An apparatus and method for determining an inclination angle \u03b8 between an axis of an elongate object such as a cane, a pointer or a jotting implement such as a pen, pencil, stylus or the like and a normal to a plane surface at times when a tip of the elongate object is contacting that plane surface. The operational amplifier is configured to generate an output voltage based on input voltages at input terminals thereof. The frames can be moved from a collapsed to a fully extended position. A content conversion unit generates a content information table, related to content that is to be converted, using the media dependent table, the weight table, the terminal information and the player information, and converts the content using the content information table so as to transmit converted content to the terminal. Each DMA register set defines a corresponding buffer in system memory, to which the data packet is transferred. Even though the expansion method employed simply enlarges the video periphery, enlarges the scale factor ratio linearly from the center section extending to the periphery and enlarges the scale factor ratio exponentially from the video center section extending to the periphery, a reduction in video visibility by expansion is prevented as the center section is set to 1\xd7.