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:
Dec. 30, 2014
Filed:
Jun. 05, 2011
Dariusz Koscielnik, Cracow, PL;
Marek Miskowicz, Cracow, PL;
Dariusz Koscielnik, Cracow, PL;
Marek Miskowicz, Cracow, PL;
Abstract
The solution according to the invention consisting in conversion of a portion of electric charge to a digital word of a number of bits equal to n by the use of successive redistribution of charge in the array (A) of binary-scaled capacitors (C, . . . , C) is characterized in that charge is first accumulated during the active state of the external gate signal on the gate signal input (InG) in the capacitors (C, . . . , C) in the order of decreasing capacitances starting from the capacitor (C) having the highest capacitance value in the array, and when the active state of the gate signal is terminated, the charge accumulated in the capacitor (C) charged recently is successively transferred by the use of the current source (I) to the capacitors of lower capacitance values. The process of charge transfer is controlled by the control module (CM) on the basis of the output signals of the comparators (K) and (K) without the use of a clock while the value one is assigned to these bits (b, . . . , b) in the digital output word that correspond to the capacitors (C, . . . , C) on which the reference voltage (U) of a desired value has been obtained, and the value zero is assigned to the other bits.