Aromatic polyester, aromatic polyester-amide and processes for producing
the same
    1.
    发明授权
    Aromatic polyester, aromatic polyester-amide and processes for producing the same 失效
    芳香族聚酯,芳香族聚酯酰胺及其制造方法

    公开(公告)号:US5025082A

    公开(公告)日:1991-06-18

    申请号:US395683

    申请日:1989-08-18

    IPC分类号: C08G63/60 C08G69/44

    CPC分类号: C08G63/605 C08G69/44

    摘要: The aromatic polyester and aromatic polyester-amide of the present invention have an excellent heat resistance (soldering resistance) and are excellent in fluidity, and therefore, excellent in moldability, because they show liquid crystallinity in a molten state. In view of mechanical characteristics, the aromatic polyester and aromatic polyester-amide of the present invention have a high modulus of elasticity and are excellent in mechanical strength. In addition, the aromatic polyester and aromatic polyester-amide of the present invention have an advantage that they can be molded at a temperature of 350.degree. C. or below, especially, 320.degree. C. or below.The aromatic polyester and aromatic polyester-amide of the present invention have utility in injection molded articles, films, fibers, etc., due to the above properties thereof.In addition, the aromatic polyester and aromatic polyester-amide of the present invention become molten state at a temperature of 320.degree. C. or below, therefore, the aromatic polyester and aromatic polyester-amide can be drawn out from a reaction vessel by application of pressure or by gravity after completion of polymerization, when the polymer is produced by melt polymerization method. This is another advantage of the present invention.

    Automatic vehicle identification system, interrogator and responder
included in the same
    2.
    发明授权
    Automatic vehicle identification system, interrogator and responder included in the same 失效
    自动车辆识别系统,询问器和响应者包括在同一个

    公开(公告)号:US5533045A

    公开(公告)日:1996-07-02

    申请号:US191690

    申请日:1994-02-04

    IPC分类号: H04B1/707 H04B1/69

    CPC分类号: H04B1/707 H04B2201/70715

    摘要: A mobile unit identifying system comprises: an interrogator having: a spread spectrum signal generation circuit for generating a spread spectrum coding signal using a predetermined pseudo noise signal; and a transmitting antenna for transmitting the spread spectrum coding signal; and a responder having: a memory for storing data; and a modulation unit for modulating radio signals including the transmitted spread spectrum coding signal with the data, the interrogator further comprising: a receiving antenna for receiving the modulated radio signals; and a mixer for mixing the received radio signals with the spread spectrum signal to detect the data. The responder has one or two antennas for receiving or reflecting the spread spectrum coding signal with modulation using a predetermined data. Phase adjusting circuits may be provided in both interrogator and responder to distinguished from reflected waves from reflective objects other than the responder. The responding signal from the responder is distinguished from the reflected waves from the reflective objects through a polarizing transmitting or receiving technique.

    摘要翻译: 移动单元识别系统包括:询问器,具有:扩频信号生成电路,用于使用预定的伪噪声信号产生扩频编码信号; 以及发送天线,用于发送扩频编码信号; 以及响应者具有:用于存储数据的存储器; 以及调制单元,用于利用所述数据调制包括所述发送的扩频编码信号的无线电信号,所述询问器还包括:接收天线,用于接收调制的无线电信号; 以及混合器,用于将接收到的无线电信号与扩展频谱信号混合以检测数据。 应答器具有一个或两个天线,用于使用预定数据进行调制来接收或反射扩频编码信号。 可以在询问器和应答器中提供相位调整电路,以区分来自反应器以外的反射物体的反射波。 来自响应者的响应信号通过偏振发射或接收技术与来自反射物体的反射波不同。

    Mobile unit identifying system and method of demodulating for the same
    3.
    发明授权
    Mobile unit identifying system and method of demodulating for the same 失效
    移动单元识别系统及其解调方法

    公开(公告)号:US5606574A

    公开(公告)日:1997-02-25

    申请号:US305513

    申请日:1994-09-13

    IPC分类号: G01S13/76 G01S13/78 H04B7/26

    摘要: A first mobile unit identification system having a interrogator and responder. The interrogator transmits a given magnitude of a spread spectrum coded signal in standby mode. The responder receives the spread spectrum coded signal and when the magnitude of received signal exceeds a given value, it reflects the transmitted spread spectrum coded signal with ID code when the magnitude of received signal exceeds the given value. The interrogator receives this and then, transmits data to the responder with amplitude modulating the spread spectrum coded signal with the data. The responder detects by amplitude demodulation and stores the detected data. The interrogator may transmit a mode change code. The responder may transmit an end code after transmission of a data train. A second interrogator informs the responder of the standby mode thereof by amplitude-modulated signal having a given cycle. A second responder judges whether or not the second interrogator is in standby mode by detecting the cycle and sends a communication requesting signal Q to the second responder and then, transmits ID code. In response to the signal Q, tile second interrogator transmits a signal having a fixed magnitude. A method of modulating for the mobile unit identifying system is also disclosed.

    摘要翻译: 具有询问器和应答器的第一移动单元识别系统。 询问器在待机模式下发送给定幅度的扩频编码信号。 应答器接收扩频编码信号,当接收信号的幅度超过给定值时,当接收信号的幅度超过给定值时,它反映发射的具有ID码的扩频编码信号。 询问器接收该数据,然后利用数据对扩展频谱编码信号进行幅度调制,向响应者发送数据。 响应者通过幅度解调检测并存储检测到的数据。 询问器可以发送模式改变码。 响应者可以在传输数据列之后发送结束码。 第二询问器通过具有给定周期的幅度调制信号向响应者通知其备用模式。 第二响应者通过检测周期来判断第二询问器是否处于待机模式,并向第二应答器发送通信请求信号Q,然后发送ID码。 响应于信号Q,瓦片第二询问器发送具有固定大小的信号。 还公开了一种调制移动单元识别系统的方法。