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71. 发明申请

US20100321114A1 AMPLIFIER CIRCUIT AND RECEIVER USING THE SAME 审中-公开
标题翻译：使用放大器电路和接收器
公开(公告)号：US20100321114A1
公开(公告)日：2010-12-23
申请号：US12918419
申请日：2009-02-24
申请人： Eiji Okada , Daisuke Nishimura , Hiroaki Ozeki , Noriaki Saito , Susumu Fukushima
发明人： Eiji Okada , Daisuke Nishimura , Hiroaki Ozeki , Noriaki Saito , Susumu Fukushima
IPC分类号： H03G3/30
CPC分类号： H03G3/3068 , H03G3/3078
摘要： An amplifier circuit includes a variable gain amplifier that amplifies and outputs a signal from an output port, a controller operable to change an gain of the variable gain amplifier, a mixer that mixes the signal output from the output port of the variable gain amplifier with a local oscillating signal to heterodyne the signal and outputs the heterodyned signal, a filter that outputs a signal component having a predetermined frequency out of the signal output from the mixer, and a detector that detects a power level based on power of the signal output from the filter. The controller is operable to change the gain according to the first power level such that a quality level representing quality of the signal output from the filter becomes a target quality level immediately after the gain is changed. The amplifier circuit can have small power consumption.
摘要翻译：放大器电路包括放大并输出来自输出端口的信号的可变增益放大器，可操作以改变可变增益放大器的增益的控制器，将从可变增益放大器的输出端口输出的信号与本地振荡信号外差信号并输出外差信号;滤波器，其输出从混频器输出的信号中具有预定频率的信号分量;以及检测器，其基于从所述混频器输出的信号的功率来检测功率电平过滤。控制器可操作以根据第一功率电平改变增益，使得表示从滤波器输出的信号的质量的质量水平在增益改变之后立即成为目标质量水平。放大器电路可以具有较小的功耗。

72. 发明授权

US07818635B2 Digital broadcast receiver 有权
标题翻译：数字广播接收机
公开(公告)号：US07818635B2
公开(公告)日：2010-10-19
申请号：US11911986
申请日：2006-04-27
申请人： Yasunobu Tsukio , Hiroaki Ozeki , Keiichi Kitazawa
发明人： Yasunobu Tsukio , Hiroaki Ozeki , Keiichi Kitazawa
IPC分类号： G06F11/00
CPC分类号： H04B7/0877 , H04B7/0802 , H04B7/0837 , H04L27/2647 , H04W52/0245 , Y02D70/10 , Y02D70/444
摘要： In a digital broadcast receiver, when a bit error rate (BER) is larger than a threshold in a BER determining part, power is supplied to a first tuner and a second tuner for diversity reception. When the BER is smaller than the threshold, power supply to one of the first tuner and the second tuner is stopped for single reception. This structure allows power supply to one of the tuners to be stopped in excellent reception environments, thus reducing power consumption.
摘要翻译：在数字广播接收机中，当误码率（BER）大于BER确定部分中的阈值时，电力被提供给第一调谐器和用于分集接收的第二调谐器。当BER小于阈值时，停止向第一调谐器和第二调谐器之一供电以进行单次接收。这种结构允许在优良的接收环境中停止调谐器之一的电力供应，从而降低功耗。

73. 发明申请

US20090074092A1 OFDM RECEPTION DEVICE AND OFDM RECEIVER USING THE SAME 有权
标题翻译： OFDM接收设备和使用该接收设备的OFDM接收机
公开(公告)号：US20090074092A1
公开(公告)日：2009-03-19
申请号：US12066403
申请日：2007-05-30
申请人： Yasunobu Tsukio , Hiroaki Ozeki , Sigeru Soga
发明人： Yasunobu Tsukio , Hiroaki Ozeki , Sigeru Soga
IPC分类号： H04L27/28 , H04L27/06 , H04L1/02
CPC分类号： H04L1/20 , H04B7/0802 , H04L25/022 , H04L25/0232 , H04L25/03159 , H04L27/2647
摘要： An OFDM reception device includes: a first channel estimation unit for estimating a channel distortion by using a signal that is supplied from the reception unit and has a first time interval; a second channel estimation unit for estimating a channel distortion by using a signal that is supplied from the reception unit and has a second time interval shorter than the first time interval; a selection unit for selecting and outputting one of a signal from the first channel estimation unit and a signal from the second channel estimation unit, according to a control signal from the control unit; and a correction unit for correcting a reception signal supplied from the reception unit, according to the channel estimation signal from the selection unit. The control unit determines the control signal to be supplied to the selection unit, according a reception state of the reception unit.
摘要翻译： OFDM接收装置包括：第一信道估计单元，用于通过使用从接收单元提供并具有第一时间间隔的信号来估计信道失真; 第二信道估计单元，用于通过使用从所述接收单元提供并且具有比所述第一时间间隔短的第二时间间隔的信号来估计信道失真; 选择单元，用于根据来自控制单元的控制信号选择并输出来自第一信道估计单元的信号和来自第二信道估计单元的信号中的一个; 以及校正单元，用于根据来自选择单元的信道估计信号校正从接收单元提供的接收信号。控制单元根据接收单元的接收状态确定要提供给选择单元的控制信号。

