encoder is connected with the input of this scrambling machine, the output of this scrambling machine is connected with the input of this IP traffic multiplexer, the output of this IP traffic multiplexer is connected with the input of this modulator, the output of this modulator is connected with network, and this scrambling machine is controlled its encryption to signal by management system.
2. broadcast system as claimed in claim 1 is characterized in that if this broadcast system is broadcasted broadcast system as cable digital TV, then this modulator adopts the QAM modulator; If this broadcast system is as wireless ground digital television broadcast broadcast system, then this modulator adopts the COFDMT modulator; If this broadcast system is as the digital video broadcast-satellite broadcast system, then this modulator adopts qpsk modulator.
3. broadcast system as claimed in claim 2 is characterized in that this scrambling machine is to adopt the DES mode to encrypt.
4. digital television broadcast receiving system based on MPEG-1, it comprises tuner, descrambling machine and demodulator, it is characterized in that: this receiving system also comprises TS data flow demodulation multiplexer and MPEG-1 decoder, the output of this tuner is connected with the input of this demodulator, the output of this demodulator is connected with the input of this TS data flow demodulation multiplexer, the output of this TS data flow demodulation multiplexer is connected with the input of this descrambling machine, the output of this descrambling machine is connected with the input of this MPEG-1 decoder, and the output of this MPEG-1 decoder is connected with television set.
5. receiving system as claimed in claim 4, it is characterized in that as if this receiving system as wireless ground digital television broadcast receiving system or digital video broadcast-satellite receiving system, then this receiving system also comprises antenna, and this antenna is connected with the input of this tuner.
6. receiving system as claimed in claim 5, it is characterized in that if this receiving system as the cable digital TV broadcast receiver system, then this demodulator adopts qam demodulator; If this receiving system is as wireless ground digital television broadcast receiving system, then this demodulator adopts the COFDMT demodulator; If this receiving system is as the digital video broadcast-satellite receiving system, then this demodulator adopts qpsk demodulator.
7. receiving system as claimed in claim 6 is characterized in that this descrambling machine is to adopt the DES mode to decipher.
8. digital television broadcasting system based on MPEG-1, it is characterized in that: this system comprises network and claim 1 that is connected by this network or 3 described digital television broadcasting broadcast system and claim 4 or 7 described digital television broadcast receiving systems based on MPEG-1 based on MPEG-1.
9. the digital television broadcasting system based on MPEG-1 as claimed in claim 8 is characterized in that this descrambling machine adopts the mode of separation between machine and card.
10. the digital television broadcasting system based on MPEG-1 as claimed in claim 8 is characterized in that the device of this digital television broadcasting broadcast system all is integrated in the cabinet, and the device of this digital television broadcast receiving system all is integrated in the cabinet except that antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310111933XA CN100373941C (en) | 2003-10-22 | 2003-10-22 | Digital television broadcasting system based on MPEG-1 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310111933XA CN100373941C (en) | 2003-10-22 | 2003-10-22 | Digital television broadcasting system based on MPEG-1 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1595975A true CN1595975A (en) | 2005-03-16 |
| CN100373941C CN100373941C (en) | 2008-03-05 |
Family
ID=34661378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200310111933XA Expired - Lifetime CN100373941C (en) | 2003-10-22 | 2003-10-22 | Digital television broadcasting system based on MPEG-1 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100373941C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356752B (en) * | 2006-01-05 | 2011-06-15 | Kddi株式会社 | Broadcast content transmission device, broadcast content transmission system and broadcast content transmission method |
| CN102282844A (en) * | 2009-02-06 | 2011-12-14 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| CN102301704A (en) * | 2009-02-06 | 2011-12-28 | Lg电子株式会社 | Device for sending and receiving signals and method for sending and receiving signals |
| CN101742302B (en) * | 2008-11-26 | 2012-01-04 | 中国科学院微电子研究所 | Multi-mode mpeg system layer demultiplexing method |
| CN102292984B (en) * | 2009-03-03 | 2013-12-11 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| CN102301705B (en) * | 2009-01-29 | 2014-02-12 | Lg电子株式会社 | Device for sending and receiving signals and method for sending and receiving signals |
