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公开(公告)号：EP1673859B1
公开(公告)日：2011-03-23
申请号：EP04795192.6
申请日：2004-10-14
发明人： BOOR, Steven, E.
CPC分类号： H03F1/305 , H03F3/185 , H03F3/72 , H03F2203/7233 , H03G3/345
摘要： A reset circuit apparatus is used with a buffer amplifier circuit to provide a low impedance shunt for improving the settling characteristics of buffer amplifiers, particularly as used with miniature electret microphones. The reset circuit comprises a detector and is coupled to a switch. The switch is activated when the detector is triggered by predetermined operating conditions. The switch activates a ramp generator for providing a delay signal of a predetermined period to a shunt or reset device coupled to the input of a buffer amplifier. A method for performing the reset function is also discussed and described.
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公开(公告)号：EP1695592A1
公开(公告)日：2006-08-30
申请号：EP03819164.9
申请日：2003-12-16
发明人： BOOR, Steven, E. , TSANGARIS, Paris
CPC分类号： H04R25/43 , H04R25/554
摘要： A system and method for assisting listening wherein an integrated circuit selects one or more audio sources from among a plurality audio sources to be presented to a signal processing circuit. Selection of the audio source can be automatically executed in response to detection of an external magnetic field, such as from a telephone handset, or manually controlled by a user input.
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3.发明公开
公开(公告)号：EP1623601A1
公开(公告)日：2006-02-08
申请号：EP04750766.0
申请日：2004-04-28
IPC分类号： H04R19/01
CPC分类号： H04R19/016 , H04R3/00 , H04R25/00 , H04R2225/49
摘要： A hybrid circuit (300) for use in a miniature microphone assembly (100) reduces power supply noise on the audio signal input (214) of an impedance buffer amplifier (200) using one or both of shielding conductors (422, 424) to reduce parasitic capacitance between signal (418) and power supply (420) conductors. A ground plane (424), an interposing conductor (422) and combinations thereof are selectively placed and coupled to either ground (232) or a low impedance signal node (216) to reduce or eliminate the undesirable parasitic capacitance.
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公开(公告)号：EP0760179B1
公开(公告)日：2004-04-14
申请号：EP95920472.8
申请日：1995-05-19
CPC分类号： H03F3/183 , H03F3/505 , H03F2200/03 , H03F2200/222 , H03H11/28 , H03H11/30 , H04R25/502
摘要： An impedance matching, reducing, or buffering circuit for permitting smooth signal flow from a first transmission medium to a second transmission medium. The circuit provides a first node adapted for coupling to the first transmission medium and for receiving a signal from the first transmission medium. The circuit further provides a buried channel transistor, that is coupled to the first node and that is biased by additional circuit devices, for transforming the impedance imposed on the signal. The use of the buried mode transistor reduces noise on the surface of the transistor while at the same time keeps other performance standards high. The circuit additionally provides a second node that is coupled to the buried channel transistor and that is adapted for coupling to the second transmission medium for conveying the signal to the second transmission medium.
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公开(公告)号：EP1620742A2
公开(公告)日：2006-02-01
申请号：EP04760440.0
申请日：2004-04-28
发明人： BOOR, Steven, E.
IPC分类号： G01R33/06
CPC分类号： G01R33/06
摘要： A magnetic field sensor includes a transistor device having a base region, an emitter region, and a collector region. A barrier region disposed between the emitter region and the collector region to hamper charge carriers injected into the base region from the emitter region from reaching at least a portion of the collector region. The magnetic field sensor further includes a first voltage source to bias the collector region with respect to the base region to form a space-charge layer associated with the collector region.
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公开(公告)号：EP1695592B1
公开(公告)日：2011-04-13
申请号：EP03819164.9
申请日：2003-12-16
发明人： BOOR, Steven, E. , TSANGARIS, Paris
CPC分类号： H04R25/43 , H04R25/554
摘要： A system and method for assisting listening wherein an integrated circuit selects one or more audio sources from among a plurality audio sources to be presented to a signal processing circuit. Selection of the audio source can be automatically executed in response to detection of an external magnetic field, such as from a telephone handset, or manually controlled by a user input.
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公开(公告)号：EP1673859A1
公开(公告)日：2006-06-28
申请号：EP04795192.6
申请日：2004-10-14
发明人： BOOR, Steven, E.
CPC分类号： H03F1/305 , H03F3/185 , H03F3/72 , H03F2203/7233 , H03G3/345
摘要： A reset circuit apparatus is used with a buffer amplifier circuit to provide a low impedance shunt for improving the settling characteristics of buffer amplifiers, particularly as used with miniature electret microphones. The reset circuit comprises a detector and is coupled to a switch. The switch is activated when the detector is triggered by predetermined operating conditions. The switch activates a ramp generator for providing a delay signal of a predetermined period to a shunt or reset device coupled to the input of a buffer amplifier. A method for performing the reset function is also discussed and described.
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