74. 发明申请

US20080165758A1 Wireless Terminal Device 有权
标题翻译：无线终端设备
公开(公告)号：US20080165758A1
公开(公告)日：2008-07-10
申请号：US10549496
申请日：2004-03-25
申请人： Hisaya Kato , Hiroaki Ozeki
发明人： Hisaya Kato , Hiroaki Ozeki
IPC分类号： H04B7/212
CPC分类号： H04H40/18 , H03J2200/12 , H04H20/42 , H04H60/51 , H04N21/41407 , H04N21/4263
摘要： A first switching circuit (21) outputs a first radio signal representing a plurality of time-division multiplexed pro-grams and a second radio signal other than the first radio signal, one at a time according to a switching signal. A voltage control oscillator (27) outputs a local signal at a frequency suitable for whichever signal outputted. Using the local signal generated, a frequency converter (24) frequency converts the first and second radio signals to first and second baseband signals, respectively. Via a second switching circuit (31), a first baseband unit (40) and a second baseband unit (50) are supplied with the first and second baseband signals, respectively, and demodulate them to first and second data signals. A switching unit (60) supplies the switching signal indicating periods during which the first radio signal represents a user-selected program, to a tuner unit (20) where the first and second radio signals are processed by time-sharing.
摘要翻译：第一切换电路（21）根据切换信号一次一个输出表示多个时分多路复用程序的第一无线信号和第一无线信号以外的第二无线信号。电压控制振荡器（27）输出适合于输出哪个信号的频率的本地信号。使用所生成的本地信号，频率转换器（24）分别将第一和第二无线电信号频率转换为第一和第二基带信号。通过第二切换电路（31），第一基带单元（40）和第二基带单元（50）分别被提供有第一和第二基带信号，并将其解调为第一和第二数据信号。切换单元（60）将指示第一无线电信号表示用户选择的节目的周期的切换信号提供给通过分时处理第一和第二无线电信号的调谐器单元（20）。

75. 发明申请

US20070167143A1 Receiver and electronic device using the same 失效
标题翻译：接收机和电子设备使用相同
公开(公告)号：US20070167143A1
公开(公告)日：2007-07-19
申请号：US10588109
申请日：2006-01-23
申请人： Eiji Okada , Hiroaki Ozeki
发明人： Eiji Okada , Hiroaki Ozeki
IPC分类号： H04B1/06
CPC分类号： H03J3/08 , H03J2200/18 , H03L7/0805 , H03L7/0812
摘要： A receiver and an electronic device are provided that suppress deterioration of the signal waveform of a symbol. The receiver has filter (12) that sends out an output signal having a symbol at an arbitrary time interval; and intermittent operation part (13) that controls filter (12) intermittently at an arbitrary time interval, according to an output signal supplied from filter (12). The makeup prevents deterioration of the signal waveform of a symbol, by setting the timing for switching the signal for controlling the frequency characteristic of filter (12), to an arbitrary period between symbol periods such as a guard interval.
摘要翻译：提供一种接收器和电子设备，其抑制符号的信号波形的劣化。接收器具有滤波器（12），其以任意时间间隔发出具有符号的输出信号; 以及根据从过滤器（12）提供的输出信号以任意的时间间隔间歇地控制过滤器（12）的间歇操作部（13）。通过将用于控制滤波器（12）的频率特性的信号切换的定时设定为保护间隔等符号周期之间的任意周期，可以防止符号的信号波形的劣化。

76. 发明授权

US07054395B2 Automatic gain control for digital demodulation apparatus 失效
标题翻译：数字解调装置的自动增益控制
公开(公告)号：US07054395B2
公开(公告)日：2006-05-30
申请号：US09853682
申请日：2001-05-14
申请人： Hiroshi Azakami , Takaaki Konishi , Hisaya Kato , Naoya Tokunaga , Hiroaki Ozeki , Kazuya Ueda
发明人： Hiroshi Azakami , Takaaki Konishi , Hisaya Kato , Naoya Tokunaga , Hiroaki Ozeki , Kazuya Ueda
IPC分类号： H04L27/08
CPC分类号： H03G3/3089
摘要： A digital demodulation apparatus automatically controls gain based on a state of receiving a digital modulated signal. The digital demodulation apparatus amplifies a digital modulated signal wave received through the air with the gain automatically controlled so as to have a predetermined amplitude. In the digital demodulation apparatus, a receive level variation detector detects receive level variation, an amount of noise components of the received digital signal wave. A gain controller 15 controls the gain with a receive level variation adaptive control signal based on the detected receive level variation, the amount of noise components.
摘要翻译：数字解调装置根据接收数字调制信号的状态自动控制增益。数字解调装置以自动控制的增益放大通过空气接收的数字调制信号波，以具有预定的幅度。在数字解调装置中，接收电平变化检测器检测接收电平变化，接收的数字信号波的噪声分量的量。增益控制器15基于检测到的接收电平变化，噪声分量的量，利用接收电平变化自适应控制信号来控制增益。

