会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • WIRELESS RECEIVER DEVICE AND DIRECTIVITY CONTROL METHOD
    • 无线接收机设备和方向控制方法
    • US20120224619A1
    • 2012-09-06
    • US13508976
    • 2011-02-17
    • Atsuhiko Hashigaya
    • Atsuhiko Hashigaya
    • H04W40/20H04W40/12H04W24/00
    • H04B7/0834H04J11/0056H04J11/0063H04L27/2647
    • Disclosed is a radio reception apparatus that can prevent deterioration of reception quality, even when a delayed wave having a delay exceeding the length of a guard interval is present in the SFN environment. In this apparatus, OFDM receiver (100) receives a radio signal via a network using a single frequency. Antenna directivity control section (122) forms directivity that is used when receiving a signal. OFDM reception section (120) measures a reception level and reception quality. Transmission station information database (140) stores positional information of a transmission station by associating the information with the transmission station. Determination section (121) selects a transmission station based on the reception level, the reception quality, current positional information of OFDM receiver (100), and the positional information of the transmission station stored in transmission station information database (140), and changes the directivity to be formed by antenna directivity control section (122) per selection.
    • 公开了即使在SFN环境中存在延迟超过保护间隔的长度的延迟波的情况下,也能够防止接收品质恶化的无线接收装置。 在该装置中,OFDM接收机(100)通过使用单个频率的网络接收无线电信号。 天线方向性控制部分(122)形成在接收信号时使用的方向性。 OFDM接收部分(120)测量接收电平和接收质量。 发送站信息数据库(140)通过将信息与发送站相关联来存储发送站的位置信息。 确定部(121)基于接收电平,接收质量,OFDM接收机(100)的当前位置信息和存储在发送站信息数据库(140)中的发送站的位置信息来选择发送站, 每个选择由天线方向性控制部分(122)形成的方向性。
    • 5. 发明授权
    • Base band signal offset correcting circuit for FSK receiving apparatus and method thereof
    • FSK接收装置的基带信号偏移校正电路及其方法
    • US06633752B1
    • 2003-10-14
    • US09585954
    • 2000-06-02
    • Atsuhiko Hashigaya
    • Atsuhiko Hashigaya
    • H04B110
    • H04L27/1563
    • An FSK receiving apparatus has, as means for performing offset correction upon a demodulated base band signal, a second low pass filter 9 for integrating the demodulated base band signal; a window comparator for detecting a DC offset component in an output voltage from the second low pass filter 9; an up/down counter 11 for incrementing or decrementing a count value on the basis of the output of the window comparator 10; a clock generating portion 13 for generating a timing signal for counting operation in the up/down counter 11; a reference voltage generating portion 12 for generating a reference voltage for a comparator 7 on the basis of the output of the up/down counter 11; and a charging circuit 22 for supplying a reference voltage in the last frame to the second low pass filter 9 so as to charge the second low pass filter 9 with the last-frame reference voltage and set an initial value of the second low pass filter 9.
    • FSK接收装置具有用于对解调的基带信号进行偏移校正的装置,用于对解调的基带信号进行积分的第二低通滤波器 9 用于检测来自第二低通滤波器 9 的输出电压中的DC偏移分量的窗口比较器; 用于根据窗口比较器 10 的输出增加或减少计数值的上/下计数器 11 ; 用于产生用于在向上/向下计数器 11 中计数操作的定时信号的时钟产生部分 13 ; 基于上升的输出产生用于比较器 7 的参考电压的参考电压产生部分 12 / down counter 11 ; 以及用于将最后帧中的参考电压提供给第二低通滤波器 9 的充电电路 22 ,以便 用最后一帧参考电压对第二个低通滤波器 9 充电,并设置第二个低通滤波器 9的初始值。
    • 6. 发明授权
    • Radio receiver, radio receiving method, and recording medium
    • 无线电接收机,无线电接收方法和记录介质
    • US07103336B1
    • 2006-09-05
    • US09654274
    • 2000-09-01
    • Yoshinori MiyajimaAtsuhiko Hashigaya
    • Yoshinori MiyajimaAtsuhiko Hashigaya
    • H04B1/06H04L27/08
    • H04B1/1027H03G3/3052H03G2201/103H03G2201/202H03G2201/307H03G2201/706H04B17/318
    • The AGC threshold of electric intensity level is set by the signal processor portion 107 in response to the measured result of the error rate measuring circuit 109 that measures the error rate of the received signal, and the gain control operation of the gain control circuit 106 is caused to start when the electric field intensity detected by the field intensity detector 105 reaches the threshold of electric intensity level. Accordingly, the optimum AGC threshold of electric intensity level can be set to meet the radio wave situation in which the radio receiver, i.e., the receiving situation of the received signal and also the gain control of the gain controlling means can be achieved to optimize the signal quality of the received signal in the situation of either the IM characteristic or the electric field variation characteristic, e.g., under the environment of the strong electric field IM or the environment in which the electric field is changed strongly.
