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Patent Issued for System and Method for Synchronizing Video Indexing between Audio/Video Signal and Data

September 3, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- LG Electronics Inc. (Seoul, KR) has been issued patent number 8813147, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventor is Kang, Bae Guen (Seoul, KR).

This patent was filed on March 24, 2008 and was published online on August 19, 2014.

From the background information supplied by the inventors, news correspondents obtained the following quote: "The present invention relates to broadcast programs, and more particularly, to a system and method for synchronizing video indexing between an audio/video signal and data during recording and playback of a broadcast program.

"Recently, high-speed storage devices such as a hard disc have been implemented in digital television (DTV) receivers to record and playback broadcast programs, thereby developing a digital video recorder/player. Such recorder/player can be considered a personal TV receiver.

"U.S. Pat. No. 5,930,444, entitled 'A simultaneous writing and playback apparatus' discloses a method for a simple write/playback of a broadcast program, and cannot be regarded as a personal TV. Also, a personal video recorder (PVR) has recently been proposed by Tivo and ReplayTV. A PVR is generally designed to enable simultaneous writing of broadcast programs from different broadcasting stations for a maximum of 30 hours by implementing a hard disc in a TV or STB. Thus, the PVR allows a user to select and view a program from a variety of programs.

"However, the PVR, as described above, is more for analog broadcastings and considers only the writing/playback of broadcast programs. Actual functions of a personal TV, for example, timed recordings of programs on an electronic program guide (EPG) using a guide information such as a program and system information protocol (PSIP), and application methods for TV functions related to broadcast programs with respect to standards have not yet been proposed. Also, the PVR in the related art lacks a separate logic for a simultaneous writing/playback, making application to a digital broadcasting difficult.

"FIG. 1 is a simultaneous recording/playback device of a digital broadcasting receiver in the related art for high-definition TV (HDTV) or standard-definition TV (SDTV) multichannel program.

"Referring to FIG. 1, the conventional receiver includes a tuner 1 for tuning a broadcasting signal received through a broadcasting network; a demodulator 2 for demodulating a digital broadcasting signal output from the tuner 1 and outputting a live stream; an encoder 10 for encoding an analog broadcasting signal output from the tuner 1 and outputting transport stream (TS) signals; a data PID filter unit 3 for detecting the TS signals to be stored by filtering the live stream output from the demodulator 2; a time stamp header unit 4 for constructing a header by considering TS signals other than the TS signals detected by the data PID filter unit 3 and by counting figures of a NULL packet, and inserting the header among the partial TS signals; a storage unit 7 for storing the TS signal produced from the time stamp header unit 4 and the TS signal produced from the encoder 10; a stamp control unit 5 for controlling edition and reading of the TS signal stored in the storage unit 7; a storage control unit 6 for managing information stored in the storage unit 7; a multiplexer (MUX) 8 for selecting and outputting one of the TS signals output from the stamp control unit 5 and the demodulator 2; and a decoder unit 9 for decoding a signal selected by the MUX 8.

"The conventional receiver as shown in FIG. 1 can also store general data such as text or Multipurpose Internet Mail Extension (MIME) data, graphic/image data, Hypertext/Extended Markup Language (HTML/XML) data and java applet data. However, when storing a broadcast program using the conventional broadcast program recording/playback apparatus as described above, specific points of a video cannot randomly be accessed. Therefore, a video index based on contents cannot be provided to users."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventor's summary information for this patent: "Accordingly, an object of the present invention is to solve at least the problems and disadvantages of the related art.

"Specifically, an object of the present invention is to provide a more efficient system and method of synchronizing video indexing between an audio/video (A/V) signal and data during recording/playback of a broadcast program.

"Another object of the present invention is to provide a broadcast program recording/playback apparatus and method which enables a user to easily search specified positions of broadcast programs.

"A further object of the present invention is to provide an apparatus and method for improving the functions of a personal TV by inserting synchronization information in specified positions of contents at the time when the contents are produced, thereby enabling a user to easily search specified positions of the contents through an annotation using the synchronization information.

"Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and advantages of the invention may be realized and attained as particularly pointed out in the appended claims.

"To achieve the objects and in accordance with the purposes of the invention, as embodied and broadly described herein, an apparatus for synchronizing video indexing between an A/V signal and data during recording/playback of a broadcast program comprises a contents production and synchronization unit for producing real time data to be synchronized with a broadcast program or producing a live broadcast program to be broadcasted; and a data transmission unit for combining XML TAG information output from the contents production/synchronization unit with the broadcast program, and transmitting the combined data to a broadcasting network in the form of an MPEG transport stream.

"In another embodiment of the present invention, a system for synchronizing video indexing between an A/V signal and data during recording/playback of a broadcast program comprises a receiving system for receiving a broadcast program transmitted from a broadcasting network; simultaneously performing storage and playback of the broadcasting signal; and reading information required for video indexing by analyzing an XML TAG received in synchronization with a specified section through a path for data broadcasting.

"In still another embodiment of the present invention, a method of synchronizing video indexing between an A/V signal and data during recording/playback of a broadcast program comprises detecting an XML TAG by analyzing an XML file among broadcasting information stored in a storage unit; detecting a time offset from the detected XML TAG; converting the detected time offset into a file offset; generating GOP (Group of Pictures) index files from the MPEG transport stream; reading a GOP index file and comparing the GOP index file to the file offset; storing the GOP index file and the XML TAG if the file offset is equal to the GOP index file, and otherwise, reading a next GOP index file and compared to the file offset until a GOP index file which matches the file offset is found for storage with the XML TAG.

"The present invention has a annotation function for synchronization by combining the XML TAG with a specified shot/scene of the MPEG broadcasting stream. Also, the present invention has a video index function for selectively viewing a specified section from the annotation during playback of a stored stream."

For the URL and additional information on this patent, see: Kang, Bae Guen. System and Method for Synchronizing Video Indexing between Audio/Video Signal and Data. U.S. Patent Number 8813147, filed March 24, 2008, and published online on August 19, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8813147.PN.&OS=PN/8813147RS=PN/8813147

Keywords for this news article include: LG Electronics Inc.

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Source: Electronics Newsweekly


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