Frame transmission method for moving and hand-held wireless videocast

A technology for wireless TV and frame transmission, applied in the field of wireless TV transmission and wireless TV broadcasting, which can solve the problems of not considering the problem of mobile power consumption and the inability to use wireless TV broadcasting, etc.

Inactive Publication Date: 2007-03-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF0 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of scheme cannot be used in the field of handheld wireless TV broadcasting because it does not take into account the power consumption of mobile, especially portable receiving terminals.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frame transmission method for moving and hand-held wireless videocast
  • Frame transmission method for moving and hand-held wireless videocast
  • Frame transmission method for moving and hand-held wireless videocast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0094] The transmission packet forming module 1 of the multi-program multi-code stream extension in the present invention corresponds to the pointer chain and the data frame formation 2 in the transmission frame can be realized by application software programming in a computer, and can also be realized by a DSP (DigitalSignal Processor).

[0095] The following takes the system modulation mode as QPSK and the encoding rate as 1 / 2 as an example to illustrate the specific implementation process of the two modules of the multi-program multi-stream extension transmission packet formation module 1 corresponding to the pointer chain and the data frame formation 2 in the transmission frame: First, add 7 bytes before each standard MPEG-2 transport packet from the multiplexer or any other transport packet with a 188-packet format as shown in Figure 4 to convert it into an extended transport packet, and then store it for 4 seconds All extended transmission packets contained in the frame, ...

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

No PUM Login to view more

Abstract

This invention provides one transmission frame method by use of mobile and handles wireless television, wherein, signal channel codes adopt LDPC codes type in high speed to correct worse signal environment and Doppler error. This invention provides one time division transmission frame for different list, which through transmission package front five bit with service type, time, and simultaneous index to speed up system and process speed to lower receive end device complexity to lower consumption to receive device.

Description

technical field [0001] The invention relates to the field of wireless television transmission, especially in the field of transmission of wireless television broadcasts for mobile and handheld reception. Background technique [0002] In modern communication, the means of communication transmission are mainly optical fiber, satellite, digital microwave, terrestrial wireless broadcasting, etc. At present, China's digital TV can be divided into three types according to the signal transmission mode: terrestrial wireless transmission digital TV (terrestrial digital TV), satellite transmission digital TV (satellite digital TV), and cable transmission digital TV (cable digital TV). Mobile and handheld wireless TV is an important application of terrestrial digital TV. In terms of application requirements, digital TV terrestrial broadcasting requires mobile and portable receiving functions. [0003] At present, the terrestrial digital TV transmission standards / schemes at home and a...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/52
Inventor 朱维乐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap