公开(公告)号：US20050054337A1

公开(公告)日：2005-03-10

申请号：US10697755

申请日：2003-10-30

申请人： Hideaki Nobusawa ,  Susumu Nonaka

发明人： Hideaki Nobusawa ,  Susumu Nonaka

IPC分类号： H04B1/20 ,  H04M1/00 ,  H04M1/725 ,  H04M11/00 ,  H04N5/00 ,  H04Q9/00 ,  H04W84/10 ,  H04W88/02 ,  H04W92/08 ,  H04M3/00

CPC分类号： H04M1/72533 ,  G08C2201/93 ,  H04B1/202

摘要： To obtain a mobile telephone with remote-controlling capability easily available as a remote-controller. Various remote control codes for predetermined various controlling operations on target equipment are associated with a plurality of operation buttons of an operation unit of a mobile telephone in a one-to-one relationship, and stored in memory of the mobile telephone. When an operation button is depressed, a control unit of the mobile telephone reads a remote control code associated with the depressed button from the memory, and transmits it to the target equipment using an infrared emission unit.

摘要翻译： 获得具有远程控制能力的手机，作为遥控器轻松获得。 用于目标设备上的预定各种控制操作的各种遥控代码以一对一关系与移动电话的操作单元的多个操作按钮相关联，并存储在移动电话的存储器中。 当按下操作按钮时，移动电话的控制单元从存储器读取与按下的按钮相关联的遥控代码，并使用红外发射单元将其发送到目标设备。

公开(公告)号：US5193211A

公开(公告)日：1993-03-09

申请号：US737546

申请日：1991-07-30

申请人： Hideaki Nobusawa

发明人： Hideaki Nobusawa

IPC分类号： G05F1/10 ,  G08B3/10 ,  H02M3/155 ,  H02M3/156

CPC分类号： G08B3/1066 ,  H02M3/156

摘要： In a radio pager, the front end of the pager is powered by a battery. A decoder processes an incoming signal received by the front end and generates a first or a second signal when it is in an active state or an inactive state, respectively. A high duty-ratio pulse signal or a low duty-ratio pulse signal is generated in response to the first and second signals from the decoder, respectively. A voltage inducing circuit is connected across the terminals of the battery to respond to the high duty-ratio and low duty-ratio pulse signals by allowing a current to periodically pass through an inductor for a varying duration proportional to the duty ratio of either of the pulse signals to cause a voltage higher than the battery voltage to be induced in the inductor. A capacitor coupled to the inductor stores DC energy proportional to the duration of the current and supplies power to the decoder. A power savings circuit is provided for comparing the voltage developed in the capacitor with a reference voltage for ceasing the voltage in the capacitor to increase when it is higher than the reference voltage.

公开(公告)号：US5390357A

公开(公告)日：1995-02-14

申请号：US936317

申请日：1992-08-28

申请人： Hideaki Nobusawa ,  Hideaki Tashiro

发明人： Hideaki Nobusawa ,  Hideaki Tashiro

IPC分类号： H04B7/08

CPC分类号： H04B7/0808

摘要： In a diversity receiver, each of first and second diversity branches includes an antenna and a high-frequency amplifier coupled thereto. A diversity decision circuit is coupled to the outputs of the amplifiers to generate a switching control signal identifying one of the outputs of the diversity branches having a higher field intensity value. A power switching circuit is provided for coupling a voltage source to one of the amplifiers according to the switching control signal so that power supply to the other amplifier is cut off.

摘要翻译： 在分集接收机中，第一分集分支和第二分集分支中的每一个包括天线和耦合到其的高频放大器。 分集判决电路耦合到放大器的输出端以产生识别具有较高场强值的分集支路的输出之一的开关控制信号。 提供电源开关电路，用于根据开关控制信号将电压源耦合到一个放大器，从而切断对另一放大器的电源。

公开(公告)号：US06205217B1

公开(公告)日：2001-03-20

申请号：US09087212

申请日：1998-05-29

申请人： Hideaki Nobusawa

发明人： Hideaki Nobusawa

IPC分类号： H04M1100

CPC分类号： H03G3/32 ,  H04M1/60 ,  H04M1/725

摘要： A portable telephone set includes a demodulating circuit which demodulates a signal from a base station to output a demodulated signal. A first signal processing unit amplifies the demodulated signal to output a first amplified signal. An earphone converts the first amplified signal into a sound. A microphone converts a sound into a signal. A second signal processing unit amplifies the signal from the microphone to output a second amplified signal. A modulating circuit modulates the second amplified signal to output a modulated signal. A volume control unit increases the amplification degrees of the signal processing units in accordance with the user's selection. A band limiting circuit limits to the voice band the sound input through the microphone. An S/N determining circuit compares the level of the signal from the microphone and the level of a signal from the band limiting circuit. The volume control unit is rendered inoperative if the S/N determining circuit judges that the ratio of the level of the signal from the microphone to the level of the signal from the band limiting circuit has exceeded a predetermined range during the operation of the volume control unit.

