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1.发明申请公开(公告)号：US20190029023A1
公开(公告)日：2019-01-24
申请号：US16039363
申请日：2018-07-19
发明人： Ki Tae Moon , Sang Young Chu , Suk Kyun Hong
IPC分类号： H04W72/08
摘要： Bluetooth apparatus includes a control unit and a Bluetooth communication unit. The control unit divides Bluetooth channels into divided groups including a first group, a second group, and a third group and selects one from among the divided groups. The Bluetooth communication unit uses channels included in the selected divided group, in which the selected divided group does not include a frequency band of a Wi-Fi channel in use.
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公开(公告)号：US11057855B2
公开(公告)日：2021-07-06
申请号：US16156999
申请日：2018-10-10
发明人： Ki Tae Moon , Sang Young Chu , Suk Kyun Hong
摘要： The present invention relates to a method of detecting an access address of a physical channel in a Bluetooth signal to which channel coding is applied, the method including: performing initial signal processing in a unit of a specific length in a preamble section of a Bluetooth signal; and performing channel decoding in the specific length for a preamble part remained after the initial signal processing, wherein the specific length is a bit pattern length of a bitstream which is repeated in the preamble section or a length of a bitstream input for channel decoding. According to the present invention, channel decoding is performed in a unit of a bit pattern length of an access address from the remaining preamble part, and thus detection of the access address is available even though a start point of the access address is not provided.
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公开(公告)号：US10660107B2
公开(公告)日：2020-05-19
申请号：US16039363
申请日：2018-07-19
发明人： Ki Tae Moon , Sang Young Chu , Suk Kyun Hong
摘要： Bluetooth apparatus includes a control unit and a Bluetooth communication unit. The control unit divides Bluetooth channels into divided groups including a first group, a second group, and a third group and selects one from among the divided groups. The Bluetooth communication unit uses channels included in the selected divided group, in which the selected divided group does not include a frequency band of a Wi-Fi channel in use.
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公开(公告)号：US20170194925A1
公开(公告)日：2017-07-06
申请号：US15390429
申请日：2016-12-23
发明人： Ki Tae Moon , Sang Young Chu , Suk Kyun Hong
CPC分类号： H04B1/16 , H03G3/3068 , H03G3/3078 , H04B1/713
摘要： Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes an energy detector circuit, a radio frequency (RF) power detector circuit, an analog-digital converter circuit, and an automatic gain control circuit. The energy detector circuit detects a significant signal, having energy higher than background noise by a threshold value or more, from a received signal. The RF power detector circuit detects the magnitude of the received signal. The analog-digital converter circuit converts the analog value of the received signal into a digital value, and outputs the digital value. When the significant signal is detected, the automatic gain control circuit determines any one of predetermined coarse gain intervals to be a first coarse gain interval of the received signal by taking into account the magnitude of the received signal detected by the RF power detection circuit.
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公开(公告)号：US10511472B2
公开(公告)日：2019-12-17
申请号：US16041722
申请日：2018-07-20
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
摘要： The present invention relates to a method of simultaneously performing packet detection, symbol timing acquisition, and carrier frequency offset estimation in parallel using multiple correlation detection and a Bluetooth apparatus using the same, in which the Bluetooth apparatus receiving a frequency modulated signal includes a frequency demodulating unit converting the received signal into a similar amplitude modulated signal; and multiple correlation detectors generating multiple correlation indices from the converted signal, on a basis of an access address received from a link layer and a plurality of carrier frequency offset search windows. According to the present invention, since packet detection, symbol timing acquisition and carrier frequency offset estimation are simultaneously performed in parallel in the relatively long access address reception interval instead of the short preamble signal reception interval.
