Broadcast Signal Decoder Switching for One-Seg and 12-Seg Reception
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Solution Overview
Problem
Existing semiconductor devices face difficulties in appropriately switching between one-segment and twelve-segment digital terrestrial TV broadcasting reception processes, leading to inefficiencies in signal processing and increased power consumption.
Innovation Solution
A semiconductor device with integrated components including a first tuner I/F, a second tuner I/F, a decoder, and a general-purpose processor that selectively switches between decoding one-segment and twelve-segment broadcast signals based on signal intensity, allowing seamless switching and reduced processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the general purpose processor decodes both one-segment and twelve-segment broadcast signals, then the switching between broadcast modes becomes flexible, but the processing load and power consumption increase significantly
Solution Approach 1:
The patent divides the decoding function into two separate segments: a dedicated decoder for twelve-segment broadcast signals and a general purpose processor for one-segment broadcast signals. This segmentation allows each component to be optimized for its specific function, enabling flexible switching between broadcast modes while avoiding the excessive power consumption that would result from the general purpose processor handling both decoding tasks simultaneously.
2Reliability
If the general purpose processor handles high-throughput decoding of twelve-segment signals, then the reception quality improves, but the device complexity and processing requirements increase
Solution Approach 1:
The patent extracts the complex high-throughput decoding function for twelve-segment signals from the general purpose processor and assigns it to a dedicated decoder. This extraction maintains high reception quality for twelve-segment broadcasts while significantly reducing the processing requirements and complexity of the general purpose processor, which then only needs to handle the simpler one-segment decoding tasks.
3Ease of operation
If seamless switching between one-segment and twelve-segment broadcasting is implemented, then the user experience improves, but the signal processing complexity increases
Solution Approach 1:
The patent implements dynamic switching between one-segment and twelve-segment broadcast modes based on signal intensity conditions. The system automatically transitions between decoding paths depending on the received signal quality, providing seamless user experience without manual intervention. This dynamic approach manages signal processing complexity by activating only the necessary decoding path for current signal conditions rather than maintaining both simultaneously.
Data Source
AI summary
A semiconductor device includes a one-segment tuner I/F that is connected to a one-segment tuner, a tuner I/F that is connected to a digital terrestrial tuner, a decoder that selectively decodes a first broadcast signal supplied from the one-segment tuner I/F and a second broadcast signal supplied from the tuner I/F, a general purpose processor that is provided separately from the decoder and decodes the first broadcast signal, and a switch unit that, based on signal intensity of the second broadcast wave, switches the decoding by the decoder between the first broadcast signal and the second broadcast signal while the general purpose processor is decoding the first broadcast signal. The one-segment tuner I/F, the tuner I/F, the decoder, the general purpose processor, and the switch unit are integrated on one chip.