摘要翻译： 一种便携式电话机包括解调电路，其解调来自基站的信号以输出解调信号。 第一信号处理单元放大解调信号以输出第一放大信号。 耳机将第一放大信号转换成声音。 麦克风将声音转换为信号。 第二信号处理单元放大来自麦克风的信号以输出第二放大信号。 调制电路调制第二放大信号以输出调制信号。 音量控制单元根据用户的选择增加信号处理单元的放大度。 频带限制电路通过麦克风限制声音输入的声音带。 S / N确定电路比较来自麦克风的信号的电平和来自频带限制电路的信号的电平。 如果S / N确定电路判断在音量控制的操作期间来自麦克风的信号的电平与来自频带限制电路的信号的电平的比例已经超过预定范围，则音量控制单元不工作 单元。

公开(公告)号：US06088410A

公开(公告)日：2000-07-11

申请号：US81631

申请日：1998-05-20

申请人： Hideaki Nobusawa

发明人： Hideaki Nobusawa

IPC分类号： H04L7/00 ,  H04L7/033 ,  H04L27/22

CPC分类号： H04L7/0331 ,  H04L27/22

摘要： A false-synchronization detection device comprises an up-down counter which counts down a predetermined amount of clocks when codes of phase changes at former and latter halves of a symbol interval are different, and counts up a different predetermined amount of clocks, which is less than the previous one, when codes of phase changes at former and latter halves of the symbol interval are the same. Thus, the false-synchronization detection device is capable of recognizing false-synchronization of symbol timing when the count value falls as far as the predetermined value.

摘要翻译： 假同步检测装置包括：递增计数器，其在符号间隔的前后半部的相位变化量不同时向下计数预定量的时钟，并且计数不同的预定量的时钟，这是较少的 与之前的情况相比，当符号间隔的前后半部的相位变化代码相同时。 因此，当计数值下降到预定值时，假同步检测装置能够识别符号定时的假同步。

公开(公告)号：US6029055A

公开(公告)日：2000-02-22

申请号：US965671

申请日：1997-11-06

申请人： Hideaki Nobusawa

发明人： Hideaki Nobusawa

IPC分类号： G01R23/15 ,  H03J7/06 ,  H03L7/14 ,  H04B1/26 ,  H04B1/06

CPC分类号： H03J7/065 ,  H03L7/148

摘要： A frequency stabilization circuit includes a local oscillator, a mixer, a level comparator, a frequency comparator, and a controller. The local oscillator outputs a local oscillation signal in accordance with a control voltage. The mixer converts a received radio frequency signal into an intermediate frequency signal using the local oscillation signal from the local oscillator. The level comparator compares a DC voltage corresponding to the intermediate frequency signal from the mixer with a reference voltage to determine whether the reception electric field level of the radio frequency signal is high or low. The frequency comparator compares the frequency of the intermediate frequency signal from the mixer with the frequency of the reference signal to output frequency difference information. The frequency comparator outputs previous frequency difference information when the comparison result of the level comparator indicates a decrease in reception electric field level. The controller outputs the control voltage to the local oscillator in accordance with the frequency difference information from the frequency comparator.

摘要翻译： 频率稳定电路包括本地振荡器，混频器，电平比较器，频率比较器和控制器。 本地振荡器根据控制电压输出本地振荡信号。 混频器使用来自本地振荡器的本地振荡信号将接收的射频信号转换成中频信号。 电平比较器将来自混频器的与中频信号相对应的DC电压与参考电压进行比较，以确定射频信号的接收电场电平是高还是低。 频率比较器将来自混频器的中频信号的频率与参考信号的频率与输出频率差信息进行比较。 当电平比较器的比较结果指示接收电场电平降低时，频率比较器输出先前的频率差信息。 控制器根据来自频率比较器的频率差异信息将控制电压输出到本地振荡器。