DMB Receiver Multi-Channel Signal Segmentation
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Solution Overview
Problem
Existing DMB receiving apparatuses can only output a single selected DMB channel's video and audio signals, discarding signals from other channels, preventing users from simultaneously viewing or listening to content from different channels.
Innovation Solution
A DMB receiving apparatus and method that includes a channel signal receiving/processing module, a user interface frame managing module, and a channel signal selecting/outputting module, allowing users to select and output video and audio signals from multiple DMB channels simultaneously through a screen and speaker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a DMB receiving apparatus outputs only a specific selected DMB channel signal, then the apparatus structure remains simple and easy to operate, but the user cannot view or listen to content from multiple channels simultaneously
Solution Approach 1:
The patent segments the DMB channel signals into separate video and audio signal streams for each channel. The channel signal receiving/processing module decodes each channel's video and audio signals independently, allowing selective extraction and combination of signals from different channels. This segmentation enables the system to handle multiple channels simultaneously without overwhelming complexity.
Solution Approach 2:
The patent introduces an intermediary signal processing architecture where the channel signal selecting/outputting module acts as a mediator between the received multi-channel signals and the output devices. This intermediary module selectively extracts and combines video and audio signals from different channels, managing the complexity centrally while keeping the overall system architecture clear and manageable.
2Adaptability or versatility
If a DMB receiving apparatus discards unselected DMB channel signals, then the processing load is reduced, but the user loses access to content from other channels
Solution Approach 1:
The patent applies partial action by selectively processing and extracting only the necessary video and audio signals from each channel based on user selection. Rather than discarding all unselected channel signals, the system extracts and stores relevant signals from multiple channels, then combines them as needed. This partial processing approach reduces unnecessary processing load while maintaining access to multi-channel content.
3Adaptability or versatility
If a DMB receiving apparatus outputs video and audio signals from the same channel only, then the synchronization is maintained, but the user cannot enjoy mixed channel content preferences
Solution Approach 1:
The patent applies preliminary action by pre-decoding and storing video and audio signals from multiple DMB channels before the user makes selections. The channel signal receiving/processing module continuously receives and decodes signals from all channels, maintaining synchronization buffers. When the user selects specific channels, the pre-prepared signals are quickly extracted and combined without disrupting synchronization, as the signals were already buffered and organized in advance.
Data Source
AI summary
Disclosed are an apparatus and a method of receiving a digital multimedia broadcasting (DMB). According to the invention, there is provided a storage buffer capable of temporarily storing each of the received DMB channel signals and the specific contents signals selected by the user irrespective of whether the DMB channels are same to each other or not are outputted, among the contents signals (for example, video signal, audio signal and data signal) contained in each of the DMB channel signals temporarily stored. Accordingly, the user can see and hear the contents signals of the different channels (for example, a combination of video signal of channel A and audio signal of channel B) outputted through a screen and a speaker at the same time depending on the user's tastes.