Television – Basic receiver with additional function – For display of additional information
Patent
1997-07-11
1999-10-12
Kostak, Victor R.
Television
Basic receiver with additional function
For display of additional information
348193, 348569, 455 671, H04N 550
Patent
active
059661860
ABSTRACT:
An error detecting/correcting circuit 9 in a digital broadcast receiving device calculates a error rate from the error amount for the amount of input information. A controlling part 15 converts the error rate into the C/N ratio as a receiving signal quality and indicates it on a screen of a TV receiver 5 or other indicator 18. In this method, after digitally demodulating the received digital broadcasting signal, the error rate is obtained by an error detecting part 9 and the error rate is converted into the receiving signal quality for indication. Therefore, compared with the reception performance indication based on the input level such as the AGC voltage, the method is high both in precision and in stability. The receiving signal quality can be detected only while receiving a digital broadcasting signal, so with reference to the converted receiving signal quality in antenna bearing adjustment, a digital broadcasting signal can be surely received without confusing it with an analog broadcasting signal.
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Nonaka Yasuyuki
Shigihara Hideo
Kabushiki Kaisha Toshiba
Kostak Victor R.
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