专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070011482A1 Clock generator, radio receiver using the same, function system, and sensing system 审中-公开
标题翻译：时钟发生器，使用相同的无线电接收器，功能系统和传感系统
公开(公告)号：US20070011482A1
公开(公告)日：2007-01-11
申请号：US11438589
申请日：2006-05-22
申请人： Akihide Sai , Takeshi Ueno , Takafumi Yamaji , Tetsuro Itakura
发明人： Akihide Sai , Takeshi Ueno , Takafumi Yamaji , Tetsuro Itakura
IPC分类号： G06F1/00
CPC分类号： H03L7/23 , H03L7/18
摘要： A clock generator having phase locked loops to receive reference signals from a shared reference signal source and generate clock signals differing in frequency, respectively, includes a phase comparator which generates a voltage signal in response to a phase difference between a phase of the reference signal and a phase of a feedback signal, a VCO controlled by a voltage signal from the phase comparator, and a frequency divider group connected in cascade in a feedback loop between an output of the VCO and an input of a feedback signal, and takes out a clock signals from each output of the frequency divider group.
摘要翻译：具有锁相环的时钟发生器分别接收来自共享参考信号源的参考信号并且分别产生频率不同的时钟信号，该相位比较器响应于参考信号的相位和相位差之间的相位差产生电压信号反馈信号的相位，由来自相位比较器的电压信号控制的VCO和在VCO的输出与反馈信号的输入之间的反馈回路中级联连接的分频器组，并且取出时钟来自分频器组的每个输出的信号。

2. 发明申请

US20060139191A1 D/A converter and communication apparatus 有权
公开(公告)号：US20060139191A1
公开(公告)日：2006-06-29
申请号：US11319106
申请日：2005-12-27
申请人： Akihide Sai , Takeshi Ueno , Takafumi Yamaji
发明人： Akihide Sai , Takeshi Ueno , Takafumi Yamaji
IPC分类号： H03M1/00
CPC分类号： H03M1/747
摘要： A D/A converter includes a plurality of current sources configured to be on or off according to input digital data; a constant voltage source configured to apply a constant voltage to the current sources; current supply wirings provided between the constant voltage source and the respective current source, the current supply wirings respectively having equal length from the constant voltage source to the respective current source; ground-side wirings summing up output currents from the plurality of current sources; and output terminals connected to the ground-side wirings, the output terminals outputting analogue data corresponding to the input digital data.

3. 发明授权

US07482959B2 D/A converter and communication apparatus 有权
标题翻译： D / A转换器和通信装置
公开(公告)号：US07482959B2
公开(公告)日：2009-01-27
申请号：US11319106
申请日：2005-12-27
申请人： Akihide Sai , Takeshi Ueno , Takafumi Yamaji
发明人： Akihide Sai , Takeshi Ueno , Takafumi Yamaji
IPC分类号： H03M1/66
CPC分类号： H03M1/747
摘要： A D/A converter includes a plurality of current sources configured to be on or off according to input digital data; a constant voltage source configured to apply a constant voltage to the current sources; current supply wirings provided between the constant voltage source and the respective current source, the current supply wirings respectively having equal length from the constant voltage source to the respective current source; ground-side wirings summing up output currents from the plurality of current sources; and output terminals connected to the ground-side wirings, the output terminals outputting analogue data corresponding to the input digital data.
摘要翻译： D / A转换器包括根据输入数字数据配置为开或关的多个电流源; 恒定电压源，被配置为向所述电流源施加恒定电压; 设置在恒压源和相应电流源之间的电流供应布线，电流源布线分别具有从恒定电压源到相应电流源的相等长度; 接地侧布线将来自多个电流源的输出电流相加; 和与地侧布线连接的输出端子，输出端子输出对应于输入数字数据的模拟数据。

4. 发明申请

US20090033427A1 OSCILLATOR, PLL OSCILLATOR, RADIO APPARATUS 审中-公开
标题翻译：振荡器，PLL振荡器，无线电设备
公开(公告)号：US20090033427A1
公开(公告)日：2009-02-05
申请号：US12246871
申请日：2008-10-07
申请人： Akihide Sai , Hidenori Okuni , Takafumi Yamaji
发明人： Akihide Sai , Hidenori Okuni , Takafumi Yamaji
IPC分类号： H03L7/00
CPC分类号： H03L7/0995 , H03L7/0891 , H03L7/18
摘要： An oscillator includes a plurality of oscillating units connected in parallel with each other, and a control unit which controls the number of parallel connections of the plurality of oscillating units based on an instruction signal indicating accuracy to be tolerated with respect to oscillation outputs of the oscillating units.
摘要翻译：振荡器包括彼此并联连接的多个振荡单元，以及控制单元，其基于指示信号来控制多个振荡单元的并联数量，所述指令信号指示相对于振荡器的振荡输出允许的精度单位。