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公开(公告)号：US09831902B2
公开(公告)日：2017-11-28
申请号：US15390429
申请日：2016-12-23
发明人： Ki Tae Moon , Sang Young Chu , Suk Kyun Hong
CPC分类号： H04B1/16 , H03G3/3068 , H03G3/3078 , H04B1/713
摘要： Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes an energy detector circuit, a radio frequency (RF) power detector circuit, an analog-digital converter circuit, and an automatic gain control circuit. The energy detector circuit detects a significant signal, having energy higher than background noise by a threshold value or more, from a received signal. The RF power detector circuit detects the magnitude of the received signal. The analog-digital converter circuit converts the analog value of the received signal into a digital value, and outputs the digital value. When the significant signal is detected, the automatic gain control circuit determines any one of predetermined coarse gain intervals to be a first coarse gain interval of the received signal by taking into account the magnitude of the received signal detected by the RF power detection circuit.
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7.发明申请公开(公告)号：US20170195151A1
公开(公告)日：2017-07-06
申请号：US15390412
申请日：2016-12-23
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
IPC分类号： H04L27/148 , H04L27/22 , H04W4/00
CPC分类号： H04L27/148 , H04L27/0014 , H04L27/144 , H04L27/22 , H04W4/80
摘要： Disclosed herein are a Bluetooth signal receiving device and method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a frequency offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The sampler circuit generates a plurality of series of bit streams from the frequency proportion signal. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The frequency offset compensation circuit compensates the frequency proportion signal by using a measured error metric as a effective error metric when the plurality of series of bit streams satisfies the training bit pattern condition.
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8.发明授权公开(公告)号：US10015029B2
公开(公告)日：2018-07-03
申请号：US15390385
申请日：2016-12-23
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
IPC分类号： H04L27/144 , H04B7/26 , H04L27/156
CPC分类号： H04L27/144 , H04B7/26 , H04L7/0335 , H04L7/10 , H04L27/156
摘要： Disclosed herein are a Bluetooth signal receiving device and a Bluetooth Smart receiving method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a symbol timing offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift modulation on a received signal. The sampler circuit samples the baseband signal based on a symbol timing, and generates a plurality of series of bit streams based on sampled values. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The symbol timing offset compensation circuit compensates the symbol timing of the baseband signal based on a measured error metric as an effective error metric if the plurality of series of bit streams satisfies the training bit pattern condition.
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公开(公告)号：US20170195152A1
公开(公告)日：2017-07-06
申请号：US15390432
申请日：2016-12-23
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
IPC分类号： H04L27/148 , H04L27/22 , H04W4/00
CPC分类号： H04L27/148 , H04L7/042 , H04L7/10 , H04L27/156 , H04L27/22 , H04W4/80 , H04W8/26
摘要： Disclosed herein are a Bluetooth signal receiving device and method for receiving a Bluetooth signal. The Bluetooth signal receiving device includes a discriminator circuit and a correlator circuit. The discriminator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The correlator circuit detects a packet assigned to the Bluetooth signal receiving device by comparing the frequency proportion signal with an access address received from a link layer. The Bluetooth signal receiving device may detect a packet, assigned to the Bluetooth signal receiving device itself, by using access address information of a link layer.
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10.发明申请公开(公告)号：US20170195150A1
公开(公告)日：2017-07-06
申请号：US15390385
申请日：2016-12-23
发明人： Sang Young Chu , Ki Tae Moon , Suk Kyun Hong
IPC分类号： H04L27/144 , H04L27/156 , H04B7/26
CPC分类号： H04L27/144 , H04B7/26 , H04L7/0335 , H04L7/10 , H04L27/156
摘要： Disclosed herein are a Bluetooth signal receiving device and a Bluetooth Smart receiving method. The Bluetooth signal receiving device includes a frequency shift demodulator circuit, a sampler circuit, a training bit pattern discriminator circuit, and a symbol timing offset compensation circuit. The frequency shift demodulator circuit generates a baseband signal by performing frequency shift modulation on a received signal. The sampler circuit samples the baseband signal based on a symbol timing, and generates a plurality of series of bit streams based on sampled values. The training bit pattern discriminator circuit determines whether the plurality of series of bit streams generated by the sampler circuit satisfies a training bit pattern condition. The symbol timing offset compensation circuit compensates the symbol timing of the baseband signal based on a measured error metric as an effective error metric if the plurality of series of bit streams satisfies the training bit pattern condition.
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