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

Method and device for improving ensemble auto searching efficiency

An automatic, radio technology, used in broadcasting devices, electrical components, broadcasting receiving circuits, etc., can solve the problems of wasting time, slowing down the automatic search speed of radio stations, and misjudging radio stations.

Inactive Publication Date: 2013-03-13
成一电子股份有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current Ensemble Auto Searching mechanism used in Digital Audio Broadcasting (DAB) is easily limited by the synchronization mechanism or receiving conditions (such as noise interference), and the existence of stations is misjudged, which wastes time Collecting station information that does not exist at all, causing the automatic station search speed to slow down, resulting in a waste of time and a waste of power resources of the corresponding electronic devices

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 and device for improving ensemble auto searching efficiency
  • Method and device for improving ensemble auto searching efficiency
  • Method and device for improving ensemble auto searching efficiency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 It is a schematic diagram of the frame structure of digital audio broadcasting transmission signals. The digital audio broadcasting transmission signal consists of multiple consecutive transmission frames, where each transmission frame is divided into a start symbol (NULL), a phase reference symbol (Phase Reference Symbol, PRS), a fast information channel (Fast Information Channel, FIC) and main service Channel (Main Service Channel, MSC). Wherein, the start symbol does not carry any signal, and the main function of the start symbol is frame boundary synchronization, and is used to preliminarily detect whether there is a possible DAB channel. The phase reference symbol has synchronization information such as frequency and phase, the fast information channel carries relevant information such as channel and station content, and the main service channel carries the digital content of the program or service. Among them, T F is the time length between each start ...

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

A method and a device for improving ensemble auto searching efficiency are provided. In this method, a first digital audio broadcasting transmitted signal is received, and a time interval between null symbols of adjacent ones of multiple continuous transmitted frames in the first digital audio broadcasting transmitted signal is calculated. If the time interval fits a preset transmitted frame time duration, it is then determined that a first channel corresponding to the first digital audio broadcasting transmitted signal is a preliminarily identified digital audio broadcasting channel. A first phase reference symbol of the first digital audio broadcasting transmitted signal is then detected, and a first correlation value between the first phase reference symbol and a preset phase reference symbol is calculated. If the first correlation value is greater than or equal to a threshold, it is then determined that the first channel is a valid digital audio broadcasting channel.

Description

technical field [0001] The present invention relates to a device and method for improving automatic station search efficiency, and in particular to a device and method for improving station automatic search efficiency suitable for digital audio broadcasting. Background technique [0002] The current Ensemble Auto Searching mechanism used in Digital Audio Broadcasting (DAB) is easily limited by the synchronization mechanism or receiving conditions (such as noise interference), and the existence of stations is misjudged, which wastes time The collection of station information that does not exist at all slows down the speed of automatic station search, resulting in a waste of time and a waste of power resources of the corresponding electronic devices. Therefore, how to reduce the waste of time caused by misjudgment during the station search process and effectively shorten the station search time is a topic worth studying. Contents of the invention [0003] In view of this, t...

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): H04H40/18H04H60/14
CPCH04L27/2613H04L27/2685H04L27/06H04L27/2656
Inventor 张世维
Owner 成一电子股份有限公司