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Subimage reproducing control device and method therefor

A technology of reproduction control and sub-picture, which can be used in image communication, TV, color TV, etc., and can solve problems such as time management difficulties.

Inactive Publication Date: 2004-05-19
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the ordinary reproduction of such an optical disk, when switching to, for example, still picture reproduction or slow-motion reproduction, it is extremely difficult to manage the time for synchronously reproducing the above-mentioned sub-picture and main picture.
Moreover, in the ordinary reproduction of such an optical disc, when switching to, for example, forward fast forward or reverse fast forward, it is also extremely difficult to manage the time for synchronously reproducing the above-mentioned sub-picture and main picture.

Method used

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  • Subimage reproducing control device and method therefor
  • Subimage reproducing control device and method therefor
  • Subimage reproducing control device and method therefor

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Embodiment Construction

[0080] Embodiments of the present invention will be described below with reference to the drawings.

[0081] First, what kind of data is recorded on the information recording medium will be described.

[0082] FIG. 1 schematically shows a recorded data structure of an optical disc 100 as an example of an information recording medium. The optical disc 100 is, for example, a double-sided laminated disc with a storage capacity of 5 Gbytes on one side, and a plurality of data tracks are arranged between the lead-in area on the inner peripheral side of the disc and the lead-out area on the outer peripheral side of the disc. Each track is composed of a plurality of logical sectors, and various information (digital data suitable for compression) are stored in each sector.

[0083] FIG. 2 shows the volume space of the optical disc 100 in FIG. 1 .

[0084] As shown in Figure 2, the volume space is composed of volume and file structure area, DVD video area and other areas. UDF stradd...

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Abstract

The present invention provides a secondary image regeneration device and a method thereof which can obtain a primary image and the secondary image stably when a special regeneration is switched to a general regeneration. A primary timer shows the whole reference time of the device by counting value. A control part contrasts the reference time with a system clock reference of a data packet head and then takes regulated relation grouping into a memorizer to generate a data unit. When the counting value is larger than a displayed time mark of the data unit, the data unit is decoded. When the special regeneration is switched to the general regeneration according to the control of the control part, the primary timer is set again according to the system clock reference of a latest taken-in data packet.

Description

technical field [0001] The present invention relates to a method and device for reproducing a recording medium on which compressed main image data of moving images, subpicture data such as subtitles, sound data, etc. are recorded, and particularly relates to subpicture reproduction control Methods and devices. Background technique [0002] In existing video tape recorders and LD (laser disk) reproducing devices, subtitles may also be reproduced when reproducing images. However, the subtitles displayed on the screen are recorded inseparably from the main image. [0003] In view of this situation, recently, a kind of such system has been developed, that is: moving picture data, sound data, sub-picture data (for example: subtitle data) are compressed, and recorded in a small high-density disk (diameter approx. 12cm), and there are many different languages ​​recorded on the audio and subtitles. When reproducing, the audio and subtitles of the desired language can be arbitrarily...

Claims

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Application Information

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IPC IPC(8): G11B7/00H04N5/84
CPCG11B19/06G11B20/10222G11B2020/00072G11B2220/2537H04N5/85
Inventor 大轮妙
Owner KK TOSHIBA
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