Apparatus for adjusting a reproduced signal

Apparatus for adjusting a digital signal which is subjected to analog processing after being reproduced from a record medium (36) comprises a digital test signal source (32;11;35), a loop including a digital to analog convertor (21) and an analog to digital convertor (20) for circulating the digital...

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Bibliographic Details
Main Author ISHII, MIKIO
Format Patent
LanguageEnglish
French
German
Published 17.06.1998
Edition6
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:Apparatus for adjusting a digital signal which is subjected to analog processing after being reproduced from a record medium (36) comprises a digital test signal source (32;11;35), a loop including a digital to analog convertor (21) and an analog to digital convertor (20) for circulating the digital test signal therethrough a predetermined number of times (M), a detector (43) for detecting changes in the test signal after having been circulated through the loop, and adjustment means (44,42) having adjustment values set in response to the detected changes so as to adjust predetermined characteristics of a digital video signal that subsequently may be reproduced from the record medium, thereby reducing changes and degradations in the reproduced digital video signal that otherwise would be caused by the analog processing.
Bibliography:Application Number: EP19920303149