Video subtitle processing system

Details Video subtitle processing system Video subtitle processing system

1994-12-20

1997-11-04

Lee, Michael H.

Television

Nonpictorial data packet in television format

Including teletext decoder or display

348462, 348465, 348467, 348564, H04N 708, H04N 700

Patent

active

056845421

ABSTRACT:
A video subtitle processing system encoding unit which allows display of high quality subtitle in accordance to a preference of an user, to switch the display of the subtitle quickly without degrading the background video image and to transmit and display the colored subtitle with less data amount are provided. The subtitle data encoding unit comprises a color lookup table as memory means for storing color data and a color quantization circuit as detecting means for detecting an address in memory for storing the color data which corresponds to a color of the subtitle, and is characterized in that the address in the memory means detected by the color quantization circuit is coded and transmitted as color information concerning on the color of the subtitle.

REFERENCES:
patent: 4471377 (1984-09-01), Mogi et al.
patent: 4712099 (1987-12-01), Maeda
patent: 4845662 (1989-07-01), Tokumitsu
patent: 4853681 (1989-08-01), Takashima
patent: 5134484 (1992-07-01), Wilson

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