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Protection method of high frequency head short circuit protection system of digit-analog integrated TV

A digital-analog integration, short-circuit protection technology, applied in the parts of TV systems, color TV parts, TVs, etc. The effect of the short circuit protection of the tuner

Inactive Publication Date: 2011-02-02
惠州德赛信息科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the tuner of digital-analog integrated TV generally does not have short-circuit protection function. Even if it has, it is generally a pure hardware implementation technology. The disadvantage of pure hardware implementation method is that it uses more related components and is more expensive, and it cannot be judged by software. When the voltage is low, it is a short circuit, and the pop-up OSD words (such as short circuit) cannot be realized to remind the user

Method used

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  • Protection method of high frequency head short circuit protection system of digit-analog integrated TV
  • Protection method of high frequency head short circuit protection system of digit-analog integrated TV
  • Protection method of high frequency head short circuit protection system of digit-analog integrated TV

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with drawings and embodiments.

[0020] Such as figure 1 A digital-analog integrated TV tuner short-circuit protection system is shown, including a tuner, an analog demodulator, a digital demodulator, a display screen, an analog decoder, a digital decoder, a FLASH memory and a SDRAM memory The high-frequency head is connected with the analog demodulator and the digital demodulator, the digital decoder is connected with the digital demodulator, the analog decoder, the FLASH memory, and the SDRAM memory, and the analog decoder is connected with the analog demodulator. Controller, display connection.

[0021] The analog demodulator chip uses TDA9886, the digital demodulator chip uses DIB3000MC, the analog decoder chip uses MST726, the digital decoder chip uses ZR39130, and the display screen is a 7-inch LCD display.

[0022] MST726 chip IO port SAR2 / GPIO 28 is connected in parallel with ANT_SHORT and tu...

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PUM

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Abstract

The invention discloses a digital-analog integrated TV tuner short circuit protective system, including a tuner, an analog demodulator, a digital demodulator, a display screen, an analog decoder, a digital decoder, a FLASH memory and an SDRAM memory, wherein, the tuner is connected to the analog demodulator and the digital demodulator; the digital decoder is connected to the digital demodulator, the analog decoder, the FLASH memory and the SDRAM memory; and the analog decoder is connected to the analog demodulator and the display screen. The present invention also discloses a protection method of the digital-analog integrated TV tuner short circuit protective system. The digital-analog integrated TV tuner short circuit protective system adopts a method of combining the software and hardware to realization the digital-analog integrated TV tuner short circuit protective function.

Description

technical field [0001] The invention relates to a digital-analog integrated television tuner, in particular to a digital-analog integrated television tuner short-circuit protection system and a protection method thereof. Background technique [0002] At present, the tuner of digital-analog integrated TV generally does not have short-circuit protection function, and even if there is, it is generally a pure hardware implementation technology. The disadvantage of pure hardware implementation method is that it uses more related components and is more expensive, and it cannot be judged by software. When the voltage is low, it is a short circuit, and it is not possible to pop up the OSD word (such as a short circuit) to remind the user. Contents of the invention [0003] In order to overcome the deficiencies in the prior art above, the present invention provides a digital-analog integrated TV tuner short-circuit protection system with low cost and improved safety performance. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/44H04N5/455H04N5/63H02H7/20
Inventor 李冠明刘耀义邓国辉郑忠飞
Owner 惠州德赛信息科技有限公司
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