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:
Jun. 11, 1991
Filed:
Oct. 28, 1988
Applicant:
Inventors:
Albert B Conti, Stoneham, MA (US);
Richard G Egan, Dover, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360132 ; 360 66 ;
Abstract
A programmable limited play video tape cassette includes a microcircuit that is programmed to provide a play limit signal at the termination of a selected play period based on time, a calendar period or play count. The cassette also includes selected peripheral devices which render prerecorded picture information on the video tape non-viewable in response to the play limit signal from the programmable microcircuit. In addition to the programmable microcircuit and peripheral devices, the cassette includes a battery, an LCD panel, and one or more sensors.