Inserting Metada For Trick Play In Video Transport Stream

• US 20080120637A1
• Filed: 09/23/2005
• Published: 05/22/2008
• Est. Priority Date: 09/23/2004
• Status: Active Grant

• Current Assignee: InterDigital Madison Patent Holdings (InterDigital, Inc.)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Deiss, Michael Scott
• Granted Patent: US 7,996,871 B2
• Time in Patent Office: Days
• US Class Current: 725/32
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

A video receiver system is conditioned for extracting trick play metadata, corresponding to video information, from a received transport stream. The video receiver system identifies the presence of such metadata in response to information present in the header of a transport packet. The video receiver after extracting metadata stores data corresponding to such metadata in a table (175). When implementing a trick play function during video playback, video receiver system (20) uses the data in the table to implement a desired trick play function. Inserting metadata in transport stream using transport priority bit or payload or transport packets.

Claims

1. A method for transmitting video information in the format of a packetized data stream comprising the steps of:

formatting video information (115) into a transport packet,

inserting metadata (115) into said transport packet to support a trick play function, wherein said metadata describes an attribute of said video information.

2. The method of claim 1, wherein said metadata is inserted into a transport header of said at least one data transport packet.

3. The method of claim 2, wherein said metadata is inserted into the transport priority bit of said transport packet header.

4. The method of claim 1, wherein an indicator flag is activated in a transport header of said at least one transport packet as to indicate said metadata is present in a payload of said at least one transport packet.

5. The method of claim 1, wherein said at least one transport packet contains with data representing at least one command, and

said at least one command is selected from at least one of:

a time code of a current frame, a time code of a program start, a time code of a last discontinuity, a time code of a program end, information related of a current frame size, information related to current program size, information indicating a video frame in said at least one transport packet, a trick mode key frame, a decoding reference frame, a discontinuous frame, and information representing a still frame and the number of seconds said frame is to be displayed.

6. A method for receiving video information in the format of a packetized data stream comprising the steps of:

processing a transport packet (160) from said packetized data stream as to extract trick play related metadata that corresponds to said video information in said transport packet; and

storing information indicative of said trick play metadata (175) as to support a trick play function.

7. The method of claim 6 comprising the additional steps of:

accessing said information indicative of said trick play metadata, and

using said information indicative of said trick play metadata to implement said trick play function.

8. The method of claim 6, wherein said stored information is stored in a table.

9. The method of claim 6, comprising the additional step of:

storing data from said transport packet in a storage device, wherein said stored data is at least one of;

the transport packet, video information decoded from said transport packet, video information that is decoded from said transport packet and is selected in view of the trick play metadata that is extracted from said transport packet.

10. The method of claim 6, wherein said extraction of said metadata is performed in view of an indicator flag indicating the presence of said trick play metadata in said transport packet.

11. The method of claim 6, wherein said extraction step extracts said trick play information from a single bit located in a header of said transport packet.

12. The method of claim 11, wherein said extraction step is repeated for a plurality of transport packets as to fill at least one entry in a table of metadata.