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Method and apparatus for determining start of user data in one data block of optical disc

A start position, data block technology, applied in the direction of optical recording/reproduction, data recording, auxiliary data arrangement, etc., can solve complex hardware design, unable to determine the start address information of the data block, and the register cannot Normal operation and other issues to achieve the effect of reducing complexity

Inactive Publication Date: 2012-12-05
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the above description, if the position of the third synchronization pattern FS0 cannot be known, the start address information of the data block cannot be determined. Therefore, when data needs to be moved from the register to the dynamic random access memory (DRAM ) to decode the data, if there is no proper start address information, the register may not function normally; even if the start address information can be obtained based on the previous address or the next address, however, this This approach will require a more complex hardware design, so it is obviously very important to propose a novel detection mechanism to identify the starting location of user data stored in each data block (data cluster)

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  • Method and apparatus for determining start of user data in one data block of optical disc
  • Method and apparatus for determining start of user data in one data block of optical disc
  • Method and apparatus for determining start of user data in one data block of optical disc

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[0017] Certain terms are used in the description and claims to refer to particular elements. Those of ordinary skill in the art will appreciate that manufacturers may refer to the same element by different terms. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means. device.

[0018] see figure 2 , figure 2 It is a schemati...

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Abstract

A first method for determining the start of user data in a data block on an optical disc is disclosed. The first method includes: setting a plurality of predetermined time intervals; detecting a first sync pattern and a second sync pattern; and utilizing one of the predetermined time intervals and a time interval between the first sync pattern and the second sync pattern to determine the start of the user data. In addition, a second method for determining the start of user data in a data block on an optical disc is disclosed. The second method includes: detecting a first sync pattern; when the first sync pattern is found, detecting a sync ID of the first sync pattern; and when the sync ID of the first sync pattern is found, determining the start of the user data according to the sync ID of the first sync pattern.

Description

technical field [0001] The present invention relates to a sync pattern detection mechanism, especially a method for detecting the start position of user data in a Blu-ray disc (Blu-ray disc) and related devices. Background technique [0002] With the research and development of optical storage technology, it has developed into a new generation of optical discs. Among them, Blu-ray discs (Blu-ray discs), which can provide a large amount of data storage space and have better audio-visual quality, belong to this wave of optical storage technology revolution. core product. [0003] In the Blu-ray Disc format, it has two sync marks (sync marks) or sync patterns (sync patterns) in the data start area (run-in area), and in the data blocks (such as data clusters ( There is a sync token or sync pattern before the start position of cluster)), the above sync patterns are generally as follows respectively figure 1 It is represented by the sync identification data (sync ID) sync_1, syn...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/12G11B7/00
CPCG11B20/1217G11B7/00736G11B2220/2541G11B2020/1287
Inventor 杨金彬
Owner MEDIATEK INC