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1. WO2011111125 - SIGNAL PROCESSING DEVICE AND DIGITAL OUTPUT MICROPHONE UNIT

Publication Number WO/2011/111125
Publication Date 15.09.2011
International Application No. PCT/JP2010/004936
International Filing Date 05.08.2010
IPC
H04R 3/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
H03M 1/06 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
1Analogue/digital conversion; Digital/analogue conversion
06Continuously compensating for, or preventing, undesired influence of physical parameters
H03M 1/10 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
1Analogue/digital conversion; Digital/analogue conversion
10Calibration or testing
CPC
H03M 3/324
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
3Conversion of analogue values to or from differential modulation
30Delta-sigma modulation
322Continuously compensating for, or preventing, undesired influence of physical parameters
324characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
H03M 3/43
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
3Conversion of analogue values to or from differential modulation
30Delta-sigma modulation
39Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
412characterised by the number of quantisers and their type and resolution
422having one quantiser only
43the quantiser being a single bit one
H03M 3/456
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
3Conversion of analogue values to or from differential modulation
30Delta-sigma modulation
39Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
436characterised by the order of the loop filter, e.g. error feedback type
456the modulator having a first order loop filter in the feedforward path
H04R 19/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
19Electrostatic transducers
04Microphones
H04R 2201/003
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
2201Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
003Mems transducers or their use
H04R 3/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers ; , loudspeakers or microphones
04for correcting frequency response
06of electrostatic transducers
Applicants
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 政井 茂雄 MASAI, Shigeo (UsOnly)
Inventors
  • 政井 茂雄 MASAI, Shigeo
Agents
  • 特許業務法人 有古特許事務所 PATENT CORPORATE BODY ARCO PATENT OFFICE
Priority Data
2010-05647012.03.2010JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) SIGNAL PROCESSING DEVICE AND DIGITAL OUTPUT MICROPHONE UNIT
(FR) DISPOSITIF DE TRAITEMENT DE SIGNAL ET UNITÉ DE MICROPHONE À SORTIE NUMÉRIQUE
(JA) 信号処理装置、デジタル出力マイクロホンユニット
Abstract
(EN) Disclosed is a signal processing device (13) which performs analog-digital conversion of analog electric signals converted from sound by a microphone (1) and outputs digital electric signals, wherein the device is provided with a preamplifier (15) for amplifying the analog electric signals output from the microphone (1), an analog-digital convertor (12) for comparing the analog electric signals output from the preamplifier (15) with a reference voltage (Vref) and performing analog-digital conversion, and a reference voltage generation circuit (14) for generating the reference voltage (Vref) and supplying the voltage to the analog-digital convertor (12), and wherein the reference voltage generation circuit (14) is provided with an element having a higher temperature dependency in terms of an electric property, compared to other electric circuit elements among electric circuit elements constituting the signal processing device (13), and generates a reference voltage (Vref) corresponding to the voltage between the terminals of the element.
(FR) L'invention porte sur un dispositif de traitement de signal (13) qui effectue une conversion analogique-numérique de signaux électriques analogiques obtenus par conversion du son par un microphone (1) et qui émet des signaux électriques numériques, le dispositif étant pourvu d'un préamplificateur (15) pour amplifier les signaux électriques analogiques émis par le microphone (1), d'un convertisseur analogique-numérique (12) pour comparer les signaux électriques analogiques émis par le préamplificateur (15) à une tension de référence (Vref) et pour effectuer une conversion analogique-numérique, et d'un circuit de génération de tension de référence (14) pour générer la tension de référence (Vref) et pour fournir la tension au convertisseur analogique-numérique (12), le circuit de génération de tension de référence (14) étant pourvu d'un élément qui est davantage dépendant de la température en termes de propriété électrique, par comparaison à d'autres éléments de circuit électrique parmi les éléments de circuit électrique constituant le dispositif de traitement de signal (13), et générant une tension de référence (Vref) qui correspond à la tension entre les bornes de l'élément.
(JA)  マイクロホン(1)によって音から変換されたアナログ電気信号をデジタル電気信号にアナログ-デジタル変換して出力する信号処理装置(13)において、マイクロホン(1)から出力されたアナログ電気信号を増幅するプリアンプ(15)と、プリアンプ(15)から出力されたアナログ電気信号を基準電圧Vrefと比較してアナログ-デジタル変換するアナログ-デジタル変換器(12)と、基準電圧Vrefを生成してアナログ-デジタル変換器(12)に供給する基準電圧生成回路(14)と、を備え、基準電圧生成回路(14)は、信号処理装置(13)を構成する電気回路素子の中でその他の電気回路素子と比べてその電気的性質の温度依存性が高い素子を備え、この素子の両端子間電圧に応じた基準電圧Vrefを生成する。
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