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11. 发明授权

US07565120B2 Semiconductor integrated circuit and semiconductor integrated circuit for radio communication 有权
标题翻译：半导体集成电路和无线电通信半导体集成电路
公开(公告)号：US07565120B2
公开(公告)日：2009-07-21
申请号：US11585996
申请日：2006-10-25
申请人： Yutaka Igarashi , Yusaku Katsube , Akio Yamamoto
发明人： Yutaka Igarashi , Yusaku Katsube , Akio Yamamoto
IPC分类号： H04B1/06
CPC分类号： H04B1/30
摘要： In a signal receiving circuit of a direct conversion system applied with a semiconductor integrated circuit for radio communication having a PLL requiring a clock signal, an LNA requiring low-noise receiving characteristics, and others, a variable coupling line is provided between clock signal buffers and at an input stage of the PLL, so that coupling between the variable coupling line and an input terminal of the LNA and coupling between the variable coupling line and a GND terminal of the LNA are made equal to each other at frequencies of higher harmonic waves of a clock signal. When the input terminal and the GND terminal of the LNA are excited at the same phase, since no output occurs at an output terminal of the LNA, an output of the LNA does not contain any higher harmonic wave of a clock signal.
摘要翻译：在应用于具有需要时钟信号的PLL的无线电通信用半导体集成电路的直接转换系统的信号接收电路中，需要低噪声接收特性的LNA等，在时钟信号缓冲器和在PLL的输入级，使得可变耦合线与LNA的输入端之间的耦合以及可变耦合线与LNA的GND端之间的耦合使得在高次谐波的频率处彼此相等一个时钟信号。当LNA的输入端子和GND端子在相同相位被激励时，由于在LNA的输出端子处没有输出，所以LNA的输出不包含时钟信号的任何高次谐波。

12. 发明申请

US20090023411A1 RECEIVING CIRCUIT 有权
标题翻译：接收电路
公开(公告)号：US20090023411A1
公开(公告)日：2009-01-22
申请号：US11718101
申请日：2005-02-23
申请人： Yusaku Katsube , Akio Yamamoto
发明人： Yusaku Katsube , Akio Yamamoto
IPC分类号： H04B1/06 , H04B1/16
CPC分类号： H04B1/1018
摘要： The present invention is a receiving circuit used for a cellular phone that is reduced in size and can realize low power consumption. In a signal reception circuit that is used in a cellular phone that perform transmission and reception of a plurality of band wireless signals and includes a low-pass filter for removing blockers unnecessary for signal reception, the low-pass filter 104 is composed of a plurality of filters composed of a plurality of different circuit configurations and having a plurality of different pole positions, switching between a filter for blocker removal and a filter configuration with reduced sensitivity degradation is performed by combining a plurality of filters for each signal reception band, and by performing power-off of an unnecessary filter portion in the filter configuration, power consumption is reduced. By constituting a plurality of different filters using filters mutually complementing their characteristics, a redundant filter configuration can be avoided, so that the area thereof can be suppressed to necessity minimum, and cost can be reduced.
摘要翻译：本发明是用于移动电话的接收电路，其尺寸减小并且可以实现低功耗。在用于执行多个频带无线信号的发送和接收的蜂窝电话中使用的信号接收电路，并且包括用于去除不需要信号接收的阻塞器的低通滤波器，低通滤波器104由多个由多个不同的电路结构构成并且具有多个不同的极位置的滤波器，通过组合用于每个信号接收频带的多个滤波器，并且通过在滤波器结构中执行不需要的滤波器部分的断电，功耗降低。通过使用与其特性相互补充的滤波器构成多个不同的滤波器，可以避免冗余滤波器构造，从而可以将其面积抑制到必要最小，并且可以降低成本。

