| 摘要 |
A system for blocking access to programs includes a display device, an on-screen display (OSD) unit, a memory unit, and a filter unit. The OSD unit is operable to control the display device to display a main-rating menu having multiple main-rating options arranged in one dimension. At least one main-rating option is associated with a sub-rating menu that is displayed when the corresponding main-rating option is selected. The sub-rating menu has multiple sub-rating options arranged for display in the same dimension as the main-rating options. The memory unit stores information of which rating is intended to be blocked. The filter unit is to block or allow access to the programs based upon the stored information.
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