DVB-H Receiver Fast Channel Switching via Non-Consecutive Burst Multiplexing
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Solution Overview
Problem
DVB-H receivers face challenges in achieving fast channel switching due to limited memory, which increases cost and power consumption, making it difficult to meet user satisfaction with current channel switching times.
Innovation Solution
The method involves encapsulating IP datagrams into MPE sections, inserting them into elementary streams, and multiplexing these streams into non-consecutive bursts, allowing for efficient channel switching without requiring additional memory, by presenting the channel line-up on an electronic service guide and skipping certain real-time A/V streams for decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If additional memory is added to DVB-H receivers to achieve faster channel switching, then channel switching speed is improved, but device cost and power consumption increase
Solution Approach 1:
The transmitter performs preliminary actions by organizing and pre-positioning data bursts in a specific temporal pattern. Elementary streams are multiplexed into non-consecutive bursts with strategic gaps, allowing the receiver to prepare for channel switching in advance without requiring additional memory buffers, thus achieving fast switching without increased power consumption
Solution Approach 2:
The system dynamically adjusts the reception pattern by exploiting the non-consecutive burst structure. The receiver can selectively tune into specific bursts corresponding to desired channels while skipping others, creating a dynamic channel switching mechanism that adapts to user preferences without requiring large memory resources
2Speed
If additional memory is added to DVB-H receivers to achieve faster channel switching, then channel switching speed is improved, but device cost increases
Solution Approach 1:
The transmitter performs preliminary actions by organizing and pre-positioning data bursts in a specific temporal pattern. Elementary streams are multiplexed into non-consecutive bursts with strategic gaps, allowing the receiver to prepare for channel switching in advance without requiring additional memory buffers, thus achieving fast switching without increased power consumption
Solution Approach 2:
The system dynamically adjusts the reception pattern by exploiting the non-consecutive burst structure. The receiver can selectively tune into specific bursts corresponding to desired channels while skipping others, creating a dynamic channel switching mechanism that adapts to user preferences without requiring large memory resources
3Quantity of substance
If conventional multiplexing is used with consecutive bursts, then memory utilization is efficient, but channel switching time increases and becomes dependent on time slice period
Solution Approach 1:
The transmitter performs preliminary actions by organizing and pre-positioning data bursts in a specific temporal pattern. Elementary streams are multiplexed into non-consecutive bursts with strategic gaps, allowing the receiver to prepare for channel switching in advance without requiring additional memory buffers, thus achieving fast switching without increased power consumption
Solution Approach 2:
The receiver exploits the non-consecutive burst structure to skip unnecessary bursts and directly access bursts containing data for the desired channel. This skipping mechanism allows the receiver to bypass time slice period dependencies and achieve faster channel switching by rushing through irrelevant data transmissions
Data Source
AI summary
An apparatus and method for channel switching comprising encapsulating a plurality of IP datagrams associated with a plurality of real time audio/visual (A/V) streams or a plurality of file objects onto a plurality of MPE sections; inserting the plurality of MPE sections into one of a plurality of elementary streams; and multiplexing the plurality of elementary streams associated with the plurality of real time A/V streams or the plurality of file objects into a plurality of non-consecutive bursts, wherein the plurality of elementary streams are adjacent in a channel line-up. In one aspect, the plurality of non-consecutive bursts is transmitted to a DVB-H receiver with a limited memory size for enabling fast channel switching. In one aspect, the channel line-up is presented in an electronic service guide (ESG).