Modem with automatic callback provisions
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United States of America Patent
Stats
-
May 16, 2000
Issued Date -
N/A
app pub date -
Nov 22, 1996
filing date -
Dec 30, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A modem is included in a television receiver for transferring data, such as 'pay per view' billing information, to a modem in a billing station during periodic callback operations. The television receiver modem monitors the telephone line for predetermined conditions, such as the presence of high frequency energy or a drop in the telephone line loop current, indicative of telephone use. The television receiver modem will ordinarily inhibit or terminate a callback in order to avoid interfering with normal telephone calls when the predetermined conditions are detected. However, the detection of the predetermined conditions may be caused by telephone network problems and not by normal telephone usage. Accordingly, the modem is controlled to ignore the detection of the conditions after a predetermined number of unsuccessful callbacks due to the detection of the conditions until a successful callback is achieved.
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Family
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Cited Art Landscape
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