Multimedia chip adaptation mechanism for mobile phone

A multimedia chip and mechanism technology, applied in telephone structure, electrical components, transmission system, etc., can solve problems such as increased workload, unfavorable system stability, difficult chip and function expansion, etc., to prevent conflicts and good scalability Effect

Inactive Publication Date: 2009-08-05
TECHFAITH INTELLIGENT HANDSET TECH BEIJING
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AI Technical Summary

Problems solved by technology

[0002] Many mobile phones now have multimedia chips that can support functions such as cameras, MP3, and MP4. Some mobile phones even have multiple multimedia chips. The interaction with the application layer is often that each application layer directly calls the driver of the chip. In this way, when the multimedia chip needs to be replaced, a lot of changes must be made from the application layer to the bottom layer, which increases the workload and is not conducive to the stability of the system; the implementation function of each multimedia chip is not organized and clear, When different tasks perform multimedia operations at the same time, the conflict handling mechanism will be very complicated, and it is not easy to expand more chips and functions

Method used

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  • Multimedia chip adaptation mechanism for mobile phone

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Embodiment Construction

[0008] See figure 1 , is the processing flow chart of the multimedia adaptation layer of the present invention, and the flow chart describes the specific flow of mobile phone functions such as refreshing the screen, taking pictures, video recording, and controlling the backlight of the LCD screen. Swipe the screen: the application layer modules 101, 102, 103 send messages to the multimedia chip adaptation layer HMCHIP104, and simultaneously put the data to be swiped into the data buffer 107 of the LCD screen, and the HMCHIP104 calls the LCD screen driver 108 through the multimedia controller 106 to realize Swipe screen operation. Taking photos and recording videos: the application layer module 101 sends a message to the multimedia chip adaptation layer HMCHIP104, and the HMCHIP104 calls the camera driver 109 through the multimedia controller 106, compresses the data into a corresponding format through the software encoding module 105, and calls the file system 110 to convert t...

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Abstract

The invention discloses a mobile phone multimedia chip adaptation mechanism. By adopting a defined unified structure, an application layer can control fixed interfaces through a message mechanism, and the device drivers of different chips can be logged in the structure, therefore, the application layer is not required to be changed when multimedia chips are required to be changed or added. As the adaptation layer and the application layer are operated through the message mechanism, the conflict among different processes can be effectively prevented, simultaneously the adaptation layer adopts a set of session management mechanism, and classification management is carried out to different application operations, so that a system can simultaneously support various multimedia operations on the premise of hardware support. As session management is added, a multimedia framework has better expansibility, namely conflict protection is carried out to different multimedia operations, and simultaneously flow protection is also carried out to each media operation.

Description

technical field [0001] Mobile phones and other handheld devices with multimedia chips Background technique [0002] Many mobile phones now have multimedia chips that can support functions such as cameras, MP3, and MP4. Some mobile phones even have multiple multimedia chips. The interaction with the application layer is often that each application layer directly calls the driver of the chip. In this way, when the multimedia chip needs to be replaced, a lot of changes must be made from the application layer to the bottom layer, which increases the workload and is not conducive to the stability of the system; the implementation functions of each multimedia chip are not organized and clear, When different tasks perform multimedia operations at the same time, the conflict handling mechanism will be very complicated, and it is not easy to expand more chips and functions. Contents of the invention [0003] Aiming at the above-mentioned defects, the technical problem solved by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/02H04B1/40H04M1/02
Inventor 黄志波王锐解澄
Owner TECHFAITH INTELLIGENT HANDSET TECH BEIJING
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