RECORDING MEDIUM
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
- Filing Date
- 2015-11-20
- Publication Date
- 2026-06-03
AI Technical Summary
Conventional encryption technologies for high-definition media like Blu-ray discs are complex and time-consuming, leading to increased costs and decreased response times for playback devices, making them impractical for widespread consumer use.
A playback method for encrypted video information that uses a system stream file with segments decrypted by different keys, allowing conversion to a format compatible with conventional decoders without redesign, and includes multiplexing I-pictures for rapid random access.
This approach reduces processing load and response delays in playback devices, maintaining compatibility with existing decoders while ensuring secure playback of encrypted content.