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. 28, 1977
Filed:
Nov. 18, 1975
Charles K Pooley, Van Nuys, CA (US);
National Board of Medical Examiners, Philadelphia, PA (US);
Abstract
In a fully flexible interactive program, options are presented to the user by means of a projected slide. When one option is selected, and is entered into the machine, a preconditioned memory energizes a servomechanism to advance a select one of plural videotape recorders to a particular segment. The servo controls the tape advance by comparing distance to go with a signal proportional to the square of the tape velocity. When the segment is reached, the videotape presents an audiovisual segment to the user, during which time information for subsequent options to be presented is coupled into the system, including identification of the next option slide to be presented and video segment identification corresponding to those options for preconditioning the memory.