Image processing device, image display device, and method of controlling image processing device for reducing and enlarging an image size

An image display device comprising:

• an image processing device adapted to perform image processing on image information input, and then output the image information;
• and
• a display section adapted to display an image based on the image information processed by the image processing device,
• wherein the image processing device includes
• a central processing unit adapted to perform as:
• a first image processing section adapted to perform image processing on the image information, and include a first storage section to store the image information,
• a second image processing section adapted to perform image processing on the image information from the first image processing section, and include a second storage section, separate from the first storage section, to store the image information, and
• a third image processing section adapted to perform image processing on the image information after the processing of the first image processing section, but before the processing of the second image processing section, the third image processing section including a third storage section, separate from the first and second storage sections, to store the image information, the third image processing section performing video processing of color correction or dimming using the third image processing section;
• a control section adapted to switch between
• a first mode for performing a process of reducing the image size of the image information and raising the refresh rate of the image information by the first image processing section, and a process of enlarging the image size of the image information by the second image processing section, and
• a second mode for keeping unchanged the image size and the refresh rate of the image information in the first image processing section, and keeping unchanged the image size of the image information also in the second image processing section,
• wherein the first image processing section performs a process of reducing an image size of the image information stored in the first storage section and raising a refresh rate,
• wherein the second image processing section performs a process of enlarging an image size of the image information stored in the second storage section;
• a plurality of image input terminals;
• and
• a mode storage section adapted to store mode correspondence information indicating a correspondence between at least one of the image input terminals and one of the first mode and the second mode;
• wherein the central processing unit is further adapted to perform as an image terminal selection section adapted to select one of the image input terminals, and
• wherein the control section selects one of the first mode and the second mode based on information of the image input terminal selected by the image terminal selection section, and the mode correspondence information stored in the mode storage section, and
• wherein in the mode storage section at least one of ANALOG RGB, COMPONENT VIDEO, and COMPOSITE VIDEO, and at least one of D-VIDEO and HDMI are stored as types of the image input terminals, at least one of D-VIDEO and HDMI has an operation mode set to the first mode, and at least one of ANALOG RGB, COMPONENT VIDEO and COMPOSITE VIDEO has an operation mode set to the second mode.

A method of controlling an image processing device including a first image processing section adapted to perform image processing on the image information, and include a first storage section to store the image information, a second image processing section adapted to perform image processing on the image information from the first image processing section, and include a second storage section, separate from the first storage section, to store the image information, and adapted to perform image processing on image information input and then output the image information, and a third image processing section adapted to perform image processing on the image information after the processing of the first image processing section, but before the processing of the second image processing section, the third image processing section including a third storage section, separate from the first and second storage sections, to store the image information, the method comprising:

• reducing an image size of the image information stored in the first storage section and raising a refresh rate by the first image processing section;
• enlarging an image size of the image information stored in the second storage section by the second image processing section;
• and
• performing video processing of color correction or dimming using the third image processing section;
• switching between
• (i) a first mode for performing a process of reducing the image size of the image information and raising the refresh rate of the image information by the first image processing section, and a process of enlarging the image size of the image information by the second image processing section, and
• (ii) a second mode for keeping unchanged the image size and the refresh rate of the image information in the first image processing section, and keeping unchanged the image size of the image information also in the second image processing section;
• selecting one of image input terminals,
• wherein in the switching, one of the first mode and the second mode is selected based on information of the image input terminal selected in the selecting, and mode correspondence information indicating a correspondence between at least one of the image input terminals and one of the first mode and the second mode, and
• wherein at least one of ANALOG RGB, COMPONENT VIDEO, and COMPOSITE VIDEO, and at least one of D-VIDEO and HDMI are stored as types of the image input terminals, at least one of D-VIDEO and HDMI has an operation mode set to the first mode, and at least one of ANALOG RGB, COMPONENT VIDEO and COMPOSITE VIDEO has an operation mode set to the second mode.