Terminal device, thin client system, display method, and recording medium

A thin client system comprising a server device and a terminal device, wherein:

• the server device includes:
• a memory;
• and
• a processor coupled to the memory, wherein the processor executes a process including:
• storing a display image to be displayed on the terminal device connected via a network;
• rendering a software processed result in an image memory;
• detecting an update region which has been updated between frames of an image rendered in the image memory;
• measuring an available band for communications with the terminal device;
• and
• transmitting a screen image, which is an image in the update region, and the available band to the terminal device;
• and
• the terminal device includes:
• a memory;
• and
• a processor coupled to the memory, wherein the processor executes a process including:
• receiving the screen image and the available band;
• storing the screen image received at the receiving;
• displaying the screen image stored in a storage;
• first computing a switching end time, in which switching of the screen image is ended, based on an amount of one screenful of screen image data that is determined from a screen size of a display and an available band for communications with the server device;
• second computing a switching start time, in which switching of the screen image is started, based on a switching time of the screen image obtained from the screen size and a switching speed of the screen image, and the switching end time;
• and
• reading the screen image from the storage and displaying the screen image at the switching speed on the display after the switching start time has elapsed from reception of a user's switching operation.

A display method to be executed by a terminal device, the display method comprising:

• receiving a screen image from a server device connected via a network, using a processor;
• storing the received screen image in a storage;
• displaying the screen image stored in the storage on a display, using the processor;
• first computing a switching end time, in which switching of the screen image is ended, based on an amount of one screenful of screen image data that is determined from a screen size of the display and an available band for communications with the server device, using the processor;
• second computing a switching start time, in which switching of the screen image is started, based on a switching time of the screen image obtained from the screen size and a switching speed of the screen image, and the switching end time, using the processor;
• and
• reading the screen image from the storage and displaying the screen image at the switching speed on the display after the switching start time has elapsed from reception of a user's switching operation, using the processor.

A non-transitory computer-readable recording medium having stored therein a program that causes a computer to execute a display process comprising:

• receiving a screen image from a server device connected via a network;
• storing the received screen image in a storage;
• displaying the screen image stored in the storage on a display;
• first computing a switching end time, in which switching of the screen image is ended, based on an amount of one screenful of screen image data that is determined from a screen size of the display and an available band for communications with the server device;
• second computing a switching start time, in which switching of the screen image is started, based on a switching time of the screen image obtained from the screen size and a switching speed of the screen image, and the switching end time;
• and
• reading the screen image from the storage and displaying the screen image at the switching speed on the display after the switching start time has elapsed from reception of a user's switching operation.