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:
Jan. 15, 1980
Filed:
Jul. 18, 1978
Gilbert M Ferrieu, Bievres, FR;
Pierre L Breant, Clamart, FR;
Abstract
This circuit arrangement, which is connected to a delta modulation encoder operating with a sampling rate F and producing a first delta modulation signal, comprises means for producing the two bits b.sub.2n-1, b.sub.2n-2 which in this first signal precede each of the bits b.sub.2n occurring at the instants 2nT and having a rate F/2, a first flip-flop which is controlled at said instants 2nT for maintaining or not maintaining the state thereof, depending on whether the two above-mentioned bits b.sub.2n-1, and b.sub.2n-2 are identical or not, a second flip-flop to which the output signal of the first flip-flop is applied through a logic circuit, and which assumes either the state of the above-mentioned bit b.sub.2n or the state of the bit b.sub.2n-1, depending on whether the first flip-flop is in the one or in the other state. The output of this second flip-flop produces the desired delta modulation signal.