METHOD FOR OBTAINING RECIPROCATING DELAY TIME (RTD) FOR RATIO TERMINAL OF WIRELESS NETWORK GLOBAL POSITIONING INTEGRATING (WGP) SYSTEM

    公开(公告)号:JP2002006027A

    公开(公告)日:2002-01-09

    申请号:JP2001121876

    申请日:2001-04-20

    Inventor: DA REN

    Abstract: PROBLEM TO BE SOLVED: To provide a method by which a bias parameter is adaptively adjusted in accordance with a possible change by automatically measuring an RTD parameter (bias) used in a WGP system and continuously improving the quality of estimation. SOLUTION: In this method, the estimated amount of the RTD parameter is obtained by using a radio terminal which can receive superior GPS signals without requiring the setting of a specific system for calibration nor calibration by means of many skilled persons at a job site and a previously obtained parameter stored in a data base is updated by using the estimated RTD parameter. The estimated RTD parameter is used at the time of deciding the position where the ratio terminal is not able to receive the superior GPS signals based on the information obtained from a radio network.

    IMPROVED SIGNAL AMPLIFIER SYSTEM WITH LOW DISTORTION AND METHOD

    公开(公告)号:JP2001358541A

    公开(公告)日:2001-12-26

    申请号:JP2001134949

    申请日:2001-05-02

    Inventor: HOFFMANN SHLOMO

    Abstract: PROBLEM TO BE SOLVED: To improve the coupling of corresponding components by adjusting both or independently one of a relative phase and/or amplitude between signal components and a relative phase and/or amplitude of distortion components. SOLUTION: The signal amplifier system (50) has a first and second amplifier paths (52, 54) for carrying duplicates of signal components. On the first amplifier path, a first amplifier amplifies the signal components to generate distortion components. Duplicates of the amplified signal components and distortion are given to a coupling path (58). On the coupling path, the amplitude and/or phase of the distortion components are/is adjusted without adjusting corresponding to the phase and/or amplitude of the signal components, after canceling the signal components to separate the distortion components. The adjusted distortion components are coupled with a second path where a second amplifier amplifies the signal components and the adjusted distortion components.

    DEVICE AND METHOD FOR IMPROVING BAND WIDTH OF MULTIMODE OPTICAL FIBER

    公开(公告)号:JP2001356233A

    公开(公告)日:2001-12-26

    申请号:JP2001147224

    申请日:2001-05-17

    Abstract: PROBLEM TO BE SOLVED: To provide a device and a method to improve the band width of a multimode optical fiber so as to obtain a multimode optical fiber having improved band width and differential mode delay characteristics. SOLUTION: The embodiment of the invention includes an optical fiber preform (30) and a multimode optical fiber drawn from the preform and showing improved characteristics of the excess initiation band width without decreasing the conventional laser initiation band width characteristics. The optical fiber preform has a core region (34) having refractive index with specified differential mode delay which includes a first part belonging to the lower mode operating similar to the conventional one, and a second part belonging to the upper mode different from conventional operation so as to improve the excess initiation band width in a certain operating window without giving adverse influences on the laser initiation band width characteristics in the same and other operating windows. The structure of the preform optimized for the operation at 850 nm is constituted in such a manner that the differential mode delay specific to the preform a 1300 nm increases at the beginning similar to the conventional one and becomes horizontal with a value of nearly 0 in the upper modes and that the differential mode delay specific to the preform at 850 nm keeps horizontal with a value of nearly 0 similar to the conventional one and decreases in the upper modes.

    METHOD AND DEVICE FOR TRANSMITTING DATA BLOCK FROM SOURCE PROCESSOR TO DESTINATION PROCESSOR IN MULTIPROCESSOR SYSTEM

    公开(公告)号:JP2001325212A

    公开(公告)日:2001-11-22

    申请号:JP2001092257

    申请日:2001-03-28

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for transmitting data blocks between the source processor and destination processor of a multiprocessor system. SOLUTION: An intelligent bus interconnection unit(IBIU) functions as an automatic device, receives an instruction from the source processor by using a control block supplied by the source processor and supplies the instruction to the destination processor. The IBIU receives the information of the data block described by the contents of the relating control block and then sends the data block to the destination processor together with the control block relating to it. The data block is transmitted by using one of the plural levels of priority. The process of transmitting the data block is decomposed into the processes of transmitting a series of sub blocks.

