Apparatus for adjusting a reproduced signal.

摘要

Apparatus for adjusting a digital signal which is subjected to analog processing after being reproduced from a record medium (17). A prerecorded digital test signal is reproduced and written to a field memory (20) which, during a normal playback mode, is used to store the digital video signal that may be reproduced. A loop, which is open during the normal playback mode, includes a digital to analog converter (24) and an analog to digital converter (12) for circulating the digital test signal therethrough a number of times (n) and is coupled to the field memory to receive the stored test signal. A detector detects changes in the test signal after having been circulated through the loop, and these changes are used to establish adjustment settings for adjusting the digital video signal during a playback mode. <IMAGE>