| CN103621059A (en) * | 2011-08-23 | 2014-03-05 | 艾科星科技公司 | Storing multiple instances of content |
| CN102308577B (en) * | 2009-02-11 | 2015-07-01 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| US9489982B2 (en) | 2012-03-15 | 2016-11-08 | Echostar Technologies L.L.C. | Television receiver storage management |
| US9521440B2 (en) | 2012-03-15 | 2016-12-13 | Echostar Technologies L.L.C. | Smartcard encryption cycling |
| US9628838B2 (en) | 2013-10-01 | 2017-04-18 | Echostar Technologies L.L.C. | Satellite-based content targeting |
| US9756378B2 (en) | 2015-01-07 | 2017-09-05 | Echostar Technologies L.L.C. | Single file PVR per service ID |
| US9918116B2 (en) | 2012-11-08 | 2018-03-13 | Echostar Technologies L.L.C. | Image domain compliance |
| US10104420B2 (en) | 2011-08-23 | 2018-10-16 | DISH Technologies, L.L.C. | Automatically recording supplemental content |
| US10231009B2 (en) | 2011-08-23 | 2019-03-12 | DISH Technologies L.L.C. | Grouping and presenting content |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3794050B2 (en) * | 1996-03-15 | 2006-07-05 | ソニー株式会社 | Data transmission apparatus and method and data receiving apparatus |
| US5987518A (en) * | 1996-10-28 | 1999-11-16 | General Instrument Corporation | Method and apparatus for communicating internet protocol data over a broadband MPEG channel |
| AU6791100A (en) * | 1999-08-20 | 2001-03-19 | General Instrument Corporation | System and method for facilitating transmission of ip data over digital mpeg networks |
| WO2002015467A1 (en) * | 2000-08-08 | 2002-02-21 | Semiconductores Investigación Y Diseño, S.A. (Sidsa) | Methods and systems for the broadcast internet, audio or video contents without prior agreement with the service provider or return channel |
| CA2358607A1 (en) * | 2000-10-24 | 2002-04-24 | General Instrument Corporation | Packet identifier (pid) aliasing for a broadband audio, video and data router |
| US6963590B1 (en) * | 2001-06-11 | 2005-11-08 | Advanced Micro Devices, Inc. | Apparatus for delivery of multiple media data streams, and method therefor |
-
2003
- 2003-10-22 CN CNB200310111933XA patent/CN100373941C/en not_active Expired - Lifetime
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356752B (en) * | 2006-01-05 | 2011-06-15 | Kddi株式会社 | Broadcast content transmission device, broadcast content transmission system and broadcast content transmission method |
| CN101742302B (en) * | 2008-11-26 | 2012-01-04 | 中国科学院微电子研究所 | Multi-mode mpeg system layer demultiplexing method |
| CN102301705B (en) * | 2009-01-29 | 2014-02-12 | Lg电子株式会社 | Device for sending and receiving signals and method for sending and receiving signals |
| CN102282844A (en) * | 2009-02-06 | 2011-12-14 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| CN102301704A (en) * | 2009-02-06 | 2011-12-28 | Lg电子株式会社 | Device for sending and receiving signals and method for sending and receiving signals |
| CN102282844B (en) * | 2009-02-06 | 2013-10-16 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| CN102301704B (en) * | 2009-02-06 | 2014-04-23 | Lg电子株式会社 | Device for sending and receiving signals and method for sending and receiving signals |
| CN103957373B (en) * | 2009-02-06 | 2018-01-19 | Lg电子株式会社 | Method for the device sent and received signal and for sending and receiving signal |
| CN102308577B (en) * | 2009-02-11 | 2015-07-01 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| US9647730B2 (en) | 2009-03-03 | 2017-05-09 | Lg Electronics Inc. | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| CN102292984B (en) * | 2009-03-03 | 2013-12-11 | Lg电子株式会社 | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| US8670494B2 (en) | 2009-03-03 | 2014-03-11 | Lg Electronics Inc. | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
| US9894406B2 (en) | 2011-08-23 | 2018-02-13 | Echostar Technologies L.L.C. | Storing multiple instances of content |
| CN103621059A (en) * | 2011-08-23 | 2014-03-05 | 艾科星科技公司 | Storing multiple instances of content |
| US11146849B2 (en) | 2011-08-23 | 2021-10-12 | DISH Technologies L.L.C. | Grouping and presenting content |
| US10659837B2 (en) | 2011-08-23 | 2020-05-19 | DISH Technologies L.L.C. | Storing multiple instances of content |
| US10231009B2 (en) | 2011-08-23 | 2019-03-12 | DISH Technologies L.L.C. | Grouping and presenting content |
| US10104420B2 (en) | 2011-08-23 | 2018-10-16 | DISH Technologies, L.L.C. | Automatically recording supplemental content |
| CN103621059B (en) * | 2011-08-23 | 2018-07-13 | 艾科星科技公司 | Multiple examples of storage content |
| US10171861B2 (en) | 2012-03-15 | 2019-01-01 | DISH Technologies L.L.C. | Recording of multiple television channels |
| US9489982B2 (en) | 2012-03-15 | 2016-11-08 | Echostar Technologies L.L.C. | Television receiver storage management |
| US9854291B2 (en) | 2012-03-15 | 2017-12-26 | Echostar Technologies L.L.C. | Recording of multiple television channels |
