A vibration generation device 112 is provided in a head-mounted display, and as a result of processing by a content processing unit 72, a vibration controlling unit 80 causes the vibration generation device 112 to vibrate so as to correspond to display contents. A drawing unit 86 of a display image generation unit 74 acquires a measurement value of a motion sensor 64 from a measurement value acquisition unit 82 and draws an image in a field of view corresponding to the position and the posture of the user head. During a period during which the vibration generation device 112 vibrates, a vibration correction unit 88 corrects the measurement value in response to the vibration.

There are provided an image display device, a display control method, and a cradle that are capable of adjusting display image quality with a simple configuration.

An image display device according to the present embodiment includes a tablet terminal having a display, a cradle holding the tablet terminal, and an optical sensor provided on the cradle and capable of receiving display light from the display.

An external scene image captured by an external scene imaging electronic camera attached to a head mounted display (HMD) is projected and displayed onto an image display screen arranged in front of the eyes of the user as a virtual image with a suitable viewing distance corresponding to the visual acuity of the user. At this time, for each object image presented in the virtual image of the external scene image, the virtual image is processed and formatted to add a predetermined degree of binocular disparity and image blur to the virtual image projected and displayed on the right and the left image display screen on the basis of a predetermined converted distance calculated from the real distance of each object. Thus, the user is given a sense of a realistic perspective for the virtual image of the external scene, free of the discomfort or unease.

Disclosed are a signal transmission device and a smart TV including a wireless signal module. The signal transmission device includes: a main antenna having a first signal input port, the first signal input port being connected with the wireless signal module; a transmission antenna adjacent to and spaced from the main antenna, the transmission antenna having a signal output port; and a dead-zone compensating antenna having a second signal input port. The second signal input port is connected with the signal output port through a signal transmission line, and the main antenna receives signals input by the wireless signal module and transmits the signals, the transmission antenna receives a part of the signals and transmits the part of the signals to a dead-zone compensating antenna through the signal transmission line; the dead-zone compensating antenna transmits the received signals and compensates a signal dead zone of the main antenna.

Disclosed are a signal transmission device and a smart TV including a wireless signal module. The signal transmission device includes: a main antenna having a first signal input port, the first signal input port being connected with the wireless signal module; a transmission antenna adjacent to and spaced from the main antenna, the transmission antenna having a signal output port; and a dead-zone compensating antenna having a second signal input port. The second signal input port is connected with the signal output port through a signal transmission line, and the main antenna receives signals input by the wireless signal module and transmits the signals, the transmission antenna receives a part of the signals and transmits the part of the signals to a dead-zone compensating antenna through the signal transmission line; the dead-zone compensating antenna transmits the received signals and compensates a signal dead zone of the main antenna.

The present invention provides a display device and a television device with which it is possible to reduce the thickness of the device profile while also realizing desirable acoustic characteristics. This display device includes: a first plate-shaped object; a display module including a display element and a second plate-shaped object that supports the display element, the display module being disposed so as to face the first plate-shaped object; a liquid layer formed by sealing up a liquid between the first plate-like object and the display module; and a vibrator provided to the first plate-shaped object and/or the display module. The loss coefficient of the display device at 25° C. is 1×10.sup.−2 or greater and a thickness ratio between the first plate-shaped object and the display module is from 1:10 to 10:1.

Disclosed in the present application is a display device, comprising a display body and an electromagnetic vibration apparatus; the display body comprises a housing, a display screen mounted at a front end of the housing, and an optical module mounted within the housing, the housing comprising a back plate; the electromagnetic vibration apparatus is mounted on the back plate and emits sound by means of vibrating the back plate, the optical module, and the display screen.

A virtual image display device includes: a display unit that generates an image display light; and a projection optical system that projects the image display light L toward the virtual image presentation plate. The projection optical system includes a projection mirror that projects the image display light toward the virtual image presentation plate and an optical device of transmission type provided such that a light axis intersects at an angle to a light path of the projection optical system. The display unit is provided at a focal point of a composite optical system within a meridional plane, the composite optical system being formed by the virtual image presentation plate and the projection optical system.

A display apparatus and an operation method thereof are provided. The display apparatus includes: a volatile memory; a nonvolatile memory; and a processor configured to: determine stability of a system for the display apparatus; when a power-off input for the display apparatus is received, if the system is determined to be stable, enter a power-saving mode while maintaining power supply to the volatile memory in which execution data regarding an application currently being executed is stored; and if the system is determined to be unstable, perform power-off processing after storing execution status information of at least one application being executed in the nonvolatile memory, perform booting to execute the application by using application execution status information stored in the nonvolatile memory, and store the execution data regarding the executed application in the volatile memory and then enter the power saving mode while maintaining the power supply to the volatile memory.

Provided is a heat conduction mechanism including: a first member including at least one heat source; a second member including a heat dissipation element, the second member displaceable with respect to the first member; and a heat conductive sheet that transfers heat of the heat source to the heat dissipation element, in which a protective sheet is provided to a portion of the heat conductive sheet that can be in contact with at least a part of the first member or the second member.