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:
Feb. 27, 1979
Filed:
Feb. 16, 1977
Allan R Kmetz, Nussbaumen, CH;
BBC Brown, Boveri & Company, Limited, Baden, CH;
Abstract
A procedure for the addressing of visual display devices comprising stylized alphanumeric characters which consist of similarly shaped front and rear display elements, whereby in the case of simultaneous selection of a front and the corresponding rear display elements, an optical activation of these elements results such that by coincident selection of the front and rear display elements of several pairs of elements having a specific geometrical configuration a corresponding alphanumeric character becomes visible, whereby further the number of address leads and drivers is reduced by interconnecting the display elements as a matrix and by time-sharing the address leads through multiplexed operation in such a way that the address leads in one matrix dimension are used to select the front elements of the display and the address lines in the second matrix dimension are used to select the rear elements of the display and the address leads in one of these matrix dimensions extend over more than one character.