| 摘要 |
<p>A method and apparatus allow the function circuitry of a set top box (100) to be readily upgraded or replaced in the field. Replacement or upgraded function circuitry is provided in a self-contained module (201). The set top box (100) is provided with a port (206) through which the module (201) can be electrically connected to the set top box (100). Insertion of the module (201) either bypasses existing function circuitry (101) or is the only function circuitry available to the set top box (100).</p> |