| US9781464B2 (en) | 2012-03-15 | 2017-10-03 | Echostar Technologies L.L.C. | EPG realignment |
| US9521440B2 (en) | 2012-03-15 | 2016-12-13 | Echostar Technologies L.L.C. | Smartcard encryption cycling |
| US9489981B2 (en) | 2012-03-15 | 2016-11-08 | Echostar Technologies L.L.C. | Successive initialization of television channel recording |
| US10582251B2 (en) | 2012-03-15 | 2020-03-03 | DISH Technologies L.L.C. | Recording of multiple television channels |
| US9549213B2 (en) | 2012-03-15 | 2017-01-17 | Echostar Technologies L.L.C. | Dynamic tuner allocation |
| US9918116B2 (en) | 2012-11-08 | 2018-03-13 | Echostar Technologies L.L.C. | Image domain compliance |
| US9628838B2 (en) | 2013-10-01 | 2017-04-18 | Echostar Technologies L.L.C. | Satellite-based content targeting |
| US9756378B2 (en) | 2015-01-07 | 2017-09-05 | Echostar Technologies L.L.C. | Single file PVR per service ID |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100373941C (en) | 2008-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20050087837A (en) | Method and system for delivering dual layer hdtv signals through broadcasting and streaming | |
| US20060020995A1 (en) | Fast channel change in digital media systems | |
| CN100373941C (en) | Digital television broadcasting system based on MPEG-1 | |
| CN1706190A (en) | Cable television system and method for upgrading compatible bandwidth using embedded digital channels | |
| CN1518832A (en) | System and data format for providing seamless stream switching in digital video decoder | |
| US8799940B2 (en) | Method of coding a scalable video stream destined for users with different profiles | |
| US6345388B1 (en) | Method and apparatus for transmitting and receiving television signal | |
| CN1717935A (en) | I-picture insertion on request | |
| CN105430510A (en) | Video on demand method, gateway, smart terminal and video on demand system | |
| CN101374210A (en) | Digital TV time-shifting method, system and set-top box | |
| CN1863285A (en) | Device for implementing one set-top-box to support multi-television sets | |
| KR100915845B1 (en) | Television receiver and video signal reception method | |
| WO2005076617A1 (en) | Multimedia terminal | |
| KR20050049226A (en) | Home gateway system to provide the set-top boxs with pvr service, and pvr service method using it | |
| KR100612316B1 (en) | Multimedia System Using MPEG Transport Stream | |
| CN1268134C (en) | Digital television broadcasting system | |
| CN2648737Y (en) | Decoding code translator based on digital video broadcasting | |
| MXPA06002255A (en) | Apparatus and method for converting media stream for multimedia service in dab system. | |
| US20100214471A1 (en) | An adapter for use with a digital to analogue television signal decoder | |
| CA2406714A1 (en) | Universal digital broadcast system and methods | |
| KR100933054B1 (en) | Broadcast signal transmission and reception method providing high quality video service | |
| KR20040061254A (en) | Digital broadcasting receiver and internet broadcasting service method | |
| CN1545307A (en) | Method for demanding program on data network using mobile telephone or line telephone | |
| KR101194823B1 (en) | Apparatus and Method for Reducing Zapping Time in Digital Broadcasting Using Additional Channel | |
| CN102263675B (en) | Monitoring device and method of HFC (hybrid fiber coaxial cable) network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an Hengxin Autocontrol Co.,Ltd. Assignor: EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. Contract fulfillment period: 2008.10.20 to 2013.10.19 Contract record no.: 2009610000114 Denomination of invention: Digital television broadcasting system based on MPEG-1 Granted publication date: 20080305 License type: Exclusive license Record date: 20091204 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.20 TO 2013.10.19; CHANGE OF CONTRACT Name of requester: XI'AN HENGXIN AUTOMATION CONTROL CO., LTD. Effective date: 20091204 |
|
| C56 | Change in the name or address of the patentee |
Owner name: YANXIANG INTELLIGENT TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENGZHEN EVOC INTELLIGENT TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518057 Guangdong city of Shenzhen province Nanshan District high in the four EVOC Technology Building No. 31 Patentee after: EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 518040 Guangdong city of Shenzhen province Che Kung Temple Tianan Digital City Tienhsiang building 10B Patentee before: SHENZHEN EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191205 Address after: 226000 No. 118, city road, Nantong, Jiangsu Patentee after: NANTONG EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 518057 Guangdong city of Shenzhen province Nanshan District high in the four EVOC Technology Building No. 31 Patentee before: EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. Document name: Notification of Passing Examination on Formalities |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080305 |