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    • 11. 发明授权
    • Method and apparatus for converting a digital signal
    • 用于转换数字信号的方法和装置
    • US4598267A
    • 1986-07-01
    • US604017
    • 1984-04-26
    • Shinichi Fukuda
    • Shinichi Fukuda
    • H03M5/06G11B20/14H03M7/14H04L25/49H03M7/20
    • G11B20/1426
    • A converted digital signal is provided in NRZI code with a DC component of zero and with a maximum of four bits between level transitions in the signal by dividing the base digital signal into eight-bit base words, each of which is then converted into a ten-bit word signal that has 1024 (2.sup.10) possible combinations, of which there are 193 that begin with no more than two digital zeros, end with no more than one digital zero, have no more than three consecutive digital zeros anywhere else, and have a DC component of zero when NRZI coded, and each of which is used to represent one eight-bit base word. Each of the remaining 63 of the total 256 (2.sup.8) base words is converted into a secondary ten-bit combination having a "convention" DC component of +2 or -2. The number of level transitions in the converted, NRZI-coded digital signal are detected up to the end of the ten-bit combination immediately preceding the next secondary combination and, depending on the number of level changes, the first bit of the next secondary combination is provided to give it a convention DC component, thereby eliminating the DC component in that portion of the signal.
    • 转换的数字信号以NRZI码提供,其中DC分量为零,并且通过将基本数字信号分成八位的基本字,将其分别转换成十位 具有1024(210)个可能组合的位字字信号,其中193个以不超过两个数字零开始,以不超过一个数字零结束,其他任何地方不得超过三个连续数字零,并具有 当NRZI编码时,DC分量为零,并且每个分量用于表示一个八位的基本字。 总共256(28)个基本字中的剩余63个中的每一个被转换为具有+2或-2的“约定”DC分量的辅助十位组合。 转换的NRZI编码的数字信号中的电平转换的数量被检测到直到紧接在下一个次级组合之前的十位组合的结尾,并且根据电平变化的数量,下一个次级组合的第一位 提供给它一个常规的DC分量,从而消除信号的该部分中的DC分量。
    • 12. 发明授权
    • Method and apparatus for recording and reproducing an analog signal
    • 用于记录和再现模拟信号的方法和装置
    • US4523237A
    • 1985-06-11
    • US485065
    • 1983-04-14
    • Shinichi FukudaKentaro Odaka
    • Shinichi FukudaKentaro Odaka
    • G11B20/12G11B5/09G11B20/18G11B5/60
    • G11B20/1813G11B20/1809
    • For recording an analog signal by means of two recording heads equally spaced on a rotating drum, a magnetic tape is wrapped guide drum with an angular range of 90.degree., so that there are recording periods when a head is tracing the tape and free periods when neither head is tracing the tape. The analog signal to be recorded is converted to pulse code modulated (PCM) signals having real time periods longer than the recording periods. The free periods, during which neither head is in contact with the recording medium, are used to add redundant data such as parity data and a cyclic redundancy check (CRC) code to the PCM signals. The composite signal, which represents a PCM signal having the parity data and CRC code added to it, is time-base compressed to a period substantially equal to the recording periods and is recorded on the recording medium by one of the heads during its recording period. To reproduce the signal, the same head arrangement is used. The free periods are used for error correction and the error-corrected signal is time-base expanded to occupy the original or real time signal period and then reconverted into the corresponding analog signal.
    • 为了通过在旋转鼓上等距分布的两个记录头记录模拟信号,磁带是包围导向滚筒,角度范围为90°,这样当磁头跟踪磁带和自由周期时,会有记录周期 磁头都没有跟踪。 要记录的模拟信号被转换为具有比记录周期长的实时周期的脉冲编码调制(PCM)信号。 使用头部与记录介质接触的空闲时段用于向PCM信号添加诸如奇偶校验数据和循环冗余校验(CRC)码的冗余数据。 表示具有相加奇偶校验数据和CRC码的PCM信号的复合信号被时基压缩到基本上等于记录周期的周期,并且在其记录周期期间由其中一个磁头记录在记录介质上 。 为了再现信号,使用相同的头部布置。 空闲周期用于纠错,误差校正信号被时基扩展,占据原始或实时信号周期,然后再转换为相应的模拟信号。
    • 13. 发明授权
    • Process for producing powdery polycarbonate from a polycarbonate solution
    • 从聚碳酸酯溶液制备粉状聚碳酸酯的方法
    • US4184911A
    • 1980-01-22
    • US913315
    • 1978-06-07
    • Hiroyuki KodaKunio HamayaHiroyuki YoshizakiYutaka KojimaShiro TsuchiyaShinichi FukudaTakashi Ikeno
    • Hiroyuki KodaKunio HamayaHiroyuki YoshizakiYutaka KojimaShiro TsuchiyaShinichi FukudaTakashi Ikeno
    • C08J3/14B01D1/24
    • C08J3/14C08J2369/00Y10S159/10
    • A process is disclosed for producing powdery polycarbonate from a polycarbonate solution which comprises:(a) charging the solution into the feed opening of a disolvating apparatus, the apparatus being composed of a casing and having at least two screws incorporated therein, the screws meshing with each other; the apparatus comprising two parts; a evaporating zone and a powdering zone; a space being provided above the screws in the evaporating zone, the space extending in the axial direction of the screws and having at least one degassing opening, and side and bottom portions of screws generally fitting with the casing in the evaporating zone; top, side and bottom portions of screws generally fitting with the casing in the powdering zone, heating means being installed in the casing and/or screws;(b) in the evaporating zone, evaporating the solvent of the polycarbonate solution using the heating means while moving the solution by the screws;(c) powdering the dried polycarbonate in the powdering zone; and(d) discharging the powdery polycarbonate from the product exit in the powdering zone.
