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Subtitle encoding/decoding method and apparatus

A technology of subtitles and equipment, applied in the field of encoding and decoding subtitles, can solve the problems that no subtitles provide sufficient resolution, are not obvious, and cannot effectively search for specific events.

Inactive Publication Date: 2004-03-31
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this system does not appear to be significantly better than the CD-G system and suffers from some of the same disadvantages
That said, neither system can efficiently search for specific events
Additionally, both systems do not provide sufficient resolution for subtitles when displaying them
The CD-G system only allocates 1 bit to each pixel, and this binary pixel data produces unwanted aliasing and flickering

Method used

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  • Subtitle encoding/decoding method and apparatus
  • Subtitle encoding/decoding method and apparatus
  • Subtitle encoding/decoding method and apparatus

Examples

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Embodiment Construction

[0053] The present invention will now be described with reference to the drawings in which like reference numerals indicate like or corresponding parts.

[0054] decoding equipment

[0055] The data decoding apparatus shown in Fig. 1 employs the present invention, and decodes a reproduced signal. The system controller 14 of the data decoding apparatus causes the signal reproduced from, for example, the optical disc 91 to be processed and sent to the subtitle decoder 7 . The system controller communicates with the subtitle decoder controller 35 (FIG. 2) to decode the subtitles and superimpose them on the decoded video images for display on the television screen.

[0056] The data decoder and demultiplexer 1 receives a digital signal reproduced from, for example, an optical disk, a VCR (Video Cassette Recorder), or the like. The data decoder and demultiplexer preferably error-decode the reproduced signal using error correcting code (ECC) techniques and demultiplex the error-de...

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PUM

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Abstract

Subtitle searching is achieved by encoding a subtitle to be displayed exclusively during a trick playback mode. Addresses for the subtitle to be played back during the trick playback mode are stored on a record medium reserved for addresses. A computer-readable memory directs a computer to retrieve these addresses and locate subtitles to be displayed during the trick playback mode on the record medium. The subtitles are searched by decoding and displaying the subtitles located at the addresses on the record medium to be displayed during the trick playback mode.

Description

technical field [0001] The present invention relates to encoding and decoding subtitles, and more particularly to searching for subtitles on a recording medium. Background technique [0002] Television broadcasts or video reproductions (for example from a laser disc) provide subtitles superimposed on the video image. The problem is that these subtitles are permanently combined with the underlying video image and cannot be manipulated at the receiving (or rendering) end. For example, subtitle searches cannot be performed for information related to a particular scene occurring in a video image or the sound in its corresponding soundtrack. [0003] Because the Graphics Compact Disc (CD-G) records graphics as subcodes, it provides some flexibility in searching for subtitles. However, because CD-G technology is limited to compact disc (CD) applications, it has serious drawbacks, as it is too slow by television standards. That is, CD-G technology is not suitable for handling su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/12H04N5/783H04N5/91H04N5/92H04N5/926H04N7/08H04N7/081H04N19/00H04N19/102H04N19/124H04N19/134H04N19/196H04N19/423H04N19/593H04N19/65H04N19/70H04N19/80H04N19/85H04N19/89H04N19/91H04N19/93
CPCH04N5/9208G11B2220/2537G11B27/005H04N5/926H04N5/783G11B27/034G11B20/10
Inventor 冢越郁夫山下纪之
Owner SONY CORP
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