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:
Mar. 29, 1983
Filed:
Oct. 24, 1979
Vincent P Jalbert, Middlebury, CT (US);
SCM Corporation, New York, NY (US);
Abstract
Encoding apparatus for a business machine includes a resilient striker for inducing diverging sound waves within a rod by impact with it at a given location. Transducers positioned along the rod on each side of the striker and at unequal distances from it, convert the sound wave fronts into a first and a second output signal having a predetermined time interval between them which is dependent upon the location of impact with the rod. The transducers are connected to a logic unit which includes an oscillator-driven binary counter. The first output signal starts the counter and subsequent arrival of the second output signal determines the elapsed time, the counter output at that instant being a binary code value usable for any desired purpose: control, display, etc. The encoding apparatus may be incorporated in a keyboard having a number of keys and a corresponding number of strikers differentially positioned along the rod such that each key produces output signals with a predetermined time interval between them and accordingly a unique binary code may be obtained upon actuation of each key.