Broadcast Tuner Wireless Channel Interference Avoidance
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Solution Overview
Problem
Frequency interference between tuners and wireless communication modules in broadcast signal receiving devices leads to garbled screens and compromised image quality, especially when both are used simultaneously.
Innovation Solution
A broadcast signal receiving apparatus with a tuner and a communicator that selects a channel with minimal interference by determining the frequency interference section based on the sampling frequency and adjusting wireless communication to avoid these interference-prone channels, using methods like Wi-Fi, Bluetooth, or ZigBee, and incorporating a full-band capture tuner to ensure optimal channel selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tuner and wireless communication module are used simultaneously, then the device can provide both broadcast signal reception and wireless communication functions, but frequency interference occurs causing garbled screens and data
Solution Approach 1:
The patent applies preliminary action by pre-defining frequency interference sections between the tuner's sampling frequency and wireless communication frequency bands during the device setup phase. The processor stores these interference sections in advance and uses them to determine available channels for wireless communication, preventing interference before it occurs during simultaneous operation of the tuner and communicator.
2Productivity
If wireless communication is performed on channels close to the tuner's sampling frequency, then communication efficiency is improved, but image quality deteriorates due to frequency interference
Solution Approach 1:
The patent applies parameter changes by dynamically selecting wireless communication channels based on the tuner's current sampling frequency. The processor calculates frequency interference sections by comparing the sampling frequency with available wireless communication channels, then selects channels that fall outside these interference sections, thereby maintaining both communication efficiency and image quality through adaptive parameter adjustment.
3Device complexity
If the tuner uses a fixed sampling frequency, then the tuner operation is simplified, but wireless communication channel selection becomes limited due to frequency interference
Solution Approach 1:
The patent applies dynamics by making the wireless communication channel selection adaptive to the tuner's sampling frequency. Although the tuner operates with a fixed sampling frequency for simplicity, the processor dynamically determines which wireless communication channels are available by calculating frequency interference sections and selecting channels that do not overlap with the sampling frequency, thereby providing flexibility in channel selection without complicating tuner operation.
Data Source
AI summary
A broadcast signal receiving apparatus comprises a tuner configured to be tuned to a locking frequency selected corresponding to a broadcast signal and receive the broadcast signal at the selected locking frequency; a communicator configured to perform wireless communication with an external apparatus through a plurality of channels different in a frequency band from each other; and a processor configured to control the communicator to perform the wireless communication through a channel having less interference between the selected locking frequency and the frequency band among the plurality of channels. According to an exemplary embodiment, the frequency interference with the wireless communication can be avoided in advance in terms of receiving the broadcast signal. Further, image quality can be guaranteed even when the wireless communication is used, in terms of receiving the broadcast signal.