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Apparatus and method for monitoring TV signal strength

A TV signal and strength technology, applied in the direction of TV, electrical components, image communication, etc., can solve the problem of inability to monitor the TV signal strength conveniently and in real time, and achieve the effects of saving manpower, convenient use, and improving real-time performance and reliability

Inactive Publication Date: 2006-06-14
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the shortcoming of being unable to monitor TV signal strength conveniently and in real time in the prior art, and provides a device and method for reliably monitoring TV signal strength in real time

Method used

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  • Apparatus and method for monitoring TV signal strength
  • Apparatus and method for monitoring TV signal strength
  • Apparatus and method for monitoring TV signal strength

Examples

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Embodiment Construction

[0010] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0011] Such as figure 1 As shown, a device for monitoring TV signal strength includes a central processing unit 11 , a TV signal receiving module, a TV signal analysis module and a result feedback module 20 , an oscillation circuit 17 , a reset circuit 18 and a data storage module 19 . The TV signal receiving module is a frequency-locking receiving module 12 (such as a tuner), and the TV signal analyzing module includes an analog-to-digital conversion circuit 13 and an analysis unit 14 .

[0012] The frequency-locking receiving module 12 (being tuner) locks the specified frequency of the central processing unit, receives the external TV signal to be tested, and obtains the AGC voltage value U corresponding to the TV signal strength AGC .

[0013] The analog-to-digital conversion circuit 13 receives the AGC voltage value U ou...

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Abstract

This invention discloses a device for monitoring TV signal strength used in debug including a CPU, a TV signal receiving module, a TV signal analysis module and a result feed back module. This invention also discloses a method for timely monitoring TV signals including: 1, receiving tuned TV signals by the TV signal module, 2, analyzing the TV signals and getting related signals to be turned to comparable test values to be compared with the set top limit value and the bottom limit values to see if the test value is exceeded, 3, feeding back the result to be prompted to the user.

Description

【Technical field】 [0001] The invention relates to a device and a method for monitoring TV signal strength during TV production and debugging. 【Background technique】 [0002] In the TV production process, an automatic gain control debugging station is generally set up to adjust the automatic gain control coefficient of the TV. The general process requires that when the input TV signal strength is 60+2dBuv, adjust the automatic gain control matching circuit to obtain the appropriate automatic gain control coefficient. If the input TV signal strength exceeds 60+2dBuv, the debugged TV will not have good automatic gain control characteristics, which will affect the quality of the TV. The stability of TV signal strength is poor, and its strength varies greatly with the transmission distance. At present, in order to ensure that the TV signal strength used for debugging is within the specified range, it is generally required to manually test the signal strength of the AGC debuggin...

Claims

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Application Information

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IPC IPC(8): H04N17/04
Inventor 曹海东杨军治吴伟
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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