Digital Broadcast Recording Apparatus Packet-Level Control
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Solution Overview
Problem
Current digital broadcast recording systems lack flexibility in recording and still image capture due to restrictive copy control mechanisms, limiting users' ability to record specific portions of programs, especially when real-time recording is prohibited, leading to impaired usability and wasted storage space.
Innovation Solution
A digital broadcast recording apparatus that detects and records only permitted portions of a program by utilizing a detection unit to identify packets with recording permission information and a control unit to manage recording based on this information, allowing users to record specific scenes or frames while protecting content rights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If copy control restrictions are applied to entire programs, then content protection is improved, but recording flexibility and usability deteriorate
Solution Approach 1:
The patent segments the program content into recordable and non-recordable portions using packet-level identification. Each packet contains a flag indicating whether it can be recorded, allowing the system to selectively record only permitted segments while maintaining overall content protection. This resolves the contradiction by enabling fine-grained control rather than all-or-nothing restrictions.
Solution Approach 2:
The patent applies different recording permissions to different parts of the same program. By embedding recording permission flags in individual packets, the system allows local variations in recording policy within a single program stream, enabling useful information to be recorded while protecting copyrighted content in other portions.
2Reliability
If entire programs are prohibited from recording, then content protection is improved, but user utility and accessibility deteriorate
Solution Approach 1:
The system segments program content into recordable and non-recordable portions, allowing users to access and record useful information (such as promotional details or public domain content) while protecting copyrighted material. This segmentation enables partial recording functionality that maintains both protection and usability.
Solution Approach 2:
The patent introduces an intermediary mechanism (recording permission flags in packets) that mediates between content protection requirements and user accessibility needs. This intermediary layer enables the system to enforce protection policies while still allowing legitimate recording of permitted content.
3Ease of operation
If coarse time-based recording specification is used, then recording simplicity is improved, but recording precision and accuracy deteriorate
Solution Approach 1:
The patent segments the recording control into packet-level units with individual permission flags, replacing coarse time-based control with fine-grained packet-level control. This allows precise identification of recordable content boundaries while maintaining simple user operation through automatic packet filtering.
Solution Approach 2:
The patent replaces the mechanical time-based recording mechanism with a data-driven packet identification system. Instead of relying on timing specifications that require manual adjustment, the system uses embedded flags in the data stream to automatically identify recordable portions, achieving both precision and simplicity.
4Quantity of substance
If all portions of prohibited programs are recorded, then recording completeness is improved, but storage efficiency and copyright compliance deteriorate
Solution Approach 1:
The patent extracts and records only the permitted portions of programs by filtering packets based on their recording permission flags. This extraction process eliminates non-recordable content from the recording stream, achieving storage efficiency while maintaining completeness of permitted content.
Solution Approach 2:
The patent applies partial recording action by recording only the necessary permitted portions rather than entire programs. This partial action approach avoids wasting storage space on protected content while ensuring all recordable content is captured.
Data Source
AI summary
The digital broadcast recording apparatus (100) includes a recording unit (160) for recording digital broadcast, a detection unit (170) for detecting a packet containing information regarding a portion permitted to be recorded from a stream of a program prohibited from being recorded in the digital broadcast, and a control unit (140) for controlling, when the recording unit (160) records the program prohibited from being recorded, the recording unit (160) to record the portion permitted to be recorded based on the information contained in the packet detected by the detection unit (170).