There is provided an excellent image display device allowing observation of a surrounding scene by a video see-through method. While an authentication process is being performed, a head-mounted display 100 superimposes, and displays, an authentication screen on a video see-through image captured by an outside camera 312. Accordingly, a user is enabled to observe the surrounding scene by the video see-through image during the authentication process. Even when using the head-mounted display 100 while walking outdoors, the user is enabled to constantly grasp his/her surroundings, and the safety may be secured.

The present disclosure provides apparatuses and methods related to a beverage tap handle that is capable of displaying videos proactively and retroactively based on environmental triggers. In a general embodiment, a beverage tap handle includes a handle portion that can be pulled to dispense a beverage from a spigot, an attachment portion that attaches the handle portion to the spigot, a display screen configured to display a plurality of images, and a controller that controls the display screen to change an image displayed on the display screen to a new image from the plurality of images, the controller programmed to (i) change the displayed image to the new image when the handle portion is pulled sideways to dispense the beverage; and/or (ii) change the displayed image to the new image after the displayed image has been displayed for a predetermined amount of time.

In a stereoscopic video observation device 200, an optically transmissive HMD 208 presents video observed when a three-dimensional image in a virtual three-dimensional space is projected into a real space. A transmittance changing section changes the transmittance of light that passes through the optically transmissive HMD 208. A shutter control section 220 sets a lower limit value of the light transmittance that can be changed by the transmittance changing section.

In a stereoscopic video observation device 200, an optically transmissive HMD 208 presents video observed when a three-dimensional image in a virtual three-dimensional space is projected into a real space. A transmittance changing section changes the transmittance of light that passes through the optically transmissive HMD 208. A shutter control section 220 sets a lower limit value of the light transmittance that can be changed by the transmittance changing section.

It is an object of the present invention to provide a configuration which are less likely to cause a distortion in an observed image when the position of the image display device in the eyeball direction of an observer is adjusted. An image display device according to the present invention includes: an image formation device (40); and an optical system (52) that brings an image from the image formation device (40) to an eyeball (11) of an observer. 0 (degrees).sub.2<.sub.1 is satisfied where an image-formation-device first strike point (CP.sub.1) is defined as a point where an extended line of an optical axis of the optical system (52) intersects with an image exit surface of the image formation device (40), a first normal line (NL.sub.1) is defined as a normal line to the image exit surface of the image formation device (40) passing through the first strike point (CP.sub.1), an image-formation-device second strike point (CP.sub.2) is defined as a point where an extended line of a pupil center line of the eyeball (11) of the observer intersects with the image exit surface of the image formation device (40), a second normal line (NL.sub.2) is defined as a normal line to the image exit surface of the image formation device (40) passing through the second strike point (CP.sub.2), and .sub.1 represents an angle between the extended line of the optical axis of the optical system (52) and the first normal line (NL.sub.1), and .sub.2 represents an angle between the extended line of the pupil center line of the eyeball of the observer and the second normal line (NL.sub.2).

The present invention discloses an electric apparatus and operation method thereof. The electric apparatus includes: display unit to display the output content from said electric apparatus: operation unit used to operate said electric apparatus; the apparatus further includes: the primary indication unit, when the primary indication unit is started up, the operation unit is in visible status and otherwise the operation unit is in invisible status. The design of the present invention improves the front visual effect and the interactive performance of the electrical apparatus.

The present invention discloses an electric apparatus and operation method thereof. The electric apparatus includes: display unit to display the output content from said electric apparatus: operation unit used to operate said electric apparatus; the apparatus further includes: the primary indication unit, when the primary indication unit is started up, the operation unit is in visible status and otherwise the operation unit is in invisible status. The design of the present invention improves the front visual effect and the interactive performance of the electrical apparatus.

Provided is a television apparatus including: a display panel which displays an image; a front cover which covers a front side of the television apparatus such that the display panel is exposed; a rear cover which is opposed to the front cover; a power supply which is supported between the front cover and the rear cover and includes an input connector mounted thereon to receive an input AC power for the display panel; an output connector configured to detachably coupled with the input connector to supply the input AC power, wherein the rear cover includes an inwardly-depressed portion at which a cover insertion hole is formed such that the output connector is coupled to the input connector through the cover insertion hole.

Provided is a television apparatus including: a display panel which displays an image; a front cover which covers a front side of the television apparatus such that the display panel is exposed; a rear cover which is opposed to the front cover; a power supply which is supported between the front cover and the rear cover and includes an input connector mounted thereon to receive an input AC power for the display panel; an output connector configured to detachably coupled with the input connector to supply the input AC power, wherein the rear cover includes an inwardly-depressed portion at which a cover insertion hole is formed such that the output connector is coupled to the input connector through the cover insertion hole.

Methods and apparatus are disclosed for automatic TV ON/OFF detection. An example method includes detecting a power state of an information presentation device. The method includes comparing, using a processor, a measurement indicative of an amount of power drawn by the information presentation device to a first threshold. The method also includes comparing the measurement to a second threshold. The method also includes storing an indication that the information presentation device is in an indeterminate state if the measurement is greater than the first threshold and less than the second threshold.