Electronic Device Channel Tuning with Broadcast Standard Detection
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Solution Overview
Problem
Electronic devices face inefficiencies in receiving broadcast signals when channel information is outdated or unavailable, leading to lengthy channel searches and user inconvenience during transitions between broadcast standards like ATSC 1.0 to ATSC 3.0.
Innovation Solution
The electronic device includes a processor that identifies the broadcast standard and frequency band of a selected channel by considering user preferences, viewing history, and regional broadcast environments, updating stored channel information to quickly provide the desired broadcast service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device searches all frequencies for broadcast standards when channel information is unavailable, then the device can find the broadcast signal, but the channel search takes a lot of time and the user cannot operate the device
Solution Approach 1:
The processor stores channel information including frequency bands and broadcast standards in advance before the user needs to watch a channel. When a user selects a channel, the device checks the pre-stored information and directly tunes to the correct frequency without performing a full frequency search, thus resolving the contradiction between reliable signal reception and minimizing search time
Solution Approach 2:
The device maintains a buffer of pre-acquired channel information that can be quickly retrieved when needed. This cushioning mechanism ensures that even if the stored information is not perfectly up-to-date, the device has fallback options and does not need to perform time-consuming full searches, balancing reliability with speed
2Adaptability or versatility
If the electronic device performs a full channel search across all broadcast standards, then the device ensures comprehensive channel coverage, but the user cannot watch the broadcast during the search time
Solution Approach 1:
The processor segments the channel search process by dividing it into targeted frequency band searches based on pre-stored channel information rather than performing a monolithic full-frequency search. This segmentation allows the device to maintain comprehensive channel coverage while significantly reducing the time required, as it only searches specific frequency ranges associated with the selected channel number
Solution Approach 2:
The device dynamically adjusts its search strategy based on available information. When channel information is stored, it performs a quick targeted search; when information is unavailable or outdated, it expands the search scope. This dynamic approach ensures comprehensive coverage when needed while maintaining ease of operation when information is available
Data Source
AI summary
An electronic device may include an interface unit, and a processor for storing information related to a plurality of broadcast channels that can be received through the interface unit, receiving a user input for selecting a channel number, identifying, on the basis of the stored information related to the plurality of broadcast channels, a broadcast standard corresponding to the selected channel number if a broadcast signal of a channel corresponding to the channel number selected according to the user input is not received, processing the frequency band of the broadcast signal corresponding to the selected channel number according to the identified broadcast standard, and controlling so that the stored information related to the plurality of broadcast channels is updated according to a processing result.