Patent ID: 7423660
Filing Date: 2008-09-09
Classification: G06F

Abstract:
1. An image display apparatus comprising: an external communication port configured to be coupled to a device interface for inputting an image signal from an information processing apparatus that processes image data and outputs the image signal, the image display apparatus receiving the image signal from the information processing apparatus via the device interface and displaying an image based on the image signal; an on-screen display generating unit configured to generate a scroll bar image; a coordinate input unit configured to input position information based on a position directly pointed on a display screen without using the device interface; a determining unit configured to determine whether the position information from the coordinate input unit points to the scroll bar image; an acquiring unit configured to acquire a partial image signal of a partial image corresponding to the position information from the image signal output from the information processing apparatus, without transmitting the position information to the information processing apparatus, when the position information from the coordinate input unit is determined to point to the scroll bar image; a synthesizing unit configured to synthesize the scroll bar image with the partial image based on the partial image signal acquired by the acquiring unit; and an information transmission unit configured to transmit the position information to the information processing apparatus so that the image signal which is output from the information processing apparatus is changed based on the position information, when the position information from the coordinate input unit is determined to point to outside of the scroll bar image, wherein the acquiring unit acquires a changed partial image signal of a changed partial image from the changed image signal.