External Coding Device for Exciter Standard Adaptation
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Solution Overview
Problem
Existing digital broadcasting standards, such as DVB-T, require adaptation to newer standards like DVB-T2, which necessitates replacing entire exciters due to their inability to handle higher data volumes, making simple reprogramming insufficient.
Innovation Solution
A coding device and method that convert digital data streams into digital baseband or intermediate frequency signals in the time domain using an asynchronous serial interface according to the European standard EN-500083-9, allowing external coding and transmission, enabling exciters to be updated with software rather than replaced, by reading and processing these signals through existing interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the exciter is adapted to handle higher data volumes for new broadcasting standards, then the data transmission capability is improved, but the device complexity and cost increase due to complete replacement
Solution Approach 1:
The system is divided into two functional segments: an external coding device that performs the complex coding operations for new standards, and the existing exciter that handles signal transmission. This segmentation allows the exciter to remain unchanged while the coding functionality is upgraded externally, resolving the contradiction between improved data transmission capability and avoided device replacement.
Solution Approach 2:
An asynchronous serial interface acts as an intermediary between the external coding device and the exciter. The coding device outputs coded signals through this interface, which the exciter then processes and transmits. This intermediary connection enables compatibility between new coding standards and existing exciter hardware without requiring modification or replacement of the exciter.
2Adaptability or versatility
If the exciter is reprogrammed to support new standards, then the adaptability is improved, but the reliability deteriorates because simple reprogramming is insufficient for handling higher data volumes
Solution Approach 1:
The coding function is extracted from the exciter and placed in a separate external coding device. This extraction allows the exciter to maintain its original reliable programming while the complex coding requirements for new standards are handled by the dedicated external device, ensuring both adaptability to new standards and reliability of performance.
3Adaptability or versatility
If the complete exciter is replaced to support new standards, then the functionality is improved, but the cost increases significantly
Solution Approach 1:
The external coding device is designed to be a universal solution that can interface with existing exciters through the standard asynchronous serial interface. This multi-functional approach allows a single external device to enable new standard support without requiring different hardware modifications for each exciter model, significantly reducing implementation costs while maintaining full standard support capability.
Data Source
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AI summary
The invention relates to a method and system (1) for the external digital coding of a baseband signal or an intermediate frequency signal. Initially, a digital data flow is converted by a coding device (2) to a digital baseband signal in a time domain, or to a digital intermediate frequency signal in a time domain. The digitally generated signal is transmitted to an additional device (3) via an asynchronous serial interface of the coding device (2). The additional device (3) likewise has an asynchronous serial interface, which is connected to asynchronous serial interface of the coding device (2). The device (3) imports the emitted digital baseband signal or intermediate frequency signal, and reprocesses same.