(英国电讯公司2007年下半年专利清单)Recent BT patents

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PATENTS

BT Technol J Vol 16 No 2 April 1998197Recent BT patents

The following tables list recent BT patents, published or granted, under three headings — published International (PCT)patent applications by BT, US patents granted to BT, and European patents granted to BT. These listings will be updated eachquarter.The following International (PCT) patent applications by BT were published between 1 October 1997 and 31 December 1997

Published NumberSubjectInventors

02 Oct 1997WO97/36425Continuous presence — CIF from QCIFs (array method)G D Burgess

02 Oct 1997WO97/36453Services over ATMT G HodgkinsonA W O’Neill

02 Oct 1997WO97/36414Call queuingD R Donnelly

02 Oct 1997WO97/36442Connection of mobile via fixed networkI Goetz

02 Oct 1997WO97/36288Mouth image synthesis for synthetic speechA P BreenE J Bowers

02 Oct 1997WO97/36198Photonic bandgap material micrograting for WDMM G BurtR S Grant

02 Oct 1997WO97/36432IN destination identityM C MorleyI C C SturgessD S Garover

02 Oct 1997WO97/36204High modulation depth low-capacitance electro-absorption modulatorD G MoodieM J Harlow

09 Oct 1997WO97/37294Navigation in a virtual worldK J FisherD J Linton

09 Oct 1997WO97/37345Voicing featureK J PowerS P A Ringland

09 Oct 1997WO97/37498Custom dialogue extensionM D Cookson

09 Oct 1997WO97/37499Customer profile with AI-based routeingR J AkesterP McDonald

09 Oct 1997WO97/37506Home location register number translatorW A DouseD G Sanders

09 Oct 1997WO97/37502Short code subscription checkingC J FentonA J Clapton

09 Oct 1997WO97/37304Visualisation of interactions in distributed object systemsC Smith

09 Oct 1997WO97/37500Multimedia information interchangeC S WinterR J Titmuss

09 Oct 1997WO97/37346Cepstral time matrix — frame energyB P Milner

09 Oct 1997WO97/37475Virtual computerW Johnston

09 Oct 1997WO97/37503Predictive pricing for mobile customersP P SmythP F McKeeK E Doyle

09 Oct 1997WO97/37486Fraud alarm pattern correlationN M Busuioc

09 Oct 1997WO97/37487Fraud detection rule adjustmentN M Busuioc

09 Oct 1997WO97/37462Allocating charges without access controlN J Lynch-Aird

09 Oct 1997WO97/37497Video hypertextP AstizF Feit

09 Oct 1997WO97/37446Dispersion compensated WDM drop and insertA D Ellis

contd.PATENTS

BT Technol J Vol 16 No 2 April 1998198contd.09 Oct 1997WO97/37453VC12 tributary monitoringP C Hershey

09 Oct 1997WO97/37501Two-tier regional pricing (MII)C S WinterR J Titmuss

16 Oct 1997WO97/38552Echo canceller for audio conferencingA V LewisA Ensor

16 Oct 1997WO97/38375Internet information serverS J AntcliffJ C RegnaultL D Bradley

23 Oct 1997WO97/39561Multimedia callcentreA Catchpole

23 Oct 1997WO97/39601IN distributed mirror process architectureJ W Shepherd

06 Nov 1997WO97/41668Link length weightingD Johnson

13 Nov 1997WO97/42626Speech recogniser with cross-word context-dependent phoneme modelsS A Hovell

13 Nov 1997WO97/42543All-optical programmable clock dividerR J ManningA J PoustieJ K Lucek27 Nov 1997WO97/44929Optical switch synchronisationD M Patrick

27 Nov 1997WO97/44936Polarisation-independent quantum cryptographyP D Townsend

27 Nov 1997WO97/44747CASPER: look ahead cacheingR WeeksL M StephensN J DaviesM C RevettP G Flavin

11 Dec 1997WO97/46978Hand held IRIS recognition unitC H SealM M GiffordD J McCartney

11 Dec 1997WO97/46979Alignment aid for IRIS recognitionC H SealM M GiffordD J McCartney

11 Dec 1997WO97/46980Hot mirror in IRIS recognitionC H SealM M GiffordD J McCartney

24 Dec 1997WO97/49044Teletext Internet accessN H EdwardsM RussP Garner

31 Dec 1997WO97/50204Twin core optical bus topologyJ K Lucek

31 Dec 1997WO97/50247Digital transmission over analogueA P Heron

31 Dec 1997WO97/50276ATM partial cut-throughT G HodgkinsonA W O’Neill

The following US patents were granted to BT between 1 October 1997 and 31 December 1997

GrantedNumberSubjectInventors

07 Oct 19975675648Public/quantum channel cryptography systemP D Townsend

14 Oct 19975678185Handover determinationS T S Chia

21 Oct 19975680389Data transmission, ESP TV, with buffers for securityD DouglasG T HathawayS Searby

28 Oct 19975682256Radio optical fibre interface and RF distribution systemA G ChadneyA J Motley

04 Nov 19975684615Suppression of soliton interactionsK J BlowK Smith

23 Dec 1997699974Fibre loading in traysP D JenkinsPATENTS

BT Technol J Vol 16 No 2 April 1998199The following European patents were granted to BT from 1 April 1997 to 30 June 1997

GrantedNumberSubjectInventors

02 Apr 1997676110Public/quantum channel cryptography systemP D Townsend

09 Apr 1997528946Alumina/germania/silica/erbium fibreB J AinslieS P Craig-Ryan

23 Apr 1997552218Self-aligned V-grooves and waveguidesA D Welbourn

23 Apr 1997708997Chromium doped blocking layersI F LealmanM J RobertsonM J HarlowP L SpurdensW J Duncan