13. 发明申请

US20080003976A1 Communication terminal equipment 有权
标题翻译：通讯终端设备
公开(公告)号：US20080003976A1
公开(公告)日：2008-01-03
申请号：US11897432
申请日：2007-08-29
申请人： Yusaku Katsube , Koichi Terui
发明人： Yusaku Katsube , Koichi Terui
IPC分类号： H04M11/04
CPC分类号： H04W4/90 , H04W4/20 , H04W76/30 , H04W76/50
摘要： A cellular phone having a telephone communication unit and a data communication unit is provided with the function of notifying a user of emergency data communication immediately even when the emergency data communication was received while a call was in progress. There is provided a communication terminal equipment according to the present invention, which includes a data communication unit which receives emergency data communication, a display unit which displays the contents of the received data communication thereon, and a communication unit which communicates with a base station by phone or the like. The communication unit establishes a call link through a cellular phone network, and the data communication unit allows received data to interrupt a call upon emergency, displays it on the display unit and notifies a user that emergency data has been received.
摘要翻译：具有电话通信单元和数据通信单元的蜂窝电话具有即使当呼叫进行时接收到紧急数据通信时也立即通知用户紧急数据通信的功能。提供了根据本发明的通信终端设备，其包括接收紧急数据通信的数据通信单元，显示接收到的数据通信的内容的显示单元，以及通信单元，其与基站通信电话等。通信单元通过蜂窝电话网络建立呼叫链接，并且数据通信单元允许接收的数据在紧急情况下中断呼叫，将其显示在显示单元上并通知用户已经接收到紧急数据。

14. 发明授权

US07209190B2 Communication terminal device 失效
标题翻译：通信终端设备
公开(公告)号：US07209190B2
公开(公告)日：2007-04-24
申请号：US10806340
申请日：2004-03-23
申请人： Yusaku Katsube , Koichi Terui
发明人： Yusaku Katsube , Koichi Terui
IPC分类号： H04N5/44
CPC分类号： H04N21/4755 , H04H20/26 , H04H20/57 , H04H20/61 , H04H60/11 , H04H60/25 , H04H60/42 , H04H60/43 , H04H60/51 , H04H60/65 , H04H60/85 , H04H60/91 , H04H60/92 , H04N21/2265 , H04N21/41407 , H04N21/42202 , H04N21/438 , H04N21/4383 , H04N21/44209
摘要： A communication terminal device comprising a TV broadcasting tuner for receiving a TV broadcasting, a display device for displaying a video image of the received TV broadcasting, and a transceiver for communicating with a base station. The transceiver acquires base station information for an optional one of base station areas, and acquires a TV broadcasting frequency corresponding to the optional base station area. The TV broadcasting tuner receives the TV broadcasting at the acquired TV broadcasting frequency.
摘要翻译：一种通信终端装置，包括用于接收TV广播的TV广播调谐器，用于显示所接收的TV广播的视频图像的显示装置和用于与基站进行通信的收发器。收发信机为基站区域中的任意一个获取基站信息，并获取对应于可选基站区域的TV广播频率。电视广播调谐器以所获取的电视广播频率接收电视广播。

15. 发明申请

US20050122429A1 Communication terminal device 失效
标题翻译：通信终端设备
公开(公告)号：US20050122429A1
公开(公告)日：2005-06-09
申请号：US10806340
申请日：2004-03-23
申请人： Yusaku Katsube , Koichi Terui
发明人： Yusaku Katsube , Koichi Terui
IPC分类号： H03J5/02 , H04B1/16 , H04H20/00 , H04H20/57 , H04H60/42 , H04H60/51 , H04H60/85 , H04N5/44 , H04N7/16
CPC分类号： H04N21/4755 , H04H20/26 , H04H20/57 , H04H20/61 , H04H60/11 , H04H60/25 , H04H60/42 , H04H60/43 , H04H60/51 , H04H60/65 , H04H60/85 , H04H60/91 , H04H60/92 , H04N21/2265 , H04N21/41407 , H04N21/42202 , H04N21/438 , H04N21/4383 , H04N21/44209
摘要： A communication terminal device comprising a TV broadcasting tuner for receiving a TV broadcasting, a display device for displaying a video image of the received TV broadcasting, and a transceiver for communicating with a base station. The transceiver acquires base station information for an optional one of base station areas, and acquires a TV broadcasting frequency corresponding to the optional base station area. The TV broadcasting tuner receives the TV broadcasting at the acquired TV broadcasting frequency.
摘要翻译：一种通信终端装置，包括用于接收TV广播的TV广播调谐器，用于显示所接收的TV广播的视频图像的显示装置和用于与基站进行通信的收发器。收发信机为基站区域中的任意一个获取基站信息，并获取对应于可选基站区域的TV广播频率。电视广播调谐器以所获取的电视广播频率接收电视广播。

