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:
Oct. 03, 1978
Filed:
Apr. 25, 1977
Richard Slaughter Swain, Des Plaines, IL (US);
Norlin Music, Inc., Lincolnwood, IL (US);
Abstract
An encoder providing on a single terminal of a circuit package a composite serial data stream containing both stored data bits of a multistage binary memory and a clock signal needed for decoding the data. A parallel to serial converter serially shifts the stored binary data bits to an output thereof in response to clock pulses of an internal clock, and a logic circuit responsive to both the internal clock and the serial binary data from the converter generates first, second and third signals of amplitudes discernibly different from one another respectively in response to 1-state data bits, 0-state data bits and the termination of clock pulses. Two fixed inputs to the converter respectively provide a 1-state start bit at the beginning of the set of data bits and a 0-state stop bit at the end of the set of data bits for purposes of decoding. An amplitude discriminating decoder uses the periodic third signals and the start and stop bits to decode the serial data.