Broadcast Receiver Decoding Control for Lower Power Consumption
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Solution Overview
Problem
Existing receiving devices for digital terrestrial broadcasting experience increased power consumption due to continuous operation of Viterbi decoding and RS decoding units, even when the positive decoding probability is not improved.
Innovation Solution
A receiving device that includes multiple decoding units, delay units, a reliability increasing unit, and a decode stop determination unit, which performs interleaving and inverse conversion processes to control decoding and determine when to stop subsequent decoding based on decoding results, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Viterbi decoding unit and RS decoding unit continue operation to improve reception performance, then decoding reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic control of decoding operations by introducing a decode stop determination unit that adaptively decides whether to continue or stop decoding based on real-time decoding results. The system transitions from static continuous operation to dynamic conditional operation, adjusting decoding behavior according to reception conditions to optimize the balance between reliability and power consumption.
Solution Approach 2:
The patent employs feedback mechanisms where decoding results are fed back to the decode stop determination unit, which then controls subsequent decoding operations. The feedback loop enables the system to learn from previous decoding outcomes and make informed decisions about continuing or stopping decoding, thereby preventing unnecessary power consumption while maintaining adequate decoding reliability.
2Reliability
If iterative decoding is performed multiple times to improve positive decoding probability, then reception performance is improved, but unnecessary operations consume additional power
Solution Approach 1:
The patent applies partial action by performing iterative decoding only when necessary rather than always executing the full decoding process. The decode stop determination unit evaluates decoding results after each iteration and terminates the process early when sufficient reliability is achieved, thereby avoiding excessive decoding operations and reducing energy waste while maintaining adequate positive decoding probability.
3Stability of the object's composition
If decoding operations are continuously performed to ensure stable reception, then reception stability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic action by performing decoding operations at strategically determined intervals rather than continuously. The decode stop determination unit monitors reception conditions and triggers decoding operations only when necessary, creating a periodic pattern of activity that maintains reception stability while significantly reducing power consumption compared to continuous operation.
Data Source
AI summary
The present disclosure relates to a receiving device, a receiving method, and a program that can reduce power consumption. A Viterbi decoding unit performs Viterbi decoding on a likelihood as a processing target, a byte de-interleaver delays a part of a decoding result of Viterbi decoding, and an RS decoding unit performs RS decoding on the decoding result after delaying by the byte de-interleaver. A likelihood converting unit controls decoding of the likelihood to improve reliability of the decoding result. Then, when all of a predetermined number of decoding results by the RS decoding unit are succeeded or failed, the decode stop determination unit determines to stop subsequent decoding on the likelihood as a processing target. The present technology may be applied to, for example, a receiving device that receives digital terrestrial broadcasting compatible with the ISDB-T standard, or the like.