16. 发明授权

US08594605B2 Semiconductor integrated circuit and operation method of the same 有权
标题翻译：半导体集成电路及其运算方法相同
公开(公告)号：US08594605B2
公开(公告)日：2013-11-26
申请号：US13357664
申请日：2012-01-25
申请人： Yusaku Katsube , Kosuke Tsuiji , Yutaka Igarashi , Akio Yamamoto
发明人： Yusaku Katsube , Kosuke Tsuiji , Yutaka Igarashi , Akio Yamamoto
IPC分类号： H04B1/10 , H04K3/00
CPC分类号： H03H11/1252 , H03H11/1291 , H03H2210/012 , H03H2210/015 , H03H2210/025 , H03H2210/028
摘要： The present invention is directed to accurately set a frequency characteristic of a filter integrated in a semiconductor integrated circuit. A semiconductor integrated circuit includes a filter circuit, a cutoff frequency calibration circuit, and a Q-factor calibration circuit. The cutoff frequency calibration circuit adjusts cutoff frequency of the filter circuit to a desired value by adjusting capacitance components of the filter circuit. After adjustment of the cutoff frequency of the filter circuit by the cutoff frequency calibration circuit, the Q-factor calibration circuit adjusts the Q factor of the filter circuit to a desired value by adjusting a resistance component of the filter circuit.
摘要翻译：本发明旨在精确地设定集成在半导体集成电路中的滤波器的频率特性。半导体集成电路包括滤波电路，截止频率校准电路和Q因子校准电路。截止频率校准电路通过调整滤波器电路的电容分量来将滤波器电路的截止频率调整到期望值。在通过截止频率校准电路调节滤波电路的截止频率之后，Q因子校准电路通过调整滤波器电路的电阻分量来将滤波器电路的Q因子调节到期望值。

17. 发明授权

US08538364B2 Filter circuit and receiver using the same 有权
标题翻译：滤波电路和接收机使用相同
公开(公告)号：US08538364B2
公开(公告)日：2013-09-17
申请号：US12789771
申请日：2010-05-28
申请人： Yusaku Katsube , Junichi Takahashi , Masaaki Yamada , Toshihito Habuka , Kenichi Shibata , Fumihito Yamaguchi
发明人： Yusaku Katsube , Junichi Takahashi , Masaaki Yamada , Toshihito Habuka , Kenichi Shibata , Fumihito Yamaguchi
IPC分类号： H04B1/10 , H04K3/00
CPC分类号： H04B1/30 , H03H7/0153 , H03H11/1291 , H03H2210/012 , H03H2210/025 , H03H2210/036 , H03H2250/00
摘要： Gain setting can be performed at high speed while reducing DC offset due to a filter cutoff frequency changeover without the need for input signal muting. A filter circuit having first and second filters is capable of allowing settings of first and second cutoff frequencies. First and second filter switch circuits and a charging circuit including a charging resistor and a charging switch are provided. For a first time period, the first switch circuit is controllably turned on while the second switch circuit is controllably turned off, thereby providing the first filter function. For a second time period, the first switch circuit is controllably turned off while the second switch circuit is controllably turned on, thereby providing the second filter function. For the first time period, the charging switch is controllably turned on so that the second capacitor is charged via the charging resistor.
摘要翻译：增益设置可以高速执行，同时减少由于滤波器截止频率切换引起的直流偏移，而不需要输入信号静音。具有第一和第二滤波器的滤波器电路能够允许第一和第二截止频率的设置。提供第一和第二滤波器开关电路以及包括充电电阻器和充电开关的充电电路。在第一时间段中，第一开关电路被可控地导通，而第二开关电路被可控地关断，从而提供第一滤波器功能。对于第二时间段，第一开关电路在第二开关电路被可控地接通的同时被可控制地截止，从而提供第二滤波器功能。在第一时间段中，充电开关被可控地导通，使得第二电容器经由充电电阻器充电。

