| 摘要 |
<p>A state machine for managing the navigation between cells of an Electronic Program Guide EPG of a multimedia device. The EPG comprises a grid of cells (C11 ... C14, C21 ... C23, C31 ... C34) arranged in rows (R1, R2, R3). The grid of cells can move horizontally and only a portion thereof is visible within a viewport window (VP). The state machine comprises an input handler module (IH) for detecting the navigation (HS1, VS1, VS2) from a first cell (C13) to a second cell (C34) of the grid and for consequently triggering (S1) a clock timer module (CT). After a predetermined time delay of, e.g., 1000 ms, the clock timer module activates a scroll-into-viewport module (SIV) which moves horizontally (SH) the grid of cells for bringing the second cell fully visible into the viewport window (VP). Owing to this time delay, the navigation between cells is much more intuitive and provides a calmer user interface. In a preferred embodiment, the time delay is shorter, and even immediate, for a horizontal navigation (HS1) than for a vertical navigation (VS1 or VS2).</p> |
