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    • 1. 发明申请
    • PULSE TRANSMITTING DEVICE, PULSE RECEIVING DEVICE, PULSE COMMUNICATION SYSTEM, AND PULSE COMMUNICATION METHOD
    • 脉冲发射装置,脉冲接收装置,脉冲通信系统和脉冲通信方法
    • US20100020864A1
    • 2010-01-28
    • US12374994
    • 2007-07-12
    • Michiaki MatsuoHitoshi AsanoHideki AoyagiKazuaki TakahashiYew Soo Eng
    • Michiaki MatsuoHitoshi AsanoHideki AoyagiKazuaki TakahashiYew Soo Eng
    • H03K7/04H04L27/06
    • H04L25/4906H04B1/7172H04B1/719H04L25/4902
    • A pulse transmitting device is provided to avoid interference between pulses due to multipath influence even in a high speed pulse transmission that is typical of a UWB by making use of a relatively simple method and to improve receiving quality. In the device, a pulse adjusting unit (110) generates pulses in response to transmitting data, a non-use interval setting unit (120) sets up a non-use interval where the pulses generated by the pulse adjusting unit (110) are not transmitted on the basis of a delay time that a delayed pulse caused by the multipath delays from a main pulse and takes until arriving at a communication partner. A pulse position adjusting unit (130) adjusts a pulse position not to transmit the pulses during the non-use pulse interval. An RF transmitting unit (140) converts the pulse, the position of which is adjusted by the pulse position adjusting unit, to a wireless frequency band and transmits a pulse wireless signal after the conversion to the communication partner.
    • 提供脉冲发送装置,即使在UWB的典型的高速脉冲传输中,通过利用相对简单的方法并且提高接收质量,也可以避免由于多路径影响引起的脉冲之间的干扰。 在该装置中,脉冲调整单元(110)响应于发送数据产生脉冲,不使用间隔设定单元(120)设定由脉冲调整单元(110)生成的脉冲不是的非使用间隔 基于由主脉冲的多径延迟引起的延迟脉冲的延迟时间发送,并且直到到达通信伙伴。 脉冲位置调整单元(130)调整在不使用脉冲间隔期间不发送脉冲的脉冲位置。 RF发送单元(140)将其位置由脉冲位置调整单元调整的脉冲转换为无线频带,并且在转换到通信对方之后发送脉冲无线信号。
    • 4. 发明授权
    • Imaging apparatus of electronic endoscope and electronic endoscope
    • 电子内窥镜和电子内窥镜成像设备
    • US08462202B2
    • 2013-06-11
    • US12042838
    • 2008-03-05
    • Kazuaki Takahashi
    • Kazuaki Takahashi
    • H04N13/00A61B1/04
    • A61B1/05A61B1/042A61B1/051A61B1/128
    • An imaging apparatus is provided and includes: a solid-state imaging device that receives image light of an observed portion inside of a coelom to output an imaging signal of the image light; a cover glass disposed above an light receiving surface of the solid-state imaging device so that the cover glass and the solid-state imaging device are separated with a space; and a first circuit board disposed at a vicinity of an upper surface of the cover glass and including a peripheral circuit of the solid-state imaging device, the first circuit board having a thermal conductivity lower than that of a reference circuit board whose major component is alumina, the imaging apparatus being included in a front end of an electronic endoscope.
    • 提供了一种成像装置,包括:固态成像装置,其接收体内的观察部分的图像光,以输出图像光的成像信号; 设置在所述固态成像装置的光接收表面上方的盖玻璃,使得所述盖玻璃和所述固态成像装置以空间分开; 以及布置在所述盖玻璃的上表面附近并且包括所述固态成像装置的外围电路的第一电路板,所述第一电路板的导热率低于其主要成分为 氧化铝,成像装置包括在电子内窥镜的前端中。
    • 6. 发明申请
    • UWB TRANSMISSION APPARATUS AND UWB TRANSMISSION METHOD
    • UWB传输设备和UWB传输方法
    • US20100166037A1
    • 2010-07-01
    • US12377113
    • 2007-10-10
    • Lei Soo HuangPing LuoSuguru FujitaKazuaki Takahashi
    • Lei Soo HuangPing LuoSuguru FujitaKazuaki Takahashi
    • H04B1/69
    • H04L27/0008H04B1/7176H04L27/02H04L27/18
    • A UWB transmission apparatus that, in a system using a mixture of amplitude and phase modulation schemes, can support both of the amplitude and phase modulation schemes, while preventing the signal powers of amplitude-modulated signals from degrading. In this UWB transmission apparatus, if the modulation mode is of QPSK, a mapping part (121) selects one of four signal points on the IQ plane in accordance with a 2-bit data, and outputs information related to the I- and Q-components of the selected signal point to a QPSK/ASK modulated signal forming part (122). If the modulation mode is of ASK, the mapping part (121) selects the origin point on the IQ plane when the data being ‘0’ and selects one of four signal points on the IQ plane, similarly to the case of QPSK modulation, when the data being ‘1,’ and outputs information, which is related to the selected signal point, to the QPSK/ASK modulated signal forming part (122).
