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1. 发明公开

EP1481391A1 METHODS AND SYSTEMS FOR GENERATING PHASE-DERIVATIVE SOUND 有权
标题翻译：用于产生声音的方法和系统衍生自PHASE
公开(公告)号：EP1481391A1
公开(公告)日：2004-12-01
申请号：EP03739578.7
申请日：2003-02-14
申请人： Radiodetection Limited
发明人： Royle, John Mark , PEARSON, Richard, David , KING, James Ian
IPC分类号： G10L21/02
CPC分类号： H04R5/04 , G10K15/02
摘要： Methods and systems for digitally generating sound from phase and amplitude information of a narrow bandwidth signal, such as a narrow bandwidth locator signal. Phase-derivative information is determined from the phase information. The bandwidth of the phase-derivative information is spread out, or stretched, over a wider bandwidth, so that the frequency variations will be more perceptible to users. The result is combined with an audio band carrier frequency, the result of which controls an oscillator. The oscillator output is combined with the amplitude information to generate an analog audio signal that is modulated with the amplitude information and the phase-derivative information. The amplitude information wider bandwidth phase-derivative information are used to modulate an audio carrier in both frequency and amplitude. The overall process can be thought of as a translation of the frequency and amplitude information from the narrow bandwidth around the locate frequency to a wider bandwidth on a chosen carrier frequency in the audio band. The received amplitude and phase information is received at an input sample rate. Where the input sample rate is relatively low, the amplitude and phase information are up-sampled to an output sample rate that is higher than a desired audio frequency. The higher output sample rate insures that there are sufficient samples of the signal during each cycle or period of the audio frequency. The higher sample rate is typically also the sample rate of a digital to analog converter that outputs an analog signal to a speaker. The amplitude information and/or phase derivative information are optionally scaled to system gain. The sound heard by the operator can optionally be adjusted with an optional selectivity filter.

2. 发明授权

EP1481391B1 METHODS AND SYSTEMS FOR GENERATING PHASE-DERIVATIVE SOUND 有权
标题翻译：用于产生声音的方法和系统衍生自PHASE
公开(公告)号：EP1481391B1
公开(公告)日：2010-04-07
申请号：EP03739578.7
申请日：2003-02-14
申请人： RADIODETECTION LIMITED
发明人： Royle, John Mark , PEARSON, Richard, David , KING, James Ian
IPC分类号： G01D7/12 , G01V3/38
CPC分类号： H04R5/04 , G10K15/02

3. 发明公开

EP1474709A1 ELECTRONIC MARKER LOCATOR SYSTEM AND METHOD 有权
标题翻译：系统和方法的电子标记在确定位置
公开(公告)号：EP1474709A1
公开(公告)日：2004-11-10
申请号：EP03739582.9
申请日：2003-02-14
申请人： RADIODETECTION LIMITED
发明人： ROYLE, John, Mark , PEARSON, Richard, David
IPC分类号： G01V15/00
CPC分类号： G01V3/081
摘要： A system and method to locate electronic marker balls includes receiving a signal representative of a detected marker ball. The signal includes the resolved in-phase and quadrature-phase (I and Q) components, each centered about a first frequency. The I and Q components are filtered in order to shift the first frequency to a second frequency and match the second frequency I and Q components to exponential decay characteristics associated with the marker balls. The second frequency I and Q components phase integrated in order to distinguish the components from noise. The integrating is based upon predetermined gain coefficients and produces integrated I and Q components in accordance with the predetermined gain coefficients. Next, a magnitude of the integrated I and Q components is determined to produce an I and Q magnitude vector and a noise variance associated with the magnitude vector is determined. Finally, the recursive coefficients are adjusted in accordance with the determined noise variance.

4. 发明公开

EP1490712A1 SYSTEM AND METHOD FOR DETECTING A CONCEALED CURRENT CARRYING CONDUCTOR 有权
标题翻译：系统和方法，以允许不暴露电导体找到
公开(公告)号：EP1490712A1
公开(公告)日：2004-12-29
申请号：EP03706707.1
申请日：2003-02-19
申请人： RADIODETECTION LIMITED
发明人： PEARSON, Richard, David
IPC分类号： G01V3/08
CPC分类号： G01V3/081
摘要： A system and method for detecting a concealed current carrying conductor is presented. A first and a second field strength signal proportional to an electromagnetic field is generated. A value is determfined for the first field strength signal. This value is used to divide the second field strength signal and form an indicator signal. A value for the indicator signal is determined. If the value of the indicator signal is equal to or greater than a predetermined value (i.e., not less than the predetermined value), a conductor detection signal is generated and used to alert a user to the presence of a concealed current carrying conductor.

5. 发明公开

EP1474895A2 METHOD AND SYSTEM FOR REMOTELY SERVICING A DETECTION DEVICE 审中-公开
标题翻译：方法和系统检测设备的远程控制
公开(公告)号：EP1474895A2
公开(公告)日：2004-11-10
申请号：EP03706701.4
申请日：2003-02-14
申请人： RADIODETECTION LIMITED
发明人： FROST, Nicholas, James , HANLON, Jason, Julian , LEWIS, Andrew, Biggerstaff , RIDLEY, Stephen, E. , MORGAN, Michael, J. , BAKER, Marcus , HISCOX, Gary, P. , PEARSON, Richard, David
IPC分类号： H04L12/24
CPC分类号： H04L41/0806 , H04L41/024 , H04L41/0253 , H04L41/12
摘要： A remotely configurable locator system includes a detection device to locate concealed underground conductors. The detection device is configured to connect to a communications network via a graphical user interface. Also included is a database management tool configured to connect to the communications network and communicate with the detection device via the communications network. A database is included and is adapted to store data related to the detection device wherein the data is configured to be accessed by the database management tool. Finally, the graphical user interface is configured to permit a user to remotely perform one of updating, analyzing, and diagnosing the detection device based upon the accessed stored data.

6. 发明授权

EP1490712B1 SYSTEM AND METHOD FOR DETECTING A CONCEALED CURRENT CARRYING CONDUCTOR 有权
标题翻译：系统和方法，以允许不暴露电导体找到
公开(公告)号：EP1490712B1
公开(公告)日：2013-04-24
申请号：EP03706707.1
申请日：2003-02-19
申请人： RADIODETECTION LIMITED
发明人： PEARSON, Richard, David
IPC分类号： G01V3/08
CPC分类号： G01V3/081

7. 发明授权

EP1474709B1 ELECTRONIC MARKER LOCATOR SYSTEM AND METHOD 有权
标题翻译：系统和方法的电子标记在确定位置
公开(公告)号：EP1474709B1
公开(公告)日：2011-06-22
申请号：EP03739582.9
申请日：2003-02-14
申请人： RADIODETECTION LIMITED
发明人： ROYLE, John, Mark , PEARSON, Richard, David
IPC分类号： G01V3/08
CPC分类号： G01V3/081
摘要： A system and method to locate electronic marker balls includes receiving a signal representative of a detected marker ball. The signal includes the resolved in-phase and quadrature-phase (I and Q) components, each centered about a first frequency. The I and Q components are filtered in order to shift the first frequency to a second frequency and match the second frequency I and Q components to exponential decay characteristics associated with the marker balls. The second frequency I and Q components phase integrated in order to distinguish the components from noise. The integrating is based upon predetermined gain coefficients and produces integrated I and Q components in accordance with the predetermined gain coefficients. Next, a magnitude of the integrated I and Q components is determined to produce an I and Q magnitude vector and a noise variance associated with the magnitude vector is determined. Finally, the recursive coefficients are adjusted in accordance with the determined noise variance.

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