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:
Apr. 12, 2011
Filed:
Aug. 22, 2007
Martijn F. Snoeij, Delft, NL;
Adrianus J. Mierop, Dirksland, NL;
Albert J. P. Theuwissen, Bree, BE;
Johannes H. Huijsing, Midden-Delfland, NL;
Martijn F. Snoeij, Delft, NL;
Adrianus J. Mierop, Dirksland, NL;
Albert J. P. Theuwissen, Bree, BE;
Johannes H. Huijsing, Midden-Delfland, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A single-slope ADC, particularly suitable for use in a massive-parallel ADC architecture in a readout circuit of a CMOS imager. A plurality of ramp signals are generated which define non-overlapping sub-ranges of the full input range. For each ADC channel, the sub-range in which the voltage of the input signal falls is determined, and the corresponding ramp signal is selected for use in the A/D conversion. Thus, the speed of the A/D conversion process can be increased and the power consumption decreased.