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Signal amplifying apparatus and method

A signal amplification and signal technology, applied in the field of signal amplification, can solve the problem of not providing calibration reference value and so on

Inactive Publication Date: 2006-07-12
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the device and method set the LNA to the "ON / OFF" state according to the level of the AGC signal after setting the specified reference value, it does not provide any scheme for correcting the reference value according to environmental changes

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  • Signal amplifying apparatus and method
  • Signal amplifying apparatus and method
  • Signal amplifying apparatus and method

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Embodiment Construction

[0018] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The aspects and features of the present invention and methods for achieving the aspects and features will be apparent by referring to the exemplary embodiments which will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the exemplary embodiments disclosed below, but will be implemented in various forms. Matters defined in the description, such as detailed construction and components, are merely provided to help those of ordinary skill in the art to fully understand the present invention, and the present invention is limited only within the scope of the claims. Throughout the description of the present invention, the same reference numerals are used for the same parts in the various drawings.

[0019] figure 2 is a block diagram showing a signal amplifying device accordi...

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Abstract

A signal amplifying apparatus and method selectively amplify a received signal according to the strength of the received signal. The signal amplifying apparatus includes a signal receiving unit for outputting a state signal according to a state of a received radio frequency (RF) signal, an amplifying unit for amplifying the received RF signal and a control unit for determining whether to operate the amplifying unit according to the output state signal.

Description

technical field [0001] Devices and methods according to the present invention relate to signal amplification, and more particularly to selectively amplifying received signals according to their strength. Background technique [0002] Generally, a television receiver is provided with a low noise amplifier (LNA) installed between an antenna and a tuner to improve reception sensitivity. This LNA has excellent noise filtering characteristics. [0003] The strength of a radio frequency (RF) signal received through an antenna varies according to areas and environments. For example, when receiving an RF signal through a television receiver, the strength of the received RF signal is weaker than the original signal due to the influence of surrounding buildings, changes in the air, and other environmental conditions, and the signal is affected by interference signals. [0004] This interfering signal is called a beat. As the strength of the received RF signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/20H03G3/32H04N5/52
CPCH03G3/3052H03G1/0088H04B1/109H04N5/52H04N5/44
Inventor 金旻庆
Owner SAMSUNG ELECTRONICS CO LTD