dc.creator | Fernández Berni, Jorge | es |
dc.creator | Carmona Galán, Ricardo | es |
dc.date.accessioned | 2018-03-05T15:39:47Z | |
dc.date.available | 2018-03-05T15:39:47Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Fernández Berni, J. y Carmona Galán, R. (2012). All-MOS implementation of RC networks for time-controlled Gaussian spatial filtering. International Journal of Circuit Theory and Applications, 40 (8), 859-876. | |
dc.identifier.issn | 0098-9886 (impreso) | es |
dc.identifier.issn | 1097-007X (electrónico) | es |
dc.identifier.uri | https://hdl.handle.net/11441/70787 | |
dc.description.abstract | This paper addresses the design and VLSI implementation of MOS-based RC networks capable of performing time-controlled Gaussian filtering. In these networks, all the resistors are substituted one by one by a single MOS transistor biased in the ohmic region. The design of this elementary transistor is carefully realized according to the value of the ideal resistor to be emulated. For a prescribed signal range, the MOSFET in triode region delivers an interval of instantaneous resistance values. We demonstrate that, for the elementary 2-node network, establishing the design equation at a particular point within this interval guarantees minimum error. This equation is then corroborated for networks of arbitrary size by analyzing them from a stochastic point of view. Following the design methodology proposed, the error committed by an MOS-based grid when compared with its equivalent ideal RC network is, despite the intrinsic nonlinearities of the transistors, below 1% even under mismatch conditions of 10%. In terms of image processing, this error hardly affects the outcome, which is perceptually equivalent to that of the ideal network. These results, extracted from simulation, are verified in a prototype vision chip with QCIF resolution manufactured in the AMS 0.35µm CMOS-OPTO process. This prototype incorporates a focal-plane MOS-based RC network that performs fully programmable Gaussian filtering. | es |
dc.description.sponsorship | Junta de Andalucía 2006-TIC-2352 | es |
dc.description.sponsorship | Ministerio de Ciencia e Innovación TEC 2009-11812 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Wiley-Blackwell | es |
dc.relation.ispartof | International Journal of Circuit Theory and Applications, 40 (8), 859-876. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Gaussian filtering | es |
dc.subject | Focal-plane processing | es |
dc.subject | RC networks | es |
dc.subject | VLSI implementation | es |
dc.title | All-MOS implementation of RC networks for time-controlled Gaussian spatial filtering | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/submittedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo | es |
dc.relation.projectID | 2006-TIC-2352 | es |
dc.relation.projectID | TEC 2009-11812 | es |
dc.relation.publisherversion | http://dx.doi.org/10.1002/cta.759 | es |
dc.identifier.doi | 10.1002/cta.759 | es |
idus.format.extent | 22 p. | es |
dc.journaltitle | International Journal of Circuit Theory and Applications | es |
dc.publication.volumen | 40 | es |
dc.publication.issue | 8 | es |
dc.publication.initialPage | 859 | es |
dc.publication.endPage | 876 | es |
dc.contributor.funder | Junta de Andalucía | |
dc.contributor.funder | Ministerio de Ciencia e Innovación (MICIN). España | |