BASE BAND SIGNAL DECODING CIRCUIT, DECODING METHOD, AND POWER SUPPLY DEVICE USING THEM

PROBLEM TO BE SOLVED: To reduce bit errors.SOLUTION: A base band signal Smaintains a level within a bit period Tp when a bit is a first value, and is encoded so as to perform level transition within the bit period Tp when the bit is a second value. An oversampling circuit 10 samples the base band si...

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Bibliographic Details
Main Author MIYATA MANABU
Format Patent
LanguageEnglish
Published 25.08.2014
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:PROBLEM TO BE SOLVED: To reduce bit errors.SOLUTION: A base band signal Smaintains a level within a bit period Tp when a bit is a first value, and is encoded so as to perform level transition within the bit period Tp when the bit is a second value. An oversampling circuit 10 samples the base band signal Sby a clock signal CK having a clock cycle Tck=Tp/M and generates a first data sequence S1. A change point detection circuit 20 asserts a second data sequence S2 for one clock period Tck when a bit change occurs to the oversampled first data sequence S1. A stretch circuit 30 expands a period in which the second data sequence S2 is asserted by N multiple and generates a third data sequence S3. The sampling circuit 40 generates demodulation data Sshowing a value displayed by respective bits included in the base band signal Son the basis of the third data sequence S3.
Bibliography:Application Number: JP20130020371