Apparatus and methods for providing close captioning in a digita

Details Apparatus and methods for providing close captioning in a digita Apparatus and methods for providing close captioning in a digita

1994-07-14

1995-08-01

Kostak, victor R.

Television

Format

Including additional information

348478, H04N 7087

Patent

active

054383706

ABSTRACT:
An apparatus for providing close captioning in a digital program services delivery system comprises: a rate converter circuit for receiving video codes and outputting video data; a video decoder circuit for receiving the video data and outputting digital Y, U, V data; a digital to analog converter/analog encoder circuit for converting the Y, U, V data into an analog video signal in a prescribed format; a line 21 former circuit for receiving close captioning digital data and forming a line 21 analog signal; and a multiplexor for inserting the line 21 analog signal into the analog video signal.

REFERENCES:
patent: 4361848 (1982-11-01), Poignet et al.
patent: 5181113 (1993-01-01), Chang
U.S. Patent Application Ser. No. 968,846, filed Oct. 30, 1992, entitled "System and Method For Transmitting a Plurality of Digital Services."

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