Display device and control method for display device

A display device that refreshes a display screen at a refresh rate which is variable, the display device comprising:

• rate detecting circuitry that specifies the refresh rate which is variable;
• image generating circuitry that generates image data to be displayed;
• and
• state presenting circuitry that presents, to a user, information indicative of a degree of a specified refresh rate, wherein
• the rate detecting circuitry determines whether or not the specified refresh rate is higher than a threshold,
• when it is determined that the specified refresh rate is lower than the threshold, the state presenting circuitry presents an indicator indicating that the specified refresh rate is in a low state, and
• the rate detecting circuitry specifies the refresh rate in accordance with a time elapsed from a last time that the image generating circuitry output the image data.

A display device that refreshes a display screen at a refresh rate which is variable, the display device comprising:

• rate detecting circuitry that specifies the refresh rate which is variable;
• and
• state presenting circuitry that presents, to a user, information indicative of a degree of a specified refresh rate, wherein
• the rate detecting circuitry determines whether or not the specified refresh rate is higher than a threshold,
• when it is determined that the specified refresh rate is lower than the threshold, the state presenting circuitry presents an indicator indicating that the specified refresh rate is in a low state, and
• for a plurality of most recent vertical periods, the rate detecting circuitry specifies the refresh rate in accordance with a pattern of presence or absence of refresh in each of the plurality of most recent vertical periods.

A method that controls a display device that refreshes a display screen at a refresh rate which is variable, the method comprising:

• a rate detecting step of specifying the refresh rate which is variable;
• a timing signal generating step of generating a timing signal instructing the display screen to be refreshed;
• and
• a state presenting step of presenting, to a user, information indicative of a degree of a specified refresh rate, wherein
• the rate detecting step specifies the refresh rate in accordance with how many times in a predetermined period the display screen is instructed by the timing controller to be refreshed,
• the rate detecting step includes determining whether or not the specified refresh rate is higher than a threshold, and
• when it is determined that the refresh rate is lower than the threshold, the state presenting step includes presenting an indicator indicating that the specified refresh rate is in a low state.