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:
May. 04, 2004
Filed:
Sep. 30, 2002
Raf Lodewijk Jan Roovers, Eindhoven, NL;
Hendrik Van Der Ploeg, Eindhoven, NL;
Gian Hoogzaad, Delft, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A pipeline/subranging architecture is used to provide a circuit for analog to a digital conversion. A course analog to digital converter, a fine analog to digital to converter, combining logic circuitry and a digital to analog converter are used, together with a voltage to current converter and a current to voltage converter. A residual signal is formed as the difference between the input signal and an output signal of the coarse analog to digital conversion, the latter output signal having been converted to analog form by the analog to digital converter. The residual signal is then scaled appropriately and applied to the fine analog to digital converter. A final output signal is based on the output signals of the coarse digital to analog converter and the fine digital to analog converter.