Pipeline architecture for content creation for the portable media player from the internet

• US 20060129713A1
• Filed: 12/15/2004
• Published: 06/15/2006
• Est. Priority Date: 12/15/2004
• Status: Abandoned Application

• Current Assignee: ArcSoft, Inc.
• Original Assignee: ArcSoft, Inc.
• Inventors: Xie, Ian Zheng-Yi
• Application Number:
  US11/014,440
• Publication Number:
  US 20060129713A1
• Time in Patent Office: Days
• US Class Current: 710/52
• CPC Class Codes: G06Q 10/10 Office automation; Time management

Abstract

A method for transferring a media file includes receiving the media file from a computer network and writing a first portion of the media file into a first buffer. When the first buffer is full, the method further includes writing a second portion of the media file into a second buffer, reading out the first portion from the first buffer, converting the first portion, and writing the first portion into a third buffer. When the second buffer is full and the first portion has been converted and written into the third buffer, the method further includes writing a third portion of the media file into the first buffer, reading out the second portion from the second buffer, converting the second portion, writing the second portion into a fourth buffer, reading out the first portion from the third buffer, and transferring the first portion to the media player.

Claims

1. A method for transferring a media file in a first format from a computer network to a media player, comprising:

receiving the media file from the computer network;

writing a first portion of the media file into a first buffer;

when the first buffer is full;

writing a second portion of the media file into a second buffer;

reading out the first portion from the first buffer, converting the first portion into a second format, and writing the first portion into a third buffer;

when the second buffer is full and the first portion has been converted and written into the third buffer;

writing a third portion of the media file into the first buffer;

reading out the second portion from the second buffer, converting the second portion into the second format and writing the second portion into a fourth buffer; and

reading out the first portion from the third buffer and transferring the first portion from the third buffer to the media player.

2. The method of claim 1, wherein said writing into the first and the second buffers comprises DMA operations by a network interface card.

3. The method of claim 1, wherein the transferring to the media player comprises a DMA operation by a peripheral interface.

4. The method of claim 1, further comprising:

when the first buffer is full, the second portion has been converted and written in the fourth buffer, and the first portion has been transferred to the media player;

writing a fourth portion of the media file into the second buffer;

reading out the third portion from the first buffer, converting the third portion into the second format, and writing the third portion into the third buffer; and

reading out the second portion from the fourth buffer and transferring the second portion to the media player.

6. The method of claim 1, wherein the writing into the first circular buffer comprises a DMA operation by a network interface card.

7. The method of claim 1, wherein the transferring the media file to the media player comprises a DMA operation by a peripheral interface.

5. A method for transferring a media file in a first format from a computer network to a media player, comprising:

receiving the media file from the computer network;

writing a first portion of the media file into a first circular buffer at a location identified by a first write pointer;

reading out a second portion of the media file from the first circular buffer at a location identified by a first read pointer, converting the second portion into a second format, and writing the second portion into a second circular buffer at a location identified by a second write pointer; and

reading out a third portion of the media file from the second circular buffer at a location identified by a second read pointer and transferring the third portion to the media player.