Telematics Broadcast Receiver Multiple Service Processing

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Solution Overview

Problem

Existing telematics terminals lack the capability to simultaneously receive and process multiple mobile broadcast services, particularly in vestigial side band (VSB) mode, which limits their functionality and user experience.

Innovation Solution

A telematics terminal system is designed with multiple receiving units, a known sequence detector, channel equalizer, and display unit, enabling the simultaneous reception and processing of multiple mobile broadcast services by using known data sequences for channel equalization and error correction, and integrating a position information module for navigation and voice processing for enhanced user services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single receiving unit is used in telematics terminals, then device complexity is reduced, but the capability to simultaneously receive and process multiple mobile broadcast services is limited

Engineering Contradiction:

Improvecapability to simultaneously receive and process multiple mobile broadcast servicesVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The receiving unit is divided into multiple parallel receiving units (first receiving unit, second receiving unit, etc.), each capable of independently receiving broadcast signals. This segmentation enables simultaneous reception of multiple broadcast services while keeping each individual receiving unit relatively simple in structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple receiving units are designed with identical functional capabilities to receive different types of broadcast signals (VSB mode, other modes). Each receiving unit can process multiple broadcast services, providing universal functionality across different service types while maintaining standardized processing architecture.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If known data sequences are inserted in broadcast signals for channel equalization, then channel equalization accuracy is improved, but signal transmission efficiency is reduced

Engineering Contradiction:

Improvechannel equalization accuracyVSAvoidsignal transmission efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

Known data sequences are inserted only in specific regions (first region, second region, third region) of the broadcast signal rather than throughout the entire signal. This partial insertion provides sufficient reference points for channel equalization while minimizing the impact on overall signal transmission efficiency.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

Known data sequences serve as intermediary reference signals that facilitate channel equalization without being part of the actual broadcast content. These intermediary sequences enable the receiver to compensate for channel effects while the majority of the signal bandwidth remains dedicated to useful broadcast data.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple receiving units are added to enable simultaneous reception of multiple broadcast services, then service diversity is improved, but power consumption increases

Engineering Contradiction:

Improveservice diversityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

Multiple receiving units share common processing resources including the channel equalizer, known sequence detector, and broadcast signal processor. By merging these processing functions, the system achieves multiple broadcast service reception capabilities while avoiding proportional increases in power consumption that would result from completely separate processing chains for each receiving unit.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10264553B2Broadcast receiving system and method for processing broadcast signals

Publication Date: 2019.04.16 LG ELECTRONICS INC

AI summary

A method and apparatus for transmitting a broadcast signal are provided. Data of data packets is encoded to add first parity data to the data packets. The data packets include broadcast data and signaling data for a service. The signaling data includes type information indicating a type of the service and channel information of the service. Information for acquisition of the signaling data is predefined. The encoded data is block interleaved. The block-interleaved data is convolutional interleaved. Transmission parameters are first encoded for signaling the broadcast data to add second parity data to the transmission parameters, and the first-encoded transmission parameters are second encoded at a code rate. A frame including the convolutional interleaved data and the second-encoded transmission parameters is built. The broadcast signal including the frame is transmitted. The transmission parameters include information for identifying a number of the first parity data.