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. 21, 1977
Filed:
Apr. 26, 1976
Applicant:
Inventor:
Mark Layne Shaw, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
328 70 ; 3072 / ; 307350 ; 328103 ; 328152 ;
Abstract
A zener diode and resistor network is coupled to a single conductor by a switching device which, in combination with the network, produces a voltage on the conductor representative of one of four commands selected by the switching device. Another zener diode and resistor network is coupled to the receiving end of the transmission conductor and operates to generate two ternary signals which, in combination, are representative of the selected command. A plurality of dual-threshold CMOS logic gates generates four binary output signals responsive to the two ternary signals.