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. 05, 1984
Filed:
Dec. 31, 1981
Dominic J Di Gianfilippo, Mount Prospect, IL (US);
Robert R Parker, Wheeling, IL (US);
Bell & Howell Company, Chicago, IL (US);
Abstract
Control apparatus including a keyboard is provided for a slide projector to control operation of the slide projector in various predetermined modes to perform predetermined functions. Various functions are executed by the slide projector in response to the keyboard inputs. The keyboard includes an array of digit keys for the numerals 0 through 9 and various other function keys. Actuation of each of the function keys directly corresponds to either a function to be accomplished by the control apparatus or to a command mode input. Actuation of the digit keys provides designation of particular slide address numbers and also provides predetermined mode command inputs. The slide projector and control apparatus include an associated cassette tape recorder/player. A prerecorded program tape includes encoded slide address signals and encoded mode command signals which are decoded to control the slide projector to project the slides represented by the encoded slide address signals in a random access program in accordance with the associated decoded mode command signals. A remote control unit is also provided that includes a keyboard. In specific embodiments the control apparatus provides for the manual, local, or remote control of functions and features for slide programs including random access slide selection, selective pause times, indefinite pauses with restart control, remote control enable and disable, display blanking and unblanking control, selective slide presentation advance times, record enable, and integrated control of the local and remote keyboard.