专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH07264685A SUBORDINATE SYNCHRONIZATION CONTROL SYSTEM 失效
公开(公告)号：JPH07264685A
公开(公告)日：1995-10-13
申请号：JP4875294
申请日：1994-03-18
申请人： FUJITSU LTD
发明人： UMEZAKI CHIKAKO , UCHIYAMA TSUTOMU , KUROSAWA KAZUMASA , KAI NAOTAKA , KANEKO KENICHI
IPC分类号： H04L7/00 , H04Q11/04
摘要： PURPOSE:To suppress the generation of slip phenomena by selecting the most accurate clock source by a controller based on the subordinate destination information of the clock from a control signal line. CONSTITUTION:A control part 20 switches a switch 11 so that it can select the most accurate clock source based on the subordinate information of the clock from a control signal line 10. That is, the system which is not in synchronism with the master clock does not operate immediately by itself but recognizes the master clock by a control signal being exchanged between systems by using the control signal line and receives the clock signal from a master node 1 or from a slave node 2 of the other system in synchronism with the master clock. Thus, the master clocks from a main station 3 are supplied to each system as much as possible and the clocks can be unified. Thus, the generation of the slip phenomena can be prevented.

2. 发明专利

JPH0955798A ORDER WIRE LINE 失效
公开(公告)号：JPH0955798A
公开(公告)日：1997-02-25
申请号：JP20950895
申请日：1995-08-17
申请人： FUJITSU LTD
发明人： KANEKO KENICHI , UCHIYAMA TSUTOMU , KUROSAWA KAZUMASA , KAI NAOTAKA , MATSUI YUJI
IPC分类号： H04M3/32 , H04B3/46 , H04M3/00
摘要： PROBLEM TO BE SOLVED: To confirm communication normalcy of the order wire line without spending much labor and long time. SOLUTION: A communication line 3 which forms a two-way communication path is provided between a master station 10 and a slave station 20; and the master station is provided with a 1st signal transmitting means 101 which generates a signal for a specific test and transfers it to the slave station through the communication line and the slave station is provided with a 1st signal sending-back means 201 which receives the signal transferred from the master station, inspects if the signal matches the test, and sends the received signal back to the master station through the communication line when matching is detected. Then the master station is provided with a 1st signal detecting means 102 which receives the signal transferred from the slave station, inspects whether it matches the signal for the test transferred by the 1st signal sending means, and decides that normal communication can be made between the master station 10 and slave station 20 through the communication line 3 when detecting both signals matching each other.

3. 发明专利

JPH09205409A NEGOTIATION EQUIPMENT 失效
公开(公告)号：JPH09205409A
公开(公告)日：1997-08-05
申请号：JP1314296
申请日：1996-01-29
申请人： FUJITSU LTD
发明人： KUROSAWA KAZUMASA , KAI NAOTAKA , KANEKO KENICHI , MATSUI YUJI , UCHIYAMA TSUTOMU
IPC分类号： H04J3/08 , H04J3/12
摘要： PROBLEM TO BE SOLVED: To allow an equipment to flexibly cope with an actual negotiation form by separating incoming/outgoing channels assigned as negotiation lines for each transmission block, coding a speech form and a destination and discriminating a reception signal so as to decode the signal or to relay it. SOLUTION: A transmission line interface means 11 separates incoming/outgoing channels assigned as negotiation lines for each transmission block. A reception relay means 15 separates and discriminates a code, a form and a destination received from the incoming channel and when the inputted signal is addressed to its own station, the means 15 allows the received signal to be decoded and a terminal equipment processing means 13 to give a signal to allow the means 13 to provide the output of a speech signal. When the received signal is not addressed to its own station, the means 15 relays the signal to the outgoing channel for a succeeding transmission block via a transmission means 16. A man-machine interface means 12 sets a speech form and a destination, allows a coding means 14 to multiplex own station information onto a code obtained by compressing a speech signal of its own station terminal with a coding means 14 and allows the resulting multiplexed signal to be sent to the outgoing channel. Thus, a specific field assigned under an existing frame configuration is used to conduct required relay processing and the speech processing of its own station.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式