5. 发明申请

US20070182493A1 OSCILLATOR, PLL OSCILLATOR, RADIO APPARATUS 失效
标题翻译：振荡器，PLL振荡器，无线电设备
公开(公告)号：US20070182493A1
公开(公告)日：2007-08-09
申请号：US11532630
申请日：2006-09-18
申请人： Akihide Sai , Hidenori Okuni , Takafumi Yamaji
发明人： Akihide Sai , Hidenori Okuni , Takafumi Yamaji
IPC分类号： H03L7/00
CPC分类号： H03L7/0995 , H03L7/0891 , H03L7/18
摘要： An oscillator includes a plurality of oscillating units connected in parallel with each other, and a control unit which controls the number of parallel connections of the plurality of oscillating units based on an instruction signal indicating accuracy to be tolerated with respect to oscillation outputs of the oscillating units.
摘要翻译：振荡器包括彼此并联连接的多个振荡单元，以及控制单元，其基于指示信号来控制多个振荡单元的并联数量，所述指令信号指示相对于振荡器的振荡输出允许的精度单位。

6. 发明授权

US07449961B2 Parallel controlled connections of the plurality of ring oscillator units, PLL, radio apparatus 失效
标题翻译：多个环形振荡器单元，PLL，无线电设备的并行控制连接
公开(公告)号：US07449961B2
公开(公告)日：2008-11-11
申请号：US11532630
申请日：2006-09-18
申请人： Akihide Sai , Hidenori Okuni , Takafumi Yamaji
发明人： Akihide Sai , Hidenori Okuni , Takafumi Yamaji
IPC分类号： H03L7/00
CPC分类号： H03L7/0995 , H03L7/0891 , H03L7/18
摘要： An oscillator includes a plurality of oscillating units connected in parallel with each other, and a control unit which controls the number of parallel connections of the plurality of oscillating units based on an instruction signal indicating accuracy to be tolerated with respect to oscillation outputs of the oscillating units.
摘要翻译：振荡器包括彼此并联连接的多个振荡单元，以及控制单元，其基于指示信号来控制多个振荡单元的并联数量，所述指令信号指示相对于振荡器的振荡输出允许的精度单位。

7. 发明申请

US20100151800A1 COMMUNICATION DEVICE AND COMMUNICATION METHOD 审中-公开
标题翻译：通信设备和通信方法
公开(公告)号：US20100151800A1
公开(公告)日：2010-06-17
申请号：US12558784
申请日：2009-09-14
申请人： Ippei Akita , Takafumi Yamaji , Akihide Sai
发明人： Ippei Akita , Takafumi Yamaji , Akihide Sai
IPC分类号： H04B1/40 , H04B1/26
CPC分类号： H04B1/109 , H04W52/0238 , Y02D70/40
摘要： A communication device includes: a first oscillator to generate a local signal based on a control signal for regulating at least one of phase oise and jitter in the local signal; a frequency converter to convert a first signal having first frequency to a second signal having second frequency by using the local signal; a filter to remove undesired signal component from the second signal and output a third signal; and a controller to generate the control signal based on the second signal and the third signal.
摘要翻译：通信设备包括：第一振荡器，用于基于用于调节本地信号中的相位噪声和抖动中的至少一个的控制信号来产生本地信号; 频率转换器，通过使用本地信号将具有第一频率的第一信号转换成具有第二频率的第二信号; 滤波器，用于从所述第二信号中去除不需要的信号分量并输出第三信号; 以及控制器，用于基于第二信号和第三信号产生控制信号。

