Method, apparatus and system for transmitting wireless digital TV-set and broadcast
A digital television broadcasting and wireless technology, which is applied in the parts of television systems, televisions, color televisions, etc., can solve the problem of increasing the cost and complexity of network construction, increasing the cost and complexity of network construction, and detrimental to the promotion of terrestrial digital television broadcasting technology. and application issues
Active Publication Date: 2009-07-08
HUAWEI TECH CO LTD
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If in a certain area, mobile terminals supporting multi-carrier demodulation and mobile terminals supporting single-carrier demodulation both receive signals, two transmitters supporting multi-carrier modulation and single-carrier modulation need to be established in the area , which will inevitably lead to an increase in the cost and complexity of building a network in the region, which is not conducive to the promotion and application of terrestrial digital TV broadcasting technology
[0006] It can be seen that in the prior art, there is no wireless digital TV broadcasting transmission method, equipment and wireless digital TV broadcasting method, equipment and wireless digital TV broadcasting method that can not increase the cost and complexity of network construction, but also support multi-carrier modulation technology and single-carrier modulation technology at the same time. television broadcasting system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0060] The basic idea of the present invention is to perform multi-carrier modulation and single-carrier modulation on the video transmission stream respectively to obtain multi-carrier frames and single-carrier frames, and then time-division multiplex the multi-carrier frames and single-carrier frames to obtain and output the transmitter transmission frame / superframe.
[0061] figure 1 A flowchart for implementing the scheme of the present invention is shown. Such as figure 1 As shown, the present invention realizes the method for wireless digital television broadcast transmission and comprises the following steps:
[0062] Step 101: Demultiplex the video transport stream according to the program identifier (PID), and separate the s...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention provides a wireless digital TV broadcast transmission method, equipment and a wireless digital TV broadcast system, the key of which is that the video transmission stream is respectively processed by a multi-carrier link processing method and a single-carrier link processing method, and then the obtained Multi-carrier frames and single-carrier frames are time-division multiplexed. When realizing wireless digital TV broadcasting, the wireless digital TV broadcasting transmitter first demultiplexes the video transmission stream according to the program logo, and separates the single-carrier modulated video transmission stream and the multi-carrier modulated video transmission stream; then according to the multi-carrier modulation link The processing method processes the multi-carrier modulated video transmission stream into multi-carrier frames, and processes the single-carrier modulated video transmission stream into single-carrier frames according to the single-carrier modulation link processing method; then time-division multiplexes the multi-carrier frames and single-carrier frames Launch it again. By applying the scheme of the present invention, the purpose of being compatible with multi-carrier modulation technology and single-carrier modulation technology can be achieved, and the requirement of practical application can be met.
Description
technical field [0001] The present invention relates to wireless digital TV broadcast technology, in particular to a wireless digital TV broadcast transmitting method, equipment and wireless digital TV broadcast system. Background technique [0002] With the development of digital technology, the wireless digital TV broadcast transmission system can provide rich digital broadcast TV programs to user terminals. At present, the most widely used technology is terrestrial digital mobile phone TV technology (DVB-H), and the terrestrial TV transmission standard that is being formulated mainly includes terrestrial digital TV broadcasting transmission system (DMB-T) and terrestrial advanced digital TV broadcasting system ( ADTB-T) two options. [0003] But no matter what kind of terrestrial digital mobile phone TV technology, the method of wireless digital TV broadcast transmission is similar, generally can be divided into two wireless digital TV broadcast transmission methods: the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/24H04N5/38H04L27/26H04N7/169H04M11/08
Inventor 李毅
Owner HUAWEI TECH CO LTD