77. 发明授权

US06882693B2 Digital signal receiver 失效
标题翻译：数字信号接收机
公开(公告)号：US06882693B2
公开(公告)日：2005-04-19
申请号：US09735630
申请日：2000-12-14
申请人： Hiroaki Ozeki , Masami Takigawa , Hitonobu Furukawa , Junichi Fukutani , Kazuyori Domoto
发明人： Hiroaki Ozeki , Masami Takigawa , Hitonobu Furukawa , Junichi Fukutani , Kazuyori Domoto
IPC分类号： H03H17/06 , H04B1/10 , H04B1/16 , H04B1/26 , H04B7/005 , H04L27/38 , H04N5/44 , H04L27/08 , H03D1/04
CPC分类号： H04L27/3809
摘要： A digital signal receiver capable of obtaining a favorable receiving performance even if the input signal level changes rapidly is presented. A control voltage for controlling a variable gain amplifier is read by a microprocessor, and an operation-starting point of the variable gain amplifier is shifted by using this control voltage. As a result, a favorable level fluctuation response characteristic is obtained regardless of the input level.
摘要翻译：即使输入信号电平急剧变化，也能够得到良好的接收性能的数字信号接收机。用于控制可变增益放大器的控制电压由微处理器读取，并且通过使用该控制电压来移动可变增益放大器的操作起始点。结果，无论输入电平如何，都获得良好的电平波动响应特性。

78. 发明授权

US06744830B1 Digital broadcasting signal receiver 失效
标题翻译：数字广播信号接收机
公开(公告)号：US06744830B1
公开(公告)日：2004-06-01
申请号：US09670692
申请日：2000-09-28
申请人： Hitonobu Furukawa , Hiroaki Ozeki , Masami Takigawa , Junichi Fukutani , Yuichi Watanabe , Kazuyori Domoto
发明人： Hitonobu Furukawa , Hiroaki Ozeki , Masami Takigawa , Junichi Fukutani , Yuichi Watanabe , Kazuyori Domoto
IPC分类号： H04L2708
CPC分类号： H04N5/4401 , H03G3/3089 , H04H40/18 , H04L7/04 , H04N5/50 , H04N21/4384
摘要： A receiver for a digital broadcasting service have a compatibility between tuning to a desired channel at a short period of time and an improve ment of a bit error rate (BER) characteristics. In a case where a target wave is fluctuated, to prevent the receiver from having a significant declination of BER characteristics and to ensure the reproduction of high quality images, the receiver includes an automatic gain controller including a loop filter in which the frequency range of the loop filter can be switched according to an output of a synchronous state discriminator. The frequency band of the loop filter is selectively adjusted to one setting designed for minimizing the duration for tuning a desired channel before a synchronous state is established. After the synchronous state established, the frequency band of the loop filter is switched to another setting designed for enhancing BER characteristics.
摘要翻译：用于数字广播服务的接收机具有在短时间段内调谐到期望信道和提高误码率（BER）特性之间的兼容性。在目标波波动的情况下，为了防止接收机具有BER特性的显着偏差并且确保高质量图像的再现，接收机包括自动增益控制器，该自动增益控制器包括环路滤波器，其中频率范围可以根据同步状态鉴别器的输出来切换环路滤波器。环路滤波器的频带被选择性地调整为设计用于在建立同步状态之前最小化用于调谐期望信道的持续时间的一个设置。在建立同步状态之后，环路滤波器的频带被切换到另一个设计用于提高BER特性的设置。

79. 发明授权

US5239379A Television signal receiving apparatus 失效
标题翻译：电视信号接收装置
公开(公告)号：US5239379A
公开(公告)日：1993-08-24
申请号：US915552
申请日：1992-07-20
申请人： Yoshio Abe , Seiji Sakashita , Ippei Kanno , Hiroaki Ozeki
发明人： Yoshio Abe , Seiji Sakashita , Ippei Kanno , Hiroaki Ozeki
IPC分类号： H04B7/02 , H04N5/21 , H04N5/44 , H04N5/455 , H04N5/46 , H04N7/00 , H04N11/24
CPC分类号： H04N5/211 , H04N11/004 , H04N5/46
摘要： A television signal receiving apparatus receives a new standard television broadcasting signal in an environment in which conventional standard television broadcasting signals are present. A first tuner coupled to a first antenna extracts a first television signal which contains a new standard television signal and a conventional standard television signal of the specific channel at a first ratio, and a second tuner coupled to a second antenna extracts a second television signal which contains the new standard television signal and the conventional standard television signal of the specific channel at a second ratio. In an operation unit, a multiplier multiples the second television signal by a predetermined coefficient, and a subtracter subtracts an output signal of the multiplier from the first television signal. An output signal of the subtracter becomes the new standard television signal when the coefficient has a specific value.

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