18. 发明授权

US08525584B2 Automatic cutoff frequency adjusting circuit and portable digital assistant 有权
标题翻译：自动截止频率调节电路和便携式数字助理
公开(公告)号：US08525584B2
公开(公告)日：2013-09-03
申请号：US13180303
申请日：2011-07-11
申请人： Yusaku Katsube , Yutaka Igarashi , Akio Yamamoto
发明人： Yusaku Katsube , Yutaka Igarashi , Akio Yamamoto
IPC分类号： H03K5/00
CPC分类号： H03H11/1291 , H03J2200/08 , H03J2200/10
摘要： The disclosed invention enables the cutoff frequency of a filter to be automatically adjusted to an arbitrary setting value within the adjustment range. An automatic cutoff frequency adjusting circuit includes a voltage/current converter circuit, a charge circuit, a discharge circuit, a digital capacitance having a plurality of electrostatic capacitances, a comparator for comparing a voltage inputted to the digital capacitance with a reference voltage, and a capacitance control circuit for controlling the digital capacitance. The time until the comparator detects that the voltage inputted to the digital capacitance is higher than the reference voltage after a reset signal has become a predetermined logic level is measured, and the digital capacitance is controlled by repeating, under a predetermined condition, processing for obtaining a next setting value of the digital capacitance, based on a measurement result, a target value of the digital capacitance, and the current value of the digital capacitance.
摘要翻译：所公开的发明使得能够将滤波器的截止频率自动调整到调整范围内的任意设定值。自动截止频率调节电路包括电压/电流转换器电路，充电电路，放电电路，具有多个静电电容的数字电容，用于将输入到数字电容的电压与参考电压进行比较的比较器，以及用于控制数字电容的电容控制电路。在比较器检测到在复位信号已经变为预定逻辑电平之后，比较器检测到输入到数字电容的电压高于参考电压的时间，并且通过在预定条件下重复以获得的处理来控制数字电容基于测量结果，数字电容的目标值和数字电容的当前值的数字电容的下一个设定值。

19. 发明授权

US08463225B2 Semiconductor integrated circuit and operation method of the same 有权
标题翻译：半导体集成电路及其运算方法相同
公开(公告)号：US08463225B2
公开(公告)日：2013-06-11
申请号：US13353567
申请日：2012-01-19
申请人： Yutaka Igarashi , Yusaku Katsube
发明人： Yutaka Igarashi , Yusaku Katsube
IPC分类号： H04B1/28
CPC分类号： H04B1/30 , H03D2200/0045 , H03D2200/0047
摘要： The present invention is provided to shorten the period of DC offset cancellation operation. One of terminals of two calibration resistors is connected to the differential output terminals of an active low pass filter having a filter process and an amplification function, and two input terminals of a voltage comparator and two terminals of a switch are connected to the other terminal of the two calibration resistors. In a calculation period of calculating digital control signals for reducing DC offset voltage, the voltage comparator detects calibration voltage depending on a voltage drop of one of the calibration resistors caused by analog current of a digital-to-analog converter. In a calibration period of reducing the DC offset voltage, the calibration analog current of the digital-to-analog converter responding to the digital control signal is passed to the input side of the filter via the switch.
摘要翻译：提供本发明以缩短DC偏移消除操作的周期。两个校准电阻器的一个端子连接到具有滤波处理和放大功能的有源低通滤波器的差分输出端子，电压比较器的两个输入端子和开关的两个端子连接到两个校准电阻。在计算用于减小DC偏移电压的数字控制信号的计算周期中，电压比较器根据由数模转换器的模拟电流引起的校准电阻之一的电压降检测校准电压。在减小DC偏移电压的校准周期中，响应于数字控制信号的数模转换器的校准模拟电流通过开关传递到滤波器的输入侧。

20. 发明授权

US08331895B2 Receiving circuit 失效
标题翻译：接收电路
公开(公告)号：US08331895B2
公开(公告)日：2012-12-11
申请号：US12846618
申请日：2010-07-29
申请人： Yusaku Katsube , Akio Yamamoto
发明人： Yusaku Katsube , Akio Yamamoto
IPC分类号： H04B1/10
CPC分类号： H04B1/1018
摘要： A receiving circuit is provided for performing reception of a plurality of band signals and suppression of blockers that remain in the plurality of band signals being received and converted in frequency. The receiving circuit includes a first low-pass filter that has a first pole position to suppress blockers remaining in a received signal by the first pole position, and a second low-pass filter that has a second pole position to suppress blockers remaining in a signal that has passed through said first low-pass filter by the second pole position. A switch that switches on/off an input-output path including the filters so that the received signal passes through said first filter without passing through the second filter when receiving a first band signal, while the received signal passes through both filters when receiving a second band signal different from the first band signal.
摘要翻译：提供接收电路，用于执行多个频带信号的接收和抑制在频率上接收和转换的多个频带信号中的阻塞。接收电路包括第一低通滤波器，该第一低通滤波器具有第一极位置，以通过第一极位置来抑制接收信号中残留的阻滞剂;以及第二低通滤波器，其具有第二极位置以抑制信号中残留的阻滞剂其通过所述第一低通滤波器通过第二极位置。一种开关，其接通/关闭包括滤波器的输入 - 输出路径，使得当接收到第一频带信号时接收信号通过所述第一滤波器而不通过第二滤波器，同时当接收到的信号在接收到第二滤波器时通过两个滤波器频带信号与第一频带信号不同。

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