Broadcast Recording Apparatus One-Segment Transfer
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Solution Overview
Problem
Mobile receiver apparatuses face challenges with power consumption and limited recording capacity for terrestrial digital broadcasts, and existing solutions complicate data transfer and violate copyright protection rules.
Innovation Solution
A recording apparatus that receives and demodulates both high-quality 13-segment and low-quality one-segment digital broadcast data, automatically transferring the one-segment data to a mobile receiver via Bluetooth when connected, while adhering to 'Copy Once' copyright protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If one-segment broadcast is received by mobile receiver apparatus, then power consumption increases and recording capacity is exceeded, but if 13-segment broadcast is received, then image quality is too high for mobile display
Solution Approach 1:
The broadcast signal is segmented into different bandwidth portions (one-segment and 13-segment). The recording apparatus receives both segments separately, demodulates them independently, and records both versions. The mobile receiver can then select the appropriate segment (one-segment for mobile, 13-segment for fixed) based on the connection type, optimizing power consumption and image quality for each scenario.
2Ease of operation
If manual switching between 13-segment and one-segment reception is implemented, then device complexity increases, but if automatic selection is used, then ease of operation improves
Solution Approach 1:
The recording apparatus automatically detects whether a mobile receiver or fixed receiver is connected and autonomously selects which broadcast segment to transfer (one-segment for mobile, 13-segment for fixed). This self-service mechanism eliminates the need for manual switching operations by users while maintaining optimal performance for each device type.
3Adaptability or versatility
If program data is transferred to multiple devices, then copyright protection is violated, but if data is not shared, then adaptability decreases
Solution Approach 1:
The system creates separate copies of program data for different receiver types (mobile and fixed receivers) from the original broadcast signal. The recording apparatus records both one-segment and 13-segment versions separately, and transfers appropriate copies to connected devices. This copying approach enables data sharing and adaptability while maintaining copyright protection by avoiding unauthorized redistribution of a single master copy.
Data Source
AI summary
A recording apparatus receives, with respect to an identical program, high image quality digital broadcasting data and low image quality digital broadcasting data, records the high image quality program data and the low image quality program data in a recording medium. When a cellular phone device is connected to the recording apparatus, the recording apparatus transfers the recorded low image quality program data to the cellular phone device via a communication interface. The recording apparatus transmits, to the portable cellular phone device, management information of the end of playback and deletion of the first program data whose program is identical to that of the transferred second program data.