Mobile TV Receiver Architecture Offloads Main Processor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Integrating mobile TV services into mobile wireless terminals is complex due to the diversity and complexity of these devices, requiring efficient software integration and reducing the computational burden on the main processor system.
Innovation Solution
A system architecture that facilitates the integration of mobile TV services by using standard-based networking and programming interfaces, allowing mobile TV service to be added as a plug-in module to the main processor software, and optimizing the interface between the mobile TV receiver module and the main processor system to reduce MIPS loading, memory, and timing requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile TV service is integrated into mobile wireless terminals using conventional architectures, then the service functionality is achieved, but the computational burden on the main processor system increases significantly
Solution Approach 1:
The system is divided into two distinct modules: a mobile TV receiver module that handles all signal reception, demodulation, and packet processing functions, and a main processor system that only handles high-level application logic. This segmentation offloads the computationally intensive tasks from the main processor, reducing its computational burden while maintaining full mobile TV functionality.
Solution Approach 2:
A dedicated mobile TV receiver module acts as an intermediary between the antenna and the main processor system. This intermediate layer handles all complex signal processing tasks including RF tuning, analog-to-digital conversion, demodulation, and packet processing, thereby shielding the main processor from computational complexity while enabling full mobile TV service integration.
2Reliability
If mobile TV receiver module uses detailed packet processing and error correction, then signal reliability is improved, but interface data transmission requirements increase
Solution Approach 1:
All error correction, packet processing, and data validation operations are performed preliminarily within the mobile TV receiver module before data is transmitted to the main processor system. This preliminary processing ensures high signal reliability is achieved through comprehensive error correction while the interface only needs to transmit already-processed reliable data, optimizing throughput efficiency.
Solution Approach 2:
The complex packet processing and error correction functions are extracted from the main processor system and placed into the dedicated mobile TV receiver module. This extraction allows detailed reliability-enhancing processing to occur in isolation, with the interface only handling the transmission of processed results, thereby maintaining high reliability without increasing interface throughput requirements.
3Ease of manufacture
If standard-based networking interfaces are used for mobile TV integration, then ease of manufacture is improved, but software integration complexity increases
Solution Approach 1:
The mobile TV receiver module implements standard-based networking interfaces that replicate conventional communication protocols and data structures. By copying established interface standards, the system achieves ease of manufacture through proven, standardized implementations while the software integration complexity is contained within the receiver module's well-defined interface, preventing complexity from propagating to the main processor system.
Data Source
AI summary
A mobile TV system architecture for a mobile terminal that reduces the processing required by the main processor during reception of digital broadcasts such as DVB-H. The mobile terminal architecture includes a main processor system and a mobile TV receiver device. The mobile TV receiver device includes units for SI/PSI processing, IP processing and decryption engine. The SI/PSI (service information/program specific information) processing unit receives non-protected transport stream (TS) packets and extracts SI/PSI tables which can be stored in memory local to the receiver device. The IP processing unit receives decrypted error-corrected protected packets containing multimedia content. The receiver device may include an HTTP server for communicating with a browser application running on the main processor system. The browser application presents multimedia content, received via HTTP, corresponding to a URL entered or selected by a user.