Mobile information processing apparatus
A mobile information communication apparatus includes a data processing device for sending plotting command/data to a display control device that controls the pixels of a display panel belonging to the mobile information communication apparatus. An interface device is provided which receives the plotting command/data generated by the data processing device and sends, based on plotting command/data, an external display signal to the external display device. The data processing device and the interface device are configured to send, from the interface device, a higher-resolution external display signal.
1. A mobile information processing apparatus comprising:
a display means including a display panel having a screen on which an image is displayed as a result of an activation of pixels, and a display control means which controls the activation of the pixels of the screen of the display panel;
an interface means which is connected to a peripheral device, the peripheral device including an external display means or the peripheral device being connected to the external display means; and
a processing means including a central processing circuit which processes an image data file, and a graphic controller which writes and reads bit-mapped data to a single VRAM, generates a digital display signal that conveys the read bit-mapped data, and sends the digital display signal to the display control means and/or to the interface means;
wherein when the image data file processed by the central processing circuit has an intrinsic resolution higher than a resolution of the screen of the display panel, the graphics controller performs the following functions:
a function to read first bit-mapped data of an image having a same resolution as the resolution of the screen of the display panel from the VRAM, to generate a first digital display signal that conveys the read first bit-mapped data, and to send the first digital display signal to the display control means; and
a function to read second bit-mapped data of an image having a higher resolution than the resolution of the screen of the display panel, to generate a second digital display signal that conveys the read second bit-mapped data, and to send the second digital display signal to the interface means,
wherein when the graphic controller sends the first display display signal to the display control means, the display control means receives the first digital display signal and activates the pixels of the screen of the display panel according to the first digital display signal, and
wherein when the graphic controller sends the second display signal to the interface means, the interface means receives the second digital display signal and sends an external display signal to the peripheral device according to the second digital display signal.
2. A graphic controller which is installed in a mobile information processing apparatus including (i) a display means including a display panel having a screen on which an image is displayed as a result of an activation of pixels and a display control means which controls the activation of the pixels of the screen of the display panel, (ii) an interface means which is connected to a peripheral device, the peripheral device including an external display means or the peripheral device being connected to the external display means; and (iii) a processing means including a central processing circuit which processes an image data file, and the graphic controller which writes and reads bit-mapped data to a single VRAM, generates a digital display signal that conveys the read bit-mapped data, and sends the digital display signal to the display control means and/or to the interface means,
wherein when the image data file processed by the central processing circuit has an intrinsic resolution higher than a resolution of the screen of the display panel, the graphics controller performs the following functions:
a function to read first bit-mapped data of an image having a same resolution as the resolution of the screen of the display panel from the VRAM, to generate a first digital display signal that conveys the read first bit-mapped data, and to send the first digital display signal to the display control means; and
a function to read second bit-mapped data of an image having a higher resolution than the resolution of the screen of the display panel, to generate a second digital display signal that conveys the read second bit-mapped data, and to send the second digital display signal to the interface means,
wherein when the graphic controller sends the first display display signal to the display control means, the display control means receives the first digital display signal and activates the pixels of the screen of the display panel according to the first digital display signal, and
wherein when the graphic controller sends the second display signal to the interface means, the interface means receives the second digital display signal and sends an external display signal to the peripheral device according to the second digital display signal.