公开(公告)号：US3643031A

公开(公告)日：1972-02-15

申请号：US3643031D

申请日：1969-09-15

申请人： KOKUSAI DENSHIN DENWA CO LTD ,  FUJITSU LTD ,  HIROSHI SASAKI ,  TATSUO MARUYAMA ,  HISAO KANZAKI ,  YASUHIKO SAKAMOTO ,  NOBUYUKI YASOSHIMA

发明人： SASAKI HIROSHI ,  MARUYAMA TATSUO ,  KANZAKI HISAO ,  SAKAMOTO YASUHIKO ,  YASOSHIMA NOBUYUKI

IPC分类号： H04J3/16 ,  H04B7/15 ,  H04B7/212

CPC分类号： H04B7/2123

摘要： A time division multiplexing communication system has a plurality of stations and a switching station. Two of the stations communicate with each other via the switching station by utilizing signals comprising a block having a plurality of words each comprising a plurality of frames which are bursts of a constant time length. Each of the stations comprises channel rearrangement control means for rearranging ground channels to satellite channels and for rearranging satellite channels to ground channels in accordance with informations from an order data channel. Burst synchronism control means connected to the channel rearrangement control means provides the timing of transmission and reception of bursts. Order word controls means connected to the channel rearrangement control means receives command data, provides an order data channel, changes the command data to the format of the order data channel, transmits the format to the other stations and assembles a word from the order data channel information received from the other stations. Command control means is connected to the order word control means, the channel rearrangement control means and the burst synchronism control means and is controlled by a program to discriminate the condition of operation of the channel rearrangement control means, the burst synchronism control means and the order word control means, and supplies thereto command data commanding the means to operate. The order word control means transfers the work assembled from the order data channel received from the other stations to the command control unit when the word is directed to the station. Block synchronism controlling means controls the timing of transmission and reception of the blocks and provides block synchronism for blocks of period TB determined in accordance with the equations nTB > OR = Tl +TP and (n- 1)TB

公开(公告)号：US3644680A

公开(公告)日：1972-02-22

申请号：US3644680D

申请日：1969-09-19

申请人： FUJITSU LTD

发明人： AMANO KITSUTARO ,  OTA CHUICHI ,  HASHIMOTO MASAO ,  KANZAKI HISAO ,  SAKAMOTO YASUHIKO ,  YASOSHIMA NOBUYUKI

IPC分类号： H04J3/17 ,  H04J3/24 ,  H04J5/00

CPC分类号： H04J3/24 ,  H04J3/172

摘要： A TASI system for satellite use is disclosed in which voice signals from the individual trunks are stored prior to being transmitted and in which TASI control data are transmitted in a frame preceding the frame in which associated speech data are transmitted.