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Recording device, program and integrated circuit

一种记录设备、视频数据的技术，应用在记录载体编辑、数字记录/再现、电子编辑数字化模拟信息信号等方向，达到高安全性的效果

Inactive Publication Date: 2009-05-27
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is unacceptable for user B whose record preset was rejected

Method used

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  • Recording device, program and integrated circuit
  • Recording device, program and integrated circuit
  • Recording device, program and integrated circuit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0042] The following description relates to the recording apparatus of the first embodiment of the present invention.

[0043] (data structure)

[0044] The following section describes the logical format used in the recording apparatus related to the first embodiment of the present invention to perform recording operations.

[0045] Figure 1 illustrates the logical format. As a result of the recording operation performed by the recording device, a video object (VOB) sequence, a management information sequence, and a unit information sequence are stored in a storage medium such as a hard disk (HD) or a digital versatile disk (DVD).

[0046] As indicated by the dotted line hs1, the VOB sequence is composed of a plurality of VOBs (VOB#1, VOB#2, and VOB#3).

[0047] A VOB is video data, more specifically, a program stream obtained by interleaving and multiplexing a video stream and an audio stream. A video stream consists of compressed and encoded sets of image data. Each set ...

no. 2 example

[0127] According to the first embodiment, a VOB is deleted from the HD only when the reference counter for the VOB indicates zero, as a result of deletion operations performed by all users who recorded the VOB. According to the second embodiment, restrictions on VOB deletion are relaxed. Specifically, when the reference counter on the VOB indicates one or less, and a backup copy of the VOB stored in the HD is created on the DVD, any user is allowed to delete the VOB.

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PUM

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Abstract

When receiving a record presetting from the record presetting unit 8, the detection unit 10 compares the received record presetting with a record presetting that has been received earlier, to detect, if time periods indicated by the record presettings overlap, an overlapping time portion and one or more non-overlapping time portion. The detection unit 10 then newly generates record presettings in one-to-one correspondence with the overlapping and non-overlapping time portions. The recording unit 11 performs a recording operation with reference to the record presettings newly generated by the detection unit 10. Thus, the recording unit 11 can perform a recording operation as described by the original record presettings, which indicate the time periods that overlap. The generation unit 12 generates, on a storage medium, Cell information for each of the original record presettings, and appends user information to the Cell information.

Description

field of invention [0001] The present invention relates to a recording device, a program, and an integrated circuit for writing video data into a storage medium. In particular, the present invention relates to techniques for realizing multi-user management of recording devices. technical background [0002] In recent years, recording devices including mass storage media have been introduced to the market. This tends to increase the number of instances where multiple users share one recording device. [0003] When multiple users share a recording device, a problem often arises that one user mistakenly deletes or edits video data recorded by another user. [0004] In order to solve this problem, multi-user management currently employed in operating systems such as UNIX (registered trademark) and Windows (registered trademark) can be applied to recording devices to limit access of individual users to each set of video data. [0005] In this way, each set of video data can on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B27/034G11B27/10
CPCG11B27/034G11B27/10G11B20/10
Inventor 堀隆一山本洋一冈元秀治松浦康之川崎雅弘渡边旭洋
Owner PANASONIC CORP