8. 发明授权

US07884749B2 A/D converting apparatus 失效
标题翻译： A / D转换装置
公开(公告)号：US07884749B2
公开(公告)日：2011-02-08
申请号：US12349180
申请日：2009-01-06
申请人： Masanori Furuta , Tomohiko Ito , Takafumi Yamaji , Tetsuro Itakura
发明人： Masanori Furuta , Tomohiko Ito , Takafumi Yamaji , Tetsuro Itakura
IPC分类号： H03M1/38
CPC分类号： H03M1/1215 , H03M1/162 , H03M1/164 , H03M1/468
摘要： An A/D converting apparatus includes a first A/D converter to sample an analog input signal having a D/A converter to generate a comparative signal for successive comparison with the analog input signal, a signal generator generate a differential signal between the analog input signal and the comparative signal, and a comparator to compare the comparative signal with a standard value to generate a first digital signal exhibiting high-order bit; an amplifier to amplify the differential signal to generate a residue signal; and a second A/D converter to sample the residue signal to generate a second digital signal exhibiting low-order bit.
摘要翻译： A / D转换装置包括：第一A / D转换器，对具有D / A转换器的模拟输入信号进行采样以产生用于与模拟输入信号连续比较的比较信号，信号发生器在模拟输入端之间产生差分信号信号和比较信号，以及比较器，用于将比较信号与标准值进行比较，以产生呈现高位的第一数字信号; 放大器，用于放大差分信号以产生残余信号; 以及第二A / D转换器，用于对残留信号进行采样以产生呈现低阶位的第二数字信号。

9. 发明授权

US07414468B2 Amplifier, filter using the same, and radio communication device 失效
标题翻译：放大器，使用相同的滤波器和无线电通信设备
公开(公告)号：US07414468B2
公开(公告)日：2008-08-19
申请号：US11928766
申请日：2007-10-30
申请人： Takafumi Yamaji , Rui Ito , Tetsuro Itakura
发明人： Takafumi Yamaji , Rui Ito , Tetsuro Itakura
IPC分类号： H03F3/45
CPC分类号： H03F3/193 , H03F3/45085 , H03F3/45183 , H03F2203/45352
摘要： An amplifier includes an amplification unit which amplify a first difference between first and second input signals, a second difference between second and third input signals and a third difference between third and first input signals by a differential mode gain, and amplify an average of the first, second and third input signal by a common mode gain, for outputting a first output signal corresponding to a sum of the amplified first difference and the amplified average, a second output signal corresponding to a sum of the amplified second difference and the amplified average, and a third output signal corresponding to a sum of the amplified third difference and amplified average; first, second; and a reduction circuit which reduces the common mode gain less than the differential mode gain.
摘要翻译：放大器包括放大单元，其放大第一和第二输入信号之间的第一差值，第二和第三输入信号之间的第二差值以及第三和第一输入信号之间的差分模式增益的第三差值，并放大第一和第二输入信号的平均值通过共模增益输出第二和第三输入信号，用于输出对应于放大的第一差值和放大的平均值的和的第一输出信号，对应于放大的第二差值和放大的平均值之和的第二输出信号，以及对应于放大的第三差和放大的平均值之和的第三输出信号; 第一秒; 以及减小电路，其减小小于差分模式增益的共模增益。

10. 发明申请

US20080064359A1 AMPLIFIER, FILTER USING THE SAME, AND RADIO COMMUNICATION DEVICE 失效
标题翻译：放大器，使用其的滤波器和无线电通信设备
公开(公告)号：US20080064359A1
公开(公告)日：2008-03-13
申请号：US11928766
申请日：2007-10-30
申请人： Takafumi Yamaji , Rui Ito , Tetsuro Itakura
发明人： Takafumi Yamaji , Rui Ito , Tetsuro Itakura
IPC分类号： H04Q7/20 , H03F3/45 , H03K9/00 , H04B1/02 , H04B1/10 , H04L27/00
CPC分类号： H03F3/193 , H03F3/45085 , H03F3/45183 , H03F2203/45352
摘要： An amplifier includes an amplification unit which amplify a first difference between first and second input signals, a second difference between second and third input signals and a third difference between third and first input signals by a differential mode gain, and amplify an average of the first, second and third input signal by a common mode gain, for outputting a first output signal corresponding to a sum of the amplified first difference and the amplified average, a second output signal corresponding to a sum of the amplified second difference and the amplified average, and a third output signal corresponding to a sum of the amplified third difference and amplified average; first, second; and a reduction circuit which reduces the common mode gain less than the differential mode gain.
摘要翻译：放大器包括放大单元，其放大第一和第二输入信号之间的第一差值，第二和第三输入信号之间的第二差值以及第三和第一输入信号之间的差分模式增益的第三差值，并放大第一和第二输入信号的平均值通过共模增益输出第二和第三输入信号，用于输出对应于放大的第一差和放大的平均的和的第一输出信号，对应于放大的第二差和放大的平均之和的第二输出信号，以及对应于放大的第三差和放大的平均值之和的第三输出信号; 第一秒; 以及减小电路，其减小小于差分模式增益的共模增益。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式