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
    • 11. 发明授权
    • Variable equalizer
    • 可变均衡器
    • US4262263A
    • 1981-04-14
    • US036973
    • 1979-05-08
    • Yoshitaka Takasaki
    • Yoshitaka Takasaki
    • H03H7/01H04B3/14H03F3/04H03H5/00
    • H04B3/14H04B3/145
    • A variable equalizer for compensating for the frequency characteristics of transmission media, comprising a plurality of variable circuits which are connected in cascade to an input terminal and which have the same variation characteristics, coefficient circuits which receive input and output signals of the variable circuits as inputs thereof and which multiply the inputs by coefficients, a plurality of impedance circuits which receive as inputs thereof signals with outputs of the coefficient circuits selectively combined and which have frequency-dependencies, and an adder circuit which adds outputs of the impedance circuits to provide an equalized signal as its output. No feedback circuit is required in the construction, and the plurality of variable circuits are constructed of the same circuits. Therefore, a variable equalizer which is capable of high-speed operation, whose circuit arrangement is simple and whose compensation accuracy is high is realized.
    • 一种用于补偿传输介质的频率特性的可变均衡器,包括串联连接到输入端并具有相同变化特性的多个可变电路,接收可变电路的输入和输出信号作为输入的系数电路 并且将输入乘以系数,多个阻抗电路,其接收有选择地组合并且具有频率依赖性的系数电路的输出作为其输入的信号;以及加法器电路,其将所述阻抗电路的输出相加以提供均衡的 信号作为其输出。 该结构中不需要反馈电路,并且多个可变电路由相同的电路构成。 因此,实现了能够高速运行的可变均衡器,其电路布置简单并且其补偿精度高。
    • 16. 发明授权
    • Digital transmission system for multiplexing and demultiplexing signals
    • 用于复用和解复用信号的数字传输系统
    • US5430733A
    • 1995-07-04
    • US452511
    • 1989-12-19
    • Yoshitaka Takasaki
    • Yoshitaka Takasaki
    • H04L25/49H04J3/00
    • H04L25/4908
    • Data transmission and recovery, in either the optical or the electrical domain, can be accomplished with mBnB encoding with the violation of one or more of the n code pulses for multiplexing overhead signals, with a carried clock being indicated by periodic fixed position transitions, and with both extraction of the clock and demultiplexing of the overhead signals being accomplished with only logical processing and signal delay. For the above, transmission and processing in only the optical domain can be easily obtained as well as a circuitry that can be constructed cheaply and on a small scale, particularly by integration on a single substrate. The logical processing involves logical combinations of two or more of the received encoded signal, a delay of the received encoded signal, an output of a previous logical combination, and a delayed output of a previous combination, an extracted clock, and a frequency division or a frequency multiplication of an extracted clock.
    • 在光或电域中的数据传输和恢复可以用mBnB编码来实现,其中违反一个或多个用于复用开销信号的n个码脉冲,携带时钟由周期性固定位置转换指示,以及 同时提取时钟并且只用逻辑处理和信号延迟来完成开销信号的解复用。 对于上述,可以容易地获得仅在光学域中的传输和处理,以及可以廉价且小规模地构建的电路,特别是通过集成在单个基板上。 逻辑处理涉及接收到的编码信号中的两个或更多个,接收到的编码信号的延迟,先前逻辑组合的输出和先前组合的延迟输出,提取的时钟和分频或 提取时钟的倍频。
    • 17. 发明授权
    • Variable equalizer
    • 可变均衡器
    • US4204176A
    • 1980-05-20
    • US893014
    • 1978-04-03
    • Yoshitaka TakasakiYasuhiro KitaJunichi NakagawaKohei Ishizuka
    • Yoshitaka TakasakiYasuhiro KitaJunichi NakagawaKohei Ishizuka
    • H03H7/01H04B3/14H03H7/14
    • H04B3/145
    • A variable equalizer whose frequency characteristic varies in a range of 1-1/Y(f).sup.2when the gain x of a variable amplifier varies from 0 (zero) to .infin. (infinity), and which reduces the number of shaping networks for the variable frequency characteristic.It is constructed of a forward pass circuit which consists of a variable amplifier and a frequency-dependent first circuit connected in the order mentioned between input and output terminals, a feedback pass circuit which is dependent upon the frequency and which feeds-back an output of the variable amplifier to an input thereof, and a feed forward pass circuit which is independent of the frequency and which feeds forward part of the input of the variable amplifier to an output of the first circuit.
    • 当可变放大器的增益x从0(零)到INFINITY(无穷大)变化时,其频率特性在1-1 / Y(f)2的范围内变化的可变均衡器,并且这减少了 可变频率特性。 它由正向电路构成,该正向电路由可变放大器和按照输入和输出端之间的顺序连接的频率依赖的第一电路组成,反馈通道电路取决于频率,并且反馈输出 可变放大器到其输入端,以及前馈传输电路,其独立于频率,并且将可变放大器的输入的前部部分馈送到第一电路的输出。
    • 20. 发明授权
    • Digital signal transmission system
    • 数字信号传输系统
    • US4796281A
    • 1989-01-03
    • US919458
    • 1986-10-16
    • Yoshitaka Takasaki
    • Yoshitaka Takasaki
    • H04J3/06H04J3/07H04L25/05H04N7/52H04L7/00
    • H04L25/05H04J3/073H04N21/234309H04N21/440218
    • A digital signal transmission system which converts first digital signals having a given bit rate into second digital signals having a predetermined bit rate to transmit them. The first digital signals are written into a buffer memory at a bit rate of the first digital signals, and the written signals are read from the first buffer memory at a bit rate of said second digital signals. The reading of the digital signals is carried out with a clock signal which consists of synchronous portions that read the written signals at any time and asynchronous portions that read the written signals depending upon the condition of the written signals. The second digital signals are sent after adding a data signal to the asynchronous portions of the digital signals. A second buffer memory receives the sent second digital signals and temporarily stores them by writing the second digital signals at the bit rate of said second digital signals, and reading the written signals from the second buffer memory at a bit rate of the third digital signals, the reading of the third digital signals depending upon signals of the asynchronous portions of the second digital signals.
    • 一种数字信号传输系统,其将具有给定比特率的第一数字信号转换成具有预定比特率的第二数字信号以发送它们。 第一数字信号以第一数字信号的比特率写入缓冲存储器,并且以所述第二数字信号的比特率从第一缓冲存储器读取写入的信号。 数字信号的读取由时钟信号执行,该时钟信号由随时读取写入信号的同步部分和根据写入信号的条件读取写入信号的异步部分组成。 在将数据信号添加到数字信号的异步部分之后发送第二数字信号。 第二缓冲存储器接收所发送的第二数字信号,并通过以所述第二数字信号的比特率写入第二数字信号来临时存储它们,并以第三数字信号的比特率从第二缓冲存储器读取写入的信号, 根据第二数字信号的异步部分的信号读取第三数字信号。