    • 一种UWB传输装置,其在使用幅度和相位调制方案的混合的系统中可以支持幅度和相位调制方案两者,同时防止幅度调制信号的信号功率降级。 在该UWB发送装置中,如果调制模式为QPSK,则映射部(121)根据2比特数据选择IQ平面上的四个信号点中的一个,并且输出与I和Q- 所选信号的分量指向QPSK / ASK调制信号形成部分(122)。 如果调制方式为ASK,映射部分(121)在数据为“0”时选择IQ平面上的原点,并选择IQ平面上的四个信号点中的一个,类似于QPSK调制的情况,当 数据为“1”,并将与所选信号点相关的信息输出到QPSK / ASK调制信号形成部分(122)。
    • 7. 发明授权
    • Reception device, transmission device, and radio system
    • 接收设备,传输设备和无线电系统
    • US07706452B2
    • 2010-04-27
    • US10599378
    • 2005-03-15
    • Suguru FujitaKazuaki TakahashiMasahiro Mimura
    • Suguru FujitaKazuaki TakahashiMasahiro Mimura
    • H04L27/00
    • H04B1/7174G01S13/931H04B1/71632H04B1/71637H04B1/719
    • A transmitter using a plurality of pulse signals having different pulse sequence times, a receiver for steadily demodulating pulse signals of only desirable wave, and a wireless system are disclosed. In the transmitter, a control signal generating circuit outputs a control signal for generating a plurality of pulse signals having different pulse sequence generating times, a pulse generating circuit generates a plurality of pulse signals by using the control signal. In the receiver, reception front end receives the plurality of pulse signals having different pulse sequence generating times, delay circuit delays at least one of reception front-end output signals supplied from the reception front-end by a given time, delay pulse composition circuit combines delay signal with reception front-end output signal, so that the receiver steadily demodulates the pulse signals of only the desirable wave.
    • 公开了使用具有不同脉冲序列时间的多个脉冲信号的发射机,用于稳定地解调仅期望波的脉冲信号的接收机和无线系统。 在发送器中,控制信号发生电路输出用于产生具有不同脉冲序列产生时间的多个脉冲信号的控制信号,脉冲发生电路通过使用控制信号产生多个脉冲信号。 在接收机中,接收前端接收具有不同脉冲序列产生时间的多个脉冲信号,延迟电路将从接收前端提供的接收前端输出信号中的至少一个延迟给定时间,延迟脉冲合成电路组合 具有接收前端输出信号的延迟信号,使得接收机稳定地解调仅需要的波的脉冲信号。
    • 10. 发明申请
    • IMPULSE WAVEFORM GENERATING APPARATUS AND RADIO-FREQUENCY PULSE WAVEFORM GENERATING APPARATUS
    • 脉冲波形发生装置和无线电频率波形波形发生装置
    • US20090135974A1
    • 2009-05-28
    • US11909910
    • 2006-03-29
    • Masahiro MimuraKazuaki TakahashiSuguru Fujita
    • Masahiro MimuraKazuaki TakahashiSuguru Fujita
    • H04L7/00
    • H03K7/02
    • An impulse waveform generating apparatus includes a multistage delay pulse signal generating part for generating a plurality of delay pulse signals by a timing signal; a signal source signal generating part for generating a signal source signal indicating the frequency component of an impulse waveform signal by the delay pulse signals; an envelope formation signal generating part for generating an envelope formation signal indicating the amplitude component of the impulse waveform signal by the delay pulse signals; and a mixer part for multiplying the signal source signal by the envelope formation signal to generate a prescribed impulse waveform signal. The impulse waveform generating apparatus generates the impulse waveform signal from the timing signal. Therefore, the circuit arrangement requires no digital-to-analog converter, the operational frequency of each element can be reduced, and the power consumption can be reduced.
    • 脉冲波形发生装置包括:多级延迟脉冲信号产生部分,用于通过定时信号产生多个延迟脉冲信号; 信号源信号产生部分,用于通过延迟脉冲信号产生指示脉冲波形信号的频率分量的信号源信号; 信封形成信号产生部分,用于通过延迟脉冲信号产生指示脉冲波形信号的振幅分量的包络信号; 以及混合器部分,用于将信号源信号乘以包络形成信号以产生规定的脉冲波形信号。 脉冲波形生成装置根据定时信号生成脉冲波形信号。 因此,该电路装置不需要数模转换器,可以降低各元件的工作频率,能够降低功耗。