Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for testing transmission channel and receiver using said method

A technology of channel and channel width, which is applied in the field of detection channel and can solve the problem of long scanning

Inactive Publication Date: 2003-04-23
INTERDIGITAL CE PATENT HLDG
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For satellite decoders, the receiving band to be scanned, for example, can be 1GHz, and such scanning is relatively long

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
  • Method for testing transmission channel and receiver using said method
  • Method for testing transmission channel and receiver using said method
  • Method for testing transmission channel and receiver using said method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 Represents satellite TV transmission and reception equipment, which includes an antenna 1 equipped with a low-noise block 2, usually denoted as LNB, a satellite decoder 3 and a TV set 4. LNB2 performs the conversion of the transmission band used by one or more satellites to an intermediate frequency band, for example between 950 and 2150 MHz. The satellite decoder 3 receives the signal from the LNB 2 through the coaxial cable 5 and supplies the television signal to the television set 4 through the connection cable 6 .

[0026] The satellite decoder 3 performs channel selection in the intermediate frequency band, and then demodulates and decodes the useful information of the channel, so that, on the one hand, the TV signal matching the TV set 4 is reconstructed, and on the other hand, the service dedicated to the satellite program distribution operator is updated. data.

[0027] The model of satellite decoder 3 is shown in figure 2 , figure 2 The model of ...

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

The invention reduces the time required for automatically searching for channels on a device receiving channels of various widths. The invention proposes a channel detection process which carries out successive passes with frequency spacings corresponding to channels of a specific width. During each pass, only the channels corresponding to the specific width are searched for. The invention also pertains to a multichannel reception device comprising the means required for the operation of the process.

Description

technical field [0001] The invention relates to a method for detecting frequency channels, used in a receiving device, performing a frequency scan of the transmission band. Background technique [0002] Today's television receivers use automatic channel searching to simplify their operation. This allows users to set up their television or satellite decoder with the push of a button. [0003] The main point of automatic search is to scan the receiving bands used by the entire device, and then store all the carrier frequencies and certain information about the receiving channels. For a satellite decoder, the receiving band to be scanned may be, for example, 1 GHz, and such scanning is rather lengthy. [0004] In order to perform a frequency band scan, it is known to scan according to frequency intervals, which are fixed to be smaller than the width of the channel, so that if a channel is somewhere in the receiving band, it is also guaranteed to be found. During a frequency ...

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): H04N5/44H03J1/00H04B7/26H04H40/90H04J1/02
CPCH04H40/90H03J1/0091H04B7/26
Inventor 洛朗·沙泰利耶斯特凡娜·阿利皮埃尔·莫克莱尼克拉·马尔塞让-吕克·尤姆佩茨勒内·戈捷
Owner INTERDIGITAL CE PATENT HLDG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com