Apparatus and method for transmitting MPEG content over an internet protocol network

• US 20060168133A1
• Filed: 11/10/2005
• Published: 07/27/2006
• Est. Priority Date: 12/07/2004
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Jeong-Seok, Koh, Jun-Ho, Shim, Chang-Sup, Park, Jeong-Rok, Kim, Kwan-Lae, Cha, Do-Hun
• Application Number:
  US11/272,321
• Publication Number:
  US 20060168133A1
• Time in Patent Office: Days
• US Class Current: 709/219
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04N 19/117 Filters, e.g. for pre-processing or post-processing sub-band filter banks H04N19/635
• CPC Class Codes: H04N 19/159 Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/67 involving unequal error protection [UEP], i.e. providing protection according to the importance of the data
• CPC Class Codes: H04N 21/23106 involving caching operations prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568
• CPC Class Codes: H04N 21/2368 Multiplexing of audio and video streams
• CPC Class Codes: H04N 21/238 Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams hybrid fiber coaxial [HFC] networks for downstream channel allocation for video distribution H04L12/2801; flow control in packet networks H04L47/10; real-time communication protocols in data switching networks H04L65/00; scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/64322 IP

Abstract

A method for transmitting packetized multimedia content over a network is disclosed. The method comprises, receiving packetized multimedia content to be transmitted over the network; classifying respective frame of the packetized multimedia content according to an assigned priority by analyzing a frame header of each frame of the packet; separately storing the classified frames in accordance with said classification; and differentially marking the classified frames according to quality-of-service (QoS).

Claims

1. A method for transmitting packetized multimedia content over a network, the method comprising the steps of:

receiving the packetized multimedia content to be transmitted over the network;

classifying respective frame of the packetized multimedia content according to an assigned priority by analyzing a frame header of each frame of the packet;

separately storing the classified frames in accordance with said classification; and

differentially marking the classified frames according to quality-of-service (QoS).

2. The method of claim 1, wherein the step of separately storing the classified frames, further comprises separately storing the classified frames in associated packet classification buffers.

3. The method of claim 1, wherein a bandwidth of the network is considered when differentially marking the classified frames according to QoS.

4. A method for transmitting multimedia content over an Internet protocol network, the method comprising the steps of:

determining a packet type of the multimedia content by analyzing a header of the moving image content to be transmitted;

classifying pictures according to an assigned priority by analyzing a field indicating a picture type of the packet,

storing the classified pictures; and

marking the classified pictures with differentiated values before transmission.

5. The method of claim 4, further comprising the step of marking an intra picture with a value guaranteeing a highest quality-of-service (QoS) according to priority before transmission.

6. The method of claim 4, further comprising the steps of:

assigning a service type field of an Internet protocol header of the multimedia content as a differentiated service code point (DSCP) field; and

marking the DSCP field with a differentiated value before transmission.

7. An apparatus for transmitting multimedia content over a network, the apparatus comprising:

an extractor for receiving packetized multimedia content to be transmitted, and classifying frames according to priority by analyzing a header of the multimedia content;

a plurality of buffers for separately storing the classified frames;

a marker for marking the classified frames with differentiated codes according to the priority; and

a quality-of-service (QoS) management block for generating the codes differentiated for the individual frames taking a condition of the network into consideration.

8. An apparatus for transmitting multimedia content over an Internet protocol network, the apparatus comprising:

an extractor for determining a packet type of the multimedia content by analyzing a header of the moving image content to be transmitted;

a plurality of buffers for separately storing pictures according to an assigned priority by analyzing a field indicating the picture type; and

a marker for marking the classified pictures with differentiated codes according to the priority.

9. The apparatus of claim 8, wherein one of said plurality of buffers is an intra-picture buffer for removing redundancy in the current frame.

10. The apparatus of claim 8, wherein one of said plurality of buffers is a predictive-picture buffer for removing time redundancy with a previous frame and redundancy in the current frame.

11. The apparatus of claim 8, wherein one of said plurality of buffers is a bidirectional predictive-picture buffer for removing time redundancy with a previous frame or a next frame and redundancy in the current frame.

12. The apparatus of claim 8, wherein the marker marks each classified picture with a differentiated code according to the priority taking a condition of the Internet protocol network into consideration.

13. The apparatus of claim 12, wherein the each of the differentiated codes used to mark each classified picture indicates a particular quality-of-service (QoS) classified according to picture priority, wherein the differentiated codes are stored in a QoS management block.

14. The apparatus of claim 13, wherein the marker marks a priority of an intra picture for removing redundancy in the current frame with a differentiated code indicating the highest QoS.