    • 公开了一种从聚碳酸酯溶液制备粉状聚碳酸酯的方法,该方法包括:(a)将溶液装入分散装置的进料口中,该装置由壳体组成,其中并入有至少两个螺杆,螺钉与 彼此; 该装置包括两部分; 蒸发区和粉化区; 在蒸发区域的螺钉上方设置空间,该空间沿螺杆的轴向方向延伸,并且具有至少一个脱气开口,以及通常与壳体配合在蒸发区域中的螺钉的侧部和底部; 螺丝的顶部,侧面和底部通常与壳体配合在粉化区域中,加热装置安装在壳体和/或螺钉中; (b)在蒸发区内,用螺丝移动溶液时,使用加热装置蒸发聚碳酸酯溶液的溶剂; (c)将干燥的聚碳酸酯粉化在粉化区中; 和(d)从粉状区域中的产品出口排出粉末状聚碳酸酯。
    • 15. 发明授权
    • Signal processing device, signal processing method, and receiving device
    • 信号处理装置,信号处理方法和接收装置
    • US09571210B2
    • 2017-02-14
    • US13985442
    • 2012-02-14
    • Shinichi FukudaHiroaki Nakano
    • Shinichi FukudaHiroaki Nakano
    • H04L27/02H04B17/00H04B5/00H04B5/02H03D1/10
    • H04B17/21H03D1/10H04B5/0031H04B5/0081H04B5/02
    • This disclosure relates to a signal processing device, a signal processing method, and a receiving device that are capable of detecting response information at a high degree of accuracy from a carrier signal that is load-modulated based on the response information. A positive DC generating unit 61 generates a positive threshold based on a load-modulated carrier signal. A positive selecting unit 62 compares the voltage of the carrier signal with the positive threshold, and outputs the value of the larger one to an adding unit 65. A negative DC generating unit 63 generates a negative threshold based on the load-modulated carrier signal. A negative selecting unit 64 compares the voltage of the carrier signal with the negative threshold, and outputs the value of the smaller one to the adding unit 65. The adding unit 65 adds the output of the positive selecting unit 62 and the output of the negative selecting unit 64, and outputs the addition result to an IQ detecting unit 53. As a result of the combining, a signal that has smaller Vpp than that of the original carrier signal and maintains the fluctuation portions of the voltage is obtained. This disclosure can be applied to non-contact communication systems.
    • 本公开涉及一种信号处理装置,信号处理方法和接收装置,其能够基于响应信息从负载调制的载波信号以高精度检测响应信息。 正直流产生单元61基于负载调制载波信号产生正阈值。 正选择单元62将载波信号的电压与正阈值进行比较,并将较大值的值输出到加法单元65.负DC产生单元63基于负载调制载波信号产生负阈值。 负选择单元64将载波信号的电压与负阈值进行比较,并将较小的值的值输出到加法单元65.加法单元65将正选择单元62的输出和负选择单元62的输出相加 选择单元64,并将相加结果输出到IQ检测单元53.作为组合的结果,获得具有比原始载波信号更小的Vpp的信号并且保持电压的波动部分。 本公开可应用于非接触式通信系统。
    • 16. 发明申请
    • SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND RECEIVING DEVICE
    • 信号处理装置,信号处理方法和接收装置
    • US20130316655A1
    • 2013-11-28
    • US13985442
    • 2012-02-14
    • Shinichi FukudaHiroaki Nakano
    • Shinichi FukudaHiroaki Nakano
    • H04B17/00
    • H04B17/21H03D1/10H04B5/0031H04B5/0081H04B5/02
    • This disclosure relates to a signal processing device, a signal processing method, and a receiving device that are capable of detecting response information at a high degree of accuracy from a carrier signal that is load-modulated based on the response information. A positive DC generating unit 61 generates a positive threshold based on a load-modulated carrier signal. A positive selecting unit 62 compares the voltage of the carrier signal with the positive threshold, and outputs the value of the larger one to an adding unit 65. A negative DC generating unit 63 generates a negative threshold based on the load-modulated carrier signal. A negative selecting unit 64 compares the voltage of the carrier signal with the negative threshold, and outputs the value of the smaller one to the adding unit 65. The adding unit 65 adds the output of the positive selecting unit 62 and the output of the negative selecting unit 64, and outputs the addition result to an IQ detecting unit 53. As a result of the combining, a signal that has smaller Vpp than that of the original carrier signal and maintains the fluctuation portions of the voltage is obtained. This disclosure can be applied to non-contact communication systems.
