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    • 1. 发明申请
    • TERRESTRIAL COMMUNICATION SYSTEM
    • 地缘通信系统
    • WO9825411A8
    • 1999-10-21
    • PCT/SE9702012
    • 1997-12-01
    • WELLTON PERSSON CLAES LORENTZSVENSSON HANS ERIKBJURFJELL EDVARD
    • BJURFJELL EDVARD
    • H04N7/173H04B7/155H04N7/20
    • H04N7/20
    • A terrestrial communication system, facilitating audio, video, data and any other type of communication within a local geographical area, and with an extremely large number of communication channels being made available simultaneously at a very low cost. It comprises at least one local terrestrial satellite (LTS), preferably located in a mast or any other supporting structure, each (LTS) having high frequency communication equipment substantially corresponding to a conventional geostationary satellite for digital transmission of video, audio or data, arranged to transmit in the L Band (1-2 GHz), the S Band (2-4 GHz) or a higher frequency band with a relatively low power output and having a preferably omnidirectional antenna installation for transmission in a substantially horizontal plane. The signals can be digitalized according to MPEG-2 or according to any known or future signal algorithm.
    • 便于在本地地理区域内促进音频,视频,数据和任何其他类型的通信的地面通信系统,并以非常低的成本同时提供极大数量的通信信道。 它包括至少一个本地地面卫星(LTS),优选地位于桅杆或任何其他支撑结构中,每个(LTS)具有基本对应于用于视频,音频或数据的数字传输的常规对地静止卫星的高频通信设备, 以较低的功率输出在L波段(1-2GHz),S波段(2-4GHz)或更高频带中发射,并且具有优选的全向天线装置,用于在基本上水平的平面中传输。 信号可以根据MPEG-2或根据任何已知或未来的信号算法数字化。
    • 2. 发明申请
    • TERRESTRIAL COMMUNICATION SYSTEM
    • 地缘通信系统
    • WO1998025411A1
    • 1998-06-11
    • PCT/SE1997002012
    • 1997-12-01
    • WELLTON PERSSON, Claes, Lorentz, UnoBJURFJELL, EdvardBJURFJELL, Tina, Britt, Marie
    • WELLTON PERSSON, Claes, Lorentz, Uno
    • H04N07/20
    • H04N7/20
    • A terrestrial communication system, facilitating audio, video, data and any other type of communication within a local geographical area, and with an extremely large number of communication channels being made available simultaneously at a very low cost. It comprises at least one local terrestrial satellite (LTS), preferably located in a mast or any other supporting structure, each (LTS) having high frequency communication equipment substantially corresponding to a conventional geostationary satellite for digital transmission of video, audio or data, arranged to transmit in the L Band (1-2 GHz), the S Band (2-4 GHz) or a higher frequency band with a relatively low power output and having a preferably omnidirectional antenna installation for transmission in a substantially horizontal plane. The signals can be digitalized according to MPEG-2 or according to any known or future signal algorithm.
    • 便于在本地地理区域内促进音频,视频,数据和任何其他类型的通信的地面通信系统,并以非常低的成本同时提供极大数量的通信信道。 它包括至少一个本地地面卫星(LTS),优选地位于桅杆或任何其他支撑结构中,每个(LTS)具有基本对应于用于视频,音频或数据的数字传输的常规对地静止卫星的高频通信设备, 以较低的功率输出在L波段(1-2GHz),S波段(2-4GHz)或更高频带中发射,并且具有优选的全向天线装置,用于在基本上水平的平面中传输。 信号可以根据MPEG-2或根据任何已知或未来的信号算法数字化。