Closed-caption scrolling method and apparatus suitable for sylla

Details Closed-caption scrolling method and apparatus suitable for sylla Closed-caption scrolling method and apparatus suitable for sylla

1997-05-05

1999-11-30

Peng, John K.

Television

Basic receiver with additional function

For display of additional information

348569, 348589, 348600, H04N 5440, H04N 5445, H04N 5444, H04N 5468

Patent

active

059951591

ABSTRACT:
A closed-caption scrolling method and apparatus suitable for displaying a closed caption including syllable characters and capable of reducing the memory capacity. According to the method, the caption signal is encoded in a line of each field of a broadcasting television signal which does not affect the broadcasting signal, and then transmitted to be displayed on a screen of a receiver. A control code for controlling the size of a scroll region and the scrolling direction is produced, so that character information following the control code is displayed on the predetermined scroll region, being scrolled in a predetermined direction, by the control code.

REFERENCES:
patent: 5287181 (1994-02-01), Holman
patent: 5500680 (1996-03-01), Lee
patent: 5541662 (1996-07-01), Adams
patent: 5541663 (1996-07-01), Ohno
patent: 5543851 (1996-08-01), Chang
patent: 5646796 (1997-07-01), Kimura

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