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1. (WO2018104717) METHODS AND APPARATUSES FOR DRIVING AUDIO AND ULTRASONIC SIGNALS FROM THE SAME TRANSDUCER
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Pub. No.: WO/2018/104717 International Application No.: PCT/GB2017/053654
Publication Date: 14.06.2018 International Filing Date: 04.12.2017
IPC:
H04R 3/04 (2006.01) ,G01S 15/02 (2006.01) ,H03G 3/20 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3
Circuits for transducers
04
for correcting frequency response
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
02
using reflection of acoustic waves
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
3
Gain control in amplifiers or frequency changers
20
Automatic control
Applicants:
CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LIMITED [GB/GB]; 7B Nightingale Way Quartermile Edinburgh EH3 9EG, GB
Inventors:
LESSO, John Paul; GB
ANDRIEU, Cedric; GB
CUTHILL, Calum; GB
Agent:
O'CONNELL, David; GB
Priority Data:
1704979.228.03.2017GB
62/430,60506.12.2016US
62/577,87927.10.2017US
Title (EN) METHODS AND APPARATUSES FOR DRIVING AUDIO AND ULTRASONIC SIGNALS FROM THE SAME TRANSDUCER
(FR) PROCÉDÉS ET APPAREILS PERMETTANT DE PILOTER DES SIGNAUX AUDIO ET ULTRASONORES À PARTIR DU MÊME TRANSDUCTEUR
Abstract:
(EN) Driver circuitry is disclosed for driving an electroacoustic transducer to provide an output comprising both ultrasonic and audio signal components. The driver circuitry comprises an adjustment module configured to reduce the level of said ultrasonic component signal in response to an increase in an operational variable indicative of a level of said audio signal component, while also increasing the pulse duration, duty cycle, repetition frequency or frequency span or bandwidth of the ultrasonic component.
(FR) La présente invention concerne des circuits de pilotage permettant de piloter un transducteur électroacoustique afin de fournir une sortie comprenant à la fois des composantes de signal ultrasonore et audio. Les circuits de pilotage comprennent un module de réglage configuré pour réduire le niveau dudit signal de composante ultrasonore en réponse à une augmentation d'une variable opérationnelle qui indique un niveau de ladite composante de signal audio tout en augmentant également la durée d'impulsion, le cycle opératoire, la fréquence de répétition, l'étalement de fréquence ou la largeur de bande de la composante ultrasonore.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)