Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and apparatus for automatic gain control

一种正交幅度调制、广播信号的技术，应用在的设备领域，能够解决增加存储器容量等问题，达到减小大小的效果

Active Publication Date: 2013-04-24
LG ELECTRONICS INC
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The compensation signal according to the accumulated gain error value is expressed in the form of an exponential function, where the compensation signal is pre-stored in the memory as a look-up table, and the compensation signal corresponding to the accumulated gain error value is read out from the memory, and output the compensation signal, which will increase the capacity of the memory

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 apparatus for automatic gain control
  • Method and apparatus for automatic gain control
  • Method and apparatus for automatic gain control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The examples are for illustration only and not for limitation. The matters illustrated in the description are provided to facilitate a comprehensive understanding of certain exemplary embodiments of the invention disclosed in conjunction with the accompanying drawings. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the exemplary embodiments described herein can be made without departing from the scope and spirit of the claimed invention. Accordingly, this application is adapted to explain its general principles and concepts in the most useful and simple manner.

[0030] figure 1 is a block diagram illustrating the structure of a frame whose guard interval is 1 / 9 among transmission frames transmitted from DTMB.

[0031] refer to figure 1 , the transmission frame transmitted from DTMB includes a frame sync and a frame body as a data interval.

[0032] Frame synchronization includes PN sequence. The PN sequence...

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

According to the device and method for the automatic gain control, the present invention controls the received signal intensity to a constant level by the receiver which is used to receive the exerted digital broadcast signal. With this end in view, it compensates the incoming signal received by the gain error detector by the compensating signal, detects the gain error, accumulate the gain error detected by the loop filter, and the compensating signal generator compensates the accumulated gain error by the prescheduled penalty function to generate the compensating signal, and compensates the received incoming signal detected by the gain error detector according to the generated compensating signal.

Description

[0001] This application is a divisional application of the application titled "Apparatus and Method for Automatic Gain Control" (application number: 200710128885.3; filing date: March 2, 2007). technical field [0002] The present invention relates to an apparatus and method for automatic gain control, and more particularly, to an apparatus and method for automatically adjusting the gain of a broadcast signal received from a receiver receiving the broadcast signal. Background technique [0003] The following description generally relates to an automatic gain control (AGC) apparatus and method for automatically adjusting the gain of a broadcast signal received from a receiver receiving the broadcast signal. [0004] Currently, digital broadcasting is being standardized locally based on a variety of technologies. For example, broadcast standards discussed in China include Digital Terrestrial Multimedia Broadcasting (DTMB). The DTMB standard in question employs a new modulatio...

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 Patents(China)
IPC IPC(8): H04N5/52H04N5/44H04L27/26H04N7/00
CPCH03G3/20H03G3/28H04N5/52H04H2201/11H04N21/4425
Inventor 金炫哲
Owner LG ELECTRONICS INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com