    • 本公开涉及一种信号处理装置,信号处理方法和接收装置,其能够基于响应信息从负载调制的载波信号以高精度检测响应信息。 正直流产生单元61基于负载调制载波信号产生正阈值。 正选择单元62将载波信号的电压与正阈值进行比较,并将较大值的值输出到加法单元65.负DC产生单元63基于负载调制载波信号产生负阈值。 负选择单元64将载波信号的电压与负阈值进行比较,并将较小的值的值输出到加法单元65.加法单元65将正选择单元62的输出和负选择单元62的输出相加 选择单元64,并将相加结果输出到IQ检测单元53.作为组合的结果,获得具有比原始载波信号更小的Vpp的信号并且保持电压的波动部分。 本公开可应用于非接触式通信系统。
    • 17. 发明申请
    • INFORMATION PROCESSING DEVICE AND RECEIVING METHOD
    • 信息处理设备和接收方法
    • US20110291811A1
    • 2011-12-01
    • US13113565
    • 2011-05-23
    • Hiroaki NakanoShinichi FukudaKenichi Kabasawa
    • Hiroaki NakanoShinichi FukudaKenichi Kabasawa
    • H04Q5/22
    • H04B5/02H04B5/0093H04L27/08
    • A receiving method includes the steps of: performing contactless communication using a wireless antenna and electromagnetic coupling, subjecting a signal received by the wireless antenna in the communication step to IQ detection, subjecting the signal received by the wireless antenna in the communication step to ASK detection, firstly automatically controlling a gain for the signal subjected to the IQ detection in the IQ detection step, secondly automatically controlling a gain for the signal subjected to the ASK detection in the ASK detection step, performing predetermined demodulation processing on an output of the first AGC step or second AGC step, and receiving information of control voltage levels in the first AGC step and the second AGC step and controlling supply of one of the outputs of the first and second AGC steps to the demodulation step by switching between the outputs of the first and second AGC steps.
    • 接收方法包括以下步骤:使用无线天线和电磁耦合执行非接触式通信,在通信步骤中对由无线天线接收的信号进行IQ检测,在通信步骤中对由无线天线接收的信号进行ASK检测 首先在IQ检测步骤中自动控制经过IQ检测的信号的增益,其次在ASK检测步骤中自动控制经受ASK检测的信号的增益,对第一AGC的输出执行预定的解调处理 步骤或第二AGC步骤,以及在第一AGC步骤和第二AGC步骤中接收控制电压电平的信息,并且通过在第一和第二AGC步骤的输出之间切换来控制将第一和第二AGC步骤的输出之一提供给解调步骤 和第二AGC步骤。
    • 19. 发明申请
    • COMMUNICATION DEVICE, COMMUNICATION METHOD, COMPUTER PROGRAM AND COMPUTER SYSTEM
    • 通信设备,通信方法,计算机程序和计算机系统
    • US20100079261A1
    • 2010-04-01
    • US12629482
    • 2009-12-02
    • Tetsuro GotoShinichi FukudaNorihito MihotaMasatoshi Ueno
    • Tetsuro GotoShinichi FukudaNorihito MihotaMasatoshi Ueno
    • H04Q5/22
    • H04B5/0075
    • A communication device includes: a first communication processing unit performing contactless communication operations in a first communication rate in which waveform distortion hardly become a problem; a second communication processing unit performing contactless communication operations in a second communication rate in which waveform shaping by adaptive equalization is necessary; and a control unit controlling communication processing by the first and second communication processing units, wherein the first communication processing unit stores the contents of a packet received in the first communication rate, and the second communication processing unit, when receiving the packet of the same contents in the second communication rate, performs adaptive equalization processing by using the stored contents of the packet.
    • 通信设备包括:第一通信处理单元,其以波形失真几乎不成问题的第一通信速率执行非接触通信操作; 第二通信处理单元,其以需要通过自适应均衡的波形整形的第二通信速率进行非接触通信操作; 以及控制单元,其控制由所述第一和第二通信处理单元进行通信处理的控制单元,其中,当接收到相同内容的分组时,所述第一通信处理单元以第一通信速率接收的分组的内容和所述第二通信处理单元 在第二通信速率中,通过使用存储的分组的内容来执行自适应均衡处理。