    METHOD, DEVICE AND SYSTEM FOR PROVIDING VARIABLE ENCODING LEVEL

    公开(公告)号:JP2001320334A

    公开(公告)日:2001-11-16

    申请号:JP2001076122

    申请日:2001-03-16

    Inventor: MATHAI STINSON

    Abstract: PROBLEM TO BE SOLVED: To reduce a control message overhead by minimizing deterioration or less, to which traffic channel data, such as sound information, correspond. SOLUTION: When a message is needed to continue a communication session as in a hands-off message, a mobile exchange center includes an instruction for selecting a first encoding level among a plurality of encoding levels, such as a robust 1/4 convolutional code, encoding the message by using the first encoding level and forming an encoded message for transmission. When a message is not needed to continue the communication session like a geo-location message, the mobile exchange center includes instruction for selecting a second encoding level, such as a less robust 1/2 convolutional code among the plurality of the encoding levels, encoding the message by using the second encoding level and forming an encoded message for transmission.

    NETWORK AND PROTOCOL FOR GROUP MULTI-CASTING

    公开(公告)号:JP2001308900A

    公开(公告)日:2001-11-02

    申请号:JP2001097918

    申请日:2001-03-30

    Abstract: PROBLEM TO BE SOLVED: To provide a network where congestion and a delay can be reduced. SOLUTION: A group multi-casting network is provided with ring networks interconnected by a tree network. A ring including multi-cast group members is connected by leaf nodes of a tree via a bridge node. The ring nodes conduct a ring-based multi-cast protocol and the tree nodes conduct a tree-based multi- cast protocol. The bridge node acts as medium between the ring network and the tree network and conducts both the ring-based multi-cast protocol and the tree based multi-cast protocol.

    BUS BAR INCORPORATED TERMINAL BLOCK ASSEMBLY

    公开(公告)号:JP2001307790A

    公开(公告)日:2001-11-02

    申请号:JP2001071398

    申请日:2001-03-14

    Abstract: PROBLEM TO BE SOLVED: To provide a terminal block assembly capable of fixing a number of cable terminals while using a small space and sufficiently robust to endure lever force applied for energizing spring clamps to opening positions. SOLUTION: The terminal block assembly used for receiving the plurality of cable terminals comprises (1) an outer shell having a plurality of openings, (2) a plurality of spring clamps arranged laterally in the outer shell, related to corresponding ones of the plurality of openings and constructed to receive and hold the plurality of cable terminals, and (3) a lever supporting material connected to the outer shell, related to the spring clamps and adapted to support a lever tool opening at least one of the plurality of spring clamps (or clips) for receiving one of the plurality of cable terminals and adapted to work as its fulcrum.

    INTELLIGENT NETWORK TELECOMMUNICATION SYSTEM STRATEGICALLY PREPARING AND ADOPTING SERVICE DEPENDENT PSEUDO CALLING LINE IDENTIFIER(CLI) FOR EXCLUDING DOUBLE CHARGING ERROR

    公开(公告)号:JP2001298556A

    公开(公告)日:2001-10-26

    申请号:JP2001075349

    申请日:2001-03-16

    Inventor: CAI YIGANG

    Abstract: PROBLEM TO BE SOLVED: To prepare and use a service depending pseudo calling line identifier(CLI) for excluding a double charging error. SOLUTION: Double charging to telephone transactions where the collision of charging occurs between an intelligent network(IN) and the other element of a system is avoided by preparing the service depending pseudo calling line identifier(CLI) by a service control point(SCP). When a pseudo CLI retrieving table stored in an SCP database shows (on the basis of a destination number(DN) or a service key(SK)) that a pseudo CLI has to be prepared, the SCP forms a pseudo CLI or forms a new CLI number string by connecting a pre-fix listed in the table to a calling party number(CgPN). When the call is connected to the number (DN), this prepared pseudo CLI is transferred to the number (DN) instead of the original CLI. The pseudo CLI is programmed so that IN deals with the charging of a specific transaction.

Patent Agency Ranking