Content Viewing Account Handoff Between Mobile And Viewing Devices
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Solution Overview
Problem
Existing content distribution systems fail to provide a user-friendly environment for users to view rented content on portable mobile information terminals and do not support viewing of broadcast content on multiple devices while protecting copyright.
Innovation Solution
A content viewing method and system that utilizes a mobile information terminal to transmit user identification and password to a content distribution server, receive an account, and distribute it to a viewing device via short-range wireless communication, enabling seamless viewing and control of content reproduction on multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DRM technology is used to protect copyright by decrypting content with unique viewing device information, then copyright protection is improved, but device complexity and operation difficulty increase
Solution Approach 1:
The patent introduces an account as an intermediary that mediates between the content distribution server and viewing devices. Instead of directly managing complex DRM decryption keys on each device, the system uses accounts to store and manage decryption information centrally, simplifying the complexity while maintaining copyright protection.
Solution Approach 2:
The patent creates copies of decryption information by issuing accounts that can be transferred between devices. Rather than requiring unique complex key management on each viewing device, the system copies account information containing decryption data to authorized devices, reducing operational complexity while preserving copyright security.
2Adaptability or versatility
If content is distributed to multiple viewing devices using DRM technology, then content accessibility is improved, but copyright protection reliability deteriorates
Solution Approach 1:
The system allows copying of account information to multiple viewing devices, enabling content accessibility across devices while maintaining centralized control. The account copy contains necessary decryption information, allowing authorized devices to access content without compromising overall copyright protection through centralized account management.
Solution Approach 2:
The account serves multiple functions: it stores decryption information, enables device authentication, and facilitates content access across different viewing devices. This multi-functional account system provides universal access while maintaining consistent copyright protection mechanisms across the distributed system.
3Ease of operation
If a user views content on a viewing device while holding a mobile information terminal, then user convenience is improved, but system complexity increases
Solution Approach 1:
The system enables self-service by allowing users to automatically transfer their account information from a mobile information terminal to a viewing device through simple proximity-based communication. The account is automatically issued and transferred without requiring complex manual configuration, improving user convenience while the system handles the complexity of authentication and decryption management automatically.
4Ease of operation
If an account is transferred from a mobile information terminal to a viewing device via short-range wireless communication, then operation simplicity is improved, but reliability of account transfer may deteriorate
Solution Approach 1:
The system implements feedback mechanisms to verify successful account transfer between the mobile information terminal and viewing device. The viewing device communicates back to confirm receipt and validity of the account information, ensuring reliable transfer while maintaining simple user operation through automatic verification processes.
Data Source
AI summary
A content viewing method uses a viewing system including a content distribution server distributing contents, a mobile information terminal, and a viewing device reproducing a content. The mobile information terminal transmits user identification information and a user password to the content distribution server. The content distribution server authenticates the mobile information terminal based on the user identification information and the user password. The mobile information terminal transmits an account issue request requesting an account for reproducing a desired content to the content distribution server. The content distribution server issues the account based on the account issue request and transmits the account to the mobile information terminal. The mobile information terminal stores the account. The mobile information terminal transmits the account by short-range wireless communication. The viewing device stores the account received by short-range wireless communication. The viewing device reproduces the desired content using the stored account.