Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for playing video file in mobile phone

A technology for playing video and video files, applied in electrical components, telephone communication, branch equipment, etc., can solve the problems of asynchrony of sound and picture, low playback frame rate, and unsmooth playback, so as to achieve smooth playback of sound and video, smooth picture, and smooth playback. Sound and image synchronization, effects that avoid playback effects

Inactive Publication Date: 2010-01-06
SHANGHAI WINGTECH ELECTRONICS TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, few mobile phones in the existing market can really meet the above requirements. Most mobile phones will have problems such as low playback frame rate, unsmooth playback, out-of-sync audio and picture, and even some video files cannot be played.
Some of these problems are limited by the hardware of the solution company, some are limited by the capability of the DSP decoding chip, and some are due to the lack of reasonable configuration of the corresponding components inside the mobile phone, and the inability to maximize the functions of the corresponding components inside the mobile phone

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for playing video file in mobile phone
  • Method for playing video file in mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the present invention provides a kind of method that is applied to the playing video file of mobile phone, comprises the following steps:

[0017] a. Set the CCIR timing sequence output by the DSP decoding chip to adapt to the baseband chip platform to ensure that the image can be displayed correctly on the display screen. The DSP decoding chip and the baseband chip realize the basic communication function through SPI, and realize the image transmission function through the CCIR interface; The baseband chip communicates with the memory card through SPI;

[0018] b. Allocate a certain amount of space in the memory card as the first cache space for the DSP decoding chip to read and analyze video files. The size of the first cache space of the memory card is 256KB or 512KB. In order to make the video playback smoother, this The preferr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for playing a video file in a mobile phone, which comprises the following steps: setting a CCIR time sequence output by a digital signal processor (DSP) decoding chip; allotting a first buffer space in a storage card; reading a video file in the first buffer space of the storage card; analyzing the video file and dividing the video file into Audio and Video; respectively transmitting the Audio and the Video in an RAM in the DSP decoding chip; before Audio and Video data are transmitted to the DSP decoding chip, judging whether the buffer space in the DSP decoding chip is full or not; if the buffer space in the DSP decoding chip is full, not needing to transmit data to the DSP decoding chip and reading an extra video file in the buffer space of the storage card under such condition; and playing the video file. The invention can improve the quality of the video file played by a mobile phone and synchronize the played sound and a played image.

Description

technical field [0001] The invention relates to a method for playing video files applied to mobile phones. Background technique [0002] With the development of multimedia technology, mobile phones that can directly play video formats such as RMVB and AVI have gradually appeared in the mobile terminal market. The emergence of such mobile phones has greatly facilitated end users, who can watch wonderful movies anywhere. [0003] It is generally believed that this type of mobile phone must meet the following requirements: the frame rate of playing images must reach 25fps or above, the playback of sound and video should be smooth, and the playback of sound and images should be synchronized. However, there are few mobile phones in the existing market that can really meet the above requirements. Most mobile phones have problems such as low playback frame rate, unsmooth playback, out-of-sync audio and picture, and even some video files cannot be played. Some of these problems ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/725H04M1/72403H04M1/72442
Inventor 乔连伟程力刚
Owner SHANGHAI WINGTECH ELECTRONICS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com