Multimode digital television exciter

A technology of digital TV and exciter, applied in the direction of TV, color TV, color TV components, etc., can solve the problems of general products without suitable structure, inconvenience, etc., to improve power efficiency, reduce heat dissipation, and reduce maintenance difficulty and workload effects

Active Publication Date: 2012-07-11
BEIJING BBEF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows multiple types of analog television (TV) channels with varying levels of resolutions to be transmitted over communication networks without causing any issues such as interference between them. By performing these techniques at both ends of each transmission line, this system becomes better able to transmit high definition video content that requires higher bandwidth than traditional broadcast systems like cable modems. Additionally, the inventors have developed an improved method called Multiplexed Digital PreCorrecting (MDPC), which helps correct errors caused during reception while also being capable of handling various forms of noise introduced into the network's radiofrequency spectrum. Overall, they aim to enhance performance and maintain reliable operation across diverse environments where there are many different versions of standardized devices operating within range from low frequencies up to 5 GHz.

Problems solved by technology

Technological Problem addressed by this patented technical issue relates to improving the efficiency and performance of multiple mode analog television systems while reducing costs associated with each type of signal transmitting device.

Method used

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  • Multimode digital television exciter
  • Multimode digital television exciter
  • Multimode digital television exciter

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Embodiment Construction

[0024] In order to further explain the technical means and effects that the present invention takes to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, characteristics and details of the multi-mode digital TV exciter proposed according to the present invention will be described below. Its effect is described in detail below.

[0025] see figure 1 As shown, it is a structural diagram of a multi-mode digital television exciter of the present invention. Existing digital television exciters mostly have a single standard, and generally include a channel coding unit 1, a digital pre-correction unit 2, a D / A conversion unit 3, a normal An intermodulation unit 4, a broadband local oscillator unit 5, a power adjustment amplifying unit 6, and a control unit 7, and the control unit 7 controls the channel coding unit 1, the digital pre-correction unit 2, the D / A conversion ...

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Abstract

The invention relates to a multimode digital television exciter, which comprises a channel encoding unit, a digital precorrection unit, a digital/analog (D/A) conversion unit, an orthogonal modulation unit, a broadband local oscillation unit, a power regulation and amplification unit and a control unit, wherein the channel encoding unit is a multi-standard channel encoding unit; and the digital precorrection unit is a multi-standard digital precorrection unit. Therefore, digital television standards, such as digital terrestrial multimedia broadcasting (DTMB), integrated services digital broadcasting (ISDB)-television (T), and digital video broadcasting (DVB)-T/H are realized through the multi-standard channel encoding unit; the standards can be switched in real time, and have extremely high capacity expandability; and furthermore, digital television standards and mobile television standards which are used in the whole world can be realized.

Description

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Claims

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Application Information

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Owner BEIJING BBEF SCI & TECH
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