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Multistage management structure and method for buffer

A buffer and segment technology, which is applied to machine execution devices, memory address/allocation/relocation, etc., can solve the problems of repeated reading of optical heads and reducing the efficiency of optical drives.

Inactive Publication Date: 2007-05-16
LITE ON IT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a track jump action will not only cause the optical head to repeatedly read the same data in the existing method, but will also greatly reduce the efficiency of the optical drive

Method used

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  • Multistage management structure and method for buffer
  • Multistage management structure and method for buffer
  • Multistage management structure and method for buffer

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Embodiment Construction

[0021] Since the existing buffer management unit does not hit the data, Buffer_ptr, Decode_ptr and Transmit_ptr will all point to the initial block (B 0 ), resulting in the situation that the data stored in the buffer is forced to be discarded. The present invention proposes a multi-section management structure of the buffer to solve the above-mentioned problems.

[0022] In the present invention, an initial block register (hereinafter referred to as Init_BLK) and a memory unit are additionally provided in the buffer management unit. In this way, the buffer can loop between Init_BLK and End_BLK, and the memory unit can be used to backup (Backup) the contents of the Buffer_ptr, Decode_ptr, Transmit_ptr, Init_BLK, and End_BLK that are in use depending on the situation. And restore the contents of another set of Buffer_ptr, Decode_ptr, Transmit_ptr, Init_BLK and End_BLK. The buffer management unit can use the function of realizing multi-section management.

[0023] 3(a) and 3(b) are ...

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Abstract

In the multistage management structure of buffer, one initial block register and one memory unit are provided, and the buffer managing unit may circulate between the initial block register and the final block register. When the optical head jump off the original orbit to read data in other orbit during the read process, the initial block register and the final block register may have their content reset while the original content being backed up to the memory unit. Thus, the data of the original data are maintained into the buffer without loss. When the data in original orbit need to be read for the second time, only the memory unit needs restore the content in the register. Therefore, the present invention can raise the data management efficiency in the buffer inside the CD driver.

Description

Technical field [0001] The invention relates to a buffer management structure and management method, in particular to a multi-section management structure and management method for buffers in an optical drive. Background technique [0002] With the advancement of computer hardware and network technology, there is an increasing demand for data storage media, especially multimedia data. For example, video or music data, even if processed by compression technology, still occupies a considerable amount of space. Therefore, no effort is spared in the development of data storage media, such as MO (magneto-optical disk), recordable optical disk (CD-R, CD-RW) or high-capacity floppy disk (JAZZ). Especially for the optical disc family, due to the popularity of Audio CD and CD-ROM, recordable optical discs (CD-R, CD-RW) are also very easy to enter the consumer market. In particular, with the rapid decline in the price of CD-recorders and recordable discs, as well as the bonus data that CD-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/08G06F9/30
Inventor 陈凌风
Owner LITE ON IT