Method for testing receiving performance of digital television receiving terminal

A technology for digital TV reception and digital TV, applied in the parts of color TV, TV system, TV, etc., can solve the problems of long test time, low test efficiency, slow test speed, etc., to save test time , The effect of improving the efficiency of production testing

Inactive Publication Date: 2008-10-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In view of the problems of long test time, slow test speed, and low test efficiency in the above-mentioned existing test method for the TV function of the digital TV receiving termina

Method used

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  • Method for testing receiving performance of digital television receiving terminal
  • Method for testing receiving performance of digital television receiving terminal
  • Method for testing receiving performance of digital television receiving terminal

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] Add a TV function self-test software module in the software of the digital TV receiving terminal, adopt such as figure 1 The wireless device connection shown is used to test the terminal. The digital TV transmitter and the digital TV receiving terminal are respectively connected to an external antenna, and are connected through air wireless. Since the wireless transmission loss is relatively large, the output power of the transmitter needs to be Large enough, and an appropriate distance should be kept between the transmitter and the terminal so that a sufficiently strong TV signal can be received.

[0037] After the equipment is connected wirelessly, the test process of the TV receiving performance of the digital TV receiving terminal is as follows: image 3 As shown, the specific implementation steps are as follows:

[0038] 1. The test starts.

[0039] 2. Carry out self-testing of the TV chip, including chip communication interface testing and chip firmware download...

no. 2 example

[0045] Add a TV function self-test software module in the software of the digital TV receiving terminal, figure 2 It is a schematic diagram of equipment connection for TV performance testing in a wired way. The digital TV transmitter and digital TV receiving terminal are connected by a radio frequency cable. The output power of the transmitter should be set within the normal receiving level range of the receiver.

[0046] After the device is connected by cable, the test process of the TV receiving performance of the digital TV receiving terminal is as follows: image 3 As shown, the specific steps are the same as those in the first embodiment, so details are not repeated.

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PUM

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Abstract

The invention provides a method for testing receiving performance of a digital TV receiving terminal in the field of digital TV receiving terminal testing, comprising the following steps: connecting a digital TV transmitter to the digital TV receiving terminal, test starts after the digital TV receives terminal receiving TV signal from the digital TV transmitter; a central processor issues a channel searching command to the digital TV tuning chip; the digital TV tuning chip searches some TV channel with fixed-frequency; if channel searching is successful, the test pass, or else executes the next step; back to the former step, renewedly searching at least once, if channel searching is successful, the test pass, or else fails. The method of the invention realizes scan for a fixed frequency, thereby improving speed for testing TV receiving function of the digital TV receiving terminal, which further saves testing time and effectively improves testing efficiency.

Description

technical field [0001] The invention relates to the field of testing digital TV equipment, in particular to a testing method for receiving performance of a digital TV receiving terminal. Background technique [0002] In the production of digital TV receiving terminals (such as digital TV, mobile phone TV, etc.), the detection step of the TV receiving performance of the terminal is indispensable. At present, the method of directly receiving and playing is used for detection. There are usually two detection methods: [0003] One is the wireless method: use the antenna of the digital TV receiving terminal itself or an external receiving antenna to receive the digital TV program being played. If the TV signal can be received and played normally, the TV receiving performance of the terminal is considered to be normal. , otherwise it fails. Specific steps are as follows: [0004] 1) Turn on the transmitter and play TV programs; [0005] 2) Adjust the receiving antenna of the t...

Claims

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Application Information

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IPC IPC(8): H04N17/04H04N17/00H04N5/44
Inventor 周启龙
Owner ZTE CORP
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