Media Gateway

• US 20070297427A1
• Filed: 01/28/2005
• Published: 12/27/2007
• Est. Priority Date: 09/22/2004
• Status: Active Grant

• Current Assignee: Edito Co., Ltd.
• Original Assignee: icube Corporation
• Inventors: Cho, Keun-Ho
• Granted Patent: US 8,931,027 B2
• Time in Patent Office: Days
• US Class Current: 370/401
• CPC Class Codes: H04L 12/2854 Wide area networks, e.g. public data networks
• CPC Class Codes: H04N 11/20 Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
• CPC Class Codes: H04N 13/139 Format conversion, e.g. of frame-rate or size
• CPC Class Codes: H04N 19/12 Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
• CPC Class Codes: H04N 19/40 using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• CPC Class Codes: H04N 21/234309 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo conversion of standards in analog television systems H04N7/01
• CPC Class Codes: H04N 21/4402 involving reformatting operations of video signals for household redistribution, storage or real-time display details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764
• CPC Class Codes: H04N 21/440218 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01
• CPC Class Codes: H04N 7/01 Conversion of standards , e.g. involving analogue television standards or digital television standards processed at pixel level
• CPC Class Codes: H04N 7/0125 one of the standards being a high definition standard
• CPC Class Codes: H04N 7/52 Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal assembling of a multiplex stream by combining a video stream with other content or additional data, remultiplexing of multiplex streams, insertion of stuffing bits into the multiplex stream, assembling of a packetised elementary stream at server side H04N21/236; disassembling of a multiplex stream, remultiplexing of multiplex streams, extraction or processing of Service Information, disassembling of packetised elementary stream at client side H04N21/434

Abstract

Disclosed is a media gateway that processes AV signals offered over various channels into AV stream data and wirelessly transmits the AV stream data to a client such as PC or TV The media gateway includes: a broadcast signal receiver for selecting a broadcast signal and dividing the selected broadcast signal into video and audio signals; a video decoder for decoding the video signal into a displayable image signal; an A/D converter for digitally converting the audio signal; an encoder for encoding the digitally converted audio signal and the image signal; a data communication unit for transmitting/receiving AV stream data and a client control command to/from a data communication unit on a client side; and a main processor for controlling a tuner in the broadcast signal receiver according to a client control command conforming to HTTP standards received through the data communication unit and transmitting AV stream data obtained by encoding a broadcast signal of a channel selected by the tuner to a client side.

Claims

1. A media gateway comprising:

a broadcast signal receiver for selecting a broadcast signal and dividing the selected broadcast signal into video and audio signals;

a video decoder for decoding the video signal into a displayable image signal;

an A/D converter for digitally converting the audio signal;

an encoder for encoding the digitally converted audio signal and the image signal;

a data communication unit for transmitting/receiving AV stream data and a client control command to/from a data communication unit on a client side; and

a main processor for controlling a tuner in the broadcast signal receiver according to a client control command conforming to HTTP standards received through the data communication unit and transmitting AV stream data obtained by encoding a broadcast signal of a channel selected by the tuner to a client side.

2. The media gateway of claim 1, wherein the main processor comprises:

a streaming engine for outputting AV stream data obtained by segmenting AV encoding data outputted from the encoder into frames and assigning timestamps to the frames;

a communication protocol processor for interpreting the client control command conforming to HTTP standards, processing the AV stream data according to HTTP or RTP standards, and transmitting the processed AV stream data to the data communication unit;

a tuner controller for controlling the tuner;

an encoder controller for controlling the encoder; and

a command processor for processing the client control command interpreted in the communication protocol processor.

3. The media gateway of claim 1, wherein the data communication unit includes a LAN card and/or a wireless LAN card.

9. The media gateway of claim 2, wherein the data communication unit includes a LAN card and/or a wireless LAN card.

4. A media gateway comprising:

a broadcast signal receiver for selecting a broadcast signal and dividing the selected broadcast signal into video and audio signals;

a video source selection unit for selecting either a video signal input terminal or a video signal output terminal of the broadcast signal receiver;

an audio source selection unit for selecting either an audio signal input terminal or an audio signal output terminal of the broadcast signal receiver;

a video decoder for decoding an output of the video source selection unit into a displayable image signal;

an A/D converter for digitally converting an output of the audio source selection unit;

an encoder for encoding the digitally converted audio signal and the image signal;

a data communication unit for transmitting/receiving AV stream data and a client control command to/from a data communication unit on a client side; and

a main processor for selecting the video and audio sources according to a client control command conforming to HTTP standards received through the data communication unit, processing AV stream data obtained by encoding the selected source according to HTTP or RTP standards, and transmitting the processed AV stream data to a client side through the data communication unit.

5. The media gateway of claim 4 further comprising an IR transmitter for remotely controlling an AV source providing unit connected via a cable to the video signal input terminal.

6. The media gateway of claim 4, wherein the video signal input terminal includes input terminals for inputting CVBS signal and/or S-Video signal.

7. The media gateway of claim 4, wherein the main processor comprises:

a streaming engine for outputting AV stream data obtained by segmenting AV encoding data outputted from the encoder into frames and assigning timestamps to the frames;

a communication protocol processor for interpreting the client control command conforming to HTTP standards, processing the AV stream data according to HTTP or RTP standards, and transmitting the processed AV stream data to the data communication unit;

a tuner controller for controlling a tuner in the broadcast signal receiver;

an encoder controller for controlling the encoder;

a source selection controller for controlling the video source selection unit and the audio source selection unit; and

a command processor for processing the client control command interpreted in the communication protocol processor.

8. The media gateway of claim 5, wherein the main processor comprises:

a streaming engine for outputting AV stream data obtained by segmenting AV encoding data outputted from the encoder into frames and assigning timestamps to the frames;

a communication protocol processor for interpreting the client control command conforming to HTTP standards, processing the AV stream data according to HTTP or RTP standards, and transmitting the processed AV stream data to the data communication unit;

a tuner controller for controlling a tuner in the broadcast signal receiver;

an encoder controller for controlling the encoder;

an IR transmission controller for controlling the IR transmitter; and

a command processor for processing the client control command interpreted in the communication protocol processor.

10. The media gateway of claim 5, wherein the video signal input terminal includes input terminals for inputting CVBS signal and/or S-Video signal.