Abstract: Disclosed are a head-mounted display system and a manned device. The head-mounted display system comprises: a head-mounted display apparatus, a touch device and a manned terminal apparatus, wherein the touch device is arranged on the manned device and is in communication connection with the manned terminal apparatus, the manned terminal apparatus is arranged on the manned device and comprises a power supply module and a processor module, and the head-mounted display apparatus comprises at least one display screen, is in communication connection with the manned terminal apparatus, and is configured to execute a control operation corresponding to a touch operation performed on the touch device by a passenger user of the manned device. The head-mounted display system enables the passenger to watch the screen content without maintaining a certain posture for a long time, and improves the personalized experience and privacy experience of the passenger.

Abstract: Embodiments of the present disclosure disclose a presentation content update method, a head-mounted display device and a computer-readable medium. One specific embodiment of the method includes: determining three-axis attitude angles of a target device and three-axis attitude angles of a head-mounted display device based on first sensor data with respect to the target device sent by a first sensor and second sensor data with respect to the head-mounted display device sent by a second sensor; determining whether the three-axis attitude angles of the target device and the three-axis attitude angles of the head-mounted display device meet an attitude angle deviation detection condition; and updating presentation content on a display screen of the head-mounted display device in response to determining that the three-axis attitude angles of the target device and the three-axis attitude angles of the head-mounted display device meet the attitude angle deviation detection condition.