发明名称 |
COMMUNICATION METHOD AND APPARATUS |
摘要 |
A facsimile interface apparatus (12) is connected between facsimile terminals (10, 24) communicating via a satellite (16). The interface apparatus converts a conventional facsimile signal (66, 68) to a signal (70, 72, 74) suitable for transmission to the satellite (16). However, the interface apparatus and the satellite may incur a long delay such that the calling facsimile terminal (10) repeats a transmitted signal while the response to that signal is being received over the satellite (16). To overcome this problem, the facsimile interface apparatus (12) connected to the calling terminal (10) sends, after a period t1, a holding signal (90) to the calling terminal (10), to prevent the calling terminal from repeating the transmitted signal (66, 68). After a further period t2, the interface apparatus (12) sends a command repeat signal (93) to the calling terminal (10), so that the transmitted signal (66, 68) is repeated if the called terminal (24) has not transmitted a response.
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申请公布号 |
WO9522224(A1) |
申请公布日期 |
1995.08.17 |
申请号 |
WO1994GB01618 |
申请日期 |
1994.07.27 |
申请人 |
INTERNATIONAL MOBILE SATELLITE ORGANIZATION;SMITH, RICHARD, DOUGLAS, LANE;BESSET, JEAN-BENOIT |
发明人 |
SMITH, RICHARD, DOUGLAS, LANE;BESSET, JEAN-BENOIT |
分类号 |
H04B7/155;H04L29/08;H04N1/00;H04N1/32;(IPC1-7):H04N1/00;H04N1/327 |
主分类号 |
H04B7/155 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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