Telecommunications – Interference signal transmission
Patent
1997-12-31
2000-11-28
Miller, John W.
Telecommunications
Interference signal transmission
348 10, H04H 102, H04N 710
Patent
active
06154633&
ABSTRACT:
A method and apparatus allow the function circuitry of a set top box to be readily upgraded or replaced in the field. Replacement or upgraded function circuitry is provided in a self-contained module. The set top box is provided with a port through which the module can be electrically connected to the set top box. Insertion of the module either bypasses existing function circuitry or is the only function circuitry available to the set top box.
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Landgraf Henry S.
Pola Vijay K.
Kananen Ronald P.
Miller John W.
Motorola Inc.
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