Channel scan apparatus and channel scan method for co-scanning different television signals in selected radio frequency channel

摘要

A channel scan apparatus (100, 300, 500, 1 200) includes a first acquisition circuit (102, 302, 502, 1202), a second acquisition circuit (104, 304, 504, 1204), and a controller (106, 306, 506, 1206). The first acquisition circuit (102, 302, 502, 1202) is arranged for checking, during a first time period, whether a selected radio frequency channel has a television signal complying with a first television standard. The second acquisition circuit (104, 304, 504, 1204) is arranged for checking, during a second time period overlapping the first time period, whether a selected radio frequency channel has a television signal complying with a second television standard different from the first television standard. The controller (106, 306, 506, 1206) is arranged for controlling the first acquisition circuit (102, 302, 502, 1 202) and the second acquisition circuit (104, 304, 504, 1 204) to scan a plurality of radio frequency channels.