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High-power digital power amplifier integrated system for digital film player

A technology of digital power amplifier and digital cinema, applied in parts of TV system, parts of color TV, TV, etc., to achieve the effect of simple application and operation, portability and volume reduction

Active Publication Date: 2009-10-21
北京世纪东方数字电影院线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the film industry, there is currently no product that combines a digital audio power amplifier with an output power of more than 200W per channel and a movie player.

Method used

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  • High-power digital power amplifier integrated system for digital film player
  • High-power digital power amplifier integrated system for digital film player

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Experimental program
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Embodiment Construction

[0018] Please refer to figure 1 A block diagram of a digital movie player with a high-power digital audio power amplifier system, illustrating the connection relationship between a full-digital high-power audio power amplifier system and a digital movie player and how to realize the high-power digital audio power amplifier system of a digital movie player Operation, the overall scheme design is divided into four parts: the overall structure of the product, the structure of the product application system, the structure of the product support system, and the product workflow:

[0019] 1. The overall structure of the product:

[0020] Main board part: including the main chip, memory unit, and various input and output interface units, bus interaction unit, mainly has the following interfaces: IDE hard disk interface, serial port, network interface, USB2.0 interface, digital video DVI output port, VGA output port, Component video output port, analog 6-channel, stereo audio output ...

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PUM

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Abstract

The invention relates to a high-power digital power amplifier integrated machine system of a digital movie player. Amplification and microphone pre-amplification are connected to the addition circuit; each addition circuit, input balance circuit, buffer circuit, controllable pulse width modulation circuit, drive, control circuit, final power amplifier circuit, and filter are connected in series in sequence, and the final power The amplifying circuit is connected to the drive and control circuits through the controllable pulse width modulation circuit, and the delay start of the short circuit and overload protection circuit is connected to each drive and control circuit. The invention can well meet the actual application requirements of mobile projection in the rural digital movie market, greatly reduces the volume and weight of the whole set of digital movie system, and lowers the cost. At the same time, it greatly facilitates the effective management of government departments, and can realize the requirement of showing one movie per month in every village in the country.

Description

technical field [0001] The invention relates to a digital movie playing product in the radio, movie and television industry, in particular to a high-power digital power amplifier integrated machine system of a digital movie player. Background technique [0002] At present, the radio, film and television industry, especially the digital film sector, is dominated by basic digital film players. [0003] Audio power amplifiers are generally very independent audio power amplification products, especially audio amplifiers with an output power of more than 200W per channel are basically independent products composed of two or six channels. [0004] In the film industry, there is currently no product that combines a digital audio power amplifier with an output power of more than 200W per channel and a movie player. The audio output of the digital movie player has not been amplified by a special power, and cannot be directly connected to the speaker. It must be used with a professio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/60H04R3/00
Inventor 罗燕京陈龙陈大山孙凌峰
Owner 北京世纪东方数字电影院线有限公司
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