Systems and methods for decoding teletext messages

Details Systems and methods for decoding teletext messages Systems and methods for decoding teletext messages

2006-09-05

2006-09-05

Hsia, Sherrie (Department: 2622)

Television

Nonpictorial data packet in television format

Data separation or detection

C348S468000

Reexamination Certificate

active

07102689

ABSTRACT:
A system and method for efficiently detecting and decoding valid teletext message sequences is provided. A system is provided that includes a correlator, a sine wave generator, two time window generators, a phase detector, a framing code search engine, and a match filter. The method includes determining the phase of the run-in burst of a teletext message sequence, identifying the framing code location, deciding whether the teletext sequence is valid, and decoding the teletext data for display.

REFERENCES:
patent: 4712131 (1987-12-01), Tanabe
patent: 5519443 (1996-05-01), Salomon et al.

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