Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1992-09-09
1994-03-08
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Recording apparatus
360 31, 360 75, 360 69, H04N 979
Patent
active
052932460
ABSTRACT:
An apparatus for removing foreign materials from the head of a video cassette recorder or a video camera wherein the foreign materials adhering to the head are repeatedly cleansed away by a head cleaner until the foreign materials are completely removed. A synchronizing signal detecting section 20 detects synchronizing signals from among video signals amplified by a video mechanism 10. The synchronizing signal detecting section 20 then converts the detected signals into a DC voltage. An envelope detecting section 30 detects envelope signals from among the video signals and converts them into a DC voltage. The output of the synchronizing signal detecting section 20 and that of the envelope detection section 30 are compared by a comparing section 40. A microcomputer 60 controls the head cleaner 12 in accordance with the output of the comparing section 40, thereby making it possible to completely clean the head with an apparatus that is convenient and easy to use.
REFERENCES:
patent: 4607297 (1986-08-01), Sonoda et al.
patent: 4827361 (1989-05-01), Yoshioka
patent: 5088082 (1992-02-01), Yamada et al.
patent: 5130866 (1992-07-01), Klaassen et al.
Chevalier Robert
Chin Tommy P.
Samsung Electronics Co,. Ltd.
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