The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 1993
Filed:
Apr. 09, 1992
Sony Corporation, Tokyo, JP;
Abstract
Apparatus for adjusting a digital signal which is subjected to analog processing after being reproduced from a record medium. A prerecorded digital test signal is reproduced and written to a field memory which, during a normal playback mode, is used to store the digital video signal that may be reproduced. A loop, which is opened during the normal playback mode, includes DAC and ADC for circulating the digital test signal therethrough a number of times 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.