    • 响应于测量接收信号的误码率的误差率测量电路109的测量结果,由信号处理器部分107设置电强度电平的AGC阈值,并且增益控制电路106的增益控制操作是 当由场强检测器105检测到的电场强度达到电强度水平的阈值时开始启动。 因此,可以设置电强度级的最佳AGC阈值以满足无线电接收机的无线电波情况,即接收信号的接收状况,以及增益控制装置的增益控制可以实现, 在IM特性或电场变化特性的情况下,例如在强电场IM的环境或电场强烈变化的环境下,接收信号的信号质量。
    • 7. 发明授权
    • Demodulating circuit of wireless receiving apparatus and demodulating method
    • 无线接收装置的解调电路及解调方法
    • US06597238B1
    • 2003-07-22
    • US09553840
    • 2000-04-21
    • Hidenori MatsumotoAtsuhiko Hashigaya
    • Hidenori MatsumotoAtsuhiko Hashigaya
    • H03D300
    • H03J1/0008H04B17/318
    • A demodulating circuit 1 contains an electric field level detector 2 for detecting an electric field strength from a received modulation signal, comparators 3a to 3n for outputting electric field strength information PS, a detector 5 for outputting a detection signal corresponding to a modulation signal, both a low-pass filter 6 and a digital filter 12 for removing a noise component from the detection signal, and a data comparator 7 for comparing the detection signal with a reference voltage to output a digital signal. This demodulating circuit 1 further includes a control circuit 4 for controlling a cutoff frequency used in a digital filter 12, an output voltage amplitude of the detector 5, and the reference voltage of the data comparator 7 in accordance with both the electric field strength information PS and control condition information PC saved in an EEPROM 11 and supplied from a CPU 10, and also a judging circuit 9 for judging the digital signal at preselected timing to produce a demodulation signal.
    • 解调电路1包含用于从接收到的调制信号中检测电场强度的电场电平检测器2,用于输出电场强度信息PS的比较器3a〜3n,用于输出与调制信号对应的检测信号的检测器5 用于从检测信号中去除噪声分量的低通滤波器6和数字滤波器12,以及用于将检测信号与参考电压进行比较以输出数字信号的数据比较器7。 该解调电路1还包括用于控制数字滤波器12中使用的截止频率的控制电路4,检测器5的输出电压幅度和数据比较器7的参考电压,这两者都是根据电场强度信息PS 以及保存在EEPROM11中并由CPU10提供的控制条件信息PC以及用于以预选定时判断数字信号以产生解调信号的判断电路9。
    • 8. 发明授权
    • Method and an apparatus for automatically tuning a receiver
    • 用于自动调谐接收机的方法和装置
    • US5845200A
    • 1998-12-01
    • US667032
    • 1996-06-19
    • Toru SuzukiAtsuhiko Hashigaya
    • Toru SuzukiAtsuhiko Hashigaya
    • H03J5/02H03J1/00H04B1/18H04B1/16
    • H03J1/0033H04B1/18H03J5/0263
    • An automatic tuning apparatus for a receiver has a tuning unit, a ROM and a voltage converting unit. At the time of adjustment of the tuning unit, tuning voltages are supplied to the tuning unit from a CPU and stored in the ROM as reference tuning voltages at which tunings of the tuning unit become optimum at both ends of a receiving frequency band of the receiver. In a normal use, the reference tuning voltages stored in the ROM are supplied to the voltage converting unit through the CPU. The voltage converting unit converts the reference tuning voltages into a tuning voltage of a desired receiving channel according to a predetermined format, and supplies it to the tuning unit, thereby optimizing a tuning by the tuning unit.
    • 用于接收机的自动调谐装置具有调谐单元,ROM和电压转换单元。 在调谐单元调整时,调谐电压从CPU提供给调谐单元,并作为参考调谐电压存储在调谐单元中,调谐单元的调谐在接收机的接收频带的两端变为最佳状态 。 在正常使用中,存储在ROM中的参考调谐电压通过CPU提供给电压转换单元。 电压转换单元根据预定格式将参考调谐电压转换成所需接收通道的调谐电压,并将其提供给调谐单元,从而优化调谐单元的调谐。