Information display apparatus, display control integrated circuit, and display control method for superimposing, for display, information onto images captured in a time sequence

An information display method for performing a visual light communication and superimposing light source information transmitted from a light source onto images captured in time sequence for display on a screen, the information display method comprising the steps of:

• capturing an image in time sequence in an imaging range;
• extracting light source information transmitted from a light source in the imaging range;
• sequentially caching, in a cache memory, the extracted light source information;
• superimposing the light source information onto the captured image and displaying the image, on which the light source information has been superimposed, on the screen;
• setting, among the light source information cached in the cache memory, a higher priority level for the light source information of a light source that is outside of a current imaging region on a current image plane but whose position is closer to the current imaging region;
• and
• deleting the light source information, cached in the cache memory, in order starting from light source information having a lowest priority level.

An integrated circuit for use in an information display apparatus for performing a visual light communication and superimposing light source information transmitted from a light source onto images captured in time sequence for display on a screen, the integrated circuit comprising:

• a cache memory;
• an information processing section;
• and
• a display control section, wherein
• the information processing section including logic that, when executed, performs the steps of
• extracting the light source information transmitted from the light source in the imaging range,
• sequentially caching, in the cache memory, the extracted light source information, and
• setting, among the light source information cached in the cache memory, a higher priority level for light source information of a light source that is outside of a current imaging region on a current image plane but whose position is closer to the current imaging region,
• the display control section superimposes the light source information onto the captured image and displays the image, on which the light source information has been superimposed, on the screen, and
• the information processing section further performs a step of deleting the light source information, cached in the cache memory, in an order starting from light source information having a lowest priority level.