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Combined video (appliance) device for education using captioning

A technology for video equipment and composite video signals, which is applied in the field of combined video equipment, and can solve problems such as inability to display subtitle data separately for composite video signals, slow transmission speed and display speed, and complicated decoding procedures.

Inactive Publication Date: 2004-05-19
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to this customary Hangul closed captioning system, since at least two to three bytes of data are required to represent a Hangul character, its transmission speed and display speed are relatively slow
In addition, since the position of a Hangul character is retrieved through a combination of three to four byte data, its decoding procedure is more complicated
[0006] Furthermore, the conventional captioning system has the disadvantage that if the composite video signal is recorded by a composite video device which records and reproduces the composite video signal transmitted by the closed caption broadcasting system, the caption data cannot be displayed separately from the composite video signal
In addition, the conventional subtitle system cannot control the reproduction speed of the audio signal

Method used

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  • Combined video (appliance) device for education using captioning
  • Combined video (appliance) device for education using captioning
  • Combined video (appliance) device for education using captioning

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Embodiment Construction

[0016] figure 1 The structure of the television broadcasting system of the present invention is shown, which is used for broadcasting subtitles and additional information selected by viewers.

[0017] see figure 1 , the audio signal input through the microphone 10 is mixed and amplified by an audio signal processing section 30 and then supplied to a television (TV) signal modulating section 50 . A video signal input through the video camera 20 is amplified and edited by a video signal processing section 40 and then supplied to a TV signal modulating section 50 . The TV signal modulation part 50 adopts the vestigial sideband modulation method to carry out frequency modulation on the audio signal, carry out amplitude modulation on the video signal, and carry out frequency division multiplexing and frequency transmission on the signal of amplitude modulation (AM) and frequency modulation (FM), This results in a high frequency signal. This high-frequency signal is then amplifie...

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Abstract

A combined video device for education using captioning includes a system controller for controlling the operation of the device according to the data input from a data input part; a tape transport mechanism for recording the combined video signal received by a tuner and processed by a video signal process device in a recording medium and getting the signal from the medium; an audio frequency reproduce speed control part for controlling the reproducing speed for the audio signal gotten by the tape transport mechanism and processed by an audio frequency signal processing part according to the control signal of the system controller; and a caption processing part for getting the caption information included in the gotten combined video signal or in the combined video signal provided by the tuner in order to display the gotten caption information on a display screen.

Description

technical field [0001] The present invention relates to composite video equipment for subtitle teaching, particularly such a composite video equipment for subtitle teaching, from which a composite video signal including subtitles and control codes is received and recorded in a recording medium, in which While the recorded subtitles are displayed, the audio signal is played back repeatedly or at a slow playback speed as desired by the viewer. Background technique [0002] The subtitle broadcasting system in TV broadcasting can be classified into an open subtitle system and a closed subtitle system. The former superimposes subtitle signals within the effective period of the TV signal, and displays important subtitles on the TV screen through the selection of broadcasting stations. News, announcements, etc., and the latter is to encode the subtitle signal during the non-effective period of the TV signal, that is, the vertical blanking period, and display text subtitles on the s...

Claims

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Application Information

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IPC IPC(8): H04N5/278H04N5/445H04N5/91
CPCH04N5/60H04N5/783H04N7/08
Inventor 裵点汉
Owner SAMSUNG ELECTRONICS CO LTD
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