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:
Aug. 03, 2004
Filed:
Apr. 29, 2003
David Graham Nairn, Greensboro, NC (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Parallel analog-to-digital converter systems are provided in which converters are temporally interleaved. In particular, converters are partitioned into at least two converter groups which are assigned different respective group converter periods that are multiples of the system periods. With converters in each of the converter groups, respective samples are processed over that group's respective group converter period and the group converter periods of all converters are temporally shifted to process each of the samples with at least one of the converters. System spurious signals are thus reduced and, in another system embodiment, the reduced spurious lines are converted into the system's noise level by detecting instances when available converters that belong to different converter groups are available to process an upcoming one of the samples and, in at least a chosen one of the instances, exchanging the available converters between their different converter groups to thereby alter which processes the upcoming sample and which processes a subsequent sample. All converters continue to process respective samples.