Digital video converter and read-write method for video series flow
A digital video and converter technology, applied in the field of reading and writing of digital video converters and video streams, can solve the problems of reducing data reading and writing efficiency, image picture or sound errors, etc., to avoid playback quality and improve reading and writing speed. Effect
Inactive Publication Date: 2014-03-26
ALI ZHUHAI CORP
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Problems solved by technology
[0006] In the process of writing the file 101 to the hard disk 13, the operating system performs operations such as copying the file and modifying the index code at least twice between the kernel 11 and the user space 12. Similarly, if the data is read from the hard disk or moved For data, the currently used FUSE file system also needs to perform at least two copy operations between the kernel and user space, thereby reducing the efficiency of data read and write
[0007] In particular, for digital video converters that need to record or play audio and video in real time, especially for digital TV set-top boxes (Set-Top boxes; STB) that can record or play high-definition television (High Definition Television, HDTV) signals, Any slight delay may cause serious errors in video or sound
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[0043] In order for a digital video converter (such as a digital TV set-top box (STB)) to read or write a video stream (video stream) for real-time transmission, it does not need to be in the kernel and user space of the operating system Repeated copying between, the embodiment of the present invention proposes a digital video converter and a method for reading and writing video streams, which can directly use the kernel to read and write storage devices (such as , data in the hard disk). Therefore, this embodiment can effectively improve the performance of the digital video converter when it reads or writes the video stream. In order to make the content of the present invention more comprehensible, the following specific examples are given as examples in which the present invention can indeed be implemented.
[0044] figure 2 It is a block diagram of the digital video converter 20 according to an embodiment of the present invention. Please refer to figure 2 , the digita...
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The invention provides a digital video converter and a read-write method for video series flow. The digital video converter comprises a processing device and a storage device, wherein the processing device is used for operating an operation system, and the operation system is provided with a core and a user space; the storage device is coupled with the processing device and used for storing data. The processing device carries out data reading and writing on the storage device through the core, and the data reading and writing carried out on the storage device by the core do not involve in the user space.
Description
technical field [0001] The invention relates to the data reading and writing technology in the digital video converter, and in particular to a digital video converter and a method for reading and writing video streams. Background technique [0002] The hard disk and the processor are the two main components that are indispensable in the computer system. The hard disk is used to store data, and the processor controls the hard disk through the file system (File system) running in the operating system, and reads or writes data from the hard disk. Commonly used file systems in the market are File Allocation Table (FAT) file system, High Performance File System (HPFS), New Technology File System (NTFS) and other types. file system. At present, NTFS has gradually replaced the FAT file system and HPFS, and NTFS is also the main file system standard used by Microsoft in the operating system Windows NT and later released operating systems. [0003] In view of the fact that many da...
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IPC IPC(8): G06F3/06G06F12/06
CPCH04N21/4325H04N21/4334H04N21/443H04N5/76H04N5/775
Inventor 钱江
Owner ALI ZHUHAI CORP