Digital Decoder Channel Change Latency via Activity Detection
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Solution Overview
Problem
Current digital television decoders experience long channel change times due to the need to resubscribe to adjacent channels after user inactivity, leading to increased network resource consumption and waiting times when the user wants to switch channels again.
Innovation Solution
Implementing a method where the decoder automatically triggers the reception of secondary channels based on detected user activity, such as remote control movements or button presses, to anticipate potential channel changes and reduce unnecessary content reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the decoder subscribes to adjacent channels continuously, then channel change speed is improved, but network bandwidth consumption increases
Solution Approach 1:
The system dynamically adjusts the reception state of secondary channels based on detected user activities. When user activity is detected, the system transitions from a low-power state (not receiving secondary channels) to a high-performance state (receiving secondary channels), and vice versa when no activity is detected. This dynamic adaptation resolves the contradiction by making channel readiness conditional on actual user intent rather than continuous.
Solution Approach 2:
The system performs preliminary reception of secondary channels when user activity is detected, preparing the channels for potential immediate playback. This preliminary action occurs only when needed (upon detecting user interaction), rather than continuously, thus maintaining fast channel change capability while reducing overall network bandwidth consumption.
2Loss of time
If the decoder receives secondary channels continuously, then waiting time for channel changes is reduced, but network resource consumption increases
Solution Approach 1:
Instead of continuous reception, the system employs periodic reception triggered by user activity detection. The decoder periodically checks for user activities (remote control movements, button presses) and only activates secondary channel reception when such activities are detected. This periodic approach reduces network resource consumption while maintaining readiness when users actually want to change channels.
3Loss of energy
If the decoder unsubscribes from adjacent channels after user inactivity, then network bandwidth consumption is reduced, but channel change speed decreases
Solution Approach 1:
The system uses feedback from user activity detection to control the reception state of secondary channels. When user activities are detected (such as remote control movements or button presses), the system activates reception of secondary channels. This feedback mechanism ensures that fast channel change capability is maintained precisely when users show intent to interact, resolving the contradiction between bandwidth savings and channel change speed.
4Adaptability or versatility
If the decoder requests access to secondary channels on each main content request, then channel availability is improved, but device complexity increases
Solution Approach 1:
The system employs self-service mechanisms where the decoder autonomously manages secondary channel reception based on detected user activities. Rather than requiring complex external control logic to manage channel subscriptions, the system automatically detects user intent and adjusts its own reception behavior, simplifying the overall control architecture while maintaining channel availability.
Data Source
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AI summary
The invention pertains to a method for managing the reception of digital contents (CH1-CH3) by a management device (DISP) suitable for receiving a command for selecting a content (CH2), termed the main content, arising from a control device (TCD). The management device is suitable for requesting the reception of the main content (CH2) and of other digital contents (CH1; CH3), termed secondary contents. It is also suitable for receiving the data streams representative of the requested contents (CH1-CH3), and for requesting the retrieval of the main content (CH2). The method is characterized in that in the course of the retrieval of the main content, a detection of an activity related to the control device (TCD) triggers a request suitable for requesting the reception of the secondary contents (CH1; CH3).