Dispersion Recording and Playback Across Network Storage
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Solution Overview
Problem
Existing methods for recording and playing back moving pictures struggle with storage space shortages, leading to incomplete recordings and difficulties in continuous playback of dispersedly stored data across a network, as there is no mechanism to manage and play back data stored across multiple devices.
Innovation Solution
An apparatus and method that generates a recording schedule, selects recording devices based on user preferences, and disperses recordings to other storage devices when storage space is insufficient, using a content directory service to manage and play back the dispersed data through a playlist.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If broadcast data is recorded in a single storage device based on user preferences, then recording simplicity is maintained, but storage space shortage causes incomplete recordings and loss of information
Solution Approach 1:
The patent segments the recording function across multiple storage devices. When the primary storage device lacks sufficient space, the system automatically divides the recording task and stores portions of the broadcast data in alternative storage devices, ensuring complete recording without overwhelming a single device's capacity.
Solution Approach 2:
The patent introduces a content directory service (CDS) as an intermediary that manages recording information across multiple storage devices. This mediator handles the complexity of dispersed data management, allowing automatic playback without requiring user intervention to locate scattered data files.
2Quantity of substance
If data is dispersedly stored across multiple storage devices, then storage capacity is increased, but playback continuity becomes difficult due to lack of data management mechanism
Solution Approach 1:
The content directory service acts as an intermediary that tracks and manages data locations across multiple storage devices. During playback, this intermediary automatically retrieves dispersed data segments from their respective storage devices and presents them as continuous content to the user, maintaining ease of operation despite distributed storage.
Solution Approach 2:
The content directory service provides universal management functionality across the entire network storage system. It handles multiple functions including tracking data locations, managing playback continuity, and coordinating between different storage devices, making the dispersed storage system as easy to use as centralized storage.
3Device complexity
If recording is performed in a single preferred storage device, then device complexity is minimized, but information is lost when storage space is insufficient
Solution Approach 1:
The recording system segments data storage across multiple devices based on available capacity. When the primary device reaches its storage limit, subsequent data segments are automatically routed to alternative storage devices, preventing information loss while maintaining relatively simple system operation through automated segmentation.
Solution Approach 2:
The system performs preliminary checks of storage device preferences and capacities before recording begins. This preliminary action establishes the recording hierarchy and alternative storage paths in advance, ensuring that information loss is prevented without requiring complex real-time decision-making during the recording process.
Data Source
AI summary
An apparatus and method for controlling a dispersion recording and playback of a moving picture are provided. The apparatus which controls a dispersion record of a moving picture includes, a recording unit that generates a record schedule when a predetermined moving picture is reserved-recorded, generates a reserved-recording-object when it is a reserved-recording time, and dispersedly records the moving picture in another storage device if an error occurs due to insufficient storage space when the moving picture is recorded; a recording-device-selecting unit that selects a recording device based on the preferences of storage devices before the moving picture is reserved-recorded, and a CDS-managing unit that manages recording information of the recorded moving picture, information of moving picture that has been recorded and the recording device.