Abstract: A management apparatus in a time synchronization system includes a time variation information receiving unit configured to acquire time variation information and position information of a time synchronization apparatus, a position information classifying unit configured to classify time synchronization apparatuses into predetermined categories based on the acquired position information, a time variation analysis configured to determine majority based on whether patterns of time variation of the time synchronization apparatuses belonging to an identical category are identical to each other, and to analyze the time variation based on the determined results, and a filtering and delivery unit configured to output an instruction to block the time information received from the positioning satellite, to the time synchronization apparatus having abnormal time variation.

Abstract: The device has a frame body (12) that has a substantial C-shape in cross section and is mounted on the body of a user, a strip-shaped display panel (22) disposed along the peripheral surface of the frame body (12), and a driver IC (15) for driving the display panel (22), wherein the display panel (22) and the driver IC are provided to different flexible substrates (21A, 21B), and the flexible substrates (21A, 21B) are disposed along the peripheral surface of the frame body (12) without being superposed on each other.