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File reading method and embedded system applying same

An embedded system and file reading technology, which is applied to TV system components, special data processing applications, electrical components, etc., can solve problems such as hardware system burden, reduce hardware complexity and cost, and avoid hardware system extremes. The effect of a large burden

Inactive Publication Date: 2013-09-11
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a file reading method and an embedded system using the method to solve the problem that the hardware system is greatly burdened by the frequent switching of the table cache when playing music and photos at the same time

Method used

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  • File reading method and embedded system applying same
  • File reading method and embedded system applying same
  • File reading method and embedded system applying same

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Embodiment Construction

[0018] See image 3 , which is a functional block diagram of the software configuration developed by the present invention and can be executed in the embedded system 3. The present invention improves the existing file system application programming interface, so the improved file developed by the present invention The system application programming interface 31 is provided with multiple environment instances (EnvironmentInstance) 311-31n, and each environment instance has its own table cache (TableCache) 3111-31n1. Preferably, the number n of the environment instances (EnvironmentInstance) 311-31n can be consistent with the number of files that the embedded system 3 wants to support and can read simultaneously. For example, when the specification requirements of the embedded system 3 need to support playing video files and music files at the same time, then the improved file system API 31 can be set as two environment instances in the compilation (compile) stage , if the spec...

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Abstract

The utility model relates to a file reading method and an embedded system applying same. A multimedia application program is executed on the embedded system, which is provided with a system memory. The method comprises the following steps: a coping multimedia application program provides a first table cache so as to register the first link table data corresponding to a first file for a first file reading command sent by a movable memory device, and the first table cache is positioned at the first block of the system memory; and the coping multimedia application program provides a second table cache so as to register the second link table data corresponding to a second file for a second file reading command sent by the movable memory device; and the second form cache is positioned at the second block of the system memory.

Description

technical field [0001] The invention relates to a file reading method and an embedded system applying the method. Background technique [0002] With the rapid development of information technology, the functions of digital home appliances are becoming more and more powerful. Digital TV is an obvious example, and it can directly read and play multimedia files in the flash drive and play the role of a digital photo frame. A rather handy feature. Such as figure 1 As shown, the machine side of the digital TV 10 is provided with a group of USB connection ports 100, providing the user with a flash drive 11 that stores music files and digital photo files, and the digital TV 10 can be connected via the USB. Read music files and digital photo files for playback, so that users can listen to music while viewing photos. [0003] And in order to achieve the above-mentioned functions, the operating system of the existing digital TV will allow the application program to read the music f...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30H04N5/44
Inventor 杨忠理
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD