Preference Channel Manager for Mobile Broadcast Systems
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Solution Overview
Problem
Mobile broadcast systems experience significant delay times during channel switching due to power consumption and resource limitations in mobile terminals, limiting user control over channel selection and causing tedium.
Innovation Solution
An apparatus and method for managing preference channels by dynamically allocating demultiplexed logical channels to decoding buffers based on user preferences, allowing immediate decoding and display of selected channels, reducing the need for waiting until a channel transmission period is reached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conventional preference channel composition method is used, then multiple channels can be transmitted through one image, but users cannot directly select their preference channels and must wait for channel switching
Solution Approach 1:
The system pre-allocates decoding buffers for multiple preference channels before the user needs to switch. When a user selects a channel, the corresponding buffer is already prepared with the channel data, eliminating the need to wait for channel transmission periods. This preliminary preparation of decoding resources directly reduces channel switching delay and improves user selection flexibility.
2Loss of time
If the mobile terminal waits for the channel transmission period to switch channels, then power consumption is reduced, but channel switching delay increases to 6 seconds
Solution Approach 1:
The system performs preliminary allocation of decoding buffers for multiple channels in advance. When a channel switch is needed, the buffer is already prepared with the required channel data, allowing immediate decoding without waiting for the next transmission period. This reduces switching delay from 6 seconds to 2 seconds while maintaining power efficiency by only activating the decoding buffer when actually needed.
Solution Approach 2:
The system dynamically adjusts buffer allocation based on user preferences and channel switching needs. Rather than continuously monitoring all channels, the system allocates buffers on-demand when users express interest in specific channels, optimizing the balance between responsiveness and power consumption.
3Quantity of substance
If the LASeR format is used for multimedia content, then storage capacity is reduced, but the system becomes more complex with multiple elementary streams
Solution Approach 1:
The system segments the multimedia content into separate elementary streams (video, audio, metadata) and manages them independently through the LASeR format. Each stream can be decoded and processed separately, which simplifies the overall system architecture by allowing modular handling of complex multimedia data while maintaining efficient storage utilization.
Data Source
AI summary
An apparatus and method for managing a preference channel are provided which can reduce a delay time when a channel change is made between preference channels, by storing a preference channel directly selected by a mobile terminal user in a mobile broadcast system. A mobile terminal receives and demultiplexes multiplexed logical channels on which data streams are transmitted from a service provider through a communication network. Preference channels of the demultiplexed logical channels are dynamically allocated to decoding buffers using stored information. A decoding time at which data of the decoding buffers is accessed and decoded is computed using reference information. A decoding operation is performed at the computed decoding time, and decoded channel-by-channel elementary streams are stored in a memory. The decoded channel-by-channel elementary streams stored in the memory are displayed on a screen of the mobile terminal.